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1   /*** 
2    * 
3    * Copyright 2004 Protique Ltd
4    * 
5    * Licensed under the Apache License, Version 2.0 (the "License"); 
6    * you may not use this file except in compliance with the License. 
7    * You may obtain a copy of the License at 
8    * 
9    * http://www.apache.org/licenses/LICENSE-2.0
10   * 
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS, 
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
14   * See the License for the specific language governing permissions and 
15   * limitations under the License. 
16   * 
17   **/
18  package org.codehaus.activemq.management;
19  
20  import javax.jms.Message;
21  
22  /***
23   * Statistics for a {@link javax.jms.Queue}
24   *
25   * @version $Revision: 1.1 $
26   */
27  public class JMSQueueStatsImpl extends JMSEndpointStatsImpl implements JMSDestinationStats {
28      protected TimeStatisticImpl sendMessageRateTime;
29  
30      public JMSQueueStatsImpl() {
31          this.sendMessageRateTime = new TimeStatisticImpl("sendMessageRateTime", "Time taken to send a message (publish thoughtput rate)");
32          addStatistic("sendMessageRateTime", sendMessageRateTime);
33      }
34  
35      public JMSQueueStatsImpl(CountStatisticImpl messageCount, CountStatisticImpl pendingMessageCount, CountStatisticImpl expiredMessageCount, TimeStatisticImpl messageWaitTime, TimeStatisticImpl messageRateTime, TimeStatisticImpl sendMessageRateTime) {
36          super(messageCount, pendingMessageCount, expiredMessageCount, messageWaitTime, messageRateTime);
37          this.sendMessageRateTime = sendMessageRateTime;
38          addStatistic("sendMessageRateTime", sendMessageRateTime);
39      }
40  
41      public void setPendingMessageCountOnStartup(long count) {
42          CountStatisticImpl messageCount = (CountStatisticImpl) getPendingMessageCount();
43          messageCount.setCount(count);
44      }
45  
46      public void onMessageSend(Message message) {
47          long start = pendingMessageCount.getLastSampleTime();
48          pendingMessageCount.increment();
49          long end = pendingMessageCount.getLastSampleTime();
50          sendMessageRateTime.addTime(end - start);
51      }
52  
53      public void onMessageAck() {
54          long start = messageCount.getLastSampleTime();
55          messageCount.increment();
56          long end = messageCount.getLastSampleTime();
57          messageRateTime.addTime(end - start);
58      }
59  }