API changes for 2.17 - closes #123

this commit further helps tame the mysql connection pool (and really
reconnecting to the pool even when the underlying db goes down) further
from commit: #31a597c

this sets up `setValidationTimeout`, and `setConnectionTestQuery`
in order to better (more speedily(?)/fastly(?)/<other adective>ly(?))
handle connection timeouts in a timely manner. (although admittedly
this is already handeled well imo with the cache). however, it could
be better ™️.

in order to do this I did the following things:
  1. Switch to `TimeUnit.SECONDS.toMillis` instead of manually entering
     milliseconds, and having the time in seconds as a comment. just
     makes it more readable imo. if you want me to change it back I can
     I'm not like attached to this or anything.
  2. Perform more common validation timeouts with `setValidationTimeout`
     this allows us to potentially bump back up the connection timeout
     (although I see no harm leaving it where it is), although allows
     us to still "fail-fast" in a way when doing validations.
  3. Use `setConnectionTestQuery` for people who somehow someway
     may not be using a JDBC4 compliant driver.

.gitignore

@@ -1,31 +1,27 @@
-# built application files
-*.jar
+# Created by https://www.gitignore.io/
 
-# Java class files
-*.class
+### Intellij ###
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio and Webstorm
+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
 
-# Local configuration file (sdk path, etc)
-logs/
-
-# Eclipse project files
-.classpath
-.project
-
-# Intellij project files
-*.iml
-*.ipr
-*.iws
+# User-specific stuff:
 .idea/
+*.iws
+/out/
+*.iml
+.idea_modules/
 
-# Gradle
-.gradletasknamecache
-.gradle/
-build/
-bin/
-gradle/
-gradlew*
+# JIRA plugin
+atlassian-ide-plugin.xml
 
-# Maven
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties
+
+
+### Maven ###
 target/
 pom.xml.tag
 pom.xml.releaseBackup
@@ -34,4 +30,135 @@ pom.xml.next
 release.properties
 dependency-reduced-pom.xml
 buildNumber.properties
-.mvn/timing.properties
+.mvn/timing.properties
+
+
+### Eclipse ###
+
+.metadata
+bin/
+tmp/
+*.tmp
+*.bak
+*.swp
+*~.nib
+local.properties
+.settings/
+.loadpath
+.recommenders
+
+# Eclipse Core
+.project
+
+# External tool builders
+.externalToolBuilders/
+
+# Locally stored "Eclipse launch configurations"
+*.launch
+
+# PyDev specific (Python IDE for Eclipse)
+*.pydevproject
+
+# CDT-specific (C/C++ Development Tooling)
+.cproject
+
+# JDT-specific (Eclipse Java Development Tools)
+.classpath
+
+# Java annotation processor (APT)
+.factorypath
+
+# PDT-specific (PHP Development Tools)
+.buildpath
+
+# sbteclipse plugin
+.target
+
+# Tern plugin
+.tern-project
+
+# TeXlipse plugin
+.texlipse
+
+# STS (Spring Tool Suite)
+.springBeans
+
+# Code Recommenders
+.recommenders/
+
+
+### Linux ###
+*~
+
+# temporary files which can be created if a process still has a handle open of a deleted file
+.fuse_hidden*
+
+# KDE directory preferences
+.directory
+
+# Linux trash folder which might appear on any partition or disk
+.Trash-*
+
+# .nfs files are created when an open file is removed but is still being accessed
+.nfs*
+
+
+### macOS ###
+*.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+# Thumbnails
+._*
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+
+### Windows ###
+# Windows image file caches
+Thumbs.db
+ehthumbs.db
+
+# Folder config file
+Desktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Windows Installer files
+*.cab
+*.msi
+*.msm
+*.msp
+
+# Windows shortcuts
+*.lnk
+
+
+### Java ###
+*.class
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.jar
+*.war
+*.ear
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*

README.md

@@ -8,19 +8,27 @@ An advanced permissions implementation for Bukkit/Spigot, BungeeCord and Sponge.
 * **Wiki** - <https://github.com/lucko/LuckPerms/wiki>
 
 ## Description
-LuckPerms is an advanced permissions implementation aiming to be a flexible, performant and reliable alternative to other permission systems, providing all the features you could ever possibly need in a permissions plugin, along with an extensive and well documented API for developers.
+LuckPerms is an advanced permissions implementation aiming to be a fast, reliable and flexible alternative to existing permission plugins. The project's main goals are centered around high performance and a wide feature set, filling the gaps of functionality and building upon existing features found in other plugins.
 
-* [Spigot Plugin Page](https://www.spigotmc.org/resources/luckperms-an-advanced-permissions-system.28140/ "Spigot Plugin Page")
-* [Sponge Plugin Page](https://forums.spongepowered.org/t/luckperms-an-advanced-permissions-system/14274 "Sponge Plugin Page")
+LuckPerms also includes an extensive API for developers, and support for a variety of Minecraft server software & data storage options.
+
+See the charts below for a partial list of features & comparison with other providers.
+
+* [Spigot Plugin Release Page](https://www.spigotmc.org/resources/luckperms-an-advanced-permissions-system.28140/ "Spigot Plugin Page")
+* [Sponge Plugin Release Page](https://forums.spongepowered.org/t/luckperms-an-advanced-permissions-system/14274 "Sponge Plugin Page")
 
 ## LuckPerms vs Other Plugins
+### Bukkit
 ![alt text](https://static.lucko.me/luckperms-compare-copy.png "Feature comparison")
 _Features checked on 23rd Aug 2016. If you find any inaccuracies, please do let me know. I tried to be as fair as possible, and copy all major features from the respective plugin pages._
+### Sponge
+![alt text](https://static.lucko.me/luckperms-compare-sponge.png "Feature comparison")
+_Features checked on 8th Oct 2016. If you find any inaccuracies, please do let me know. I tried to be as fair as possible, and copy all major features from the respective plugin pages._
 
 ## License
-See LICENSE.md.
+LuckPerms is licensed under the permissive MIT license. See LICENSE.md for more info.
 
-## Thanks to:
+## Sponsor
 [![JProfiler](https://www.ej-technologies.com/images/product_banners/jprofiler_large.png)](http://www.ej-technologies.com/products/jprofiler/overview.html)
 
-Thanks to ej-technologies for granting LuckPerms an open source licence to their [java profiling software](http://www.ej-technologies.com/products/jprofiler/overview.html "Java Profiler").
+Thanks to ej-technologies for granting LuckPerms an open source licence to their [Java Profiling Software](http://www.ej-technologies.com/products/jprofiler/overview.html "Java Profiler").

api/pom.xml

@@ -1,11 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xmlns="http://maven.apache.org/POM/4.0.0"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>luckperms</artifactId>
         <groupId>me.lucko.luckperms</groupId>
-        <version>2.9-SNAPSHOT</version>
+        <version>2.17-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 

api/src/main/java/me/lucko/luckperms/LuckPerms.java

@@ -27,13 +27,17 @@ import me.lucko.luckperms.api.LuckPermsApi;
 import java.util.Optional;
 
 /**
- * Static access to LuckPerms
+ * Singleton for the {@link LuckPermsApi}.
+ *
+ * <p> Ideally, the ServiceManager for the platform should be used to obtain and cache an instance, however, this can be
+ * used if you need static access.
  */
 public final class LuckPerms {
     private static LuckPermsApi api = null;
 
     /**
-     * Gets an instance of {@link LuckPermsApi}
+     * Gets an instance of {@link LuckPermsApi}, throwing {@link IllegalStateException} if the API is not loaded.
+     *
      * @return an api instance
      * @throws IllegalStateException if the api is not loaded
      */
@@ -45,8 +49,11 @@ public final class LuckPerms {
     }
 
     /**
-     * Gets an instance of {@link LuckPermsApi} safely. Unlike {@link LuckPerms#getApi}, this method will not throw an
-     * {@link IllegalStateException} if the api is not loaded, rather return an empty {@link Optional}.
+     * Gets an instance of {@link LuckPermsApi} safely.
+     *
+     * <p> Unlike {@link LuckPerms#getApi}, this method will not throw an {@link IllegalStateException} if the API is
+     * not loaded, rather return an empty {@link Optional}.
+     *
      * @return an optional api instance
      */
     public static Optional<LuckPermsApi> getApiSafe() {

api/src/main/java/me/lucko/luckperms/api/Contexts.java

@@ -0,0 +1,263 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.api;
+
+import me.lucko.luckperms.api.context.ContextSet;
+
+import java.util.Map;
+
+/**
+ * Context and options for a permission lookup.
+ *
+ * <p> All values are immutable.
+ *
+ * @since 2.11
+ */
+public class Contexts {
+    public static final String SERVER_KEY = "server";
+    public static final String WORLD_KEY = "world";
+    private static final Contexts ALLOW_ALL = new Contexts(ContextSet.empty(), true, true, true, true, true, true);
+
+    /**
+     * Gets a context that will allow all nodes
+     *
+     * @return a context that will not apply any filters
+     */
+    public static Contexts allowAll() {
+        return ALLOW_ALL;
+    }
+
+    public static Contexts of(ContextSet context, boolean includeGlobal, boolean includeGlobalWorld, boolean applyGroups, boolean applyGlobalGroups, boolean applyGlobalWorldGroups, boolean op) {
+        return new Contexts(context, includeGlobal, includeGlobalWorld, applyGroups, applyGlobalGroups, applyGlobalWorldGroups, op);
+    }
+
+    @SuppressWarnings("deprecation")
+    @Deprecated
+    public static Contexts of(Map<String, String> context, boolean includeGlobal, boolean includeGlobalWorld, boolean applyGroups, boolean applyGlobalGroups, boolean applyGlobalWorldGroups) {
+        return new Contexts(context, includeGlobal, includeGlobalWorld, applyGroups, applyGlobalGroups, applyGlobalWorldGroups);
+    }
+
+    @SuppressWarnings("deprecation")
+    @Deprecated
+    public static Contexts of(Map<String, String> context, boolean includeGlobal, boolean includeGlobalWorld, boolean applyGroups, boolean applyGlobalGroups, boolean applyGlobalWorldGroups, boolean op) {
+        return new Contexts(context, includeGlobal, includeGlobalWorld, applyGroups, applyGlobalGroups, applyGlobalWorldGroups, op);
+    }
+
+    /**
+     * The contexts that apply for this lookup
+     * The keys for servers and worlds are defined as static values.
+     */
+    private final ContextSet context;
+
+    /**
+     * The mode to parse defaults on Bukkit
+     *
+     * @since 2.12
+     */
+    private final boolean op;
+
+    /**
+     * If global or non server specific nodes should be applied
+     */
+    private final boolean includeGlobal;
+
+    /**
+     * If global or non world specific nodes should be applied
+     */
+    private final boolean includeGlobalWorld;
+
+    /**
+     * If parent groups should be applied
+     */
+    private final boolean applyGroups;
+
+    /**
+     * If global or non server specific group memberships should be applied
+     */
+    private final boolean applyGlobalGroups;
+
+    /**
+     * If global or non world specific group memberships should be applied
+     */
+    private final boolean applyGlobalWorldGroups;
+
+    public Contexts(ContextSet context, boolean includeGlobal, boolean includeGlobalWorld, boolean applyGroups, boolean applyGlobalGroups, boolean applyGlobalWorldGroups, boolean op) {
+        if (context == null) {
+            throw new NullPointerException("context");
+        }
+
+        this.context = context.makeImmutable();
+        this.includeGlobal = includeGlobal;
+        this.includeGlobalWorld = includeGlobalWorld;
+        this.applyGroups = applyGroups;
+        this.applyGlobalGroups = applyGlobalGroups;
+        this.applyGlobalWorldGroups = applyGlobalWorldGroups;
+        this.op = op;
+    }
+
+    @Deprecated
+    public Contexts(Map<String, String> context, boolean includeGlobal, boolean includeGlobalWorld, boolean applyGroups, boolean applyGlobalGroups, boolean applyGlobalWorldGroups, boolean op) {
+        this(context == null ? null : ContextSet.fromMap(context), includeGlobal, includeGlobalWorld, applyGroups, applyGlobalGroups, applyGlobalWorldGroups, op);
+    }
+
+    @SuppressWarnings("deprecation")
+    @Deprecated
+    public Contexts(Map<String, String> context, boolean includeGlobal, boolean includeGlobalWorld, boolean applyGroups, boolean applyGlobalGroups, boolean applyGlobalWorldGroups) {
+        this(context, includeGlobal, includeGlobalWorld, applyGroups, applyGlobalGroups, applyGlobalWorldGroups, false);
+    }
+
+    /**
+     * Gets the contexts that apply for this lookup
+     *
+     * @return an immutable set of context key value pairs
+     * @since 2.13
+     */
+    public ContextSet getContexts() {
+        return this.context;
+    }
+
+    /**
+     * Gets the contexts that apply for this lookup
+     *
+     * @return an immutable map of context key value pairs
+     * @deprecated in favour of {@link #getContexts()}
+     */
+    @Deprecated
+    public Map<String, String> getContext() {
+        return this.context.toMap();
+    }
+
+    /**
+     * Gets if OP defaults should be included
+     *
+     * @return true if op defaults should be included
+     */
+    public boolean isOp() {
+        return this.op;
+    }
+
+    /**
+     * Gets if global or non server specific nodes should be applied
+     *
+     * @return true if global or non server specific nodes should be applied
+     */
+    public boolean isIncludeGlobal() {
+        return this.includeGlobal;
+    }
+
+    /**
+     * Gets if global or non world specific nodes should be applied
+     *
+     * @return true if global or non world specific nodes should be applied
+     */
+    public boolean isIncludeGlobalWorld() {
+        return this.includeGlobalWorld;
+    }
+
+    /**
+     * Gets if parent groups should be applied
+     *
+     * @return true if parent groups should be applied
+     */
+    public boolean isApplyGroups() {
+        return this.applyGroups;
+    }
+
+    /**
+     * Gets if global or non server specific group memberships should be applied
+     *
+     * @return true if global or non server specific group memberships should be applied
+     */
+    public boolean isApplyGlobalGroups() {
+        return this.applyGlobalGroups;
+    }
+
+    /**
+     * Gets if global or non world specific group memberships should be applied
+     *
+     * @return true if global or non world specific group memberships should be applied
+     */
+    public boolean isApplyGlobalWorldGroups() {
+        return this.applyGlobalWorldGroups;
+    }
+
+    public String toString() {
+        return "Contexts(" +
+                "context=" + this.getContexts() + ", " +
+                "op=" + this.isOp() + ", " +
+                "includeGlobal=" + this.isIncludeGlobal() + ", " +
+                "includeGlobalWorld=" + this.isIncludeGlobalWorld() + ", " +
+                "applyGroups=" + this.isApplyGroups() + ", " +
+                "applyGlobalGroups=" + this.isApplyGlobalGroups() + ", " +
+                "applyGlobalWorldGroups=" + this.isApplyGlobalWorldGroups() +
+                ")";
+    }
+
+    /*
+     * Ugly auto-generated lombok code
+     */
+
+    /**
+     * Check for equality
+     *
+     * @param o the other
+     * @return true if equal
+     * @since 2.12
+     */
+    public boolean equals(Object o) {
+        if (o == this) return true;
+        if (!(o instanceof Contexts)) return false;
+        final Contexts other = (Contexts) o;
+        final Object this$context = this.getContexts();
+        final Object other$context = other.getContexts();
+        if (this$context == null ? other$context != null : !this$context.equals(other$context)) return false;
+        if (this.isOp() != other.isOp()) return false;
+        if (this.isIncludeGlobal() != other.isIncludeGlobal()) return false;
+        if (this.isIncludeGlobalWorld() != other.isIncludeGlobalWorld()) return false;
+        if (this.isApplyGroups() != other.isApplyGroups()) return false;
+        if (this.isApplyGlobalGroups() != other.isApplyGlobalGroups()) return false;
+        if (this.isApplyGlobalWorldGroups() != other.isApplyGlobalWorldGroups()) return false;
+        return true;
+    }
+
+    /**
+     * Gets the hashcode
+     *
+     * @return the hashcode
+     * @since 2.12
+     */
+    public int hashCode() {
+        final int PRIME = 59;
+        int result = 1;
+        final Object $context = this.getContexts();
+        result = result * PRIME + ($context == null ? 43 : $context.hashCode());
+        result = result * PRIME + (this.isOp() ? 79 : 97);
+        result = result * PRIME + (this.isIncludeGlobal() ? 79 : 97);
+        result = result * PRIME + (this.isIncludeGlobalWorld() ? 79 : 97);
+        result = result * PRIME + (this.isApplyGroups() ? 79 : 97);
+        result = result * PRIME + (this.isApplyGlobalGroups() ? 79 : 97);
+        result = result * PRIME + (this.isApplyGlobalWorldGroups() ? 79 : 97);
+        return result;
+    }
+
+}

api/src/main/java/me/lucko/luckperms/api/Datastore.java

@@ -28,281 +28,158 @@ import java.util.Set;
 import java.util.UUID;
 
 /**
- * Interface for the internal Datastore instance
+ * Deprecated Storage interface. Use {@link Storage} instead.
+ *
+ * @deprecated as of version 2.14 in favour of {@link Storage}.
  */
-@SuppressWarnings("unused")
+@Deprecated
 public interface Datastore {
 
     String getName();
+
     boolean isAcceptingLogins();
 
-    /**
-     * Gets the {@link Sync} interface.
-     *
-     * All operations through this interface are called immediately and in the same thread as they are called.
-     * Datastore operations are thread blocking, and Sync operations should not be called on the main server thread.
-     * @return the sync interface
-     */
+    @Deprecated
     Sync sync();
 
-    /**
-     * Gets the {@link Async} interface.
-     * 
-     * All operations through this interface are called in a new, separate asynchronous thread.
-     * When the operation is complete, the provided callback method is called, in applicable, in the main server thread.
-     * @return the async interface
-     */
+    @Deprecated
     Async async();
 
-    /**
-     * Gets the {@link Future} interface.
-     * 
-     * All operations through this interface are called in a new, separate asynchronous thread, similar to {@link Async}.
-     * The only difference is that instead of providing a callback, a {@link java.util.concurrent.Future} is returned.
-     * See the Oracle JavaDocs for usage of the Future class.
-     * @return the future interface
-     */
+    @Deprecated
     Future future();
 
-    /**
-     * All operations through this interface are called immediately and in the same thread as they are called.
-     * Datastore operations are thread blocking, and Sync operations should not be called on the main server thread.
-     */
+    @Deprecated
     interface Sync {
-
-        /**
-         * Saves an action to the datastore
-         * @param entry the log entry to be saved
-         * @return true if the operation completed successfully.
-         * @throws NullPointerException if entry is null
-         */
         boolean logAction(LogEntry entry);
 
-        /**
-         * Loads and returns the log from the datastore
-         * @return a log instance, could be null
-         */
         Log getLog();
 
-        /**
-         * Either loads or creates a user object, and loads it into the plugins internal storage
-         * @param uuid the uuid of the user
-         * @param username the users username. (if you want to specify <code>null</code> here, just input "null" as a string.)
-         * @return true if the operation completed successfully.
-         * @throws NullPointerException if uuid or username is null
-         * @throws IllegalArgumentException if either of the parameters are invalid
-         * @deprecated functionality of this method is taken on by {@link #loadUser(UUID, String)}
-         */
         @Deprecated
         boolean loadOrCreateUser(UUID uuid, String username);
 
-        /**
-         * Loads a user from the datastore into the plugins internal storage.
-         * @param uuid the uuid of the user to load
-         * @return true if the user exists, and was loaded correctly.
-         * @throws NullPointerException if uuid is null
-         * @deprecated replaced by {@link #loadUser(UUID, String)}
-         */
         @Deprecated
         boolean loadUser(UUID uuid);
 
-        /**
-         * Loads a user's data into the plugins internal storage.
-         * @param uuid the uuid of the user to load
-         * @param username the users username. (if you want to specify <code>null</code> here, just input "null" as a string.)
-         * @return if the operation was performed successfully
-         * @throws NullPointerException if uuid or username is null
-         * @since 2.6
-         */
         boolean loadUser(UUID uuid, String username);
 
-        /**
-         * Saves a user object into the datastore. You should call this after you make any changes to a user.
-         * @param user the user to save
-         * @return true if the operation completed successfully.
-         * @throws NullPointerException if user is null
-         * @throws IllegalStateException if the user instance was not obtained from LuckPerms.
-         */
         boolean saveUser(User user);
 
-        /**
-         * Removes users from the datastore who are "default". This is called every time the plugin loads.
-         * @return true if the operation completed successfully
-         * @since 2.6
-         */
         boolean cleanupUsers();
 
-        /**
-         * Gets a set all user's UUIDs who are "unique", and aren't just a member of the "default" group.
-         * @return a set of uuids, or null if the operation failed.
-         * @since 2.6
-         */
         Set<UUID> getUniqueUsers();
 
-        /**
-         * Creates and loads a group into the plugins internal storage
-         * @param name the name of the group
-         * @return true if the operation completed successfully
-         * @throws NullPointerException if name is null
-         * @throws IllegalArgumentException if the name is invalid
-         */
         boolean createAndLoadGroup(String name);
 
-        /**
-         * Loads a group into the plugins internal storage.
-         * @param name the name of the group
-         * @return true if the operation completed successfully
-         * @throws NullPointerException if name is null
-         * @throws IllegalArgumentException if the name is invalid
-         */
         boolean loadGroup(String name);
 
-        /**
-         * Loads all groups from the datastore into the plugins internal storage
-         * @return true if the operation completed successfully.
-         */
         boolean loadAllGroups();
 
-        /**
-         * Saves a group back to the datastore. You should call this after you make any changes to a group.
-         * @param group the group to save
-         * @return true if the operation completed successfully.
-         * @throws NullPointerException if group is null
-         * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
-         */
         boolean saveGroup(Group group);
 
-        /**
-         * Permanently deletes a group from the datastore
-         * @param group the group to delete
-         * @return true if the operation completed successfully.
-         * @throws NullPointerException if group is null
-         * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
-         */
         boolean deleteGroup(Group group);
 
-        /**
-         * Creates and loads a track into the plugins internal storage
-         * @param name the name of the track
-         * @return true if the operation completed successfully
-         * @throws NullPointerException if name is null
-         * @throws IllegalArgumentException if the name is invalid
-         */
         boolean createAndLoadTrack(String name);
 
-        /**
-         * Loads a track into the plugins internal storage.
-         * @param name the name of the track
-         * @return true if the operation completed successfully
-         * @throws NullPointerException if name is null
-         * @throws IllegalArgumentException if the name is invalid
-         */
         boolean loadTrack(String name);
 
-        /**
-         * Loads all tracks from the datastore into the plugins internal storage
-         * @return true if the operation completed successfully.
-         */
         boolean loadAllTracks();
 
-        /**
-         * Saves a track back to the datastore. You should call this after you make any changes to a track.
-         * @param track the track to save
-         * @return true if the operation completed successfully.
-         * @throws NullPointerException if track is null
-         * @throws IllegalStateException if the track instance was not obtained from LuckPerms.
-         */
         boolean saveTrack(Track track);
 
-        /**
-         * Permanently deletes a track from the datastore
-         * @param track the track to delete
-         * @return true if the operation completed successfully.
-         * @throws NullPointerException if track is null
-         * @throws IllegalStateException if the track instance was not obtained from LuckPerms.
-         */
         boolean deleteTrack(Track track);
 
-        /**
-         * Saves UUID caching data to the datastore
-         * @param username the users username
-         * @param uuid the users mojang unique id
-         * @return true if the operation completed successfully.
-         * @throws NullPointerException if either parameters are null
-         * @throws IllegalArgumentException if the username is invalid
-         */
         boolean saveUUIDData(String username, UUID uuid);
 
-        /**
-         * Gets a UUID from a username
-         * @param username the corresponding username
-         * @return a uuid object, could be null
-         * @throws NullPointerException if either parameters are null
-         * @throws IllegalArgumentException if the username is invalid
-         */
         UUID getUUID(String username);
     }
 
-    /**
-     * All operations through this interface are called in a new, separate asynchronous thread.
-     * When the operation is complete, the provided callback method is called, in applicable, in the main server thread.
-     * 
-     * See {@link Sync} for method documentation. 
-     */
+    @Deprecated
     interface Async {
         void logAction(LogEntry entry, Callback<Boolean> callback);
+
         void getLog(Callback<Log> callback);
+
         @Deprecated
         void loadOrCreateUser(UUID uuid, String username, Callback<Boolean> callback);
+
         @Deprecated
         void loadUser(UUID uuid, Callback<Boolean> callback);
+
         void loadUser(UUID uuid, String username, Callback<Boolean> callback);
+
         void saveUser(User user, Callback<Boolean> callback);
+
         void cleanupUsers(Callback<Boolean> callback);
+
         void getUniqueUsers(Callback<Set<UUID>> callback);
+
         void createAndLoadGroup(String name, Callback<Boolean> callback);
+
         void loadGroup(String name, Callback<Boolean> callback);
+
         void loadAllGroups(Callback<Boolean> callback);
+
         void saveGroup(Group group, Callback<Boolean> callback);
+
         void deleteGroup(Group group, Callback<Boolean> callback);
+
         void createAndLoadTrack(String name, Callback<Boolean> callback);
+
         void loadTrack(String name, Callback<Boolean> callback);
+
         void loadAllTracks(Callback<Boolean> callback);
+
         void saveTrack(Track track, Callback<Boolean> callback);
+
         void deleteTrack(Track track, Callback<Boolean> callback);
+
         void saveUUIDData(String username, UUID uuid, Callback<Boolean> callback);
+
         void getUUID(String username, Callback<UUID> callback);
     }
 
-    /**
-     * All operations through this interface are called in a new, separate asynchronous thread, similar to {@link Async}.
-     * The only difference is that instead of providing a callback, a {@link java.util.concurrent.Future} is returned.
-     * See the Oracle JavaDocs for usage of the Future class.
-     * 
-     * See {@link Sync} for method documentation.
-     */
+    @Deprecated
     interface Future {
         java.util.concurrent.Future<Boolean> logAction(LogEntry entry);
+
         java.util.concurrent.Future<Log> getLog();
+
         @Deprecated
         java.util.concurrent.Future<Boolean> loadOrCreateUser(UUID uuid, String username);
+
         @Deprecated
         java.util.concurrent.Future<Boolean> loadUser(UUID uuid);
+
         java.util.concurrent.Future<Boolean> loadUser(UUID uuid, String username);
+
         java.util.concurrent.Future<Boolean> saveUser(User user);
+
         java.util.concurrent.Future<Boolean> cleanupUsers();
+
         java.util.concurrent.Future<Set<UUID>> getUniqueUsers();
+
         java.util.concurrent.Future<Boolean> createAndLoadGroup(String name);
+
         java.util.concurrent.Future<Boolean> loadGroup(String name);
+
         java.util.concurrent.Future<Boolean> loadAllGroups();
+
         java.util.concurrent.Future<Boolean> saveGroup(Group group);
+
         java.util.concurrent.Future<Boolean> deleteGroup(Group group);
+
         java.util.concurrent.Future<Boolean> createAndLoadTrack(String name);
+
         java.util.concurrent.Future<Boolean> loadTrack(String name);
+
         java.util.concurrent.Future<Boolean> loadAllTracks();
+
         java.util.concurrent.Future<Boolean> saveTrack(Track track);
+
         java.util.concurrent.Future<Boolean> deleteTrack(Track track);
+
         java.util.concurrent.Future<Boolean> saveUUIDData(String username, UUID uuid);
+
         java.util.concurrent.Future<UUID> getUUID(String username);
     }
 }

api/src/main/java/me/lucko/luckperms/api/Group.java

@@ -26,212 +26,237 @@ import me.lucko.luckperms.exceptions.ObjectAlreadyHasException;
 import me.lucko.luckperms.exceptions.ObjectLacksException;
 
 import java.util.List;
+import java.util.OptionalInt;
 
 /**
- * Interface for internal Group instances
+ * A group which holds permission data.
  */
-@SuppressWarnings("unused")
 public interface Group extends PermissionHolder {
 
     /**
+     * Get the name of the group
+     *
      * @return the name of the group
      */
     String getName();
 
     /**
      * Check to see if a group inherits a group
+     *
      * @param group The group to check membership of
      * @return true if the group inherits the other group
-     * @throws NullPointerException if the group is null
+     * @throws NullPointerException  if the group is null
      * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
      */
     boolean inheritsGroup(Group group);
 
     /**
      * Check to see if the group inherits a group on a specific server
-     * @param group The group to check membership of
+     *
+     * @param group  The group to check membership of
      * @param server The server to check on
      * @return true if the group inherits the group on the server
-     * @throws NullPointerException if the group or server is null
-     * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
+     * @throws NullPointerException     if the group or server is null
+     * @throws IllegalStateException    if the group instance was not obtained from LuckPerms.
      * @throws IllegalArgumentException if the server is invalid
      */
     boolean inheritsGroup(Group group, String server);
 
     /**
      * Check to see if the group inherits a group on a specific server and world
-     * @param group The group to check membership of
+     *
+     * @param group  The group to check membership of
      * @param server The server to check on
-     * @param world The world to check on
+     * @param world  The world to check on
      * @return true if the group inherits the group on the server and world
-     * @throws NullPointerException if the group, server or world is null
-     * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
+     * @throws NullPointerException     if the group, server or world is null
+     * @throws IllegalStateException    if the group instance was not obtained from LuckPerms.
      * @throws IllegalArgumentException if the server or world is invalid
      */
     boolean inheritsGroup(Group group, String server, String world);
 
     /**
      * Make this group inherit another group
+     *
      * @param group the group to be inherited
      * @throws ObjectAlreadyHasException if the group already inherits the group
-     * @throws NullPointerException if the group is null
-     * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
+     * @throws NullPointerException      if the group is null
+     * @throws IllegalStateException     if the group instance was not obtained from LuckPerms.
      */
     void setInheritGroup(Group group) throws ObjectAlreadyHasException;
 
     /**
      * Make this group inherit another group on a specific server
-     * @param group the group to be inherited
+     *
+     * @param group  the group to be inherited
      * @param server The server to inherit the group on
      * @throws ObjectAlreadyHasException if the group already inherits the group on that server
-     * @throws NullPointerException if the group or server is null
-     * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
-     * @throws IllegalArgumentException if the server is invalid
+     * @throws NullPointerException      if the group or server is null
+     * @throws IllegalStateException     if the group instance was not obtained from LuckPerms.
+     * @throws IllegalArgumentException  if the server is invalid
      */
     void setInheritGroup(Group group, String server) throws ObjectAlreadyHasException;
 
     /**
      * Make this group inherit another group on a specific server and world
-     * @param group the group to be inherited
+     *
+     * @param group  the group to be inherited
      * @param server The server to inherit the group on
-     * @param world The world to inherit the group on
+     * @param world  The world to inherit the group on
      * @throws ObjectAlreadyHasException if the group already inherits the group on that server and world
-     * @throws NullPointerException if the group, server or world is null
-     * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
-     * @throws IllegalArgumentException if the server or world is invalid
+     * @throws NullPointerException      if the group, server or world is null
+     * @throws IllegalStateException     if the group instance was not obtained from LuckPerms.
+     * @throws IllegalArgumentException  if the server or world is invalid
      */
     void setInheritGroup(Group group, String server, String world) throws ObjectAlreadyHasException;
 
     /**
      * Make this group inherit another group temporarily
-     * @param group the group to be inherited
+     *
+     * @param group    the group to be inherited
      * @param expireAt the unix time when the group should expire
      * @throws ObjectAlreadyHasException if the group already inherits the group temporarily
-     * @throws NullPointerException if the group is null
-     * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
-     * @throws IllegalArgumentException if the expiry time is in the past
+     * @throws NullPointerException      if the group is null
+     * @throws IllegalStateException     if the group instance was not obtained from LuckPerms.
+     * @throws IllegalArgumentException  if the expiry time is in the past
      */
     void setInheritGroup(Group group, long expireAt) throws ObjectAlreadyHasException;
 
     /**
      * Make this group inherit another group on a specific server temporarily
-     * @param group the group to be inherited
-     * @param server The server inherit add the group on
+     *
+     * @param group    the group to be inherited
+     * @param server   The server inherit add the group on
      * @param expireAt when the group should expire
      * @throws ObjectAlreadyHasException if the group already inherits the group on that server temporarily
-     * @throws NullPointerException if the group or server is null
-     * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
-     * @throws IllegalArgumentException if the expiry time is in the past or the server is invalid
+     * @throws NullPointerException      if the group or server is null
+     * @throws IllegalStateException     if the group instance was not obtained from LuckPerms.
+     * @throws IllegalArgumentException  if the expiry time is in the past or the server is invalid
      */
     void setInheritGroup(Group group, String server, long expireAt) throws ObjectAlreadyHasException;
 
     /**
      * Make this group inherit another group on a specific server and world temporarily
-     * @param group the group to be inherited
-     * @param server The server to inherit the group on
-     * @param world The world to inherit the group on
+     *
+     * @param group    the group to be inherited
+     * @param server   The server to inherit the group on
+     * @param world    The world to inherit the group on
      * @param expireAt when the group should expire
      * @throws ObjectAlreadyHasException if the group already inherits the group on that server and world temporarily
-     * @throws NullPointerException if the group, server or world is null
-     * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
-     * @throws IllegalArgumentException if the expiry time is in the past or the server/world is invalid
+     * @throws NullPointerException      if the group, server or world is null
+     * @throws IllegalStateException     if the group instance was not obtained from LuckPerms.
+     * @throws IllegalArgumentException  if the expiry time is in the past or the server/world is invalid
      */
     void setInheritGroup(Group group, String server, String world, long expireAt) throws ObjectAlreadyHasException;
 
     /**
      * Remove a previously set inheritance rule
+     *
      * @param group the group to uninherit
-     * @throws ObjectLacksException if the group does not already inherit the group
-     * @throws NullPointerException if the group is null
+     * @throws ObjectLacksException  if the group does not already inherit the group
+     * @throws NullPointerException  if the group is null
      * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
      */
     void unsetInheritGroup(Group group) throws ObjectLacksException;
 
     /**
      * Remove a previously set inheritance rule
-     * @param group the group to uninherit
+     *
+     * @param group     the group to uninherit
      * @param temporary if the group being removed is temporary
-     * @throws ObjectLacksException if the group does not already inherit the group
-     * @throws NullPointerException if the group is null
+     * @throws ObjectLacksException  if the group does not already inherit the group
+     * @throws NullPointerException  if the group is null
      * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
      */
     void unsetInheritGroup(Group group, boolean temporary) throws ObjectLacksException;
 
     /**
      * Remove a previously set inheritance rule on a specific server
-     * @param group the group to uninherit
+     *
+     * @param group  the group to uninherit
      * @param server The server to remove the group on
-     * @throws ObjectLacksException if the group does not already inherit the group on that server
-     * @throws NullPointerException if the group or server is null
-     * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
+     * @throws ObjectLacksException     if the group does not already inherit the group on that server
+     * @throws NullPointerException     if the group or server is null
+     * @throws IllegalStateException    if the group instance was not obtained from LuckPerms.
      * @throws IllegalArgumentException if the server is invalid
      */
     void unsetInheritGroup(Group group, String server) throws ObjectLacksException;
 
     /**
      * Remove a previously set inheritance rule on a specific server and world
-     * @param group the group to uninherit
+     *
+     * @param group  the group to uninherit
      * @param server The server to remove the group on
-     * @param world The world to remove the group on
-     * @throws ObjectLacksException if the group does not already inherit the group
-     * @throws NullPointerException if the group, server or world is null
-     * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
+     * @param world  The world to remove the group on
+     * @throws ObjectLacksException     if the group does not already inherit the group
+     * @throws NullPointerException     if the group, server or world is null
+     * @throws IllegalStateException    if the group instance was not obtained from LuckPerms.
      * @throws IllegalArgumentException if the server or world is invalid
      */
     void unsetInheritGroup(Group group, String server, String world) throws ObjectLacksException;
 
     /**
      * Remove a previously set inheritance rule on a specific server
-     * @param group the group to uninherit
-     * @param server The server to remove the group on
+     *
+     * @param group     the group to uninherit
+     * @param server    The server to remove the group on
      * @param temporary if the group being removed is temporary
-     * @throws ObjectLacksException if the group does not already inherit the group
-     * @throws NullPointerException if the group or server is null
-     * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
+     * @throws ObjectLacksException     if the group does not already inherit the group
+     * @throws NullPointerException     if the group or server is null
+     * @throws IllegalStateException    if the group instance was not obtained from LuckPerms.
      * @throws IllegalArgumentException if the expiry time is in the past or the server is invalid
      */
     void unsetInheritGroup(Group group, String server, boolean temporary) throws ObjectLacksException;
 
     /**
      * Remove a previously set inheritance rule on a specific server and world
-     * @param group the group to uninherit
-     * @param server The server to remove the group on
-     * @param world The world to remove the group on
+     *
+     * @param group     the group to uninherit
+     * @param server    The server to remove the group on
+     * @param world     The world to remove the group on
      * @param temporary if the group being removed was set temporarily
-     * @throws ObjectLacksException if the group does not already inherit the group
-     * @throws NullPointerException if the group, server or world is null
-     * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
+     * @throws ObjectLacksException     if the group does not already inherit the group
+     * @throws NullPointerException     if the group, server or world is null
+     * @throws IllegalStateException    if the group instance was not obtained from LuckPerms.
      * @throws IllegalArgumentException if the expiry time is in the past or the server/world is invalid
      */
     void unsetInheritGroup(Group group, String server, String world, boolean temporary) throws ObjectLacksException;
 
-    /**
-     * Clear all of the groups permission nodes
-     */
-    void clearNodes();
-
     /**
      * Get a {@link List} of all of the groups the group inherits, on all servers
+     *
      * @return a {@link List} of group names
      */
     List<String> getGroupNames();
 
     /**
      * Get a {@link List} of the groups the group inherits on a specific server
+     *
      * @param server the server to check
-     * @param world the world to check
      * @return a {@link List} of group names
-     * @throws NullPointerException if the server or world is null
+     * @throws NullPointerException     if the server is null
+     * @throws IllegalArgumentException if the server is invalid
+     */
+    List<String> getLocalGroups(String server);
+
+
+    /**
+     * Get a {@link List} of the groups the group inherits on a specific server and world
+     *
+     * @param server the server to check
+     * @param world  the world to check
+     * @return a {@link List} of group names
+     * @throws NullPointerException     if the server or world is null
      * @throws IllegalArgumentException if the server or world is invalid
      */
     List<String> getLocalGroups(String server, String world);
 
     /**
-     * Get a {@link List} of the groups the group inherits on a specific server
-     * @param server the server to check
-     * @return a {@link List} of group names
-     * @throws NullPointerException if the server is null
-     * @throws IllegalArgumentException if the server is invalid
+     * Gets the weight of this group, is present.
+     *
+     * @return the group weight
+     * @since 2.17
      */
-    List<String> getLocalGroups(String server);
+    OptionalInt getWeight();
+
 }

api/src/main/java/me/lucko/luckperms/api/HeldPermission.java

@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.api;
+
+import com.google.common.collect.Multimap;
+
+import java.util.Optional;
+import java.util.OptionalLong;
+
+/**
+ * A relationship between a Holder and a permission
+ *
+ * @param <T> the identifier type of the holder
+ * @since 2.17
+ */
+public interface HeldPermission<T> {
+
+    /**
+     * Gets the holder of the permission
+     *
+     * @return the holder
+     */
+    T getHolder();
+
+    /**
+     * Gets the permission being held
+     *
+     * @return the permission
+     */
+    String getPermission();
+
+    /**
+     * Gets the value of the permission
+     *
+     * @return the value
+     */
+    boolean getValue();
+
+    /**
+     * Gets the server where the permission is held
+     *
+     * @return the server
+     */
+    Optional<String> getServer();
+
+    /**
+     * Gets the world where the permission is held
+     *
+     * @return the world
+     */
+    Optional<String> getWorld();
+
+    /**
+     * Gets the time in unix time when the permission will expire
+     *
+     * @return the expiry time
+     */
+    OptionalLong getExpiry();
+
+    /**
+     * Gets the context for the permission.
+     *
+     * @return the context
+     */
+    Multimap<String, String> getContext();
+
+    /**
+     * Converts this permission into a Node
+     *
+     * @return a Node copy of this permission
+     */
+    Node asNode();
+
+}

api/src/main/java/me/lucko/luckperms/api/LPConfiguration.java

@@ -28,22 +28,24 @@ import me.lucko.luckperms.api.data.MySQLConfiguration;
 import java.util.Map;
 
 /**
- * A wrapper interface for the internal LuckPerms configuration, providing read only access.
+ * Read-only access to the LuckPerms configuration settings
  */
-@SuppressWarnings("unused")
 public interface LPConfiguration {
 
     /**
+     * Returns the name of this server
      * @return the name of this server
      */
     String getServer();
 
     /**
+     * Returns how often a sync task will run in minutes
      * @return how often a sync task will run in minutes
      */
     int getSyncTime();
 
     /**
+     * Returns the default group, in a node representation
      * @return the default group, in a node representation
      * @deprecated as of 2.6, the default group is always "default"
      */
@@ -51,6 +53,7 @@ public interface LPConfiguration {
     String getDefaultGroupNode();
 
     /**
+     * Returns the name of the default group
      * @return the name of the default group
      * @deprecated as of 2.6, the default group is always "default"
      */
@@ -58,91 +61,109 @@ public interface LPConfiguration {
     String getDefaultGroupName();
 
     /**
+     * Returns if the users on this server will have their global permissions applied
      * @return if the users on this server will have their global permissions applied
      */
     boolean getIncludeGlobalPerms();
 
     /**
+     * Returns if the users on this server will have their global world permissions applied
      * @return if the users on this server will have their global world permissions applied
      * @since 2.9
      */
     boolean getIncludeGlobalWorldPerms();
 
     /**
+     * Returns true if the platform is applying global groups
      * @return true if the platform is applying global groups
      * @since 2.9
      */
     boolean getApplyGlobalGroups();
 
     /**
+     * Returns true if the platform is applying global world groups
      * @return true if the platform is applying global world groups
      * @since 2.9
      */
     boolean getApplyGlobalWorldGroups();
 
     /**
-     * @return the online mode setting in the config
+     * Returns the online mode setting
+     * @return the online mode setting
      */
     boolean getOnlineMode();
 
     /**
+     * Returns if LuckPerms is applying wildcard permissions
      * @return if LuckPerms is applying wildcard permissions
      */
     boolean getApplyWildcards();
 
     /**
+     * Returns if LuckPerms is resolving and applying regex permissions
      * @return if LuckPerms is resolving and applying regex permissions
      */
     boolean getApplyRegex();
 
     /**
+     * Returns if LuckPerms is expanding shorthand permissions
      * @return if LuckPerms is expanding shorthand permissions
      */
     boolean getApplyShorthand();
 
     /**
+     * Returns if LuckPerms will send notifications to users when permissions are modified
      * @return if LuckPerms will send notifications to users when permissions are modified
      * @since 2.7
      */
     boolean getLogNotify();
 
     /**
+     * Returns true if permission checks are being recorded / debugged
      * @return true if permission checks are being recorded / debugged
      * @since 2.9
+     * @deprecated as this value is now always false. Functionality was replaced by the verbose command.
      */
+    @Deprecated
     boolean getDebugPermissionChecks();
 
     /**
+     * Returns true if the vanilla op system is enabled
      * @return true if the vanilla op system is enabled
      * @since 2.8
      */
     boolean getEnableOps();
 
     /**
+     * Returns true if opped players are allowed to use LuckPerms commands
      * @return true if opped players are allowed to use LuckPerms commands
      * @since 2.8
      */
     boolean getCommandsAllowOp();
 
     /**
+     * Returns true if auto op is enabled
      * @return true if auto op is enabled
      * @since 2.9
      */
     boolean getAutoOp();
 
     /**
+     * Returns the name of the server used within Vault operations
      * @return the name of the server used within Vault operations
      * @since 2.7
      */
     String getVaultServer();
 
     /**
+     * Returns true if global permissions should be considered when retrieving meta or player groups
      * @return true if global permissions should be considered when retrieving meta or player groups
      * @since 2.7
      */
     boolean getVaultIncludeGlobal();
 
     /**
+     * Returns the database values set in the configuration
      * @return the database values set in the configuration
      * @deprecated use {@link #getDatastoreConfig()}
      */
@@ -151,24 +172,28 @@ public interface LPConfiguration {
     MySQLConfiguration getDatabaseValues();
 
     /**
+     * Returns the values set for data storage in the configuration
      * @return the values set for data storage in the configuration
      */
     DatastoreConfiguration getDatastoreConfig();
 
     /**
+     * Returns the storage method string from the configuration
      * @return the storage method string from the configuration
      */
     String getStorageMethod();
 
     /**
+     * Returns true if split storage is enabled
      * @return true if split storage is enabled
      * @since 2.7
      */
     boolean getSplitStorage();
 
     /**
-     * @return a map of split storage options, where the key is the storage section, and the value is the storage method.
-     * For example: key = user, value = json
+     * Returns a map of split storage options
+     * @return a map of split storage options, where the key is the storage section, and the value is the storage
+     * method. For example: key = user, value = json
      * @since 2.7
      */
     Map<String, String> getSplitStorageOptions();

api/src/main/java/me/lucko/luckperms/api/LocalizedNode.java

@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.api;
+
+/**
+ * A node with a traceable origin
+ *
+ * @since 2.11
+ */
+public interface LocalizedNode extends Node {
+
+    /**
+     * Gets the delegate node
+     *
+     * @return the node this instance is representing
+     */
+    Node getNode();
+
+    /**
+     * Gets the location where the {@link Node} is inherited from
+     *
+     * @return where the node was inherited from. Will not return null.
+     * @see PermissionHolder#getObjectName()
+     */
+    String getLocation();
+
+}

api/src/main/java/me/lucko/luckperms/api/Log.java

@@ -28,9 +28,10 @@ import java.util.UUID;
 
 /**
  * Represents the internal LuckPerms log.
- * All content internally is immutable. You can add to the log using the {@link Datastore}, and then request an updated copy.
+ *
+ * <p> The returned instance provides a copy of the data at the time of retrieval. Any changes made to log entries will
+ * only apply to this instance of the log. You can add to the log using the {@link Storage}, and then request an updated copy.
  */
-@SuppressWarnings("unused")
 public interface Log {
 
     /**
@@ -45,8 +46,11 @@ public interface Log {
 
     /**
      * Gets the recent content separated by page
+     *
      * @param pageNo the page number
      * @return the page content
+     * @throws IllegalArgumentException if the pageNo is less than 1
+     * @throws IllegalStateException if the log doesn't contain enough entries to populate the page. See {@link #getRecentMaxPages()}}
      */
     SortedMap<Integer, LogEntry> getRecent(int pageNo);
 
@@ -64,9 +68,12 @@ public interface Log {
 
     /**
      * Gets the recent content for the uuid, separated into pages
+     *
      * @param pageNo the page number
-     * @param actor the uuid of the actor to filter by
+     * @param actor  the uuid of the actor to filter by
      * @return the page content
+     * @throws IllegalArgumentException if the pageNo is less than 1
+     * @throws IllegalStateException if the log doesn't contain enough entries to populate the page. See {@link #getRecentMaxPages(UUID)}}
      */
     SortedMap<Integer, LogEntry> getRecent(int pageNo, UUID actor);
 
@@ -85,9 +92,12 @@ public interface Log {
 
     /**
      * Gets the user history content, separated by pages
+     *
      * @param pageNo the page number
-     * @param uuid the uuid of the acted user to filter by
+     * @param uuid   the uuid of the acted user to filter by
      * @return the page content
+     * @throws IllegalArgumentException if the pageNo is less than 1
+     * @throws IllegalStateException if the log doesn't contain enough entries to populate the page. See {@link #getUserHistoryMaxPages(UUID)}}
      */
     SortedMap<Integer, LogEntry> getUserHistory(int pageNo, UUID uuid);
 
@@ -97,7 +107,7 @@ public interface Log {
      */
     int getUserHistoryMaxPages(UUID uuid);
 
-    
+
     /**
      * @param name the name to filter by
      * @return all content in this log where the group = name
@@ -106,9 +116,12 @@ public interface Log {
 
     /**
      * Gets the group history content, separated by pages
+     *
      * @param pageNo the page number
-     * @param name the name of the acted group to filter by
+     * @param name   the name of the acted group to filter by
      * @return the page content
+     * @throws IllegalArgumentException if the pageNo is less than 1
+     * @throws IllegalStateException if the log doesn't contain enough entries to populate the page. See {@link #getGroupHistoryMaxPages(String)}}
      */
     SortedMap<Integer, LogEntry> getGroupHistory(int pageNo, String name);
 
@@ -127,8 +140,9 @@ public interface Log {
 
     /**
      * Gets the track history content, separated by pages
+     *
      * @param pageNo the page number
-     * @param name the name of the acted track to filter by
+     * @param name   the name of the acted track to filter by
      * @return the page content
      */
     SortedMap<Integer, LogEntry> getTrackHistory(int pageNo, String name);
@@ -136,9 +150,12 @@ public interface Log {
     /**
      * @param name the name to filter by
      * @return the max page number allowed in the {@link #getTrackHistory(int, String)} method
+     * @throws IllegalArgumentException if the pageNo is less than 1
+     * @throws IllegalStateException if the log doesn't contain enough entries to populate the page. See {@link #getTrackHistoryMaxPages(String)}}
      */
     int getTrackHistoryMaxPages(String name);
 
+
     /**
      * @param query the query to filter by
      * @return all content in this log where the content matches query
@@ -147,9 +164,12 @@ public interface Log {
 
     /**
      * Gets the search content, separated by pages
+     *
      * @param pageNo the page number
-     * @param query the query to filter by
+     * @param query  the query to filter by
      * @return the page content
+     * @throws IllegalArgumentException if the pageNo is less than 1
+     * @throws IllegalStateException if the log doesn't contain enough entries to populate the page. See {@link #getSearchMaxPages(String)}}
      */
     SortedMap<Integer, LogEntry> getSearch(int pageNo, String query);
 

api/src/main/java/me/lucko/luckperms/api/LogEntry.java

@@ -25,16 +25,17 @@ package me.lucko.luckperms.api;
 import java.util.UUID;
 
 /**
- * Represents a single entry in a log
+ * A single entry in the log
+ *
+ * <p> Implements {@link Comparable} ordering based upon the timestamp of the entry.
  */
-@SuppressWarnings({"unused", "WeakerAccess"})
 public class LogEntry implements Comparable<LogEntry> {
+    private static final String FORMAT = "&8(&e%s&8) [&a%s&8] (&b%s&8) &7--> &f%s";
+
     public static LogEntryBuilder builder() {
         return new LogEntryBuilder();
     }
 
-    private static final String FORMAT = "&8(&e%s&8) [&a%s&8] (&b%s&8) &7--> &f%s";
-
     private long timestamp;
     private UUID actor;
     private String actorName;
@@ -100,63 +101,69 @@ public class LogEntry implements Comparable<LogEntry> {
         return timestamp;
     }
 
-    public UUID getActor() {
-        return actor;
-    }
-
-    public String getActorName() {
-        return actorName;
-    }
-
-    public char getType() {
-        return type;
-    }
-
-    public UUID getActed() {
-        return acted;
-    }
-
-    public String getActedName() {
-        return actedName;
-    }
-
-    public String getAction() {
-        return action;
-    }
-
     void setTimestamp(long timestamp) {
         this.timestamp = timestamp;
     }
 
+    public UUID getActor() {
+        return actor;
+    }
+
     void setActor(UUID actor) {
         this.actor = actor;
     }
 
+    public String getActorName() {
+        return actorName;
+    }
+
     void setActorName(String actorName) {
         this.actorName = actorName;
     }
 
+    public char getType() {
+        return type;
+    }
+
     void setType(char type) {
         this.type = type;
     }
 
+    public UUID getActed() {
+        return acted;
+    }
+
     void setActed(UUID acted) {
         this.acted = acted;
     }
 
+    public String getActedName() {
+        return actedName;
+    }
+
     void setActedName(String actedName) {
         this.actedName = actedName;
     }
 
+    public String getAction() {
+        return action;
+    }
+
     void setAction(String action) {
         this.action = action;
     }
 
     @Override
     public String toString() {
-        return "LogEntry(timestamp=" + this.getTimestamp() + ", actor=" + this.getActor() + ", actorName=" +
-                this.getActorName() + ", type=" + this.getType() + ", acted=" + this.getActed() + ", actedName=" +
-                this.getActedName() + ", action=" + this.getAction() + ")";
+        return "LogEntry(" +
+                "timestamp=" + this.getTimestamp() + ", " +
+                "actor=" + this.getActor() + ", " +
+                "actorName=" + this.getActorName() + ", " +
+                "type=" + this.getType() + ", " +
+                "acted=" + this.getActed() + ", " +
+                "actedName=" + this.getActedName() + ", " +
+                "action=" + this.getAction() +
+                ")";
     }
 
     @Override
@@ -165,41 +172,25 @@ public class LogEntry implements Comparable<LogEntry> {
         if (!(o instanceof LogEntry)) return false;
         final LogEntry other = (LogEntry) o;
         if (this.getTimestamp() != other.getTimestamp()) return false;
-        final Object this$actor = this.getActor();
-        final Object other$actor = other.getActor();
-        if (this$actor == null ? other$actor != null : !this$actor.equals(other$actor)) return false;
-        final Object this$actorName = this.getActorName();
-        final Object other$actorName = other.getActorName();
-        if (this$actorName == null ? other$actorName != null : !this$actorName.equals(other$actorName)) return false;
+        if (this.getActor() == null ? other.getActor() != null : !this.getActor().equals(other.getActor())) return false;
+        if (this.getActorName() == null ? other.getActorName() != null : !this.getActorName().equals(other.getActorName())) return false;
         if (this.getType() != other.getType()) return false;
-        final Object this$acted = this.getActed();
-        final Object other$acted = other.getActed();
-        if (this$acted == null ? other$acted != null : !this$acted.equals(other$acted)) return false;
-        final Object this$actedName = this.getActedName();
-        final Object other$actedName = other.getActedName();
-        if (this$actedName == null ? other$actedName != null : !this$actedName.equals(other$actedName)) return false;
-        final Object this$action = this.getAction();
-        final Object other$action = other.getAction();
-        return this$action == null ? other$action == null : this$action.equals(other$action);
+        if (this.getActed() == null ? other.getActed() != null : !this.getActed().equals(other.getActed())) return false;
+        if (this.getActedName() == null ? other.getActedName() != null : !this.getActedName().equals(other.getActedName())) return false;
+        return this.getAction() == null ? other.getAction() == null : this.getAction().equals(other.getAction());
     }
 
     @Override
     public int hashCode() {
         final int PRIME = 59;
         int result = 1;
-        final long $timestamp = this.getTimestamp();
-        result = result * PRIME + (int) ($timestamp >>> 32 ^ $timestamp);
-        final Object $actor = this.getActor();
-        result = result * PRIME + ($actor == null ? 43 : $actor.hashCode());
-        final Object $actorName = this.getActorName();
-        result = result * PRIME + ($actorName == null ? 43 : $actorName.hashCode());
+        result = result * PRIME + (int) (this.getTimestamp() >>> 32 ^ this.getTimestamp());
+        result = result * PRIME + (this.getActor() == null ? 43 : this.getActor().hashCode());
+        result = result * PRIME + (this.getActorName() == null ? 43 : this.getActorName().hashCode());
         result = result * PRIME + this.getType();
-        final Object $acted = this.getActed();
-        result = result * PRIME + ($acted == null ? 43 : $acted.hashCode());
-        final Object $actedName = this.getActedName();
-        result = result * PRIME + ($actedName == null ? 43 : $actedName.hashCode());
-        final Object $action = this.getAction();
-        result = result * PRIME + ($action == null ? 43 : $action.hashCode());
+        result = result * PRIME + (this.getActed() == null ? 43 : this.getActed().hashCode());
+        result = result * PRIME + (this.getActedName() == null ? 43 : this.getActedName().hashCode());
+        result = result * PRIME + (this.getAction() == null ? 43 : this.getAction().hashCode());
         return result;
     }
 
@@ -214,6 +205,7 @@ public class LogEntry implements Comparable<LogEntry> {
         protected LogEntryBuilder getThis() {
             return this;
         }
+
     }
 
     public static abstract class AbstractLogEntryBuilder<T extends LogEntry, B extends AbstractLogEntryBuilder<T, B>> {
@@ -226,6 +218,7 @@ public class LogEntry implements Comparable<LogEntry> {
         }
 
         protected abstract T createObj();
+
         protected abstract B getThis();
 
         public long getTimestamp() {
@@ -310,9 +303,15 @@ public class LogEntry implements Comparable<LogEntry> {
 
         @Override
         public String toString() {
-            return "LogEntry.LogEntryBuilder(timestamp=" + getTimestamp() + ", actor=" + getActor() + ", actorName=" +
-                    getActorName() + ", type=" + getType() + ", acted=" + getActed() + ", actedName=" + getActedName() +
-                    ", action=" + getAction() + ")";
+            return "LogEntry.LogEntryBuilder(" +
+                    "timestamp=" + this.getTimestamp() + ", " +
+                    "actor=" + this.getActor() + ", " +
+                    "actorName=" + this.getActorName() + ", " +
+                    "type=" + this.getType() + ", " +
+                    "acted=" + this.getActed() + ", " +
+                    "actedName=" + this.getActedName() + ", " +
+                    "action=" + this.getAction() +
+                    ")";
         }
     }
 

api/src/main/java/me/lucko/luckperms/api/Logger.java

@@ -23,15 +23,17 @@
 package me.lucko.luckperms.api;
 
 /**
- * A wrapper interface for platform logger instances.
+ * A wrapper interface for platform logger instances
  *
- * <p> Bukkit/Bungee both use java.util.logging, and Sponge uses org.slf4j. This class wraps those classes so the commons
- * module can access a logger.
+ * <p> Bukkit/Bungee both use java.util.logging, and Sponge uses org.slf4j. This class wraps those classes so the
+ * commons module can access a logger.
  */
 public interface Logger {
 
     void info(String s);
+
     void warn(String s);
+
     void severe(String s);
 
 }

api/src/main/java/me/lucko/luckperms/api/LuckPermsApi.java

@@ -22,6 +22,9 @@
 
 package me.lucko.luckperms.api;
 
+import me.lucko.luckperms.api.context.ContextListener;
+import me.lucko.luckperms.api.context.ContextSet;
+import me.lucko.luckperms.api.context.IContextCalculator;
 import me.lucko.luckperms.api.event.LPListener;
 
 import java.util.Optional;
@@ -29,9 +32,8 @@ import java.util.Set;
 import java.util.UUID;
 
 /**
- * The root API interface in LuckPerms
+ * The root API interface for LuckPerms
  */
-@SuppressWarnings("unused")
 public interface LuckPermsApi {
 
     /**
@@ -58,6 +60,7 @@ public interface LuckPermsApi {
 
     /**
      * Registers a listener to be sent LuckPerms events
+     *
      * @param listener the listener instance
      * @throws NullPointerException if the listener is null
      */
@@ -65,6 +68,7 @@ public interface LuckPermsApi {
 
     /**
      * Unregisters a previously registered listener from the EventBus
+     *
      * @param listener the listener instance to unregister
      * @throws NullPointerException if the listener is null
      */
@@ -72,30 +76,53 @@ public interface LuckPermsApi {
 
     /**
      * Gets a wrapped {@link LPConfiguration} instance, with read only access
+     *
      * @return a configuration instance
      */
     LPConfiguration getConfiguration();
 
     /**
-     * Gets a wrapped {@link Datastore} instance, with somewhat limited access
-     * @return a datastore instance
+     * Gets a wrapped {@link Storage} instance.
+     *
+     * @return a storage instance
+     * @since 2.14
      */
+    Storage getStorage();
+
+    /**
+     * Gets a wrapped Datastore instance.
+     *
+     * @return a datastore instance
+     * @deprecated in favour of {@link #getStorage()}
+     */
+    @SuppressWarnings("deprecation")
+    @Deprecated
     Datastore getDatastore();
 
+    /**
+     * Gets the messaging service in use on the platform, if present.
+     *
+     * @return an optional that may contain a messaging service instance.
+     */
+    Optional<MessagingService> getMessagingService();
+
     /**
      * Gets the {@link Logger} wrapping used by the platform
+     *
      * @return the logger instance
      */
     Logger getLogger();
 
     /**
      * Gets a wrapped {@link UuidCache} instance, providing read access to the LuckPerms internal uuid caching system
-     * @return a uuidcache instance
+     *
+     * @return a uuid cache instance
      */
     UuidCache getUuidCache();
 
     /**
      * Gets a wrapped user object from the user storage
+     *
      * @param uuid the uuid of the user to get
      * @return a {@link User} object, if one matching the uuid is loaded, or null if not
      * @throws NullPointerException if the uuid is null
@@ -104,6 +131,7 @@ public interface LuckPermsApi {
 
     /**
      * Gets a wrapped user object from the user storage. This method does not return null, unlike {@link #getUser(UUID)}
+     *
      * @param uuid the uuid of the user to get
      * @return an optional {@link User} object
      * @throws NullPointerException if the uuid is null
@@ -112,6 +140,7 @@ public interface LuckPermsApi {
 
     /**
      * Gets a wrapped user object from the user storage
+     *
      * @param name the username of the user to get
      * @return a {@link User} object, if one matching the uuid is loaded, or null if not
      * @throws NullPointerException if the name is null
@@ -119,7 +148,9 @@ public interface LuckPermsApi {
     User getUser(String name);
 
     /**
-     * Gets a wrapped user object from the user storage. This method does not return null, unlike {@link #getUser(String)}
+     * Gets a wrapped user object from the user storage. This method does not return null, unlike {@link
+     * #getUser(String)}
+     *
      * @param name the username of the user to get
      * @return an optional {@link User} object
      * @throws NullPointerException if the name is null
@@ -128,12 +159,14 @@ public interface LuckPermsApi {
 
     /**
      * Gets a set of all loaded users.
+     *
      * @return a {@link Set} of {@link User} objects
      */
     Set<User> getUsers();
 
     /**
      * Check if a user is loaded in memory
+     *
      * @param uuid the uuid to check for
      * @return true if the user is loaded
      * @throws NullPointerException if the uuid is null
@@ -142,6 +175,7 @@ public interface LuckPermsApi {
 
     /**
      * Unload a user from the internal storage, if they're not currently online.
+     *
      * @param user the user to unload
      * @throws NullPointerException if the user is null
      * @since 2.6
@@ -150,6 +184,7 @@ public interface LuckPermsApi {
 
     /**
      * Gets a wrapped group object from the group storage
+     *
      * @param name the name of the group to get
      * @return a {@link Group} object, if one matching the name exists, or null if not
      * @throws NullPointerException if the name is null
@@ -158,6 +193,7 @@ public interface LuckPermsApi {
 
     /**
      * Gets a wrapped group object from the group storage. This method does not return null, unlike {@link #getGroup}
+     *
      * @param name the name of the group to get
      * @return an optional {@link Group} object
      * @throws NullPointerException if the name is null
@@ -166,12 +202,14 @@ public interface LuckPermsApi {
 
     /**
      * Gets a set of all loaded groups.
+     *
      * @return a {@link Set} of {@link Group} objects
      */
     Set<Group> getGroups();
 
     /**
      * Check if a group is loaded in memory
+     *
      * @param name the name to check for
      * @return true if the group is loaded
      * @throws NullPointerException if the name is null
@@ -180,6 +218,7 @@ public interface LuckPermsApi {
 
     /**
      * Gets a wrapped track object from the track storage
+     *
      * @param name the name of the track to get
      * @return a {@link Track} object, if one matching the name exists, or null if not
      * @throws NullPointerException if the name is null
@@ -188,6 +227,7 @@ public interface LuckPermsApi {
 
     /**
      * Gets a wrapped track object from the track storage. This method does not return null, unlike {@link #getTrack}
+     *
      * @param name the name of the track to get
      * @return an optional {@link Track} object
      * @throws NullPointerException if the name is null
@@ -196,26 +236,71 @@ public interface LuckPermsApi {
 
     /**
      * Gets a set of all loaded tracks.
+     *
      * @return a {@link Set} of {@link Track} objects
      */
     Set<Track> getTracks();
 
     /**
      * Check if a track is loaded in memory
+     *
      * @param name the name to check for
      * @return true if the track is loaded
      * @throws NullPointerException if the name is null
      */
     boolean isTrackLoaded(String name);
 
+    /**
+     * Gets the node factory instance for the platform
+     *
+     * @return the node factory
+     */
+    NodeFactory getNodeFactory();
+
     /**
      * Returns a permission builder instance
+     *
      * @param permission the main permission node to build
      * @return a {@link Node.Builder} instance
      * @throws IllegalArgumentException if the permission is invalid
-     * @throws NullPointerException if the permission is null
+     * @throws NullPointerException     if the permission is null
      * @since 2.6
      */
     Node.Builder buildNode(String permission) throws IllegalArgumentException;
 
+    /**
+     * Register a custom context calculator to the server
+     *
+     * @param contextCalculator the context calculator to register. The type MUST be the player class of the platform.
+     * @throws ClassCastException if the type is not the player class of the platform.
+     */
+    void registerContextCalculator(IContextCalculator<?> contextCalculator);
+
+    /**
+     * Registers a custom context listener to the server,
+     *
+     * @param contextListener the context listener to register. The type MUST be the player class of the platform.
+     * @throws ClassCastException if the type is not the player class of the platform.
+     */
+    void registerContextListener(ContextListener<?> contextListener);
+
+    /**
+     * Gets a calculated context instance for the user using the rules of the platform.
+     *
+     * <p> These values are calculated using the options in the configuration, and the provided calculators.
+     *
+     * @param user the user to get contexts for
+     * @return an optional containing contexts. Will return empty if the user is not online.
+     */
+    Optional<Contexts> getContextForUser(User user);
+
+    /**
+     * Gets set of contexts applicable to a player using the platforms {@link IContextCalculator}s.
+     *
+     * @param player the player to calculate for. Must be the player instance for the platform.
+     * @return a set of contexts.
+     * @since 2.17
+     */
+    ContextSet getContextForPlayer(Object player);
+
 }

api/src/main/java/me/lucko/luckperms/api/MessagingService.java

@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.api;
+
+/**
+ * A means to push changes to other servers using the platforms networking
+ *
+ * @since 2.14
+ */
+public interface MessagingService {
+
+    /**
+     * Uses the messaging service to inform other servers about changes.
+     *
+     * <p> This will push the update asynchronously, and this method will return immediately. Calling this method is
+     * equivalent to running "/lp networksync", except will not sync this server.
+     */
+    void pushUpdate();
+
+}

api/src/main/java/me/lucko/luckperms/api/MetaUtils.java

@@ -32,14 +32,14 @@ import java.util.Set;
 
 /**
  * A collection of utilities to help retrieve meta values for {@link PermissionHolder}s
+ *
  * @since 2.7
  */
 public class MetaUtils {
 
-    private MetaUtils(){}
-
     /**
      * Escapes special characters used within LuckPerms, so the string can be saved without issues
+     *
      * @param s the string to escape
      * @return an escaped string
      * @throws NullPointerException if the string is null
@@ -48,7 +48,7 @@ public class MetaUtils {
         if (s == null) {
             throw new NullPointerException();
         }
-        
+
         s = s.replace(".", "{SEP}");
         s = s.replace("/", "{FSEP}");
         s = s.replace("$", "{DSEP}");
@@ -58,6 +58,7 @@ public class MetaUtils {
 
     /**
      * Unescapes special characters used within LuckPerms, the inverse of {@link #escapeCharacters(String)}
+     *
      * @param s the string to unescape
      * @return an unescaped string
      * @throws NullPointerException if the string is null
@@ -66,7 +67,7 @@ public class MetaUtils {
         if (s == null) {
             throw new NullPointerException();
         }
-        
+
         s = s.replace("{SEP}", ".");
         s = s.replace("{FSEP}", "/");
         s = s.replace("{DSEP}", "$");
@@ -76,19 +77,20 @@ public class MetaUtils {
 
     /**
      * Sets a meta value on a holder
+     *
      * @param holder the holder to apply the meta node to
      * @param server the server to apply the meta on, can be null
-     * @param world the world to apply the meta on, can be null
-     * @param node the meta node
-     * @param value the meta value
-     * @throws NullPointerException if the holder, node or value is null
+     * @param world  the world to apply the meta on, can be null
+     * @param node   the meta node
+     * @param value  the meta value
+     * @throws NullPointerException     if the holder, node or value is null
      * @throws IllegalArgumentException if the node or value is empty
      */
     public static void setMeta(PermissionHolder holder, String server, String world, String node, String value) {
         if (holder == null) {
             throw new NullPointerException("holder");
         }
-        
+
         if (node == null) {
             throw new NullPointerException("node");
         }
@@ -108,7 +110,7 @@ public class MetaUtils {
         if (server == null || server.equals("")) {
             server = "global";
         }
-        
+
         node = escapeCharacters(node);
         value = escapeCharacters(value);
 
@@ -118,11 +120,12 @@ public class MetaUtils {
                 toRemove.add(n);
             }
         }
-        
+
         for (Node n : toRemove) {
             try {
                 holder.unsetPermission(n);
-            } catch (ObjectLacksException ignored) {}
+            } catch (ObjectLacksException ignored) {
+            }
         }
 
         Node.Builder metaNode = LuckPerms.getApi().buildNode("meta." + node + "." + value).setValue(true);
@@ -135,19 +138,21 @@ public class MetaUtils {
 
         try {
             holder.setPermission(metaNode.build());
-        } catch (ObjectAlreadyHasException ignored) {}
+        } catch (ObjectAlreadyHasException ignored) {
+        }
     }
 
     /**
      * Gets a meta value for the holder
-     * @param holder the holder to get the meta from
-     * @param server the server to retrieve the meta on, can be null
-     * @param world the world to retrieve the meta on, can be null
-     * @param node the node to get
-     * @param defaultValue the default value to return if the node is not set
+     *
+     * @param holder        the holder to get the meta from
+     * @param server        the server to retrieve the meta on, can be null
+     * @param world         the world to retrieve the meta on, can be null
+     * @param node          the node to get
+     * @param defaultValue  the default value to return if the node is not set
      * @param includeGlobal if global nodes should be considered when retrieving the meta
      * @return a meta string, or the default value if the user does not have the meta node
-     * @throws NullPointerException if the holder or node is null
+     * @throws NullPointerException     if the holder or node is null
      * @throws IllegalArgumentException if the node is empty
      */
     public static String getMeta(PermissionHolder holder, String server, String world, String node, String defaultValue, boolean includeGlobal) {
@@ -217,17 +222,19 @@ public class MetaUtils {
 
         try {
             holder.setPermission(node.build());
-        } catch (ObjectAlreadyHasException ignored) {}
+        } catch (ObjectAlreadyHasException ignored) {
+        }
     }
 
     /**
      * Adds a prefix to a holder on a specific server and world
-     * @param holder the holder to set the prefix for
-     * @param prefix the prefix value
+     *
+     * @param holder   the holder to set the prefix for
+     * @param prefix   the prefix value
      * @param priority the priority to set the prefix at
-     * @param server the server to set the prefix on, can be null
-     * @param world the world to set the prefix on, can be null
-     * @throws NullPointerException if the holder is null
+     * @param server   the server to set the prefix on, can be null
+     * @param world    the world to set the prefix on, can be null
+     * @throws NullPointerException     if the holder is null
      * @throws IllegalArgumentException if the prefix is null or empty
      */
     public static void setPrefix(PermissionHolder holder, String prefix, int priority, String server, String world) {
@@ -236,12 +243,13 @@ public class MetaUtils {
 
     /**
      * Adds a suffix to a holder on a specific server and world
-     * @param holder the holder to set the suffix for
-     * @param suffix the suffix value
+     *
+     * @param holder   the holder to set the suffix for
+     * @param suffix   the suffix value
      * @param priority the priority to set the suffix at
-     * @param server the server to set the suffix on, can be null
-     * @param world the world to set the suffix on, can be null
-     * @throws NullPointerException if the holder is null
+     * @param server   the server to set the suffix on, can be null
+     * @param world    the world to set the suffix on, can be null
+     * @throws NullPointerException     if the holder is null
      * @throws IllegalArgumentException if the suffix is null or empty
      */
     public static void setSuffix(PermissionHolder holder, String suffix, int priority, String server, String world) {
@@ -258,7 +266,7 @@ public class MetaUtils {
 
         int priority = Integer.MIN_VALUE;
         String meta = null;
-        for (Node n : holder.getAllNodes()) {
+        for (Node n : holder.getAllNodes(Contexts.allowAll())) {
             if (!n.getValue()) {
                 continue;
             }
@@ -272,7 +280,7 @@ public class MetaUtils {
             if (!n.shouldApplyOnWorld(world, includeGlobal, false)) {
                 continue;
             }
-            
+
             if (prefix ? !n.isPrefix() : !n.isSuffix()) {
                 continue;
             }
@@ -289,9 +297,10 @@ public class MetaUtils {
 
     /**
      * Returns a holders highest priority prefix, if they have one
-     * @param holder the holder
-     * @param server the server to retrieve the prefix on
-     * @param world the world to retrieve the prefix on
+     *
+     * @param holder        the holder
+     * @param server        the server to retrieve the prefix on
+     * @param world         the world to retrieve the prefix on
      * @param includeGlobal if global nodes should be considered when retrieving the prefix
      * @return a prefix string, if the holder has one, or an empty string if not.
      * @throws NullPointerException if the holder is null
@@ -302,9 +311,10 @@ public class MetaUtils {
 
     /**
      * Returns a holders highest priority suffix, if they have one
-     * @param holder the holder
-     * @param server the server to retrieve the suffix on
-     * @param world the world to retrieve the suffix on
+     *
+     * @param holder        the holder
+     * @param server        the server to retrieve the suffix on
+     * @param world         the world to retrieve the suffix on
      * @param includeGlobal if global nodes should be considered when retrieving the suffix
      * @return a suffix string, if the holder has one, or an empty string if not.
      * @throws NullPointerException if the holder is null
@@ -312,5 +322,8 @@ public class MetaUtils {
     public static String getSuffix(PermissionHolder holder, String server, String world, boolean includeGlobal) {
         return getChatMeta(false, holder, server, world, includeGlobal);
     }
-    
+
+    private MetaUtils() {
+    }
+
 }

api/src/main/java/me/lucko/luckperms/api/Node.java

@@ -22,17 +22,21 @@
 
 package me.lucko.luckperms.api;
 
+import me.lucko.luckperms.api.context.ContextSet;
+
 import java.util.Date;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import java.util.Set;
 
 /**
- * Represents an immutable node object
+ * An immutable permission node
+ *
  * <p> Use {@link LuckPermsApi#buildNode(String)} to get an instance.
+ *
  * @since 2.6
  */
-@SuppressWarnings("unused")
 public interface Node extends Map.Entry<String, Boolean> {
 
     /**
@@ -42,6 +46,7 @@ public interface Node extends Map.Entry<String, Boolean> {
 
     /**
      * Get what value the permission is set to. A negated node would return <code>false</code>.
+     *
      * @return the permission's value
      */
     @Override
@@ -60,18 +65,21 @@ public interface Node extends Map.Entry<String, Boolean> {
     /**
      * If this node is set to override explicitly.
      * This value does not persist across saves, and is therefore only useful for transient nodes
+     *
      * @return true if this node is set to override explicitly
      */
     boolean isOverride();
 
     /**
      * Gets the server this node applies on, if the node is server specific
+     *
      * @return an {@link Optional} containing the server, if one is defined
      */
     Optional<String> getServer();
 
     /**
      * Gets the world this node applies on, if the node is world specific
+     *
      * @return an {@link Optional} containing the world, if one is defined
      */
     Optional<String> getWorld();
@@ -88,32 +96,72 @@ public interface Node extends Map.Entry<String, Boolean> {
 
     /**
      * If this node should apply on a specific server
-     * @param server the name of the server
+     *
+     * @param server        the name of the server
      * @param includeGlobal if global permissions should apply
-     * @param applyRegex if regex should be applied
+     * @param applyRegex    if regex should be applied
      * @return true if the node should apply
      */
     boolean shouldApplyOnServer(String server, boolean includeGlobal, boolean applyRegex);
 
     /**
      * If this node should apply on a specific world
-     * @param world the name of the world
+     *
+     * @param world         the name of the world
      * @param includeGlobal if global permissions should apply
-     * @param applyRegex if regex should be applied
+     * @param applyRegex    if regex should be applied
      * @return true if the node should apply
      */
     boolean shouldApplyOnWorld(String world, boolean includeGlobal, boolean applyRegex);
 
     /**
-     * If this node should apply given the specific context
+     * If this node should apply in the given context
+     *
+     * @param context        the context key value pairs
+     * @param worldAndServer if world and server contexts should be checked
+     * @return true if the node should apply
+     * @since 2.13
+     */
+    boolean shouldApplyWithContext(ContextSet context, boolean worldAndServer);
+
+    /**
+     * If this node should apply in the given context
+     *
      * @param context the context key value pairs
      * @return true if the node should apply
+     * @since 2.13
      */
-    boolean shouldApplyWithContext(Map<String, String> context);
+    boolean shouldApplyWithContext(ContextSet context);
+
+    /**
+     * If this node should apply in the given context
+     *
+     * @param context        the context key value pairs
+     * @param worldAndServer if world and server contexts should be checked
+     * @return true if the node should apply
+     * @deprecated in favour of {@link #shouldApplyWithContext(ContextSet, boolean)}
+     */
+    @Deprecated
+    default boolean shouldApplyWithContext(Map<String, String> context, boolean worldAndServer) {
+        return shouldApplyWithContext(ContextSet.fromMap(context), worldAndServer);
+    }
+
+    /**
+     * If this node should apply in the given context
+     *
+     * @param context the context key value pairs
+     * @return true if the node should apply
+     * @deprecated in favour of {@link #shouldApplyWithContext(ContextSet)}
+     */
+    @Deprecated
+    default boolean shouldApplyWithContext(Map<String, String> context) {
+        return shouldApplyWithContext(ContextSet.fromMap(context));
+    }
 
     /**
      * Similar to {@link #shouldApplyOnServer(String, boolean, boolean)}, except this method accepts a List
-     * @param servers the list of servers
+     *
+     * @param servers       the list of servers
      * @param includeGlobal if global permissions should apply
      * @return true if the node should apply
      */
@@ -121,7 +169,8 @@ public interface Node extends Map.Entry<String, Boolean> {
 
     /**
      * Similar to {@link #shouldApplyOnWorld(String, boolean, boolean)}, except this method accepts a List
-     * @param worlds the list of world
+     *
+     * @param worlds        the list of world
      * @param includeGlobal if global permissions should apply
      * @return true if the node should apply
      */
@@ -129,6 +178,7 @@ public interface Node extends Map.Entry<String, Boolean> {
 
     /**
      * Resolves a list of wildcards that match this node
+     *
      * @param possibleNodes a list of possible permission nodes
      * @return a list of permissions that match this wildcard
      */
@@ -136,6 +186,7 @@ public interface Node extends Map.Entry<String, Boolean> {
 
     /**
      * Resolves any shorthand parts of this node and returns the full list
+     *
      * @return a list of full nodes
      */
     List<String> resolveShorthand();
@@ -178,11 +229,22 @@ public interface Node extends Map.Entry<String, Boolean> {
 
     /**
      * @return the extra contexts required for this node to apply
+     * @deprecated in favour of {@link #getContexts()}
      */
-    Map<String, String> getExtraContexts();
+    @Deprecated
+    default Map<String, String> getExtraContexts() {
+        return getContexts().toMap();
+    }
+
+    /**
+     * @return the extra contexts required for this node to apply
+     * @since 2.13
+     */
+    ContextSet getContexts();
 
     /**
      * Converts this node into a serialized form
+     *
      * @return a serialized node string
      */
     String toSerializedNode();
@@ -205,6 +267,7 @@ public interface Node extends Map.Entry<String, Boolean> {
 
     /**
      * Gets the level of this wildcard, higher is more specific
+     *
      * @return the wildcard level
      * @throws IllegalStateException if this is not a wildcard
      */
@@ -217,6 +280,7 @@ public interface Node extends Map.Entry<String, Boolean> {
 
     /**
      * Gets the meta value from this node
+     *
      * @return the meta value
      * @throws IllegalStateException if this node is not a meta node
      */
@@ -229,6 +293,7 @@ public interface Node extends Map.Entry<String, Boolean> {
 
     /**
      * Gets the prefix value from this node
+     *
      * @return the prefix value
      * @throws IllegalStateException if this node is a not a prefix node
      */
@@ -241,6 +306,7 @@ public interface Node extends Map.Entry<String, Boolean> {
 
     /**
      * Gets the suffix value from this node
+     *
      * @return the suffix value
      * @throws IllegalStateException if this node is a not a suffix node
      */
@@ -248,6 +314,7 @@ public interface Node extends Map.Entry<String, Boolean> {
 
     /**
      * Checks if this Node is equal to another node
+     *
      * @param obj the other node
      * @return true if this node is equal to the other provided
      * @see #equalsIgnoringValue(Node) for a less strict implementation of this method
@@ -256,6 +323,7 @@ public interface Node extends Map.Entry<String, Boolean> {
 
     /**
      * Similar to {@link Node#equals(Object)}, except doesn't take note of the value
+     *
      * @param other the other node
      * @return true if the two nodes are almost equal
      */
@@ -263,6 +331,7 @@ public interface Node extends Map.Entry<String, Boolean> {
 
     /**
      * Similar to {@link Node#equals(Object)}, except doesn't take note of the expiry time or value
+     *
      * @param other the other node
      * @return true if the two nodes are almost equal
      */
@@ -270,6 +339,7 @@ public interface Node extends Map.Entry<String, Boolean> {
 
     /**
      * Similar to {@link Node#equals(Object)}, except doesn't take note of the value or if the node is temporary
+     *
      * @param other the other node
      * @return true if the two nodes are almost equal
      * @since 2.8
@@ -281,6 +351,7 @@ public interface Node extends Map.Entry<String, Boolean> {
      */
     interface Builder {
         Builder setNegated(boolean negated);
+
         Builder setValue(boolean value);
 
         /**
@@ -290,11 +361,21 @@ public interface Node extends Map.Entry<String, Boolean> {
         Builder setOverride(boolean override);
 
         Builder setExpiry(long expireAt);
+
         Builder setWorld(String world);
+
         Builder setServer(String server) throws IllegalArgumentException;
+
         Builder withExtraContext(String key, String value);
+
         Builder withExtraContext(Map<String, String> map);
+
+        Builder withExtraContext(Set<Map.Entry<String, String>> context);
+
         Builder withExtraContext(Map.Entry<String, String> entry);
+
+        Builder withExtraContext(ContextSet set);
+
         Node build();
     }
 

api/src/main/java/me/lucko/luckperms/api/NodeFactory.java

@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.api;
+
+/**
+ * Builds {@link Node} instances
+ *
+ * @since 2.17
+ */
+public interface NodeFactory {
+
+    /**
+     * Creates a node from a serialised node string
+     *
+     * @param serialisedPermission the serialised permission string
+     * @param value the value of the node
+     * @return a node instance
+     * @throws NullPointerException if the permission is null
+     */
+    Node fromSerialisedNode(String serialisedPermission, boolean value);
+
+
+    /**
+     * Creates a new node builder from a given base permission string
+     *
+     * @param permission the permission
+     * @return a node builder instance
+     * @throws NullPointerException if the permission is null
+     */
+    Node.Builder newBuilder(String permission);
+
+    /**
+     * Creates a node builder instance from an existing node
+     *
+     * @param other the other node
+     * @return a node builder instance
+     * @throws NullPointerException if the other node is null
+     */
+    Node.Builder newBuilderFromExisting(Node other);
+
+    /**
+     * Creates a node builder from a serialised node string
+     * @param serialisedPermission the serialised permission string
+     * @param value the value of the node
+     * @return a node builder instance
+     * @throws NullPointerException if the permission is null
+     */
+    Node.Builder newBuilderFromSerialisedNode(String serialisedPermission, boolean value);
+
+
+    /**
+     * Creates a node builder from a key value pair
+     *
+     * @param key the key
+     * @param value the value
+     * @return a node builder instance
+     * @throws NullPointerException if the key or value is null
+     */
+    Node.Builder makeMetaNode(String key, String value);
+
+    /**
+     * Creates a node builder from a prefix string and priority
+     *
+     * @param priority the priority
+     * @param prefix the prefix string
+     * @return a node builder instance
+     * @throws NullPointerException if the prefix is null
+     */
+    Node.Builder makePrefixNode(int priority, String prefix);
+
+    /**
+     * Creates a node builder from a prefix string and priority
+     *
+     * @param priority the priority
+     * @param suffix the suffix string
+     * @return a node builder instance
+     * @throws NullPointerException if the suffix is null
+     */
+    Node.Builder makeSuffixNode(int priority, String suffix);
+
+}

api/src/main/java/me/lucko/luckperms/api/PermissionHolder.java

@@ -31,56 +31,109 @@ import java.util.Set;
 import java.util.SortedSet;
 
 /**
- * Interface for internal PermissionHolder (user/group) instances
+ * An object capable of holding permissions
+ *
+ * <p> Any changes made will be lost unless the instance is saved back to the {@link Storage}.
  */
-@SuppressWarnings("unused")
 public interface PermissionHolder {
 
     /**
-     * @return the identifier for this object. either a uuid string or name
-     * However, you should really just use {@link User#getUuid()}, {@link User#getName()} or {@link Group#getName()}
+     * Gets the objects name
+     *
+     * <p> {@link User#getUuid()}, {@link User#getName()} or {@link Group#getName()} should normally be used instead of
+     * this method.
+     *
+     * @return the identifier for this object. Either a uuid string or name.
      */
     String getObjectName();
 
     /**
-     * Gets an immutable Set of the objects permission nodes
+     * Gets a sorted set of all held permissions.
+     *
      * @return an immutable set of permissions in priority order
      * @since 2.6
      */
-    SortedSet<Node> getPermissions();
+    SortedSet<? extends Node> getPermissions();
 
     /**
-     * Similar to {@link #getPermissions()}, except excluding transient permissions
+     * Similar to {@link #getPermissions()}, except without transient permissions
+     *
      * @return a set of nodes
      * @since 2.6
      */
-    Set<Node> getEnduringPermissions();
+    Set<? extends Node> getEnduringPermissions();
 
     /**
-     * Similar to {@link #getPermissions()}, except excluding non-transient permissions
+     * Gets an immutable set of all transiently held permissions.
+     *
+     * <p> Transient permissions only exist for the duration of the session.
+     *
      * @return a set of nodes
      * @since 2.6
      */
-    Set<Node> getTransientPermissions();
+    Set<? extends Node> getTransientPermissions();
 
 
     /**
      * Gets an immutable set of the nodes that this object has and inherits
+     *
      * @return an immutable set of permissions
      * @since 2.6
+     * @deprecated in favour of {@link #getAllNodes(Contexts)}
      */
+    @Deprecated
     Set<Node> getAllNodes();
 
+    /**
+     * Gets a mutable sorted set of the nodes that this object has and inherits, filtered by context
+     * Unlike {@link #getAllNodesFiltered(Contexts)}, this method will not filter individual nodes. The context is only
+     * used to determine which groups should apply.
+     * Nodes are sorted into priority order.
+     *
+     * @param contexts the context for the lookup,
+     * @return a mutable sorted set of permissions
+     * @throws NullPointerException if the context is null
+     * @since 2.11
+     */
+    SortedSet<LocalizedNode> getAllNodes(Contexts contexts);
+
+    /**
+     * Gets a mutable set of the nodes that this object has and inherits, filtered by context.
+     * Unlike {@link #getAllNodes(Contexts)}, this method WILL filter individual nodes, and only return ones that fully
+     * meet the context provided.
+     *
+     * @param contexts the context for the lookup
+     * @return a mutable set of permissions
+     * @throws NullPointerException if the context is null
+     * @since 2.11
+     */
+    Set<LocalizedNode> getAllNodesFiltered(Contexts contexts);
+
+    /**
+     * Converts the output of {@link #getAllNodesFiltered(Contexts)}, and expands shorthand permissions.
+     * @param contexts the context for the lookup
+     * @param lowerCase if the keys should be made lowercase whilst being exported
+     * @return a mutable map of permissions
+     */
+    Map<String, Boolean> exportNodes(Contexts contexts, boolean lowerCase);
+
     /**
      * Gets an immutable Map of the objects permission nodes
+     *
      * @return an immutable map of permissions
      * @deprecated in favour of {@link #getPermissions()}
      */
     @Deprecated
     Map<String, Boolean> getNodes();
 
+    /**
+     * Removes temporary permissions that have expired
+     */
+    void auditTemporaryPermissions();
+
     /**
      * Checks to see if the object has a certain permission
+     *
      * @param node the node to check for
      * @return a Tristate for the holders permission status for the node
      * @throws NullPointerException if the node is null
@@ -90,6 +143,7 @@ public interface PermissionHolder {
 
     /**
      * Checks to see if the object has a certain permission
+     *
      * @param node the node to check for
      * @return a Tristate for the holders permission status for the node
      * @throws NullPointerException if the node is null
@@ -99,75 +153,82 @@ public interface PermissionHolder {
 
     /**
      * Checks to see if the object has a certain permission
+     *
      * @param node The permission node
-     * @param b If the node is true/false(negated)
+     * @param b    If the node is true/false(negated)
      * @return true if the object has the permission
-     * @throws NullPointerException if the node is null
+     * @throws NullPointerException     if the node is null
      * @throws IllegalArgumentException if the node is invalid
      */
     boolean hasPermission(String node, boolean b);
 
     /**
      * Checks to see the the object has a permission on a certain server
-     * @param node The permission node
-     * @param b If the node is true/false(negated)
+     *
+     * @param node   The permission node
+     * @param b      If the node is true/false(negated)
      * @param server The server
      * @return true if the object has the permission
-     * @throws NullPointerException if the node or server is null
+     * @throws NullPointerException     if the node or server is null
      * @throws IllegalArgumentException if the node or server is invalid
      */
     boolean hasPermission(String node, boolean b, String server);
 
     /**
      * Checks to see the the object has a permission on a certain server and world
-     * @param node The permission node
-     * @param b If the node is true/false(negated)
+     *
+     * @param node   The permission node
+     * @param b      If the node is true/false(negated)
      * @param server The server
-     * @param world The world
+     * @param world  The world
      * @return true if the object has the permission
-     * @throws NullPointerException if the node, server or world is null
+     * @throws NullPointerException     if the node, server or world is null
      * @throws IllegalArgumentException if the node, server or world is invalid
      */
     boolean hasPermission(String node, boolean b, String server, String world);
 
     /**
      * Checks to see the the object has a permission
-     * @param node The permission node
-     * @param b If the node is true/false(negated)
+     *
+     * @param node      The permission node
+     * @param b         If the node is true/false(negated)
      * @param temporary if the permission is temporary
      * @return true if the object has the permission
-     * @throws NullPointerException if the node is null
+     * @throws NullPointerException     if the node is null
      * @throws IllegalArgumentException if the node is invalid
      */
     boolean hasPermission(String node, boolean b, boolean temporary);
 
     /**
      * Checks to see the the object has a permission on a certain server
-     * @param node The permission node
-     * @param b If the node is true/false(negated)
-     * @param server The server to check on
+     *
+     * @param node      The permission node
+     * @param b         If the node is true/false(negated)
+     * @param server    The server to check on
      * @param temporary if the permission is temporary
      * @return true if the object has the permission
-     * @throws NullPointerException if the node or server is null
+     * @throws NullPointerException     if the node or server is null
      * @throws IllegalArgumentException if the node or server is invalid
      */
     boolean hasPermission(String node, boolean b, String server, boolean temporary);
 
     /**
      * Checks to see the the object has a permission on a certain server and world
-     * @param node The permission node
-     * @param b If the node is true/false(negated)
-     * @param server The server to check on
-     * @param world The world to check on
+     *
+     * @param node      The permission node
+     * @param b         If the node is true/false(negated)
+     * @param server    The server to check on
+     * @param world     The world to check on
      * @param temporary if the permission is temporary
      * @return true if the object has the permission
-     * @throws NullPointerException if the node, server or world is null
+     * @throws NullPointerException     if the node, server or world is null
      * @throws IllegalArgumentException if the node, server or world is invalid
      */
     boolean hasPermission(String node, boolean b, String server, String world, boolean temporary);
 
     /**
      * Cheks to see if the object inherits a certain permission
+     *
      * @param node the node to check for
      * @return a Tristate for the holders inheritance status for the node
      * @throws NullPointerException if the node is null
@@ -177,78 +238,85 @@ public interface PermissionHolder {
 
     /**
      * Checks to see if the object inherits a certain permission
+     *
      * @param node The permission node
-     * @param b If the node is true/false(negated)
+     * @param b    If the node is true/false(negated)
      * @return true if the object inherits the permission
-     * @throws NullPointerException if the node is null
+     * @throws NullPointerException     if the node is null
      * @throws IllegalArgumentException if the node is invalid
      */
     boolean inheritsPermission(String node, boolean b);
 
     /**
      * Checks to see the the object inherits a permission on a certain server
-     * @param node The permission node
-     * @param b If the node is true/false(negated)
+     *
+     * @param node   The permission node
+     * @param b      If the node is true/false(negated)
      * @param server The server
      * @return true if the object inherits the permission
-     * @throws NullPointerException if the node or server is null
+     * @throws NullPointerException     if the node or server is null
      * @throws IllegalArgumentException if the node or server is invalid
      */
     boolean inheritsPermission(String node, boolean b, String server);
 
     /**
      * Checks to see the the object inherits a permission on a certain server and world
-     * @param node The permission node
-     * @param b If the node is true/false(negated)
+     *
+     * @param node   The permission node
+     * @param b      If the node is true/false(negated)
      * @param server The server
-     * @param world The world
+     * @param world  The world
      * @return true if the object inherits the permission
-     * @throws NullPointerException if the node, server or world is null
+     * @throws NullPointerException     if the node, server or world is null
      * @throws IllegalArgumentException if the node server or world is invalid
      */
     boolean inheritsPermission(String node, boolean b, String server, String world);
 
     /**
      * Checks to see if the object inherits a permission
-     * @param node The permission node
-     * @param b If the node is true/false(negated)
+     *
+     * @param node      The permission node
+     * @param b         If the node is true/false(negated)
      * @param temporary if the permission is temporary
      * @return true if the object inherits the permission
-     * @throws NullPointerException if the node is null
+     * @throws NullPointerException     if the node is null
      * @throws IllegalArgumentException if the node is invalid
      */
     boolean inheritsPermission(String node, boolean b, boolean temporary);
 
     /**
      * Checks to see if the object inherits a permission on a certain server
-     * @param node The permission node
-     * @param b If the node is true/false(negated)
-     * @param server The server
+     *
+     * @param node      The permission node
+     * @param b         If the node is true/false(negated)
+     * @param server    The server
      * @param temporary if the permission is temporary
      * @return true if the object inherits the permission
-     * @throws NullPointerException if the node or server is null
+     * @throws NullPointerException     if the node or server is null
      * @throws IllegalArgumentException if the node or server is invalid
      */
     boolean inheritsPermission(String node, boolean b, String server, boolean temporary);
 
     /**
      * Checks to see if the object inherits a permission on a certain server and world
-     * @param node The permission node
-     * @param b If the node is true/false(negated)
-     * @param server The server
-     * @param world The world
+     *
+     * @param node      The permission node
+     * @param b         If the node is true/false(negated)
+     * @param server    The server
+     * @param world     The world
      * @param temporary if the permission is temporary
      * @return true if the object inherits the permission
-     * @throws NullPointerException if the node, server or world is null
+     * @throws NullPointerException     if the node, server or world is null
      * @throws IllegalArgumentException if the node, server or world if invalid
      */
     boolean inheritsPermission(String node, boolean b, String server, String world, boolean temporary);
 
     /**
      * Sets a permission for the object
+     *
      * @param node The node to be set
      * @throws ObjectAlreadyHasException if the object already has the permission
-     * @throws NullPointerException if the node is null
+     * @throws NullPointerException      if the node is null
      * @since 2.6
      */
     void setPermission(Node node) throws ObjectAlreadyHasException;
@@ -264,20 +332,22 @@ public interface PermissionHolder {
      * want it to persist, and have to worry about removing it when they log out.
      *
      * <p> For unsetting a transient permission, see {@link #unsetTransientPermission(Node)}
+     *
      * @param node The node to be set
      * @throws ObjectAlreadyHasException if the object already has the permission
-     * @throws NullPointerException if the node is null
+     * @throws NullPointerException      if the node is null
      * @since 2.6
      */
     void setTransientPermission(Node node) throws ObjectAlreadyHasException;
 
     /**
      * Sets a permission for the object
-     * @param node The node to be set
+     *
+     * @param node  The node to be set
      * @param value What to set the node to - true/false(negated)
      * @throws ObjectAlreadyHasException if the object already has the permission
-     * @throws NullPointerException if the node is null
-     * @throws IllegalArgumentException if the node is invalid
+     * @throws NullPointerException      if the node is null
+     * @throws IllegalArgumentException  if the node is invalid
      * @deprecated in favour of {@link #setPermission(Node)}
      */
     @Deprecated
@@ -285,12 +355,13 @@ public interface PermissionHolder {
 
     /**
      * Sets a permission for the object on a specific server
-     * @param node The node to set
-     * @param value What to set the node to - true/false(negated)
+     *
+     * @param node   The node to set
+     * @param value  What to set the node to - true/false(negated)
      * @param server The server to set the permission on
      * @throws ObjectAlreadyHasException if the object already has the permission
-     * @throws NullPointerException if the node or server is null
-     * @throws IllegalArgumentException if the node or server is invalid
+     * @throws NullPointerException      if the node or server is null
+     * @throws IllegalArgumentException  if the node or server is invalid
      * @deprecated in favour of {@link #setPermission(Node)}
      */
     @Deprecated
@@ -298,13 +369,14 @@ public interface PermissionHolder {
 
     /**
      * Sets a permission for the object on a specific server and world
-     * @param node The node to set
-     * @param value What to set the node to - true/false(negated)
+     *
+     * @param node   The node to set
+     * @param value  What to set the node to - true/false(negated)
      * @param server The server to set the permission on
-     * @param world The world to set the permission on
+     * @param world  The world to set the permission on
      * @throws ObjectAlreadyHasException if the object already has the permission
-     * @throws NullPointerException if the node, server or world is null
-     * @throws IllegalArgumentException if the node, server or world is invalid
+     * @throws NullPointerException      if the node, server or world is null
+     * @throws IllegalArgumentException  if the node, server or world is invalid
      * @deprecated in favour of {@link #setPermission(Node)}
      */
     @Deprecated
@@ -312,12 +384,13 @@ public interface PermissionHolder {
 
     /**
      * Sets a temporary permission for the object
-     * @param node The node to set
-     * @param value What to set the node to - true/false(negated)
+     *
+     * @param node     The node to set
+     * @param value    What to set the node to - true/false(negated)
      * @param expireAt The time in unixtime when the permission will expire
      * @throws ObjectAlreadyHasException if the object already has the permission
-     * @throws NullPointerException if the node is null
-     * @throws IllegalArgumentException if the node is invalid or if the expiry time is in the past
+     * @throws NullPointerException      if the node is null
+     * @throws IllegalArgumentException  if the node is invalid or if the expiry time is in the past
      * @deprecated in favour of {@link #setPermission(Node)}
      */
     @Deprecated
@@ -325,13 +398,14 @@ public interface PermissionHolder {
 
     /**
      * Sets a temporary permission for the object on a specific server
-     * @param node The node to set
-     * @param value What to set the node to - true/false(negated)
-     * @param server The server to set the permission on
+     *
+     * @param node     The node to set
+     * @param value    What to set the node to - true/false(negated)
+     * @param server   The server to set the permission on
      * @param expireAt The time in unixtime when the permission will expire
      * @throws ObjectAlreadyHasException if the object already has the permission
-     * @throws NullPointerException if the node or server is null
-     * @throws IllegalArgumentException if the node/server is invalid or if the expiry time is in the past
+     * @throws NullPointerException      if the node or server is null
+     * @throws IllegalArgumentException  if the node/server is invalid or if the expiry time is in the past
      * @deprecated in favour of {@link #setPermission(Node)}
      */
     @Deprecated
@@ -339,14 +413,15 @@ public interface PermissionHolder {
 
     /**
      * Sets a temporary permission for the object on a specific server and world
-     * @param node The node to set
-     * @param value What to set the node to - true/false(negated)
-     * @param server The server to set the permission on
-     * @param world The world to set the permission on
+     *
+     * @param node     The node to set
+     * @param value    What to set the node to - true/false(negated)
+     * @param server   The server to set the permission on
+     * @param world    The world to set the permission on
      * @param expireAt The time in unixtime when the permission will expire
      * @throws ObjectAlreadyHasException if the object already has the permission
-     * @throws NullPointerException if the node, server or world is null
-     * @throws IllegalArgumentException if the node/server/world is invalid, or if the expiry time is in the past
+     * @throws NullPointerException      if the node, server or world is null
+     * @throws IllegalArgumentException  if the node/server/world is invalid, or if the expiry time is in the past
      * @deprecated in favour of {@link #setPermission(Node)}
      */
     @Deprecated
@@ -354,6 +429,7 @@ public interface PermissionHolder {
 
     /**
      * Unsets a permission for the object
+     *
      * @param node The node to be unset
      * @throws ObjectLacksException if the node wasn't already set
      * @throws NullPointerException if the node is null
@@ -363,6 +439,7 @@ public interface PermissionHolder {
 
     /**
      * Unsets a transient permission for the object
+     *
      * @param node The node to be unset
      * @throws ObjectLacksException if the node wasn't already set
      * @throws NullPointerException if the node is null
@@ -372,10 +449,11 @@ public interface PermissionHolder {
 
     /**
      * Unsets a permission for the object
-     * @param node The node to be unset
+     *
+     * @param node      The node to be unset
      * @param temporary if the permission being removed is temporary
-     * @throws ObjectLacksException if the node wasn't already set
-     * @throws NullPointerException if the node is null
+     * @throws ObjectLacksException     if the node wasn't already set
+     * @throws NullPointerException     if the node is null
      * @throws IllegalArgumentException if the node is invalid
      * @deprecated in favour of {@link #unsetPermission(Node)}
      */
@@ -384,9 +462,10 @@ public interface PermissionHolder {
 
     /**
      * Unsets a permission for the object
+     *
      * @param node The node to be unset
-     * @throws ObjectLacksException if the node wasn't already set
-     * @throws NullPointerException if the node is null
+     * @throws ObjectLacksException     if the node wasn't already set
+     * @throws NullPointerException     if the node is null
      * @throws IllegalArgumentException if the node is invalid
      * @deprecated in favour of {@link #unsetPermission(Node)}
      */
@@ -395,10 +474,11 @@ public interface PermissionHolder {
 
     /**
      * Unsets a permission for the object on a specific server
-     * @param node The node to be unset
+     *
+     * @param node   The node to be unset
      * @param server The server to unset the node on
-     * @throws ObjectLacksException if the node wasn't already set
-     * @throws NullPointerException if the node or server is null
+     * @throws ObjectLacksException     if the node wasn't already set
+     * @throws NullPointerException     if the node or server is null
      * @throws IllegalArgumentException if the node or server is invalid
      * @deprecated in favour of {@link #unsetPermission(Node)}
      */
@@ -407,11 +487,12 @@ public interface PermissionHolder {
 
     /**
      * Unsets a permission for the object on a specific server and world
-     * @param node The node to be unset
+     *
+     * @param node   The node to be unset
      * @param server The server to unset the node on
-     * @param world The world to unset the node on
-     * @throws ObjectLacksException if the node wasn't already set
-     * @throws NullPointerException if the node, server or world is null
+     * @param world  The world to unset the node on
+     * @throws ObjectLacksException     if the node wasn't already set
+     * @throws NullPointerException     if the node, server or world is null
      * @throws IllegalArgumentException if the node, server or world is invalid
      * @deprecated in favour of {@link #unsetPermission(Node)}
      */
@@ -420,11 +501,12 @@ public interface PermissionHolder {
 
     /**
      * Unsets a permission for the object on a specific server
-     * @param node The node to be unset
-     * @param server The server to unset the node on
+     *
+     * @param node      The node to be unset
+     * @param server    The server to unset the node on
      * @param temporary if the permission being unset is temporary
-     * @throws ObjectLacksException if the node wasn't already set
-     * @throws NullPointerException if the node or server is null
+     * @throws ObjectLacksException     if the node wasn't already set
+     * @throws NullPointerException     if the node or server is null
      * @throws IllegalArgumentException if the node or server is invalid
      * @deprecated in favour of {@link #unsetPermission(Node)}
      */
@@ -433,24 +515,129 @@ public interface PermissionHolder {
 
     /**
      * Unsets a permission for the object on a specific server and world
-     * @param node The node to be unset
-     * @param server The server to unset the node on
-     * @param world The world to unset the node on
+     *
+     * @param node      The node to be unset
+     * @param server    The server to unset the node on
+     * @param world     The world to unset the node on
      * @param temporary if the permission being unset is temporary
-     * @throws ObjectLacksException if the node wasn't already set
-     * @throws NullPointerException if the node, server or world is null
+     * @throws ObjectLacksException     if the node wasn't already set
+     * @throws NullPointerException     if the node, server or world is null
      * @throws IllegalArgumentException if the node, server or world is invalid
      * @deprecated in favour of {@link #unsetPermission(Node)}
      */
     @Deprecated
     void unsetPermission(String node, String server, String world, boolean temporary) throws ObjectLacksException;
 
+    /**
+     * Clears all nodes held by the object
+     *
+     * @since 2.17
+     */
+    void clearNodes();
+
+    /**
+     * Clears all nodes held by the object on a specific server
+     *
+     * @param server the server to filter by, can be null
+     * @since 2.17
+     */
+    void clearNodes(String server);
+
+    /**
+     * Clears all nodes held by the object on a specific server and world
+     *
+     * @param server the server to filter by, can be null
+     * @param world the world to filter by, can be null
+     * @since 2.17
+     */
+    void clearNodes(String server, String world);
+
+    /**
+     * Clears all parent groups
+     *
+     * @since 2.17
+     */
+    void clearParents();
+
+    /**
+     * Clears all parents on a specific server
+     *
+     * @param server the server to filter by, can be null
+     * @since 2.17
+     */
+    void clearParents(String server);
+
+    /**
+     * Clears all parents on a specific server and world
+     *
+     * @param server the server to filter by, can be null
+     * @param world the world to filter by, can be null
+     * @since 2.17
+     */
+    void clearParents(String server, String world);
+
+    /**
+     * Clears all meta held by the object
+     *
+     * @since 2.17
+     */
+    void clearMeta();
+
+    /**
+     * Clears all meta held by the object on a specific server
+     *
+     * @param server the server to filter by, can be null
+     * @since 2.17
+     */
+    void clearMeta(String server);
+
+    /**
+     * Clears all meta held by the object on a specific server and world
+     *
+     * @param server the server to filter by, can be null
+     * @param world the world to filter by, can be null
+     * @since 2.17
+     */
+    void clearMeta(String server, String world);
+
+    /**
+     * Clears all meta for a given key.
+     *
+     * @param key the meta key
+     * @param server the server to filter by, can be null
+     * @param world the world to filter by, can be null
+     * @param temporary whether the query is for temporary nodes or not.
+     */
+    void clearMetaKeys(String key, String server, String world, boolean temporary);
+
+    /**
+     * Clears all transient permissions the holder has.
+     */
+    void clearTransientNodes();
+
+    /**
+     * Processes the nodes and returns the non-temporary ones.
+     *
+     * @return a set of permanent nodes
+     * @since 2.6
+     */
+    Set<Node> getPermanentPermissionNodes();
+
+    /**
+     * Processes the nodes and returns the temporary ones.
+     *
+     * @return a set of temporary nodes
+     * @since 2.6
+     */
+    Set<Node> getTemporaryPermissionNodes();
+
     /**
      * Gets the permissions and inherited permissions that apply to a specific server and world
-     * @param server The server to get nodes for
-     * @param world The world to get nodes for
+     *
+     * @param server         The server to get nodes for
+     * @param world          The world to get nodes for
      * @param excludedGroups Groups that shouldn't be inherited (to prevent circular inheritance issues)
-     * @param possibleNodes A list of possible permission nodes for wildcard permission handling
+     * @param possibleNodes  A list of possible permission nodes for wildcard permission handling
      * @return a {@link Map} of the permissions
      * @deprecated in favour of {@link #getPermissions(String, String, Map, boolean, List, boolean)}
      */
@@ -459,8 +646,9 @@ public interface PermissionHolder {
 
     /**
      * Gets the permissions and inherited permissions that apply to a specific server and world
-     * @param server The server to get nodes for
-     * @param world The world to get nodes for
+     *
+     * @param server         The server to get nodes for
+     * @param world          The world to get nodes for
      * @param excludedGroups Groups that shouldn't be inherited (to prevent circular inheritance issues)
      * @return a {@link Map} of the permissions
      * @deprecated in favour of {@link #getPermissions(String, String, Map, boolean, List, boolean)}
@@ -470,9 +658,10 @@ public interface PermissionHolder {
 
     /**
      * Gets the permissions and inherited permissions that apply to a specific server
-     * @param server The server to get nodes for
+     *
+     * @param server         The server to get nodes for
      * @param excludedGroups Groups that shouldn't be inherited (to prevent circular inheritance issues)
-     * @param possibleNodes A list of possible permission nodes for wildcard permission handling
+     * @param possibleNodes  A list of possible permission nodes for wildcard permission handling
      * @return a {@link Map} of the permissions
      * @deprecated in favour of {@link #getPermissions(String, String, Map, boolean, List, boolean)}
      */
@@ -481,7 +670,8 @@ public interface PermissionHolder {
 
     /**
      * Gets the permissions and inherited permissions that apply to a specific server
-     * @param server The server to get nodes for
+     *
+     * @param server         The server to get nodes for
      * @param excludedGroups Groups that shouldn't be inherited (to prevent circular inheritance issues)
      * @return a {@link Map} of the permissions
      * @deprecated in favour of {@link #getPermissions(String, String, Map, boolean, List, boolean)}
@@ -491,50 +681,36 @@ public interface PermissionHolder {
 
     /**
      * Convert the holders nodes into a Map of permissions to be applied on the platform
-     * @param server the server
-     * @param world the world
-     * @param extraContext any extra context to filter by
+     *
+     * @param server        the server
+     * @param world         the world
+     * @param extraContext  any extra context to filter by
      * @param includeGlobal whether to include global nodes
      * @param possibleNodes a list of possible permissions for resolving wildcards
-     * @param applyGroups if inherited group permissions should be included
+     * @param applyGroups   if inherited group permissions should be included
      * @return a map of permissions
      * @since 2.6
+     * @deprecated in favour of {@link #getAllNodesFiltered(Contexts)}
      */
+    @Deprecated
     Map<String, Boolean> getPermissions(String server, String world, Map<String, String> extraContext, boolean includeGlobal, List<String> possibleNodes, boolean applyGroups);
 
     /**
      * Processes the nodes and returns the temporary ones.
+     *
      * @return a map of temporary nodes
      * @deprecated in favour of {@link #getTemporaryPermissionNodes()}
      */
     @Deprecated
     Map<Map.Entry<String, Boolean>, Long> getTemporaryNodes();
 
-    /**
-     * Processes the nodes and returns the temporary ones.
-     * @return a set of temporary nodes
-     * @since 2.6
-     */
-    Set<Node> getTemporaryPermissionNodes();
-
     /**
      * Processes the nodes and returns the non-temporary ones.
+     *
      * @return a map of permanent nodes
      * @deprecated in favour of {@link #getPermanentPermissionNodes()}
      */
     @Deprecated
     Map<String, Boolean> getPermanentNodes();
 
-    /**
-     * Processes the nodes and returns the non-temporary ones.
-     * @return a set of permanent nodes
-     * @since 2.6
-     */
-    Set<Node> getPermanentPermissionNodes();
-
-    /**
-     * Removes temporary permissions that have expired
-     */
-    void auditTemporaryPermissions();
-
 }

api/src/main/java/me/lucko/luckperms/api/PlatformType.java

@@ -23,7 +23,8 @@
 package me.lucko.luckperms.api;
 
 /**
- * Represents the platform type that LuckPerms is running on
+ * The platforms which LuckPerms can run on
+ *
  * @since 2.7
  */
 public enum PlatformType {

api/src/main/java/me/lucko/luckperms/api/Storage.java

@@ -0,0 +1,273 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.api;
+
+import java.util.List;
+import java.util.Set;
+import java.util.UUID;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.Executor;
+import java.util.function.Consumer;
+
+/**
+ * A means of loading and saving data to/from the Storage provider.
+ *
+ * <p>All methods return {@link CompletableFuture}s, which will be populated with the result once the data has been
+ * loaded asynchronously. Care should be taken when using the methods to ensure that the main server thread is not
+ * blocked.
+ *
+ * <p>Methods such as {@link CompletableFuture#get()} and equivalent should <strong>not</strong> be called on the main
+ * server thread. If you need to use the result of these operations on the main server thread, please register a
+ * callback using {@link CompletableFuture#thenAcceptAsync(Consumer, Executor)} and {@link #getSyncExecutor()}.
+ *
+ * @since 2.14
+ */
+public interface Storage {
+
+    /**
+     * Get the name of the storage implementation.
+     *
+     * @return the name of the implementation
+     */
+    String getName();
+
+    /**
+     * Return whether the storage instance is allowing logins on the platform.
+     *
+     * @return true if logins are enabled
+     */
+    boolean isAcceptingLogins();
+
+    /**
+     * Returns an executor which will run all passed runnables on the main server thread.
+     *
+     * @return an executor instance
+     */
+    Executor getSyncExecutor();
+
+    /**
+     * Returns an executor which will run all passed runnables asynchronously using the platforms scheduler and thread
+     * pools.
+     *
+     * @return an executor instance
+     */
+    Executor getAsyncExecutor();
+
+    /**
+     * Saves an action to storage
+     *
+     * @param entry the log entry to be saved
+     * @return true if the operation completed successfully.
+     * @throws NullPointerException if entry is null
+     */
+    CompletableFuture<Boolean> logAction(LogEntry entry);
+
+    /**
+     * Loads and returns the entire log from storage
+     *
+     * @return a log instance, could be null if loading failed
+     */
+    CompletableFuture<Log> getLog();
+
+    /**
+     * Loads a user's data from the main storage into the plugins local storage.
+     *
+     * @param uuid     the uuid of the user to load
+     * @param username the users username. (if you want to specify <code>null</code> here, just input "null" as a
+     *                 string.)
+     * @return if the operation completed successfully
+     * @throws NullPointerException if uuid or username is null
+     */
+    CompletableFuture<Boolean> loadUser(UUID uuid, String username);
+
+    /**
+     * Saves a user object back to storage. You should call this after you make any changes to a user.
+     *
+     * @param user the user to save
+     * @return true if the operation completed successfully.
+     * @throws NullPointerException  if user is null
+     * @throws IllegalStateException if the user instance was not obtained from LuckPerms.
+     */
+    CompletableFuture<Boolean> saveUser(User user);
+
+    /**
+     * Removes users from the main storage who are "default". This is called every time the plugin loads.
+     *
+     * @return true if the operation completed successfully
+     */
+    CompletableFuture<Boolean> cleanupUsers();
+
+    /**
+     * Gets a set all "unique" user UUIDs.
+     * "Unique" meaning the user isn't just a member of the "default" group.
+     *
+     * @return a set of uuids, or null if the operation failed.
+     */
+    CompletableFuture<Set<UUID>> getUniqueUsers();
+
+    /**
+     * Searches for a list of users with a given permission.
+     *
+     * @param permission the permission to search for
+     * @return a list of held permissions, or null if the operation failed
+     * @throws NullPointerException if the permission is null
+     * @since 2.17
+     */
+    CompletableFuture<List<HeldPermission<UUID>>> getUsersWithPermission(String permission);
+
+    /**
+     * Creates and loads a group into the plugins local storage
+     *
+     * @param name the name of the group
+     * @return true if the operation completed successfully
+     * @throws NullPointerException     if name is null
+     * @throws IllegalArgumentException if the name is invalid
+     */
+    CompletableFuture<Boolean> createAndLoadGroup(String name);
+
+    /**
+     * Loads a group into the plugins local storage.
+     *
+     * @param name the name of the group
+     * @return true if the operation completed successfully
+     * @throws NullPointerException     if name is null
+     * @throws IllegalArgumentException if the name is invalid
+     */
+    CompletableFuture<Boolean> loadGroup(String name);
+
+    /**
+     * Loads all groups from the storage into memory
+     *
+     * @return true if the operation completed successfully.
+     */
+    CompletableFuture<Boolean> loadAllGroups();
+
+    /**
+     * Saves a group back to storage. You should call this after you make any changes to a group.
+     *
+     * @param group the group to save
+     * @return true if the operation completed successfully.
+     * @throws NullPointerException  if group is null
+     * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
+     */
+    CompletableFuture<Boolean> saveGroup(Group group);
+
+    /**
+     * Permanently deletes a group from storage.
+     *
+     * @param group the group to delete
+     * @return true if the operation completed successfully.
+     * @throws NullPointerException  if group is null
+     * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
+     */
+    CompletableFuture<Boolean> deleteGroup(Group group);
+
+    /**
+     * Searches for a list of groups with a given permission.
+     *
+     * @param permission the permission to search for
+     * @return a list of held permissions, or null if the operation failed
+     * @throws NullPointerException if the permission is null
+     * @since 2.17
+     */
+    CompletableFuture<List<HeldPermission<String>>> getGroupsWithPermission(String permission);
+
+    /**
+     * Creates and loads a track into the plugins local storage
+     *
+     * @param name the name of the track
+     * @return true if the operation completed successfully
+     * @throws NullPointerException     if name is null
+     * @throws IllegalArgumentException if the name is invalid
+     */
+    CompletableFuture<Boolean> createAndLoadTrack(String name);
+
+    /**
+     * Loads a track into the plugins local storage.
+     *
+     * @param name the name of the track
+     * @return true if the operation completed successfully
+     * @throws NullPointerException     if name is null
+     * @throws IllegalArgumentException if the name is invalid
+     */
+    CompletableFuture<Boolean> loadTrack(String name);
+
+    /**
+     * Loads all tracks from the storage into memory
+     *
+     * @return true if the operation completed successfully.
+     */
+    CompletableFuture<Boolean> loadAllTracks();
+
+    /**
+     * Saves a track back to storage. You should call this after you make any changes to a track.
+     *
+     * @param track the track to save
+     * @return true if the operation completed successfully.
+     * @throws NullPointerException  if track is null
+     * @throws IllegalStateException if the track instance was not obtained from LuckPerms.
+     */
+    CompletableFuture<Boolean> saveTrack(Track track);
+
+    /**
+     * Permanently deletes a track from storage
+     *
+     * @param track the track to delete
+     * @return true if the operation completed successfully.
+     * @throws NullPointerException  if track is null
+     * @throws IllegalStateException if the track instance was not obtained from LuckPerms.
+     */
+    CompletableFuture<Boolean> deleteTrack(Track track);
+
+    /**
+     * Saves UUID caching data to the global cache
+     *
+     * @param username the users username
+     * @param uuid     the users mojang unique id
+     * @return true if the operation completed successfully.
+     * @throws NullPointerException     if either parameters are null
+     * @throws IllegalArgumentException if the username is invalid
+     */
+    CompletableFuture<Boolean> saveUUIDData(String username, UUID uuid);
+
+    /**
+     * Gets a UUID from a username
+     *
+     * @param username the corresponding username
+     * @return a uuid object, could be null
+     * @throws NullPointerException     if either parameters are null
+     * @throws IllegalArgumentException if the username is invalid
+     */
+    CompletableFuture<UUID> getUUID(String username);
+
+    /**
+     * Gets a username from a UUID
+     *
+     * @param uuid the corresponding uuid
+     * @return a name string, could be null
+     * @throws NullPointerException if either parameters are null
+     * @since 2.17
+     */
+    CompletableFuture<String> getName(UUID uuid);
+
+}

api/src/main/java/me/lucko/luckperms/api/Track.java

@@ -28,80 +28,89 @@ import me.lucko.luckperms.exceptions.ObjectLacksException;
 import java.util.List;
 
 /**
- * Interface for internal Track instances
+ * An ordered collection of groups for easy promotions and demotions
  */
-@SuppressWarnings("unused")
 public interface Track {
 
     /**
+     * Gets the name of this track
      * @return the name of this track
      */
     String getName();
 
     /**
      * Gets an ordered list of the groups on this track
-     * Index 0 is the first/lowest group in (or start of) the track
+     *
+     * <p> Index 0 is the first/lowest group in (or start of) the track
+     *
      * @return an ordered {@link List} of the groups on this track
      */
     List<String> getGroups();
 
     /**
      * Gets the number of groups on this track
+     *
      * @return the number of groups on this track
      */
     int getSize();
 
     /**
      * Gets the next group on the track, after the one provided
+     *
      * @param current the group before the group being requested
      * @return the group name, or null if the end of the track has been reached
-     * @throws ObjectLacksException if the track does not contain the group given
-     * @throws NullPointerException if the group is null
+     * @throws ObjectLacksException  if the track does not contain the group given
+     * @throws NullPointerException  if the group is null
      * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
      */
     String getNext(Group current) throws ObjectLacksException;
 
     /**
      * Gets the previous group on the track, before the one provided
+     *
      * @param current the group after the group being requested
      * @return the group name, or null if the start of the track has been reached
-     * @throws ObjectLacksException if the track does not contain the group given
-     * @throws NullPointerException if the group is null
+     * @throws ObjectLacksException  if the track does not contain the group given
+     * @throws NullPointerException  if the group is null
      * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
      */
     String getPrevious(Group current) throws ObjectLacksException;
 
     /**
      * Appends a group to the end of this track
+     *
      * @param group the group to append
      * @throws ObjectAlreadyHasException if the group is already on this track somewhere
-     * @throws NullPointerException if the group is null
-     * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
+     * @throws NullPointerException      if the group is null
+     * @throws IllegalStateException     if the group instance was not obtained from LuckPerms.
      */
     void appendGroup(Group group) throws ObjectAlreadyHasException;
 
     /**
      * Inserts a group at a certain position on this track
-     * @param group the group to be inserted
+     *
+     * @param group    the group to be inserted
      * @param position the index position (a value of 0 inserts at the start)
      * @throws ObjectAlreadyHasException if the group is already on this track somewhere
      * @throws IndexOutOfBoundsException if the position is less than 0 or greater than the size of the track
-     * @throws NullPointerException if the group is null
-     * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
+     * @throws NullPointerException      if the group is null
+     * @throws IllegalStateException     if the group instance was not obtained from LuckPerms.
      */
     void insertGroup(Group group, int position) throws ObjectAlreadyHasException, IndexOutOfBoundsException;
 
     /**
      * Removes a group from this track
+     *
      * @param group the group to remove
-     * @throws ObjectLacksException if the group is not on this track
-     * @throws NullPointerException if the group is null
+     * @throws ObjectLacksException  if the group is not on this track
+     * @throws NullPointerException  if the group is null
      * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
      */
     void removeGroup(Group group) throws ObjectLacksException;
 
     /**
      * Removes a group from this track
+     *
      * @param group the group to remove
      * @throws ObjectLacksException if the group is not on this track
      * @throws NullPointerException if the group is null
@@ -110,15 +119,17 @@ public interface Track {
 
     /**
      * Checks if a group features on this track
+     *
      * @param group the group to check
      * @return true if the group is on this track
-     * @throws NullPointerException if the group is null
+     * @throws NullPointerException  if the group is null
      * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
      */
     boolean containsGroup(Group group);
 
     /**
      * Checks if a group features on this track
+     *
      * @param group the group to check
      * @return true if the group is on this track
      * @throws NullPointerException if the group is null
@@ -126,7 +137,7 @@ public interface Track {
     boolean containsGroup(String group);
 
     /**
-     * Clear all of the groups within this track
+     * Clear all of the groups from this track
      */
     void clearGroups();
 

api/src/main/java/me/lucko/luckperms/api/Tristate.java

@@ -23,25 +23,51 @@
 package me.lucko.luckperms.api;
 
 /**
- * Represents a permission value
+ * Represents a permission setting.
+ *
+ * <p> Consider a value of {@link #FALSE} to be a "negated" setting, and a value of {@link #UNDEFINED} to be a
+ * non-existent value.
  */
 public enum Tristate {
 
+    /**
+     * A value indicating a holder has a permission set.
+     */
     TRUE(true),
+
+    /**
+     * A value indicating a holder has a negated value for a permission.
+     */
     FALSE(false),
+
+    /**
+     * A value indicating a holder doesn't have a value for a permission set.
+     */
     UNDEFINED(false);
 
+    /**
+     * Converts from {@link Boolean} a boolean
+     *
+     * @param b the boolean
+     * @return {@link #TRUE} or {@link #FALSE}, depending on the value of the boolean.
+     */
+    public static Tristate fromBoolean(boolean b) {
+        return b ? TRUE : FALSE;
+    }
+
     private final boolean booleanValue;
 
     Tristate(boolean booleanValue) {
         this.booleanValue = booleanValue;
     }
 
+    /**
+     * Returns the value of the Tristate as a boolean.
+     * <p> A value of {@link #UNDEFINED} converts to false.
+     *
+     * @return a boolean representation of the Tristate.
+     */
     public boolean asBoolean() {
         return booleanValue;
     }
-
-    public static Tristate fromBoolean(boolean b) {
-        return b ? TRUE : FALSE;
-    }
 }

api/src/main/java/me/lucko/luckperms/api/User.java

@@ -22,50 +22,76 @@
 
 package me.lucko.luckperms.api;
 
+import me.lucko.luckperms.api.caching.UserData;
 import me.lucko.luckperms.exceptions.ObjectAlreadyHasException;
 import me.lucko.luckperms.exceptions.ObjectLacksException;
 
 import java.util.List;
+import java.util.Optional;
 import java.util.UUID;
 
 /**
- * Interface for internal User instances
+ * A player holding permission data
  */
-@SuppressWarnings("unused")
 public interface User extends PermissionHolder {
 
     /**
+     * Gets the users unique ID
+     *
      * @return the users Mojang assigned unique id
      */
     UUID getUuid();
 
     /**
+     * Gets the users username
+     *
      * @return the Users Username
      */
     String getName();
 
     /**
      * Gets the users primary group
+     *
      * @return the users primary group
      */
     String getPrimaryGroup();
 
     /**
      * Sets a users primary group
+     *
      * @param group the new primary group
      * @throws ObjectAlreadyHasException if the user already has this set as their primary group
-     * @throws IllegalStateException if the user is not a member of that group
-     * @throws NullPointerException if the group is null
+     * @throws IllegalStateException     if the user is not a member of that group
+     * @throws NullPointerException      if the group is null
      */
     void setPrimaryGroup(String group) throws ObjectAlreadyHasException;
 
     /**
-     * Refresh and re-assign the users permissions
+     * Refresh and re-assign the users permissions.
+     *
+     * <p> This request is not buffered, and the refresh call will be ran directly. This should ideally be called on
+     * an asynchronous thread.
      */
     void refreshPermissions();
 
+    /**
+     * Gets the user's {@link UserData} cache, if they have one setup.
+     *
+     * @return an optional, possibly containing the user's cached lookup data.
+     * @since 2.13
+     */
+    Optional<UserData> getUserDataCache();
+
+    /**
+     * Sets up the users data cache, if the don't have one setup already.
+     *
+     * @since 2.17
+     */
+    void setupDataCache();
+
     /**
      * Check to see if the user is a member of a group
+     *
      * @param group The group to check membership of
      * @return true if the user is a member of the group
      * @throws NullPointerException if the group is null
@@ -74,186 +100,198 @@ public interface User extends PermissionHolder {
 
     /**
      * Check to see if a user is a member of a group on a specific server
-     * @param group The group to check membership of
+     *
+     * @param group  The group to check membership of
      * @param server The server to check on
      * @return true if the user is a member of the group
-     * @throws NullPointerException if the group or server is null
+     * @throws NullPointerException     if the group or server is null
      * @throws IllegalArgumentException if the server is invalid
      */
     boolean isInGroup(Group group, String server);
 
     /**
      * Check to see if a user is a member of a group on a specific server and world
-     * @param group The group to check membership of
+     *
+     * @param group  The group to check membership of
      * @param server The server to check on
-     * @param world The world to check on
+     * @param world  The world to check on
      * @return true if the user is a member of the group
-     * @throws NullPointerException if the group, server or world is null
+     * @throws NullPointerException     if the group, server or world is null
      * @throws IllegalArgumentException if the server or world is invalid
      */
     boolean isInGroup(Group group, String server, String world);
 
     /**
      * Add a user to a group
+     *
      * @param group The group to add the user to
      * @throws ObjectAlreadyHasException if the user is already a member of the group
-     * @throws NullPointerException if the group is null
-     * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
+     * @throws NullPointerException      if the group is null
+     * @throws IllegalStateException     if the group instance was not obtained from LuckPerms.
      */
     void addGroup(Group group) throws ObjectAlreadyHasException;
 
     /**
      * Add a user to a group on a specific server
-     * @param group The group to add the user to
+     *
+     * @param group  The group to add the user to
      * @param server The server to add the group on
      * @throws ObjectAlreadyHasException if the user is already a member of the group on that server
-     * @throws NullPointerException if the group or server is null
-     * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
-     * @throws IllegalArgumentException if the server is invalid
+     * @throws NullPointerException      if the group or server is null
+     * @throws IllegalStateException     if the group instance was not obtained from LuckPerms.
+     * @throws IllegalArgumentException  if the server is invalid
      */
     void addGroup(Group group, String server) throws ObjectAlreadyHasException;
 
     /**
      * Add a user to a group on a specific server and world
-     * @param group The group to add the user to
+     *
+     * @param group  The group to add the user to
      * @param server The server to add the group on
-     * @param world The world to add the group on
+     * @param world  The world to add the group on
      * @throws ObjectAlreadyHasException if the user is already a member of the group on that server
-     * @throws NullPointerException if the group, server or world is null
-     * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
-     * @throws IllegalArgumentException if the server or world is invalid
+     * @throws NullPointerException      if the group, server or world is null
+     * @throws IllegalStateException     if the group instance was not obtained from LuckPerms.
+     * @throws IllegalArgumentException  if the server or world is invalid
      */
     void addGroup(Group group, String server, String world) throws ObjectAlreadyHasException;
 
     /**
      * Add a user to a group temporarily on a specific server
-     * @param group The group to add the user to
+     *
+     * @param group    The group to add the user to
      * @param expireAt when the group should expire
      * @throws ObjectAlreadyHasException if the user is already a member of the group on that server
-     * @throws NullPointerException if the group is null
-     * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
-     * @throws IllegalArgumentException if the expiry time is in the past
+     * @throws NullPointerException      if the group is null
+     * @throws IllegalStateException     if the group instance was not obtained from LuckPerms.
+     * @throws IllegalArgumentException  if the expiry time is in the past
      */
     void addGroup(Group group, long expireAt) throws ObjectAlreadyHasException;
 
     /**
      * Add a user to a group temporarily on a specific server
-     * @param group The group to add the user to
-     * @param server The server to add the group on
+     *
+     * @param group    The group to add the user to
+     * @param server   The server to add the group on
      * @param expireAt when the group should expire
      * @throws ObjectAlreadyHasException if the user is already a member of the group on that server
-     * @throws NullPointerException if the group or server is null
-     * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
-     * @throws IllegalArgumentException if the expiry time is in the past or the server is invalid
+     * @throws NullPointerException      if the group or server is null
+     * @throws IllegalStateException     if the group instance was not obtained from LuckPerms.
+     * @throws IllegalArgumentException  if the expiry time is in the past or the server is invalid
      */
     void addGroup(Group group, String server, long expireAt) throws ObjectAlreadyHasException;
 
     /**
      * Add a user to a group temporarily on a specific server and world
-     * @param group The group to add the user to
-     * @param server The server to add the group on
-     * @param world The world to add the group on
+     *
+     * @param group    The group to add the user to
+     * @param server   The server to add the group on
+     * @param world    The world to add the group on
      * @param expireAt when the group should expire
      * @throws ObjectAlreadyHasException if the user is already a member of the group on that server
-     * @throws NullPointerException if the group, server or world is null
-     * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
-     * @throws IllegalArgumentException if the expiry time is in the past or the server/world is invalid
+     * @throws NullPointerException      if the group, server or world is null
+     * @throws IllegalStateException     if the group instance was not obtained from LuckPerms.
+     * @throws IllegalArgumentException  if the expiry time is in the past or the server/world is invalid
      */
     void addGroup(Group group, String server, String world, long expireAt) throws ObjectAlreadyHasException;
 
     /**
      * Remove the user from a group
+     *
      * @param group the group to remove the user from
-     * @throws ObjectLacksException if the user isn't a member of the group
-     * @throws NullPointerException if the group is null
+     * @throws ObjectLacksException  if the user isn't a member of the group
+     * @throws NullPointerException  if the group is null
      * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
      */
     void removeGroup(Group group) throws ObjectLacksException;
 
     /**
      * Remove the user from a group
-     * @param group the group to remove the user from
+     *
+     * @param group     the group to remove the user from
      * @param temporary if the group being removed is temporary
-     * @throws ObjectLacksException if the user isn't a member of the group
-     * @throws NullPointerException if the group is null
+     * @throws ObjectLacksException  if the user isn't a member of the group
+     * @throws NullPointerException  if the group is null
      * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
      */
     void removeGroup(Group group, boolean temporary) throws ObjectLacksException;
 
     /**
      * Remove the user from a group on a specific server
-     * @param group The group to remove the user from
+     *
+     * @param group  The group to remove the user from
      * @param server The server to remove the group on
-     * @throws ObjectLacksException if the user isn't a member of the group
-     * @throws NullPointerException if the group or server is null
-     * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
+     * @throws ObjectLacksException     if the user isn't a member of the group
+     * @throws NullPointerException     if the group or server is null
+     * @throws IllegalStateException    if the group instance was not obtained from LuckPerms.
      * @throws IllegalArgumentException if the server is invalid
      */
     void removeGroup(Group group, String server) throws ObjectLacksException;
 
     /**
      * Remove the user from a group on a specific server and world
-     * @param group The group to remove the user from
+     *
+     * @param group  The group to remove the user from
      * @param server The server to remove the group on
-     * @param world The world to remove the group on
-     * @throws ObjectLacksException if the user isn't a member of the group
-     * @throws NullPointerException if the group, server or world is null
-     * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
+     * @param world  The world to remove the group on
+     * @throws ObjectLacksException     if the user isn't a member of the group
+     * @throws NullPointerException     if the group, server or world is null
+     * @throws IllegalStateException    if the group instance was not obtained from LuckPerms.
      * @throws IllegalArgumentException if the server or world is invalid
      */
     void removeGroup(Group group, String server, String world) throws ObjectLacksException;
 
     /**
      * Remove the user from a group on a specific server
-     * @param group The group to remove the user from
-     * @param server The server to remove the group on
+     *
+     * @param group     The group to remove the user from
+     * @param server    The server to remove the group on
      * @param temporary if the group being removed is temporary
-     * @throws ObjectLacksException if the user isn't a member of the group
-     * @throws NullPointerException if the group or server is null
-     * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
+     * @throws ObjectLacksException     if the user isn't a member of the group
+     * @throws NullPointerException     if the group or server is null
+     * @throws IllegalStateException    if the group instance was not obtained from LuckPerms.
      * @throws IllegalArgumentException if the expiry time is in the past or the server is invalid
      */
     void removeGroup(Group group, String server, boolean temporary) throws ObjectLacksException;
 
     /**
      * Remove the user from a group on a specific server and world
-     * @param group The group to remove the user from
-     * @param server The server to remove the group on
-     * @param world The world to remove the group on
+     *
+     * @param group     The group to remove the user from
+     * @param server    The server to remove the group on
+     * @param world     The world to remove the group on
      * @param temporary if the group being removed is temporary
-     * @throws ObjectLacksException if the user isn't a member of the group
-     * @throws NullPointerException if the group, server or world is null
-     * @throws IllegalStateException if the group instance was not obtained from LuckPerms.
+     * @throws ObjectLacksException     if the user isn't a member of the group
+     * @throws NullPointerException     if the group, server or world is null
+     * @throws IllegalStateException    if the group instance was not obtained from LuckPerms.
      * @throws IllegalArgumentException if the expiry time is in the past or the server/world is invalid
      */
     void removeGroup(Group group, String server, String world, boolean temporary) throws ObjectLacksException;
 
-    /**
-     * Clear all of the users permission nodes
-     */
-    void clearNodes();
-
     /**
      * Get a {@link List} of all of the groups the user is a member of, on all servers
+     *
      * @return a {@link List} of group names
      */
     List<String> getGroupNames();
 
     /**
      * Get a {@link List} of the groups the user is a member of on a specific server
+     *
      * @param server the server to check
-     * @param world the world to check
+     * @param world  the world to check
      * @return a {@link List} of group names
-     * @throws NullPointerException if the server or world is null
+     * @throws NullPointerException     if the server or world is null
      * @throws IllegalArgumentException if the server or world is invalid
      */
     List<String> getLocalGroups(String server, String world);
 
     /**
      * Get a {@link List} of the groups the user is a member of on a specific server
+     *
      * @param server the server to check
      * @return a {@link List} of group names
-     * @throws NullPointerException if the server is null
+     * @throws NullPointerException     if the server is null
      * @throws IllegalArgumentException if the server is invalid
      */
     List<String> getLocalGroups(String server);

api/src/main/java/me/lucko/luckperms/api/UuidCache.java

@@ -27,21 +27,21 @@ import java.util.UUID;
 /**
  * A UUID cache for online users, between external Mojang UUIDs, and internal LuckPerms UUIDs.
  *
- * <p> This UuidCache is a means of allowing users to have the same internal UUID across a network of offline mode servers
- * or mixed offline mode and online mode servers. Platforms running in offline mode generate a random UUID for a user when
- * they first join the server, but this UUID will then not be consistent across the network. LuckPerms will instead check
- * the datastore cache, to get a UUID for a user that is consistent across an entire network.
+ * <p> This UuidCache is a means of allowing users to have the same internal UUID across a network of offline mode
+ * servers or mixed offline mode and online mode servers. Platforms running in offline mode generate a UUID for a
+ * user when they first join the server, but this UUID will then not be consistent across the network. LuckPerms will
+ * instead check the datastore cache, to get a UUID for a user that is consistent across an entire network.
  *
- * <p> If you want to get a user object from the datastore using the api on a server in offline mode, you will need to use this cache,
- * OR use Datastore#getUUID, for users that are not online.
+ * <p> If you want to get a user object from the Storage using the api on a server in offline mode, you will need to use
+ * this cache, OR use Storage#getUUID, for users that are not online.
  *
- * <p> WARNING: THIS IS ONLY EFFECTIVE FOR ONLINE PLAYERS. USE THE DATASTORE METHODS FOR OFFLINE PLAYERS.
+ * <p> THIS IS ONLY EFFECTIVE FOR ONLINE PLAYERS. USE THE DATASTORE METHODS FOR OFFLINE PLAYERS.
  */
-@SuppressWarnings("unused")
 public interface UuidCache {
 
     /**
      * Gets a users internal "LuckPerms" UUID, from the one given by the server.
+     *
      * @param external the UUID assigned by the server, through Player#getUniqueId or ProxiedPlayer#getUniqueId
      * @return the corresponding internal UUID
      */
@@ -49,6 +49,7 @@ public interface UuidCache {
 
     /**
      * Gets a users external, server assigned or Mojang assigned unique id, from the internal one used within LuckPerms.
+     *
      * @param internal the UUID used within LuckPerms, through User#getUuid
      * @return the corresponding external UUID
      */

api/src/main/java/me/lucko/luckperms/api/caching/MetaData.java

@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.api.caching;
+
+import java.util.Map;
+import java.util.SortedMap;
+
+/**
+ * Holds cached Meta lookup data for a specific set of contexts
+ *
+ * @since 2.13
+ */
+public interface MetaData {
+
+    /**
+     * Gets an immutable copy of the meta this user has
+     *
+     * @return an immutable map of meta
+     */
+    Map<String, String> getMeta();
+
+    /**
+     * Gets an immutable sorted map of all of the prefixes the user has, whereby the first value is the highest priority
+     * prefix.
+     *
+     * @return a sorted map of prefixes
+     */
+    SortedMap<Integer, String> getPrefixes();
+
+    /**
+     * Gets an immutable sorted map of all of the suffixes the user has, whereby the first value is the highest priority
+     * suffix.
+     *
+     * @return a sorted map of suffixes
+     */
+    SortedMap<Integer, String> getSuffixes();
+
+    /**
+     * Gets the user's highest priority prefix, or null if the user has no prefixes
+     *
+     * @return a prefix string, or null
+     */
+    String getPrefix();
+
+    /**
+     * Gets the user's highest priority suffix, or null if the user has no suffixes
+     *
+     * @return a suffix string, or null
+     */
+    String getSuffix();
+
+}

api/src/main/java/me/lucko/luckperms/api/caching/PermissionData.java

@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.api.caching;
+
+import me.lucko.luckperms.api.Tristate;
+
+import java.util.Map;
+
+/**
+ * Holds cached Permission lookup data for a specific set of contexts
+ *
+ * @since 2.13
+ */
+public interface PermissionData {
+
+    /**
+     * Gets a permission value for the given permission node
+     *
+     * @param permission the permission node
+     * @return a tristate result
+     * @throws NullPointerException if permission is null
+     */
+    Tristate getPermissionValue(String permission);
+
+    /**
+     * Invalidates the underlying permission calculator cache.
+     *
+     * <p> Can be called to allow for an update in defaults.
+     */
+    void invalidateCache();
+
+    /**
+     * Gets an immutable copy of the permission map backing the permission calculator
+     *
+     * @return an immutable set of permissions
+     */
+    Map<String, Boolean> getImmutableBacking();
+
+}

api/src/main/java/me/lucko/luckperms/api/caching/UserData.java

@@ -0,0 +1,135 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.api.caching;
+
+import me.lucko.luckperms.api.Contexts;
+
+import java.util.Set;
+
+/**
+ * Holds cached permission and meta lookup data for a {@link me.lucko.luckperms.api.User}.
+ *
+ * <p>Data is only likely to be available for online users. All calls will account for inheritance, as well as any
+ * default data provided by the platform. This calls are heavily cached and are therefore fast.
+ *
+ * @since 2.13
+ */
+public interface UserData {
+
+    /**
+     * Gets PermissionData from the cache, given a specified context.
+     *
+     * <p> If the data is not cached, it is calculated. Therefore, this call could be costly.
+     *
+     * @param contexts the contexts to get the permission data in
+     * @return a permission data instance
+     * @throws NullPointerException if contexts is null
+     */
+    PermissionData getPermissionData(Contexts contexts);
+
+    /**
+     * Gets MetaData from the cache, given a specified context.
+     *
+     * <p> If the data is not cached, it is calculated. Therefore, this call could be costly.
+     *
+     * @param contexts the contexts to get the permission data in
+     * @return a meta data instance
+     * @throws NullPointerException if contexts is null
+     */
+    MetaData getMetaData(Contexts contexts);
+
+    /**
+     * Calculates permission data, bypassing the cache.
+     *
+     * @param contexts the contexts to get permission data in
+     * @return a permission data instance
+     * @throws NullPointerException if contexts is null
+     */
+    PermissionData calculatePermissions(Contexts contexts);
+
+    /**
+     * Calculates meta data, bypassing the cache.
+     *
+     * @param contexts the contexts to get meta data in
+     * @return a meta data instance
+     * @throws NullPointerException if contexts is null
+     */
+    MetaData calculateMeta(Contexts contexts);
+
+    /**
+     * Calculates permission data and stores it in the cache.
+     *
+     * <p> If there is already data cached for the given contexts, and if the resultant output is different,
+     * the cached value is updated.
+     *
+     * @param contexts the contexts to recalculate in.
+     * @throws NullPointerException if contexts is null
+     */
+    void recalculatePermissions(Contexts contexts);
+
+    /**
+     * Calculates meta data and stores it in the cache.
+     *
+     * <p> If there is already data cached for the given contexts, and if the resultant output is different,
+     * the cached value is updated.
+     *
+     * @param contexts the contexts to recalculate in.
+     * @throws NullPointerException if contexts is null
+     */
+    void recalculateMeta(Contexts contexts);
+
+    /**
+     * Calls {@link #recalculatePermissions(Contexts)} for all current loaded contexts
+     */
+    void recalculatePermissions();
+
+    /**
+     * Calls {@link #recalculateMeta(Contexts)} for all current loaded contexts
+     */
+    void recalculateMeta();
+
+    /**
+     * Calls {@link #preCalculate(Contexts)} for the given contexts
+     *
+     * @param contexts a set of contexts
+     * @throws NullPointerException if contexts is null
+     */
+    void preCalculate(Set<Contexts> contexts);
+
+    /**
+     * Ensures that PermissionData and MetaData is cached for a context.
+     *
+     * <p> If the cache does not contain any data for the context, it will be calculated and saved.
+     *
+     * @param contexts the contexts to pre-calculate for
+     * @throws NullPointerException if contexts is null
+     */
+    void preCalculate(Contexts contexts);
+
+    /**
+     * Invalidates all of the underlying Permission calculators.
+     * Can be called to allow for an update in defaults.
+     */
+    void invalidatePermissionCalculators();
+
+}

api/src/main/java/me/lucko/luckperms/api/context/ContextCalculator.java

@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.api.context;
+
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.CopyOnWriteArrayList;
+
+/**
+ * A simple implementation of the listener aspects of {@link IContextCalculator}
+ *
+ * @param <T> the subject type
+ */
+public abstract class ContextCalculator<T> implements IContextCalculator<T> {
+    private final List<ContextListener<T>> listeners = new CopyOnWriteArrayList<>();
+
+    /**
+     * Pushes an update to all registered {@link ContextListener}s.
+     * Make sure any changes are applied internally before this method is called.
+     *
+     * @param subject the subject that changed
+     * @param before  the context state before the change
+     * @param current the context state after the change (now)
+     * @throws NullPointerException if any parameters are null
+     */
+    protected void pushUpdate(T subject, Map.Entry<String, String> before, Map.Entry<String, String> current) {
+        if (subject == null) {
+            throw new NullPointerException("subject");
+        }
+        if (before == null) {
+            throw new NullPointerException("before");
+        }
+        if (current == null) {
+            throw new NullPointerException("current");
+        }
+
+        for (ContextListener<T> listener : listeners) {
+            try {
+                listener.onContextChange(subject, before, current);
+            } catch (Exception e) {
+                System.out.println("Exception whilst passing context change to listener: " + listener);
+                e.printStackTrace();
+            }
+        }
+    }
+
+    @Override
+    public void addListener(ContextListener<T> listener) {
+        if (listener == null) {
+            throw new NullPointerException("listener");
+        }
+
+        listeners.add(listener);
+    }
+
+}

api/src/main/java/me/lucko/luckperms/api/context/ContextListener.java

@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.api.context;
+
+import java.util.Map;
+
+/**
+ * Listens to context changes
+ *
+ * @param <T> the subject type, Is ALWAYS the player class of the platform.
+ */
+public interface ContextListener<T> {
+
+    /**
+     * Called whenever a context changes on the
+     *
+     * @param subject the subject that had context changed
+     * @param before  the context state before the change
+     * @param current the context state after the change (now)
+     */
+    void onContextChange(T subject, Map.Entry<String, String> before, Map.Entry<String, String> current) throws Exception;
+
+}

api/src/main/java/me/lucko/luckperms/api/context/ContextSet.java

@@ -0,0 +1,204 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.api.context;
+
+import com.google.common.collect.Multimap;
+
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * Holds contexts.
+ * Implementations may be either mutable or immutable.
+ *
+ * @since 2.13
+ */
+public interface ContextSet {
+
+    /**
+     * Make a singleton ImmutableContextSet from a context pair
+     *
+     * @param key   the key
+     * @param value the value
+     * @return a new ImmutableContextSet containing one KV pair
+     * @throws NullPointerException if key or value is null
+     */
+    static ImmutableContextSet singleton(String key, String value) {
+        return ImmutableContextSet.singleton(key, value);
+    }
+
+    /**
+     * Creates a ImmutableContextSet from an existing map
+     *
+     * @param map the map to copy from
+     * @return a new ImmutableContextSet representing the pairs from the map
+     * @throws NullPointerException if the map is null
+     */
+    static ImmutableContextSet fromMap(Map<String, String> map) {
+        return ImmutableContextSet.fromMap(map);
+    }
+
+    /**
+     * Creates a ImmutableContextSet from an existing iterable of Map Entries
+     *
+     * @param iterable the iterable to copy from
+     * @return a new ImmutableContextSet representing the pairs in the iterable
+     * @throws NullPointerException if the iterable is null
+     */
+    static ImmutableContextSet fromEntries(Iterable<? extends Map.Entry<String, String>> iterable) {
+        return ImmutableContextSet.fromEntries(iterable);
+    }
+
+    /**
+     * Creates a ImmutableContextSet from an existing multimap
+     *
+     * @param multimap the multimap to copy from
+     * @return a new ImmutableContextSet representing the pairs in the multimap
+     * @throws NullPointerException if the multimap is null
+     * @since 2.16
+     */
+    static ImmutableContextSet fromMultimap(Multimap<String, String> multimap) {
+        return ImmutableContextSet.fromMultimap(multimap);
+    }
+
+    /**
+     * Creates a new ImmutableContextSet from an existing set.
+     * Only really useful for converting between mutable and immutable types.
+     *
+     * @param contextSet the context set to copy from
+     * @return a new ImmutableContextSet with the same content and the one provided
+     * @throws NullPointerException if contextSet is null
+     */
+    static ImmutableContextSet fromSet(ContextSet contextSet) {
+        return ImmutableContextSet.fromSet(contextSet);
+    }
+
+    /**
+     * Creates a new empty ImmutableContextSet.
+     *
+     * @return a new ImmutableContextSet
+     */
+    static ImmutableContextSet empty() {
+        return ImmutableContextSet.empty();
+    }
+
+    /**
+     * Check to see if this set is in an immutable form
+     *
+     * @return true if the set is immutable
+     */
+    boolean isImmutable();
+
+    /**
+     * If the set is mutable, this method will return an immutable copy. Otherwise just returns itself.
+     *
+     * @return an immutable ContextSet
+     */
+    ImmutableContextSet makeImmutable();
+
+    /**
+     * Creates a mutable copy of this set.
+     *
+     * @return a mutable ContextSet
+     * @since 2.16
+     */
+    MutableContextSet mutableCopy();
+
+    /**
+     * Converts this ContextSet to an immutable {@link Set} of {@link Map.Entry}s.
+     *
+     * @return an immutable set
+     */
+    Set<Map.Entry<String, String>> toSet();
+
+    /**
+     * Converts this ContextSet to an immutable {@link Map}
+     *
+     * <b>NOTE: Use of this method may result in data being lost. ContextSets can contain lots of different values for
+     * one key.</b>
+     *
+     * @return an immutable map
+     */
+    Map<String, String> toMap();
+
+    /**
+     * Converts this ContextSet to an immutable {@link Multimap}
+     *
+     * @return a multimap
+     * @since 2.16
+     */
+    Multimap<String, String> toMultimap();
+
+    /**
+     * Check if the set contains at least one value for the given key.
+     *
+     * @param key the key to check for
+     * @return true if the set contains a value for the key
+     * @throws NullPointerException if the key is null
+     */
+    boolean containsKey(String key);
+
+    /**
+     * Gets a set of all of the values mapped to the given key
+     *
+     * @param key the key to find values for
+     * @return a set of values
+     * @throws NullPointerException if the key is null
+     */
+    Set<String> getValues(String key);
+
+    /**
+     * Check if thr set contains a given key mapped to a given value
+     *
+     * @param key   the key to look for
+     * @param value the value to look for (case sensitive)
+     * @return true if the set contains the KV pair
+     * @throws NullPointerException if the key or value is null
+     */
+    boolean has(String key, String value);
+
+    /**
+     * Same as {@link #has(String, String)}, except ignores the case of the value.
+     *
+     * @param key   the key to look for
+     * @param value the value to look for
+     * @return true if the set contains the KV pair
+     * @throws NullPointerException if the key or value is null
+     */
+    boolean hasIgnoreCase(String key, String value);
+
+    /**
+     * Check if the set is empty
+     *
+     * @return true if the set is empty
+     */
+    boolean isEmpty();
+
+    /**
+     * Gets the number of key-value context pairs in the set
+     *
+     * @return the size of the set
+     */
+    int size();
+
+}

api/src/main/java/me/lucko/luckperms/api/context/IContextCalculator.java

@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.api.context;
+
+import java.util.Map;
+
+/**
+ * Calculates whether contexts are applicable to {@link T}
+ *
+ * <p>Somewhat inspired by the system used on Sponge.
+ *
+ * @param <T> the subject type. Is ALWAYS the player class of the platform.
+ */
+public interface IContextCalculator<T> {
+
+    /**
+     * Gives the subject all of the applicable contexts they meet
+     *
+     * @param subject     the subject to add contexts to
+     * @param accumulator a map of contexts to add to
+     * @return the map
+     * @since 2.13
+     */
+    MutableContextSet giveApplicableContext(T subject, MutableContextSet accumulator);
+
+    /**
+     * Checks to see if a context is applicable to a subject
+     *
+     * @param subject the subject to check against
+     * @param context the context to check for
+     * @return true if met, or false if not. If this calculator does not calculate the given context, return false.
+     */
+    boolean isContextApplicable(T subject, Map.Entry<String, String> context);
+
+    /**
+     * Adds a listener to be called whenever a context handled by this calculator changes
+     *
+     * @param listener the listener instance
+     * @throws NullPointerException if listener is null
+     */
+    void addListener(ContextListener<T> listener);
+
+}

api/src/main/java/me/lucko/luckperms/api/context/ImmutableContextSet.java

@@ -0,0 +1,257 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.api.context;
+
+import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.ImmutableMultimap;
+import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.Multimap;
+
+import java.util.Collection;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * An immutable implementation of {@link ContextSet}.
+ *
+ * @since 2.16
+ */
+public final class ImmutableContextSet implements ContextSet {
+    private static final ImmutableContextSet EMPTY = new ImmutableContextSet(ImmutableMultimap.of());
+
+    /**
+     * Make a singleton ImmutableContextSet from a context pair
+     *
+     * @param key   the key
+     * @param value the value
+     * @return a new ImmutableContextSet containing one KV pair
+     * @throws NullPointerException if key or value is null
+     */
+    public static ImmutableContextSet singleton(String key, String value) {
+        if (key == null) {
+            throw new NullPointerException("key");
+        }
+        if (value == null) {
+            throw new NullPointerException("value");
+        }
+
+        return new ImmutableContextSet(ImmutableMultimap.of(key.toLowerCase(), value));
+    }
+
+    /**
+     * Creates a ImmutableContextSet from an existing map
+     *
+     * @param map the map to copy from
+     * @return a new ImmutableContextSet representing the pairs from the map
+     * @throws NullPointerException if the map is null
+     */
+    public static ImmutableContextSet fromMap(Map<String, String> map) {
+        if (map == null) {
+            throw new NullPointerException("map");
+        }
+
+        ImmutableMultimap.Builder<String, String> b = ImmutableMultimap.builder();
+        for (Map.Entry<String, String> e : map.entrySet()) {
+            b.put(e.getKey(), e.getValue());
+        }
+
+        return new ImmutableContextSet(b.build());
+    }
+
+    /**
+     * Creates a ImmutableContextSet from an existing iterable of Map Entries
+     *
+     * @param iterable the iterable to copy from
+     * @return a new ImmutableContextSet representing the pairs in the iterable
+     * @throws NullPointerException if the iterable is null
+     */
+    public static ImmutableContextSet fromEntries(Iterable<? extends Map.Entry<String, String>> iterable) {
+        if (iterable == null) {
+            throw new NullPointerException("iterable");
+        }
+
+        return MutableContextSet.fromEntries(iterable).makeImmutable();
+    }
+
+    /**
+     * Creates a ImmutableContextSet from an existing multimap
+     *
+     * @param multimap the multimap to copy from
+     * @return a new ImmutableContextSet representing the pairs in the multimap
+     * @throws NullPointerException if the multimap is null
+     */
+    public static ImmutableContextSet fromMultimap(Multimap<String, String> multimap) {
+        if (multimap == null) {
+            throw new NullPointerException("multimap");
+        }
+
+        return MutableContextSet.fromMultimap(multimap).makeImmutable();
+    }
+
+    /**
+     * Creates a new ImmutableContextSet from an existing set.
+     * Only really useful for converting between mutable and immutable types.
+     *
+     * @param contextSet the context set to copy from
+     * @return a new ImmutableContextSet with the same content and the one provided
+     * @throws NullPointerException if contextSet is null
+     */
+    public static ImmutableContextSet fromSet(ContextSet contextSet) {
+        return contextSet.makeImmutable();
+    }
+
+    /**
+     * Creates a new empty ContextSet.
+     *
+     * @return a new ContextSet
+     */
+    public static ImmutableContextSet empty() {
+        return EMPTY;
+    }
+
+    private final Multimap<String, String> map;
+
+    ImmutableContextSet(Multimap<String, String> contexts) {
+        this.map = ImmutableMultimap.copyOf(contexts);
+    }
+
+    @Override
+    public boolean isImmutable() {
+        return true;
+    }
+
+    @Override
+    @Deprecated // This set is already immutable!
+    public ImmutableContextSet makeImmutable() {
+        return this;
+    }
+
+    @Override
+    public MutableContextSet mutableCopy() {
+        return MutableContextSet.fromSet(this);
+    }
+
+    @Override
+    public Set<Map.Entry<String, String>> toSet() {
+        return ImmutableSet.copyOf(map.entries());
+    }
+
+    @Override
+    public Map<String, String> toMap() {
+        ImmutableMap.Builder<String, String> m = ImmutableMap.builder();
+        for (Map.Entry<String, String> e : map.entries()) {
+            m.put(e.getKey(), e.getValue());
+        }
+
+        return m.build();
+    }
+
+    @Override
+    public Multimap<String, String> toMultimap() {
+        return map;
+    }
+
+    @Override
+    public boolean containsKey(String key) {
+        if (key == null) {
+            throw new NullPointerException("key");
+        }
+
+        return map.containsKey(key);
+    }
+
+    @Override
+    public Set<String> getValues(String key) {
+        if (key == null) {
+            throw new NullPointerException("key");
+        }
+
+        Collection<String> c = map.get(key);
+        return c != null && !c.isEmpty() ? ImmutableSet.copyOf(c) : ImmutableSet.of();
+    }
+
+    @Override
+    public boolean has(String key, String value) {
+        if (key == null) {
+            throw new NullPointerException("key");
+        }
+        if (value == null) {
+            throw new NullPointerException("value");
+        }
+
+        return map.containsEntry(key, value);
+    }
+
+    @Override
+    public boolean hasIgnoreCase(String key, String value) {
+        if (key == null) {
+            throw new NullPointerException("key");
+        }
+        if (value == null) {
+            throw new NullPointerException("value");
+        }
+
+        Collection<String> c = map.get(key);
+        if (c == null || c.isEmpty()) {
+            return false;
+        }
+
+        for (String val : c) {
+            if (val.equalsIgnoreCase(value)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    @Override
+    public boolean isEmpty() {
+        return map.isEmpty();
+    }
+
+    @Override
+    public int size() {
+        return map.size();
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (o == this) return true;
+        if (!(o instanceof ContextSet)) return false;
+        final ContextSet other = (ContextSet) o;
+
+        final Multimap<String, String> thisContexts = this.toMultimap();
+        final Multimap<String, String> otherContexts = other.toMultimap();
+        return thisContexts == null ? otherContexts == null : thisContexts.equals(otherContexts);
+    }
+
+    @Override
+    public int hashCode() {
+        return 59 + (this.map == null ? 43 : this.map.hashCode());
+    }
+
+    @Override
+    public String toString() {
+        return "ImmutableContextSet(contexts=" + this.map + ")";
+    }
+}

api/src/main/java/me/lucko/luckperms/api/context/MutableContextSet.java

@@ -0,0 +1,399 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.api.context;
+
+import com.google.common.collect.HashMultimap;
+import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.Multimap;
+import com.google.common.collect.Multimaps;
+
+import java.util.Collection;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * A mutable implementation of {@link ContextSet}.
+ *
+ * @since 2.16
+ */
+public final class MutableContextSet implements ContextSet {
+
+    /**
+     * Make a singleton MutableContextSet from a context pair
+     *
+     * @param key   the key
+     * @param value the value
+     * @return a new MutableContextSet containing one KV pair
+     * @throws NullPointerException if key or value is null
+     */
+    public static MutableContextSet singleton(String key, String value) {
+        if (key == null) {
+            throw new NullPointerException("key");
+        }
+        if (value == null) {
+            throw new NullPointerException("value");
+        }
+
+        MutableContextSet set = new MutableContextSet();
+        set.add(key, value);
+        return set;
+    }
+
+    /**
+     * Creates a MutableContextSet from an existing map
+     *
+     * @param map the map to copy from
+     * @return a new MutableContextSet representing the pairs from the map
+     * @throws NullPointerException if the map is null
+     */
+    public static MutableContextSet fromMap(Map<String, String> map) {
+        if (map == null) {
+            throw new NullPointerException("map");
+        }
+
+        MutableContextSet set = new MutableContextSet();
+        set.addAll(map);
+        return set;
+    }
+
+    /**
+     * Creates a MutableContextSet from an existing iterable of Map Entries
+     *
+     * @param iterable the iterable to copy from
+     * @return a new MutableContextSet representing the pairs in the iterable
+     * @throws NullPointerException if the iterable is null
+     */
+    public static MutableContextSet fromEntries(Iterable<? extends Map.Entry<String, String>> iterable) {
+        if (iterable == null) {
+            throw new NullPointerException("iterable");
+        }
+
+        MutableContextSet set = new MutableContextSet();
+        set.addAll(iterable);
+        return set;
+    }
+
+    /**
+     * Creates a MutableContextSet from an existing multimap
+     *
+     * @param multimap the multimap to copy from
+     * @return a new MutableContextSet representing the pairs in the multimap
+     * @throws NullPointerException if the multimap is null
+     */
+    public static MutableContextSet fromMultimap(Multimap<String, String> multimap) {
+        if (multimap == null) {
+            throw new NullPointerException("multimap");
+        }
+
+        return fromEntries(multimap.entries());
+    }
+
+    /**
+     * Creates a new MutableContextSet from an existing set.
+     * Only really useful for converting between mutable and immutable types.
+     *
+     * @param contextSet the context set to copy from
+     * @return a new MutableContextSet with the same content and the one provided
+     * @throws NullPointerException if contextSet is null
+     */
+    public static MutableContextSet fromSet(ContextSet contextSet) {
+        if (contextSet == null) {
+            throw new NullPointerException("contextSet");
+        }
+
+        MutableContextSet set = new MutableContextSet();
+        set.addAll(contextSet.toSet());
+        return set;
+    }
+
+    /**
+     * Creates a new empty MutableContextSet.
+     *
+     * @return a new MutableContextSet
+     */
+    public static MutableContextSet create() {
+        return new MutableContextSet();
+    }
+
+    private final Multimap<String, String> map;
+
+    public MutableContextSet() {
+        this.map = Multimaps.synchronizedMultimap(HashMultimap.create());
+    }
+
+    private MutableContextSet(Multimap<String, String> contexts) {
+        this.map = Multimaps.synchronizedMultimap(HashMultimap.create(contexts));
+    }
+
+    @Override
+    public boolean isImmutable() {
+        return false;
+    }
+
+    @Override
+    public ImmutableContextSet makeImmutable() {
+        return new ImmutableContextSet(map);
+    }
+
+    @Override
+    public MutableContextSet mutableCopy() {
+        return new MutableContextSet(map);
+    }
+
+    @Override
+    public Set<Map.Entry<String, String>> toSet() {
+        return ImmutableSet.copyOf(map.entries());
+    }
+
+    @Override
+    public Map<String, String> toMap() {
+        ImmutableMap.Builder<String, String> m = ImmutableMap.builder();
+        for (Map.Entry<String, String> e : map.entries()) {
+            m.put(e.getKey(), e.getValue());
+        }
+
+        return m.build();
+    }
+
+    @Override
+    public Multimap<String, String> toMultimap() {
+        return map;
+    }
+
+    @Override
+    public boolean containsKey(String key) {
+        if (key == null) {
+            throw new NullPointerException("key");
+        }
+
+        return map.containsKey(key);
+    }
+
+    @Override
+    public Set<String> getValues(String key) {
+        if (key == null) {
+            throw new NullPointerException("key");
+        }
+
+        Collection<String> c = map.get(key);
+        return c != null && !c.isEmpty() ? ImmutableSet.copyOf(c) : ImmutableSet.of();
+    }
+
+    @Override
+    public boolean has(String key, String value) {
+        if (key == null) {
+            throw new NullPointerException("key");
+        }
+        if (value == null) {
+            throw new NullPointerException("value");
+        }
+
+        return map.containsEntry(key, value);
+    }
+
+    @Override
+    public boolean hasIgnoreCase(String key, String value) {
+        if (key == null) {
+            throw new NullPointerException("key");
+        }
+        if (value == null) {
+            throw new NullPointerException("value");
+        }
+
+        Collection<String> c = map.get(key);
+        if (c == null || c.isEmpty()) {
+            return false;
+        }
+
+        for (String val : c) {
+            if (val.equalsIgnoreCase(value)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    @Override
+    public boolean isEmpty() {
+        return map.isEmpty();
+    }
+
+    @Override
+    public int size() {
+        return map.size();
+    }
+
+    /**
+     * Adds a new key value pair to the set
+     *
+     * @param key   the key to add
+     * @param value the value to add
+     * @throws NullPointerException if the key or value is null
+     */
+    public void add(String key, String value) {
+        if (key == null) {
+            throw new NullPointerException("key");
+        }
+        if (value == null) {
+            throw new NullPointerException("value");
+        }
+
+        map.put(key.toLowerCase(), value);
+    }
+
+    /**
+     * Adds a new key value pair to the set
+     *
+     * @param entry the entry to add
+     * @throws NullPointerException if the entry is null
+     */
+    public void add(Map.Entry<String, String> entry) {
+        if (entry == null) {
+            throw new NullPointerException("context");
+        }
+
+        map.put(entry.getKey().toLowerCase(), entry.getValue());
+    }
+
+    /**
+     * Adds an iterable containing contexts to the set
+     *
+     * @param iterable an iterable of key value context pairs
+     * @throws NullPointerException if iterable is null
+     */
+    public void addAll(Iterable<? extends Map.Entry<String, String>> iterable) {
+        if (iterable == null) {
+            throw new NullPointerException("contexts");
+        }
+
+        for (Map.Entry<String, String> e : iterable) {
+            this.map.put(e.getKey().toLowerCase(), e.getValue());
+        }
+    }
+
+    /**
+     * Adds the entry set of a map to the set
+     *
+     * @param map the map to add from
+     * @throws NullPointerException if the map is null
+     */
+    public void addAll(Map<String, String> map) {
+        if (map == null) {
+            throw new NullPointerException("contexts");
+        }
+        addAll(map.entrySet());
+    }
+
+    /**
+     * Adds of of the values in another ContextSet to this set
+     *
+     * @param contextSet the set to add from
+     * @throws NullPointerException if the contextSet is null
+     */
+    public void addAll(ContextSet contextSet) {
+        if (contextSet == null) {
+            throw new NullPointerException("contextSet");
+        }
+
+        this.map.putAll(contextSet.toMultimap());
+    }
+
+    /**
+     * Remove a key value pair from this set
+     *
+     * @param key   the key to remove
+     * @param value the value to remove (case sensitive)
+     * @throws NullPointerException if the key or value is null
+     */
+    public void remove(String key, String value) {
+        if (key == null) {
+            throw new NullPointerException("key");
+        }
+        if (value == null) {
+            throw new NullPointerException("value");
+        }
+
+        map.entries().removeIf(entry -> entry.getKey().equalsIgnoreCase(key) && entry.getValue().equals(value));
+    }
+
+    /**
+     * Same as {@link #remove(String, String)}, except ignores the case of the value
+     *
+     * @param key   the key to remove
+     * @param value the value to remove
+     * @throws NullPointerException if the key or value is null
+     */
+    public void removeIgnoreCase(String key, String value) {
+        if (key == null) {
+            throw new NullPointerException("key");
+        }
+        if (value == null) {
+            throw new NullPointerException("value");
+        }
+
+        map.entries().removeIf(e -> e.getKey().equalsIgnoreCase(key) && e.getValue().equalsIgnoreCase(value));
+    }
+
+    /**
+     * Removes all pairs with the given key
+     *
+     * @param key the key to remove
+     * @throws NullPointerException if the key is null
+     */
+    public void removeAll(String key) {
+        if (key == null) {
+            throw new NullPointerException("key");
+        }
+
+        map.removeAll(key.toLowerCase());
+    }
+
+    /**
+     * Clears the set
+     */
+    public void clear() {
+        map.clear();
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (o == this) return true;
+        if (!(o instanceof ContextSet)) return false;
+        final ContextSet other = (ContextSet) o;
+
+        final Multimap<String, String> thisContexts = this.toMultimap();
+        final Multimap<String, String> otherContexts = other.toMultimap();
+        return thisContexts == null ? otherContexts == null : thisContexts.equals(otherContexts);
+    }
+
+    @Override
+    public int hashCode() {
+        return 59 + (this.map == null ? 43 : this.map.hashCode());
+    }
+
+    @Override
+    public String toString() {
+        return "MutableContextSet(contexts=" + this.map + ")";
+    }
+}

api/src/main/java/me/lucko/luckperms/api/data/Callback.java

@@ -27,18 +27,16 @@ import java.util.function.Consumer;
 /**
  * A callback used to wait for the completion of asynchronous operations.
  * All callbacks are ran on the main server thread.
+ *
  * @param <T> the return type
+ * @deprecated in favour of {@link Consumer}
  */
+@Deprecated
 public interface Callback<T> {
 
-    /**
-     * Called when the operation completes.
-     * @param t the return value, may be null
-     */
-    void onComplete(T t);
-
     static <T> Callback<T> empty() {
-        return t -> {};
+        return t -> {
+        };
     }
 
     static <T> Callback<T> of(Runnable runnable) {
@@ -55,4 +53,26 @@ public interface Callback<T> {
         return consumer::accept;
     }
 
+    /**
+     * Helper method for converting old {@link Callback}s to use the new {@link me.lucko.luckperms.api.Storage}
+     * interface.
+     *
+     * @param callback the callback to convert
+     * @param <T>      the return type
+     * @return a consumer instance
+     * @since 2.14
+     * @deprecated in favour of just using {@link Consumer}s.
+     */
+    @Deprecated
+    static <T> Consumer<T> convertToConsumer(Callback<T> callback) {
+        return callback::onComplete;
+    }
+
+    /**
+     * Called when the operation completes.
+     *
+     * @param t the return value, may be null
+     */
+    void onComplete(T t);
+
 }

api/src/main/java/me/lucko/luckperms/api/data/DatastoreConfiguration.java

@@ -30,8 +30,11 @@ package me.lucko.luckperms.api.data;
 public interface DatastoreConfiguration extends MySQLConfiguration {
 
     String getAddress();
+
     String getDatabase();
+
     String getUsername();
+
     String getPassword();
 
 }

api/src/main/java/me/lucko/luckperms/api/data/MySQLConfiguration.java

@@ -29,7 +29,10 @@ package me.lucko.luckperms.api.data;
 public interface MySQLConfiguration {
 
     String getAddress();
+
     String getDatabase();
+
     String getUsername();
+
     String getPassword();
 }

api/src/main/java/me/lucko/luckperms/api/event/LPEvent.java

@@ -29,15 +29,14 @@ import me.lucko.luckperms.api.LuckPermsApi;
  */
 public abstract class LPEvent {
 
-    /**
-     * A link to the API instance provided for convenience.
-     */
-    private LuckPermsApi api = null;
-
     /**
      * A friendly name of the event
      */
     private final String eventName;
+    /**
+     * A link to the API instance provided for convenience.
+     */
+    private LuckPermsApi api = null;
 
     protected LPEvent(String eventName) {
         this.eventName = eventName;

api/src/main/java/me/lucko/luckperms/api/event/TargetedEvent.java

@@ -24,6 +24,7 @@ package me.lucko.luckperms.api.event;
 
 /**
  * Represents an event acting upon a target
+ *
  * @param <T> the target type
  */
 public class TargetedEvent<T> extends LPEvent {

api/src/main/java/me/lucko/luckperms/api/event/events/PermissionExpireEvent.java

@@ -27,6 +27,7 @@ import me.lucko.luckperms.api.event.TargetedEvent;
 
 /**
  * Called when a permission expires for an object.
+ *
  * @deprecated in favour of {@link PermissionNodeExpireEvent}
  */
 @Deprecated

api/src/main/java/me/lucko/luckperms/api/event/events/PermissionNodeExpireEvent.java

@@ -28,6 +28,7 @@ import me.lucko.luckperms.api.event.AbstractPermissionEvent;
 
 /**
  * Called when a temporary permission node expires
+ *
  * @since 2.6
  */
 public class PermissionNodeExpireEvent extends AbstractPermissionEvent {

api/src/main/java/me/lucko/luckperms/api/event/events/PermissionNodeSetEvent.java

@@ -28,6 +28,7 @@ import me.lucko.luckperms.api.event.AbstractPermissionEvent;
 
 /**
  * Called when a permission node is set on a holder
+ *
  * @since 2.6
  */
 public class PermissionNodeSetEvent extends AbstractPermissionEvent {

api/src/main/java/me/lucko/luckperms/api/event/events/PermissionNodeUnsetEvent.java

@@ -28,6 +28,7 @@ import me.lucko.luckperms.api.event.AbstractPermissionEvent;
 
 /**
  * Called when a permission node is unset from a holder
+ *
  * @since 2.6
  */
 public class PermissionNodeUnsetEvent extends AbstractPermissionEvent {

api/src/main/java/me/lucko/luckperms/api/event/events/PermissionSetEvent.java

@@ -30,6 +30,7 @@ import java.util.Map;
 
 /**
  * Called whenever a user or group has a permission set.
+ *
  * @deprecated in favour of {@link PermissionNodeSetEvent}
  */
 @Deprecated

api/src/main/java/me/lucko/luckperms/api/event/events/PermissionUnsetEvent.java

@@ -27,6 +27,7 @@ import me.lucko.luckperms.api.event.AbstractPermissionRemoveEvent;
 
 /**
  * Called whenever a user or group has a permission unset.
+ *
  * @deprecated in favour of {@link PermissionNodeUnsetEvent}
  */
 @Deprecated

api/src/main/java/me/lucko/luckperms/api/event/events/UserFirstLoginEvent.java

@@ -27,11 +27,11 @@ import me.lucko.luckperms.api.event.LPEvent;
 import java.util.UUID;
 
 /**
- * Called when the user logs into the network for the first time.
- * Particularly useful for networks with multiple lobbies, who want to welcome a user when they join for the first time.
+ * Called when the user logs into the network for the first time. Particularly useful for networks with multiple
+ * lobbies, who want to welcome a user when they join for the first time.
  *
- * <p>This event is fired before the player has actually joined the game on the async login / auth event.
- * If you want to do something with the user, store the UUID in a set, and then check the set in the PlayerJoinEvent o.e.
+ * <p>This event is fired before the player has actually joined the game on the async login / auth event. If you want to
+ * do something with the user, store the UUID in a set, and then check the set in the PlayerJoinEvent o.e.
  */
 public class UserFirstLoginEvent extends LPEvent {
 

api/src/main/java/me/lucko/luckperms/api/event/events/UserPermissionRefreshEvent.java

@@ -26,8 +26,8 @@ import me.lucko.luckperms.api.User;
 import me.lucko.luckperms.api.event.UserEvent;
 
 /**
- * Called after a user has their permissions refreshed.
- * If you cache user permissions within your own plugin, it's a good idea to update said cache whenever this event is called.
+ * Called after a user has their permissions refreshed. If you cache user permissions within your own plugin, it's a
+ * good idea to update said cache whenever this event is called.
  */
 public class UserPermissionRefreshEvent extends UserEvent {
 

api/src/main/java/me/lucko/luckperms/exceptions/MembershipException.java

@@ -23,7 +23,9 @@
 package me.lucko.luckperms.exceptions;
 
 /**
- * Thrown when a permission holding object doesn't / already has a permission or isn't / is already is a member of a group
+ * Thrown when a permission holding object doesn't / already has a permission or isn't / is already is a member of a
+ * group
+ *
  * @since 2.7
  */
 public abstract class MembershipException extends Exception {

bukkit-legacy/pom.xml

@@ -1,18 +1,18 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xmlns="http://maven.apache.org/POM/4.0.0"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>luckperms</artifactId>
         <groupId>me.lucko.luckperms</groupId>
-        <version>2.9-SNAPSHOT</version>
+        <version>2.17-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
     <artifactId>luckperms-bukkit-legacy</artifactId>
     <build>
         <defaultGoal>clean package</defaultGoal>
-        <finalName>LuckPerms-bukkit-legacy-${release.version}.${git.closest.tag.commit.count}</finalName>
+        <finalName>LuckPerms-Bukkit-Legacy-${release.version}.${git.closest.tag.commit.count}</finalName>
         <resources>
             <resource>
                 <directory>src/main/resources</directory>
@@ -48,24 +48,16 @@
                             </artifactSet>
                             <relocations>
                                 <relocation>
-                                    <pattern>org.slf4j</pattern>
-                                    <shadedPattern>me.lucko.luckperms.lib.slf4j</shadedPattern>
+                                    <pattern>com.google.common</pattern>
+                                    <shadedPattern>me.lucko.luckperms.lib.guava</shadedPattern>
                                 </relocation>
                                 <relocation>
-                                    <pattern>com.zaxxer.hikari</pattern>
-                                    <shadedPattern>me.lucko.luckperms.lib.hikari</shadedPattern>
+                                    <pattern>com.google.gson</pattern>
+                                    <shadedPattern>me.lucko.luckperms.lib.gson</shadedPattern>
                                 </relocation>
                                 <relocation>
-                                    <pattern>com.mongodb</pattern>
-                                    <shadedPattern>me.lucko.luckperms.lib.mongodb</shadedPattern>
-                                </relocation>
-                                <relocation>
-                                    <pattern>org.bson</pattern>
-                                    <shadedPattern>me.lucko.luckperms.lib.bson</shadedPattern>
-                                </relocation>
-                                <relocation>
-                                    <pattern>org.h2</pattern>
-                                    <shadedPattern>me.lucko.luckperms.lib.h2</shadedPattern>
+                                    <pattern>io.github.mkremins.fanciful</pattern>
+                                    <shadedPattern>me.lucko.luckperms.lib.fanciful</shadedPattern>
                                 </relocation>
                             </relocations>
                         </configuration>

bukkit-placeholders/pom.xml

@@ -1,11 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xmlns="http://maven.apache.org/POM/4.0.0"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>luckperms</artifactId>
         <groupId>me.lucko.luckperms</groupId>
-        <version>2.9-SNAPSHOT</version>
+        <version>2.17-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
@@ -30,7 +30,7 @@
         <dependency>
             <groupId>me.lucko.luckperms</groupId>
             <artifactId>luckperms-api</artifactId>
-            <version>2.8</version>
+            <version>${project.version}</version>
             <scope>provided</scope>
         </dependency>
         <!-- BukkitAPI -->

bukkit-placeholders/src/main/java/me/lucko/luckperms/api/placeholders/LuckPermsPlaceholderExpansion.java

@@ -25,17 +25,26 @@ package me.lucko.luckperms.api.placeholders;
 import me.clip.placeholderapi.PlaceholderAPIPlugin;
 import me.clip.placeholderapi.expansion.PlaceholderExpansion;
 import me.clip.placeholderapi.util.TimeUtil;
-import me.lucko.luckperms.api.*;
+import me.lucko.luckperms.api.Contexts;
+import me.lucko.luckperms.api.LuckPermsApi;
+import me.lucko.luckperms.api.Node;
+import me.lucko.luckperms.api.Track;
+import me.lucko.luckperms.api.User;
+import me.lucko.luckperms.api.caching.UserData;
+import me.lucko.luckperms.api.context.MutableContextSet;
+
 import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
 
 import java.util.Optional;
+import java.util.stream.Collectors;
 
 /*
  * PlaceholderAPI Expansion for LuckPerms, implemented using the LuckPerms API.
  *
  * Placeholders:
  * - group_name
+ * - groups
  * - has_permission_<node>
  * - inherits_permission_<node>
  * - in_group_<name>
@@ -52,6 +61,10 @@ public class LuckPermsPlaceholderExpansion extends PlaceholderExpansion {
     private static final String PLUGIN_NAME = "LuckPerms";
     private static final String AUTHOR = "Luck";
 
+    private static String formatBoolean(boolean b) {
+        return b ? PlaceholderAPIPlugin.booleanTrue() : PlaceholderAPIPlugin.booleanFalse();
+    }
+
     private LuckPermsApi api = null;
 
     @Override
@@ -71,7 +84,14 @@ public class LuckPermsPlaceholderExpansion extends PlaceholderExpansion {
 
     @Override
     public String getVersion() {
-        return "2.8";
+        return "2.13";
+    }
+
+    private Contexts makeContexts(Player player) {
+        MutableContextSet contextSet = new MutableContextSet();
+        contextSet.add("server", api.getConfiguration().getVaultServer());
+        contextSet.add("world", player.getWorld().getName());// ignore world?
+        return Contexts.of(contextSet.makeImmutable(), api.getConfiguration().getVaultIncludeGlobal(), true, true, true, true, player.isOp());
     }
 
     @Override
@@ -84,14 +104,24 @@ public class LuckPermsPlaceholderExpansion extends PlaceholderExpansion {
         if (!u.isPresent()) {
             return "";
         }
+        final User user = u.get();
+
+        Optional<UserData> d = user.getUserDataCache();
+        if (!d.isPresent()) {
+            return "";
+        }
+        final UserData data = d.get();
 
         identifier = identifier.toLowerCase();
-        final User user = u.get();
 
         if (identifier.equalsIgnoreCase("group_name")) {
             return user.getPrimaryGroup();
         }
 
+        if (identifier.equalsIgnoreCase("groups")) {
+            return user.getGroupNames().stream().collect(Collectors.joining(", "));
+        }
+
         if (identifier.startsWith("has_permission_") && identifier.length() > "has_permission_".length()) {
             String node = identifier.substring("has_permission_".length());
             return formatBoolean(user.hasPermission(node, true));
@@ -99,7 +129,7 @@ public class LuckPermsPlaceholderExpansion extends PlaceholderExpansion {
 
         if (identifier.startsWith("inherits_permission_") && identifier.length() > "inherits_permission_".length()) {
             String node = identifier.substring("inherits_permission_".length());
-            return formatBoolean(user.inheritsPermission(node, true));
+            return formatBoolean(data.getPermissionData(makeContexts(player)).getPermissionValue(node).asBoolean());
         }
 
         if (identifier.startsWith("in_group_") && identifier.length() > "in_group_".length()) {
@@ -109,7 +139,7 @@ public class LuckPermsPlaceholderExpansion extends PlaceholderExpansion {
 
         if (identifier.startsWith("inherits_group_") && identifier.length() > "inherits_group_".length()) {
             String groupName = identifier.substring("inherits_group_".length());
-            return formatBoolean(user.getLocalGroups("global").contains(groupName));
+            return formatBoolean(data.getPermissionData(makeContexts(player)).getPermissionValue("group." + groupName).asBoolean());
         }
 
         if (identifier.startsWith("on_track_") && identifier.length() > "on_track_".length()) {
@@ -125,7 +155,7 @@ public class LuckPermsPlaceholderExpansion extends PlaceholderExpansion {
             String node = identifier.substring("expiry_time_".length());
             long currentTime = System.currentTimeMillis() / 1000L;
             for (Node n : user.getTemporaryPermissionNodes()) {
-                if (n.getPermission().equalsIgnoreCase(node)) {
+                if (n.toSerializedNode().equalsIgnoreCase(node)) {
                     return TimeUtil.getTime((int) (n.getExpiryUnixTime() - currentTime));
                 }
             }
@@ -146,16 +176,28 @@ public class LuckPermsPlaceholderExpansion extends PlaceholderExpansion {
         }
 
         if (identifier.equalsIgnoreCase("prefix")) {
-            return MetaUtils.getPrefix(user, null, null, true);
+            String prefix = data.calculateMeta(makeContexts(player)).getPrefix();
+            if (prefix == null) {
+                prefix = "";
+            }
+            return prefix;
         }
 
         if (identifier.equalsIgnoreCase("suffix")) {
-            return MetaUtils.getSuffix(user, null, null, true);
+            String suffix = data.calculateMeta(makeContexts(player)).getSuffix();
+            if (suffix == null) {
+                suffix = "";
+            }
+            return suffix;
         }
 
         if (identifier.startsWith("meta_") && identifier.length() > "meta_".length()) {
             String node = identifier.substring("meta_".length());
-            return MetaUtils.getMeta(user, null, null, node, "", true);
+            String meta = data.getMetaData(makeContexts(player)).getMeta().get(node);
+            if (meta == null) {
+                meta = "";
+            }
+            return meta;
         }
 
         return null;
@@ -175,8 +217,4 @@ public class LuckPermsPlaceholderExpansion extends PlaceholderExpansion {
     public String getAuthor() {
         return AUTHOR;
     }
-
-    private static String formatBoolean(boolean b) {
-        return b ? PlaceholderAPIPlugin.booleanTrue() : PlaceholderAPIPlugin.booleanFalse();
-    }
 }

bukkit/pom.xml

@@ -1,11 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xmlns="http://maven.apache.org/POM/4.0.0"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>luckperms</artifactId>
         <groupId>me.lucko.luckperms</groupId>
-        <version>2.9-SNAPSHOT</version>
+        <version>2.17-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
@@ -14,7 +14,7 @@
 
     <build>
         <defaultGoal>clean package</defaultGoal>
-        <finalName>LuckPerms-${release.version}.${git.closest.tag.commit.count}</finalName>
+        <finalName>LuckPerms-Bukkit-${release.version}.${git.closest.tag.commit.count}</finalName>
         <sourceDirectory>${basedir}/src/main/java</sourceDirectory>
         <resources>
             <resource>
@@ -44,31 +44,10 @@
                         </goals>
                         <configuration>
                             <minimizeJar>false</minimizeJar>
-                            <artifactSet>
-                                <excludes>
-                                    <exclude>org.xerial:*</exclude>
-                                </excludes>
-                            </artifactSet>
                             <relocations>
                                 <relocation>
-                                    <pattern>org.slf4j</pattern>
-                                    <shadedPattern>me.lucko.luckperms.lib.slf4j</shadedPattern>
-                                </relocation>
-                                <relocation>
-                                    <pattern>com.zaxxer.hikari</pattern>
-                                    <shadedPattern>me.lucko.luckperms.lib.hikari</shadedPattern>
-                                </relocation>
-                                <relocation>
-                                    <pattern>com.mongodb</pattern>
-                                    <shadedPattern>me.lucko.luckperms.lib.mongodb</shadedPattern>
-                                </relocation>
-                                <relocation>
-                                    <pattern>org.bson</pattern>
-                                    <shadedPattern>me.lucko.luckperms.lib.bson</shadedPattern>
-                                </relocation>
-                                <relocation>
-                                    <pattern>org.h2</pattern>
-                                    <shadedPattern>me.lucko.luckperms.lib.h2</shadedPattern>
+                                    <pattern>io.github.mkremins.fanciful</pattern>
+                                    <shadedPattern>me.lucko.luckperms.lib.fanciful</shadedPattern>
                                 </relocation>
                             </relocations>
                         </configuration>
@@ -96,8 +75,8 @@
     <dependencies>
         <!-- BukkitAPI -->
         <dependency>
-            <groupId>org.bukkit</groupId>
-            <artifactId>bukkit</artifactId>
+            <groupId>org.spigotmc</groupId>
+            <artifactId>spigot-api</artifactId>
             <version>1.8.8-R0.1-SNAPSHOT</version>
             <scope>provided</scope>
         </dependency>
@@ -122,6 +101,13 @@
             <version>${project.version}</version>
             <scope>compile</scope>
         </dependency>
+        <!-- HikariCP - needed as source -->
+        <dependency>
+            <groupId>com.zaxxer</groupId>
+            <artifactId>HikariCP</artifactId>
+            <version>2.5.1</version>
+            <scope>provided</scope>
+        </dependency>
         <!-- Lombok -->
         <dependency>
             <groupId>org.projectlombok</groupId>
@@ -129,5 +115,46 @@
             <version>1.16.10</version>
             <scope>provided</scope>
         </dependency>
+        <!-- **************Migration Plugins************** -->
+        <dependency>
+            <groupId>org.tyrannyofheaven.bukkit</groupId>
+            <artifactId>zPermissions</artifactId>
+            <version>1.3</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>ru.tehkode</groupId>
+            <artifactId>PermissionsEx</artifactId>
+            <version>1.23</version>
+            <scope>provided</scope>
+            <exclusions>
+                <exclusion>
+                    <groupId>org.bukkit</groupId>
+                    <artifactId>bukkit</artifactId>
+                </exclusion>
+                <exclusion>
+                    <groupId>net.gravitydevelopment.updater</groupId>
+                    <artifactId>updater</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+        <dependency>
+            <groupId>com.github.cheesesoftware</groupId>
+            <artifactId>PowerfulPermsAPI</artifactId>
+            <version>1.0.1</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.anjocaido</groupId>
+            <artifactId>GroupManager</artifactId>
+            <version>1.4</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>de.bananaco</groupId>
+            <artifactId>bpermissions-api</artifactId>
+            <version>2.12</version>
+            <scope>provided</scope>
+        </dependency>
     </dependencies>
 </project>

bukkit/src/main/java/me/lucko/luckperms/BukkitListener.java

@@ -1,122 +0,0 @@
-/*
- * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
- *
- *  Permission is hereby granted, free of charge, to any person obtaining a copy
- *  of this software and associated documentation files (the "Software"), to deal
- *  in the Software without restriction, including without limitation the rights
- *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- *  copies of the Software, and to permit persons to whom the Software is
- *  furnished to do so, subject to the following conditions:
- *
- *  The above copyright notice and this permission notice shall be included in all
- *  copies or substantial portions of the Software.
- *
- *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- *  SOFTWARE.
- */
-
-package me.lucko.luckperms;
-
-import me.lucko.luckperms.constants.Message;
-import me.lucko.luckperms.inject.Injector;
-import me.lucko.luckperms.inject.LPPermissible;
-import me.lucko.luckperms.users.BukkitUser;
-import me.lucko.luckperms.users.User;
-import me.lucko.luckperms.utils.AbstractListener;
-import org.bukkit.entity.Player;
-import org.bukkit.event.EventHandler;
-import org.bukkit.event.EventPriority;
-import org.bukkit.event.Listener;
-import org.bukkit.event.player.*;
-
-import java.util.UUID;
-
-class BukkitListener extends AbstractListener implements Listener {
-    private final LPBukkitPlugin plugin;
-
-    BukkitListener(LPBukkitPlugin plugin) {
-        super(plugin);
-        this.plugin = plugin;
-    }
-
-    @EventHandler(priority = EventPriority.LOWEST)
-    public void onPlayerPreLogin(AsyncPlayerPreLoginEvent e) {
-        if (!plugin.getDatastore().isAcceptingLogins()) {
-            // The datastore is disabled, prevent players from joining the server
-            e.disallow(AsyncPlayerPreLoginEvent.Result.KICK_OTHER, Message.LOADING_ERROR.toString());
-            return;
-        }
-
-        onAsyncLogin(e.getUniqueId(), e.getName());
-    }
-
-    @EventHandler(priority = EventPriority.LOWEST)
-    public void onPlayerLogin(PlayerLoginEvent e) {
-        final Player player = e.getPlayer();
-        final User user = plugin.getUserManager().get(plugin.getUuidCache().getUUID(player.getUniqueId()));
-
-        if (user == null) {
-            e.disallow(PlayerLoginEvent.Result.KICK_OTHER, Message.LOADING_ERROR.toString());
-            return;
-        }
-
-        if (user instanceof BukkitUser) {
-            BukkitUser u = (BukkitUser) user;
-
-            try {
-                LPPermissible lpPermissible = new LPPermissible(player, plugin);
-                Injector.inject(player, lpPermissible);
-                u.setLpPermissible(lpPermissible);
-            } catch (Throwable t) {
-                t.printStackTrace();
-            }
-        }
-
-        plugin.doAsync(user::refreshPermissions);
-    }
-
-    @EventHandler(priority = EventPriority.LOWEST)
-    public void onPlayerJoin(PlayerJoinEvent e) {
-        // Refresh permissions again
-        UUID internal = plugin.getUuidCache().getUUID(e.getPlayer().getUniqueId());
-        plugin.getUserManager().getWorldCache().put(internal, e.getPlayer().getWorld().getName());
-        plugin.doAsync(() -> refreshPlayer(internal));
-    }
-
-    @EventHandler(priority = EventPriority.LOWEST)
-    public void onPlayerChangedWorld(PlayerChangedWorldEvent e) {
-        UUID internal = plugin.getUuidCache().getUUID(e.getPlayer().getUniqueId());
-        plugin.getUserManager().getWorldCache().put(internal, e.getPlayer().getWorld().getName());
-        plugin.doAsync(() -> refreshPlayer(internal));
-
-    }
-
-    @EventHandler(priority = EventPriority.LOWEST)
-    public void onPlayerQuit(PlayerQuitEvent e) {
-        plugin.getUserManager().getWorldCache().remove(plugin.getUuidCache().getUUID(e.getPlayer().getUniqueId()));
-        onLeave(e.getPlayer().getUniqueId());
-    }
-
-    @EventHandler
-    public void onPlayerCommand(PlayerCommandPreprocessEvent e) {
-        if (plugin.getConfiguration().getEnableOps()) {
-            return;
-        }
-
-        String s = e.getMessage()
-                .replace("/", "")
-                .replace("bukkit:", "")
-                .replace("spigot:", "")
-                .replace("minecraft:", "");
-
-        if (s.startsWith("op") || s.startsWith("deop")) {
-            e.setCancelled(true);
-            e.getPlayer().sendMessage(Message.OP_DISABLED.toString());
-        }
-    }
-}

bukkit/src/main/java/me/lucko/luckperms/LPBukkitPlugin.java

@@ -1,280 +0,0 @@
-/*
- * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
- *
- *  Permission is hereby granted, free of charge, to any person obtaining a copy
- *  of this software and associated documentation files (the "Software"), to deal
- *  in the Software without restriction, including without limitation the rights
- *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- *  copies of the Software, and to permit persons to whom the Software is
- *  furnished to do so, subject to the following conditions:
- *
- *  The above copyright notice and this permission notice shall be included in all
- *  copies or substantial portions of the Software.
- *
- *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- *  SOFTWARE.
- */
-
-package me.lucko.luckperms;
-
-import lombok.Getter;
-import me.lucko.luckperms.api.Logger;
-import me.lucko.luckperms.api.LuckPermsApi;
-import me.lucko.luckperms.api.PlatformType;
-import me.lucko.luckperms.api.implementation.ApiProvider;
-import me.lucko.luckperms.api.vault.VaultHook;
-import me.lucko.luckperms.commands.ConsecutiveExecutor;
-import me.lucko.luckperms.commands.Sender;
-import me.lucko.luckperms.constants.Message;
-import me.lucko.luckperms.core.LPConfiguration;
-import me.lucko.luckperms.core.UuidCache;
-import me.lucko.luckperms.data.Importer;
-import me.lucko.luckperms.groups.GroupManager;
-import me.lucko.luckperms.runnables.ExpireTemporaryTask;
-import me.lucko.luckperms.runnables.UpdateTask;
-import me.lucko.luckperms.storage.Datastore;
-import me.lucko.luckperms.storage.StorageFactory;
-import me.lucko.luckperms.tracks.TrackManager;
-import me.lucko.luckperms.users.BukkitUserManager;
-import me.lucko.luckperms.utils.LogFactory;
-import org.bukkit.command.PluginCommand;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.Permission;
-import org.bukkit.permissions.PermissionDefault;
-import org.bukkit.plugin.PluginManager;
-import org.bukkit.plugin.ServicePriority;
-import org.bukkit.plugin.java.JavaPlugin;
-
-import java.io.File;
-import java.util.*;
-import java.util.concurrent.ConcurrentHashMap;
-import java.util.stream.Collectors;
-
-@Getter
-public class LPBukkitPlugin extends JavaPlugin implements LuckPermsPlugin {
-    private final Set<UUID> ignoringLogs = ConcurrentHashMap.newKeySet();
-    private LPConfiguration configuration;
-    private BukkitUserManager userManager;
-    private GroupManager groupManager;
-    private TrackManager trackManager;
-    private Datastore datastore;
-    private UuidCache uuidCache;
-    private ApiProvider apiProvider;
-    private Logger log;
-    private Importer importer;
-    private ConsecutiveExecutor consecutiveExecutor;
-
-    @Override
-    public void onEnable() {
-        log = LogFactory.wrap(getLogger());
-
-        getLog().info("Loading configuration...");
-        configuration = new BukkitConfig(this);
-
-        // register events
-        PluginManager pm = getServer().getPluginManager();
-        pm.registerEvents(new BukkitListener(this), this);
-
-        // register commands
-        getLog().info("Registering commands...");
-        BukkitCommand commandManager = new BukkitCommand(this);
-        PluginCommand main = getServer().getPluginCommand("luckperms");
-        main.setExecutor(commandManager);
-        main.setTabCompleter(commandManager);
-        main.setAliases(Arrays.asList("perms", "lp", "permissions", "p", "perm"));
-
-        datastore = StorageFactory.getDatastore(this, "h2");
-
-        getLog().info("Loading internal permission managers...");
-        uuidCache = new UuidCache(getConfiguration().getOnlineMode());
-        userManager = new BukkitUserManager(this);
-        groupManager = new GroupManager(this);
-        trackManager = new TrackManager();
-        importer = new Importer(commandManager);
-        consecutiveExecutor = new ConsecutiveExecutor(commandManager);
-
-        int mins = getConfiguration().getSyncTime();
-        if (mins > 0) {
-            long ticks = mins * 60 * 20;
-            getServer().getScheduler().runTaskTimerAsynchronously(this, new UpdateTask(this), ticks, ticks);
-        }
-
-        getServer().getScheduler().runTaskTimer(this, BukkitSenderFactory.get(), 1L, 1L);
-        getServer().getScheduler().runTaskTimerAsynchronously(this, new ExpireTemporaryTask(this), 60L, 60L);
-        getServer().getScheduler().runTaskTimerAsynchronously(this, consecutiveExecutor, 20L, 20L);
-
-        // Provide vault support
-        getLog().info("Attempting to hook into Vault...");
-        try {
-            if (getServer().getPluginManager().isPluginEnabled("Vault")) {
-                VaultHook.hook(this);
-                getLog().info("Registered Vault permission & chat hook.");
-            } else {
-                getLog().info("Vault not found.");
-            }
-        } catch (Exception e) {
-            getLog().severe("Error occurred whilst hooking into Vault.");
-            e.printStackTrace();
-        }
-
-        getLog().info("Registering API...");
-        apiProvider = new ApiProvider(this);
-        LuckPerms.registerProvider(apiProvider);
-        getServer().getServicesManager().register(LuckPermsApi.class, apiProvider, this, ServicePriority.Normal);
-
-        // Run update task to refresh any online users
-        getLog().info("Scheduling Update Task to refresh any online users.");
-        try {
-            new UpdateTask(this).run();
-        } catch (Exception e) {
-            e.printStackTrace();
-        }
-
-        registerPermissions(getConfiguration().getCommandsAllowOp() ? PermissionDefault.OP : PermissionDefault.FALSE);
-        if (!getConfiguration().getEnableOps()) {
-            getServer().getOperators().forEach(o -> o.setOp(false));
-        }
-
-        getLog().info("Successfully loaded.");
-    }
-
-    @Override
-    public void onDisable() {
-        getLog().info("Closing datastore...");
-        datastore.shutdown();
-
-        getLog().info("Unregistering API...");
-        LuckPerms.unregisterProvider();
-        getServer().getServicesManager().unregisterAll(this);
-    }
-
-    @Override
-    public void doAsync(Runnable r) {
-        getServer().getScheduler().runTaskAsynchronously(this, r);
-    }
-
-    @Override
-    public void doSync(Runnable r) {
-        getServer().getScheduler().runTask(this, r);
-    }
-
-    @Override
-    public String getVersion() {
-        return getDescription().getVersion();
-    }
-
-    @Override
-    public PlatformType getType() {
-        return PlatformType.BUKKIT;
-    }
-
-    @Override
-    public File getMainDir() {
-        return getDataFolder();
-    }
-
-    @Override
-    public Message getPlayerStatus(UUID uuid) {
-        return getServer().getPlayer(getUuidCache().getExternalUUID(uuid)) != null ? Message.PLAYER_ONLINE : Message.PLAYER_OFFLINE;
-    }
-
-    @Override
-    public int getPlayerCount() {
-        return getServer().getOnlinePlayers().size();
-    }
-
-    @Override
-    public List<String> getPlayerList() {
-        return getServer().getOnlinePlayers().stream().map(Player::getName).collect(Collectors.toList());
-    }
-
-    @Override
-    public List<Sender> getNotifyListeners() {
-        return getServer().getOnlinePlayers().stream()
-                .map(p -> BukkitSenderFactory.get().wrap(p, Collections.singleton(me.lucko.luckperms.constants.Permission.LOG_NOTIFY)))
-                .filter(me.lucko.luckperms.constants.Permission.LOG_NOTIFY::isAuthorized)
-                .collect(Collectors.toList());
-    }
-
-    @Override
-    public Sender getConsoleSender() {
-        return BukkitSenderFactory.get().wrap(getServer().getConsoleSender());
-    }
-
-    @Override
-    public List<String> getPossiblePermissions() {
-        final List<String> perms = new ArrayList<>();
-
-        getServer().getPluginManager().getPermissions().forEach(p -> {
-            perms.add(p.getName());
-            p.getChildren().keySet().forEach(perms::add);
-        });
-
-        return perms;
-    }
-
-    @Override
-    public Object getPlugin(String name) {
-        return getServer().getPluginManager().getPlugin(name);
-    }
-
-    @Override
-    public Object getService(Class clazz) {
-        return getServer().getServicesManager().load(clazz);
-    }
-
-    @SuppressWarnings("deprecation")
-    @Override
-    public UUID getUUID(String playerName) {
-        try {
-            return getServer().getOfflinePlayer(playerName).getUniqueId();
-        } catch (Exception e) {
-            return null;
-        }
-    }
-
-    @Override
-    public boolean isPluginLoaded(String name) {
-        return getServer().getPluginManager().isPluginEnabled(name);
-    }
-
-    @Override
-    public void runUpdateTask() {
-        getServer().getScheduler().runTaskAsynchronously(this, new UpdateTask(this));
-    }
-
-    private void registerPermissions(PermissionDefault def) {
-        PluginManager pm = getServer().getPluginManager();
-
-        Map<String, List<String>> wildcards = new HashMap<>();
-        List<String> all = new ArrayList<>();
-        for (me.lucko.luckperms.constants.Permission p : me.lucko.luckperms.constants.Permission.values()) {
-            pm.addPermission(new Permission(p.getNode(), def));
-            if (p.getGroup() != null) {
-                if (!wildcards.containsKey(p.getGroup())) {
-                    wildcards.put(p.getGroup(), new ArrayList<>());
-                }
-                wildcards.get(p.getGroup()).add(p.getTag());
-            }
-
-            all.add(p.getNode());
-        }
-
-        for (Map.Entry<String, List<String>> e : wildcards.entrySet()) {
-            pm.addPermission(new Permission(
-                    "luckperms." + e.getKey() + ".*", def,
-                    e.getValue().stream()
-                            .map(tag -> "luckperms." + e.getKey() + "." + tag)
-                            .collect(Collectors.toMap(s -> s, s -> true))
-                    )
-            );
-        }
-
-        pm.addPermission(new Permission("luckperms.*", def, all.stream().collect(Collectors.toMap(s -> s, s -> true))));
-    }
-}

bukkit/src/main/java/me/lucko/luckperms/api/vault/VaultChatHook.java

@@ -1,337 +0,0 @@
-/*
- * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
- *
- *  Permission is hereby granted, free of charge, to any person obtaining a copy
- *  of this software and associated documentation files (the "Software"), to deal
- *  in the Software without restriction, including without limitation the rights
- *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- *  copies of the Software, and to permit persons to whom the Software is
- *  furnished to do so, subject to the following conditions:
- *
- *  The above copyright notice and this permission notice shall be included in all
- *  copies or substantial portions of the Software.
- *
- *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- *  SOFTWARE.
- */
-
-package me.lucko.luckperms.api.vault;
-
-import lombok.NonNull;
-import lombok.Setter;
-import me.lucko.luckperms.LPBukkitPlugin;
-import me.lucko.luckperms.api.Node;
-import me.lucko.luckperms.core.PermissionHolder;
-import me.lucko.luckperms.exceptions.ObjectAlreadyHasException;
-import me.lucko.luckperms.groups.Group;
-import me.lucko.luckperms.users.User;
-import me.lucko.luckperms.utils.Contexts;
-import net.milkbowl.vault.chat.Chat;
-
-import java.util.Iterator;
-import java.util.Map;
-
-import static me.lucko.luckperms.utils.ArgumentChecker.escapeCharacters;
-import static me.lucko.luckperms.utils.ArgumentChecker.unescapeCharacters;
-
-/**
- * Provides the Vault Chat service through the use of normal permission nodes.
- *
- * Prefixes / Suffixes:
- * Normal inheritance rules apply.
- * Permission Nodes = prefix.priority.value OR suffix.priority.value
- * If a user/group has / inherits multiple prefixes and suffixes, the one with the highest priority is the one that
- * will apply.
- *
- * Meta:
- * Normal inheritance rules DO NOT apply.
- * Permission Nodes = meta.node.value
- *
- * Node that special characters used within LuckPerms are escaped:
- * See {@link me.lucko.luckperms.utils.ArgumentChecker#escapeCharacters(String)}
- *
- * Registered on normal priority so other plugins can override.
- */
-public class VaultChatHook extends Chat {
-
-    @Setter
-    private LPBukkitPlugin plugin;
-    private final VaultPermissionHook perms;
-
-    VaultChatHook(VaultPermissionHook perms) {
-        super(perms);
-        this.perms = perms;
-    }
-
-    public String getName() {
-        return perms.getName();
-    }
-
-    public boolean isEnabled() {
-        return perms.isEnabled();
-    }
-
-    private void saveMeta(PermissionHolder holder, String world, String node, String value) {
-        if (holder == null) return;
-        if (node.equals("")) return;
-        node = escapeCharacters(node);
-        value = escapeCharacters(value);
-
-        Iterator<Node> nodes = holder.getNodes().iterator();
-        while (nodes.hasNext()) {
-            Node n = nodes.next();
-            if (n.isMeta() && n.getMeta().getKey().equals(node)) {
-                nodes.remove();
-            }
-        }
-
-        Node.Builder metaNode = new me.lucko.luckperms.utils.Node.Builder("meta." + node + "." + value).setValue(true);
-        if (!perms.getServer().equalsIgnoreCase("global")) {
-            metaNode.setServer(perms.getServer());
-        }
-        if (world != null && !world.equals("")) {
-            metaNode.setServer(perms.getServer()).setWorld(world);
-        }
-
-        try {
-            holder.setPermission(metaNode.build());
-        } catch (ObjectAlreadyHasException ignored) {}
-        
-        perms.objectSave(holder);
-    }
-
-    private String getMeta(PermissionHolder holder, String world, String node, String defaultValue) {
-        if (holder == null) return defaultValue;
-        if (node.equals("")) return defaultValue;
-        node = escapeCharacters(node);
-
-        for (Node n : holder.getPermissions(true)) {
-            if (!n.getValue()) {
-                continue;
-            }
-
-            if (!n.isMeta()) {
-                continue;
-            }
-
-            if (!n.shouldApplyOnServer(perms.getServer(), perms.isIncludeGlobal(), false)) {
-                continue;
-            }
-
-            if (!n.shouldApplyOnWorld(world, perms.isIncludeGlobal(), false)) {
-                continue;
-            }
-
-            Map.Entry<String, String> meta = n.getMeta();
-            if (meta.getKey().equalsIgnoreCase(node)) {
-                return unescapeCharacters(meta.getValue());
-            }
-        }
-
-        return defaultValue;
-    }
-
-    private void setChatMeta(boolean prefix, PermissionHolder holder, String value, String world) {
-        if (holder == null) return;
-        if (value.equals("")) return;
-
-        Node.Builder node = new me.lucko.luckperms.utils.Node.Builder(prefix ? "prefix" : "suffix" + ".1000." + escapeCharacters(value));
-        node.setValue(true);
-        if (!perms.getServer().equalsIgnoreCase("global")) {
-            node.setServer(perms.getServer());
-        }
-
-        if (world != null && !world.equals("")) {
-            node.setServer(perms.getServer()).setWorld(world);
-        }
-
-        try {
-            holder.setPermission(node.build());
-        } catch (ObjectAlreadyHasException ignored) {}
-
-        perms.objectSave(holder);
-    }
-
-    private String getChatMeta(boolean prefix, PermissionHolder holder, String world) {
-        if (holder == null) return "";
-
-        int priority = Integer.MIN_VALUE;
-        String meta = null;
-
-        for (Node n : holder.getAllNodes(null, Contexts.allowAll())) {
-            if (!n.getValue()) {
-                continue;
-            }
-
-            if (prefix ? !n.isPrefix() : !n.isSuffix()) {
-                continue;
-            }
-
-            if (!n.shouldApplyOnServer(perms.getServer(), perms.isIncludeGlobal(), false)) {
-                continue;
-            }
-
-            if (!n.shouldApplyOnWorld(world, perms.isIncludeGlobal(), false)) {
-                continue;
-            }
-
-            Map.Entry<Integer, String> value = prefix ? n.getPrefix() : n.getSuffix();
-            if (value.getKey() > priority) {
-                meta = value.getValue();
-                priority = value.getKey();
-            }
-        }
-
-        return meta == null ? "" : unescapeCharacters(meta);
-    }
-
-    public String getPlayerPrefix(String world, @NonNull String player) {
-        final User user = plugin.getUserManager().get(player);
-        return getChatMeta(true, user, world);
-    }
-
-    public void setPlayerPrefix(String world, @NonNull String player, @NonNull String prefix) {
-        final User user = plugin.getUserManager().get(player);
-        setChatMeta(true, user, prefix, world);
-    }
-
-    public String getPlayerSuffix(String world, @NonNull String player) {
-        final User user = plugin.getUserManager().get(player);
-        return getChatMeta(false, user, world);
-    }
-
-    public void setPlayerSuffix(String world, @NonNull String player, @NonNull String suffix) {
-        final User user = plugin.getUserManager().get(player);
-        setChatMeta(false, user, suffix, world);
-    }
-
-    public String getGroupPrefix(String world, @NonNull String group) {
-        final Group g = plugin.getGroupManager().get(group);
-        return getChatMeta(false, g, world);
-    }
-
-    public void setGroupPrefix(String world, @NonNull String group, @NonNull String prefix) {
-        final Group g = plugin.getGroupManager().get(group);
-        setChatMeta(true, g, prefix, world);
-    }
-
-    public String getGroupSuffix(String world, @NonNull String group) {
-        final Group g = plugin.getGroupManager().get(group);
-        return getChatMeta(false, g, world);
-    }
-
-    public void setGroupSuffix(String world, @NonNull String group, @NonNull String suffix) {
-        final Group g = plugin.getGroupManager().get(group);
-        setChatMeta(false, g, suffix, world);
-    }
-
-    public int getPlayerInfoInteger(String world, @NonNull String player, @NonNull String node, int defaultValue) {
-        final User user = plugin.getUserManager().get(player);
-        try {
-            return Integer.parseInt(getMeta(user, world, node, String.valueOf(defaultValue)));
-        } catch (NumberFormatException e) {
-            return defaultValue;
-        }
-    }
-
-    public void setPlayerInfoInteger(String world, @NonNull String player, @NonNull String node, int value) {
-        final User user = plugin.getUserManager().get(player);
-        saveMeta(user, world, node, String.valueOf(value));
-    }
-
-    public int getGroupInfoInteger(String world, @NonNull String group, @NonNull String node, int defaultValue) {
-        final Group g = plugin.getGroupManager().get(group);
-        try {
-            return Integer.parseInt(getMeta(g, world, node, String.valueOf(defaultValue)));
-        } catch (NumberFormatException e) {
-            return defaultValue;
-        }
-    }
-
-    public void setGroupInfoInteger(String world, @NonNull String group, @NonNull String node, int value) {
-        final Group g = plugin.getGroupManager().get(group);
-        saveMeta(g, world, node, String.valueOf(value));
-    }
-
-    public double getPlayerInfoDouble(String world, @NonNull String player, @NonNull String node, double defaultValue) {
-        final User user = plugin.getUserManager().get(player);
-        try {
-            return Double.parseDouble(getMeta(user, world, node, String.valueOf(defaultValue)));
-        } catch (NumberFormatException e) {
-            return defaultValue;
-        }
-    }
-
-    public void setPlayerInfoDouble(String world, @NonNull String player, @NonNull String node, double value) {
-        final User user = plugin.getUserManager().get(player);
-        saveMeta(user, world, node, String.valueOf(value));
-    }
-
-    public double getGroupInfoDouble(String world, @NonNull String group, @NonNull String node, double defaultValue) {
-        final Group g = plugin.getGroupManager().get(group);
-        try {
-            return Double.parseDouble(getMeta(g, world, node, String.valueOf(defaultValue)));
-        } catch (NumberFormatException e) {
-            return defaultValue;
-        }
-    }
-
-    public void setGroupInfoDouble(String world, @NonNull String group, @NonNull String node, double value) {
-        final Group g = plugin.getGroupManager().get(group);
-        saveMeta(g, world, node, String.valueOf(value));
-    }
-
-    public boolean getPlayerInfoBoolean(String world, @NonNull String player, @NonNull String node, boolean defaultValue) {
-        final User user = plugin.getUserManager().get(player);
-        String s = getMeta(user, world, node, String.valueOf(defaultValue));
-        if (!s.equalsIgnoreCase("true") && !s.equalsIgnoreCase("false")) {
-            return defaultValue;
-        }
-        return Boolean.parseBoolean(s);
-    }
-
-    public void setPlayerInfoBoolean(String world, @NonNull String player, @NonNull String node, boolean value) {
-        final User user = plugin.getUserManager().get(player);
-        saveMeta(user, world, node, String.valueOf(value));
-    }
-
-    public boolean getGroupInfoBoolean(String world, @NonNull String group, @NonNull String node, boolean defaultValue) {
-        final Group g = plugin.getGroupManager().get(group);
-        String s = getMeta(g, world, node, String.valueOf(defaultValue));
-        if (!s.equalsIgnoreCase("true") && !s.equalsIgnoreCase("false")) {
-            return defaultValue;
-        }
-        return Boolean.parseBoolean(s);
-    }
-
-    public void setGroupInfoBoolean(String world, @NonNull String group, @NonNull String node, boolean value) {
-        final Group g = plugin.getGroupManager().get(group);
-        saveMeta(g, world, node, String.valueOf(value));
-    }
-
-    public String getPlayerInfoString(String world, @NonNull String player, @NonNull String node, String defaultValue) {
-        final User user = plugin.getUserManager().get(player);
-        return getMeta(user, world, node, defaultValue);
-    }
-
-    public void setPlayerInfoString(String world, @NonNull String player, @NonNull String node, String value) {
-        final User user = plugin.getUserManager().get(player);
-        saveMeta(user, world, node, value);
-    }
-
-    public String getGroupInfoString(String world, @NonNull String group, @NonNull String node, String defaultValue) {
-        final Group g = plugin.getGroupManager().get(group);
-        return getMeta(g, world, node, defaultValue);
-    }
-
-    public void setGroupInfoString(String world, @NonNull String group, @NonNull String node, String value) {
-        final Group g = plugin.getGroupManager().get(group);
-        saveMeta(g, world, node, value);
-    }
-
-}

bukkit/src/main/java/me/lucko/luckperms/api/vault/VaultPermissionHook.java

@@ -1,226 +0,0 @@
-/*
- * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
- *
- *  Permission is hereby granted, free of charge, to any person obtaining a copy
- *  of this software and associated documentation files (the "Software"), to deal
- *  in the Software without restriction, including without limitation the rights
- *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- *  copies of the Software, and to permit persons to whom the Software is
- *  furnished to do so, subject to the following conditions:
- *
- *  The above copyright notice and this permission notice shall be included in all
- *  copies or substantial portions of the Software.
- *
- *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- *  SOFTWARE.
- */
-
-package me.lucko.luckperms.api.vault;
-
-import lombok.Getter;
-import lombok.NonNull;
-import lombok.Setter;
-import me.lucko.luckperms.LPBukkitPlugin;
-import me.lucko.luckperms.api.data.Callback;
-import me.lucko.luckperms.core.PermissionHolder;
-import me.lucko.luckperms.exceptions.ObjectAlreadyHasException;
-import me.lucko.luckperms.exceptions.ObjectLacksException;
-import me.lucko.luckperms.groups.Group;
-import me.lucko.luckperms.users.User;
-import net.milkbowl.vault.permission.Permission;
-
-public class VaultPermissionHook extends Permission {
-
-    @Setter
-    private LPBukkitPlugin plugin;
-
-    @Getter
-    @Setter
-    private String server = "global";
-
-    @Getter
-    @Setter
-    private boolean includeGlobal = true;
-
-    @Override
-    public String getName() {
-        return "LuckPerms";
-    }
-
-    @Override
-    public boolean isEnabled() {
-        return plugin.getDatastore().isAcceptingLogins();
-    }
-
-    @Override
-    public boolean hasSuperPermsCompat() {
-        return true;
-    }
-
-    private boolean objectHas(String world, PermissionHolder object, String permission) {
-        if (object == null) return false;
-
-        if (world != null && !world.equals("")) {
-            return object.hasPermission(permission, true, server, world);
-        } else {
-            return object.hasPermission(permission, true, server);
-        }
-    }
-
-    private boolean objectAdd(String world, PermissionHolder object, String permission) {
-        if (object == null) return false;
-
-        try {
-            if (world != null && !world.equals("")) {
-                object.setPermission(permission, true, server, world);
-            } else {
-                object.setPermission(permission, true, server);
-            }
-        } catch (ObjectAlreadyHasException ignored) {}
-
-        objectSave(object);
-        return true;
-    }
-
-    private boolean objectRemove(String world, PermissionHolder object, String permission) {
-        if (object == null) return false;
-
-        try {
-            if (world != null && !world.equals("")) {
-                object.unsetPermission(permission, server, world);
-            } else {
-                object.unsetPermission(permission, server);
-            }
-        } catch (ObjectLacksException ignored) {}
-
-        objectSave(object);
-        return true;
-    }
-
-    void objectSave(PermissionHolder t) {
-        if (t instanceof User) {
-            ((User) t).refreshPermissions();
-            plugin.getDatastore().saveUser(((User) t), Callback.empty());
-        }
-        if (t instanceof Group) {
-            plugin.getDatastore().saveGroup(((Group) t), c -> plugin.runUpdateTask());
-        }
-    }
-
-    @Override
-    public boolean playerHas(String world, @NonNull String player, @NonNull String permission) {
-        return objectHas(world, plugin.getUserManager().get(player), permission);
-    }
-
-    @Override
-    public boolean playerAdd(String world, @NonNull String player, @NonNull String permission) {
-        final User user = plugin.getUserManager().get(player);
-        return objectAdd(world, user, permission);
-    }
-
-    @Override
-    public boolean playerRemove(String world, @NonNull String player, @NonNull String permission) {
-        final User user = plugin.getUserManager().get(player);
-        return objectRemove(world, user, permission);
-    }
-
-    @Override
-    public boolean groupHas(String world, @NonNull String groupName, @NonNull String permission) {
-        final Group group = plugin.getGroupManager().get(groupName);
-        return objectHas(world, group, permission);
-    }
-
-    @Override
-    public boolean groupAdd(String world, @NonNull String groupName, @NonNull String permission) {
-        final Group group = plugin.getGroupManager().get(groupName);
-        return objectAdd(world, group, permission);
-    }
-
-    @Override
-    public boolean groupRemove(String world, @NonNull String groupName, @NonNull String permission) {
-        final Group group = plugin.getGroupManager().get(groupName);
-        return objectRemove(world, group, permission);
-    }
-
-    @Override
-    public boolean playerInGroup(String world, @NonNull String player, @NonNull String group) {
-        final User user = plugin.getUserManager().get(player);
-        if (user == null) return false;
-
-        final Group group1 = plugin.getGroupManager().get(group);
-        if (group1 == null) return false;
-
-        if (world != null && !world.equals("")) {
-            return user.isInGroup(group1, server, world);
-        } else {
-            return user.isInGroup(group1);
-        }
-    }
-
-    @Override
-    public boolean playerAddGroup(String world, @NonNull String player, @NonNull String groupName) {
-        final User user = plugin.getUserManager().get(player);
-        if (user == null) return false;
-
-        final Group group = plugin.getGroupManager().get(groupName);
-        if (group == null) return false;
-
-        try {
-            if (world != null && !world.equals("")) {
-                user.addGroup(group, server, world);
-            } else {
-                user.addGroup(group);
-            }
-        } catch (ObjectAlreadyHasException ignored) {}
-        objectSave(user);
-        return true;
-    }
-
-    @Override
-    public boolean playerRemoveGroup(String world, @NonNull String player, @NonNull String groupName) {
-        final User user = plugin.getUserManager().get(player);
-        if (user == null) return false;
-
-        final Group group = plugin.getGroupManager().get(groupName);
-        if (group == null) return false;
-
-        try {
-            if (world != null && !world.equals("")) {
-                user.removeGroup(group, server, world);
-            } else {
-                user.removeGroup(group);
-            }
-        } catch (ObjectLacksException ignored) {}
-        objectSave(user);
-        return true;
-    }
-
-    @Override
-    public String[] getPlayerGroups(String world, @NonNull String player) {
-        final User user = plugin.getUserManager().get(player);
-        return (user == null) ? new String[0] :
-                world != null && !world.equals("") ? user.getGroups(server, world, includeGlobal).toArray(new String[0]) :
-                        user.getGroupNames().toArray(new String[0]);
-    }
-
-    @Override
-    public String getPrimaryGroup(String world, @NonNull String player) {
-        final User user = plugin.getUserManager().get(player);
-        return (user == null) ? null : user.getPrimaryGroup();
-    }
-
-    @Override
-    public String[] getGroups() {
-        return plugin.getGroupManager().getAll().keySet().toArray(new String[0]);
-    }
-
-    @Override
-    public boolean hasGroupSupport() {
-        return true;
-    }
-}

bukkit/src/main/java/me/lucko/luckperms/bukkit/BukkitCalculatorFactory.java

@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.bukkit;
+
+import lombok.AllArgsConstructor;
+
+import com.google.common.collect.ImmutableList;
+
+import me.lucko.luckperms.api.Contexts;
+import me.lucko.luckperms.bukkit.calculators.AttachmentProcessor;
+import me.lucko.luckperms.bukkit.calculators.ChildProcessor;
+import me.lucko.luckperms.bukkit.calculators.DefaultsProcessor;
+import me.lucko.luckperms.bukkit.inject.Injector;
+import me.lucko.luckperms.bukkit.model.LPPermissible;
+import me.lucko.luckperms.common.calculators.AbstractCalculatorFactory;
+import me.lucko.luckperms.common.calculators.PermissionCalculator;
+import me.lucko.luckperms.common.calculators.PermissionProcessor;
+import me.lucko.luckperms.common.calculators.processors.MapProcessor;
+import me.lucko.luckperms.common.calculators.processors.RegexProcessor;
+import me.lucko.luckperms.common.calculators.processors.WildcardProcessor;
+import me.lucko.luckperms.common.core.model.User;
+
+import java.util.UUID;
+
+@AllArgsConstructor
+public class BukkitCalculatorFactory extends AbstractCalculatorFactory {
+    private final LPBukkitPlugin plugin;
+
+    @Override
+    public PermissionCalculator build(Contexts contexts, User user) {
+        UUID uuid = plugin.getUuidCache().getExternalUUID(user.getUuid());
+
+        ImmutableList.Builder<PermissionProcessor> processors = ImmutableList.builder();
+        processors.add(new MapProcessor());
+        processors.add(new ChildProcessor(plugin.getChildPermissionProvider()));
+        processors.add(new AttachmentProcessor(() -> {
+            LPPermissible permissible = Injector.getPermissible(uuid);
+            return permissible == null ? null : permissible.getAttachmentPermissions();
+        }));
+        if (plugin.getConfiguration().isApplyingWildcards()) {
+            processors.add(new WildcardProcessor());
+        }
+        if (plugin.getConfiguration().isApplyingRegex()) {
+            processors.add(new RegexProcessor());
+        }
+        processors.add(new DefaultsProcessor(contexts.isOp(), plugin.getDefaultsProvider()));
+
+        return registerCalculator(new PermissionCalculator(plugin, user.getName(), processors.build()));
+    }
+}

bukkit/src/main/java/me/lucko/luckperms/bukkit/BukkitCommand.java

@@ -20,14 +20,15 @@
  *  SOFTWARE.
  */
 
-package me.lucko.luckperms;
+package me.lucko.luckperms.bukkit;
 
 import com.google.common.base.Joiner;
 import com.google.common.base.Splitter;
-import me.lucko.luckperms.api.data.Callback;
-import me.lucko.luckperms.commands.CommandManager;
-import me.lucko.luckperms.commands.Util;
-import me.lucko.luckperms.constants.Patterns;
+
+import me.lucko.luckperms.common.commands.CommandManager;
+import me.lucko.luckperms.common.commands.utils.Util;
+import me.lucko.luckperms.common.constants.Patterns;
+
 import org.bukkit.command.Command;
 import org.bukkit.command.CommandExecutor;
 import org.bukkit.command.CommandSender;
@@ -37,24 +38,25 @@ import java.util.Arrays;
 import java.util.List;
 
 class BukkitCommand extends CommandManager implements CommandExecutor, TabExecutor {
-    BukkitCommand(LuckPermsPlugin plugin) {
+    private final LPBukkitPlugin plugin;
+
+    BukkitCommand(LPBukkitPlugin plugin) {
         super(plugin);
+        this.plugin = plugin;
     }
 
     @Override
     public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
         onCommand(
-                BukkitSenderFactory.get().wrap(sender),
+                plugin.getSenderFactory().wrap(sender),
                 label,
-                Util.stripQuotes(Splitter.on(Patterns.COMMAND_SEPARATOR).omitEmptyStrings().splitToList(Joiner.on(' ').join(args))),
-                Callback.empty()
+                Util.stripQuotes(Splitter.on(Patterns.COMMAND_SEPARATOR).omitEmptyStrings().splitToList(Joiner.on(' ').join(args)))
         );
         return true;
     }
 
-
     @Override
     public List<String> onTabComplete(CommandSender sender, Command command, String label, String[] args) {
-        return onTabComplete(BukkitSenderFactory.get().wrap(sender), Arrays.asList(args));
+        return onTabComplete(plugin.getSenderFactory().wrap(sender), Arrays.asList(args));
     }
 }

bukkit/src/main/java/me/lucko/luckperms/bukkit/BukkitConfig.java

@@ -20,16 +20,21 @@
  *  SOFTWARE.
  */
 
-package me.lucko.luckperms;
+package me.lucko.luckperms.bukkit;
 
-import me.lucko.luckperms.core.LPConfiguration;
-import org.bukkit.configuration.InvalidConfigurationException;
+import me.lucko.luckperms.common.config.AbstractConfiguration;
+
+import org.bukkit.configuration.ConfigurationSection;
 import org.bukkit.configuration.file.YamlConfiguration;
 
 import java.io.File;
-import java.io.IOException;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+import java.util.stream.Collectors;
 
-class BukkitConfig extends LPConfiguration<LPBukkitPlugin> {
+class BukkitConfig extends AbstractConfiguration<LPBukkitPlugin> {
     private YamlConfiguration configuration;
 
     BukkitConfig(LPBukkitPlugin plugin) {
@@ -46,18 +51,7 @@ class BukkitConfig extends LPConfiguration<LPBukkitPlugin> {
             getPlugin().saveResource("config.yml", false);
         }
 
-        configuration = new YamlConfiguration();
-
-        try {
-            configuration.load(configFile);
-        } catch (InvalidConfigurationException | IOException e) {
-            e.printStackTrace();
-        }
-    }
-
-    @Override
-    protected void set(String path, Object value) {
-        configuration.set(path, value);
+        configuration = YamlConfiguration.loadConfiguration(configFile);
     }
 
     @Override
@@ -74,4 +68,35 @@ class BukkitConfig extends LPConfiguration<LPBukkitPlugin> {
     protected boolean getBoolean(String path, boolean def) {
         return configuration.getBoolean(path, def);
     }
+
+    @Override
+    protected List<String> getList(String path, List<String> def) {
+        return Optional.ofNullable(configuration.getStringList(path)).orElse(def);
+    }
+
+    @Override
+    protected List<String> getObjectList(String path, List<String> def) {
+        ConfigurationSection section = configuration.getConfigurationSection(path);
+        if (section == null) {
+            return def;
+        }
+
+        return Optional.ofNullable(section.getKeys(false).stream().collect(Collectors.toList())).orElse(def);
+    }
+
+    @SuppressWarnings("unchecked")
+    @Override
+    protected Map<String, String> getMap(String path, Map<String, String> def) {
+        Map<String, String> map = new HashMap<>();
+        ConfigurationSection section = configuration.getConfigurationSection(path);
+        if (section == null) {
+            return def;
+        }
+
+        for (String key : section.getKeys(false)) {
+            map.put(key, section.getString(key));
+        }
+
+        return map;
+    }
 }

bukkit/src/main/java/me/lucko/luckperms/bukkit/BukkitListener.java

@@ -0,0 +1,155 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.bukkit;
+
+import me.lucko.luckperms.bukkit.inject.Injector;
+import me.lucko.luckperms.bukkit.model.LPPermissible;
+import me.lucko.luckperms.common.constants.Message;
+import me.lucko.luckperms.common.core.model.User;
+import me.lucko.luckperms.common.utils.AbstractListener;
+
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.AsyncPlayerPreLoginEvent;
+import org.bukkit.event.player.PlayerCommandPreprocessEvent;
+import org.bukkit.event.player.PlayerLoginEvent;
+import org.bukkit.event.player.PlayerQuitEvent;
+import org.bukkit.event.server.PluginEnableEvent;
+
+import java.util.UUID;
+
+class BukkitListener extends AbstractListener implements Listener {
+    private final LPBukkitPlugin plugin;
+
+    BukkitListener(LPBukkitPlugin plugin) {
+        super(plugin);
+        this.plugin = plugin;
+    }
+
+    @EventHandler(priority = EventPriority.LOW)
+    public void onPlayerPreLogin(AsyncPlayerPreLoginEvent e) {
+        if (!plugin.isStarted() || !plugin.getStorage().isAcceptingLogins()) {
+
+            // The datastore is disabled, prevent players from joining the server
+            e.disallow(AsyncPlayerPreLoginEvent.Result.KICK_OTHER, Message.LOADING_ERROR.toString());
+            return;
+        }
+
+        // Process login
+        onAsyncLogin(e.getUniqueId(), e.getName());
+    }
+
+    @EventHandler(priority = EventPriority.MONITOR)
+    public void onPlayerPreLoginMonitor(AsyncPlayerPreLoginEvent e) {
+        if (plugin.isStarted() && plugin.getStorage().isAcceptingLogins() && e.getLoginResult() != AsyncPlayerPreLoginEvent.Result.ALLOWED) {
+
+            // Login event was cancelled by another plugin
+            onLeave(e.getUniqueId());
+        }
+    }
+
+    @EventHandler(priority = EventPriority.LOWEST)
+    public void onPlayerLogin(PlayerLoginEvent e) {
+        final Player player = e.getPlayer();
+        final User user = plugin.getUserManager().get(plugin.getUuidCache().getUUID(player.getUniqueId()));
+
+        if (user == null) {
+            // User wasn't loaded for whatever reason.
+            e.disallow(PlayerLoginEvent.Result.KICK_OTHER, Message.LOADING_ERROR.toString());
+            return;
+        }
+
+        try {
+            // Make a new permissible for the user
+            LPPermissible lpPermissible = new LPPermissible(player, user, plugin);
+
+            // Inject into the player
+            Injector.inject(player, lpPermissible);
+
+        } catch (Throwable t) {
+            t.printStackTrace();
+        }
+
+        if (player.isOp()) {
+
+            // We assume all users are not op, but those who are need extra calculation.
+            plugin.doAsync(() -> user.getUserData().preCalculate(plugin.getPreProcessContexts(true)));
+        }
+    }
+
+    @EventHandler(priority = EventPriority.MONITOR)
+    public void onPlayerLoginMonitor(PlayerLoginEvent e) {
+        if (e.getResult() != PlayerLoginEvent.Result.ALLOWED) {
+
+            // The player got denied on sync login.
+            onLeave(e.getPlayer().getUniqueId());
+        }
+    }
+
+    @EventHandler(priority = EventPriority.MONITOR) // Allow other plugins to see data when this event gets called.
+    public void onPlayerQuit(PlayerQuitEvent e) {
+        final Player player = e.getPlayer();
+        final UUID internal = plugin.getUuidCache().getUUID(player.getUniqueId());
+
+        // Remove from World cache
+        plugin.getWorldCalculator().getWorldCache().remove(internal);
+
+        // Remove the custom permissible
+        Injector.unInject(player, true);
+
+        // Handle auto op
+        if (plugin.getConfiguration().isAutoOp()) {
+            player.setOp(false);
+        }
+
+        // Call internal leave handling
+        onLeave(player.getUniqueId());
+    }
+
+    @EventHandler
+    public void onPlayerCommand(PlayerCommandPreprocessEvent e) {
+        if (plugin.getConfiguration().isOpsEnabled()) {
+            return;
+        }
+
+        String s = e.getMessage()
+                .replace("/", "")
+                .replace("bukkit:", "")
+                .replace("spigot:", "")
+                .replace("minecraft:", "");
+
+        if (s.equals("op") || s.startsWith("op ") || s.equals("deop") || s.startsWith("deop ")) {
+            e.setCancelled(true);
+            e.getPlayer().sendMessage(Message.OP_DISABLED.toString());
+        }
+    }
+
+    @EventHandler
+    public void onPluginEnable(PluginEnableEvent e) {
+        if (e.getPlugin().getName().equalsIgnoreCase("Vault")) {
+            plugin.tryVaultHook(true);
+        }
+    }
+}

bukkit/src/main/java/me/lucko/luckperms/bukkit/BukkitSenderFactory.java

@@ -20,25 +20,26 @@
  *  SOFTWARE.
  */
 
-package me.lucko.luckperms;
+package me.lucko.luckperms.bukkit;
+
+import me.lucko.luckperms.bukkit.compat.MessageHandler;
+import me.lucko.luckperms.common.LuckPermsPlugin;
+import me.lucko.luckperms.common.commands.sender.SenderFactory;
+import me.lucko.luckperms.common.constants.Constants;
 
-import lombok.AccessLevel;
-import lombok.NoArgsConstructor;
-import me.lucko.luckperms.commands.SenderFactory;
-import me.lucko.luckperms.constants.Constants;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
 
+import io.github.mkremins.fanciful.FancyMessage;
+
 import java.util.UUID;
 
-@NoArgsConstructor(access = AccessLevel.PRIVATE)
 public class BukkitSenderFactory extends SenderFactory<CommandSender> {
-    private static BukkitSenderFactory instance = null;
-    public static synchronized BukkitSenderFactory get() {
-        if (instance == null) {
-            instance = new BukkitSenderFactory();
-        }
-        return instance;
+    private final MessageHandler messageHandler;
+
+    public BukkitSenderFactory(LuckPermsPlugin plugin) {
+        super(plugin);
+        messageHandler = new MessageHandler();
     }
 
     @Override
@@ -46,7 +47,7 @@ public class BukkitSenderFactory extends SenderFactory<CommandSender> {
         if (sender instanceof Player) {
             return sender.getName();
         }
-        return Constants.getConsoleName();
+        return Constants.CONSOLE_NAME;
     }
 
     @Override
@@ -54,7 +55,7 @@ public class BukkitSenderFactory extends SenderFactory<CommandSender> {
         if (sender instanceof Player) {
             return ((Player) sender).getUniqueId();
         }
-        return Constants.getConsoleUUID();
+        return Constants.CONSOLE_UUID;
     }
 
     @Override
@@ -62,6 +63,11 @@ public class BukkitSenderFactory extends SenderFactory<CommandSender> {
         sender.sendMessage(s);
     }
 
+    @Override
+    protected void sendMessage(CommandSender sender, FancyMessage message) {
+        messageHandler.sendJsonMessage(sender, message);
+    }
+
     @Override
     protected boolean hasPermission(CommandSender sender, String node) {
         return sender.hasPermission(node);

bukkit/src/main/java/me/lucko/luckperms/bukkit/LPBukkitPlugin.java

@@ -0,0 +1,618 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.bukkit;
+
+import lombok.Getter;
+
+import com.google.common.collect.ImmutableMap;
+
+import me.lucko.luckperms.api.Contexts;
+import me.lucko.luckperms.api.Logger;
+import me.lucko.luckperms.api.LuckPermsApi;
+import me.lucko.luckperms.api.PlatformType;
+import me.lucko.luckperms.api.context.ContextSet;
+import me.lucko.luckperms.api.context.MutableContextSet;
+import me.lucko.luckperms.bukkit.calculators.AutoOPListener;
+import me.lucko.luckperms.bukkit.inject.Injector;
+import me.lucko.luckperms.bukkit.model.ChildPermissionProvider;
+import me.lucko.luckperms.bukkit.model.DefaultsProvider;
+import me.lucko.luckperms.bukkit.model.LPPermissible;
+import me.lucko.luckperms.bukkit.vault.VaultHook;
+import me.lucko.luckperms.common.LuckPermsPlugin;
+import me.lucko.luckperms.common.api.ApiHandler;
+import me.lucko.luckperms.common.api.ApiProvider;
+import me.lucko.luckperms.common.caching.handlers.CachedStateManager;
+import me.lucko.luckperms.common.calculators.CalculatorFactory;
+import me.lucko.luckperms.common.commands.sender.Sender;
+import me.lucko.luckperms.common.config.LPConfiguration;
+import me.lucko.luckperms.common.constants.Permission;
+import me.lucko.luckperms.common.contexts.ContextManager;
+import me.lucko.luckperms.common.contexts.ServerCalculator;
+import me.lucko.luckperms.common.core.UuidCache;
+import me.lucko.luckperms.common.core.model.User;
+import me.lucko.luckperms.common.data.Importer;
+import me.lucko.luckperms.common.dependencies.DependencyManager;
+import me.lucko.luckperms.common.managers.GroupManager;
+import me.lucko.luckperms.common.managers.TrackManager;
+import me.lucko.luckperms.common.managers.UserManager;
+import me.lucko.luckperms.common.managers.impl.GenericGroupManager;
+import me.lucko.luckperms.common.managers.impl.GenericTrackManager;
+import me.lucko.luckperms.common.managers.impl.GenericUserManager;
+import me.lucko.luckperms.common.messaging.RedisMessaging;
+import me.lucko.luckperms.common.storage.Storage;
+import me.lucko.luckperms.common.storage.StorageFactory;
+import me.lucko.luckperms.common.storage.StorageType;
+import me.lucko.luckperms.common.tasks.CacheHousekeepingTask;
+import me.lucko.luckperms.common.tasks.ExpireTemporaryTask;
+import me.lucko.luckperms.common.tasks.UpdateTask;
+import me.lucko.luckperms.common.utils.BufferedRequest;
+import me.lucko.luckperms.common.utils.DebugHandler;
+import me.lucko.luckperms.common.utils.LocaleManager;
+import me.lucko.luckperms.common.utils.LogFactory;
+import me.lucko.luckperms.common.utils.PermissionCache;
+
+import org.bukkit.World;
+import org.bukkit.command.PluginCommand;
+import org.bukkit.entity.Player;
+import org.bukkit.event.HandlerList;
+import org.bukkit.permissions.PermissionDefault;
+import org.bukkit.plugin.PluginManager;
+import org.bukkit.plugin.ServicePriority;
+import org.bukkit.plugin.java.JavaPlugin;
+
+import java.io.File;
+import java.io.InputStream;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.UUID;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.Executor;
+import java.util.concurrent.Executors;
+import java.util.stream.Collectors;
+
+@Getter
+public class LPBukkitPlugin extends JavaPlugin implements LuckPermsPlugin {
+    private Set<UUID> ignoringLogs;
+    private Executor syncExecutor;
+    private Executor asyncExecutor;
+    private VaultHook vaultHook = null;
+    private LPConfiguration configuration;
+    private UserManager userManager;
+    private GroupManager groupManager;
+    private TrackManager trackManager;
+    private Storage storage;
+    private RedisMessaging redisMessaging = null;
+    private UuidCache uuidCache;
+    private BukkitListener listener;
+    private ApiProvider apiProvider;
+    private Logger log;
+    private Importer importer;
+    private DefaultsProvider defaultsProvider;
+    private ChildPermissionProvider childPermissionProvider;
+    private LocaleManager localeManager;
+    private CachedStateManager cachedStateManager;
+    private ContextManager<Player> contextManager;
+    private WorldCalculator worldCalculator;
+    private CalculatorFactory calculatorFactory;
+    private BufferedRequest<Void> updateTaskBuffer;
+    private boolean started = false;
+    private DebugHandler debugHandler;
+    private BukkitSenderFactory senderFactory;
+    private PermissionCache permissionCache;
+
+    @Override
+    public void onEnable() {
+        // Used whilst the server is still starting
+        asyncExecutor = Executors.newCachedThreadPool();
+        syncExecutor = r -> getServer().getScheduler().runTask(this, r);
+        Executor bukkitAsyncExecutor = r -> getServer().getScheduler().runTaskAsynchronously(this, r);
+
+        log = LogFactory.wrap(getLogger());
+        ignoringLogs = ConcurrentHashMap.newKeySet();
+        debugHandler = new DebugHandler(bukkitAsyncExecutor, getVersion());
+        senderFactory = new BukkitSenderFactory(this);
+        permissionCache = new PermissionCache(bukkitAsyncExecutor);
+
+        getLog().info("Loading configuration...");
+        configuration = new BukkitConfig(this);
+
+        Set<StorageType> storageTypes = StorageFactory.getRequiredTypes(this, StorageType.H2);
+        DependencyManager.loadDependencies(this, storageTypes);
+
+        // setup the Bukkit defaults hook
+        defaultsProvider = new DefaultsProvider();
+        childPermissionProvider = new ChildPermissionProvider();
+
+        // give all plugins a chance to load their defaults, then refresh.
+        getServer().getScheduler().runTaskLater(this, () -> {
+            defaultsProvider.refresh();
+            childPermissionProvider.setup();
+
+            getServer().getScheduler().runTaskAsynchronously(this, () -> {
+                for (Map.Entry<String, Boolean> e : defaultsProvider.getOpDefaults().entrySet()) {
+                    permissionCache.offer(e.getKey());
+                }
+
+                for (Map.Entry<String, Boolean> e : defaultsProvider.getNonOpDefaults().entrySet()) {
+                    permissionCache.offer(e.getKey());
+                }
+
+                ImmutableMap<Map.Entry<String, Boolean>, ImmutableMap<String, Boolean>> permissions = childPermissionProvider.getPermissions();
+                for (Map.Entry<Map.Entry<String, Boolean>, ImmutableMap<String, Boolean>> e : permissions.entrySet()) {
+                    permissionCache.offer(e.getKey().getKey());
+                    for (Map.Entry<String, Boolean> e1 : e.getValue().entrySet()) {
+                        permissionCache.offer(e1.getKey());
+                    }
+                }
+            });
+
+        }, 1L);
+
+        // register events
+        PluginManager pm = getServer().getPluginManager();
+        listener = new BukkitListener(this);
+        pm.registerEvents(listener, this);
+
+        // initialise datastore
+        storage = StorageFactory.getInstance(this, StorageType.H2);
+
+        // initialise redis
+        if (getConfiguration().isRedisEnabled()) {
+            getLog().info("Loading redis...");
+            redisMessaging = new RedisMessaging(this);
+            try {
+                redisMessaging.init(getConfiguration().getRedisAddress(), getConfiguration().getRedisPassword());
+                getLog().info("Loaded redis successfully...");
+            } catch (Exception e) {
+                getLog().info("Couldn't load redis...");
+                e.printStackTrace();
+            }
+        }
+
+        // setup the update task buffer
+        updateTaskBuffer = new BufferedRequest<Void>(1000L, this::doAsync) {
+            @Override
+            protected Void perform() {
+                new UpdateTask(LPBukkitPlugin.this).run();
+                return null;
+            }
+        };
+
+        // load locale
+        localeManager = new LocaleManager();
+        File locale = new File(getDataFolder(), "lang.yml");
+        if (locale.exists()) {
+            getLog().info("Found locale file. Attempting to load from it.");
+            try {
+                localeManager.loadFromFile(locale);
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+        }
+
+        // register commands
+        getLog().info("Registering commands...");
+        BukkitCommand commandManager = new BukkitCommand(this);
+        PluginCommand main = getServer().getPluginCommand("luckperms");
+        main.setExecutor(commandManager);
+        main.setTabCompleter(commandManager);
+        main.setAliases(Arrays.asList("perms", "lp", "permissions", "perm"));
+
+        // load internal managers
+        getLog().info("Loading internal permission managers...");
+        uuidCache = new UuidCache(getConfiguration().isOnlineMode());
+        userManager = new GenericUserManager(this);
+        groupManager = new GenericGroupManager(this);
+        trackManager = new GenericTrackManager();
+        importer = new Importer(commandManager);
+        calculatorFactory = new BukkitCalculatorFactory(this);
+        cachedStateManager = new CachedStateManager(this);
+
+        contextManager = new ContextManager<>();
+        worldCalculator = new WorldCalculator(this);
+        pm.registerEvents(worldCalculator, this);
+        contextManager.registerCalculator(worldCalculator);
+        contextManager.registerCalculator(new ServerCalculator<>(getConfiguration().getServer()));
+
+        // handle server operators
+        if (getConfiguration().isAutoOp()) {
+            contextManager.registerListener(new AutoOPListener());
+        }
+
+        // Provide vault support
+        tryVaultHook(false);
+
+        // register with the LP API
+        getLog().info("Registering API...");
+        apiProvider = new ApiProvider(this);
+        ApiHandler.registerProvider(apiProvider);
+        getServer().getServicesManager().register(LuckPermsApi.class, apiProvider, this, ServicePriority.Normal);
+
+
+        // schedule update tasks
+        int mins = getConfiguration().getSyncTime();
+        if (mins > 0) {
+            long ticks = mins * 60 * 20;
+            getServer().getScheduler().runTaskTimerAsynchronously(this, () -> updateTaskBuffer.request(), 40L, ticks);
+        }
+
+        // run an update instantly.
+        updateTaskBuffer.requestDirectly();
+
+        // register tasks
+        getServer().getScheduler().runTaskTimerAsynchronously(this, new ExpireTemporaryTask(this), 60L, 60L);
+        getServer().getScheduler().runTaskTimerAsynchronously(this, new CacheHousekeepingTask(this), 2400L, 2400L);
+
+        // register permissions
+        registerPermissions(getConfiguration().isCommandsAllowOp() ? PermissionDefault.OP : PermissionDefault.FALSE);
+        if (!getConfiguration().isOpsEnabled()) {
+            getServer().getScheduler().runTask(this, () -> getServer().getOperators().forEach(o -> o.setOp(false)));
+        }
+
+        // replace the temporary executor when the Bukkit one starts
+        getServer().getScheduler().runTaskAsynchronously(this, () -> {
+            asyncExecutor = bukkitAsyncExecutor;
+        });
+
+        // Load any online users (in the case of a reload)
+        for (Player player : getServer().getOnlinePlayers()) {
+            doAsync(() -> {
+                listener.onAsyncLogin(player.getUniqueId(), player.getName());
+                User user = getUserManager().get(getUuidCache().getUUID(player.getUniqueId()));
+                if (user != null) {
+                    doSync(() -> {
+                        try {
+                            LPPermissible lpPermissible = new LPPermissible(player, user, this);
+                            Injector.inject(player, lpPermissible);
+                        } catch (Throwable t) {
+                            t.printStackTrace();
+                        }
+                    });
+                }
+            });
+        }
+
+        started = true;
+        getLog().info("Successfully loaded.");
+    }
+
+    @Override
+    public void onDisable() {
+        started = false;
+
+        defaultsProvider.close();
+        permissionCache.setShutdown(true);
+        debugHandler.setShutdown(true);
+
+        for (Player player : getServer().getOnlinePlayers()) {
+            Injector.unInject(player, false);
+            if (getConfiguration().isAutoOp()) {
+                player.setOp(false);
+            }
+
+            final User user = getUserManager().get(getUuidCache().getUUID(player.getUniqueId()));
+            if (user != null) {
+                user.unregisterData();
+                getUserManager().unload(user);
+            }
+        }
+
+        getLog().info("Closing datastore...");
+        storage.shutdown();
+
+        if (redisMessaging != null) {
+            getLog().info("Closing redis...");
+            redisMessaging.shutdown();
+        }
+
+        getLog().info("Unregistering API...");
+        ApiHandler.unregisterProvider();
+        getServer().getServicesManager().unregisterAll(this);
+
+        if (vaultHook != null) {
+            vaultHook.unhook(this);
+        }
+
+        // Bukkit will do this again when #onDisable completes, but we do it early to prevent NPEs elsewhere.
+        getServer().getScheduler().cancelTasks(this);
+        HandlerList.unregisterAll(this);
+
+        // Null everything
+        ignoringLogs = null;
+        syncExecutor = null;
+        asyncExecutor = null;
+        vaultHook = null;
+        configuration = null;
+        userManager = null;
+        groupManager = null;
+        trackManager = null;
+        storage = null;
+        redisMessaging = null;
+        uuidCache = null;
+        listener = null;
+        apiProvider = null;
+        log = null;
+        importer = null;
+        defaultsProvider = null;
+        childPermissionProvider = null;
+        localeManager = null;
+        cachedStateManager = null;
+        contextManager = null;
+        worldCalculator = null;
+        calculatorFactory = null;
+        updateTaskBuffer = null;
+        debugHandler = null;
+        senderFactory = null;
+        permissionCache = null;
+    }
+
+    public void tryVaultHook(boolean force) {
+        if (vaultHook != null) {
+            return;
+        }
+
+        getLog().info("Attempting to hook with Vault...");
+        try {
+            if (force || getServer().getPluginManager().isPluginEnabled("Vault")) {
+                vaultHook = new VaultHook();
+                vaultHook.hook(this);
+                getLog().info("Registered Vault permission & chat hook.");
+            } else {
+                getLog().info("Vault not found.");
+            }
+        } catch (Exception e) {
+            vaultHook = null;
+            getLog().severe("Error occurred whilst hooking into Vault.");
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    public void onUserRefresh(User user) {
+        LPPermissible lpp = Injector.getPermissible(uuidCache.getExternalUUID(user.getUuid()));
+        if (lpp != null) {
+            lpp.updateSubscriptions();
+        }
+    }
+
+    @Override
+    public void doAsync(Runnable r) {
+        asyncExecutor.execute(r);
+    }
+
+    @Override
+    public void doSync(Runnable r) {
+        syncExecutor.execute(r);
+    }
+
+    @Override
+    public void doAsyncRepeating(Runnable r, long interval) {
+        getServer().getScheduler().runTaskTimerAsynchronously(this, r, interval, interval);
+    }
+
+    @Override
+    public String getVersion() {
+        return getDescription().getVersion();
+    }
+
+    @Override
+    public PlatformType getType() {
+        return PlatformType.BUKKIT;
+    }
+
+    @Override
+    public String getServerName() {
+        return getServer().getName();
+    }
+
+    @Override
+    public String getServerVersion() {
+        return getServer().getVersion();
+    }
+
+    @Override
+    public File getMainDir() {
+        return getDataFolder();
+    }
+
+    @Override
+    public InputStream getResourceStream(String path) {
+        return getResource(path);
+    }
+
+    @Override
+    public Player getPlayer(User user) {
+        return getServer().getPlayer(uuidCache.getExternalUUID(user.getUuid()));
+    }
+
+    @Override
+    public Contexts getContextForUser(User user) {
+        Player player = getPlayer(user);
+        if (player == null) {
+            return null;
+        }
+        return new Contexts(
+                getContextManager().getApplicableContext(player),
+                getConfiguration().isIncludingGlobalPerms(),
+                getConfiguration().isIncludingGlobalWorldPerms(),
+                true,
+                getConfiguration().isApplyingGlobalGroups(),
+                getConfiguration().isApplyingGlobalWorldGroups(),
+                player.isOp()
+        );
+    }
+
+    @Override
+    public int getPlayerCount() {
+        return getServer().getOnlinePlayers().size();
+    }
+
+    @Override
+    public List<String> getPlayerList() {
+        return getServer().getOnlinePlayers().stream().map(Player::getName).collect(Collectors.toList());
+    }
+
+    @Override
+    public Set<UUID> getOnlinePlayers() {
+        return getServer().getOnlinePlayers().stream().map(Player::getUniqueId).collect(Collectors.toSet());
+    }
+
+    @Override
+    public boolean isOnline(UUID external) {
+        return getServer().getPlayer(external) != null;
+    }
+
+    @Override
+    public List<Sender> getSenders() {
+        return getServer().getOnlinePlayers().stream()
+                .map(p -> getSenderFactory().wrap(p))
+                .collect(Collectors.toList());
+    }
+
+    @Override
+    public Sender getConsoleSender() {
+        return getSenderFactory().wrap(getServer().getConsoleSender());
+    }
+
+    @Override
+    public Set<Contexts> getPreProcessContexts(boolean op) {
+        Set<ContextSet> c = new HashSet<>();
+        c.add(ContextSet.empty());
+        c.add(ContextSet.singleton("server", getConfiguration().getServer()));
+
+        // Pre process all worlds
+        c.addAll(getServer().getWorlds().stream()
+                .map(World::getName)
+                .map(s -> {
+                    MutableContextSet set = MutableContextSet.create();
+                    set.add("server", getConfiguration().getServer());
+                    set.add("world", s);
+                    return set.makeImmutable();
+                })
+                .collect(Collectors.toList())
+        );
+
+        // Pre process the separate Vault server, if any
+        if (!getConfiguration().getServer().equals(getConfiguration().getVaultServer())) {
+            c.add(ContextSet.singleton("server", getConfiguration().getVaultServer()));
+            c.addAll(getServer().getWorlds().stream()
+                    .map(World::getName)
+                    .map(s -> {
+                        MutableContextSet set = MutableContextSet.create();
+                        set.add("server", getConfiguration().getVaultServer());
+                        set.add("world", s);
+                        return set.makeImmutable();
+                    })
+                    .collect(Collectors.toList())
+            );
+        }
+
+        Set<Contexts> contexts = new HashSet<>();
+
+        // Convert to full Contexts
+        contexts.addAll(c.stream()
+                .map(set -> new Contexts(
+                        set,
+                        getConfiguration().isIncludingGlobalPerms(),
+                        getConfiguration().isIncludingGlobalWorldPerms(),
+                        true,
+                        getConfiguration().isApplyingGlobalGroups(),
+                        getConfiguration().isApplyingGlobalWorldGroups(),
+                        op
+                ))
+                .collect(Collectors.toSet())
+        );
+
+        // Check for and include varying Vault config options
+        boolean vaultDiff = getConfiguration().isVaultIncludingGlobal() != getConfiguration().isIncludingGlobalPerms() ||
+                !getConfiguration().isIncludingGlobalWorldPerms() ||
+                !getConfiguration().isApplyingGlobalGroups() ||
+                !getConfiguration().isApplyingGlobalWorldGroups();
+
+        if (vaultDiff) {
+            contexts.addAll(c.stream()
+                    .map(map -> new Contexts(map, getConfiguration().isVaultIncludingGlobal(), true, true, true, true, op))
+                    .collect(Collectors.toSet())
+            );
+        }
+
+        return contexts;
+    }
+
+    @Override
+    public LinkedHashMap<String, Object> getExtraInfo() {
+        LinkedHashMap<String, Object> map = new LinkedHashMap<>();
+        map.put("Vault Enabled", vaultHook != null);
+        map.put("Vault Server", configuration.getVaultServer());
+        map.put("Bukkit Defaults count", defaultsProvider.size());
+        map.put("Bukkit Child Permissions count", childPermissionProvider.getPermissions().size());
+        map.put("World Cache size", worldCalculator.getWorldCache().size());
+        map.put("Vault Including Global", configuration.isVaultIncludingGlobal());
+        map.put("Vault Ignoring World", configuration.isVaultIgnoreWorld());
+        map.put("Vault Primary Group Overrides", configuration.isVaultPrimaryGroupOverrides());
+        map.put("Vault Debug", configuration.isVaultDebug());
+        map.put("OPs Enabled", configuration.isOpsEnabled());
+        map.put("Auto OP", configuration.isAutoOp());
+        map.put("Commands Allow OPs", configuration.isCommandsAllowOp());
+        return map;
+    }
+
+    @Override
+    public Object getPlugin(String name) {
+        return getServer().getPluginManager().getPlugin(name);
+    }
+
+    @Override
+    public Object getService(Class clazz) {
+        return getServer().getServicesManager().load(clazz);
+    }
+
+    @SuppressWarnings("deprecation")
+    @Override
+    public UUID getUUID(String playerName) {
+        try {
+            return getServer().getOfflinePlayer(playerName).getUniqueId();
+        } catch (Exception e) {
+            return null;
+        }
+    }
+
+    @Override
+    public boolean isPluginLoaded(String name) {
+        return getServer().getPluginManager().isPluginEnabled(name);
+    }
+
+    private void registerPermissions(PermissionDefault def) {
+        PluginManager pm = getServer().getPluginManager();
+
+        for (Permission p : Permission.values()) {
+            for (String node : p.getNodes()) {
+                pm.addPermission(new org.bukkit.permissions.Permission(node, def));
+            }
+        }
+    }
+}

bukkit/src/main/java/me/lucko/luckperms/bukkit/WorldCalculator.java

@@ -0,0 +1,106 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.bukkit;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+import com.google.common.collect.Maps;
+
+import me.lucko.luckperms.api.context.ContextCalculator;
+import me.lucko.luckperms.api.context.MutableContextSet;
+import me.lucko.luckperms.common.LuckPermsPlugin;
+
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerChangedWorldEvent;
+import org.bukkit.event.player.PlayerLoginEvent;
+
+import java.util.Map;
+import java.util.UUID;
+import java.util.concurrent.ConcurrentHashMap;
+
+@RequiredArgsConstructor
+public class WorldCalculator extends ContextCalculator<Player> implements Listener {
+    private static final String WORLD_KEY = "world";
+
+    private final LuckPermsPlugin plugin;
+
+    @Getter
+    private final Map<UUID, String> worldCache = new ConcurrentHashMap<>();
+
+    @Override
+    public MutableContextSet giveApplicableContext(Player subject, MutableContextSet accumulator) {
+        String world = getWorld(subject);
+
+        if (world != null) {
+            accumulator.add(Maps.immutableEntry(WORLD_KEY, world));
+        }
+
+        return accumulator;
+    }
+
+    @Override
+    public boolean isContextApplicable(Player subject, Map.Entry<String, String> context) {
+        if (!context.getKey().equals(WORLD_KEY)) {
+            return false;
+        }
+
+        String world = getWorld(subject);
+        return world != null && world.equals(context.getValue());
+    }
+
+    private String getWorld(Player player) {
+        UUID internal = plugin.getUuidCache().getUUID(player.getUniqueId());
+        String world = worldCache.get(internal);
+        if (world == null) {
+            return null;
+        }
+
+        return plugin.getConfiguration().getWorldRewrites().getOrDefault(world, world);
+    }
+
+    @EventHandler(priority = EventPriority.LOW)
+    public void onPlayerJoin(PlayerLoginEvent e) {
+        UUID internal = plugin.getUuidCache().getUUID(e.getPlayer().getUniqueId());
+        worldCache.put(internal, e.getPlayer().getWorld().getName());
+        pushUpdate(
+                e.getPlayer(),
+                Maps.immutableEntry(WORLD_KEY, null),
+                Maps.immutableEntry(WORLD_KEY, e.getPlayer().getWorld().getName())
+        );
+    }
+
+    @EventHandler(priority = EventPriority.LOWEST)
+    public void onPlayerChangedWorld(PlayerChangedWorldEvent e) {
+        UUID internal = plugin.getUuidCache().getUUID(e.getPlayer().getUniqueId());
+        worldCache.put(internal, e.getPlayer().getWorld().getName());
+        pushUpdate(
+                e.getPlayer(),
+                Maps.immutableEntry(WORLD_KEY, e.getFrom().getName()),
+                Maps.immutableEntry(WORLD_KEY, e.getPlayer().getWorld().getName())
+        );
+    }
+}

bukkit/src/main/java/me/lucko/luckperms/bukkit/calculators/AttachmentProcessor.java

@@ -20,41 +20,39 @@
  *  SOFTWARE.
  */
 
-package me.lucko.luckperms.users;
+package me.lucko.luckperms.bukkit.calculators;
 
-import me.lucko.luckperms.LPBungeePlugin;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
 
-import java.util.UUID;
+import me.lucko.luckperms.api.Tristate;
+import me.lucko.luckperms.common.calculators.PermissionProcessor;
 
-public class BungeeUserManager extends UserManager {
-    private final LPBungeePlugin plugin;
+import org.bukkit.permissions.PermissionAttachmentInfo;
 
-    public BungeeUserManager(LPBungeePlugin plugin) {
-        super(plugin);
-        this.plugin = plugin;
-    }
+import java.util.Map;
+import java.util.function.Supplier;
+
+@AllArgsConstructor
+public class AttachmentProcessor implements PermissionProcessor {
+
+    @Getter
+    private final Supplier<Map<String, PermissionAttachmentInfo>> map;
 
     @Override
-    public void cleanup(User user) {
-        if (plugin.getProxy().getPlayer(plugin.getUuidCache().getExternalUUID(user.getUuid())) == null) {
-            unload(user);
+    public Tristate hasPermission(String permission) {
+        Map<String, PermissionAttachmentInfo> m = map.get();
+        if (m == null) {
+            return Tristate.UNDEFINED;
         }
+
+        PermissionAttachmentInfo pai = m.get(permission);
+        return pai == null ? Tristate.UNDEFINED : Tristate.fromBoolean(pai.getValue());
     }
 
     @Override
-    public User make(UUID uuid) {
-        return new BungeeUser(uuid, plugin);
+    public void updateBacking(Map<String, Boolean> map) {
+        // Do nothing, this doesn't use the backing
     }
 
-    @Override
-    public User make(UUID uuid, String username) {
-        return new BungeeUser(uuid, username, plugin);
-    }
-
-    @Override
-    public void updateAllUsers() {
-        plugin.getProxy().getPlayers().stream()
-                .map(p -> plugin.getUuidCache().getUUID(p.getUniqueId()))
-                .forEach(u -> plugin.getDatastore().loadUser(u, "null"));
-    }
 }

bukkit/src/main/java/me/lucko/luckperms/bukkit/calculators/AutoOPListener.java

@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.bukkit.calculators;
+
+import me.lucko.luckperms.api.context.ContextListener;
+import me.lucko.luckperms.bukkit.inject.Injector;
+import me.lucko.luckperms.bukkit.model.LPPermissible;
+
+import org.bukkit.entity.Player;
+
+import java.util.Map;
+import java.util.Optional;
+
+public class AutoOPListener implements ContextListener<Player> {
+
+    @Override
+    public void onContextChange(Player subject, Map.Entry<String, String> before, Map.Entry<String, String> current) throws Exception {
+        try {
+            LPPermissible permissible = Injector.getPermissible(subject.getUniqueId());
+            if (permissible == null) {
+                return;
+            }
+
+            Map<String, Boolean> backing = permissible.getUser().getUserData().getPermissionData(permissible.calculateContexts()).getImmutableBacking();
+            boolean op = Optional.ofNullable(backing.get("luckperms.autoop")).orElse(false);
+            subject.setOp(op);
+        } catch (Exception ignored) {}
+    }
+
+}

bukkit/src/main/java/me/lucko/luckperms/bukkit/calculators/ChildProcessor.java

@@ -20,42 +20,36 @@
  *  SOFTWARE.
  */
 
-package me.lucko.luckperms.users;
+package me.lucko.luckperms.bukkit.calculators;
 
-import me.lucko.luckperms.LPSpongePlugin;
+import lombok.RequiredArgsConstructor;
 
-import java.util.UUID;
+import me.lucko.luckperms.api.Tristate;
+import me.lucko.luckperms.bukkit.model.ChildPermissionProvider;
+import me.lucko.luckperms.common.calculators.PermissionProcessor;
 
-public class SpongeUserManager extends UserManager {
-    private final LPSpongePlugin plugin;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
 
-    public SpongeUserManager(LPSpongePlugin plugin) {
-        super(plugin);
-        this.plugin = plugin;
+@RequiredArgsConstructor
+public class ChildProcessor implements PermissionProcessor {
+    private final ChildPermissionProvider provider;
+    private Map<String, Boolean> childPermissions = new ConcurrentHashMap<>();
+
+    @Override
+    public Tristate hasPermission(String permission) {
+        Boolean b = childPermissions.get(permission);
+        return b == null ? Tristate.UNDEFINED : Tristate.fromBoolean(b);
     }
 
     @Override
-    public void cleanup(User user) {
-        if (!plugin.getGame().getServer().getPlayer(plugin.getUuidCache().getExternalUUID(user.getUuid())).isPresent()) {
-            unload(user);
-            plugin.getService().getUserSubjects().unload(user.getUuid());
+    public void updateBacking(Map<String, Boolean> map) {
+        childPermissions.clear();
+        for (Map.Entry<String, Boolean> e : map.entrySet()) {
+            Map<String, Boolean> children = provider.getPermissions().get(e);
+            if (children != null) {
+                childPermissions.putAll(children);
+            }
         }
     }
-
-    @Override
-    public User make(UUID uuid) {
-        return new SpongeUser(uuid, plugin);
-    }
-
-    @Override
-    public User make(UUID uuid, String username) {
-        return new SpongeUser(uuid, username, plugin);
-    }
-
-    @Override
-    public void updateAllUsers() {
-        plugin.getGame().getServer().getOnlinePlayers().stream()
-                .map(p -> plugin.getUuidCache().getUUID(p.getUniqueId()))
-                .forEach(u -> plugin.getDatastore().loadUser(u, "null"));
-    }
 }

bukkit/src/main/java/me/lucko/luckperms/bukkit/calculators/DefaultsProcessor.java

@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.bukkit.calculators;
+
+import lombok.AllArgsConstructor;
+
+import me.lucko.luckperms.api.Tristate;
+import me.lucko.luckperms.bukkit.model.DefaultsProvider;
+import me.lucko.luckperms.common.calculators.PermissionProcessor;
+
+import org.bukkit.Bukkit;
+import org.bukkit.permissions.Permission;
+
+import java.util.Map;
+
+@AllArgsConstructor
+public class DefaultsProcessor implements PermissionProcessor {
+    private final boolean isOp;
+    private final DefaultsProvider defaultsProvider;
+
+    @Override
+    public Tristate hasPermission(String permission) {
+        Tristate t = defaultsProvider.hasDefault(permission, isOp);
+        if (t != Tristate.UNDEFINED) {
+            return t;
+        }
+
+        Permission defPerm = Bukkit.getServer().getPluginManager().getPermission(permission);
+        return defPerm == null ? Tristate.UNDEFINED : Tristate.fromBoolean(defPerm.getDefault().getValue(isOp));
+    }
+
+    @Override
+    public void updateBacking(Map<String, Boolean> map) {
+        // Do nothing, this doesn't use the backing
+    }
+}

bukkit/src/main/java/me/lucko/luckperms/bukkit/compat/BukkitJsonMessageHandler.java

@@ -0,0 +1,122 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.bukkit.compat;
+
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+
+public class BukkitJsonMessageHandler {
+    private static boolean setup = false;
+    private static boolean triedAndFailed = false;
+
+    private static Method GET_HANDLE_METHOD;
+    private static Field PLAYER_CONNECTION_FIELD;
+    private static Method SEND_PACKET_METHOD;
+    private static Constructor<?> PACKET_CHAT_CONSTRUCTOR;
+    private static Method SERIALIZE_METHOD;
+
+    private static void setup(Object player) throws Exception {
+        Class<?> craftPlayerClass = player.getClass();
+        GET_HANDLE_METHOD = craftPlayerClass.getDeclaredMethod("getHandle");
+
+        Object handleObject = GET_HANDLE_METHOD.invoke(player);
+        Class<?> handleClass = handleObject.getClass();
+
+        PLAYER_CONNECTION_FIELD = handleClass.getDeclaredField("playerConnection");
+
+        Object playerConnectionObject = PLAYER_CONNECTION_FIELD.get(handleObject);
+
+        Method[] playerConnectionMethods = playerConnectionObject.getClass().getDeclaredMethods();
+        for (Method m : playerConnectionMethods) {
+            if (m.getName().equals("sendPacket")) {
+                SEND_PACKET_METHOD = m;
+                break;
+            }
+        }
+
+        Class<?> packetChatClass = Class.forName(getVersionedClassName("PacketPlayOutChat"));
+        Constructor[] packetConstructors = packetChatClass.getDeclaredConstructors();
+        for (Constructor c : packetConstructors) {
+            Class<?>[] parameters = c.getParameterTypes();
+            if (parameters.length == 1 && parameters[0].getName().endsWith("IChatBaseComponent")) {
+                PACKET_CHAT_CONSTRUCTOR = c;
+                break;
+            }
+        }
+
+        Class<?> baseComponentClass = Class.forName(getVersionedClassName("IChatBaseComponent"));
+        Class<?> chatSerializerClass = baseComponentClass.getClasses()[0];
+
+        SERIALIZE_METHOD = chatSerializerClass.getDeclaredMethod("a", String.class);
+    }
+
+    private static String getVersionedClassName(String className) {
+        Class server = Bukkit.getServer().getClass();
+        if (!server.getSimpleName().equals("CraftServer")) {
+            throw new RuntimeException("Couldn't reflect into server " + server);
+        }
+
+        String version;
+        if (server.getName().equals("org.bukkit.craftbukkit.CraftServer")) {
+            // Non versioned class
+            version = ".";
+        } else {
+            version = server.getName().substring("org.bukkit.craftbukkit".length());
+            version = version.substring(0, version.length() - "CraftServer".length());
+        }
+
+        return "net.minecraft.server" + version + className;
+    }
+
+    private static synchronized boolean trySetup(Object player) {
+        if (setup) return true;
+        if (triedAndFailed) return false;
+
+        try {
+            setup(player);
+            setup = true;
+            return true;
+        } catch (Exception e) {
+            triedAndFailed = true;
+            return false;
+        }
+    }
+
+    public boolean sendJsonMessage(Player player, String json) {
+        if (!trySetup(player)) {
+            return false;
+        }
+
+        try {
+            Object connection = PLAYER_CONNECTION_FIELD.get(GET_HANDLE_METHOD.invoke(player));
+            SEND_PACKET_METHOD.invoke(connection, PACKET_CHAT_CONSTRUCTOR.newInstance(SERIALIZE_METHOD.invoke(null, json)));
+            return true;
+        } catch (Exception e) {
+            return false;
+        }
+    }
+}

bukkit/src/main/java/me/lucko/luckperms/bukkit/compat/MessageHandler.java

@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.bukkit.compat;
+
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+
+import io.github.mkremins.fanciful.FancyMessage;
+
+public class MessageHandler {
+    private final BukkitJsonMessageHandler bukkitHandler;
+    private final SpigotJsonMessageHandler spigotHandler;
+
+    public MessageHandler() {
+        bukkitHandler = new BukkitJsonMessageHandler();
+        spigotHandler = isSpigot() ? new SpigotJsonMessageHandler() : null;
+    }
+
+    public void sendJsonMessage(CommandSender sender, FancyMessage message) {
+        if (sender instanceof Player) {
+            Player player = (Player) sender;
+            String json = message.toJSONString();
+
+            // Try Bukkit.
+            if (bukkitHandler.sendJsonMessage(player, json)) {
+                return;
+            }
+
+            // Try Spigot.
+            if (spigotHandler != null && spigotHandler.sendJsonMessage(player, json)) {
+                return;
+            }
+        }
+
+        // Fallback to Bukkit
+        sender.sendMessage(message.toOldMessageFormat());
+    }
+
+    private static boolean isSpigot() {
+        try {
+            Class.forName("net.md_5.bungee.chat.ComponentSerializer");
+            return true;
+        } catch (ClassNotFoundException e) {
+            return false;
+        }
+    }
+
+}

bukkit/src/main/java/me/lucko/luckperms/bukkit/compat/SpigotJsonMessageHandler.java

@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.bukkit.compat;
+
+import net.md_5.bungee.chat.ComponentSerializer;
+
+import org.bukkit.entity.Player;
+
+public class SpigotJsonMessageHandler {
+
+    public boolean sendJsonMessage(Player player, String json) {
+        try {
+            player.spigot().sendMessage(ComponentSerializer.parse(json));
+            return true;
+        } catch (Exception e) {
+            return false;
+        }
+    }
+
+}

bukkit/src/main/java/me/lucko/luckperms/bukkit/inject/DummyPermissibleBase.java

@@ -0,0 +1,108 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.bukkit.inject;
+
+import org.bukkit.permissions.PermissibleBase;
+import org.bukkit.permissions.Permission;
+import org.bukkit.permissions.PermissionAttachment;
+import org.bukkit.permissions.PermissionAttachmentInfo;
+import org.bukkit.plugin.Plugin;
+
+import java.util.Collections;
+import java.util.Set;
+
+public class DummyPermissibleBase extends PermissibleBase {
+    public DummyPermissibleBase() {
+        super(null);
+    }
+
+    @Override
+    public boolean isOp() {
+        return false;
+    }
+
+    @Override
+    public void setOp(boolean value) {
+
+    }
+
+    @Override
+    public boolean isPermissionSet(String name) {
+        return false;
+    }
+
+    @Override
+    public boolean isPermissionSet(Permission perm) {
+        return false;
+    }
+
+    @Override
+    public boolean hasPermission(String inName) {
+        return false;
+    }
+
+    @Override
+    public boolean hasPermission(Permission perm) {
+        return false;
+    }
+
+    @Override
+    public PermissionAttachment addAttachment(Plugin plugin, String name, boolean value) {
+        return null;
+    }
+
+    @Override
+    public PermissionAttachment addAttachment(Plugin plugin) {
+        return null;
+    }
+
+    @Override
+    public void removeAttachment(PermissionAttachment attachment) {
+
+    }
+
+    @Override
+    public void recalculatePermissions() {
+
+    }
+
+    @Override
+    public synchronized void clearPermissions() {
+
+    }
+
+    @Override
+    public PermissionAttachment addAttachment(Plugin plugin, String name, boolean value, int ticks) {
+        return null;
+    }
+
+    @Override
+    public PermissionAttachment addAttachment(Plugin plugin, int ticks) {
+        return null;
+    }
+
+    @Override
+    public Set<PermissionAttachmentInfo> getEffectivePermissions() {
+        return Collections.emptySet();
+    }
+}

bukkit/src/main/java/me/lucko/luckperms/bukkit/inject/Injector.java

@@ -0,0 +1,147 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.bukkit.inject;
+
+import lombok.experimental.UtilityClass;
+
+import me.lucko.luckperms.bukkit.model.LPPermissible;
+
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+import org.bukkit.permissions.PermissibleBase;
+import org.bukkit.permissions.PermissionAttachment;
+
+import java.lang.reflect.Field;
+import java.util.List;
+import java.util.Map;
+import java.util.UUID;
+import java.util.concurrent.ConcurrentHashMap;
+
+/**
+ * Injects a {@link LPPermissible} into a {@link Player}
+ */
+@UtilityClass
+public class Injector {
+    private static final Map<UUID, LPPermissible> INJECTED_PERMISSIBLES = new ConcurrentHashMap<>();
+
+    private static Field HUMAN_ENTITY_FIELD;
+    private static Field PERMISSIBLEBASE_ATTACHMENTS;
+
+    static {
+        try {
+            HUMAN_ENTITY_FIELD = Class.forName(getVersionedClassName("entity.CraftHumanEntity")).getDeclaredField("perm");
+            HUMAN_ENTITY_FIELD.setAccessible(true);
+
+            PERMISSIBLEBASE_ATTACHMENTS = PermissibleBase.class.getDeclaredField("attachments");
+            PERMISSIBLEBASE_ATTACHMENTS.setAccessible(true);
+
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    public static boolean inject(Player player, LPPermissible lpPermissible) {
+        try {
+            PermissibleBase existing = (PermissibleBase) HUMAN_ENTITY_FIELD.get(player);
+            if (existing instanceof LPPermissible) {
+                // uh oh
+                throw new IllegalStateException();
+            }
+
+            // Move attachments over from the old permissible.
+            List<PermissionAttachment> attachments = (List<PermissionAttachment>) PERMISSIBLEBASE_ATTACHMENTS.get(existing);
+            lpPermissible.addAttachments(attachments);
+            attachments.clear();
+            existing.clearPermissions();
+
+            lpPermissible.recalculatePermissions();
+            lpPermissible.setOldPermissible(existing);
+
+            lpPermissible.updateSubscriptionsAsync();
+
+            HUMAN_ENTITY_FIELD.set(player, lpPermissible);
+            INJECTED_PERMISSIBLES.put(player.getUniqueId(), lpPermissible);
+            return true;
+        } catch (Exception e) {
+            e.printStackTrace();
+            return false;
+        }
+    }
+
+    public static boolean unInject(Player player, boolean dummy) {
+        try {
+            PermissibleBase permissible = (PermissibleBase) HUMAN_ENTITY_FIELD.get(player);
+            if (permissible instanceof LPPermissible) {
+
+                permissible.clearPermissions();
+                ((LPPermissible) permissible).unsubscribeFromAllAsync();
+
+                if (dummy) {
+                    HUMAN_ENTITY_FIELD.set(player, new DummyPermissibleBase());
+                } else {
+                    LPPermissible lpp = ((LPPermissible) permissible);
+                    List<PermissionAttachment> attachments = lpp.getAttachments();
+
+                    PermissibleBase newPb = lpp.getOldPermissible();
+                    if (newPb == null) {
+                        newPb = new PermissibleBase(player);
+                    }
+
+                    List<PermissionAttachment> newAttachments = (List<PermissionAttachment>) PERMISSIBLEBASE_ATTACHMENTS.get(newPb);
+                    newAttachments.addAll(attachments);
+                    attachments.clear();
+
+                    HUMAN_ENTITY_FIELD.set(player, newPb);
+                }
+            }
+            INJECTED_PERMISSIBLES.remove(player.getUniqueId());
+            return true;
+        } catch (Exception e) {
+            e.printStackTrace();
+            return false;
+        }
+    }
+
+    public static LPPermissible getPermissible(UUID uuid) {
+        return INJECTED_PERMISSIBLES.get(uuid);
+    }
+
+    private static String getVersionedClassName(String className) {
+        Class server = Bukkit.getServer().getClass();
+        if (!server.getSimpleName().equals("CraftServer")) {
+            throw new RuntimeException("Couldn't inject into server " + server);
+        }
+
+        String version;
+        if (server.getName().equals("org.bukkit.craftbukkit.CraftServer")) {
+            // Non versioned class
+            version = ".";
+        } else {
+            version = server.getName().substring("org.bukkit.craftbukkit".length());
+            version = version.substring(0, version.length() - "CraftServer".length());
+        }
+
+        return "org.bukkit.craftbukkit" + version + className;
+    }
+
+}

bukkit/src/main/java/me/lucko/luckperms/bukkit/migration/MigrationBPermissions.java

@@ -20,26 +20,38 @@
  *  SOFTWARE.
  */
 
-package me.lucko.luckperms.commands.migration.subcommands;
+package me.lucko.luckperms.bukkit.migration;
+
+import de.bananaco.bpermissions.api.Calculable;
+import de.bananaco.bpermissions.api.CalculableType;
+import de.bananaco.bpermissions.api.Group;
+import de.bananaco.bpermissions.api.Permission;
+import de.bananaco.bpermissions.api.World;
+import de.bananaco.bpermissions.api.WorldManager;
 
-import de.bananaco.bpermissions.api.*;
-import me.lucko.luckperms.LuckPermsPlugin;
 import me.lucko.luckperms.api.Logger;
-import me.lucko.luckperms.commands.CommandResult;
-import me.lucko.luckperms.commands.Predicate;
-import me.lucko.luckperms.commands.Sender;
-import me.lucko.luckperms.commands.SubCommand;
-import me.lucko.luckperms.constants.Constants;
-import me.lucko.luckperms.core.PermissionHolder;
-import me.lucko.luckperms.data.LogEntry;
+import me.lucko.luckperms.api.MetaUtils;
+import me.lucko.luckperms.common.LuckPermsPlugin;
+import me.lucko.luckperms.common.commands.CommandException;
+import me.lucko.luckperms.common.commands.CommandResult;
+import me.lucko.luckperms.common.commands.SubCommand;
+import me.lucko.luckperms.common.commands.sender.Sender;
+import me.lucko.luckperms.common.constants.Constants;
+import me.lucko.luckperms.common.core.model.PermissionHolder;
+import me.lucko.luckperms.common.core.model.User;
+import me.lucko.luckperms.common.data.LogEntry;
+import me.lucko.luckperms.common.utils.Predicates;
 import me.lucko.luckperms.exceptions.ObjectAlreadyHasException;
-import me.lucko.luckperms.utils.ArgumentChecker;
 
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
-import java.util.*;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.UUID;
 
-import static me.lucko.luckperms.constants.Permission.MIGRATION;
+import static me.lucko.luckperms.common.constants.Permission.MIGRATION;
 
 public class MigrationBPermissions extends SubCommand<Object> {
     private static Field uConfigField;
@@ -81,12 +93,90 @@ public class MigrationBPermissions extends SubCommand<Object> {
         }
     }
 
+    private static void migrateHolder(LuckPermsPlugin plugin, World world, Calculable c, PermissionHolder holder) {
+        // Migrate the groups permissions in this world
+        for (Permission p : c.getPermissions()) {
+            try {
+                holder.setPermission(p.name(), p.isTrue(), "global", world.getName());
+                LogEntry.build()
+                        .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
+                        .acted(holder).action("set " + p.name() + " " + p.isTrue() + " global " + world.getName())
+                        .build().submit(plugin);
+            } catch (Exception ex) {
+                if (!(ex instanceof ObjectAlreadyHasException)) {
+                    ex.printStackTrace();
+                }
+            }
+
+            // Include any child permissions
+            for (Map.Entry<String, Boolean> child : p.getChildren().entrySet()) {
+                try {
+                    holder.setPermission(child.getKey(), child.getValue(), "global", world.getName());
+                    LogEntry.build()
+                            .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
+                            .acted(holder).action("set " + child.getKey() + " " + child.getValue() + " global " + world.getName())
+                            .build().submit(plugin);
+                } catch (Exception ex) {
+                    if (!(ex instanceof ObjectAlreadyHasException)) {
+                        ex.printStackTrace();
+                    }
+                }
+            }
+        }
+
+        // Migrate any inherited groups
+        for (Group parent : c.getGroups()) {
+            try {
+                holder.setPermission("group." + parent.getName(), true, "global", world.getName());
+                LogEntry.build()
+                        .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
+                        .acted(holder).action("setinherit " + parent.getName() + " global " + world.getName())
+                        .build().submit(plugin);
+            } catch (Exception ex) {
+                if (!(ex instanceof ObjectAlreadyHasException)) {
+                    ex.printStackTrace();
+                }
+            }
+        }
+
+        // Migrate existing meta
+        for (Map.Entry<String, String> meta : c.getMeta().entrySet()) {
+            if (meta.getKey().equalsIgnoreCase("prefix") || meta.getKey().equalsIgnoreCase("suffix")) {
+                String chatMeta = MetaUtils.escapeCharacters(meta.getValue());
+                try {
+                    holder.setPermission(meta.getKey().toLowerCase() + "." + c.getPriority() + "." + chatMeta, true);
+                    LogEntry.build()
+                            .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
+                            .acted(holder).action("set " + meta.getKey().toLowerCase() + "." + c.getPriority() + "." + chatMeta + " true")
+                            .build().submit(plugin);
+                } catch (Exception ex) {
+                    if (!(ex instanceof ObjectAlreadyHasException)) {
+                        ex.printStackTrace();
+                    }
+                }
+                continue;
+            }
+
+            try {
+                holder.setPermission("meta." + meta.getKey() + "." + meta.getValue(), true, "global", world.getName());
+                LogEntry.build()
+                        .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
+                        .acted(holder).action("set meta." + meta.getKey() + "." + meta.getValue() + " true global " + world.getName())
+                        .build().submit(plugin);
+            } catch (Exception ex) {
+                if (!(ex instanceof ObjectAlreadyHasException)) {
+                    ex.printStackTrace();
+                }
+            }
+        }
+    }
+
     public MigrationBPermissions() {
-        super("bpermissions", "Migration from bPermissions", "/%s migration bpermissions", MIGRATION, Predicate.alwaysFalse());
+        super("bpermissions", "Migration from bPermissions", MIGRATION, Predicates.alwaysFalse(), null);
     }
 
     @Override
-    public CommandResult execute(LuckPermsPlugin plugin, Sender sender, Object o, List<String> args, String label) {
+    public CommandResult execute(LuckPermsPlugin plugin, Sender sender, Object o, List<String> args, String label) throws CommandException {
         final Logger log = plugin.getLog();
 
         WorldManager worldManager = WorldManager.getInstance();
@@ -109,7 +199,7 @@ public class MigrationBPermissions extends SubCommand<Object> {
         log.info("bPermissions Migration: Starting world migration.");
         for (World world : worldManager.getAllWorlds()) {
             log.info("bPermissions Migration: Migrating world: " + world.getName());
-            
+
             // Migrate all groups
             log.info("bPermissions Migration: Starting group migration in world " + world.getName() + ".");
             int groupCount = 0;
@@ -121,19 +211,19 @@ public class MigrationBPermissions extends SubCommand<Object> {
                 }
 
                 // Make a LuckPerms group for the one being migrated.
-                plugin.getDatastore().createAndLoadGroup(groupName);
-                me.lucko.luckperms.groups.Group lpGroup = plugin.getGroupManager().get(groupName);
+                plugin.getStorage().createAndLoadGroup(groupName).join();
+                me.lucko.luckperms.common.core.model.Group lpGroup = plugin.getGroupManager().getIfLoaded(groupName);
                 try {
                     LogEntry.build()
-                            .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                            .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                             .acted(lpGroup).action("create")
                             .build().submit(plugin);
                 } catch (Exception ex) {
                     ex.printStackTrace();
                 }
-                
+
                 migrateHolder(plugin, world, group, lpGroup);
-                plugin.getDatastore().saveGroup(lpGroup);
+                plugin.getStorage().saveGroup(lpGroup);
             }
             log.info("bPermissions Migration: Migrated " + groupCount + " groups in world " + world.getName() + ".");
 
@@ -157,12 +247,12 @@ public class MigrationBPermissions extends SubCommand<Object> {
                 }
 
                 // Make a LuckPerms user for the one being migrated.
-                plugin.getDatastore().loadUser(uuid, "null");
-                me.lucko.luckperms.users.User lpUser = plugin.getUserManager().get(uuid);
+                plugin.getStorage().loadUser(uuid, "null").join();
+                User lpUser = plugin.getUserManager().get(uuid);
 
                 migrateHolder(plugin, world, user, lpUser);
 
-                plugin.getDatastore().saveUser(lpUser);
+                plugin.getStorage().saveUser(lpUser);
                 plugin.getUserManager().cleanup(lpUser);
             }
 
@@ -172,82 +262,4 @@ public class MigrationBPermissions extends SubCommand<Object> {
         log.info("bPermissions Migration: Success! Completed without any errors.");
         return CommandResult.SUCCESS;
     }
-    
-    private static void migrateHolder(LuckPermsPlugin plugin, World world, Calculable c, PermissionHolder holder) {
-        // Migrate the groups permissions in this world
-        for (Permission p : c.getPermissions()) {
-            try {
-                holder.setPermission(p.name(), p.isTrue(), "global", world.getName());
-                LogEntry.build()
-                        .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
-                        .acted(holder).action("set " + p.name() + " " + p.isTrue() + " global " + world.getName())
-                        .build().submit(plugin);
-            } catch (Exception ex) {
-                if (!(ex instanceof ObjectAlreadyHasException)) {
-                    ex.printStackTrace();
-                }
-            }
-
-            // Include any child permissions
-            for (Map.Entry<String, Boolean> child : p.getChildren().entrySet()) {
-                try {
-                    holder.setPermission(child.getKey(), child.getValue(), "global", world.getName());
-                    LogEntry.build()
-                            .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
-                            .acted(holder).action("set " + child.getKey() + " " + child.getValue() + " global " + world.getName())
-                            .build().submit(plugin);
-                } catch (Exception ex) {
-                    if (!(ex instanceof ObjectAlreadyHasException)) {
-                        ex.printStackTrace();
-                    }
-                }
-            }
-        }
-
-        // Migrate any inherited groups
-        for (Group parent : c.getGroups()) {
-            try {
-                holder.setPermission("group." + parent.getName(), true, "global", world.getName());
-                LogEntry.build()
-                        .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
-                        .acted(holder).action("setinherit " + parent.getName() + " global " + world.getName())
-                        .build().submit(plugin);
-            } catch (Exception ex) {
-                if (!(ex instanceof ObjectAlreadyHasException)) {
-                    ex.printStackTrace();
-                }
-            }
-        }
-
-        // Migrate existing meta
-        for (Map.Entry<String, String> meta : c.getMeta().entrySet()) {
-            if (meta.getKey().equalsIgnoreCase("prefix") || meta.getKey().equalsIgnoreCase("suffix")) {
-                String chatMeta = ArgumentChecker.escapeCharacters(meta.getValue());
-                try {
-                    holder.setPermission(meta.getKey().toLowerCase() + "." + c.getPriority() + "." + chatMeta, true);
-                    LogEntry.build()
-                            .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
-                            .acted(holder).action("set " + meta.getKey().toLowerCase() + "." + c.getPriority() + "." + chatMeta + " true")
-                            .build().submit(plugin);
-                } catch (Exception ex) {
-                    if (!(ex instanceof ObjectAlreadyHasException)) {
-                        ex.printStackTrace();
-                    }
-                }
-                continue;
-            }
-
-            try {
-                holder.setPermission("meta." + meta.getKey() + "." + meta.getValue(), true, "global", world.getName());
-                LogEntry.build()
-                        .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
-                        .acted(holder).action("set meta." + meta.getKey() + "." + meta.getValue() + " true global " + world.getName())
-                        .build().submit(plugin);
-            } catch (Exception ex) {
-                if (!(ex instanceof ObjectAlreadyHasException)) {
-                    ex.printStackTrace();
-                }
-            }
-        }
-    }
 }

bukkit/src/main/java/me/lucko/luckperms/bukkit/migration/MigrationGroupManager.java

@@ -20,18 +20,23 @@
  *  SOFTWARE.
  */
 
-package me.lucko.luckperms.commands.migration.subcommands;
+package me.lucko.luckperms.bukkit.migration;
 
-import me.lucko.luckperms.LuckPermsPlugin;
 import me.lucko.luckperms.api.Logger;
-import me.lucko.luckperms.commands.CommandResult;
-import me.lucko.luckperms.commands.Predicate;
-import me.lucko.luckperms.commands.Sender;
-import me.lucko.luckperms.commands.SubCommand;
-import me.lucko.luckperms.constants.Constants;
-import me.lucko.luckperms.constants.Permission;
-import me.lucko.luckperms.data.LogEntry;
+import me.lucko.luckperms.common.LuckPermsPlugin;
+import me.lucko.luckperms.common.commands.Arg;
+import me.lucko.luckperms.common.commands.CommandException;
+import me.lucko.luckperms.common.commands.CommandResult;
+import me.lucko.luckperms.common.commands.SubCommand;
+import me.lucko.luckperms.common.commands.sender.Sender;
+import me.lucko.luckperms.common.constants.Constants;
+import me.lucko.luckperms.common.constants.Permission;
+import me.lucko.luckperms.common.core.NodeFactory;
+import me.lucko.luckperms.common.data.LogEntry;
+import me.lucko.luckperms.common.utils.Predicates;
 import me.lucko.luckperms.exceptions.ObjectAlreadyHasException;
+import me.lucko.luckperms.exceptions.ObjectLacksException;
+
 import org.anjocaido.groupmanager.GlobalGroups;
 import org.anjocaido.groupmanager.GroupManager;
 import org.anjocaido.groupmanager.data.Group;
@@ -39,18 +44,22 @@ import org.anjocaido.groupmanager.data.User;
 import org.anjocaido.groupmanager.dataholder.WorldDataHolder;
 import org.anjocaido.groupmanager.dataholder.worlds.WorldsHolder;
 
-import java.lang.reflect.InvocationTargetException;
-import java.util.*;
+import java.util.AbstractMap;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.UUID;
 import java.util.stream.Collectors;
 
 public class MigrationGroupManager extends SubCommand<Object> {
     public MigrationGroupManager() {
-        super("groupmanager", "Migration from GroupManager", "/%s migration groupmanager [world names]",
-                Permission.MIGRATION, Predicate.is(0));
+        super("groupmanager", "Migration from GroupManager", Permission.MIGRATION, Predicates.is(0),
+                Arg.list(Arg.create("world names...", false, "a list of worlds to migrate permissions from"))
+        );
     }
 
     @Override
-    public CommandResult execute(LuckPermsPlugin plugin, Sender sender, Object o, List<String> args, String label) {
+    public CommandResult execute(LuckPermsPlugin plugin, Sender sender, Object o, List<String> args, String label) throws CommandException {
         final Logger log = plugin.getLog();
         if (!plugin.isPluginLoaded("GroupManager")) {
             log.severe("GroupManager Migration: Error -> GroupManager is not loaded.");
@@ -65,21 +74,14 @@ public class MigrationGroupManager extends SubCommand<Object> {
 
         // Migrate Global Groups
         log.info("GroupManager Migration: Starting Global Group migration.");
-
-        GlobalGroups gg;
-        try {
-            gg = (GlobalGroups) GroupManager.class.getMethod("getGlobalGroups").invoke(gm);
-        } catch (IllegalAccessException | InvocationTargetException | NoSuchMethodException e) {
-            e.printStackTrace();
-            return CommandResult.FAILURE;
-        }
+        GlobalGroups gg = GroupManager.getGlobalGroups();
 
         for (Group g : gg.getGroupList()) {
-            plugin.getDatastore().createAndLoadGroup(g.getName().toLowerCase());
-            me.lucko.luckperms.groups.Group group = plugin.getGroupManager().get(g.getName().toLowerCase());
+            plugin.getStorage().createAndLoadGroup(g.getName().toLowerCase()).join();
+            me.lucko.luckperms.common.core.model.Group group = plugin.getGroupManager().getIfLoaded(g.getName().toLowerCase());
             try {
                 LogEntry.build()
-                        .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                        .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                         .acted(group).action("create")
                         .build().submit(plugin);
             } catch (Exception ex) {
@@ -99,7 +101,7 @@ public class MigrationGroupManager extends SubCommand<Object> {
                 try {
                     group.setPermission(node, value);
                     LogEntry.build()
-                            .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                            .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                             .acted(group).action("set " + node + " " + value)
                             .build().submit(plugin);
                 } catch (Exception ex) {
@@ -113,7 +115,7 @@ public class MigrationGroupManager extends SubCommand<Object> {
                 try {
                     group.setPermission("group." + s.toLowerCase(), true);
                     LogEntry.build()
-                            .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                            .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                             .acted(group).action("setinherit " + s.toLowerCase())
                             .build().submit(plugin);
                 } catch (Exception ex) {
@@ -123,33 +125,21 @@ public class MigrationGroupManager extends SubCommand<Object> {
                 }
             }
 
-            plugin.getDatastore().saveGroup(group);
+            plugin.getStorage().saveGroup(group);
         }
 
         Map<UUID, Map<Map.Entry<String, String>, Boolean>> users = new HashMap<>();
+        Map<UUID, String> primaryGroups = new HashMap<>();
         Map<String, Map<Map.Entry<String, String>, Boolean>> groups = new HashMap<>();
 
-        WorldsHolder wh;
-        try {
-            wh = (WorldsHolder) GroupManager.class.getMethod("getWorldsHolder").invoke(gm);
-        } catch (IllegalAccessException | InvocationTargetException | NoSuchMethodException e) {
-            e.printStackTrace();
-            return CommandResult.FAILURE;
-        }
+        WorldsHolder wh = gm.getWorldsHolder();
 
         // Collect data for all users and groups.
         log.info("GroupManager Migration: Starting user and group migration.");
         for (String world : worlds) {
             world = world.toLowerCase();
 
-            WorldDataHolder wdh;
-
-            try {
-                wdh = (WorldDataHolder) WorldsHolder.class.getMethod("getWorldData", String.class).invoke(wh, world);
-            } catch (IllegalAccessException | InvocationTargetException | NoSuchMethodException e) {
-                e.printStackTrace();
-                return CommandResult.FAILURE;
-            }
+            WorldDataHolder wdh = wh.getWorldData(world);
 
             for (Group g : wdh.getGroupList()) {
                 groups.putIfAbsent(g.getName().toLowerCase(), new HashMap<>());
@@ -176,7 +166,7 @@ public class MigrationGroupManager extends SubCommand<Object> {
                 UUID uuid;
                 try {
                     uuid = UUID.fromString(user.getUUID());
-                } catch (IllegalArgumentException e){
+                } catch (IllegalArgumentException e) {
                     continue;
                 }
 
@@ -195,7 +185,13 @@ public class MigrationGroupManager extends SubCommand<Object> {
                     users.get(uuid).put(new AbstractMap.SimpleEntry<>(world, node), value);
                 }
 
-                users.get(uuid).put(new AbstractMap.SimpleEntry<>(world, "group." + user.getGroupName().toLowerCase()), true);
+                String finalWorld = world;
+                users.get(uuid).putAll(user.subGroupListStringCopy().stream()
+                        .map(n -> "group." + n)
+                        .map(n -> new AbstractMap.SimpleEntry<>(finalWorld, n))
+                        .collect(Collectors.toMap(n -> n, n -> true))
+                );
+                primaryGroups.put(uuid, user.getGroupName());
             }
 
         }
@@ -204,11 +200,11 @@ public class MigrationGroupManager extends SubCommand<Object> {
         log.info("GroupManager Migration: Found a total of " + users.size() + " users and " + groups.size() + " groups.");
 
         for (Map.Entry<String, Map<Map.Entry<String, String>, Boolean>> e : groups.entrySet()) {
-            plugin.getDatastore().createAndLoadGroup(e.getKey());
-            me.lucko.luckperms.groups.Group group = plugin.getGroupManager().get(e.getKey());
+            plugin.getStorage().createAndLoadGroup(e.getKey()).join();
+            me.lucko.luckperms.common.core.model.Group group = plugin.getGroupManager().getIfLoaded(e.getKey());
             try {
                 LogEntry.build()
-                        .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                        .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                         .acted(group).action("create")
                         .build().submit(plugin);
             } catch (Exception ex) {
@@ -221,17 +217,17 @@ public class MigrationGroupManager extends SubCommand<Object> {
                 // n.key.value = node
                 // n.value = true/false
                 try {
-                    group.setPermission("global-" + n.getKey().getKey() + "/" + n.getKey().getValue(), n.getValue());
+                    group.setPermission(NodeFactory.fromSerialisedNode("global-" + n.getKey().getKey() + "/" + n.getKey().getValue(), n.getValue()));
 
                     if (n.getKey().getValue().startsWith("group.")) {
                         String groupName = n.getKey().getValue().substring(6);
                         LogEntry.build()
-                                .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                                .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                                 .acted(group).action("setinherit " + groupName + " global " + n.getKey().getKey())
                                 .build().submit(plugin);
                     } else {
                         LogEntry.build()
-                                .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                                .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                                 .acted(group).action("set " + n.getKey().getValue() + " " + n.getValue() + " global " + n.getKey().getKey())
                                 .build().submit(plugin);
                     }
@@ -243,29 +239,29 @@ public class MigrationGroupManager extends SubCommand<Object> {
                 }
             }
 
-            plugin.getDatastore().saveGroup(group);
+            plugin.getStorage().saveGroup(group);
         }
 
         for (Map.Entry<UUID, Map<Map.Entry<String, String>, Boolean>> e : users.entrySet()) {
-            plugin.getDatastore().loadUser(e.getKey(), "null");
-            me.lucko.luckperms.users.User user = plugin.getUserManager().get(e.getKey());
+            plugin.getStorage().loadUser(e.getKey(), "null").join();
+            me.lucko.luckperms.common.core.model.User user = plugin.getUserManager().get(e.getKey());
 
             for (Map.Entry<Map.Entry<String, String>, Boolean> n : e.getValue().entrySet()) {
                 // n.key.key = world
                 // n.key.value = node
                 // n.value = true/false
                 try {
-                    user.setPermission("global-" + n.getKey().getKey() + "/" + n.getKey().getValue(), n.getValue());
+                    user.setPermission(NodeFactory.fromSerialisedNode("global-" + n.getKey().getKey() + "/" + n.getKey().getValue(), n.getValue()));
 
                     if (n.getKey().getValue().startsWith("group.")) {
                         String group = n.getKey().getValue().substring(6);
                         LogEntry.build()
-                                .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                                .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                                 .acted(user).action("addgroup " + group + " global " + n.getKey().getKey())
                                 .build().submit(plugin);
                     } else {
                         LogEntry.build()
-                                .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                                .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                                 .acted(user).action("set " + n.getKey().getValue() + " " + n.getValue() + " global " + n.getKey().getKey())
                                 .build().submit(plugin);
                     }
@@ -277,7 +273,20 @@ public class MigrationGroupManager extends SubCommand<Object> {
                 }
             }
 
-            plugin.getDatastore().saveUser(user);
+            String primaryGroup = primaryGroups.get(e.getKey());
+            if (primaryGroup != null) {
+                try {
+                    user.setPermission("group." + primaryGroup, true);
+                } catch (ObjectAlreadyHasException ignored) {
+                }
+                user.setPrimaryGroup(primaryGroup);
+                try {
+                    user.unsetPermission("group.default");
+                } catch (ObjectLacksException ignored) {
+                }
+            }
+
+            plugin.getStorage().saveUser(user);
             plugin.getUserManager().cleanup(user);
         }
 

bukkit/src/main/java/me/lucko/luckperms/bukkit/migration/MigrationPermissionsEx.java

@@ -20,22 +20,25 @@
  *  SOFTWARE.
  */
 
-package me.lucko.luckperms.commands.migration.subcommands;
+package me.lucko.luckperms.bukkit.migration;
 
-import me.lucko.luckperms.LuckPermsPlugin;
 import me.lucko.luckperms.api.Logger;
+import me.lucko.luckperms.api.MetaUtils;
 import me.lucko.luckperms.api.PlatformType;
-import me.lucko.luckperms.commands.CommandResult;
-import me.lucko.luckperms.commands.Predicate;
-import me.lucko.luckperms.commands.Sender;
-import me.lucko.luckperms.commands.SubCommand;
-import me.lucko.luckperms.constants.Constants;
-import me.lucko.luckperms.constants.Permission;
-import me.lucko.luckperms.data.LogEntry;
+import me.lucko.luckperms.common.LuckPermsPlugin;
+import me.lucko.luckperms.common.commands.Arg;
+import me.lucko.luckperms.common.commands.CommandException;
+import me.lucko.luckperms.common.commands.CommandResult;
+import me.lucko.luckperms.common.commands.SubCommand;
+import me.lucko.luckperms.common.commands.sender.Sender;
+import me.lucko.luckperms.common.constants.Constants;
+import me.lucko.luckperms.common.constants.Permission;
+import me.lucko.luckperms.common.core.model.Group;
+import me.lucko.luckperms.common.core.model.User;
+import me.lucko.luckperms.common.data.LogEntry;
+import me.lucko.luckperms.common.utils.Predicates;
 import me.lucko.luckperms.exceptions.ObjectAlreadyHasException;
-import me.lucko.luckperms.groups.Group;
-import me.lucko.luckperms.users.User;
-import me.lucko.luckperms.utils.ArgumentChecker;
+
 import ru.tehkode.permissions.NativeInterface;
 import ru.tehkode.permissions.PermissionGroup;
 import ru.tehkode.permissions.PermissionManager;
@@ -43,20 +46,20 @@ import ru.tehkode.permissions.PermissionUser;
 import ru.tehkode.permissions.bukkit.PermissionsEx;
 
 import java.lang.reflect.Field;
-import java.lang.reflect.InvocationTargetException;
 import java.util.List;
 import java.util.UUID;
 import java.util.stream.Collectors;
 
 public class MigrationPermissionsEx extends SubCommand<Object> {
     public MigrationPermissionsEx() {
-        super("permissionsex", "Migration from PermissionsEx", "/%s migration permissionsex [world names]",
-                Permission.MIGRATION, Predicate.alwaysFalse());
+        super("permissionsex", "Migration from PermissionsEx", Permission.MIGRATION, Predicates.alwaysFalse(),
+                Arg.list(Arg.create("world names...", false, "a list of worlds to migrate permissions from"))
+        );
     }
 
     @SuppressWarnings("deprecation")
     @Override
-    public CommandResult execute(LuckPermsPlugin plugin, Sender sender, Object o, List<String> args, String label) {
+    public CommandResult execute(LuckPermsPlugin plugin, Sender sender, Object o, List<String> args, String label) throws CommandException {
         final Logger log = plugin.getLog();
         if (!plugin.isPluginLoaded("PermissionsEx")) {
             log.severe("PermissionsEx Migration: Error -> PermissionsEx is not loaded.");
@@ -74,13 +77,7 @@ public class MigrationPermissionsEx extends SubCommand<Object> {
                 .collect(Collectors.toList());
 
         PermissionsEx pex = (PermissionsEx) plugin.getPlugin("PermissionsEx");
-        PermissionManager manager; // The compiler complains if you call the method directly, as Bukkit is not in this module.
-        try {
-            manager = (PermissionManager) PermissionsEx.class.getMethod("getPermissionsManager").invoke(pex);
-        } catch (IllegalAccessException | InvocationTargetException | NoSuchMethodException e) {
-            e.printStackTrace();
-            return CommandResult.FAILURE;
-        }
+        PermissionManager manager = pex.getPermissionsManager();
 
         NativeInterface ni;
         try {
@@ -100,15 +97,15 @@ public class MigrationPermissionsEx extends SubCommand<Object> {
 
         for (PermissionGroup group : manager.getGroupList()) {
             int groupWeight = group.getWeight() * -1;
-            groupCount ++;
+            groupCount++;
             maxGroupWeight = Math.max(maxGroupWeight, groupWeight);
 
             final String name = group.getName().toLowerCase();
-            plugin.getDatastore().createAndLoadGroup(name);
-            Group lpGroup = plugin.getGroupManager().get(name);
+            plugin.getStorage().createAndLoadGroup(name).join();
+            Group lpGroup = plugin.getGroupManager().getIfLoaded(name);
             try {
                 LogEntry.build()
-                        .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                        .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                         .acted(lpGroup).action("create")
                         .build().submit(plugin);
             } catch (Exception ex) {
@@ -126,7 +123,7 @@ public class MigrationPermissionsEx extends SubCommand<Object> {
                     try {
                         lpGroup.setPermission(node, value);
                         LogEntry.build()
-                                .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                                .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                                 .acted(lpGroup).action("set " + node + " " + value)
                                 .build().submit(plugin);
                     } catch (Exception ex) {
@@ -151,7 +148,7 @@ public class MigrationPermissionsEx extends SubCommand<Object> {
                         try {
                             lpGroup.setPermission(node, value, "global", world);
                             LogEntry.build()
-                                    .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                                    .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                                     .acted(lpGroup).action("set " + node + " " + value + " global " + world)
                                     .build().submit(plugin);
                         } catch (Exception ex) {
@@ -167,7 +164,7 @@ public class MigrationPermissionsEx extends SubCommand<Object> {
                 try {
                     lpGroup.setPermission("group." + g.getName().toLowerCase(), true);
                     LogEntry.build()
-                            .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                            .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                             .acted(lpGroup).action("setinherit " + g.getName().toLowerCase())
                             .build().submit(plugin);
                 } catch (Exception ex) {
@@ -183,7 +180,7 @@ public class MigrationPermissionsEx extends SubCommand<Object> {
                         try {
                             lpGroup.setPermission("group." + g.getName().toLowerCase(), true, "global", world);
                             LogEntry.build()
-                                    .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                                    .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                                     .acted(lpGroup).action("setinherit " + g.getName().toLowerCase() + " global " + world)
                                     .build().submit(plugin);
                         } catch (Exception ex) {
@@ -199,11 +196,11 @@ public class MigrationPermissionsEx extends SubCommand<Object> {
             String suffix = group.getOwnSuffix();
 
             if (prefix != null && !prefix.equals("")) {
-                prefix = ArgumentChecker.escapeCharacters(prefix);
+                prefix = MetaUtils.escapeCharacters(prefix);
                 try {
                     lpGroup.setPermission("prefix." + groupWeight + "." + prefix, true);
                     LogEntry.build()
-                            .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                            .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                             .acted(lpGroup).action("set prefix." + groupWeight + "." + prefix + " true")
                             .build().submit(plugin);
                 } catch (Exception ex) {
@@ -214,11 +211,11 @@ public class MigrationPermissionsEx extends SubCommand<Object> {
             }
 
             if (suffix != null && !suffix.equals("")) {
-                suffix = ArgumentChecker.escapeCharacters(suffix);
+                suffix = MetaUtils.escapeCharacters(suffix);
                 try {
                     lpGroup.setPermission("suffix." + groupWeight + "." + suffix, true);
                     LogEntry.build()
-                            .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                            .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                             .acted(lpGroup).action("set suffix." + groupWeight + "." + suffix + " true")
                             .build().submit(plugin);
                 } catch (Exception ex) {
@@ -228,7 +225,7 @@ public class MigrationPermissionsEx extends SubCommand<Object> {
                 }
             }
 
-            plugin.getDatastore().saveGroup(lpGroup);
+            plugin.getStorage().saveGroup(lpGroup);
 
         }
 
@@ -256,7 +253,7 @@ public class MigrationPermissionsEx extends SubCommand<Object> {
             }
 
             userCount++;
-            plugin.getDatastore().loadUser(u, "null");
+            plugin.getStorage().loadUser(u, user.getName()).join();
             User lpUser = plugin.getUserManager().get(u);
 
             try {
@@ -270,7 +267,7 @@ public class MigrationPermissionsEx extends SubCommand<Object> {
                     try {
                         lpUser.setPermission(node, value);
                         LogEntry.build()
-                                .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                                .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                                 .acted(lpUser).action("set " + node + " " + value)
                                 .build().submit(plugin);
                     } catch (Exception ex) {
@@ -295,7 +292,7 @@ public class MigrationPermissionsEx extends SubCommand<Object> {
                         try {
                             lpUser.setPermission(node, value, "global", world);
                             LogEntry.build()
-                                    .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                                    .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                                     .acted(lpUser).action("set " + node + " " + value + " global " + world)
                                     .build().submit(plugin);
                         } catch (Exception ex) {
@@ -311,7 +308,7 @@ public class MigrationPermissionsEx extends SubCommand<Object> {
                 try {
                     lpUser.setPermission("group." + s.toLowerCase(), true);
                     LogEntry.build()
-                            .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                            .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                             .acted(lpUser).action("addgroup " + s.toLowerCase())
                             .build().submit(plugin);
                 } catch (Exception ex) {
@@ -327,7 +324,7 @@ public class MigrationPermissionsEx extends SubCommand<Object> {
                         try {
                             lpUser.setPermission("group." + s.toLowerCase(), true, "global", world);
                             LogEntry.build()
-                                    .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                                    .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                                     .acted(lpUser).action("addgroup " + s.toLowerCase() + " global " + world)
                                     .build().submit(plugin);
                         } catch (Exception ex) {
@@ -343,11 +340,11 @@ public class MigrationPermissionsEx extends SubCommand<Object> {
             String suffix = user.getOwnSuffix();
 
             if (prefix != null && !prefix.equals("")) {
-                prefix = ArgumentChecker.escapeCharacters(prefix);
+                prefix = MetaUtils.escapeCharacters(prefix);
                 try {
                     lpUser.setPermission("prefix." + maxGroupWeight + "." + prefix, true);
                     LogEntry.build()
-                            .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                            .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                             .acted(lpUser).action("set prefix." + maxGroupWeight + "." + prefix + " true")
                             .build().submit(plugin);
                 } catch (Exception ex) {
@@ -358,11 +355,11 @@ public class MigrationPermissionsEx extends SubCommand<Object> {
             }
 
             if (suffix != null && !suffix.equals("")) {
-                suffix = ArgumentChecker.escapeCharacters(suffix);
+                suffix = MetaUtils.escapeCharacters(suffix);
                 try {
                     lpUser.setPermission("suffix." + maxGroupWeight + "." + suffix, true);
                     LogEntry.build()
-                            .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                            .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                             .acted(lpUser).action("set suffix." + maxGroupWeight + "." + suffix + " true")
                             .build().submit(plugin);
                 } catch (Exception ex) {
@@ -384,12 +381,13 @@ public class MigrationPermissionsEx extends SubCommand<Object> {
             if (primary != null) {
                 try {
                     lpUser.setPermission("group." + primary.toLowerCase(), true);
-                } catch (ObjectAlreadyHasException ignored) {}
+                } catch (ObjectAlreadyHasException ignored) {
+                }
                 lpUser.setPrimaryGroup(primary);
             }
 
             plugin.getUserManager().cleanup(lpUser);
-            plugin.getDatastore().saveUser(lpUser);
+            plugin.getStorage().saveUser(lpUser);
         }
 
         log.info("PermissionsEx Migration: Migrated " + userCount + " users.");

bukkit/src/main/java/me/lucko/luckperms/bukkit/migration/MigrationPowerfulPerms.java

@@ -20,25 +20,34 @@
  *  SOFTWARE.
  */
 
-package me.lucko.luckperms.commands.migration.subcommands;
+package me.lucko.luckperms.bukkit.migration;
 
-import com.github.cheesesoftware.PowerfulPermsAPI.*;
+import lombok.Cleanup;
+
+import com.github.cheesesoftware.PowerfulPermsAPI.CachedGroup;
+import com.github.cheesesoftware.PowerfulPermsAPI.Group;
+import com.github.cheesesoftware.PowerfulPermsAPI.Permission;
+import com.github.cheesesoftware.PowerfulPermsAPI.PermissionManager;
+import com.github.cheesesoftware.PowerfulPermsAPI.PowerfulPermsPlugin;
+import com.github.cheesesoftware.PowerfulPermsAPI.ResultRunnable;
 import com.google.common.util.concurrent.ListenableFuture;
 import com.zaxxer.hikari.HikariDataSource;
-import lombok.Cleanup;
-import me.lucko.luckperms.LuckPermsPlugin;
+
 import me.lucko.luckperms.api.Logger;
 import me.lucko.luckperms.api.data.Callback;
-import me.lucko.luckperms.commands.CommandResult;
-import me.lucko.luckperms.commands.Predicate;
-import me.lucko.luckperms.commands.Sender;
-import me.lucko.luckperms.commands.SubCommand;
-import me.lucko.luckperms.commands.migration.subcommands.utils.LPResultRunnable;
-import me.lucko.luckperms.constants.Constants;
-import me.lucko.luckperms.core.PermissionHolder;
-import me.lucko.luckperms.data.LogEntry;
+import me.lucko.luckperms.bukkit.migration.utils.LPResultRunnable;
+import me.lucko.luckperms.common.LuckPermsPlugin;
+import me.lucko.luckperms.common.commands.Arg;
+import me.lucko.luckperms.common.commands.CommandException;
+import me.lucko.luckperms.common.commands.CommandResult;
+import me.lucko.luckperms.common.commands.SubCommand;
+import me.lucko.luckperms.common.commands.sender.Sender;
+import me.lucko.luckperms.common.constants.Constants;
+import me.lucko.luckperms.common.core.model.PermissionHolder;
+import me.lucko.luckperms.common.core.model.User;
+import me.lucko.luckperms.common.data.LogEntry;
+import me.lucko.luckperms.common.utils.Predicates;
 import me.lucko.luckperms.exceptions.ObjectAlreadyHasException;
-import me.lucko.luckperms.users.User;
 
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
@@ -46,11 +55,17 @@ import java.sql.Connection;
 import java.sql.DatabaseMetaData;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
-import java.util.*;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.UUID;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.ExecutionException;
 
-import static me.lucko.luckperms.constants.Permission.MIGRATION;
+import static me.lucko.luckperms.common.constants.Permission.MIGRATION;
 
 @SuppressWarnings("unchecked")
 public class MigrationPowerfulPerms extends SubCommand<Object> {
@@ -75,25 +90,29 @@ public class MigrationPowerfulPerms extends SubCommand<Object> {
         try {
             Class.forName("com.github.cheesesoftware.PowerfulPermsAPI.ResponseRunnable");
             legacy = true;
-        } catch (ClassNotFoundException ignored) {}
+        } catch (ClassNotFoundException ignored) {
+        }
 
         if (legacy) {
             try {
                 getPlayerPermissionsMethod = PermissionManager.class.getMethod("getPlayerOwnPermissions", UUID.class, ResultRunnable.class);
                 getPlayerPermissionsMethod.setAccessible(true);
-            } catch (NoSuchMethodException ignored) {}
+            } catch (NoSuchMethodException ignored) {
+            }
         } else {
             try {
                 getPlayerPermissionsMethod = PermissionManager.class.getMethod("getPlayerOwnPermissions", UUID.class);
                 getPlayerPermissionsMethod.setAccessible(true);
-            } catch (NoSuchMethodException ignored) {}
+            } catch (NoSuchMethodException ignored) {
+            }
         }
 
         try {
             getGroupMethod = CachedGroup.class.getMethod("getGroup");
             getGroupMethod.setAccessible(true);
             superLegacy = true;
-        } catch (NoSuchMethodException ignored) {}
+        } catch (NoSuchMethodException ignored) {
+        }
 
         if (!legacy) {
             try {
@@ -117,22 +136,6 @@ public class MigrationPowerfulPerms extends SubCommand<Object> {
         }
     }
 
-
-    public MigrationPowerfulPerms() {
-        super("powerfulperms", "Migration from PowerfulPerms",
-                "/%s migration powerfulperms <address> <database> <username> <password> <db table>", MIGRATION, Predicate.not(5));
-    }
-
-    @Override
-    public CommandResult execute(LuckPermsPlugin plugin, Sender sender, Object o, List<String> args, String label) {
-        try {
-            return run(plugin, args);
-        } catch (Throwable t) {
-            t.printStackTrace();
-            return CommandResult.FAILURE;
-        }
-    }
-
     private static void getPlayerPermissions(PermissionManager manager, UUID uuid, Callback<List<Permission>> callback) {
         if (legacy) {
             try {
@@ -169,6 +172,28 @@ public class MigrationPowerfulPerms extends SubCommand<Object> {
         }
     }
 
+    public MigrationPowerfulPerms() {
+        super("powerfulperms", "Migration from PowerfulPerms", MIGRATION, Predicates.not(5),
+                Arg.list(
+                        Arg.create("address", true, "the address of the PP database"),
+                        Arg.create("database", true, "the name of the PP database"),
+                        Arg.create("username", true, "the username to log into the DB"),
+                        Arg.create("password", true, "the password to log into the DB"),
+                        Arg.create("db table", true, "the name of the PP table where player data is stored")
+                )
+        );
+    }
+
+    @Override
+    public CommandResult execute(LuckPermsPlugin plugin, Sender sender, Object o, List<String> args, String label) throws CommandException {
+        try {
+            return run(plugin, args);
+        } catch (Throwable t) {
+            t.printStackTrace();
+            return CommandResult.FAILURE;
+        }
+    }
+
     private CommandResult run(LuckPermsPlugin plugin, List<String> args) {
         final Logger log = plugin.getLog();
         if (!plugin.isPluginLoaded("PowerfulPerms")) {
@@ -242,11 +267,11 @@ public class MigrationPowerfulPerms extends SubCommand<Object> {
         log.info("PowerfulPerms Migration: Starting group migration.");
         Map<Integer, Group> groups = pm.getGroups(); // All versions
         for (Group g : groups.values()) {
-            plugin.getDatastore().createAndLoadGroup(g.getName().toLowerCase());
-            final me.lucko.luckperms.groups.Group group = plugin.getGroupManager().get(g.getName().toLowerCase());
+            plugin.getStorage().createAndLoadGroup(g.getName().toLowerCase()).join();
+            final me.lucko.luckperms.common.core.model.Group group = plugin.getGroupManager().getIfLoaded(g.getName().toLowerCase());
             try {
                 LogEntry.build()
-                        .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                        .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                         .acted(group).action("create")
                         .build().submit(plugin);
             } catch (Exception ex) {
@@ -261,7 +286,7 @@ public class MigrationPowerfulPerms extends SubCommand<Object> {
                 try {
                     group.setPermission("group." + parent.getName().toLowerCase(), true);
                     LogEntry.build()
-                            .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                            .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                             .acted(group).action("setinherit " + parent.getName().toLowerCase()) // All versions
                             .build().submit(plugin);
                 } catch (Exception ex) {
@@ -271,7 +296,7 @@ public class MigrationPowerfulPerms extends SubCommand<Object> {
                 }
             }
 
-            plugin.getDatastore().saveGroup(group);
+            plugin.getStorage().saveGroup(group);
         }
         log.info("PowerfulPerms Migration: Group migration complete.");
 
@@ -284,7 +309,7 @@ public class MigrationPowerfulPerms extends SubCommand<Object> {
             progress.put(uuid, new CountDownLatch(2));
 
             // Create a LuckPerms user for the UUID
-            plugin.getDatastore().loadUser(uuid, "null");
+            plugin.getStorage().loadUser(uuid, "null").join();
             User user = plugin.getUserManager().get(uuid);
 
             // Get a list of Permissions held by the user from the PP API.
@@ -295,7 +320,7 @@ public class MigrationPowerfulPerms extends SubCommand<Object> {
                 synchronized (progress) {
                     progress.get(uuid).countDown();
                     if (progress.get(uuid).getCount() == 0) {
-                        plugin.getDatastore().saveUser(user);
+                        plugin.getStorage().saveUser(user);
                         plugin.getUserManager().cleanup(user);
                     }
                 }
@@ -328,7 +353,7 @@ public class MigrationPowerfulPerms extends SubCommand<Object> {
                                             try {
                                                 user.setPermission("group." + g.getName().toLowerCase(), true);
                                                 LogEntry.build()
-                                                        .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                                                        .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                                                         .acted(user).action("addgroup " + g.getName().toLowerCase())
                                                         .build().submit(plugin);
                                             } catch (Exception ex) {
@@ -340,7 +365,7 @@ public class MigrationPowerfulPerms extends SubCommand<Object> {
                                             try {
                                                 user.setPermission("group." + g.getName().toLowerCase(), true, server);
                                                 LogEntry.build()
-                                                        .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                                                        .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                                                         .acted(user).action("addgroup " + g.getName().toLowerCase() + " " + server)
                                                         .build().submit(plugin);
                                             } catch (Exception ex) {
@@ -361,7 +386,7 @@ public class MigrationPowerfulPerms extends SubCommand<Object> {
                                             try {
                                                 user.setPermission("group." + group.getName().toLowerCase(), true, g.getExpirationDate().getTime() / 1000L);
                                                 LogEntry.build()
-                                                        .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                                                        .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                                                         .acted(user).action("addtempgroup " + group.getName().toLowerCase() + " " + g.getExpirationDate().getTime() / 1000L)
                                                         .build().submit(plugin);
                                             } catch (Exception ex) {
@@ -373,7 +398,7 @@ public class MigrationPowerfulPerms extends SubCommand<Object> {
                                             try {
                                                 user.setPermission("group." + group.getName().toLowerCase(), true, server, g.getExpirationDate().getTime() / 1000L);
                                                 LogEntry.build()
-                                                        .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                                                        .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                                                         .acted(user).action("addtempgroup " + group.getName().toLowerCase() + " " + g.getExpirationDate().getTime() / 1000L + " " + server)
                                                         .build().submit(plugin);
                                             } catch (Exception ex) {
@@ -388,7 +413,7 @@ public class MigrationPowerfulPerms extends SubCommand<Object> {
                                             try {
                                                 user.setPermission("group." + group.getName().toLowerCase(), true);
                                                 LogEntry.build()
-                                                        .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                                                        .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                                                         .acted(user).action("addgroup " + group.getName().toLowerCase())
                                                         .build().submit(plugin);
                                             } catch (Exception ex) {
@@ -400,7 +425,7 @@ public class MigrationPowerfulPerms extends SubCommand<Object> {
                                             try {
                                                 user.setPermission("group." + group.getName().toLowerCase(), true, server);
                                                 LogEntry.build()
-                                                        .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                                                        .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                                                         .acted(user).action("addgroup " + group.getName().toLowerCase() + " " + server)
                                                         .build().submit(plugin);
                                             } catch (Exception ex) {
@@ -418,7 +443,7 @@ public class MigrationPowerfulPerms extends SubCommand<Object> {
                 synchronized (progress) {
                     progress.get(uuid).countDown();
                     if (progress.get(uuid).getCount() == 0) {
-                        plugin.getDatastore().saveUser(user);
+                        plugin.getStorage().saveUser(user);
                         plugin.getUserManager().cleanup(user);
                     }
                 }
@@ -524,7 +549,7 @@ public class MigrationPowerfulPerms extends SubCommand<Object> {
                 try {
                     holder.setPermission(node, value, server, world);
                     LogEntry.build()
-                            .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                            .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                             .acted(holder).action("set " + node + " " + value + " " + server + " " + world)
                             .build().submit(plugin);
                 } catch (Exception ex) {
@@ -536,7 +561,7 @@ public class MigrationPowerfulPerms extends SubCommand<Object> {
                 try {
                     holder.setPermission(node, value, server, world, expireAt);
                     LogEntry.build()
-                            .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                            .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                             .acted(holder).action("settemp " + node + " " + value + " " + expireAt + " " + server + " " + world)
                             .build().submit(plugin);
                 } catch (Exception ex) {
@@ -551,7 +576,7 @@ public class MigrationPowerfulPerms extends SubCommand<Object> {
                 try {
                     holder.setPermission(node, value, server);
                     LogEntry.build()
-                            .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                            .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                             .acted(holder).action("set " + node + " " + value + " " + server)
                             .build().submit(plugin);
                 } catch (Exception ex) {
@@ -563,7 +588,7 @@ public class MigrationPowerfulPerms extends SubCommand<Object> {
                 try {
                     holder.setPermission(node, value, server, expireAt);
                     LogEntry.build()
-                            .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                            .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                             .acted(holder).action("settemp " + node + " " + value + " " + expireAt + " " + server)
                             .build().submit(plugin);
                 } catch (Exception ex) {
@@ -577,7 +602,7 @@ public class MigrationPowerfulPerms extends SubCommand<Object> {
                 try {
                     holder.setPermission(node, value);
                     LogEntry.build()
-                            .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                            .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                             .acted(holder).action("set " + node + " " + value)
                             .build().submit(plugin);
                 } catch (Exception ex) {
@@ -589,7 +614,7 @@ public class MigrationPowerfulPerms extends SubCommand<Object> {
                 try {
                     holder.setPermission(node, value, expireAt);
                     LogEntry.build()
-                            .actor(Constants.getConsoleUUID()).actorName(Constants.getConsoleName())
+                            .actor(Constants.CONSOLE_UUID).actorName(Constants.CONSOLE_NAME)
                             .acted(holder).action("settemp " + node + " " + value + " " + expireAt)
                             .build().submit(plugin);
                 } catch (Exception ex) {

bukkit/src/main/java/me/lucko/luckperms/bukkit/migration/MigrationZPermissions.java

@@ -0,0 +1,169 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.bukkit.migration;
+
+import me.lucko.luckperms.api.Logger;
+import me.lucko.luckperms.common.LuckPermsPlugin;
+import me.lucko.luckperms.common.commands.CommandException;
+import me.lucko.luckperms.common.commands.CommandResult;
+import me.lucko.luckperms.common.commands.SubCommand;
+import me.lucko.luckperms.common.commands.sender.Sender;
+import me.lucko.luckperms.common.constants.Permission;
+import me.lucko.luckperms.common.core.NodeFactory;
+import me.lucko.luckperms.common.core.model.Group;
+import me.lucko.luckperms.common.core.model.PermissionHolder;
+import me.lucko.luckperms.common.core.model.Track;
+import me.lucko.luckperms.common.core.model.User;
+import me.lucko.luckperms.common.utils.Predicates;
+import me.lucko.luckperms.exceptions.ObjectAlreadyHasException;
+
+import org.tyrannyofheaven.bukkit.zPermissions.ZPermissionsService;
+import org.tyrannyofheaven.bukkit.zPermissions.dao.PermissionService;
+import org.tyrannyofheaven.bukkit.zPermissions.model.EntityMetadata;
+import org.tyrannyofheaven.bukkit.zPermissions.model.Entry;
+import org.tyrannyofheaven.bukkit.zPermissions.model.Inheritance;
+import org.tyrannyofheaven.bukkit.zPermissions.model.Membership;
+import org.tyrannyofheaven.bukkit.zPermissions.model.PermissionEntity;
+
+import java.lang.reflect.Field;
+import java.util.List;
+import java.util.UUID;
+
+public class MigrationZPermissions extends SubCommand<Object> {
+
+    public MigrationZPermissions() {
+        super("zpermissions", "Migration from zPermissions", Permission.MIGRATION, Predicates.alwaysFalse(), null);
+    }
+
+    @Override
+    public CommandResult execute(LuckPermsPlugin plugin, Sender sender, Object o, List<String> args, String label) throws CommandException {
+        final Logger log = plugin.getLog();
+        if (!plugin.isPluginLoaded("zPermissions")) {
+            log.severe("zPermissions Migration: Error -> zPermissions is not loaded.");
+            return CommandResult.STATE_ERROR;
+        }
+
+        ZPermissionsService service = (ZPermissionsService) plugin.getService(ZPermissionsService.class);
+        if (service == null) {
+            log.severe("zPermissions Migration: Error -> zPermissions is not loaded.");
+            return CommandResult.STATE_ERROR;
+        }
+
+        PermissionService internalService;
+
+        try {
+            Field psField = service.getClass().getDeclaredField("permissionService");
+            psField.setAccessible(true);
+            internalService = (PermissionService) psField.get(service);
+        } catch (Exception e) {
+            e.printStackTrace();
+            return CommandResult.FAILURE;
+        }
+
+        // Migrate all groups
+        log.info("zPermissions Migration: Starting group migration.");
+        for (String g : service.getAllGroups()) {
+            plugin.getStorage().createAndLoadGroup(g.toLowerCase()).join();
+            Group group = plugin.getGroupManager().getIfLoaded(g.toLowerCase());
+
+            PermissionEntity entity = internalService.getEntity(g, null, true);
+            migrateEntity(group, entity, null);
+
+            plugin.getStorage().saveGroup(group);
+        }
+
+        // Migrate all tracks
+        log.info("zPermissions Migration: Starting track migration.");
+        for (String t : service.getAllTracks()) {
+            plugin.getStorage().createAndLoadTrack(t.toLowerCase()).join();
+            Track track = plugin.getTrackManager().getIfLoaded(t.toLowerCase());
+            track.setGroups(service.getTrackGroups(t));
+            plugin.getStorage().saveTrack(track);
+        }
+
+        // Migrate all users.
+        log.info("zPermissions Migration: Starting user migration.");
+        for (UUID u : service.getAllPlayersUUID()) {
+            plugin.getStorage().loadUser(u, "null").join();
+            User user = plugin.getUserManager().get(u);
+
+            PermissionEntity entity = internalService.getEntity(null, u, false);
+            migrateEntity(user, entity, internalService.getGroups(u));
+
+            user.setPrimaryGroup(service.getPlayerPrimaryGroup(u));
+
+            if (!entity.isGroup()) {
+                user.setName(entity.getDisplayName());
+            }
+
+            plugin.getUserManager().cleanup(user);
+            plugin.getStorage().saveUser(user);
+        }
+
+        log.info("zPermissions Migration: Success! Completed without any errors.");
+        return CommandResult.SUCCESS;
+    }
+
+    private void migrateEntity(PermissionHolder group, PermissionEntity entity, List<Membership> memberships) {
+        for (Entry e : entity.getPermissions()) {
+            if (e.getWorld() != null) {
+                try {
+                    group.setPermission(e.getPermission(), true, "global", e.getWorld().getName());
+                } catch (ObjectAlreadyHasException ignored) {
+                }
+            } else {
+                try {
+                    group.setPermission(e.getPermission(), true); // TODO handle negated.
+                } catch (ObjectAlreadyHasException ignored) {
+                }
+            }
+        }
+
+        if (entity.isGroup()) {
+            for (Inheritance inheritance : entity.getInheritancesAsChild()) {
+                try {
+                    if (!inheritance.getParent().getName().equals(group.getObjectName())) {
+                        group.setPermission("group." + inheritance.getParent().getName(), true);
+                    }
+                } catch (ObjectAlreadyHasException ignored) {
+                }
+            }
+        } else {
+            // entity.getMemberships() doesn't work (always returns 0 records)
+            for (Membership membership : memberships) {
+                try {
+                    group.setPermission("group." + membership.getGroup().getDisplayName(), true);
+                } catch (ObjectAlreadyHasException ignored) {
+                }
+            }
+        }
+
+        for (EntityMetadata metadata : entity.getMetadata()) {
+            try {
+                group.setPermission(NodeFactory.makeMetaNode(metadata.getName(), metadata.getStringValue()).build());
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+        }
+    }
+}

bukkit/src/main/java/me/lucko/luckperms/bukkit/migration/utils/LPResultRunnable.java

@@ -20,12 +20,13 @@
  *  SOFTWARE.
  */
 
-package me.lucko.luckperms.commands.migration.subcommands.utils;
+package me.lucko.luckperms.bukkit.migration.utils;
 
 import com.github.cheesesoftware.PowerfulPermsAPI.ResultRunnable;
 
 /**
  * Overrides the default ResultRunnable, callbacks will always run in the same thread. (an async one, hopefully.)
+ *
  * @param <T> type
  */
 public abstract class LPResultRunnable<T> extends ResultRunnable<T> {

bukkit/src/main/java/me/lucko/luckperms/bukkit/model/ChildPermissionProvider.java

@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.bukkit.model;
+
+import lombok.Getter;
+
+import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.Maps;
+
+import org.bukkit.Bukkit;
+import org.bukkit.permissions.Permission;
+
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+
+public class ChildPermissionProvider {
+
+    private static void resolveChildren(Map<String, Boolean> accumulator, Map<String, Boolean> children, boolean invert) {
+        for (Map.Entry<String, Boolean> e : children.entrySet()) {
+            if (accumulator.containsKey(e.getKey())) {
+                continue; // Prevent infinite loops
+            }
+
+            Permission perm = Bukkit.getServer().getPluginManager().getPermission(e.getKey());
+            boolean value = e.getValue() ^ invert;
+            String lName = e.getKey().toLowerCase();
+
+            accumulator.put(lName, value);
+
+            if (perm != null) {
+                resolveChildren(accumulator, perm.getChildren(), !value);
+            }
+        }
+    }
+
+    @Getter
+    private ImmutableMap<Map.Entry<String, Boolean>, ImmutableMap<String, Boolean>> permissions = ImmutableMap.of();
+
+    public void setup() {
+        Map<Map.Entry<String, Boolean>, ImmutableMap<String, Boolean>> permissions = new HashMap<>();
+
+        for (Permission permission : Bukkit.getServer().getPluginManager().getPermissions()) {
+            // handle true
+            Map<String, Boolean> children = new HashMap<>();
+            resolveChildren(children, Collections.singletonMap(permission.getName(), true), false);
+            permissions.put(Maps.immutableEntry(permission.getName().toLowerCase(), true), ImmutableMap.copyOf(children));
+
+            // handle false
+            Map<String, Boolean> nChildren = new HashMap<>();
+            resolveChildren(nChildren, Collections.singletonMap(permission.getName(), false), false);
+            permissions.put(Maps.immutableEntry(permission.getName().toLowerCase(), false), ImmutableMap.copyOf(nChildren));
+        }
+
+        this.permissions = ImmutableMap.copyOf(permissions);
+    }
+}

bukkit/src/main/java/me/lucko/luckperms/bukkit/model/DefaultsProvider.java

@@ -0,0 +1,201 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.bukkit.model;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+import com.google.common.collect.ImmutableMap;
+
+import me.lucko.luckperms.api.Tristate;
+
+import org.bukkit.Bukkit;
+import org.bukkit.permissions.Permissible;
+import org.bukkit.permissions.Permission;
+import org.bukkit.permissions.PermissionAttachment;
+import org.bukkit.permissions.PermissionAttachmentInfo;
+import org.bukkit.plugin.Plugin;
+
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Set;
+
+public class DefaultsProvider {
+
+    private static void unregisterDefaults(Map<String, Boolean> map, DummyPermissible p) {
+        Set<String> perms = map.keySet();
+
+        for (String name : perms) {
+            Bukkit.getServer().getPluginManager().unsubscribeFromPermission(name, p);
+        }
+
+        Bukkit.getServer().getPluginManager().unsubscribeFromDefaultPerms(false, p);
+        Bukkit.getServer().getPluginManager().unsubscribeFromDefaultPerms(true, p);
+    }
+
+    private static void calculateDefaults(Map<String, Boolean> map, DummyPermissible p, boolean op) {
+        Set<Permission> defaults = Bukkit.getServer().getPluginManager().getDefaultPermissions(op);
+        Bukkit.getServer().getPluginManager().subscribeToDefaultPerms(op, p);
+
+        for (Permission perm : defaults) {
+            String name = perm.getName().toLowerCase();
+            map.put(name, true);
+            Bukkit.getServer().getPluginManager().subscribeToPermission(name, p);
+            calculateChildPermissions(map, p, perm.getChildren(), false);
+        }
+    }
+
+    private static void calculateChildPermissions(Map<String, Boolean> map, DummyPermissible p, Map<String, Boolean> children, boolean invert) {
+        for (Map.Entry<String, Boolean> e : children.entrySet()) {
+            Permission perm = Bukkit.getServer().getPluginManager().getPermission(e.getKey());
+            boolean value = e.getValue() ^ invert;
+            String lName = e.getKey().toLowerCase();
+
+            map.put(lName, value);
+            Bukkit.getServer().getPluginManager().subscribeToPermission(e.getKey(), p);
+
+            if (perm != null) {
+                calculateChildPermissions(map, p, perm.getChildren(), !value);
+            }
+        }
+    }
+
+    @Getter
+    private Map<String, Boolean> opDefaults = ImmutableMap.of();
+    private final DummyPermissible opDummy = new DummyPermissible(this::refreshOp);
+    
+    @Getter
+    private Map<String, Boolean> nonOpDefaults = ImmutableMap.of();
+    private final DummyPermissible nonOpDummy = new DummyPermissible(this::refreshNonOp);
+
+    public void refresh() {
+        refreshOp();
+        refreshNonOp();
+    }
+
+    private void refreshOp() {
+        unregisterDefaults(opDefaults, opDummy);
+
+        Map<String, Boolean> builder = new HashMap<>();
+        calculateDefaults(builder, opDummy, true);
+
+        opDefaults = ImmutableMap.copyOf(builder);
+    }
+
+    private void refreshNonOp() {
+        unregisterDefaults(nonOpDefaults, nonOpDummy);
+
+        Map<String, Boolean> builder = new HashMap<>();
+        calculateDefaults(builder, nonOpDummy, false);
+
+        nonOpDefaults = ImmutableMap.copyOf(builder);
+    }
+
+    public void close() {
+        unregisterDefaults(opDefaults, opDummy);
+        unregisterDefaults(nonOpDefaults, nonOpDummy);
+    }
+
+    public Tristate hasDefault(String permission, boolean isOp) {
+        Map<String, Boolean> map = isOp ? opDefaults : nonOpDefaults;
+
+        Boolean b = map.get(permission);
+        return b == null ? Tristate.UNDEFINED : Tristate.fromBoolean(b);
+    }
+
+    public int size() {
+        return opDefaults.size() + nonOpDefaults.size();
+    }
+
+    @AllArgsConstructor
+    private static class DummyPermissible implements Permissible {
+        private final Runnable onRefresh;
+
+        @Override
+        public void recalculatePermissions() {
+            onRefresh.run();
+        }
+
+        @Override
+        public Set<PermissionAttachmentInfo> getEffectivePermissions() {
+            return Collections.emptySet();
+        }
+
+        @Override
+        public boolean isPermissionSet(String name) {
+            return false;
+        }
+
+        @Override
+        public boolean isPermissionSet(Permission perm) {
+            return false;
+        }
+
+        @Override
+        public boolean hasPermission(String name) {
+            return false;
+        }
+
+        @Override
+        public boolean hasPermission(Permission perm) {
+            return false;
+        }
+
+        @Override
+        public PermissionAttachment addAttachment(Plugin plugin, String name, boolean value) {
+            return null;
+        }
+
+        @Override
+        public PermissionAttachment addAttachment(Plugin plugin) {
+            return null;
+        }
+
+        @Override
+        public PermissionAttachment addAttachment(Plugin plugin, String name, boolean value, int ticks) {
+            return null;
+        }
+
+        @Override
+        public PermissionAttachment addAttachment(Plugin plugin, int ticks) {
+            return null;
+        }
+
+        @Override
+        public void removeAttachment(PermissionAttachment attachment) {
+
+        }
+
+        @Override
+        public boolean isOp() {
+            return false;
+        }
+
+        @Override
+        public void setOp(boolean value) {
+
+        }
+    }
+
+}

bukkit/src/main/java/me/lucko/luckperms/bukkit/model/LPPermissible.java

@@ -20,23 +20,33 @@
  *  SOFTWARE.
  */
 
-package me.lucko.luckperms.inject;
+package me.lucko.luckperms.bukkit.model;
 
-import lombok.AllArgsConstructor;
 import lombok.Getter;
 import lombok.NonNull;
-import me.lucko.luckperms.LuckPermsPlugin;
+import lombok.Setter;
+
+import me.lucko.luckperms.api.Contexts;
 import me.lucko.luckperms.api.Tristate;
-import me.lucko.luckperms.utils.PermissionCalculator;
-import me.lucko.luckperms.utils.PermissionProcessor;
+import me.lucko.luckperms.bukkit.LPBukkitPlugin;
+import me.lucko.luckperms.common.core.model.User;
+
 import org.bukkit.Bukkit;
-import org.bukkit.command.CommandSender;
-import org.bukkit.permissions.*;
+import org.bukkit.entity.Player;
+import org.bukkit.permissions.PermissibleBase;
+import org.bukkit.permissions.Permission;
+import org.bukkit.permissions.PermissionAttachment;
+import org.bukkit.permissions.PermissionAttachmentInfo;
+import org.bukkit.permissions.PermissionRemovedExecutor;
 import org.bukkit.plugin.Plugin;
 
-import java.util.*;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
 import java.util.concurrent.ConcurrentHashMap;
-import java.util.function.Supplier;
 import java.util.logging.Level;
 import java.util.stream.Collectors;
 
@@ -46,40 +56,81 @@ import java.util.stream.Collectors;
 public class LPPermissible extends PermissibleBase {
 
     @Getter
-    private final CommandSender parent;
-
-    private final PermissionCalculator calculator;
+    private final User user;
 
     @Getter
-    private final Map<String, Boolean> luckPermsPermissions = new ConcurrentHashMap<>();
-    private final List<PermissionAttachment> attachments = new LinkedList<>();
-    private final Map<String, PermissionAttachmentInfo> attachmentPermissions = new HashMap<>();
+    private final Player parent;
 
-    public LPPermissible(@NonNull CommandSender sender, LuckPermsPlugin plugin) {
-        super(sender);
-        this.parent = sender;
+    @Getter
+    private final LPBukkitPlugin plugin;
 
-        List<PermissionProcessor> processors = new ArrayList<>(5);
-        processors.add(new PermissionCalculator.MapProcessor(luckPermsPermissions));
-        processors.add(new AttachmentProcessor(attachmentPermissions));
-        if (plugin.getConfiguration().getApplyWildcards()) {
-            processors.add(new PermissionCalculator.WildcardProcessor(luckPermsPermissions));
-        }
-        if (plugin.getConfiguration().getApplyRegex()) {
-            processors.add(new PermissionCalculator.RegexProcessor(luckPermsPermissions));
-        }
-        processors.add(new BukkitDefaultsProcessor(parent::isOp));
+    @Getter
+    private final SubscriptionManager subscriptions;
 
-        calculator = new PermissionCalculator(plugin, parent.getName(), plugin.getConfiguration().getDebugPermissionChecks(), processors);
+    @Getter
+    @Setter
+    private PermissibleBase oldPermissible = null;
+
+    // Attachment stuff.
+    @Getter
+    private final Map<String, PermissionAttachmentInfo> attachmentPermissions = new ConcurrentHashMap<>();
+    @Getter
+    private final List<PermissionAttachment> attachments = Collections.synchronizedList(new LinkedList<>());
+
+    public LPPermissible(@NonNull Player parent, User user, LPBukkitPlugin plugin) {
+        super(parent);
+        this.user = user;
+        this.parent = parent;
+        this.plugin = plugin;
+        this.subscriptions = new SubscriptionManager(this);
+
+        recalculatePermissions();
     }
 
-    public void invalidateCache() {
-        calculator.invalidateCache();
+    public void updateSubscriptionsAsync() {
+        plugin.doAsync(this::updateSubscriptions);
     }
 
-    @Override
-    public boolean isOp() {
-        return parent.isOp();
+    public void updateSubscriptions() {
+        Set<String> ent = new HashSet<>(user.getUserData().getPermissionData(calculateContexts()).getImmutableBacking().keySet());
+
+        if (parent.isOp()) {
+            ent.addAll(plugin.getDefaultsProvider().getOpDefaults().keySet());
+        } else {
+            ent.addAll(plugin.getDefaultsProvider().getNonOpDefaults().keySet());
+        }
+
+        subscriptions.subscribe(ent);
+    }
+
+    public void unsubscribeFromAllAsync() {
+        plugin.doAsync(this::unsubscribeFromAll);
+    }
+
+    public void unsubscribeFromAll() {
+        subscriptions.subscribe(Collections.emptySet());
+    }
+
+    public void addAttachments(List<PermissionAttachment> attachments) {
+        for (PermissionAttachment attachment : attachments) {
+            this.attachments.add(attachment);
+        }
+    }
+
+    public Contexts calculateContexts() {
+        return new Contexts(
+                plugin.getContextManager().getApplicableContext(parent),
+                plugin.getConfiguration().isIncludingGlobalPerms(),
+                plugin.getConfiguration().isIncludingGlobalWorldPerms(),
+                true,
+                plugin.getConfiguration().isApplyingGlobalGroups(),
+                plugin.getConfiguration().isApplyingGlobalWorldGroups(),
+                parent.isOp()
+        );
+    }
+
+    private boolean hasData() {
+        return user.getUserData() != null;
     }
 
     @Override
@@ -89,7 +140,7 @@ public class LPPermissible extends PermissibleBase {
 
     @Override
     public boolean isPermissionSet(@NonNull String name) {
-        return luckPermsPermissions.containsKey(name.toLowerCase()) || attachmentPermissions.containsKey(name.toLowerCase());
+        return hasData() && user.getUserData().getPermissionData(calculateContexts()).getPermissionValue(name) != Tristate.UNDEFINED;
     }
 
     @Override
@@ -99,9 +150,11 @@ public class LPPermissible extends PermissibleBase {
 
     @Override
     public boolean hasPermission(@NonNull String name) {
-        Tristate ts = calculator.getPermissionValue(name);
-        if (ts != Tristate.UNDEFINED) {
-            return ts.asBoolean();
+        if (hasData()) {
+            Tristate ts = user.getUserData().getPermissionData(calculateContexts()).getPermissionValue(name);
+            if (ts != Tristate.UNDEFINED) {
+                return ts.asBoolean();
+            }
         }
 
         return Permission.DEFAULT_PERMISSION.getValue(isOp());
@@ -109,14 +162,32 @@ public class LPPermissible extends PermissibleBase {
 
     @Override
     public boolean hasPermission(@NonNull Permission perm) {
-        Tristate ts = calculator.getPermissionValue(perm.getName());
-        if (ts != Tristate.UNDEFINED) {
-            return ts.asBoolean();
+        if (hasData()) {
+            Tristate ts = user.getUserData().getPermissionData(calculateContexts()).getPermissionValue(perm.getName());
+            if (ts != Tristate.UNDEFINED) {
+                return ts.asBoolean();
+            }
         }
 
         return perm.getDefault().getValue(isOp());
     }
 
+    @Override
+    public Set<PermissionAttachmentInfo> getEffectivePermissions() {
+        Set<PermissionAttachmentInfo> perms = new HashSet<>();
+        perms.addAll(attachmentPermissions.values());
+
+        if (hasData()) {
+            perms.addAll(
+                    user.getUserData().getPermissionData(calculateContexts()).getImmutableBacking().entrySet().stream()
+                            .map(e -> new PermissionAttachmentInfo(parent, e.getKey(), null, e.getValue()))
+                            .collect(Collectors.toList())
+            );
+        }
+
+        return perms;
+    }
+
     @Override
     public PermissionAttachment addAttachment(@NonNull Plugin plugin, @NonNull String name, boolean value) {
         if (!plugin.isEnabled()) {
@@ -166,7 +237,7 @@ public class LPPermissible extends PermissibleBase {
         }
 
         PermissionAttachment result = addAttachment(plugin);
-        if (Bukkit.getServer().getScheduler().scheduleSyncDelayedTask(plugin, new RemoveAttachmentRunnable(result), ticks) == -1) {
+        if (Bukkit.getServer().getScheduler().scheduleSyncDelayedTask(plugin, result::remove, ticks) == -1) {
             Bukkit.getServer().getLogger().log(Level.WARNING, "Could not add PermissionAttachment to " + parent + " for plugin " + plugin.getDescription().getFullName() + ": Scheduler returned -1");
             result.remove();
             return null;
@@ -198,22 +269,14 @@ public class LPPermissible extends PermissibleBase {
         }
 
         attachmentPermissions.clear();
-        Set<Permission> defaults = Bukkit.getServer().getPluginManager().getDefaultPermissions(isOp());
-        Bukkit.getServer().getPluginManager().subscribeToDefaultPerms(isOp(), parent);
-
-        for (Permission perm : defaults) {
-            String name = perm.getName().toLowerCase();
-
-            attachmentPermissions.put(name, new PermissionAttachmentInfo(parent, name, null, true));
-            Bukkit.getServer().getPluginManager().subscribeToPermission(name, parent);
-            calculateChildPermissions(perm.getChildren(), false, null);
-        }
 
         for (PermissionAttachment attachment : attachments) {
             calculateChildPermissions(attachment.getPermissions(), false, attachment);
         }
 
-        invalidateCache();
+        if (hasData()) {
+            user.getUserData().invalidatePermissionCalculators();
+        }
     }
 
     @Override
@@ -244,60 +307,4 @@ public class LPPermissible extends PermissibleBase {
             }
         }
     }
-
-    @Override
-    public Set<PermissionAttachmentInfo> getEffectivePermissions() {
-        Set<PermissionAttachmentInfo> perms = new HashSet<>();
-        perms.addAll(attachmentPermissions.values());
-
-        perms.addAll(luckPermsPermissions.entrySet().stream()
-                .map(e -> new PermissionAttachmentInfo(parent, e.getKey(), null, e.getValue()))
-                .collect(Collectors.toList()));
-
-        return perms;
-    }
-
-    private class RemoveAttachmentRunnable implements Runnable {
-        private PermissionAttachment attachment;
-
-        private RemoveAttachmentRunnable(PermissionAttachment attachment) {
-            this.attachment = attachment;
-        }
-
-        public void run() {
-            attachment.remove();
-        }
-    }
-
-    @AllArgsConstructor
-    private static class AttachmentProcessor implements PermissionProcessor {
-
-        @Getter
-        private final Map<String, PermissionAttachmentInfo> map;
-
-        @Override
-        public Tristate hasPermission(String permission) {
-            if (map.containsKey(permission)) {
-                return Tristate.fromBoolean(map.get(permission).getValue());
-            }
-
-            return Tristate.UNDEFINED;
-        }
-
-    }
-
-    @AllArgsConstructor
-    private static class BukkitDefaultsProcessor implements PermissionProcessor {
-        private final Supplier<Boolean> isOp;
-
-        @Override
-        public Tristate hasPermission(String permission) {
-            Permission defPerm = Bukkit.getServer().getPluginManager().getPermission(permission);
-            if (defPerm != null) {
-                return Tristate.fromBoolean(defPerm.getDefault().getValue(isOp.get()));
-            } else {
-                return Tristate.UNDEFINED;
-            }
-        }
-    }
 }

bukkit/src/main/java/me/lucko/luckperms/bukkit/model/SubscriptionManager.java

@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.bukkit.model;
+
+import lombok.RequiredArgsConstructor;
+
+import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.Maps;
+
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+
+@RequiredArgsConstructor
+public class SubscriptionManager {
+
+    private final LPPermissible permissible;
+    private Set<String> currentSubscriptions = ImmutableSet.of();
+
+    public synchronized void subscribe(Set<String> perms) {
+        Set<String> newPerms = ImmutableSet.copyOf(perms);
+
+        Map.Entry<Set<String>, Set<String>> changes = compareSets(newPerms, currentSubscriptions);
+
+        Set<String> toAdd = changes.getKey();
+        Set<String> toRemove = changes.getValue();
+
+        permissible.getPlugin().doSync(() -> {
+            for (String s : toAdd) {
+                permissible.getPlugin().getServer().getPluginManager().subscribeToPermission(s, permissible.getParent());
+            }
+            for (String s : toRemove) {
+                permissible.getPlugin().getServer().getPluginManager().unsubscribeFromPermission(s, permissible.getParent());
+            }
+        });
+
+        this.currentSubscriptions = newPerms;
+    }
+
+    /**
+     * Compares two sets
+     * @param local the local set
+     * @param remote the remote set
+     * @return the entries to add to remote, and the entries to remove from remote
+     */
+    private static Map.Entry<Set<String>, Set<String>> compareSets(Set<String> local, Set<String> remote) {
+        // entries in local but not remote need to be added
+        // entries in remote but not local need to be removed
+
+        Set<String> toAdd = new HashSet<>(local);
+        toAdd.removeAll(remote);
+
+        Set<String> toRemove = new HashSet<>(remote);
+        toRemove.removeAll(local);
+
+        return Maps.immutableEntry(toAdd, toRemove);
+    }
+
+}

bukkit/src/main/java/me/lucko/luckperms/bukkit/vault/VaultChatHook.java

@@ -0,0 +1,395 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.bukkit.vault;
+
+import lombok.NonNull;
+
+import me.lucko.luckperms.api.Contexts;
+import me.lucko.luckperms.api.Node;
+import me.lucko.luckperms.api.caching.MetaData;
+import me.lucko.luckperms.api.context.ContextSet;
+import me.lucko.luckperms.common.core.NodeBuilder;
+import me.lucko.luckperms.common.core.NodeFactory;
+import me.lucko.luckperms.common.core.model.Group;
+import me.lucko.luckperms.common.core.model.PermissionHolder;
+import me.lucko.luckperms.common.core.model.User;
+import me.lucko.luckperms.common.utils.ExtractedContexts;
+import me.lucko.luckperms.exceptions.ObjectAlreadyHasException;
+import me.lucko.luckperms.exceptions.ObjectLacksException;
+
+import net.milkbowl.vault.chat.Chat;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+import static me.lucko.luckperms.api.MetaUtils.escapeCharacters;
+import static me.lucko.luckperms.api.MetaUtils.unescapeCharacters;
+
+/**
+ * Provides the Vault Chat service through the use of normal permission nodes.
+ *
+ * Prefixes / Suffixes:
+ * Normal inheritance rules apply.
+ * Permission Nodes = prefix.priority.value OR suffix.priority.value
+ * If a user/group has / inherits multiple prefixes and suffixes, the one with the highest priority is the one that
+ * will apply.
+ *
+ * Meta:
+ * Normal inheritance rules DO NOT apply.
+ * Permission Nodes = meta.node.value
+ *
+ * Note that special characters used within LuckPerms are escaped:
+ * See {@link me.lucko.luckperms.api.MetaUtils#unescapeCharacters(String)}
+ */
+public class VaultChatHook extends Chat {
+    private final VaultPermissionHook perms;
+
+    VaultChatHook(VaultPermissionHook perms) {
+        super(perms);
+        this.perms = perms;
+    }
+
+    public String getName() {
+        return perms.getName();
+    }
+
+    public boolean isEnabled() {
+        return perms.isEnabled();
+    }
+
+    private void setMeta(PermissionHolder holder, String world, String node, String value) {
+        String finalWorld = perms.isIgnoreWorld() ? null : world;
+        if (holder == null) return;
+        if (node.equals("")) return;
+
+        perms.log("Setting meta: '" + node + "' for " + holder.getObjectName() + " on world " + world + ", server " + perms.getServer());
+
+        perms.getScheduler().execute(() -> {
+            List<Node> toRemove = holder.getNodes().stream()
+                    .filter(n -> n.isMeta() && n.getMeta().getKey().equals(node))
+                    .collect(Collectors.toList());
+
+            toRemove.forEach(n -> {
+                try {
+                    holder.unsetPermission(n);
+                } catch (ObjectLacksException ignored) {
+                }
+            });
+
+            Node.Builder metaNode = NodeFactory.makeMetaNode(node, value).setValue(true);
+            if (!perms.getServer().equalsIgnoreCase("global")) {
+                metaNode.setServer(perms.getServer());
+            }
+            if (finalWorld != null && !finalWorld.equals("")) {
+                metaNode.setServer(perms.getServer()).setWorld(finalWorld);
+            }
+
+            try {
+                holder.setPermission(metaNode.build());
+            } catch (ObjectAlreadyHasException ignored) {
+            }
+
+            perms.save(holder);
+        });
+    }
+
+    private void setChatMeta(boolean prefix, PermissionHolder holder, String value, String world) {
+        String finalWorld = perms.isIgnoreWorld() ? null : world;
+        if (holder == null) return;
+        if (value.equals("")) return;
+
+        perms.log("Setting " + (prefix ? "prefix" : "suffix") + " for " + holder.getObjectName() + " on world " + world + ", server " + perms.getServer());
+
+        perms.getScheduler().execute(() -> {
+            Node.Builder node = new NodeBuilder((prefix ? "prefix" : "suffix") + ".1000." + escapeCharacters(value));
+            node.setValue(true);
+            if (!perms.getServer().equalsIgnoreCase("global")) {
+                node.setServer(perms.getServer());
+            }
+
+            if (finalWorld != null && !finalWorld.equals("")) {
+                node.setServer(perms.getServer()).setWorld(finalWorld);
+            }
+
+            try {
+                holder.setPermission(node.build());
+            } catch (ObjectAlreadyHasException ignored) {
+            }
+
+            perms.save(holder);
+        });
+    }
+
+    private String getUserMeta(User user, String world, String node, String defaultValue) {
+        if (user == null) return defaultValue;
+        world = perms.isIgnoreWorld() ? null : world;
+        node = escapeCharacters(node);
+
+        perms.log("Getting meta: '" + node + "' for user " + user.getName() + " on world " + world + ", server " + perms.getServer());
+
+        if (user.getUserData() == null) {
+            return defaultValue;
+        }
+
+        return unescapeCharacters(user.getUserData().getMetaData(perms.createContextForWorld(world)).getMeta().getOrDefault(node, defaultValue));
+    }
+
+    private String getUserChatMeta(boolean prefix, User user, String world) {
+        if (user == null) return "";
+        world = perms.isIgnoreWorld() ? null : world;
+
+        perms.log("Getting " + (prefix ? "prefix" : "suffix") + " for user " + user.getName() + " on world " + world + ", server " + perms.getServer());
+
+        if (user.getUserData() == null) {
+            return "";
+        }
+
+        MetaData data = user.getUserData().getMetaData(perms.createContextForWorld(world));
+        String v = prefix ? data.getPrefix() : data.getSuffix();
+        return v == null ? "" : unescapeCharacters(v);
+    }
+
+    private String getGroupMeta(Group group, String world, String node, String defaultValue) {
+        world = perms.isIgnoreWorld() ? null : world;
+        if (group == null) return defaultValue;
+        if (node.equals("")) return defaultValue;
+        node = escapeCharacters(node);
+
+        perms.log("Getting meta: '" + node + "' for group " + group.getName() + " on world " + world + ", server " + perms.getServer());
+
+        for (Node n : group.getPermissions(true)) {
+            if (!n.getValue()) {
+                continue;
+            }
+
+            if (!n.isMeta()) {
+                continue;
+            }
+
+            if (!n.shouldApplyOnServer(perms.getServer(), perms.isIncludeGlobal(), false)) {
+                continue;
+            }
+
+            if (!n.shouldApplyOnWorld(world, perms.isIncludeGlobal(), false)) {
+                continue;
+            }
+
+            Map.Entry<String, String> meta = n.getMeta();
+            if (meta.getKey().equalsIgnoreCase(node)) {
+                return unescapeCharacters(meta.getValue());
+            }
+        }
+
+        return defaultValue;
+    }
+
+    private String getGroupChatMeta(boolean prefix, Group group, String world) {
+        world = perms.isIgnoreWorld() ? null : world;
+        if (group == null) return "";
+
+        perms.log("Getting " + (prefix ? "prefix" : "suffix") + " for group " + group + " on world " + world + ", server " + perms.getServer());
+
+        int priority = Integer.MIN_VALUE;
+        String meta = null;
+
+        Map<String, String> context = new HashMap<>();
+        context.put("server", perms.getServer());
+        if (world != null) {
+            context.put("world", world);
+        }
+
+        ExtractedContexts ec = ExtractedContexts.generate(new Contexts(ContextSet.fromMap(context), perms.isIncludeGlobal(), true, true, true, true, false));
+        for (Node n : group.getAllNodes(null, ec)) {
+            if (!n.getValue()) {
+                continue;
+            }
+
+            if (prefix ? !n.isPrefix() : !n.isSuffix()) {
+                continue;
+            }
+
+            if (!n.shouldApplyOnServer(perms.getServer(), perms.isIncludeGlobal(), false)) {
+                continue;
+            }
+
+            if (!n.shouldApplyOnWorld(world, perms.isIncludeGlobal(), false)) {
+                continue;
+            }
+
+            Map.Entry<Integer, String> value = prefix ? n.getPrefix() : n.getSuffix();
+            if (value.getKey() > priority) {
+                meta = value.getValue();
+                priority = value.getKey();
+            }
+        }
+
+        return meta == null ? "" : unescapeCharacters(meta);
+    }
+
+    public String getPlayerPrefix(String world, @NonNull String player) {
+        final User user = perms.getPlugin().getUserManager().getByUsername(player);
+        return getUserChatMeta(true, user, world);
+    }
+
+    public void setPlayerPrefix(String world, @NonNull String player, @NonNull String prefix) {
+        final User user = perms.getPlugin().getUserManager().getByUsername(player);
+        setChatMeta(true, user, prefix, world);
+    }
+
+    public String getPlayerSuffix(String world, @NonNull String player) {
+        final User user = perms.getPlugin().getUserManager().getByUsername(player);
+        return getUserChatMeta(false, user, world);
+    }
+
+    public void setPlayerSuffix(String world, @NonNull String player, @NonNull String suffix) {
+        final User user = perms.getPlugin().getUserManager().getByUsername(player);
+        setChatMeta(false, user, suffix, world);
+    }
+
+    public String getGroupPrefix(String world, @NonNull String group) {
+        final Group g = perms.getPlugin().getGroupManager().getIfLoaded(group);
+        return getGroupChatMeta(true, g, world);
+    }
+
+    public void setGroupPrefix(String world, @NonNull String group, @NonNull String prefix) {
+        final Group g = perms.getPlugin().getGroupManager().getIfLoaded(group);
+        setChatMeta(true, g, prefix, world);
+    }
+
+    public String getGroupSuffix(String world, @NonNull String group) {
+        final Group g = perms.getPlugin().getGroupManager().getIfLoaded(group);
+        return getGroupChatMeta(false, g, world);
+    }
+
+    public void setGroupSuffix(String world, @NonNull String group, @NonNull String suffix) {
+        final Group g = perms.getPlugin().getGroupManager().getIfLoaded(group);
+        setChatMeta(false, g, suffix, world);
+    }
+
+    public int getPlayerInfoInteger(String world, @NonNull String player, @NonNull String node, int defaultValue) {
+        final User user = perms.getPlugin().getUserManager().getByUsername(player);
+        try {
+            return Integer.parseInt(getUserMeta(user, world, node, String.valueOf(defaultValue)));
+        } catch (NumberFormatException e) {
+            return defaultValue;
+        }
+    }
+
+    public void setPlayerInfoInteger(String world, @NonNull String player, @NonNull String node, int value) {
+        final User user = perms.getPlugin().getUserManager().getByUsername(player);
+        setMeta(user, world, node, String.valueOf(value));
+    }
+
+    public int getGroupInfoInteger(String world, @NonNull String group, @NonNull String node, int defaultValue) {
+        final Group g = perms.getPlugin().getGroupManager().getIfLoaded(group);
+        try {
+            return Integer.parseInt(getGroupMeta(g, world, node, String.valueOf(defaultValue)));
+        } catch (NumberFormatException e) {
+            return defaultValue;
+        }
+    }
+
+    public void setGroupInfoInteger(String world, @NonNull String group, @NonNull String node, int value) {
+        final Group g = perms.getPlugin().getGroupManager().getIfLoaded(group);
+        setMeta(g, world, node, String.valueOf(value));
+    }
+
+    public double getPlayerInfoDouble(String world, @NonNull String player, @NonNull String node, double defaultValue) {
+        final User user = perms.getPlugin().getUserManager().getByUsername(player);
+        try {
+            return Double.parseDouble(getUserMeta(user, world, node, String.valueOf(defaultValue)));
+        } catch (NumberFormatException e) {
+            return defaultValue;
+        }
+    }
+
+    public void setPlayerInfoDouble(String world, @NonNull String player, @NonNull String node, double value) {
+        final User user = perms.getPlugin().getUserManager().getByUsername(player);
+        setMeta(user, world, node, String.valueOf(value));
+    }
+
+    public double getGroupInfoDouble(String world, @NonNull String group, @NonNull String node, double defaultValue) {
+        final Group g = perms.getPlugin().getGroupManager().getIfLoaded(group);
+        try {
+            return Double.parseDouble(getGroupMeta(g, world, node, String.valueOf(defaultValue)));
+        } catch (NumberFormatException e) {
+            return defaultValue;
+        }
+    }
+
+    public void setGroupInfoDouble(String world, @NonNull String group, @NonNull String node, double value) {
+        final Group g = perms.getPlugin().getGroupManager().getIfLoaded(group);
+        setMeta(g, world, node, String.valueOf(value));
+    }
+
+    public boolean getPlayerInfoBoolean(String world, @NonNull String player, @NonNull String node, boolean defaultValue) {
+        final User user = perms.getPlugin().getUserManager().getByUsername(player);
+        String s = getUserMeta(user, world, node, String.valueOf(defaultValue));
+        if (!s.equalsIgnoreCase("true") && !s.equalsIgnoreCase("false")) {
+            return defaultValue;
+        }
+        return Boolean.parseBoolean(s);
+    }
+
+    public void setPlayerInfoBoolean(String world, @NonNull String player, @NonNull String node, boolean value) {
+        final User user = perms.getPlugin().getUserManager().getByUsername(player);
+        setMeta(user, world, node, String.valueOf(value));
+    }
+
+    public boolean getGroupInfoBoolean(String world, @NonNull String group, @NonNull String node, boolean defaultValue) {
+        final Group g = perms.getPlugin().getGroupManager().getIfLoaded(group);
+        String s = getGroupMeta(g, world, node, String.valueOf(defaultValue));
+        if (!s.equalsIgnoreCase("true") && !s.equalsIgnoreCase("false")) {
+            return defaultValue;
+        }
+        return Boolean.parseBoolean(s);
+    }
+
+    public void setGroupInfoBoolean(String world, @NonNull String group, @NonNull String node, boolean value) {
+        final Group g = perms.getPlugin().getGroupManager().getIfLoaded(group);
+        setMeta(g, world, node, String.valueOf(value));
+    }
+
+    public String getPlayerInfoString(String world, @NonNull String player, @NonNull String node, String defaultValue) {
+        final User user = perms.getPlugin().getUserManager().getByUsername(player);
+        return getUserMeta(user, world, node, defaultValue);
+    }
+
+    public void setPlayerInfoString(String world, @NonNull String player, @NonNull String node, String value) {
+        final User user = perms.getPlugin().getUserManager().getByUsername(player);
+        setMeta(user, world, node, value);
+    }
+
+    public String getGroupInfoString(String world, @NonNull String group, @NonNull String node, String defaultValue) {
+        final Group g = perms.getPlugin().getGroupManager().getIfLoaded(group);
+        return getGroupMeta(g, world, node, defaultValue);
+    }
+
+    public void setGroupInfoString(String world, @NonNull String group, @NonNull String node, String value) {
+        final Group g = perms.getPlugin().getGroupManager().getIfLoaded(group);
+        setMeta(g, world, node, value);
+    }
+
+}

bukkit/src/main/java/me/lucko/luckperms/bukkit/vault/VaultHook.java

@@ -20,42 +20,60 @@
  *  SOFTWARE.
  */
 
-package me.lucko.luckperms.api.vault;
+package me.lucko.luckperms.bukkit.vault;
+
+import lombok.Getter;
+
+import me.lucko.luckperms.bukkit.LPBukkitPlugin;
 
-import me.lucko.luckperms.LPBukkitPlugin;
 import net.milkbowl.vault.chat.Chat;
 import net.milkbowl.vault.permission.Permission;
+
 import org.bukkit.plugin.ServicePriority;
 import org.bukkit.plugin.ServicesManager;
 
+/**
+ * Handles hooking with the Vault API
+ */
+@Getter
 public class VaultHook {
+    private VaultChatHook chatHook = null;
+    private VaultPermissionHook permissionHook = null;
 
-    private static VaultChatHook chatHook = null;
-    private static VaultPermissionHook permissionHook = null;
-
-    public static void hook(LPBukkitPlugin plugin) {
+    public void hook(LPBukkitPlugin plugin) {
         try {
             if (permissionHook == null) {
-                permissionHook = new VaultPermissionHook();
+                permissionHook = new VaultPermissionHook(plugin);
             }
-            permissionHook.setPlugin(plugin);
-            permissionHook.setServer(plugin.getConfiguration().getVaultServer());
-            permissionHook.setIncludeGlobal(plugin.getConfiguration().getVaultIncludeGlobal());
 
             if (chatHook == null) {
                 chatHook = new VaultChatHook(permissionHook);
             }
-            chatHook.setPlugin(plugin);
 
             final ServicesManager sm = plugin.getServer().getServicesManager();
-            sm.unregisterAll(plugin);
             sm.register(Permission.class, permissionHook, plugin, ServicePriority.High);
-            sm.register(Chat.class, chatHook, plugin, ServicePriority.Low);
+            sm.register(Chat.class, chatHook, plugin, ServicePriority.High);
 
         } catch (Exception e) {
             e.printStackTrace();
         }
+    }
 
+    public void unhook(LPBukkitPlugin plugin) {
+        final ServicesManager sm = plugin.getServer().getServicesManager();
+        if (permissionHook != null) {
+            sm.unregister(Permission.class, permissionHook);
+            permissionHook.getScheduler().cancelTask();
+            permissionHook = null;
+        }
+        if (chatHook != null) {
+            sm.unregister(Chat.class, chatHook);
+            chatHook = null;
+        }
+    }
+
+    public boolean isHooked() {
+        return permissionHook != null && chatHook != null;
     }
 
 }

bukkit/src/main/java/me/lucko/luckperms/bukkit/vault/VaultPermissionHook.java

@@ -0,0 +1,421 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.bukkit.vault;
+
+import lombok.Getter;
+import lombok.NonNull;
+
+import me.lucko.luckperms.api.Contexts;
+import me.lucko.luckperms.api.LocalizedNode;
+import me.lucko.luckperms.api.Node;
+import me.lucko.luckperms.api.Tristate;
+import me.lucko.luckperms.api.caching.PermissionData;
+import me.lucko.luckperms.api.context.ContextSet;
+import me.lucko.luckperms.bukkit.LPBukkitPlugin;
+import me.lucko.luckperms.common.core.model.Group;
+import me.lucko.luckperms.common.core.model.PermissionHolder;
+import me.lucko.luckperms.common.core.model.User;
+import me.lucko.luckperms.exceptions.ObjectAlreadyHasException;
+import me.lucko.luckperms.exceptions.ObjectLacksException;
+
+import net.milkbowl.vault.permission.Permission;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.concurrent.CompletableFuture;
+import java.util.function.Function;
+
+/**
+ * The LuckPerms Vault Permission implementation
+ * Most lookups are cached.
+ */
+@Getter
+public class VaultPermissionHook extends Permission {
+    private LPBukkitPlugin plugin;
+    private VaultScheduler scheduler;
+
+    private final String name = "LuckPerms";
+
+    private String server = "global";
+    private boolean includeGlobal = true;
+    private boolean ignoreWorld = false;
+    private boolean pgo = false;
+    private boolean pgoCheckInherited = false;
+    private boolean pgoCheckExists = true;
+    private boolean pgoCheckMemberOf = true;
+
+    private Function<String, String> WORLD_CORRECTION_FUNCTION = s -> ignoreWorld ? null : s;
+
+    public VaultPermissionHook(LPBukkitPlugin plugin) {
+        this.plugin = plugin;
+        this.scheduler = new VaultScheduler(plugin);
+
+        super.plugin = plugin;
+
+        // Config options
+        this.server = plugin.getConfiguration().getVaultServer();
+        this.includeGlobal = plugin.getConfiguration().isVaultIncludingGlobal();
+        this.ignoreWorld = plugin.getConfiguration().isVaultIgnoreWorld();
+        this.pgo = plugin.getConfiguration().isVaultPrimaryGroupOverrides();
+        this.pgoCheckInherited = plugin.getConfiguration().isVaultPrimaryGroupOverridesCheckInherited();
+        this.pgoCheckExists = plugin.getConfiguration().isVaultPrimaryGroupOverridesCheckExists();
+        this.pgoCheckMemberOf = plugin.getConfiguration().isVaultPrimaryGroupOverridesCheckMemberOf();
+    }
+
+    public void log(String s) {
+        if (plugin.getConfiguration().isVaultDebug()) {
+            plugin.getLog().info("[VAULT] " + s);
+        }
+    }
+
+    @Override
+    public boolean isEnabled() {
+        return plugin.isEnabled();
+    }
+
+    @Override
+    public boolean hasSuperPermsCompat() {
+        return true;
+    }
+
+    /**
+     * Generic method to add a permission to a holder
+     *
+     * @param world      the world to add in
+     * @param holder     the holder to add the permission to
+     * @param permission the permission to add
+     */
+    private CompletableFuture<Void> add(String world, PermissionHolder holder, String permission) {
+        return CompletableFuture.runAsync(() -> {
+            try {
+                if (world != null && !world.equals("") && !world.equalsIgnoreCase("global")) {
+                    holder.setPermission(permission, true, server, world);
+                } else {
+                    holder.setPermission(permission, true, server);
+                }
+
+                save(holder);
+            } catch (ObjectAlreadyHasException ignored) {}
+        }, scheduler);
+    }
+
+    /**
+     * Generic method to remove a permission from a holder
+     *
+     * @param world      the world to remove in
+     * @param holder     the holder to remove the permission from
+     * @param permission the permission to remove
+     */
+    private CompletableFuture<Void> remove(String world, PermissionHolder holder, String permission) {
+        return CompletableFuture.runAsync(() -> {
+            try {
+                if (world != null && !world.equals("") && !world.equalsIgnoreCase("global")) {
+                    holder.unsetPermission(permission, server, world);
+                } else {
+                    holder.unsetPermission(permission, server);
+                }
+
+                save(holder);
+            } catch (ObjectLacksException ignored) {}
+        }, scheduler);
+    }
+
+    /**
+     * Utility method to asynchronously save a user or group
+     *
+     * @param holder the holder instance
+     */
+    public void save(PermissionHolder holder) {
+        if (holder instanceof User) {
+            User u = (User) holder;
+            plugin.getStorage().saveUser(u).thenRunAsync(() -> u.getRefreshBuffer().request(), plugin.getAsyncExecutor());
+        }
+        if (holder instanceof Group) {
+            Group g = (Group) holder;
+            plugin.getStorage().saveGroup(g).thenRunAsync(() -> plugin.getUpdateTaskBuffer().request(), plugin.getAsyncExecutor());
+        }
+    }
+
+    public Contexts createContextForWorld(String world) {
+        Map<String, String> context = new HashMap<>();
+        if (world != null && !world.equals("")) {
+            context.put("world", world);
+        }
+        context.put("server", server);
+        return new Contexts(ContextSet.fromMap(context), isIncludeGlobal(), true, true, true, true, false);
+    }
+
+    @Override
+    public boolean playerHas(String world, @NonNull String player, @NonNull String permission) {
+        world = WORLD_CORRECTION_FUNCTION.apply(world);
+        log("Checking if player " + player + " has permission: " + permission + " on world " + world + ", server " + server);
+
+        User user = plugin.getUserManager().getByUsername(player);
+        if (user == null) return false;
+
+        if (user.getUserData() == null) {
+            return false;
+        }
+
+        // Effectively fallback to the standard Bukkit #hasPermission check.
+        return user.getUserData().getPermissionData(createContextForWorld(world)).getPermissionValue(permission).asBoolean();
+    }
+
+    @Override
+    public boolean playerAdd(String world, @NonNull String player, @NonNull String permission) {
+        world = WORLD_CORRECTION_FUNCTION.apply(world);
+        log("Adding permission to player " + player + ": '" + permission + "' on world " + world + ", server " + server);
+
+        final User user = plugin.getUserManager().getByUsername(player);
+        if (user == null) return false;
+
+        add(world, user, permission);
+        return true;
+    }
+
+    @Override
+    public boolean playerRemove(String world, @NonNull String player, @NonNull String permission) {
+        world = WORLD_CORRECTION_FUNCTION.apply(world);
+        log("Removing permission from player " + player + ": '" + permission + "' on world " + world + ", server " + server);
+
+        final User user = plugin.getUserManager().getByUsername(player);
+        if (user == null) return false;
+
+        remove(world, user, permission);
+        return true;
+    }
+
+    @Override
+    public boolean groupHas(String world, @NonNull String groupName, @NonNull String permission) {
+        world = WORLD_CORRECTION_FUNCTION.apply(world);
+        log("Checking if group " + groupName + " has permission: " + permission + " on world " + world + ", server " + server);
+
+        final Group group = plugin.getGroupManager().getIfLoaded(groupName);
+        if (group == null) return false;
+
+        // This is a nasty call. Groups aren't cached. :(
+        Map<String, Boolean> permissions = group.exportNodes(createContextForWorld(world), true);
+        return permissions.containsKey(permission.toLowerCase()) && permissions.get(permission.toLowerCase());
+    }
+
+    @Override
+    public boolean groupAdd(String world, @NonNull String groupName, @NonNull String permission) {
+        world = WORLD_CORRECTION_FUNCTION.apply(world);
+        log("Adding permission to group " + groupName + ": '" + permission + "' on world " + world + ", server " + server);
+
+        final Group group = plugin.getGroupManager().getIfLoaded(groupName);
+        if (group == null) return false;
+
+        add(world, group, permission);
+        return true;
+    }
+
+    @Override
+    public boolean groupRemove(String world, @NonNull String groupName, @NonNull String permission) {
+        world = WORLD_CORRECTION_FUNCTION.apply(world);
+        log("Removing permission from group " + groupName + ": '" + permission + "' on world " + world + ", server " + server);
+
+        final Group group = plugin.getGroupManager().getIfLoaded(groupName);
+        if (group == null) return false;
+
+        remove(world, group, permission);
+        return true;
+    }
+
+    @Override
+    public boolean playerInGroup(String world, @NonNull String player, @NonNull String group) {
+        world = WORLD_CORRECTION_FUNCTION.apply(world);
+        log("Checking if player " + player + " is in group: " + group + " on world " + world + ", server " + server);
+
+        final User user = plugin.getUserManager().getByUsername(player);
+        if (user == null) return false;
+
+        String w = world; // screw effectively final
+        return user.getNodes().stream()
+                .filter(Node::isGroupNode)
+                .filter(n -> n.shouldApplyOnServer(server, isIncludeGlobal(), false))
+                .filter(n -> n.shouldApplyOnWorld(w, true, false))
+                .map(Node::getGroupName)
+                .anyMatch(s -> s.equalsIgnoreCase(group));
+    }
+
+    @Override
+    public boolean playerAddGroup(String world, @NonNull String player, @NonNull String groupName) {
+        world = WORLD_CORRECTION_FUNCTION.apply(world);
+        log("Adding player " + player + " to group: '" + groupName + "' on world " + world + ", server " + server);
+
+        final User user = plugin.getUserManager().getByUsername(player);
+        if (user == null) return false;
+
+        final Group group = plugin.getGroupManager().getIfLoaded(groupName);
+        if (group == null) return false;
+
+        String w = world;
+        scheduler.execute(() -> {
+            try {
+                if (w != null && !w.equals("") && !w.equalsIgnoreCase("global")) {
+                    user.setInheritGroup(group, server, w);
+                } else {
+                    user.setInheritGroup(group, server);
+                }
+
+                save(user);
+            } catch (ObjectAlreadyHasException ignored) {}
+        });
+        return true;
+    }
+
+    @Override
+    public boolean playerRemoveGroup(String world, @NonNull String player, @NonNull String groupName) {
+        world = WORLD_CORRECTION_FUNCTION.apply(world);
+        log("Removing player " + player + " from group: '" + groupName + "' on world " + world + ", server " + server);
+
+        final User user = plugin.getUserManager().getByUsername(player);
+        if (user == null) return false;
+
+        final Group group = plugin.getGroupManager().getIfLoaded(groupName);
+        if (group == null) return false;
+
+        String w = world;
+        scheduler.execute(() -> {
+            try {
+                if (w != null && !w.equals("") && !w.equalsIgnoreCase("global")) {
+                    user.unsetInheritGroup(group, server, w);
+                } else {
+                    user.unsetInheritGroup(group, server);
+                }
+
+                save(user);
+            } catch (ObjectLacksException ignored) {}
+        });
+        return true;
+    }
+
+    @Override
+    public String[] getPlayerGroups(String world, @NonNull String player) {
+        world = WORLD_CORRECTION_FUNCTION.apply(world);
+        log("Getting groups of player: " + player + ", on world " + world + ", server " + server);
+
+        User user = plugin.getUserManager().getByUsername(player);
+        if (user == null) return new String[0];
+
+        String w = world; // screw effectively final
+        return user.getNodes().stream()
+                .filter(Node::isGroupNode)
+                .filter(n -> n.shouldApplyOnServer(server, isIncludeGlobal(), false))
+                .filter(n -> n.shouldApplyOnWorld(w, true, false))
+                .map(Node::getGroupName)
+                .toArray(String[]::new);
+    }
+
+    @Override
+    public String getPrimaryGroup(String world, @NonNull String player) {
+        world = WORLD_CORRECTION_FUNCTION.apply(world);
+        log("Getting primary group of player: " + player);
+        final User user = plugin.getUserManager().getByUsername(player);
+
+        if (user == null) {
+            return null;
+        }
+
+        if (!pgo) {
+            String g = user.getPrimaryGroup();
+            return plugin.getConfiguration().getGroupNameRewrites().getOrDefault(g, g);
+        }
+
+        if (pgoCheckInherited) {
+            PermissionData data = user.getUserData().getPermissionData(createContextForWorld(world));
+            for (Map.Entry<String, Boolean> e : data.getImmutableBacking().entrySet()) {
+                if (!e.getValue()) {
+                    continue;
+                }
+
+                if (!e.getKey().toLowerCase().startsWith("vault.primarygroup.")) {
+                    continue;
+                }
+
+                String group = e.getKey().substring("vault.primarygroup.".length());
+                if (pgoCheckExists) {
+                    if (!plugin.getGroupManager().isLoaded(group)) {
+                        continue;
+                    }
+                }
+
+                if (pgoCheckMemberOf) {
+                    if (data.getPermissionValue("group." + group) != Tristate.TRUE) {
+                        continue;
+                    }
+                }
+
+                return group;
+            }
+        } else {
+            for (LocalizedNode node : user.getPermissions(true)) {
+                if (!node.getValue()) {
+                    continue;
+                }
+
+                if (!node.getPermission().toLowerCase().startsWith("vault.primarygroup.")) {
+                    continue;
+                }
+
+                if (!node.shouldApplyOnServer(server, isIncludeGlobal(), false)) {
+                    continue;
+                }
+
+                if (!node.shouldApplyOnWorld(world, true, false)) {
+                    continue;
+                }
+
+                String group = node.getPermission().substring("vault.primarygroup.".length());
+                if (pgoCheckExists) {
+                    if (!plugin.getGroupManager().isLoaded(group)) {
+                        continue;
+                    }
+                }
+
+                if (pgoCheckMemberOf) {
+                    if (!user.getLocalGroups(server, world, isIncludeGlobal()).contains(group.toLowerCase())) {
+                        continue;
+                    }
+                }
+
+                return group;
+            }
+        }
+
+        // Fallback
+        String g = user.getPrimaryGroup();
+        return plugin.getConfiguration().getGroupNameRewrites().getOrDefault(g, g);
+    }
+
+    @Override
+    public String[] getGroups() {
+        return plugin.getGroupManager().getAll().keySet().toArray(new String[0]);
+    }
+
+    @Override
+    public boolean hasGroupSupport() {
+        return true;
+    }
+}

bukkit/src/main/java/me/lucko/luckperms/bukkit/vault/VaultScheduler.java

@@ -20,53 +20,55 @@
  *  SOFTWARE.
  */
 
-package me.lucko.luckperms.commands;
+package me.lucko.luckperms.bukkit.vault;
 
-import lombok.AllArgsConstructor;
-import lombok.Getter;
-import lombok.RequiredArgsConstructor;
+import me.lucko.luckperms.bukkit.LPBukkitPlugin;
+
+import org.bukkit.scheduler.BukkitTask;
 
 import java.util.ArrayList;
 import java.util.List;
+import java.util.concurrent.Executor;
 
 /**
- * Executes commands consecutively
+ * Sequential executor for Vault modifications
  */
-@RequiredArgsConstructor
-public class ConsecutiveExecutor implements Runnable {
-    private final CommandManager manager;
+public class VaultScheduler implements Runnable, Executor {
 
-    private final List<QueuedCommand> commands = new ArrayList<>();
+    private BukkitTask task = null;
+    private final List<Runnable> tasks = new ArrayList<>();
 
-    public void queueCommand(QueuedCommand command) {
-        synchronized (commands) {
-            commands.add(command);
+    public VaultScheduler(LPBukkitPlugin plugin) {
+        task = plugin.getServer().getScheduler().runTaskTimerAsynchronously(plugin, this, 1L, 1L);
+    }
+
+    @Override
+    public void execute(Runnable r) {
+        synchronized (tasks) {
+            tasks.add(r);
         }
     }
 
     @Override
     public void run() {
-        final List<QueuedCommand> toExecute = new ArrayList<>();
-        synchronized (commands) {
-            toExecute.addAll(commands);
-            commands.clear();
-        }
-
-        if (toExecute.isEmpty()) {
-            return;
-        }
-
-        for (QueuedCommand command : toExecute) {
-            manager.onCommand(command.getSender(), "perms", command.getArgs());
+        List<Runnable> toRun;
+        synchronized (tasks) {
+            if (tasks.isEmpty()) {
+                return;
+            }
+
+            toRun = new ArrayList<>();
+            toRun.addAll(tasks);
+            tasks.clear();
         }
 
+        toRun.forEach(Runnable::run);
     }
 
-    @Getter
-    @AllArgsConstructor
-    public static class QueuedCommand {
-        private final Sender sender;
-        private final List<String> args;
+    public void cancelTask() {
+        if (task != null) {
+            task.cancel();
+            task = null;
+        }
     }
-
 }

bukkit/src/main/java/me/lucko/luckperms/inject/Injector.java

@@ -1,108 +0,0 @@
-/*
- * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
- *
- *  Permission is hereby granted, free of charge, to any person obtaining a copy
- *  of this software and associated documentation files (the "Software"), to deal
- *  in the Software without restriction, including without limitation the rights
- *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- *  copies of the Software, and to permit persons to whom the Software is
- *  furnished to do so, subject to the following conditions:
- *
- *  The above copyright notice and this permission notice shall be included in all
- *  copies or substantial portions of the Software.
- *
- *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- *  SOFTWARE.
- */
-
-package me.lucko.luckperms.inject;
-
-import lombok.experimental.UtilityClass;
-import org.bukkit.Bukkit;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.Permissible;
-import org.bukkit.permissions.PermissibleBase;
-
-import java.lang.reflect.Field;
-
-/**
- * Injects a {@link LPPermissible} into a {@link Player}
- */
-@UtilityClass
-public class Injector {
-    private static Field HUMAN_ENTITY_FIELD;
-
-    static {
-        try {
-            HUMAN_ENTITY_FIELD = Class.forName(getInternalClassName("entity.CraftHumanEntity")).getDeclaredField("perm");
-            HUMAN_ENTITY_FIELD.setAccessible(true);
-        } catch (Exception e) {
-            e.printStackTrace();
-        }
-    }
-
-    public static boolean inject(CommandSender sender, PermissibleBase permissible) {
-        try {
-            Field f = getPermField(sender);
-            f.set(sender, permissible);
-            return true;
-        } catch (Exception e) {
-            e.printStackTrace();
-            return false;
-        }
-    }
-
-    public static boolean unInject(CommandSender sender) {
-        try {
-            Permissible permissible = getPermissible(sender);
-            if (permissible instanceof LPPermissible) {
-                getPermField(sender).set(sender, new PermissibleBase(sender));
-            }
-            return true;
-        } catch (Exception e) {
-            e.printStackTrace();
-            return false;
-        }
-    }
-
-    private static Permissible getPermissible(CommandSender sender) {
-        try {
-            Field f = getPermField(sender);
-            return (Permissible) f.get(sender);
-        } catch (Exception e) {
-            throw new RuntimeException(e);
-        }
-    }
-
-    private static Field getPermField(CommandSender sender) {
-        if (sender instanceof Player) {
-            return HUMAN_ENTITY_FIELD;
-        }
-        throw new RuntimeException("Couldn't get perm field for sender " + sender.getClass().getName());
-    }
-
-    private static String getInternalClassName(String className) {
-        Class server = Bukkit.getServer().getClass();
-        if (!server.getSimpleName().equals("CraftServer")) {
-            throw new RuntimeException("Couldn't inject into server " + server);
-        }
-
-        String version;
-        if (server.getName().equals("org.bukkit.craftbukkit.CraftServer")) {
-            // Non versioned class
-            version = ".";
-        } else {
-            version = server.getName().substring("org.bukkit.craftbukkit".length());
-            version = version.substring(0, version.length() - "CraftServer".length());
-        }
-
-        return "org.bukkit.craftbukkit" + version + className;
-    }
-
-}

bukkit/src/main/java/me/lucko/luckperms/users/BukkitUser.java

@@ -1,122 +0,0 @@
-/*
- * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
- *
- *  Permission is hereby granted, free of charge, to any person obtaining a copy
- *  of this software and associated documentation files (the "Software"), to deal
- *  in the Software without restriction, including without limitation the rights
- *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- *  copies of the Software, and to permit persons to whom the Software is
- *  furnished to do so, subject to the following conditions:
- *
- *  The above copyright notice and this permission notice shall be included in all
- *  copies or substantial portions of the Software.
- *
- *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- *  SOFTWARE.
- */
-
-package me.lucko.luckperms.users;
-
-import lombok.Getter;
-import lombok.Setter;
-import me.lucko.luckperms.LPBukkitPlugin;
-import me.lucko.luckperms.api.event.events.UserPermissionRefreshEvent;
-import me.lucko.luckperms.api.implementation.internal.UserLink;
-import me.lucko.luckperms.inject.LPPermissible;
-import me.lucko.luckperms.utils.Contexts;
-import org.bukkit.permissions.Permissible;
-
-import java.util.Collections;
-import java.util.Map;
-import java.util.UUID;
-
-public class BukkitUser extends User {
-    private final LPBukkitPlugin plugin;
-
-    @Getter
-    @Setter
-    private LPPermissible lpPermissible = null;
-
-    BukkitUser(UUID uuid, LPBukkitPlugin plugin) {
-        super(uuid, plugin);
-        this.plugin = plugin;
-    }
-
-    BukkitUser(UUID uuid, String username, LPBukkitPlugin plugin) {
-        super(uuid, username, plugin);
-        this.plugin = plugin;
-    }
-
-    @SuppressWarnings("unchecked")
-    @Override
-    public synchronized void refreshPermissions() {
-        if (lpPermissible == null) {
-            return;
-        }
-
-        // Calculate the permissions that should be applied. This is done async, who cares about how long it takes or how often it's done.
-        Map<String, Boolean> toApply = exportNodes(
-                new Contexts(
-                        getPlugin().getConfiguration().getServer(),
-                        plugin.getUserManager().getWorldCache().get(getUuid()),
-                        null,
-                        getPlugin().getConfiguration().getIncludeGlobalPerms(),
-                        getPlugin().getConfiguration().getIncludeGlobalWorldPerms(),
-                        true,
-                        getPlugin().getConfiguration().getApplyGlobalGroups(),
-                        getPlugin().getConfiguration().getApplyGlobalWorldGroups()
-                ),
-                Collections.emptyList()
-        );
-
-        try {
-            Map<String, Boolean> existing = lpPermissible.getLuckPermsPermissions();
-
-            boolean different = false;
-            if (toApply.size() != existing.size()) {
-                different = true;
-            } else {
-                for (Map.Entry<String, Boolean> e : existing.entrySet()) {
-                    if (toApply.containsKey(e.getKey()) && toApply.get(e.getKey()) == e.getValue()) {
-                        continue;
-                    }
-                    different = true;
-                    break;
-                }
-            }
-
-            if (!different) return;
-
-            existing.clear();
-            lpPermissible.invalidateCache();
-            existing.putAll(toApply);
-
-            if (plugin.getConfiguration().getAutoOp()) {
-                boolean op = false;
-
-                for (Map.Entry<String, Boolean> e : toApply.entrySet()) {
-                    if (e.getKey().equalsIgnoreCase("luckperms.autoop") && e.getValue()) {
-                        op = true;
-                        break;
-                    }
-                }
-
-                final boolean finalOp = op;
-                if (lpPermissible.isOp() != op) {
-                    final Permissible parent = lpPermissible.getParent();
-                    plugin.doSync(() -> parent.setOp(finalOp));
-                }
-            }
-
-            plugin.getApiProvider().fireEventAsync(new UserPermissionRefreshEvent(new UserLink(this)));
-
-        } catch (Exception e) {
-            e.printStackTrace();
-        }
-    }
-}

bukkit/src/main/java/me/lucko/luckperms/users/BukkitUserManager.java

@@ -1,92 +0,0 @@
-/*
- * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
- *
- *  Permission is hereby granted, free of charge, to any person obtaining a copy
- *  of this software and associated documentation files (the "Software"), to deal
- *  in the Software without restriction, including without limitation the rights
- *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- *  copies of the Software, and to permit persons to whom the Software is
- *  furnished to do so, subject to the following conditions:
- *
- *  The above copyright notice and this permission notice shall be included in all
- *  copies or substantial portions of the Software.
- *
- *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- *  SOFTWARE.
- */
-
-package me.lucko.luckperms.users;
-
-import lombok.Getter;
-import me.lucko.luckperms.LPBukkitPlugin;
-import me.lucko.luckperms.inject.Injector;
-import org.bukkit.entity.Player;
-
-import java.util.Map;
-import java.util.Set;
-import java.util.UUID;
-import java.util.concurrent.ConcurrentHashMap;
-import java.util.stream.Collectors;
-
-public class BukkitUserManager extends UserManager {
-    private final LPBukkitPlugin plugin;
-
-    @Getter
-    private final Map<UUID, String> worldCache = new ConcurrentHashMap<>();
-
-    public BukkitUserManager(LPBukkitPlugin plugin) {
-        super(plugin);
-        this.plugin = plugin;
-    }
-
-    @Override
-    public void preUnload(User user) {
-        if (user instanceof BukkitUser) {
-            BukkitUser u = (BukkitUser) user;
-            Player player = plugin.getServer().getPlayer(plugin.getUuidCache().getExternalUUID(u.getUuid()));
-            if (player != null) {
-                if (u.getLpPermissible() != null) {
-                    Injector.unInject(player);
-                    u.setLpPermissible(null);
-                }
-
-                if (plugin.getConfiguration().getAutoOp()) {
-                    player.setOp(false);
-                }
-            }
-        }
-    }
-
-    @Override
-    public void cleanup(User user) {
-        if (plugin.getServer().getPlayer(plugin.getUuidCache().getExternalUUID(user.getUuid())) == null) {
-            unload(user);
-        }
-    }
-
-    @Override
-    public User make(UUID uuid) {
-        return new BukkitUser(uuid, plugin);
-    }
-
-    @Override
-    public User make(UUID uuid, String username) {
-        return new BukkitUser(uuid, username, plugin);
-    }
-
-    @Override
-    public void updateAllUsers() {
-        // Sometimes called async, so we need to get the players on the Bukkit thread.
-        plugin.doSync(() -> {
-            Set<UUID> players = plugin.getServer().getOnlinePlayers().stream()
-                    .map(p -> plugin.getUuidCache().getUUID(p.getUniqueId()))
-                    .collect(Collectors.toSet());
-            plugin.doAsync(() -> players.forEach(u -> plugin.getDatastore().loadUser(u, "null")));
-        });
-    }
-}

bukkit/src/main/resources/config.yml

@@ -5,6 +5,10 @@
 # +------------------------------------------------------------------------+ #
 ##############################################################################
 
+# +------------------------------------------------------------------------+ #
+# |                               General                                  | #
+# +------------------------------------------------------------------------+ #
+
 # The name of the server, used for server specific permissions. Set to 'global' to disable.
 server: global
 
@@ -24,21 +28,31 @@ apply-global-world-groups: true
 
 # If this server is in offline or online mode.
 # This setting allows a player to have the same UUID across a network of offline mode/mixed servers.
-
+#
 # You should generally reflect the setting in server.properties here. Except when...
-
+#
 # 1. You have Spigot servers connected to a BungeeCord proxy, with online-mode set to false, but 'bungeecord' set to true in the spigot.yml
 #    AND 'ip-forward' set to true in the BungeeCord config.yml
 #    In this case, set online-mode in LuckPerms to true, despite the server being in offline mode.
-
+#
 # 2. You are only running one server instance using LuckPerms, (not a network)
 #    In this case, set online-mode to true no matter what is set in server.properties. (we can just fallback to the servers uuid cache)
-
+#
 # 3. If your proxy is running in offline mode, and you are using PaperSpigot (https://ci.destroystokyo.com/job/PaperSpigot/),
 #    you should set "bungee-online-mode" to false in the paper.yml, and set "online-mode" to true in all LuckPerms configs.
 #    This approach is thoroughly recommended for offline mode networks.
 online-mode: true
 
+# If the plugin should send log notifications to users whenever permissions are modified.
+log-notify: true
+
+
+
+
+# +------------------------------------------------------------------------+ #
+# |                        Permission Calculation                          | #
+# +------------------------------------------------------------------------+ #
+
 # If the plugin should apply wildcard permissions.
 # If set to true, LuckPerms will detect wildcard permissions, and resolve & apply all registered permissions matching
 # the wildcard.
@@ -53,11 +67,17 @@ apply-regex: true
 # If set to true, LuckPerms will detect and expand shorthand node patterns.
 apply-shorthand: true
 
-# If the plugin should send log notifications to users whenever permissions are modified.
-log-notify: true
+# Define special group weights for this server.
+# Default is just 0.
+group-weight:
+#  admin: 10
 
-# If LuckPerms should print to console every time a plugin checks if a player has a permission
-debug-permission-checks: false
+
+
+
+# +------------------------------------------------------------------------+ #
+# |                    OP (Server Operator) Settings                       | #
+# +------------------------------------------------------------------------+ #
 
 # If the vanilla OP system is enabled. If set to false, all users will be de-opped, and the op/deop commands will be disabled.
 enable-ops: true
@@ -67,12 +87,23 @@ enable-ops: true
 # Additionally, setting this to true will force the "enable-ops" option above to false. All users will be de-opped unless
 # they have the permission node, and the op/deop commands will be disabled.
 #
+# It is important to note that this setting is only checked when a player first joins the server, and when they switch
+# worlds. Therefore, simply removing this permission from a user will not automatically de-op them. A player needs to
+# relog to have the change take effect.
+#
 # It is recommended that you use this option instead of assigning a single '*' permission.
 auto-op: false
 
 # If opped players should be allowed to use LuckPerms commands. Set to false to only allow users who have the permissions access to the commands
 commands-allow-op: true
 
+
+
+
+# +------------------------------------------------------------------------+ #
+# |                                Vault                                   | #
+# +------------------------------------------------------------------------+ #
+
 # The name of the server used within Vault operations. If you don't want Vault operations to be server specific, set this
 # to "global".
 vault-server: global
@@ -80,14 +111,48 @@ vault-server: global
 # If global permissions should be considered when retrieving meta or player groups
 vault-include-global: true
 
+# If Vault operations should ignore any world arguments if supplied.
+vault-ignore-world: false
+
+# This block controls the Primary Group override feature
+# See the wiki for more information.
+vault-primary-groups-overrides:
+  # If the feature is enabled
+  enabled: false
+  # If the check should query the user's inherited permissions.
+  # (a value of false only checks the permissions they explicitly have)
+  check-inherited-permissions: false
+  # If LuckPerms should check if the group exists
+  check-group-exists: true
+  # If LuckPerms should check if the user is actually a member of the group
+  check-user-member-of: true
+
+# If LuckPerms should print debugging info to console when a plugin uses a Vault function
+vault-debug: false
+
+# Mirrors world names. Whenever LuckPerms checks what world a user is in, if the world name is in this list, the value assigned
+# will be sent forward for permission calculation instead.
+world-rewrite:
+#  world_nether: world
+#  world_the_end: world
+
+# Rewrites group names. The underlying name of the group does not change, just the output in commands / placeholders / Vault.
+group-name-rewrite:
+#  default: Member
+
+
+
+
+# +------------------------------------------------------------------------+ #
+# |                               Storage                                  | #
+# +------------------------------------------------------------------------+ #
+
 # Which storage method the plugin should use.
-# Currently supported: mysql, sqlite, h2, json, yaml, mongodb
-# Fill out connection info below if you're using MySQL or MongoDB
+# Currently supported: mysql, postgresql, sqlite, h2, json, yaml, mongodb
+# Fill out connection info below if you're using MySQL, PostgreSQL or MongoDB
 storage-method: h2
 
 # This block enables support for split datastores.
-# Only touch this if you're sure that you know what you're doing.
-# I (the author) do not endorse nor recommend the use of this feature.
 split-storage:
   enabled: false
   methods:
@@ -98,11 +163,112 @@ split-storage:
     log: h2
 
 data:
-  address: localhost:3306
+  # Uses standard DB engine port by default
+  # MySQL: 3306, PostgreSQL: 5432, MongoDB: 27017
+  # Specify as "host:port" if differs
+  address: localhost
+
   database: minecraft
   username: root
   password: ''
+  pool-size: 10 # The size of the MySQL connection pool.
+
+  # The prefix for all LuckPerms tables. Change this is you want to use different tables for different servers.
+  # This should *not* be set to "lp_" if you have previously ran LuckPerms v2.16.81 or earlier with this database.
+  table_prefix: 'luckperms_'
 
   # Set to -1 to disable. If this is the only instance accessing the datastore, you can disable syncing.
   # e.g. if you're using sqlite or flatfile, this can be set to -1 to save resources.
   sync-minutes: 3
+
+# Settings for Redis.
+#
+# If enabled and configured, LuckPerms will use the Redis PubSub system to inform other
+# connected servers of changes. Use the command "/luckperms networksync" to push changes.
+# Data is NOT stored on redis. It is only used as a messaging platform.
+#
+# If you decide to enable this feature, you should set "sync-minutes" to -1, as there is no need for LuckPerms
+# to poll the database for changes.
+#
+# Port 6379 is used by default; set address to "host:port" if differs
+redis:
+  enabled: false
+  address: localhost
+  password: ''
+
+
+
+
+# +------------------------------------------------------------------------+ #
+# |                         Default Assignments                            | #
+# +------------------------------------------------------------------------+ #
+
+# This section allows you to define defaults to give users whenever they connect to the server.
+# The default assignments are highly configurable and conditional.
+#
+# There is one default assignment built into LuckPerms, which will add all users to the "default" group if they
+# are not a member of any other group. This setting cannot be disabled. However, you can use this section to add more of
+# your own.
+#
+# IMPORTANT:
+# In order to save storage space, LuckPerms does not store users who have no permissions defined, and are only a member
+# of the default group. Adding default assignments to this section will negate this effect. It is HIGHLY RECCOMENDED
+# that instead of assigning defaults here, you add permissions to the "default" group, or set the "default" group to inherit
+# other groups, and then use the group-name-rewrite rule above.
+#
+# It is also important to note that these rules are considered every time a player logs into the server, and are applied
+# directly to the user's data. Simply removing a rule here will not reserse the effect of that rule on any users who have
+# already had it applied to them.
+#
+# The "has" and "lacks" conditions below support standard boolean logic, using the 'and' & 'or' characters used in Java.
+# e.g. "(some.other.permission | some.permission.other) & some.thing.else" == a user has 'some.other.permission', or
+# 'some.permission.other', and they also have 'some.thing.else'
+#
+# Groups are represented by the permission node: group.<group name>
+# Per server and per world nodes are represented by: "server-world/permission" or "server/permission"
+#
+# Within conditions, permission nodes MUST be escaped using "<" and ">". See the example below.
+#
+# Explaination of the examples below: (they're just to demonstrate the features & use cases)
+#
+# rule1:
+# If a user is either in the vip or vip+ group, and they have the "titles.titlecollector" permission set to true, and the
+# "some.random.permission" set to false... if they're not in the group "prison_titlepack" on the "prison" server, then
+# give add them to the "prison_titlepack" group on the "prison" server, and remove "some.random.permission".
+#
+# rule2:
+# If the user isn't in any of the following groups on the skyblock server: sb_level1, sb_level2, sb_level3, then add
+# them to sb_level1 on the skyblock server.
+#
+# rule3:
+# If the user is a member of the default group, remove them from default, add them to member, and set their primary group
+# to member.
+#
+# WARNING: Unlike internal commands, this system does not ensure that a group exists before adding a user to it.
+# It also does not unsure that a user is a member of a group before making that group their primary group.
+#
+# Before you use "give: group.<name>" or "set-primary-group", make sure that the group exists, and that the user is
+# a member of the group.
+default-assignments:
+#  rule1:
+#    if:
+#      has-true: (<group.vip> | <group.vip+>) & <titles.tilecollector>
+#      has-false: <some.random.permission>
+#      lacks: <prison/group.prison_titlepack>
+#    give:
+#      - prison/group.prison_titlepack
+#    take:
+#      - some.random.permission
+#  rule2:
+#    if:
+#      lacks: <skyblock/group.sb_level1> & <skyblock/group.sb_level2> & <skyblock/group.sb_level3>
+#    give:
+#      - skyblock/group.sb_level1
+#  rule3:
+#    if:
+#      has-true: <group.default>
+#    take:
+#      - group.default
+#    give:
+#      - group.member
+#    set-primary-group: member

bukkit/src/main/resources/plugin.yml

@@ -4,13 +4,19 @@ description: A permissions plugin
 author: Luck
 website: https://github.com/lucko/LuckPerms
 
-main: me.lucko.luckperms.LPBukkitPlugin
-softdepend: [Vault, PermissionsEx, GroupManager, PowerfulPerms, zPermissions, bPermissions] # For migration
+main: me.lucko.luckperms.bukkit.LPBukkitPlugin
+load: STARTUP
+
+# This means that all plugins that (soft-)depend on Vault, depend on LuckPerms too.
+# It in turn fixes issues where plugins using Vault cache the provided instance when their plugin enables, or
+# when they check for the presence of a service provider, before LuckPerms has enabled.
+loadbefore: [Vault]
 
 commands:
   luckperms:
     description: Manage permissions
-    aliases: [perms, permissions, lp, p, perm]
+    aliases: [perms, permissions, lp, perm]
 
 
-# Permissions are registered programmatically instead of here.
+# Permissions are registered programmatically instead of here.
+# See: the last method in me.lucko.luckperms.bukkit.LPBukkitPlugin

bungee/pom.xml

@@ -1,11 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xmlns="http://maven.apache.org/POM/4.0.0"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>luckperms</artifactId>
         <groupId>me.lucko.luckperms</groupId>
-        <version>2.9-SNAPSHOT</version>
+        <version>2.17-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
@@ -14,7 +14,7 @@
 
     <build>
         <defaultGoal>clean package</defaultGoal>
-        <finalName>LuckPermsBungee-${release.version}.${git.closest.tag.commit.count}</finalName>
+        <finalName>LuckPerms-Bungee-${release.version}.${git.closest.tag.commit.count}</finalName>
         <sourceDirectory>${basedir}/src/main/java</sourceDirectory>
         <resources>
             <resource>
@@ -46,28 +46,8 @@
                             <minimizeJar>false</minimizeJar>
                             <relocations>
                                 <relocation>
-                                    <pattern>org.slf4j</pattern>
-                                    <shadedPattern>me.lucko.luckperms.lib.slf4j</shadedPattern>
-                                </relocation>
-                                <relocation>
-                                    <pattern>com.zaxxer.hikari</pattern>
-                                    <shadedPattern>me.lucko.luckperms.lib.hikari</shadedPattern>
-                                </relocation>
-                                <relocation>
-                                    <pattern>com.mongodb</pattern>
-                                    <shadedPattern>me.lucko.luckperms.lib.mongodb</shadedPattern>
-                                </relocation>
-                                <relocation>
-                                    <pattern>org.bson</pattern>
-                                    <shadedPattern>me.lucko.luckperms.lib.bson</shadedPattern>
-                                </relocation>
-                                <relocation>
-                                    <pattern>org.h2</pattern>
-                                    <shadedPattern>me.lucko.luckperms.lib.h2</shadedPattern>
-                                </relocation>
-                                <relocation>
-                                    <pattern>org.sqlite</pattern>
-                                    <shadedPattern>me.lucko.luckperms.lib.sqlite</shadedPattern>
+                                    <pattern>io.github.mkremins.fanciful</pattern>
+                                    <shadedPattern>me.lucko.luckperms.lib.fanciful</shadedPattern>
                                 </relocation>
                             </relocations>
                         </configuration>
@@ -114,6 +94,13 @@
             <version>${project.version}</version>
             <scope>compile</scope>
         </dependency>
+        <!-- slf4j library -->
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-simple</artifactId>
+            <version>1.7.9</version>
+            <scope>provided</scope>
+        </dependency>
         <!-- Lombok -->
         <dependency>
             <groupId>org.projectlombok</groupId>
@@ -121,6 +108,13 @@
             <version>1.16.10</version>
             <scope>provided</scope>
         </dependency>
+        <!-- **************Migration Plugins************** -->
+        <dependency>
+            <groupId>net.alpenblock</groupId>
+            <artifactId>BungeePerms</artifactId>
+            <version>3.0-dev-52</version>
+            <scope>provided</scope>
+        </dependency>
     </dependencies>
 
 </project>

bungee/src/main/java/me/lucko/luckperms/BungeePlayerCache.java

@@ -1,61 +0,0 @@
-/*
- * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
- *
- *  Permission is hereby granted, free of charge, to any person obtaining a copy
- *  of this software and associated documentation files (the "Software"), to deal
- *  in the Software without restriction, including without limitation the rights
- *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- *  copies of the Software, and to permit persons to whom the Software is
- *  furnished to do so, subject to the following conditions:
- *
- *  The above copyright notice and this permission notice shall be included in all
- *  copies or substantial portions of the Software.
- *
- *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- *  SOFTWARE.
- */
-
-package me.lucko.luckperms;
-
-import lombok.Getter;
-import me.lucko.luckperms.utils.PermissionCalculator;
-import me.lucko.luckperms.utils.PermissionProcessor;
-
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Map;
-import java.util.concurrent.ConcurrentHashMap;
-
-public class BungeePlayerCache {
-
-    private final PermissionCalculator calculator;
-
-    @Getter
-    private final Map<String, Boolean> permissions = new ConcurrentHashMap<>();
-
-    public BungeePlayerCache(LuckPermsPlugin plugin, String name) {
-        List<PermissionProcessor> processors = new ArrayList<>(3);
-        processors.add(new PermissionCalculator.MapProcessor(permissions));
-        if (plugin.getConfiguration().getApplyWildcards()) {
-            processors.add(new PermissionCalculator.WildcardProcessor(permissions));
-        }
-        if (plugin.getConfiguration().getApplyRegex()) {
-            processors.add(new PermissionCalculator.RegexProcessor(permissions));
-        }
-
-        calculator = new PermissionCalculator(plugin, name, plugin.getConfiguration().getDebugPermissionChecks(), processors);
-    }
-
-    public void invalidateCache() {
-        calculator.invalidateCache();
-    }
-
-    public boolean getPermissionValue(String permission) {
-        return calculator.getPermissionValue(permission).asBoolean();
-    }
-}

bungee/src/main/java/me/lucko/luckperms/LPBungeePlugin.java

@@ -1,218 +0,0 @@
-/*
- * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
- *
- *  Permission is hereby granted, free of charge, to any person obtaining a copy
- *  of this software and associated documentation files (the "Software"), to deal
- *  in the Software without restriction, including without limitation the rights
- *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- *  copies of the Software, and to permit persons to whom the Software is
- *  furnished to do so, subject to the following conditions:
- *
- *  The above copyright notice and this permission notice shall be included in all
- *  copies or substantial portions of the Software.
- *
- *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- *  SOFTWARE.
- */
-
-package me.lucko.luckperms;
-
-import lombok.Getter;
-import me.lucko.luckperms.api.Logger;
-import me.lucko.luckperms.api.PlatformType;
-import me.lucko.luckperms.api.implementation.ApiProvider;
-import me.lucko.luckperms.commands.CommandManager;
-import me.lucko.luckperms.commands.ConsecutiveExecutor;
-import me.lucko.luckperms.commands.Sender;
-import me.lucko.luckperms.constants.Message;
-import me.lucko.luckperms.constants.Permission;
-import me.lucko.luckperms.core.LPConfiguration;
-import me.lucko.luckperms.core.UuidCache;
-import me.lucko.luckperms.data.Importer;
-import me.lucko.luckperms.groups.GroupManager;
-import me.lucko.luckperms.runnables.ExpireTemporaryTask;
-import me.lucko.luckperms.runnables.UpdateTask;
-import me.lucko.luckperms.storage.Datastore;
-import me.lucko.luckperms.storage.StorageFactory;
-import me.lucko.luckperms.tracks.TrackManager;
-import me.lucko.luckperms.users.BungeeUserManager;
-import me.lucko.luckperms.users.UserManager;
-import me.lucko.luckperms.utils.LogFactory;
-import net.md_5.bungee.api.connection.ProxiedPlayer;
-import net.md_5.bungee.api.plugin.Plugin;
-
-import java.io.File;
-import java.util.*;
-import java.util.concurrent.ConcurrentHashMap;
-import java.util.concurrent.TimeUnit;
-import java.util.stream.Collectors;
-
-@Getter
-public class LPBungeePlugin extends Plugin implements LuckPermsPlugin {
-    private final Map<UUID, BungeePlayerCache> playerCache = new ConcurrentHashMap<>();
-    private final Set<UUID> ignoringLogs = ConcurrentHashMap.newKeySet();
-    private LPConfiguration configuration;
-    private UserManager userManager;
-    private GroupManager groupManager;
-    private TrackManager trackManager;
-    private Datastore datastore;
-    private UuidCache uuidCache;
-    private ApiProvider apiProvider;
-    private Logger log;
-    private Importer importer;
-    private ConsecutiveExecutor consecutiveExecutor;
-
-    @Override
-    public void onEnable() {
-        log = LogFactory.wrap(getLogger());
-
-        getLog().info("Loading configuration...");
-        configuration = new BungeeConfig(this);
-
-        // register events
-        getProxy().getPluginManager().registerListener(this, new BungeeListener(this));
-
-        // register commands
-        getLog().info("Registering commands...");
-        CommandManager commandManager = new CommandManager(this);
-        getProxy().getPluginManager().registerCommand(this, new BungeeCommand(commandManager));
-
-        // disable the default Bungee /perms command so it gets handled by the Bukkit plugin
-        getProxy().getDisabledCommands().add("perms");
-
-        datastore = StorageFactory.getDatastore(this, "h2");
-
-        getLog().info("Loading internal permission managers...");
-        uuidCache = new UuidCache(getConfiguration().getOnlineMode());
-        userManager = new BungeeUserManager(this);
-        groupManager = new GroupManager(this);
-        trackManager = new TrackManager();
-        importer = new Importer(commandManager);
-        consecutiveExecutor = new ConsecutiveExecutor(commandManager);
-
-        int mins = getConfiguration().getSyncTime();
-        if (mins > 0) {
-            getProxy().getScheduler().schedule(this, new UpdateTask(this), mins, mins, TimeUnit.MINUTES);
-        }
-
-        // 20 times per second (once per "tick")
-        getProxy().getScheduler().schedule(this, BungeeSenderFactory.get(), 50L, 50L, TimeUnit.MILLISECONDS);
-        getProxy().getScheduler().schedule(this, new ExpireTemporaryTask(this), 3L, 3L, TimeUnit.SECONDS);
-        getProxy().getScheduler().schedule(this, consecutiveExecutor, 1L, 1L, TimeUnit.SECONDS);
-
-        getLog().info("Registering API...");
-        apiProvider = new ApiProvider(this);
-        LuckPerms.registerProvider(apiProvider);
-
-        // Run update task to refresh any online users
-        getLog().info("Scheduling Update Task to refresh any online users.");
-        try {
-            new UpdateTask(this).run();
-        } catch (Exception e) {
-            e.printStackTrace();
-        }
-
-        getLog().info("Successfully loaded.");
-    }
-
-    @Override
-    public void onDisable() {
-        getLog().info("Closing datastore...");
-        datastore.shutdown();
-
-        getLog().info("Unregistering API...");
-        LuckPerms.unregisterProvider();
-    }
-
-    @Override
-    public String getVersion() {
-        return getDescription().getVersion();
-    }
-
-    @Override
-    public PlatformType getType() {
-        return PlatformType.BUNGEE;
-    }
-
-    @Override
-    public File getMainDir() {
-        return getDataFolder();
-    }
-
-    @Override
-    public Message getPlayerStatus(UUID uuid) {
-        return getProxy().getPlayer(getUuidCache().getExternalUUID(uuid)) != null ? Message.PLAYER_ONLINE : Message.PLAYER_OFFLINE;
-    }
-
-    @Override
-    public int getPlayerCount() {
-        return getProxy().getOnlineCount();
-    }
-
-    @Override
-    public List<String> getPlayerList() {
-        return getProxy().getPlayers().stream().map(ProxiedPlayer::getName).collect(Collectors.toList());
-    }
-
-    @Override
-    public List<Sender> getNotifyListeners() {
-        return getProxy().getPlayers().stream()
-                .map(p -> BungeeSenderFactory.get().wrap(p, Collections.singleton(Permission.LOG_NOTIFY)))
-                .filter(Permission.LOG_NOTIFY::isAuthorized)
-                .collect(Collectors.toList());
-    }
-
-    @Override
-    public Sender getConsoleSender() {
-        return BungeeSenderFactory.get().wrap(getProxy().getConsole());
-    }
-
-    @Override
-    public List<String> getPossiblePermissions() {
-        // No such thing on Bungee. Wildcards are processed in the listener instead.
-        return Collections.emptyList();
-    }
-
-    @Override
-    public Object getPlugin(String name) {
-        return getProxy().getPluginManager().getPlugin(name);
-    }
-
-    @Override
-    public Object getService(Class clazz) {
-        return null;
-    }
-
-    @Override
-    public UUID getUUID(String playerName) {
-        return null; // Not needed on Bungee
-    }
-
-    @Override
-    public boolean isPluginLoaded(String name) {
-        return getProxy().getPluginManager().getPlugins().stream()
-                .filter(p -> p.getDescription().getName().equalsIgnoreCase(name))
-                .findAny()
-                .isPresent();
-    }
-
-    @Override
-    public void runUpdateTask() {
-        doAsync(new UpdateTask(this));
-    }
-
-    @Override
-    public void doAsync(Runnable r) {
-        getProxy().getScheduler().runAsync(this, r);
-    }
-
-    @Override
-    public void doSync(Runnable r) {
-        r.run();
-    }
-}

bungee/src/main/java/me/lucko/luckperms/bungee/BackendServerCalculator.java

@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.bungee;
+
+import com.google.common.collect.Maps;
+
+import me.lucko.luckperms.api.context.ContextCalculator;
+import me.lucko.luckperms.api.context.MutableContextSet;
+
+import net.md_5.bungee.api.connection.ProxiedPlayer;
+import net.md_5.bungee.api.event.ServerSwitchEvent;
+import net.md_5.bungee.api.plugin.Listener;
+import net.md_5.bungee.event.EventHandler;
+
+import java.util.Map;
+
+public class BackendServerCalculator extends ContextCalculator<ProxiedPlayer> implements Listener {
+    private static final String WORLD_KEY = "world";
+
+    private static String getServer(ProxiedPlayer player) {
+        return player.getServer() == null ? null : (player.getServer().getInfo() == null ? null : player.getServer().getInfo().getName());
+    }
+
+    @Override
+    public MutableContextSet giveApplicableContext(ProxiedPlayer subject, MutableContextSet accumulator) {
+        String server = getServer(subject);
+
+        if (server != null) {
+            accumulator.add(Maps.immutableEntry(WORLD_KEY, server));
+        }
+
+        return accumulator;
+    }
+
+    @Override
+    public boolean isContextApplicable(ProxiedPlayer subject, Map.Entry<String, String> context) {
+        if (!context.getKey().equals(WORLD_KEY)) {
+            return false;
+        }
+
+        String server = getServer(subject);
+        return server != null && server.equals(context.getValue());
+    }
+
+    @EventHandler
+    public void onPlayerServerSwitch(ServerSwitchEvent e) {
+        pushUpdate(e.getPlayer(), Maps.immutableEntry("null", "null"), Maps.immutableEntry(WORLD_KEY, getServer(e.getPlayer())));
+    }
+}

bungee/src/main/java/me/lucko/luckperms/bungee/BungeeCalculatorFactory.java

@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.bungee;
+
+import lombok.AllArgsConstructor;
+
+import com.google.common.collect.ImmutableList;
+
+import me.lucko.luckperms.api.Contexts;
+import me.lucko.luckperms.common.calculators.AbstractCalculatorFactory;
+import me.lucko.luckperms.common.calculators.PermissionCalculator;
+import me.lucko.luckperms.common.calculators.PermissionProcessor;
+import me.lucko.luckperms.common.calculators.processors.MapProcessor;
+import me.lucko.luckperms.common.calculators.processors.RegexProcessor;
+import me.lucko.luckperms.common.calculators.processors.WildcardProcessor;
+import me.lucko.luckperms.common.core.model.User;
+
+@AllArgsConstructor
+public class BungeeCalculatorFactory extends AbstractCalculatorFactory {
+    private final LPBungeePlugin plugin;
+
+    @Override
+    public PermissionCalculator build(Contexts contexts, User user) {
+        ImmutableList.Builder<PermissionProcessor> processors = ImmutableList.builder();
+        processors.add(new MapProcessor());
+        if (plugin.getConfiguration().isApplyingWildcards()) {
+            processors.add(new WildcardProcessor());
+        }
+        if (plugin.getConfiguration().isApplyingRegex()) {
+            processors.add(new RegexProcessor());
+        }
+
+        return registerCalculator(new PermissionCalculator(plugin, user.getName(), processors.build()));
+    }
+}

bungee/src/main/java/me/lucko/luckperms/bungee/BungeeCommand.java

@@ -20,14 +20,15 @@
  *  SOFTWARE.
  */
 
-package me.lucko.luckperms;
+package me.lucko.luckperms.bungee;
 
 import com.google.common.base.Joiner;
 import com.google.common.base.Splitter;
-import me.lucko.luckperms.api.data.Callback;
-import me.lucko.luckperms.commands.CommandManager;
-import me.lucko.luckperms.commands.Util;
-import me.lucko.luckperms.constants.Patterns;
+
+import me.lucko.luckperms.common.commands.CommandManager;
+import me.lucko.luckperms.common.commands.utils.Util;
+import me.lucko.luckperms.common.constants.Patterns;
+
 import net.md_5.bungee.api.CommandSender;
 import net.md_5.bungee.api.plugin.Command;
 import net.md_5.bungee.api.plugin.TabExecutor;
@@ -35,25 +36,26 @@ import net.md_5.bungee.api.plugin.TabExecutor;
 import java.util.Arrays;
 
 class BungeeCommand extends Command implements TabExecutor {
+    private final LPBungeePlugin plugin;
     private final CommandManager manager;
 
-    BungeeCommand(CommandManager manager) {
+    BungeeCommand(LPBungeePlugin plugin, CommandManager manager) {
         super("luckpermsbungee", null, "bperms", "lpb", "bpermissions", "bp", "bperm");
+        this.plugin = plugin;
         this.manager = manager;
     }
 
     @Override
     public void execute(CommandSender sender, String[] args) {
         manager.onCommand(
-                BungeeSenderFactory.get().wrap(sender),
+                plugin.getSenderFactory().wrap(sender),
                 "bperms",
-                Util.stripQuotes(Splitter.on(Patterns.COMMAND_SEPARATOR).omitEmptyStrings().splitToList(Joiner.on(' ').join(args))),
-                Callback.empty()
+                Util.stripQuotes(Splitter.on(Patterns.COMMAND_SEPARATOR).omitEmptyStrings().splitToList(Joiner.on(' ').join(args)))
         );
     }
 
     @Override
     public Iterable<String> onTabComplete(CommandSender sender, String[] args) {
-        return manager.onTabComplete(BungeeSenderFactory.get().wrap(sender), Arrays.asList(args));
+        return manager.onTabComplete(plugin.getSenderFactory().wrap(sender), Arrays.asList(args));
     }
 }

bungee/src/main/java/me/lucko/luckperms/bungee/BungeeConfig.java

@@ -20,9 +20,10 @@
  *  SOFTWARE.
  */
 
-package me.lucko.luckperms;
+package me.lucko.luckperms.bungee;
+
+import me.lucko.luckperms.common.config.AbstractConfiguration;
 
-import me.lucko.luckperms.core.LPConfiguration;
 import net.md_5.bungee.config.Configuration;
 import net.md_5.bungee.config.ConfigurationProvider;
 import net.md_5.bungee.config.YamlConfiguration;
@@ -31,8 +32,13 @@ import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
 import java.nio.file.Files;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+import java.util.stream.Collectors;
 
-class BungeeConfig extends LPConfiguration<LPBungeePlugin> {
+class BungeeConfig extends AbstractConfiguration<LPBungeePlugin> {
     private Configuration configuration;
 
     BungeeConfig(LPBungeePlugin plugin) {
@@ -62,11 +68,6 @@ class BungeeConfig extends LPConfiguration<LPBungeePlugin> {
         }
     }
 
-    @Override
-    protected void set(String path, Object value) {
-        configuration.set(path, value);
-    }
-
     @Override
     protected String getString(String path, String def) {
         return configuration.getString(path, def);
@@ -81,4 +82,34 @@ class BungeeConfig extends LPConfiguration<LPBungeePlugin> {
     protected boolean getBoolean(String path, boolean def) {
         return configuration.getBoolean(path, def);
     }
+
+    @Override
+    protected List<String> getList(String path, List<String> def) {
+        return Optional.ofNullable(configuration.getStringList(path)).orElse(def);
+    }
+
+    @Override
+    protected List<String> getObjectList(String path, List<String> def) {
+        Configuration section = configuration.getSection(path);
+        if (section == null) {
+            return def;
+        }
+
+        return Optional.ofNullable(section.getKeys().stream().collect(Collectors.toList())).orElse(def);
+    }
+
+    @Override
+    protected Map<String, String> getMap(String path, Map<String, String> def) {
+        Map<String, String> map = new HashMap<>();
+        Configuration section = configuration.getSection(path);
+        if (section == null) {
+            return def;
+        }
+
+        for (String key : section.getKeys()) {
+            map.put(key, section.getString(key));
+        }
+
+        return map;
+    }
 }

bungee/src/main/java/me/lucko/luckperms/bungee/BungeeListener.java

@@ -20,18 +20,26 @@
  *  SOFTWARE.
  */
 
-package me.lucko.luckperms;
+package me.lucko.luckperms.bungee;
+
+import me.lucko.luckperms.api.Contexts;
+import me.lucko.luckperms.api.event.events.UserFirstLoginEvent;
+import me.lucko.luckperms.common.constants.Message;
+import me.lucko.luckperms.common.core.UuidCache;
+import me.lucko.luckperms.common.core.model.User;
+import me.lucko.luckperms.common.defaults.Rule;
+import me.lucko.luckperms.common.utils.AbstractListener;
 
-import me.lucko.luckperms.constants.Message;
-import me.lucko.luckperms.core.UuidCache;
-import me.lucko.luckperms.users.User;
-import me.lucko.luckperms.utils.AbstractListener;
 import net.md_5.bungee.api.chat.TextComponent;
 import net.md_5.bungee.api.connection.PendingConnection;
 import net.md_5.bungee.api.connection.ProxiedPlayer;
-import net.md_5.bungee.api.event.*;
+import net.md_5.bungee.api.event.LoginEvent;
+import net.md_5.bungee.api.event.PermissionCheckEvent;
+import net.md_5.bungee.api.event.PlayerDisconnectEvent;
+import net.md_5.bungee.api.event.PostLoginEvent;
 import net.md_5.bungee.api.plugin.Listener;
 import net.md_5.bungee.event.EventHandler;
+import net.md_5.bungee.event.EventPriority;
 
 import java.util.UUID;
 import java.util.concurrent.TimeUnit;
@@ -55,15 +63,30 @@ public class BungeeListener extends AbstractListener implements Listener {
 
         final ProxiedPlayer player = ((ProxiedPlayer) e.getSender());
 
-        BungeePlayerCache playerCache = plugin.getPlayerCache().get(plugin.getUuidCache().getUUID(player.getUniqueId()));
-        if (playerCache == null) {
+        User user = plugin.getUserManager().get(plugin.getUuidCache().getUUID(player.getUniqueId()));
+        if (user == null) {
             return;
         }
 
-        e.setHasPermission(playerCache.getPermissionValue(e.getPermission()));
+        if (user.getUserData() == null) {
+            plugin.getLog().warn("Player " + player.getName() + " does not have any user data setup.");
+            return;
+        }
+
+        Contexts contexts = new Contexts(
+                plugin.getContextManager().getApplicableContext(player),
+                plugin.getConfiguration().isIncludingGlobalPerms(),
+                plugin.getConfiguration().isIncludingGlobalWorldPerms(),
+                true,
+                plugin.getConfiguration().isApplyingGlobalGroups(),
+                plugin.getConfiguration().isApplyingGlobalWorldGroups(),
+                false
+        );
+
+        e.setHasPermission(user.getUserData().getPermissionData(contexts).getPermissionValue(e.getPermission()).asBoolean());
     }
 
-    @EventHandler
+    @EventHandler(priority = EventPriority.LOWEST)
     public void onPlayerLogin(LoginEvent e) {
         /* Delay the login here, as we want to cache UUID data before the player is connected to a backend bukkit server.
            This means that a player will have the same UUID across the network, even if parts of the network are running in
@@ -75,22 +98,48 @@ public class BungeeListener extends AbstractListener implements Listener {
             final PendingConnection c = e.getConnection();
 
             if (!cache.isOnlineMode()) {
-                UUID uuid = plugin.getDatastore().getUUID(c.getName());
+                UUID uuid = plugin.getStorage().getUUID(c.getName()).join();
                 if (uuid != null) {
                     cache.addToCache(c.getUniqueId(), uuid);
                 } else {
                     // No previous data for this player
+                    plugin.getApiProvider().fireEventAsync(new UserFirstLoginEvent(c.getUniqueId(), c.getName()));
                     cache.addToCache(c.getUniqueId(), c.getUniqueId());
-                    plugin.getDatastore().saveUUIDData(c.getName(), c.getUniqueId());
+                    plugin.getStorage().force().saveUUIDData(c.getName(), c.getUniqueId()).join();
                 }
             } else {
+                String name = plugin.getStorage().getName(c.getUniqueId()).join();
+                if (name == null) {
+                    plugin.getApiProvider().fireEventAsync(new UserFirstLoginEvent(c.getUniqueId(), c.getName()));
+                }
+
                 // Online mode, no cache needed. This is just for name -> uuid lookup.
-                plugin.getDatastore().saveUUIDData(c.getName(), c.getUniqueId());
+                plugin.getStorage().force().saveUUIDData(c.getName(), c.getUniqueId()).join();
             }
 
             // We have to make a new user on this thread whilst the connection is being held, or we get concurrency issues as the Bukkit server
             // and the BungeeCord server try to make a new user at the same time.
-            plugin.getDatastore().loadUser(cache.getUUID(c.getUniqueId()), c.getName());
+            plugin.getStorage().force().loadUser(cache.getUUID(c.getUniqueId()), c.getName()).join();
+            User user = plugin.getUserManager().get(cache.getUUID(c.getUniqueId()));
+            if (user == null) {
+                plugin.getLog().warn("Failed to load user: " + c.getName());
+            } else {
+                // Setup defaults for the user
+                boolean save = false;
+                for (Rule rule : plugin.getConfiguration().getDefaultAssignments()) {
+                    if (rule.apply(user)) {
+                        save = true;
+                    }
+                }
+
+                // If they were given a default, persist the new assignments back to the storage.
+                if (save) {
+                    plugin.getStorage().force().saveUser(user).join();
+                }
+
+                user.setupData(false); // Pretty nasty calculation call. Sets up the caching system so data is ready when the user joins.
+            }
+
             final long time = System.currentTimeMillis() - startTime;
             if (time >= 1000) {
                 plugin.getLog().warn("Processing login for " + c.getName() + " took " + time + "ms.");
@@ -102,25 +151,15 @@ public class BungeeListener extends AbstractListener implements Listener {
     @EventHandler
     public void onPlayerPostLogin(PostLoginEvent e) {
         final ProxiedPlayer player = e.getPlayer();
-        final UUID internal = plugin.getUuidCache().getUUID(e.getPlayer().getUniqueId());
-        final User user = plugin.getUserManager().get(internal);
+        final User user = plugin.getUserManager().get(plugin.getUuidCache().getUUID(e.getPlayer().getUniqueId()));
 
         if (user == null) {
             plugin.getProxy().getScheduler().schedule(plugin, () -> player.sendMessage(WARN_MESSAGE), 3, TimeUnit.SECONDS);
-        } else {
-            plugin.getPlayerCache().put(internal, new BungeePlayerCache(plugin, e.getPlayer().getName()));
-            user.refreshPermissions();
         }
     }
 
     @EventHandler
     public void onPlayerQuit(PlayerDisconnectEvent e) {
-        plugin.getPlayerCache().remove(plugin.getUuidCache().getUUID(e.getPlayer().getUniqueId()));
         onLeave(e.getPlayer().getUniqueId());
     }
-
-    @EventHandler
-    public void onPlayerServerSwitch(ServerSwitchEvent e) {
-        refreshPlayer(e.getPlayer().getUniqueId());
-    }
 }

bungee/src/main/java/me/lucko/luckperms/bungee/BungeeSenderFactory.java

@@ -20,26 +20,24 @@
  *  SOFTWARE.
  */
 
-package me.lucko.luckperms;
+package me.lucko.luckperms.bungee;
+
+import me.lucko.luckperms.common.LuckPermsPlugin;
+import me.lucko.luckperms.common.commands.sender.SenderFactory;
+import me.lucko.luckperms.common.constants.Constants;
 
-import lombok.AccessLevel;
-import lombok.NoArgsConstructor;
-import me.lucko.luckperms.commands.SenderFactory;
-import me.lucko.luckperms.constants.Constants;
 import net.md_5.bungee.api.CommandSender;
 import net.md_5.bungee.api.chat.TextComponent;
 import net.md_5.bungee.api.connection.ProxiedPlayer;
+import net.md_5.bungee.chat.ComponentSerializer;
+
+import io.github.mkremins.fanciful.FancyMessage;
 
 import java.util.UUID;
 
-@NoArgsConstructor(access = AccessLevel.PRIVATE)
 public class BungeeSenderFactory extends SenderFactory<CommandSender> {
-    private static BungeeSenderFactory instance = null;
-    public static synchronized BungeeSenderFactory get() {
-        if (instance == null) {
-            instance = new BungeeSenderFactory();
-        }
-        return instance;
+    public BungeeSenderFactory(LuckPermsPlugin plugin) {
+        super(plugin);
     }
 
     @Override
@@ -47,7 +45,7 @@ public class BungeeSenderFactory extends SenderFactory<CommandSender> {
         if (sender instanceof ProxiedPlayer) {
             return sender.getName();
         }
-        return Constants.getConsoleName();
+        return Constants.CONSOLE_NAME;
     }
 
     @Override
@@ -55,7 +53,7 @@ public class BungeeSenderFactory extends SenderFactory<CommandSender> {
         if (sender instanceof ProxiedPlayer) {
             return ((ProxiedPlayer) sender).getUniqueId();
         }
-        return Constants.getConsoleUUID();
+        return Constants.CONSOLE_UUID;
     }
 
     @Override
@@ -63,6 +61,15 @@ public class BungeeSenderFactory extends SenderFactory<CommandSender> {
         sender.sendMessage(new TextComponent(s));
     }
 
+    @Override
+    protected void sendMessage(CommandSender sender, FancyMessage message) {
+        try {
+            sender.sendMessage(ComponentSerializer.parse(message.toJSONString()));
+        } catch (Exception e) {
+            sendMessage(sender, message.toOldMessageFormat());
+        }
+    }
+
     @Override
     protected boolean hasPermission(CommandSender sender, String node) {
         return sender.hasPermission(node);