/* * Copyright (c) 2005, John Mettraux, OpenWFE.org * All rights reserved. *  * Redistribution and use in source and binary forms, with or without  * modification, are permitted provided that the following conditions are met: *  * . Redistributions of source code must retain the above copyright notice, this *   list of conditions and the following disclaimer.   *  * . Redistributions in binary form must reproduce the above copyright notice,  *   this list of conditions and the following disclaimer in the documentation  *   and/or other materials provided with the distribution. *  * . Neither the name of the "OpenWFE" nor the names of its contributors may be *   used to endorse or promote products derived from this software without *   specific prior written permission. *  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE  * POSSIBILITY OF SUCH DAMAGE. * * $Id: SignalService.java,v 1.6 2005/05/17 16:40:14 jmettraux Exp $ *///// SignalService.java//// john.mettraux//// generated with // jtmpl 1.1.01 2004/05/19 (john.mettraux@openwfe.org)//package openwfe.org.misc;import java.nio.ByteBuffer;import java.nio.channels.SelectionKey;import java.nio.channels.SocketChannel;import openwfe.org.net.NetUtils;import openwfe.org.net.SocketService;import openwfe.org.ServiceException;/** * A service that listens on a TCP port and waits for signals : * currently, only the STOP signal is implemented. * * <p><font size=2>CVS Info : * <br>$Author: jmettraux $ * <br>$Id: SignalService.java,v 1.6 2005/05/17 16:40:14 jmettraux Exp $ </font> * * @author john.mettraux */public class SignalService    extends SocketService{    private final static org.apache.log4j.Logger log = org.apache.log4j.Logger        .getLogger(SignalService.class.getName());    //    // CONSTANTS & co    //    // FIELDS    //    // CONSTRUCTORS    //    // METHODS from SocketService    /**     * How an incoming socket connection is treated.     */    public void handle (final SelectionKey key)        throws ServiceException    {        try        {            final SocketChannel channel = (SocketChannel)key.channel();            log.debug                ("handle() conn from "+                 channel.socket().getInetAddress());            if ( ! "/127.0.0.1".equals                    (channel.socket().getInetAddress().toString()))            {                channel.close();                return;            }            final java.io.BufferedReader br =                 new java.io.BufferedReader(NetUtils.channelToReader(channel));            final String signal = br.readLine();            log.debug("handle() received signal >"+signal+"<");            if (signal.equals("STOP"))            {                getContext().stop();                log.info("exiting....................");                System.exit(-7);            }            if (signal.equals("PAUSE"))            {                getContext().pause();            }            else if (signal.equals("PLAY"))            {                getContext().play();            }            else if (signal.equals("STATE"))            {                // return the current state of the application                sendState(channel);            }            br.close();            channel.close();        }        catch (final Exception e)        {            log.warn("handle() signal problem", e);        }    }    private void sendState (final SocketChannel channel)        throws java.io.IOException    {        final String sState = getContext().getState().toString() + "\n";        final ByteBuffer bState = ByteBuffer.wrap(sState.getBytes());        channel.write(bState);        //channel.flush();        // no flush method for channels...    }    //    // METHODS from Service    /*    public org.jdom.Element getStatus ()    {        return new org.jdom.Element(this.getName());    }    */    //    // STATIC METHODS}