1 /***
2 * Redistribution and use of this software and associated documentation
3 * ("Software"), with or without modification, are permitted provided
4 * that the following conditions are met:
5 *
6 * 1. Redistributions of source code must retain copyright
7 * statements and notices. Redistributions must also contain a
8 * copy of this document.
9 *
10 * 2. Redistributions in binary form must reproduce the
11 * above copyright notice, this list of conditions and the
12 * following disclaimer in the documentation and/or other
13 * materials provided with the distribution.
14 *
15 * 3. The name "Exolab" must not be used to endorse or promote
16 * products derived from this Software without prior written
17 * permission of Exoffice Technologies. For written permission,
18 * please contact tma@netspace.net.au.
19 *
20 * 4. Products derived from this Software may not be called "Exolab"
21 * nor may "Exolab" appear in their names without prior written
22 * permission of Exoffice Technologies. Exolab is a registered
23 * trademark of Exoffice Technologies.
24 *
25 * 5. Due credit should be given to the Exolab Project
26 * (http://www.exolab.org/).
27 *
28 * THIS SOFTWARE IS PROVIDED BY EXOFFICE TECHNOLOGIES AND CONTRIBUTORS
29 * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
30 * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
31 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
32 * EXOFFICE TECHNOLOGIES OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
33 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
34 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
35 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
37 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
38 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
39 * OF THE POSSIBILITY OF SUCH DAMAGE.
40 *
41 * Copyright 2003-2004 (C) Exoffice Technologies Inc. All Rights Reserved.
42 *
43 * $Id: AckingListener.java,v 1.3 2004/02/03 21:52:08 tanderson Exp $
44 */
45 package org.exolab.jmscts.stress;
46
47 import javax.jms.Message;
48
49 import org.apache.log4j.Category;
50
51 import org.exolab.jmscts.core.CountingListener;
52
53
54 /***
55 * Listener which counts and acks each message it receives
56 *
57 * @version $Revision: 1.3 $ $Date: 2004/02/03 21:52:08 $
58 * @author <a href="mailto:tma@netspace.net.au">Tim Anderson</a>
59 * @see CountingListener
60 */
61 public class AckingListener extends CountingListener {
62
63 /***
64 * The logger
65 */
66 private static final Category log =
67 Category.getInstance(AckingListener.class);
68
69
70 /***
71 * Construct an instance of the listener, with the number of messages
72 * expected to be received. When this count is reached, the listener
73 * notifies the waiting client (if any)
74 *
75 * @param expected the number of messages expected
76 */
77 public AckingListener(int expected) {
78 super(expected);
79 }
80
81 /***
82 * This method is asynchronously invoked by the message consumer when
83 * a message becomes available.
84 * If the number of expected messages are received, it notifies
85 * the waiting client (if any)
86 *
87 * @param message the received message
88 */
89 public void onMessage(Message message) {
90 try {
91 message.acknowledge();
92 } catch (Exception exception) {
93 log.error("Failed to acknowledge message", exception);
94 }
95 super.onMessage(message);
96 }
97
98 }
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