/**
* 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.sjms.consumer;
import java.util.concurrent.ExecutorService;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.Session;
import org.apache.camel.AsyncProcessor;
import org.apache.camel.Exchange;
import org.apache.camel.RuntimeCamelException;
import org.apache.camel.component.sjms.SjmsEndpoint;
import org.apache.camel.component.sjms.SjmsExchangeMessageHelper;
import org.apache.camel.component.sjms.TransactionCommitStrategy;
import org.apache.camel.impl.DefaultExchange;
import org.apache.camel.spi.Synchronization;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import static org.apache.camel.util.ObjectHelper.wrapRuntimeCamelException;
/**
* Abstract MessageListener
*/
public abstract class AbstractMessageHandler implements MessageListener {
protected final Logger log = LoggerFactory.getLogger(getClass());
private final ExecutorService executor;
private SjmsEndpoint endpoint;
private AsyncProcessor processor;
private Session session;
private boolean transacted;
private boolean synchronous = true;
private Synchronization synchronization;
private boolean topic;
private TransactionCommitStrategy commitStrategy;
public AbstractMessageHandler(SjmsEndpoint endpoint, ExecutorService executor) {
this.endpoint = endpoint;
this.executor = executor;
}
public AbstractMessageHandler(SjmsEndpoint endpoint, ExecutorService executor, Synchronization synchronization) {
this.synchronization = synchronization;
this.endpoint = endpoint;
this.executor = executor;
}
/*
* @see javax.jms.MessageListener#onMessage(javax.jms.Message)
*
* @param message
*/
@Override
public void onMessage(Message message) {
RuntimeCamelException rce = null;
try {
final DefaultExchange exchange = (DefaultExchange) SjmsExchangeMessageHelper.createExchange(message, getEndpoint());
log.debug("Processing Exchange.id:{}", exchange.getExchangeId());
if (isTransacted() && synchronization != null) {
exchange.addOnCompletion(synchronization);
}
try {
if (isTransacted() || isSynchronous()) {
log.debug(" Handling synchronous message: {}", exchange.getIn().getBody());
handleMessage(exchange);
} else {
log.debug(" Handling asynchronous message: {}", exchange.getIn().getBody());
executor.execute(new Runnable() {
@Override
public void run() {
try {
handleMessage(exchange);
} catch (Exception e) {
exchange.setException(e);
// ObjectHelper.wrapRuntimeCamelException(e);
}
}
});
}
} catch (Exception e) {
if (exchange != null) {
if (exchange.getException() == null) {
exchange.setException(e);
} else {
throw e;
}
}
}
} catch (Exception e) {
rce = wrapRuntimeCamelException(e);
} finally {
if (rce != null) {
throw rce;
}
}
}
/**
* @param exchange
*/
public abstract void handleMessage(final Exchange exchange);
/**
* Method will be called to
*/
public abstract void close();
public void setTransacted(boolean transacted) {
this.transacted = transacted;
}
public boolean isTransacted() {
return transacted;
}
public SjmsEndpoint getEndpoint() {
return endpoint;
}
public AsyncProcessor getProcessor() {
return processor;
}
public void setProcessor(AsyncProcessor processor) {
this.processor = processor;
}
public void setSession(Session session) {
this.session = session;
}
public Session getSession() {
return session;
}
public void setSynchronous(boolean async) {
this.synchronous = async;
}
public boolean isSynchronous() {
return synchronous;
}
public void setTopic(boolean topic) {
this.topic = topic;
}
public boolean isTopic() {
return topic;
}
public TransactionCommitStrategy getCommitStrategy() {
return commitStrategy;
}
}