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A Java 7 wrapper of the TeamSpeak 3 Server Query API.
There is a newer version: 1.3.1
package com.github.theholywaffle.teamspeak3;

/*
 * #%L
 * TeamSpeak 3 Java API
 * %%
 * Copyright (C) 2014 Bert De Geyter
 * %%
 * 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.
 * #L%
 */

import com.github.theholywaffle.teamspeak3.api.Callback;
import com.github.theholywaffle.teamspeak3.api.exception.TS3ConnectionFailedException;
import com.github.theholywaffle.teamspeak3.api.reconnect.ConnectionHandler;
import com.github.theholywaffle.teamspeak3.commands.CQuit;
import com.github.theholywaffle.teamspeak3.commands.Command;
import com.github.theholywaffle.teamspeak3.log.LogHandler;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.logging.Handler;
import java.util.logging.Level;
import java.util.logging.Logger;

public class TS3Query {

	public static class FloodRate {

		public static final FloodRate DEFAULT = new FloodRate(350);
		public static final FloodRate UNLIMITED = new FloodRate(0);

		public static FloodRate custom(int milliseconds) {
			if (milliseconds < 0) throw new IllegalArgumentException("Timeout must be positive");
			return new FloodRate(milliseconds);
		}

		private final int ms;

		private FloodRate(int ms) {
			this.ms = ms;
		}

		public int getMs() {
			return ms;
		}
	}

	public static final Logger log = Logger.getLogger(TS3Query.class.getName());

	private final ConnectionHandler connectionHandler;
	private final EventManager eventManager = new EventManager();
	private final ExecutorService userThreadPool = Executors.newCachedThreadPool();
	private final FileTransferHelper fileTransferHelper;
	private final TS3Api api;
	private final TS3ApiAsync asyncApi;
	private final TS3Config config;

	private QueryIO io;

	private volatile boolean connected;

	/**
	 * Creates a TS3Query that connects to a TS3 server at
	 * {@code localhost:10011} using default settings.
	 */
	public TS3Query() {
		this(new TS3Config());
	}

	/**
	 * Creates a customized TS3Query that connects to a server
	 * specified by {@code config}.
	 *
	 * @param config
	 * 		configuration for this TS3Query
	 */
	public TS3Query(TS3Config config) {
		log.setUseParentHandlers(false);
		log.addHandler(new LogHandler(config.getDebugToFile()));
		log.setLevel(config.getDebugLevel());
		this.config = config;
		this.fileTransferHelper = new FileTransferHelper(config.getHost());
		this.connectionHandler = config.getReconnectStrategy().create(config.getConnectionHandler());
		this.connected = false;

		this.api = new TS3Api(this);
		this.asyncApi = new TS3ApiAsync(this);
	}

	// PUBLIC

	public void connect() {
		QueryIO oldIO = io;
		if (oldIO != null) {
			oldIO.disconnect();
		}

		try {
			io = new QueryIO(this, config);
			connected = true;
		} catch (TS3ConnectionFailedException conFailed) {
			throw conFailed;
		}

		try {
			connectionHandler.onConnect(this);
		} catch (Throwable t) {
			log.log(Level.SEVERE, "ConnectionHandler threw exception in connect handler", t);
		}
		io.continueFrom(oldIO);
	}

	/**
	 * Removes and closes all used resources to the teamspeak server.
	 */
	public void exit() {
		if (connected) {
			// Send a quit command synchronously
			// This will guarantee that all previously sent commands have been processed
			doCommand(new CQuit());
		}

		io.disconnect();
		userThreadPool.shutdown();
		for (final Handler lh : log.getHandlers()) {
			log.removeHandler(lh);
		}
	}

	public TS3Api getApi() {
		return api;
	}

	public TS3ApiAsync getAsyncApi() {
		return asyncApi;
	}

	// INTERNAL

	boolean doCommand(Command c) {
		io.enqueueCommand(c);
		io.awaitCommand(c);

		if (!c.isAnswered()) {
			log.severe("Command " + c.getName() + " was not answered in time.");
			return false;
		}

		return c.getError().isSuccessful();
	}

	void doCommandAsync(Command c, Callback callback) {
		if (callback != null) c.setCallback(callback);
		io.enqueueCommand(c);
	}

	void submitUserTask(Runnable task) {
		userThreadPool.submit(task);
	}

	EventManager getEventManager() {
		return eventManager;
	}

	FileTransferHelper getFileTransferHelper() {
		return fileTransferHelper;
	}

	void fireDisconnect() {
		connected = false;

		userThreadPool.submit(new Runnable() {
			@Override
			public void run() {
				try {
					connectionHandler.onDisconnect(TS3Query.this);
				} catch (Throwable t) {
					log.log(Level.SEVERE, "ConnectionHandler threw exception in disconnect handler", t);
				}

				if (!connected) {
					exit();
				}
			}
		});
	}
}