Refactored the aforementioned player data

Now it will only load a yaml file once at a time
Each user class which has a separate folder now has a separate static and non-static shared storage
Also some uncache fixes for MC that I haven't committed before

.github/workflows/codeql-analysis.yml

@@ -0,0 +1,71 @@
+# For most projects, this workflow file will not need changing; you simply need
+# to commit it to your repository.
+#
+# You may wish to alter this file to override the set of languages analyzed,
+# or to provide custom queries or build logic.
+name: "CodeQL"
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: [ master ]
+  schedule:
+    - cron: '0 10 * * 1'
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        # Override automatic language detection by changing the below list
+        # Supported options are ['csharp', 'cpp', 'go', 'java', 'javascript', 'python']
+        language: [ 'java' ]
+        # Learn more...
+        # https://docs.github.com/en/github/finding-security-vulnerabilities-and-errors-in-your-code/configuring-code-scanning#overriding-automatic-language-detection
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+        with:
+          # We must fetch at least the immediate parents so that if this is
+          # a pull request then we can checkout the head.
+          fetch-depth: 2
+
+      # If this run was triggered by a pull request event, then checkout
+      # the head of the pull request instead of the merge commit.
+      - run: git checkout HEAD^2
+        if: ${{ github.event_name == 'pull_request' }}
+
+      # Initializes the CodeQL tools for scanning.
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v1
+        with:
+          languages: ${{ matrix.language }}
+          # If you wish to specify custom queries, you can do so here or in a config file.
+          # By default, queries listed here will override any specified in a config file.
+          # Prefix the list here with "+" to use these queries and those in the config file.
+          # queries: ./path/to/local/query, your-org/your-repo/queries@main
+
+      # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
+      # If this step fails, then you should remove it and run the build manually (see below)
+      - name: Autobuild
+        uses: github/codeql-action/autobuild@v1
+
+      # ℹ️ Command-line programs to run using the OS shell.
+      # 📚 https://git.io/JvXDl
+
+      # ✏️ If the Autobuild fails above, remove it and uncomment the following three lines
+      #    and modify them (or add more) to build your code if your project
+      #    uses a compiled language
+
+      #- run: |
+      #   make bootstrap
+      #   make release
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v1

Chroma-Core/src/main/java/buttondevteam/lib/player/ChromaGamerBase.java

@@ -5,7 +5,6 @@ import buttondevteam.core.component.channel.Channel;
 import buttondevteam.lib.TBMCCoreAPI;
 import buttondevteam.lib.architecture.ConfigData;
 import buttondevteam.lib.architecture.IHaveConfig;
-import com.google.common.collect.HashBiMap;
 import lombok.Getter;
 import lombok.val;
 import org.bukkit.Bukkit;
@@ -16,6 +15,7 @@ import javax.annotation.Nullable;
 import java.io.File;
 import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.Map;
 import java.util.Optional;
 import java.util.function.Consumer;
 import java.util.function.Function;
@@ -24,35 +24,39 @@ import java.util.function.Supplier;
 @ChromaGamerEnforcer
 public abstract class ChromaGamerBase {
 	private static final String TBMC_PLAYERS_DIR = "TBMC/players/";
-	private static final HashBiMap<Class<? extends ChromaGamerBase>, String> playerTypes = HashBiMap.create();
-	private static final HashMap<Class<? extends ChromaGamerBase>, Supplier<? extends ChromaGamerBase>> constructors = new HashMap<>();
-	private static final HashMap<Class<? extends ChromaGamerBase>, HashMap<String, ChromaGamerBase>> userCache = new HashMap<>();
 	private static final ArrayList<Function<CommandSender, ? extends Optional<? extends ChromaGamerBase>>> senderConverters = new ArrayList<>();
+	private static final HashMap<Class<? extends ChromaGamerBase>, StaticUserData<?>> staticDataMap = new HashMap<>();
 
 	/**
 	 * Use {@link #getConfig()} where possible; the 'id' must be always set
 	 */
-	protected YamlConfiguration plugindata;
+	//protected YamlConfiguration plugindata;
 
 	@Getter
 	protected final IHaveConfig config = new IHaveConfig(this::save);
-
+	protected CommonUserData<?> commonUserData;
-	public void init() {
-		config.reset(plugindata);
-	}
 
 	/**
 	 * Used for connecting with every type of user ({@link #connectWith(ChromaGamerBase)}) and to init the configs.
 	 */
 	public static <T extends ChromaGamerBase> void RegisterPluginUserClass(Class<T> userclass, Supplier<T> constructor) {
-		if (userclass.isAnnotationPresent(UserClass.class))
+		Class<? extends T> cl;
-			playerTypes.put(userclass, userclass.getAnnotation(UserClass.class).foldername());
+		String folderName;
-		else if (userclass.isAnnotationPresent(AbstractUserClass.class))
+		if (userclass.isAnnotationPresent(UserClass.class)) {
-			playerTypes.put(userclass.getAnnotation(AbstractUserClass.class).prototype(),
+			cl = userclass;
-				userclass.getAnnotation(AbstractUserClass.class).foldername());
+			folderName = userclass.getAnnotation(UserClass.class).foldername();
-		else // <-- Really important
+		} else if (userclass.isAnnotationPresent(AbstractUserClass.class)) {
+			var ucl = userclass.getAnnotation(AbstractUserClass.class).prototype();
+			if (!userclass.isAssignableFrom(ucl))
+				throw new RuntimeException("The prototype class (" + ucl.getSimpleName() + ") must be a subclass of the userclass parameter (" + userclass.getSimpleName() + ")!");
+			//noinspection unchecked
+			cl = (Class<? extends T>) ucl;
+			folderName = userclass.getAnnotation(AbstractUserClass.class).foldername();
+		} else // <-- Really important
 			throw new RuntimeException("Class not registered as a user class! Use @UserClass or TBMCPlayerBase");
-		constructors.put(userclass, constructor);
+		var sud = new StaticUserData<T>(folderName);
+		sud.getConstructors().put(cl, constructor);
+		staticDataMap.put(userclass, sud);
 	}
 
 	/**
@@ -77,34 +81,54 @@ public abstract class ChromaGamerBase {
 	 * @return The type for the given folder name or null if not found
 	 */
 	public static Class<? extends ChromaGamerBase> getTypeForFolder(String foldername) {
-		return playerTypes.inverse().get(foldername);
+		synchronized (staticDataMap) {
+			return staticDataMap.entrySet().stream().filter(e -> e.getValue().getFolder().equalsIgnoreCase(foldername))
+				.map(Map.Entry::getKey).findAny().orElse(null);
+		}
 	}
 
 	/***
-	 * Loads a user from disk and returns the user object. Make sure to use the subclasses' methods, where possible, like {@link TBMCPlayerBase#getPlayer(java.util.UUID, Class)}
+	 * Retrieves a user from cache or loads it from disk.
 	 *
-	 * @param fname Filename without .yml, usually UUID
+	 * @param fname Filename without .yml, the user's identifier for that type
 	 * @param cl User class
 	 * @return The user object
 	 */
-	public static <T extends ChromaGamerBase> T getUser(String fname, Class<T> cl) {
+	public static synchronized <T extends ChromaGamerBase> T getUser(String fname, Class<T> cl) {
-		HashMap<String, ? extends ChromaGamerBase> uc;
+		StaticUserData<?> staticUserData = null;
-		if (userCache.containsKey(cl)) {
+		for (var sud : staticDataMap.entrySet()) {
-			uc = userCache.get(cl);
+			if (sud.getKey().isAssignableFrom(cl)) {
-			if (uc.containsKey(fname))
+				staticUserData = sud.getValue();
-				//noinspection unchecked
+				break;
-				return (T) uc.get(fname);
 			}
-		@SuppressWarnings("unchecked") T obj = (T) constructors.get(cl).get();
+		}
-		final String folder = getFolderForType(cl);
+		if (staticUserData == null)
+			throw new RuntimeException("User class not registered! Use @UserClass or @AbstractUserClass");
+		var commonUserData = staticUserData.getUserDataMap().get(fname);
+		if (commonUserData == null) {
+			final String folder = staticUserData.getFolder();
 			final File file = new File(TBMC_PLAYERS_DIR + folder, fname + ".yml");
 			file.getParentFile().mkdirs();
-		obj.plugindata = YamlConfiguration.loadConfiguration(file);
+			var playerData = YamlConfiguration.loadConfiguration(file);
-		obj.plugindata.set(folder + "_id", fname);
+			commonUserData = new CommonUserData<>(playerData);
-		obj.init();
+			playerData.set(staticUserData.getFolder() + "_id", fname);
-		synchronized (userCache) {
+			staticUserData.getUserDataMap().put(fname, commonUserData);
-			userCache.computeIfAbsent(cl, key -> new HashMap<>()).put(fname, obj);
 		}
+		if (commonUserData.getUserCache().containsKey(cl))
+			return (T) commonUserData.getUserCache().get(cl);
+		T obj;
+		if (staticUserData.getConstructors().containsKey(cl))
+			//noinspection unchecked
+			obj = (T) staticUserData.getConstructors().get(cl).get();
+		else {
+			try {
+				obj = cl.getConstructor().newInstance();
+			} catch (Exception e) {
+				throw new RuntimeException("Failed to create new instance of user of type " + cl.getSimpleName() + "!", e);
+			}
+		}
+		obj.commonUserData = commonUserData;
+		obj.init();
 		obj.scheduleUncache();
 		return obj;
 	}
@@ -134,9 +158,15 @@ public abstract class ChromaGamerBase {
 	}
 
 	public static void saveUsers() {
-		for (var users : userCache.values())
+		synchronized (staticDataMap) {
-			for (var user : users.values())
+			for (var sud : staticDataMap.values())
-				ConfigData.saveNow(user.plugindata); //Calls save()
+				for (var cud : sud.getUserDataMap().values())
+					ConfigData.saveNow(cud.getPlayerData()); //Calls save()
+		}
+	}
+
+	protected void init() {
+		config.reset(commonUserData.getPlayerData());
 	}
 
 	/**
@@ -144,17 +174,22 @@ public abstract class ChromaGamerBase {
 	 */
 	protected void save() {
 		try {
-			if (plugindata.getKeys(false).size() > 0)
+			if (commonUserData.getPlayerData().getKeys(false).size() > 0)
-				plugindata.save(new File(TBMC_PLAYERS_DIR + getFolder(), getFileName() + ".yml"));
+				commonUserData.getPlayerData().save(new File(TBMC_PLAYERS_DIR + getFolder(), getFileName() + ".yml"));
 		} catch (Exception e) {
 			TBMCCoreAPI.SendException("Error while saving player to " + getFolder() + "/" + getFileName() + ".yml!", e, MainPlugin.Instance);
 		}
 	}
 
+	/**
+	 * Removes the user from the cache. This will be called automatically after some time by default.
+	 */
 	public void uncache() {
+		final var userCache = commonUserData.getUserCache();
+		//noinspection SynchronizationOnLocalVariableOrMethodParameter
 		synchronized (userCache) {
-			var c = userCache.get(getClass());
+			if (userCache.containsKey(getClass()))
-			if (c != null) if (c.remove(getFileName()) != this)
+				if (userCache.remove(getClass()) != this)
 					throw new IllegalStateException("A different player instance was cached!");
 		}
 	}
@@ -164,60 +199,64 @@ public abstract class ChromaGamerBase {
 	}
 
 	/**
-	 * Connect two accounts. Do not use for connecting two Minecraft accounts or similar. Also make sure you have the "id" tag set
+	 * Connect two accounts. Do not use for connecting two Minecraft accounts or similar. Also make sure you have the "id" tag set.
 	 *
 	 * @param user The account to connect with
 	 */
 	public final <T extends ChromaGamerBase> void connectWith(T user) {
 		// Set the ID, go through all linked files and connect them as well
-		if (!playerTypes.containsKey(getClass()))
-			throw new RuntimeException("Class not registered as a user class! Use TBMCCoreAPI.RegisterUserClass");
 		final String ownFolder = getFolder();
 		final String userFolder = user.getFolder();
 		if (ownFolder.equalsIgnoreCase(userFolder))
 			throw new RuntimeException("Do not connect two accounts of the same type! Type: " + ownFolder);
-		user.plugindata.set(ownFolder + "_id", plugindata.getString(ownFolder + "_id"));
+		var ownData = commonUserData.getPlayerData();
-		plugindata.set(userFolder + "_id", user.plugindata.getString(userFolder + "_id"));
+		var userData = user.commonUserData.getPlayerData();
+		userData.set(ownFolder + "_id", ownData.getString(ownFolder + "_id"));
+		ownData.set(userFolder + "_id", userData.getString(userFolder + "_id"));
+		config.signalChange();
+		user.config.signalChange();
 		Consumer<YamlConfiguration> sync = sourcedata -> {
-			final String sourcefolder = sourcedata == plugindata ? ownFolder : userFolder;
+			final String sourcefolder = sourcedata == ownData ? ownFolder : userFolder;
 			final String id = sourcedata.getString(sourcefolder + "_id");
-			for (val entry : playerTypes.entrySet()) { // Set our ID in all files we can find, both from our connections and the new ones
+			for (val entry : staticDataMap.entrySet()) { // Set our ID in all files we can find, both from our connections and the new ones
 				if (entry.getKey() == getClass() || entry.getKey() == user.getClass())
 					continue;
-				final String otherid = sourcedata.getString(entry.getValue() + "_id");
+				var entryFolder = entry.getValue().getFolder();
+				final String otherid = sourcedata.getString(entryFolder + "_id");
 				if (otherid == null)
 					continue;
 				ChromaGamerBase cg = getUser(otherid, entry.getKey());
-				cg.plugindata.set(sourcefolder + "_id", id); // Set new IDs
+				var cgData = cg.commonUserData.getPlayerData();
-				cg.config.signalChange();
+				cgData.set(sourcefolder + "_id", id); // Set new IDs
-				for (val item : playerTypes.entrySet()) {
+				for (val item : staticDataMap.entrySet()) {
-					if (sourcedata.contains(item.getValue() + "_id")) {
+					var itemFolder = item.getValue().getFolder();
-						cg.plugindata.set(item.getValue() + "_id", sourcedata.getString(item.getValue() + "_id")); // Set all existing IDs
+					if (sourcedata.contains(itemFolder + "_id")) {
-						cg.config.signalChange();
+						cgData.set(itemFolder + "_id", sourcedata.getString(itemFolder + "_id")); // Set all existing IDs
 					}
 				}
+				cg.config.signalChange();
 			}
 		};
-		sync.accept(plugindata);
+		sync.accept(ownData);
-		sync.accept(user.plugindata);
+		sync.accept(userData);
 	}
 
 	/**
-	 * Retunrs the ID for the T typed player object connected with this one or null if no connection found.
+	 * Returns the ID for the T typed player object connected with this one or null if no connection found.
 	 *
 	 * @param cl The player class to get the ID from
 	 * @return The ID or null if not found
 	 */
 	public final <T extends ChromaGamerBase> String getConnectedID(Class<T> cl) {
-		return plugindata.getString(getFolderForType(cl) + "_id");
+		return commonUserData.getPlayerData().getString(getFolderForType(cl) + "_id");
 	}
 
 	/**
-	 * Returns this player as a plugin player. This will return a new instance unless the player is online.<br>
+	 * Returns a player instance of the given type that represents the same player. This will return a new instance unless the player is cached.<br>
-	 * Make sure to close both the returned and this object. A try-with-resources block or two can help.<br>
+	 * If the class is a subclass of the current class then the same ID is used, otherwise, a connected ID is used, if found.
 	 *
 	 * @param cl The target player class
-	 * @return The player as a {@link T} object or null if not having an account there
+	 * @return The player as a {@link T} object or null if the user doesn't have an account there
 	 */
 	@SuppressWarnings("unchecked")
 	@Nullable
@@ -229,19 +268,23 @@ public abstract class ChromaGamerBase {
 			throw new RuntimeException("The specified class " + cl.getSimpleName() + " isn't registered!");
 		if (newfolder.equals(getFolder())) // If in the same folder, the same filename is used
 			return getUser(getFileName(), cl);
-		if (!plugindata.contains(newfolder + "_id"))
+		var playerData = commonUserData.getPlayerData();
+		if (!playerData.contains(newfolder + "_id"))
 			return null;
-		return getUser(plugindata.getString(newfolder + "_id"), cl);
+		return getUser(playerData.getString(newfolder + "_id"), cl);
 	}
 
 	/**
-	 * This method returns the filename for this player data. For example, for Minecraft-related data, MC UUIDs, for Discord data, use Discord IDs, etc.<br>
+	 * This method returns the filename for this player data. For example, for Minecraft-related data, MC UUIDs, for Discord data, Discord IDs, etc.<br>
 	 * <b>Does not include .yml</b>
 	 */
 	public final String getFileName() {
-		return plugindata.getString(getFolder() + "_id");
+		return commonUserData.getPlayerData().getString(getFolder() + "_id");
 	}
 
+	/**
+	 * This method returns the folder that this player data is stored in. For example: "minecraft".
+	 */
 	public final String getFolder() {
 		return getFolderForType(getClass());
 	}

Chroma-Core/src/main/java/buttondevteam/lib/player/CommonUserData.java

@@ -0,0 +1,19 @@
+package buttondevteam.lib.player;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+import org.bukkit.configuration.file.YamlConfiguration;
+
+import java.util.HashMap;
+
+/**
+ * Per user, regardless of actual type
+ *
+ * @param <T> The user class, may be abstract
+ */
+@Getter
+@RequiredArgsConstructor
+public class CommonUserData<T extends ChromaGamerBase> {
+	private final HashMap<Class<? extends T>, ? extends T> userCache = new HashMap<>();
+	private final YamlConfiguration playerData;
+}

Chroma-Core/src/main/java/buttondevteam/lib/player/StaticUserData.java

@@ -0,0 +1,23 @@
+package buttondevteam.lib.player;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+import java.util.HashMap;
+import java.util.function.Supplier;
+
+/**
+ * Per user class
+ *
+ * @param <T> The user class type, may be abstract
+ */
+@Getter
+@RequiredArgsConstructor
+public class StaticUserData<T extends ChromaGamerBase> {
+	private final HashMap<Class<? extends T>, Supplier<T>> constructors = new HashMap<>();
+	/**
+	 * Key: User ID
+	 */
+	private final HashMap<String, CommonUserData<?>> userDataMap = new HashMap<>();
+	private final String folder;
+}

Chroma-Core/src/main/java/buttondevteam/lib/player/TBMCPlayerBase.java

@@ -24,11 +24,11 @@ public abstract class TBMCPlayerBase extends ChromaGamerBase {
 	}
 
 	public ConfigData<String> PlayerName() {
-		return config.getData("PlayerName", "");
+		return super.config.getData("PlayerName", "");
 	}
 
 	/**
-	 * Get player as a plugin player
+	 * Get player as a plugin player.
 	 *
 	 * @param uuid The UUID of the player to get
 	 * @param cl   The type of the player
@@ -36,7 +36,7 @@ public abstract class TBMCPlayerBase extends ChromaGamerBase {
 	 */
 	public static <T extends TBMCPlayerBase> T getPlayer(UUID uuid, Class<T> cl) {
 		var player = ChromaGamerBase.getUser(uuid.toString(), cl);
-		if (player.uuid.equals(uuid))
+		if (!player.getUUID().equals(uuid)) //It will be set from the filename because we check it for scheduling the uncache.
 			throw new IllegalStateException("Player UUID differs after converting from and to string...");
 		return player;
 	}
@@ -44,7 +44,6 @@ public abstract class TBMCPlayerBase extends ChromaGamerBase {
 	@Override
 	public void init() {
 		super.init();
-		uuid = UUID.fromString(getFileName());
 
 		String pluginname;
 		if (getClass().isAnnotationPresent(PlayerClass.class))
@@ -52,42 +51,34 @@ public abstract class TBMCPlayerBase extends ChromaGamerBase {
 		else
 			throw new RuntimeException("Class not defined as player class! Use @PlayerClass");
 
-		var section = super.plugindata.getConfigurationSection(pluginname);
+		var playerData = commonUserData.getPlayerData();
-		if (section == null) section = super.plugindata.createSection(pluginname);
+		var section = playerData.getConfigurationSection(pluginname);
+		if (section == null) section = playerData.createSection(pluginname);
 		config.reset(section);
 	}
 
 	@Override
-	protected void scheduleUncache() { //Don't schedule it, it will happen on quit
+	protected void scheduleUncache() { //Don't schedule it, it will happen on quit - if the player is online
+		var p = Bukkit.getPlayer(getUUID());
+		if (p == null || !p.isOnline())
+			super.scheduleUncache();
 	}
 
 	/**
-	 * This method returns a TBMC player from their name. Calling this method may return an offline player which will load it, therefore it's highly recommended to use {@link #close()} to unload the
+	 * This method returns a TBMC player from their name. See {@link Bukkit#getOfflinePlayer(String)}.
-	 * player data. Using try-with-resources may be the easiest way to achieve this. Example:
-	 *
-	 * <pre>
-	 * {@code
-	 * try(TBMCPlayer player = getFromName(p))
-	 * {
-	 * 	...
-	 * }
-	 * </pre>
 	 *
 	 * @param name The player's name
 	 * @return The {@link TBMCPlayer} object for the player
 	 */
-	public static <T extends TBMCPlayerBase> T getFromName(String name, Class<T> cl) {
 	@SuppressWarnings("deprecation")
+	public static <T extends TBMCPlayerBase> T getFromName(String name, Class<T> cl) {
 		OfflinePlayer p = Bukkit.getOfflinePlayer(name);
-		if (p != null)
 		return getPlayer(p.getUniqueId(), cl);
-		else
-			return null;
 	}
 
 	@Override
 	protected void save() {
-		Set<String> keys = plugindata.getKeys(false);
+		Set<String> keys = commonUserData.getPlayerData().getKeys(false);
 		if (keys.size() > 1) // PlayerName is always saved, but we don't need a file for just that
 			super.save();
 	}