001    /**
002     * Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
003     *
004     * The contents of this file are subject to the terms of the Liferay Enterprise
005     * Subscription License ("License"). You may not use this file except in
006     * compliance with the License. You can obtain a copy of the License by
007     * contacting Liferay, Inc. See the License for the specific language governing
008     * permissions and limitations under the License, including but not limited to
009     * distribution rights of the Software.
010     *
011     *
012     *
013     */
014    
015    package com.liferay.portal.kernel.resiliency.spi.provider;
016    
017    import com.liferay.portal.kernel.resiliency.spi.SPI;
018    
019    import java.util.Map;
020    import java.util.concurrent.ConcurrentHashMap;
021    import java.util.concurrent.SynchronousQueue;
022    
023    /**
024     * @author Shuyang Zhou
025     */
026    public class SPISynchronousQueueUtil {
027    
028            public static SynchronousQueue<SPI> createSynchronousQueue(String spiUUID) {
029                    SynchronousQueue<SPI> synchronousQueue = new SynchronousQueue<SPI>();
030    
031                    _synchronousQueues.put(spiUUID, synchronousQueue);
032    
033                    return synchronousQueue;
034            }
035    
036            public static void destroySynchronousQueue(String spiUUID) {
037                    _synchronousQueues.remove(spiUUID);
038            }
039    
040            public static void notifySynchronousQueue(String spiUUID, SPI spi)
041                    throws InterruptedException {
042    
043                    SynchronousQueue<SPI> synchronousQueue = _synchronousQueues.remove(
044                            spiUUID);
045    
046                    if (synchronousQueue == null) {
047                            throw new IllegalStateException(
048                                    "No SPI synchronous queue with uuid " + spiUUID);
049                    }
050    
051                    synchronousQueue.put(spi);
052            }
053    
054            private static Map<String, SynchronousQueue<SPI>> _synchronousQueues =
055                    new ConcurrentHashMap<String, SynchronousQueue<SPI>>();
056    
057    }