openwfe.org.misc.SignalClient Maven / Gradle / Ivy
/*
* Copyright (c) 2001-2006, 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 2713 2006-06-01 14:38:45Z jmettraux $
*/
//
// SignalClient.java
//
// [email protected]
//
// generated with
// jtmpl 1.1.01 2004/05/19 ([email protected])
//
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.
*
* CVS Info :
*
$Author: jmettraux $
*
$Id: SignalClient.java 2713 2006-06-01 14:38:45Z jmettraux $
*
* @author [email protected]
*/
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