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 * Processor for forwarding exchanges to an endpoint destination. 032 * 033 * @version $Revision: 41826 $ 034 */ 035 public class SendProcessor extends ServiceSupport implements AsyncProcessor, Service { 036 private static final transient Log LOG = LogFactory.getLog(SendProcessor.class); 037 private Endpoint destination; 038 private Producer producer; 039 private AsyncProcessor processor; 040 041 public SendProcessor(Endpoint destination) { 042 if (destination == null) { 043 throw new IllegalArgumentException("Endpoint cannot be null!"); 044 } 045 this.destination = destination; 046 } 047 048 @Override 049 public String toString() { 050 return "sendTo(" + destination + ")"; 051 } 052 053 public void process(Exchange exchange) throws Exception { 054 if (producer == null) { 055 if (isStopped()) { 056 LOG.warn("Ignoring exchange sent after processor is stopped: " + exchange); 057 } else { 058 throw new IllegalStateException("No producer, this processor has not been started!"); 059 } 060 } else { 061 producer.process(exchange); 062 } 063 } 064 065 public boolean process(Exchange exchange, AsyncCallback callback) { 066 if (producer == null) { 067 if (isStopped()) { 068 LOG.warn("Ignoring exchange sent after processor is stopped: " + exchange); 069 } else { 070 exchange.setException(new IllegalStateException("No producer, this processor has not been started!")); 071 } 072 callback.done(true); 073 return true; 074 } else { 075 return processor.process(exchange, callback); 076 } 077 } 078 079 public Endpoint getDestination() { 080 return destination; 081 } 082 083 protected void doStart() throws Exception { 084 this.producer = destination.createProducer(); 085 this.producer.start(); 086 this.processor = AsyncProcessorTypeConverter.convert(producer); 087 } 088 089 protected void doStop() throws Exception { 090 if (producer != null) { 091 try { 092 producer.stop(); 093 } finally { 094 producer = null; 095 processor = null; 096 } 097 } 098 } 099 100 }