1
22
23 package com.liferay.portal.kernel.messaging;
24
25 import com.liferay.portal.kernel.log.Log;
26 import com.liferay.portal.kernel.log.LogFactoryUtil;
27 import com.liferay.portal.kernel.messaging.sender.MessageSender;
28 import com.liferay.portal.kernel.messaging.sender.SingleDestinationMessageSender;
29
30
35 public abstract class BaseMessageListener implements MessageListener {
36
37 public BaseMessageListener() {
38 }
39
40
43 public BaseMessageListener(
44 SingleDestinationMessageSender statusSender,
45 MessageSender responseSender) {
46
47 _statusSender = statusSender;
48 _responseSender = responseSender;
49 }
50
51 public void receive(Message message) {
52 MessageStatus messageStatus = new MessageStatus();
53
54 messageStatus.startTimer();
55
56 try {
57 doReceive(message, messageStatus);
58 }
59 catch (Exception e) {
60 _log.error(
61 "Unable to process request " + message.getDestinationName(), e);
62
63 messageStatus.setException(e);
64 }
65 finally {
66 messageStatus.stopTimer();
67
68 _statusSender.send(messageStatus);
69 }
70 }
71
72 public void setResponseSender(MessageSender responseSender) {
73 _responseSender = responseSender;
74 }
75
76 public void setStatusSender(SingleDestinationMessageSender statusSender) {
77 _statusSender = statusSender;
78 }
79
80 protected abstract void doReceive(
81 Message message, MessageStatus messageStatus)
82 throws Exception;
83
84 protected MessageSender getResponseSender() {
85 return _responseSender;
86 }
87
88 private static Log _log = LogFactoryUtil.getLog(BaseMessageListener.class);
89
90 private MessageSender _responseSender;
91 private SingleDestinationMessageSender _statusSender;
92
93 }