| /** |
| * 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() { |
| super(); |
| } |
| |
| public CacheEventListener(CacheConsumer cacheConsumer) { |
| super(); |
| 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(); |
| } |
| |
| } |