/**
* 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.CacheException;
import net.sf.ehcache.Ehcache;
import net.sf.ehcache.Element;
import org.apache.camel.Exchange;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class CacheEventListener implements net.sf.ehcache.event.CacheEventListener {
private static final transient Logger LOG = LoggerFactory.getLogger(CacheEventListener.class);
CacheConsumer cacheConsumer;
public CacheEventListener() {
}
public CacheEventListener(CacheConsumer cacheConsumer) {
this.cacheConsumer = cacheConsumer;
}
public void notifyElementEvicted(Ehcache cache, Element element) {
LOG.debug("Element {} is being evicted from cache {}", element, cache.getName());
}
public void notifyElementExpired(Ehcache cache, Element element) {
LOG.debug("Element {} has expired in cache {}", element, cache.getName());
}
public void notifyElementPut(Ehcache cache, Element element) throws CacheException {
LOG.debug("Element {} has just been added/put in cache {}", element, cache.getName());
dispatchExchange(cache, element, "ADD");
}
public void notifyElementRemoved(Ehcache cache, Element element) throws CacheException {
LOG.debug("Element {} has just been removed from cache {}", element, cache.getName());
dispatchExchange(cache, element, "DELETE");
}
public void notifyElementUpdated(Ehcache cache, Element element) throws CacheException {
LOG.debug("Element {} has just been updated in cache {}", element, cache.getName());
dispatchExchange(cache, element, "UPDATE");
}
public void notifyRemoveAll(Ehcache cache) {
LOG.debug("Cache {} is being emptied and all elements removed", cache.getName());
dispatchExchange(cache, null, "DELETEALL");
}
private void dispatchExchange(Ehcache cache, Element element, String operation) {
Exchange exchange;
LOG.debug("Consumer Dispatching the Exchange containing the Element {} in cache {}", element, cache.getName());
if (element == null) {
exchange = cacheConsumer.getEndpoint().createCacheExchange(operation, "", "");
} else {
exchange = cacheConsumer.getEndpoint().createCacheExchange(operation, (String) element.getObjectKey(), element.getObjectValue());
}
try {
cacheConsumer.getProcessor().process(exchange);
} catch (Exception e) {
throw new CacheException("Error in consumer while dispatching exchange containing key "
+ (element != null ? element.getObjectKey() : null) + " for further processing", e);
}
}
public CacheConsumer getCacheConsumer() {
return cacheConsumer;
}
public void setCacheConsumer(CacheConsumer cacheConsumer) {
this.cacheConsumer = cacheConsumer;
}
public void dispose() {
// noop
}
public Object clone() throws CloneNotSupportedException {
return super.clone();
}
}