1   /**
2    * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
3    *
4    * This library is free software; you can redistribute it and/or modify it under
5    * the terms of the GNU Lesser General Public License as published by the Free
6    * Software Foundation; either version 2.1 of the License, or (at your option)
7    * any later version.
8    *
9    * This library is distributed in the hope that it will be useful, but WITHOUT
10   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
11   * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
12   * details.
13   */
14  
15  package com.liferay.portlet.blogs.messaging;
16  
17  import com.liferay.portal.kernel.log.Log;
18  import com.liferay.portal.kernel.log.LogFactoryUtil;
19  import com.liferay.portal.kernel.messaging.Message;
20  import com.liferay.portal.kernel.messaging.MessageListener;
21  import com.liferay.portlet.blogs.util.LinkbackConsumerUtil;
22  import com.liferay.portlet.blogs.util.LinkbackProducerUtil;
23  
24  /**
25   * <a href="LinkbackMessageListener.java.html"><b><i>View Source</i>
26   * </b></a>
27   *
28   * @author Alexander Chow
29   * @author Tina Tian
30   */
31  public class LinkbackMessageListener implements MessageListener {
32  
33      public void receive(Message message) {
34          try {
35              doReceive(message);
36          }
37          catch (Exception e) {
38              _log.error("Unable to process message " + message, e);
39          }
40      }
41  
42      protected void doReceive(Message message) throws Exception {
43          LinkbackConsumerUtil.verifyNewTrackbacks();
44          LinkbackProducerUtil.sendQueuedPingbacks();
45      }
46  
47      private static Log _log = LogFactoryUtil.getLog(
48          LinkbackMessageListener.class);
49  
50  }