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Java > Open Source Codes > com > caucho > boot > ResinWatchdogServlet


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  *
23  * Free Software Foundation, Inc.
24  * 59 Temple Place, Suite 330
25  * Boston, MA 02111-1307 USA
26  *
27  * @author Scott Ferguson
28  */

29
30 package com.caucho.boot;
31
32 import com.caucho.config.ConfigException;
33 import com.caucho.hessian.server.HessianServlet;
34
35 import java.util.logging.Logger JavaDoc;
36
37 /**
38  * Process responsible for watching a backend server.
39  */

40 public class ResinWatchdogServlet extends HessianServlet implements WatchdogAPI {
41   private static final Logger JavaDoc log
42     = Logger.getLogger(ResinWatchdogServlet.class.getName());
43
44   private ResinWatchdogManager _watchdogManager;
45   
46   public void init()
47   {
48     _watchdogManager = ResinWatchdogManager.getWatchdog();
49   }
50     
51   public void start(String JavaDoc []argv)
52     throws ConfigException, IllegalStateException JavaDoc
53   {
54     _watchdogManager.startServer(argv);
55   }
56   
57   public void restart(String JavaDoc serverId, String JavaDoc []argv)
58   {
59     stop(serverId);
60     start(argv);
61   }
62
63   public void stop(String JavaDoc serverId)
64   {
65     log.info("Watchdog stop: " + serverId);
66     
67     _watchdogManager.stopServer(serverId);
68   }
69   
70   public boolean shutdown()
71   {
72     log.info("Watchdog shutdown");
73
74     new Thread JavaDoc(new Shutdown JavaDoc()).start();
75
76     return true;
77   }
78
79   static class Shutdown implements Runnable JavaDoc {
80     public void run()
81     {
82       try {
83     Thread.sleep(1000);
84       } catch (Exception JavaDoc e) {
85       }
86
87       System.exit(0);
88     }
89   }
90 }
91
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