001    /**
002     * Copyright (c) 2000-present 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,
032                    BackgroundTaskStatusMessageTranslator
033                            backgroundTaskStatusMessageTranslator) {
034    
035                    _backgroundTaskId = backgroundTaskId;
036                    _backgroundTaskStatusMessageTranslator =
037                            backgroundTaskStatusMessageTranslator;
038            }
039    
040            @Override
041            protected void doReceive(Message message) throws Exception {
042                    long backgroundTaskId = message.getLong("backgroundTaskId");
043    
044                    if (backgroundTaskId != _backgroundTaskId) {
045                            return;
046                    }
047    
048                    BackgroundTaskStatus backgroundTaskStatus =
049                            BackgroundTaskStatusRegistryUtil.getBackgroundTaskStatus(
050                                    backgroundTaskId);
051    
052                    if (backgroundTaskStatus == null) {
053                            if (_log.isDebugEnabled()) {
054                                    _log.debug(
055                                            "Unable to locate status for background task " +
056                                                    backgroundTaskId + " to process " + message);
057                            }
058    
059                            return;
060                    }
061    
062                    _backgroundTaskStatusMessageTranslator.translate(
063                            backgroundTaskStatus, message);
064            }
065    
066            private static final Log _log = LogFactoryUtil.getLog(
067                    BackgroundTaskStatusMessageListener.class);
068    
069            private final long _backgroundTaskId;
070            private final BackgroundTaskStatusMessageTranslator
071                    _backgroundTaskStatusMessageTranslator;
072    
073    }