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.component.seda;
018
019 import java.util.concurrent.TimeUnit;
020
021 import org.apache.camel.AsyncCallback;
022 import org.apache.camel.AsyncProcessor;
023 import org.apache.camel.Consumer;
024 import org.apache.camel.Exchange;
025 import org.apache.camel.Processor;
026 import org.apache.camel.impl.ServiceSupport;
027 import org.apache.camel.impl.converter.AsyncProcessorTypeConverter;
028 import org.apache.commons.logging.Log;
029 import org.apache.commons.logging.LogFactory;
030
031 /**
032 * A Consumer for the SEDA component.
033 *
034 * @version $Revision: 659782 $
035 */
036 public class SedaConsumer extends ServiceSupport implements Consumer, Runnable {
037 private static final transient Log LOG = LogFactory.getLog(SedaConsumer.class);
038
039 private SedaEndpoint endpoint;
040 private AsyncProcessor processor;
041 private Thread thread;
042
043 public SedaConsumer(SedaEndpoint endpoint, Processor processor) {
044 this.endpoint = endpoint;
045 this.processor = AsyncProcessorTypeConverter.convert(processor);
046 }
047
048 @Override
049 public String toString() {
050 return "SedaConsumer: " + endpoint.getEndpointUri();
051 }
052
053 public void run() {
054 while (isRunAllowed()) {
055 final Exchange exchange;
056 try {
057 exchange = endpoint.getQueue().poll(1000, TimeUnit.MILLISECONDS);
058 } catch (InterruptedException e) {
059 if (LOG.isDebugEnabled()) {
060 LOG.debug("Interupted: " + e, e);
061 }
062 continue;
063 }
064 if (exchange != null && isRunAllowed()) {
065 try {
066 processor.process(exchange, new AsyncCallback() {
067 public void done(boolean sync) {
068 }
069 });
070 } catch (Exception e) {
071 LOG.error("Seda queue caught: " + e, e);
072 }
073 }
074 }
075 }
076
077 protected void doStart() throws Exception {
078 thread = new Thread(this, getThreadName(endpoint.getEndpointUri()));
079 thread.setDaemon(true);
080 thread.start();
081 }
082
083 protected void doStop() throws Exception {
084 thread.join();
085 }
086
087 }