| /** |
| * 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.processor.cache; |
| |
| import net.sf.ehcache.CacheManager; |
| import net.sf.ehcache.Ehcache; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class CacheValidate { |
| private static final transient Logger LOG = LoggerFactory.getLogger(CacheValidate.class); |
| |
| public boolean isValid(CacheManager cacheManager, String cacheName, String key) { |
| if (LOG.isTraceEnabled()) { |
| LOG.trace("Cache Name: " + cacheName); |
| } |
| |
| if (!cacheManager.cacheExists(cacheName)) { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("No existing Cache found with name: " + cacheName |
| + ". Please ensure a cache is first instantiated using a Cache Consumer or Cache Producer." |
| + " Replacement will not be performed since the cache " + cacheName + "does not presently exist"); |
| } |
| return false; |
| } |
| |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("Found an existing cache: " + cacheName); |
| } |
| |
| if (LOG.isTraceEnabled()) { |
| LOG.trace("Cache " + cacheName + " currently contains " + cacheManager.getCache(cacheName).getSize() + " elements"); |
| } |
| Ehcache cache = cacheManager.getCache(cacheName); |
| |
| if (!cache.isKeyInCache(key)) { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("No Key with name: " + key |
| + "presently exists in the cache. It is also possible that the key may have expired in the cache." |
| + " Replacement will not be performed until an appropriate key/value pair is added to (or) found in the cache."); |
| } |
| return false; |
| } |
| |
| return true; |
| } |
| |
| } |