001    /**
002     * Copyright (c) 2000-2012 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.kernel.messaging;
016    
017    import com.liferay.portal.kernel.log.Log;
018    import com.liferay.portal.kernel.log.LogFactoryUtil;
019    import com.liferay.portal.kernel.messaging.sender.MessageSender;
020    import com.liferay.portal.kernel.messaging.sender.SingleDestinationMessageSender;
021    
022    /**
023     * @author Michael C. Han
024     * @author Brian Wing Shun Chan
025     */
026    public abstract class BaseMessageStatusMessageListener
027            implements MessageListener {
028    
029            public BaseMessageStatusMessageListener() {
030            }
031    
032            /**
033             * @deprecated
034             */
035            public BaseMessageStatusMessageListener(
036                    SingleDestinationMessageSender statusSender,
037                    MessageSender responseSender) {
038    
039                    _statusSender = statusSender;
040                    _responseSender = responseSender;
041            }
042    
043            public void receive(Message message) {
044                    MessageStatus messageStatus = new MessageStatus();
045    
046                    messageStatus.startTimer();
047    
048                    try {
049                            doReceive(message, messageStatus);
050                    }
051                    catch (Exception e) {
052                            _log.error(
053                                    "Unable to process request " + message.getDestinationName(), e);
054    
055                            messageStatus.setException(e);
056                    }
057                    finally {
058                            messageStatus.stopTimer();
059    
060                            _statusSender.send(messageStatus);
061                    }
062            }
063    
064            public void setResponseSender(MessageSender responseSender) {
065                    _responseSender = responseSender;
066            }
067    
068            public void setStatusSender(SingleDestinationMessageSender statusSender) {
069                    _statusSender = statusSender;
070            }
071    
072            protected abstract void doReceive(
073                            Message message, MessageStatus messageStatus)
074                    throws Exception;
075    
076            protected MessageSender getResponseSender() {
077                    return _responseSender;
078            }
079    
080            private static Log _log = LogFactoryUtil.getLog(BaseMessageListener.class);
081    
082            private MessageSender _responseSender;
083            private SingleDestinationMessageSender _statusSender;
084    
085    }