001    /**
002     * Copyright (c) 2000-2010 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.monitoring.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.Message;
020    import com.liferay.portal.kernel.messaging.MessageListener;
021    import com.liferay.portal.monitoring.statistics.DataSample;
022    import com.liferay.portal.monitoring.statistics.DataSampleProcessor;
023    
024    /**
025     * @author Michael C. Han
026     * @author Brian Wing Shun Chan
027     */
028    public class MonitoringMessageListener implements MessageListener {
029    
030            public void receive(Message message) {
031                    try {
032                            doReceive(message);
033                    }
034                    catch (Exception e) {
035                            _log.error("Unable to process message " + message, e);
036                    }
037            }
038    
039            public void setDataSampleProcessor(
040                    DataSampleProcessor<DataSample> dataSampleProcessor) {
041    
042                    _dataSampleProcessor = dataSampleProcessor;
043            }
044    
045            protected void doReceive(Message message) throws Exception {
046                    DataSample dataSample = (DataSample)message.getPayload();
047    
048                    if (dataSample != null) {
049                            _dataSampleProcessor.processDataSample(dataSample);
050                    }
051            }
052    
053            private static Log _log = LogFactoryUtil.getLog(
054                    MonitoringMessageListener.class);
055    
056            private DataSampleProcessor<DataSample> _dataSampleProcessor;
057    
058    }