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.cache.cluster.clusterlink;
016    
017    import com.liferay.portal.kernel.cache.cluster.PortalCacheClusterChannel;
018    import com.liferay.portal.kernel.cache.cluster.PortalCacheClusterChannelFactory;
019    import com.liferay.portal.kernel.cache.cluster.PortalCacheClusterException;
020    import com.liferay.portal.kernel.cluster.Priority;
021    
022    import java.util.Collections;
023    import java.util.List;
024    import java.util.concurrent.atomic.AtomicInteger;
025    
026    /**
027     * @author Shuyang Zhou
028     */
029    public class ClusterLinkPortalCacheClusterChannelFactory
030            implements PortalCacheClusterChannelFactory {
031    
032            @Override
033            public PortalCacheClusterChannel createPortalCacheClusterChannel()
034                    throws PortalCacheClusterException {
035    
036                    int count = _counter.getAndIncrement();
037    
038                    if (count >= _priorities.size()) {
039                            throw new IllegalStateException(
040                                    "Cannot create more than " + _priorities.size() + " channels");
041                    }
042    
043                    return new ClusterLinkPortalCacheClusterChannel(
044                            _destinationName, _priorities.get(count));
045            }
046    
047            public void setDestinationName(String destinationName) {
048                    _destinationName = destinationName;
049            }
050    
051            public void setPriorities(List<Priority> priorities) {
052                    _priorities = priorities;
053    
054                    Collections.sort(priorities);
055            }
056    
057            private AtomicInteger _counter = new AtomicInteger(0);
058            private String _destinationName;
059            private List<Priority> _priorities;
060    
061    }