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.cache.bootstrap;
016    
017    import com.liferay.portal.kernel.log.Log;
018    import com.liferay.portal.kernel.log.LogFactoryUtil;
019    import com.liferay.portal.kernel.util.GetterUtil;
020    
021    import java.util.Properties;
022    
023    import net.sf.ehcache.CacheManager;
024    import net.sf.ehcache.Ehcache;
025    import net.sf.ehcache.bootstrap.BootstrapCacheLoader;
026    
027    /**
028     * @author Shuyang Zhou
029     * @author Sherry Yang
030     */
031    public class EhcacheStreamBootstrapCacheLoader implements BootstrapCacheLoader {
032    
033            public EhcacheStreamBootstrapCacheLoader(Properties properties) {
034                    if (properties != null) {
035                            _bootstrapAsynchronously = GetterUtil.getBoolean(
036                                    properties.getProperty("bootstrapAsynchronously"));
037                    }
038                    else {
039                            _bootstrapAsynchronously = true;
040                    }
041            }
042    
043            @Override
044            public Object clone() {
045                    return this;
046            }
047    
048            public void doLoad(Ehcache ehcache) {
049                    if (_log.isDebugEnabled()) {
050                            _log.debug("Bootstraping " + ehcache.getName());
051                    }
052    
053                    CacheManager cacheManager = ehcache.getCacheManager();
054    
055                    try {
056                            ClusterLinkBootstrapLoaderHelperUtil.loadCachesFromCluster(
057                                    cacheManager.getName(), ehcache.getName());
058                    }
059                    catch (Exception e) {
060                            if (_log.isWarnEnabled()) {
061                                    _log.warn("Unable to load cache data from the cluster", e);
062                            }
063                    }
064            }
065    
066            @Override
067            public boolean isAsynchronous() {
068                    return _bootstrapAsynchronously;
069            }
070    
071            @Override
072            public void load(Ehcache ehcache) {
073                    if (ClusterLinkBootstrapLoaderHelperUtil.isSkipped()) {
074                            return;
075                    }
076    
077                    if (_bootstrapAsynchronously) {
078                            EhcacheStreamClientThread streamBootstrapThread =
079                                    new EhcacheStreamClientThread(ehcache);
080    
081                            streamBootstrapThread.start();
082                    }
083                    else {
084                            doLoad(ehcache);
085                    }
086            }
087    
088            private static final Log _log = LogFactoryUtil.getLog(
089                    EhcacheStreamBootstrapCacheLoader.class);
090    
091            private final boolean _bootstrapAsynchronously;
092    
093            private class EhcacheStreamClientThread extends Thread {
094    
095                    public EhcacheStreamClientThread(Ehcache ehcache) {
096                            if (_log.isDebugEnabled()) {
097                                    _log.debug(
098                                            "Ehcache stream client thread for cache " +
099                                                    ehcache.getName());
100                            }
101    
102                            _ehcache = ehcache;
103    
104                            setDaemon(true);
105                            setName(
106                                    EhcacheStreamClientThread.class.getName() + " - " +
107                                            ehcache.getName());
108                            setPriority(Thread.NORM_PRIORITY);
109                    }
110    
111                    @Override
112                    public void run() {
113                            try {
114                                    doLoad(_ehcache);
115                            }
116                            catch (Exception e) {
117                                    if (_log.isWarnEnabled()) {
118                                            _log.warn("Unable to asynchronously stream bootstrap", e);
119                                    }
120                            }
121                    }
122    
123                    private final Ehcache _ehcache;
124    
125            }
126    
127    }