/**
* 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.component.seda;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.TimeUnit;
import org.apache.camel.AsyncCallback;
import org.apache.camel.AsyncProcessor;
import org.apache.camel.Consumer;
import org.apache.camel.Exchange;
import org.apache.camel.Processor;
import org.apache.camel.impl.ServiceSupport;
import org.apache.camel.impl.converter.AsyncProcessorTypeConverter;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* A Consumer for the SEDA component.
*
* @version $Revision: 707305 $
*/
public class SedaConsumer extends ServiceSupport implements Consumer, Runnable {
private static final transient Log LOG = LogFactory.getLog(SedaConsumer.class);
private SedaEndpoint endpoint;
private AsyncProcessor processor;
private Thread thread;
public SedaConsumer(SedaEndpoint endpoint, Processor processor) {
this.endpoint = endpoint;
this.processor = AsyncProcessorTypeConverter.convert(processor);
}
@Override
public String toString() {
return "SedaConsumer: " + endpoint.getEndpointUri();
}
public void run() {
BlockingQueue<Exchange> queue = endpoint.getQueue();
while (queue != null && isRunAllowed()) {
final Exchange exchange;
try {
exchange = queue.poll(1000, TimeUnit.MILLISECONDS);
} catch (InterruptedException e) {
if (LOG.isDebugEnabled()) {
LOG.debug("Interupted: " + e, e);
}
continue;
}
if (exchange != null) {
if (isRunAllowed()) {
try {
processor.process(exchange, new AsyncCallback() {
public void done(boolean sync) {
}
});
} catch (Exception e) {
LOG.error("Seda queue caught: " + e, e);
}
} else {
LOG.warn("This consumer is stopped during polling an exchange, so putting it back on the seda queue: " + exchange);
try {
queue.put(exchange);
} catch (InterruptedException e) {
if (LOG.isDebugEnabled()) {
LOG.debug("Interupted: " + e, e);
}
}
}
}
}
}
protected void doStart() throws Exception {
thread = new Thread(this, getThreadName(endpoint.getEndpointUri()));
thread.setDaemon(true);
thread.start();
}
protected void doStop() throws Exception {
thread.join();
thread = null;
}
}