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
20 package org.eclipse.jetty.monitor.jmx;
21
22 import org.eclipse.jetty.util.log.Log;
23 import org.eclipse.jetty.util.log.Logger;
24
25
26 /* ------------------------------------------------------------ */
27 /**
28 * ConsoleNotifier
29 *
30 * Provides a way to output notification messages to a log file
31 */
32 public class LoggingNotifier implements EventNotifier
33 {
34 private static final Logger LOG = Log.getLogger(LoggingNotifier.class);
35
36 String _messageFormat;
37
38 /* ------------------------------------------------------------ */
39 /**
40 * Constructs a new notifier with specified format string
41 *
42 * @param format the {@link java.util.Formatter format string}
43 * @throws IllegalArgumentException if format is invalid
44 */
45 public LoggingNotifier(String format)
46 throws IllegalArgumentException
47 {
48 if (format == null)
49 throw new IllegalArgumentException("Message format cannot be null");
50
51 _messageFormat = format;
52 }
53
54 /* ------------------------------------------------------------ */
55 /**
56 * @see org.eclipse.jetty.monitor.jmx.EventNotifier#notify(org.eclipse.jetty.monitor.jmx.EventTrigger, org.eclipse.jetty.monitor.jmx.EventState, long)
57 */
58 public void notify(EventTrigger trigger, EventState<?> state, long timestamp)
59 {
60 String output = String.format(_messageFormat, state);
61
62 LOG.info(output);
63 }
64
65 }