/*
* Sonatype Nexus (TM) Open Source Version
* Copyright (c) 2007-2014 Sonatype, Inc.
* All rights reserved. Includes the third-party code listed at http://links.sonatype.com/products/nexus/oss/attributions.
*
* This program and the accompanying materials are made available under the terms of the Eclipse Public License Version 1.0,
* which accompanies this distribution and is available at http://www.eclipse.org/legal/epl-v10.html.
*
* Sonatype Nexus (TM) Professional Version is available from Sonatype, Inc. "Sonatype" and "Sonatype Nexus" are trademarks
* of Sonatype, Inc. Apache Maven is a trademark of the Apache Software Foundation. M2eclipse is a trademark of the
* Eclipse Foundation. All other trademarks are the property of their respective owners.
*/
package org.sonatype.sisu.ehcache;
import java.io.File;
import java.io.IOException;
import java.lang.management.ManagementFactory;
import java.net.URL;
import javax.annotation.Nullable;
import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Singleton;
import javax.management.MBeanServer;
import com.google.common.annotations.VisibleForTesting;
import net.sf.ehcache.CacheManager;
import net.sf.ehcache.config.Configuration;
import net.sf.ehcache.config.ConfigurationFactory;
import net.sf.ehcache.management.ManagementService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Default implementation of {@link CacheManagerComponent}.
*
* Note: as SISU-93 is not yet here, and this component does need explicit shutdown
* (in case when multiple instances are re-created of it, like in UT environment),
* you have to use {@link #shutdown()} method.
*/
@Named
@Singleton
public class CacheManagerComponentImpl
implements CacheManagerComponent
{
private static final Logger logger = LoggerFactory.getLogger(CacheManagerComponentImpl.class);
private CacheManager cacheManager;
@Inject
public CacheManagerComponentImpl() throws IOException {
this(null);
}
@VisibleForTesting
public CacheManagerComponentImpl(final @Nullable File file) throws IOException {
this.cacheManager = createCacheManager(file);
try {
final MBeanServer mBeanServer = ManagementFactory.getPlatformMBeanServer();
ManagementService.registerMBeans(cacheManager, mBeanServer, false, false, true, true);
}
catch (Exception e) {
logger.warn("Failed to register mbean: {}", e.toString());
}
}
@Override
public CacheManager getCacheManager() {
return cacheManager;
}
@Override
public synchronized void shutdown() {
if (cacheManager != null) {
logger.info("Shutting down");
cacheManager.shutdown();
cacheManager = null;
}
}
@Override
public void finalize() throws Throwable {
try {
shutdown();
}
finally {
super.finalize();
}
}
private CacheManager createCacheManager(final @Nullable File file) throws IOException {
URL url;
if (file != null) {
url = file.toURI().toURL();
}
else {
url = getClass().getResource("/ehcache.xml");
if (url == null) {
url = getClass().getResource("/ehcache-default.xml");
}
}
if (url == null) {
logger.warn("No configuration found; using defaults");
return new CacheManager();
}
logger.info("Loading configuration from: {}", url);
Configuration configuration = ConfigurationFactory.parseConfiguration(url);
configuration.setUpdateCheck(false);
return new CacheManager(configuration);
}
}