org.squidy.manager.commander.Incoming.java Source code

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Here is the source code for org.squidy.manager.commander.Incoming.java

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/**
 * Squidy Interaction Library is free software: you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the License,
 * or (at your option) any later version.
 * 
 * Squidy Interaction Library is distributed in the hope that it will be
 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with Squidy Interaction Library. If not, see
 * <http://www.gnu.org/licenses/>.
 * 
 * 2009 Human-Computer Interaction Group, University of Konstanz.
 * <http://hci.uni-konstanz.de>
 * 
 * Please contact info@squidy-lib.de or visit our website
 * <http://www.squidy-lib.de> for further information.
 */

package org.squidy.manager.commander;

import java.io.EOFException;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.net.Socket;
import java.net.SocketException;
import java.util.Queue;
import java.util.concurrent.ConcurrentLinkedQueue;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.squidy.manager.commander.command.ICommand;

/**
 * <code>Incoming</code>.
 * 
 * <pre>
 * Date: Sep 20, 2008
 * Time: 10:42:02 PM
 * </pre>
 * 
 * @author Roman R&auml;dle, <a
 *         href="mailto:Roman.Raedle@uni-konstanz.de">Roman.Raedle@uni-konstanz.de</a>, University
 *         of Konstanz
 * @version $Id: Incoming.java 772 2011-09-16 15:39:44Z raedle $
 * @since 1.1.0
 */
public class Incoming extends Thread {

    // Logger to log info, error, debug,... messages.
    private static final Log LOG = LogFactory.getLog(Incoming.class);

    private ControlServerContext context;

    private boolean running;

    private Queue<ICommand> commandQueue = new ConcurrentLinkedQueue<ICommand>();

    private ObjectInputStream inputStream;

    private ConnectionPeer connectionPeer;

    /**
     * @param connectionPeer
     */
    public void setConnectionPeer(ConnectionPeer connectionPeer) {
        this.connectionPeer = connectionPeer;
    }

    /**
     * @param inputStream
     * @param context
     * @throws IOException
     */
    public Incoming(InputStream inputStream, ControlServerContext context) throws IOException {
        this.inputStream = new ObjectInputStream(inputStream);
        this.context = context;
        running = true;

        start();
    }

    /*
     * (non-Javadoc)
     * 
     * @see java.lang.Thread#run()
     */
    @Override
    public void run() {

        while (running) {
            try {
                Object o = inputStream.readObject();

                if (LOG.isDebugEnabled()) {
                    LOG.debug("Received object " + o + " of class " + o.getClass());
                }

                if (o instanceof ICommand) {
                    //               ICommand cmd = ((ICommand) o).execute(context);
                    ((ICommand) o).execute(context);

                    //               if (connectionPeer != null) {
                    //                  connectionPeer.send(cmd);
                    //               }
                }
            } catch (EOFException e) {
                try {
                    close();
                } catch (IOException e1) {
                    if (LOG.isErrorEnabled()) {
                        LOG.error(e1.getMessage(), e1);
                    }
                }
            } catch (SocketException e) {
                try {
                    if (LOG.isInfoEnabled()) {
                        LOG.info("Closing incoming thread caused by: " + e.getMessage(), e);
                    }
                    close();
                } catch (IOException e1) {
                    if (LOG.isInfoEnabled()) {
                        LOG.info("Closing incoming thread caused by: " + e.getMessage(), e);
                    }
                    if (LOG.isErrorEnabled()) {
                        LOG.error(e1.getMessage(), e1);
                    }
                }
            } catch (IOException e) {
                if (LOG.isErrorEnabled()) {
                    LOG.error(e.getMessage(), e);
                }
            } catch (ClassNotFoundException e) {
                if (LOG.isErrorEnabled()) {
                    LOG.error(e.getMessage(), e);
                }
            }
        }
    }

    /**
     * @throws IOException
     */
    public void close() throws IOException {
        running = false;
        commandQueue.clear();
        inputStream.close();
    }
}