Loaders are observable. Modules refactoring

- Now it is possible to monitor loaders and tasks they perform
- Now it is NOT possible to add  dublicate tasks and modules

src/main/java/ru/windcorp/progressia/client/audio/AudioSystem.java

@@ -31,14 +31,13 @@ public class AudioSystem {
 		Thread shutdownHook = new Thread(AudioManager::closeAL, "AL Shutdown Hook");
 		Runtime.getRuntime().addShutdownHook(shutdownHook);
 
-		Task t = new Task("AudioSystem:Initialize") {
+		Task t = new Task("AudioSystem:Initialize", audioModule) {
 			@Override
 			protected void perform() {
 				loadAudioData();
 				LogManager.getLogger().info("Audio data is loaded");
 			}
 		};
-		audioModule.addTask(t);
 		TaskManager.getInstance().registerModule(audioModule);
 	}
 

src/main/java/ru/windcorp/progressia/common/modules/Module.java

@@ -2,16 +2,13 @@ package ru.windcorp.progressia.common.modules;
 
 import ru.windcorp.progressia.common.util.namespaces.Namespaced;
 
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
+import java.util.*;
 
 public class Module extends Namespaced {
 
 	private final List<Task> tasks = new ArrayList<>();
 	private final Map<String, String> meta = new HashMap<>();
-	private final boolean done = false;
+	private final Map<String, String> unmodifiableMeta = Collections.unmodifiableMap(meta);
 
 
 	public Module(String id) {
@@ -19,7 +16,7 @@ public class Module extends Namespaced {
 	}
 
 	public Map<String, String> getMeta() {
-		return meta;
+		return unmodifiableMeta;
 	}
 
 	public List<Task> getTasks() {
@@ -27,19 +24,8 @@ public class Module extends Namespaced {
 	}
 
 	public void addTask(Task task) {
+		task.setOwner(this);
 		tasks.add(task);
 	}
 
-	/**
-	 * @return false - not all tasks are done
-	 */
-	public boolean done() {
-		for (Task t : tasks) {
-			if (!t.isDone()) {
-				return false;
-			}
-		}
-
-		return true;
-	}
 }

src/main/java/ru/windcorp/progressia/common/modules/Task.java

@@ -1,5 +1,6 @@
 package ru.windcorp.progressia.common.modules;
 
+import ru.windcorp.progressia.common.util.crash.CrashReports;
 import ru.windcorp.progressia.common.util.namespaces.Namespaced;
 
 import java.util.ArrayList;
@@ -12,11 +13,17 @@ public abstract class Task
 	List<Task> requiredTasks = new ArrayList<>();
 	private boolean isDone = false;
 	private boolean isActive = false;
+	private Module owner;
 
-	protected Task(String id) {
+	public Task(String id) {
 		super(id);
 	}
 
+	public Task(String id, Module module) {
+		this(id);
+		module.addTask(this);
+	}
+
 	@Override
 	public void run() {
 		isActive = true;
@@ -50,4 +57,19 @@ public abstract class Task
 	public void addRequiredTask(Task task) {
 		requiredTasks.add(task);
 	}
+
+	public void setOwner(Module module) {
+		if(owner != null) {
+			CrashReports.crash(
+					new Exception("Owner is not null")
+					, "Could not set %s as owner of %s, because %s is already owner of it.",
+					module.getId(), this.getId(), this.getOwner().getId());
+		} else {
+			owner = module;
+		}
+	}
+
+	public Module getOwner() {
+		return owner;
+	}
 }

src/main/java/ru/windcorp/progressia/common/modules/TaskManager.java

@@ -1,11 +1,9 @@
 package ru.windcorp.progressia.common.modules;
 
-
 import org.apache.logging.log4j.LogManager;
 import ru.windcorp.progressia.common.util.crash.CrashReports;
 
-import java.util.ArrayList;
-import java.util.List;
+import java.util.*;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicInteger;
@@ -14,17 +12,24 @@ import static java.util.concurrent.Executors.newFixedThreadPool;
 
 public class TaskManager {
 	private static final TaskManager instance = new TaskManager();
-	private final List<Task> tasks = new ArrayList<>();
-	private final List<Module> modules = new ArrayList<>();
+
+	private final Set<Task> tasks = new HashSet<>();
+	private final Set<Module> modules = new HashSet<>();
 	private final ExecutorService executorService;
+
 	private final AtomicBoolean loadingDone;
 	private final AtomicInteger activeThreadsCount;
 
+	private final Map<Thread, Task> loadersMonitorMap;
+	Map<Thread, Task> unmodifiableLoadersMonitorMap;
+
 	private TaskManager() {
 		loadingDone = new AtomicBoolean(false);
 		activeThreadsCount = new AtomicInteger(0);
 		executorService = newFixedThreadPool(
 				Runtime.getRuntime().availableProcessors(), Thread::new);
+		loadersMonitorMap = new HashMap<>(Runtime.getRuntime().availableProcessors());
+		unmodifiableLoadersMonitorMap = Collections.unmodifiableMap(loadersMonitorMap);
 	}
 
 	public static TaskManager getInstance() {
@@ -48,7 +53,9 @@ public class TaskManager {
 					Task t = getRunnableTask();
 					if (t != null) {
 						activeThreadsCount.incrementAndGet();
+						loadersMonitorMap.put(Thread.currentThread(), t);
 						t.run();
+						loadersMonitorMap.put(Thread.currentThread(), null);
 						activeThreadsCount.decrementAndGet();
 						synchronized (this) {
 							notifyAll();
@@ -104,4 +111,8 @@ public class TaskManager {
 		}
 	}
 
+	public Map<Thread, Task> getLoadersMonitorMap() {
+		return unmodifiableLoadersMonitorMap;
+	}
+
 }