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.sender;
24  
25  import com.liferay.portal.kernel.log.Log;
26  import com.liferay.portal.kernel.log.LogFactoryUtil;
27  import com.liferay.portal.kernel.messaging.DestinationNames;
28  import com.liferay.portal.kernel.messaging.Message;
29  import com.liferay.portal.kernel.messaging.MessageBus;
30  import com.liferay.portal.kernel.messaging.MessageBusException;
31  import com.liferay.portal.kernel.util.Validator;
32  import com.liferay.portal.kernel.uuid.PortalUUID;
33  
34  /**
35   * <a href="DefaultSynchronousMessageSender.java.html"><b><i>View Source</i>
36   * </b></a>
37   *
38   * @author Michael C. Han
39   *
40   */
41  public class DefaultSynchronousMessageSender
42      implements SynchronousMessageSender {
43  
44      public DefaultSynchronousMessageSender(
45          MessageBus messageBus, PortalUUID portalUUID, long timeout) {
46  
47          _messageBus = messageBus;
48          _portalUUID = portalUUID;
49          _timeout = timeout;
50      }
51  
52      public Object sendMessage(String destination, Message message)
53          throws MessageBusException {
54  
55          return sendMessage(destination, message, _timeout);
56      }
57  
58      public Object sendMessage(String destination, Message message, long timeout)
59          throws MessageBusException {
60  
61          if (!_messageBus.hasDestination(destination)) {
62              return null;
63          }
64  
65          message.setDestination(destination);
66  
67          String responseDestination = message.getResponseDestination();
68  
69          // Create a temporary destination if no response destination is
70          // configured
71  
72          if (Validator.isNull(responseDestination) ||
73              !_messageBus.hasDestination(responseDestination)) {
74  
75              if (_log.isDebugEnabled()) {
76                  _log.debug(
77                      "Response destination " + responseDestination +
78                          " is not configured");
79              }
80  
81              message.setResponseDestination(
82                  DestinationNames.MESSAGE_BUS_DEFAULT_RESPONSE);
83          }
84  
85          String responseId = _portalUUID.generate();
86  
87          message.setResponseId(responseId);
88  
89          SynchronousMessageListener synchronousMessageListener =
90              new SynchronousMessageListener(_messageBus, message, timeout);
91  
92          return synchronousMessageListener.send();
93      }
94  
95      private static Log _log =
96          LogFactoryUtil.getLog(DefaultSynchronousMessageSender.class);
97  
98      private MessageBus _messageBus;
99      private PortalUUID _portalUUID;
100     private long _timeout;
101 
102 }