001/** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.camel.impl; 018 019import org.apache.camel.CamelContext; 020import org.apache.camel.Endpoint; 021import org.apache.camel.FailedToCreateProducerException; 022import org.apache.camel.Producer; 023import org.apache.camel.util.ServiceHelper; 024 025/** 026 * A {@link org.apache.camel.impl.ProducerCache} which is always empty and does not cache any {@link org.apache.camel.Producer}s. 027 */ 028public class EmptyProducerCache extends ProducerCache { 029 030 public EmptyProducerCache(Object source, CamelContext camelContext) { 031 super(source, camelContext, 0); 032 } 033 034 @Override 035 public Producer acquireProducer(Endpoint endpoint) { 036 // always create a new producer 037 Producer answer; 038 try { 039 answer = endpoint.createProducer(); 040 if (getCamelContext().isStartingRoutes() && answer.isSingleton()) { 041 // if we are currently starting a route, then add as service and enlist in JMX 042 // - but do not enlist non-singletons in JMX 043 // - note addService will also start the service 044 getCamelContext().addService(answer); 045 } else { 046 // must then start service so producer is ready to be used 047 ServiceHelper.startService(answer); 048 } 049 } catch (Exception e) { 050 throw new FailedToCreateProducerException(endpoint, e); 051 } 052 return answer; 053 } 054 055 @Override 056 public void releaseProducer(Endpoint endpoint, Producer producer) throws Exception { 057 // stop and shutdown the producer as its not cache or reused 058 ServiceHelper.stopAndShutdownService(producer); 059 } 060 061 @Override 062 public String toString() { 063 return "EmptyProducerCache for source: " + getSource(); 064 } 065 066}