/* * 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: SignalClient.java,v 1.4 2005/05/17 16:40:14 jmettraux Exp $ *///// SignalClient.java//// john.mettraux@openwfe.org//// generated with // jtmpl 1.1.01 2004/05/19 (john.mettraux@openwfe.org)//package openwfe.org.misc;/** * A command-line client for sending signals to a signal service. * Is mainly used by stop scripts to stop an OpenWFE application. * * <p><font size=2>CVS Info : * <br>$Author: jmettraux $ * <br>$Id: SignalClient.java,v 1.4 2005/05/17 16:40:14 jmettraux Exp $ </font> * * @author john.mettraux@openwfe.org */public class SignalClient{    //    // CONSTANTS & co    //    // FIELDS    //    // CONSTRUCTORS    //    // METHODS    //    // STATIC METHODS    /**     * This method is used by the SignalClient main method to do the job,     * it can be used as well by any other application to send a signal.     */    public static void sendSignal (final int port, final String signal)        throws java.io.IOException    {        final java.net.Socket socket =             new java.net.Socket("127.0.0.1", port);        final java.io.PrintWriter out =             new java.io.PrintWriter(socket.getOutputStream());        out.print(signal);        out.flush();        out.close();        socket.close();    }    private static void printUsage (String command)    {        if (command == null)            command = "java "+SignalClient.class.getName();        System.out.println("\nUSAGE :\n");        System.out.println("   "+command+" {port} {signal}\n");        System.out.println("      the main signal known by OpenWFE applications is 'STOP'");        System.out.println("      {port} may be a comma separated list of ports\n");    }    /**     * The main method of the client.     */    public static void main (final String[] args)        throws Exception    {        if (args.length < 2)        {            printUsage(null);            System.exit(2);        }        int index = 0;        String command = null;        if (args[0].equals("-c"))        {            command = args[1];            index = 2;        }        if (args.length < index+2)        {            printUsage(command);            System.exit(1);        }        final String[] sPorts = args[index++].split(",");        final String signal = args[index];        int exitCode = 0;        for (int i=0; i<sPorts.length; i++)        {            final int port = Integer.parseInt(sPorts[i]);            try            {                sendSignal(port, signal);                System.out.println                    ("Sent signal '"+signal+"' to localhost:"+port);            }            catch (java.net.ConnectException ce)            {                System.out.println                    ("Couldn't connect to port "+port);                exitCode = 3;            }        }        System.exit(exitCode);    }}