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 */ 017 package org.apache.camel.processor; 018 019 import org.apache.camel.AsyncCallback; 020 import org.apache.camel.AsyncProcessor; 021 import org.apache.camel.Endpoint; 022 import org.apache.camel.Exchange; 023 import org.apache.camel.Producer; 024 import org.apache.camel.Service; 025 import org.apache.camel.impl.ServiceSupport; 026 import org.apache.camel.impl.converter.AsyncProcessorTypeConverter; 027 import org.apache.commons.logging.Log; 028 import org.apache.commons.logging.LogFactory; 029 030 /** 031 * @version $Revision: 35332 $ 032 */ 033 public class SendProcessor extends ServiceSupport implements AsyncProcessor, Service { 034 private static final transient Log LOG = LogFactory.getLog(SendProcessor.class); 035 private Endpoint destination; 036 private Producer producer; 037 private AsyncProcessor processor; 038 039 public SendProcessor(Endpoint destination) { 040 if (destination == null) { 041 throw new IllegalArgumentException("Endpoint cannot be null!"); 042 } 043 this.destination = destination; 044 } 045 046 @Override 047 public String toString() { 048 return "sendTo(" + destination + ")"; 049 } 050 051 public void process(Exchange exchange) throws Exception { 052 if (producer == null) { 053 if (isStopped()) { 054 LOG.warn("Ignoring exchange sent after processor is stopped: " + exchange); 055 } else { 056 throw new IllegalStateException("No producer, this processor has not been started!"); 057 } 058 } else { 059 producer.process(exchange); 060 } 061 } 062 063 public boolean process(Exchange exchange, AsyncCallback callback) { 064 if (producer == null) { 065 if (isStopped()) { 066 LOG.warn("Ignoring exchange sent after processor is stopped: " + exchange); 067 } else { 068 exchange.setException(new IllegalStateException("No producer, this processor has not been started!")); 069 } 070 callback.done(true); 071 return true; 072 } else { 073 return processor.process(exchange, callback); 074 } 075 } 076 077 078 public Endpoint getDestination() { 079 return destination; 080 } 081 082 protected void doStart() throws Exception { 083 this.producer = destination.createProducer(); 084 this.producer.start(); 085 this.processor = AsyncProcessorTypeConverter.convert(producer); 086 } 087 088 protected void doStop() throws Exception { 089 if (producer != null) { 090 try { 091 producer.stop(); 092 } finally { 093 producer = null; 094 processor = null; 095 } 096 } 097 } 098 099 }