1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.kernel.messaging.jmx;
24  
25  import com.liferay.portal.kernel.messaging.Destination;
26  import com.liferay.portal.kernel.messaging.DestinationStatistics;
27  
28  import javax.management.MalformedObjectNameException;
29  import javax.management.ObjectName;
30  
31  /**
32   * <a href="DestinationStatisticsManager.java.html"><b><i>View Source</i></b>
33   * </a>
34   *
35   * @author Michael C. Han
36   * @author Brian Wing Shun Chan
37   *
38   */
39  public class DestinationStatisticsManager
40      implements DestinationStatisticsManagerMBean {
41  
42      public static ObjectName createObjectName(String destinationName) {
43          try {
44              return new ObjectName(_OBJECT_NAME_PREFIX + destinationName);
45          }
46          catch (MalformedObjectNameException mone) {
47              throw new IllegalStateException(mone);
48          }
49      }
50  
51      public DestinationStatisticsManager(Destination destination) {
52          _destination = destination;
53      }
54  
55      public int getActiveThreadCount() {
56          if (_autoRefresh) {
57              refresh();
58          }
59  
60          return _statistics.getActiveThreadCount();
61      }
62  
63      public int getCurrentThreadCount() {
64          if (_autoRefresh || (_statistics == null)) {
65              refresh();
66          }
67  
68          return _statistics.getCurrentThreadCount();
69      }
70  
71      public int getLargestThreadCount() {
72          if (_autoRefresh || (_statistics == null)) {
73              refresh();
74          }
75  
76          return _statistics.getLargestThreadCount();
77      }
78  
79      public String getLastRefresh() {
80          return String.valueOf(_lastRefresh);
81      }
82  
83      public int getMaxThreadPoolSize() {
84          if (_autoRefresh || (_statistics == null)) {
85              refresh();
86          }
87  
88          return _statistics.getMaxThreadPoolSize();
89      }
90  
91      public int getMinThreadPoolSize() {
92          if (_autoRefresh || (_statistics == null)) {
93              refresh();
94          }
95  
96          return _statistics.getMinThreadPoolSize();
97      }
98  
99      public long getPendingMessageCount() {
100         if (_autoRefresh || (_statistics == null)) {
101             refresh();
102         }
103 
104         return _statistics.getPendingMessageCount();
105     }
106 
107     public long getSentMessageCount() {
108         if (_autoRefresh || (_statistics == null)) {
109             refresh();
110         }
111 
112         return _statistics.getSentMessageCount();
113     }
114 
115     public boolean isAutoRefresh() {
116         return _autoRefresh;
117     }
118 
119     public void refresh() {
120         if (System.currentTimeMillis() > _lastRefresh) {
121             _lastRefresh = System.currentTimeMillis();
122             _statistics = _destination.getStatistics();
123         }
124     }
125 
126     public void setAutoRefresh(boolean autoRefresh) {
127         _autoRefresh = autoRefresh;
128     }
129 
130     private static final String _OBJECT_NAME_PREFIX =
131         "Liferay:product=Portal,type=MessagingDestinationStatistics,name=";
132 
133     private boolean _autoRefresh;
134     private Destination _destination;
135     private long _lastRefresh;
136     private DestinationStatistics _statistics;
137 
138 }