BinRpcNetworkService.java

/**
 * Copyright (c) 2010-2016 by the respective copyright holders.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 */
package org.openhab.binding.homematic.internal.communicator.server;

import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

import org.openhab.binding.homematic.internal.common.HomematicConfig;
import org.openhab.binding.homematic.internal.common.HomematicContext;
import org.openhab.binding.homematic.internal.communicator.HomematicCallbackReceiver;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Waits for a message from the Homematic server and starts the
 * BinRpcCallbackHandler to handle the message.
 *
 * @author Gerhard Riegler
 * @since 1.5.0
 */
public class BinRpcNetworkService implements Runnable {
    private static final Logger logger = LoggerFactory.getLogger(BinRpcNetworkService.class);

    private ServerSocket serverSocket;
    private final ExecutorService pool = Executors.newCachedThreadPool();
    private boolean accept = true;
    private HomematicCallbackReceiver callbackReceiver;

    /**
     * Creates the socket for listening to events from the Homematic server.
     */
    public BinRpcNetworkService(HomematicCallbackReceiver callbackReceiver) throws Exception {
        this.callbackReceiver = callbackReceiver;

        HomematicConfig config = HomematicContext.getInstance().getConfig();
        serverSocket = new ServerSocket(config.getCallbackPort());
        serverSocket.setReuseAddress(true);
    }

    /**
     * Listening for events and starts the callbackHandler if a event received.
     */
    @Override
    public void run() {
        while (accept) {
            try {
                Socket cs = serverSocket.accept();
                BinRpcCallbackHandler rpcHandler = new BinRpcCallbackHandler(cs, callbackReceiver);
                pool.execute(rpcHandler);
            } catch (IOException ex) {
                // ignore
            }
        }
    }

    /**
     * Stops the listening.
     */
    public void shutdown() {
        logger.debug("Shutting down {}", this.getClass().getSimpleName());
        accept = false;
        try {
            serverSocket.close();
        } catch (IOException ioe) {
            // ignore
        }
        pool.shutdownNow();
    }

}