001    /**
002     * Copyright (c) 2000-2013 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.backgroundtask.messaging;
016    
017    import com.liferay.portal.kernel.backgroundtask.BackgroundTaskStatus;
018    import com.liferay.portal.kernel.backgroundtask.BackgroundTaskStatusMessageTranslator;
019    import com.liferay.portal.kernel.backgroundtask.BackgroundTaskStatusRegistryUtil;
020    import com.liferay.portal.kernel.log.Log;
021    import com.liferay.portal.kernel.log.LogFactoryUtil;
022    import com.liferay.portal.kernel.messaging.BaseMessageListener;
023    import com.liferay.portal.kernel.messaging.Message;
024    
025    /**
026     * @author Michael C. Han
027     */
028    public class BackgroundTaskStatusMessageListener extends BaseMessageListener {
029    
030            public BackgroundTaskStatusMessageListener(
031                    long backgroundTaskId, BackgroundTaskStatusMessageTranslator
032                    backgroundTaskStatusMessageTranslator) {
033    
034                    _backgroundTaskId = backgroundTaskId;
035                    _backgroundTaskStatusMessageTranslator =
036                            backgroundTaskStatusMessageTranslator;
037            }
038    
039            @Override
040            protected void doReceive(Message message) throws Exception {
041                    long backgroundTaskId = message.getLong("backgroundTaskId");
042    
043                    if (backgroundTaskId != _backgroundTaskId) {
044                            return;
045                    }
046    
047                    BackgroundTaskStatus backgroundTaskStatus =
048                            BackgroundTaskStatusRegistryUtil.getBackgroundTaskStatus(
049                                    backgroundTaskId);
050    
051                    if (backgroundTaskStatus == null) {
052                            if (_log.isDebugEnabled()) {
053                                    _log.debug(
054                                            "Unable to locate status for background task " +
055                                                    backgroundTaskId + " to process " + message);
056                            }
057    
058                            return;
059                    }
060    
061                    _backgroundTaskStatusMessageTranslator.translate(
062                            backgroundTaskStatus, message);
063            }
064    
065            private static Log _log = LogFactoryUtil.getLog(
066                    BackgroundTaskStatusMessageListener.class);
067    
068            private long _backgroundTaskId;
069            private BackgroundTaskStatusMessageTranslator
070                    _backgroundTaskStatusMessageTranslator;
071    
072    }