/*
* JBoss, Home of Professional Open Source
* Copyright 2013, Red Hat, Inc. and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
/**
*
*/
package org.richfaces.cache;
import static org.richfaces.application.configuration.ConfigurationServiceHelper.getIntConfigurationValue;
import java.net.URL;
import java.text.MessageFormat;
import java.util.Map;
import javax.faces.context.FacesContext;
import net.sf.ehcache.CacheManager;
import net.sf.ehcache.Ehcache;
import org.richfaces.application.CoreConfiguration;
import org.richfaces.log.Logger;
import org.richfaces.log.RichfacesLogger;
/**
* @author Nick Belaevski
* @since 4.0
*/
public class EhCacheCacheFactory implements CacheFactory {
private static final Logger LOG = RichfacesLogger.CACHE.getLogger();
private CacheManager cacheManager;
public EhCacheCacheFactory() {
super();
URL configUrl = null;
ClassLoader ccl = Thread.currentThread().getContextClassLoader();
if (ccl != null) {
configUrl = ccl.getResource("ehcache.xml");
}
if (configUrl != null) {
LOG.info(MessageFormat.format("Using cache configuration: {0}", configUrl.toExternalForm()));
} else {
configUrl = EhCacheCacheFactory.class.getResource("ehcache-failsafe-richfaces.xml");
LOG.info(MessageFormat.format("Using default cache configuration: {0}", configUrl.toExternalForm()));
}
cacheManager = CacheManager.create(configUrl);
}
public Cache createCache(FacesContext facesContext, String cacheName, Map<?, ?> env) {
LOG.info("Creating EhCache cache instance");
int maxCacheSize = getIntConfigurationValue(facesContext, CoreConfiguration.Items.resourcesCacheSize);
boolean preconfiguredCache = false;
Ehcache ehcache = cacheManager.getEhcache(cacheName);
if (ehcache == null) {
ehcache = new net.sf.ehcache.Cache(cacheName, maxCacheSize, false, true, 0, 0);
} else {
preconfiguredCache = true;
if (ehcache.getCacheConfiguration().getMaxEntriesLocalHeap() <= 0) {
LOG.info(MessageFormat.format("Maximum cache size hasn''t been set, resetting to {0} max items", maxCacheSize));
ehcache.getCacheConfiguration().setMaxEntriesLocalHeap(maxCacheSize);
}
}
ehcache.setCacheManager(cacheManager);
return new EhCacheCache(ehcache, preconfiguredCache);
}
public void destroy() {
cacheManager.shutdown();
cacheManager = null;
}
}