1 //
2 // ========================================================================
3 // Copyright (c) 1995-2016 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
19 package org.eclipse.jetty.util.component;
20
21 import java.io.FileWriter;
22 import java.io.Writer;
23
24 import org.eclipse.jetty.util.log.Log;
25 import org.eclipse.jetty.util.log.Logger;
26
27
28 /* ------------------------------------------------------------ */
29 /** A LifeCycle Listener that writes state changes to a file.
30 * <p>This can be used with the jetty.sh script to wait for successful startup.
31 */
32 public class FileNoticeLifeCycleListener implements LifeCycle.Listener
33 {
34 private static final Logger LOG = Log.getLogger(FileNoticeLifeCycleListener.class);
35
36 private final String _filename;
37
38 public FileNoticeLifeCycleListener(String filename)
39 {
40 _filename=filename;
41 }
42
43 private void writeState(String action, LifeCycle lifecycle)
44 {
45 try (Writer out = new FileWriter(_filename,true))
46 {
47 out.append(action).append(" ").append(lifecycle.toString()).append("\n");
48 }
49 catch(Exception e)
50 {
51 LOG.warn(e);
52 }
53 }
54
55 public void lifeCycleStarting(LifeCycle event)
56 {
57 writeState("STARTING",event);
58 }
59
60 public void lifeCycleStarted(LifeCycle event)
61 {
62 writeState("STARTED",event);
63 }
64
65 public void lifeCycleFailure(LifeCycle event, Throwable cause)
66 {
67 writeState("FAILED",event);
68 }
69
70 public void lifeCycleStopping(LifeCycle event)
71 {
72 writeState("STOPPING",event);
73 }
74
75 public void lifeCycleStopped(LifeCycle event)
76 {
77 writeState("STOPPED",event);
78 }
79 }