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.kernel.backgroundtask;
016    
017    import com.liferay.portal.model.BackgroundTask;
018    
019    import java.io.Serializable;
020    
021    import java.util.Map;
022    
023    /**
024     * @author Michael C. Han
025     */
026    public class ThreadLocalAwareBackgroundTaskExecutor
027            extends DelegatingBackgroundTaskExecutor {
028    
029            public ThreadLocalAwareBackgroundTaskExecutor(
030                    BackgroundTaskExecutor backgroundTaskExecutor,
031                    BackgroundTaskThreadLocalManager backgroundTaskThreadLocalManager) {
032    
033                    super(backgroundTaskExecutor);
034    
035                    _backgroundTaskThreadLocalManager = backgroundTaskThreadLocalManager;
036            }
037    
038            @Override
039            public BackgroundTaskResult execute(BackgroundTask backgroundTask)
040                    throws Exception {
041    
042                    Map<String, Serializable> threadLocalValues =
043                            _backgroundTaskThreadLocalManager.getThreadLocalValues();
044    
045                    try {
046                            _backgroundTaskThreadLocalManager.deserializeThreadLocals(
047                                    backgroundTask.getTaskContextMap());
048    
049                            return super.execute(backgroundTask);
050                    }
051                    finally {
052                            _backgroundTaskThreadLocalManager.setThreadLocalValues(
053                                    threadLocalValues);
054                    }
055            }
056    
057            private final BackgroundTaskThreadLocalManager
058                    _backgroundTaskThreadLocalManager;
059    
060    }