1//
2//  ========================================================================
3//  Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
4//  ------------------------------------------------------------------------
5//  All rights reserved. This program and the accompanying materials
6//  are made available under the terms of the Eclipse Public License v1.0
7//  and Apache License v2.0 which accompanies this distribution.
8//
9//      The Eclipse Public License is available at
10//      http://www.eclipse.org/legal/epl-v10.html
11//
12//      The Apache License v2.0 is available at
13//      http://www.opensource.org/licenses/apache2.0.php
14//
15//  You may elect to redistribute this code under either of these licenses.
16//  ========================================================================
17//
18
19package org.eclipse.jetty.util.component;
20
21import java.io.FileWriter;
22
23import org.eclipse.jetty.util.log.Log;
24import org.eclipse.jetty.util.log.Logger;
25
26
27/* ------------------------------------------------------------ */
28/** A LifeCycle Listener that writes state changes to a file.
29 * <p>This can be used with the jetty.sh script to wait for successful startup.
30 */
31public class FileNoticeLifeCycleListener implements LifeCycle.Listener
32{
33    Logger LOG = Log.getLogger(FileNoticeLifeCycleListener.class);
34
35    private final String _filename;
36
37    public FileNoticeLifeCycleListener(String filename)
38    {
39        _filename=filename;
40    }
41
42    private void writeState(String action, LifeCycle lifecycle)
43    {
44        try
45        {
46            FileWriter out = new FileWriter(_filename,true);
47            out.append(action).append(" ").append(lifecycle.toString()).append("\n");
48            out.close();
49        }
50        catch(Exception e)
51        {
52            LOG.warn(e);
53        }
54    }
55
56    public void lifeCycleStarting(LifeCycle event)
57    {
58        writeState("STARTING",event);
59    }
60
61    public void lifeCycleStarted(LifeCycle event)
62    {
63        writeState("STARTED",event);
64    }
65
66    public void lifeCycleFailure(LifeCycle event, Throwable cause)
67    {
68        writeState("FAILED",event);
69    }
70
71    public void lifeCycleStopping(LifeCycle event)
72    {
73        writeState("STOPPING",event);
74    }
75
76    public void lifeCycleStopped(LifeCycle event)
77    {
78        writeState("STOPPED",event);
79    }
80}
81