| /** |
| * 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 java.io.InputStream; |
| |
| import net.sf.ehcache.CacheManager; |
| import net.sf.ehcache.Ehcache; |
| import org.apache.camel.Exchange; |
| import org.apache.camel.Processor; |
| import org.apache.camel.component.cache.CacheManagerFactory; |
| import org.apache.camel.converter.IOConverter; |
| import org.apache.camel.util.IOHelper; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class CacheBasedTokenReplacer extends CacheValidate implements Processor { |
| private static final transient Logger LOG = LoggerFactory.getLogger(CacheBasedTokenReplacer.class); |
| private String cacheName; |
| private String key; |
| private String replacementToken; |
| private CacheManager cacheManager; |
| private Ehcache cache; |
| |
| public CacheBasedTokenReplacer(String cacheName, String key, String replacementToken) { |
| super(); |
| if (cacheName.contains("cache://")) { |
| this.setCacheName(cacheName.replace("cache://", "")); |
| } else { |
| this.setCacheName(cacheName); |
| } |
| this.setKey(key); |
| this.setReplacementToken(replacementToken); |
| } |
| |
| public void process(Exchange exchange) throws Exception { |
| // Cache the buffer to the specified Cache against the specified key |
| cacheManager = new CacheManagerFactory().instantiateCacheManager(); |
| |
| if (isValid(cacheManager, cacheName, key)) { |
| cache = cacheManager.getCache(cacheName); |
| |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("Replacing Token " + replacementToken + "in Message with value stored against key " |
| + key + " in CacheName " + cacheName); |
| } |
| exchange.getIn().setHeader("CACHE_KEY", key); |
| |
| Object body = exchange.getIn().getBody(); |
| InputStream is = exchange.getContext().getTypeConverter().convertTo(InputStream.class, body); |
| byte[] buffer; |
| try { |
| buffer = IOConverter.toBytes(is); |
| } finally { |
| IOHelper.close(is, "is", LOG); |
| } |
| |
| // Note: The value in the cache must be a String |
| String cacheValue = exchange.getContext().getTypeConverter() |
| .convertTo(String.class, cache.get(key).getObjectValue()); |
| String replacedTokenString = new String(buffer).replaceAll(replacementToken, cacheValue); |
| |
| if (LOG.isTraceEnabled()) { |
| LOG.trace("replacedTokenString = " + replacedTokenString); |
| } |
| exchange.getIn().setBody(replacedTokenString.getBytes()); |
| } |
| } |
| |
| public String getCacheName() { |
| return cacheName; |
| } |
| |
| public void setCacheName(String cacheName) { |
| this.cacheName = cacheName; |
| } |
| |
| public String getKey() { |
| return key; |
| } |
| |
| public void setKey(String key) { |
| this.key = key; |
| } |
| |
| public String getReplacementToken() { |
| return replacementToken; |
| } |
| |
| public void setReplacementToken(String replacementToken) { |
| this.replacementToken = replacementToken; |
| } |
| |
| } |