/**
* Licensed to Jasig under one or more contributor license
* agreements. See the NOTICE file distributed with this work
* for additional information regarding copyright ownership.
* Jasig licenses this file to you under the Apache License,
* Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a
* copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on
* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.jasig.portal.utils.cache;
import net.sf.ehcache.CacheManager;
import net.sf.ehcache.Ehcache;
import org.apache.commons.lang.Validate;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.annotation.Required;
/**
* @author Eric Dalquist
* @version $Revision$
*/
public class EhCacheExpirationManager implements Runnable {
protected final Log logger = LogFactory.getLog(this.getClass());
private CacheManager cacheManager;
/**
* @return the cacheManager
*/
public CacheManager getCacheManager() {
return cacheManager;
}
/**
* @param cacheManager the cacheManager to set
*/
@Required
public void setCacheManager(CacheManager cacheManager) {
Validate.notNull(cacheManager);
this.cacheManager = cacheManager;
}
/* (non-Javadoc)
* @see java.lang.Runnable#run()
*/
public void run() {
final long startEvictions = System.currentTimeMillis();
long evictions = 0;
final String[] cacheNames = this.cacheManager.getCacheNames();
if (this.logger.isDebugEnabled()) {
this.logger.debug("Found " + cacheNames.length + " caches to clean.");
}
for (final String cacheName : cacheNames) {
final Ehcache cache = this.cacheManager.getEhcache(cacheName);
final long preEvictSize = cache.getMemoryStoreSize();
final long startEviction = System.currentTimeMillis();
cache.evictExpiredElements();
if (this.logger.isDebugEnabled()) {
final long evicted = preEvictSize - cache.getMemoryStoreSize();
evictions += evicted;
this.logger.debug("Evicted " + evicted + " expired elements from cache '" + cacheName + "' in " + (System.currentTimeMillis() - startEviction) + "ms");
}
}
if (this.logger.isDebugEnabled()) {
this.logger.debug("Scanned " + cacheNames.length + " caches and evicted " + evictions + " elements in " + (System.currentTimeMillis() - startEvictions) + "ms.");
}
}
}