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1   //
2   //  ========================================================================
3   //  Copyright (c) 1995-2015 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.monitor.jmx;
20  
21  
22  /* ------------------------------------------------------------ */
23  /**
24   * ConsoleNotifier
25   * 
26   * Provides a way to output notification messages to the server console
27   */
28  public class ConsoleNotifier implements EventNotifier
29  {
30      String _messageFormat;
31      
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 ConsoleNotifier(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("%1$tF %1$tT.%1$tL:NOTIFY::", timestamp);
56          
57          output += String.format(_messageFormat, state);         
58          
59          System.out.println(output);
60      }
61  }