/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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.apache.camel.component.cache;
import net.sf.ehcache.CacheManager;
import net.sf.ehcache.config.Configuration;
import org.apache.camel.support.ServiceSupport;
import org.apache.camel.util.ReflectionHelper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public abstract class CacheManagerFactory extends ServiceSupport {
private static final Logger LOG = LoggerFactory.getLogger(CacheManagerFactory.class);
private CacheManager cacheManager;
public synchronized CacheManager getInstance() {
if (cacheManager == null) {
cacheManager = createCacheManagerInstance();
// always turn off ET phone-home
LOG.debug("Turning off EHCache update checker ...");
Configuration config = cacheManager.getConfiguration();
try {
// need to set both the system property and bypass the setUpdateCheck method as that can be changed dynamically
System.setProperty("net.sf.ehcache.skipUpdateCheck", "true");
ReflectionHelper.setField(config.getClass().getDeclaredField("updateCheck"), config, false);
LOG.info("Turned off EHCache update checker. updateCheck={}", config.getUpdateCheck());
} catch (Throwable e) {
// ignore
LOG.warn("Error turning off EHCache update checker. Beware information sent over the internet!", e);
}
}
return cacheManager;
}
/**
* Creates {@link CacheManager}.
* <p/>
* The default implementation is {@link DefaultCacheManagerFactory}.
*
* @return {@link CacheManager}
*/
protected abstract CacheManager createCacheManagerInstance();
@Override
protected void doStart() throws Exception {
}
@Override
protected void doStop() throws Exception {
// shutdown cache manager when stopping
if (cacheManager != null) {
cacheManager.shutdown();
cacheManager = null;
}
}
}