1 // ========================================================================
2 // Copyright (c) Webtide LLC
3 // ------------------------------------------------------------------------
4 // All rights reserved. This program and the accompanying materials
5 // are made available under the terms of the Eclipse Public License v1.0
6 // and Apache License v2.0 which accompanies this distribution.
7 // The Eclipse Public License is available at
8 // http://www.eclipse.org/legal/epl-v10.html
9 // The Apache License v2.0 is available at
10 // http://www.opensource.org/licenses/apache2.0.php
11 // You may elect to redistribute this code under either of these licenses.
12 // ========================================================================
13
14
15 package org.eclipse.jetty.monitor.jmx;
16
17 import org.eclipse.jetty.util.log.Log;
18 import org.eclipse.jetty.util.log.Logger;
19
20
21 /* ------------------------------------------------------------ */
22 /**
23 * ConsoleNotifier
24 *
25 * Provides a way to output notification messages to a log file
26 */
27 public class LoggingNotifier implements EventNotifier
28 {
29 private static final Logger LOG = Log.getLogger(LoggingNotifier.class);
30
31 String _messageFormat;
32
33 /* ------------------------------------------------------------ */
34 /**
35 * Constructs a new notifier with specified format string
36 *
37 * @param format the {@link java.util.Formatter format string}
38 * @throws IllegalArgumentException
39 */
40 public LoggingNotifier(String format)
41 throws IllegalArgumentException
42 {
43 if (format == null)
44 throw new IllegalArgumentException("Message format cannot be null");
45
46 _messageFormat = format;
47 }
48
49 /* ------------------------------------------------------------ */
50 /**
51 * @see org.eclipse.jetty.monitor.jmx.EventNotifier#notify(org.eclipse.jetty.monitor.jmx.EventTrigger, org.eclipse.jetty.monitor.jmx.EventState, long)
52 */
53 public void notify(EventTrigger trigger, EventState<?> state, long timestamp)
54 {
55 String output = String.format(_messageFormat, state);
56
57 LOG.info(output);
58 }
59
60 }