/**
* 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.activemq.camel.component.broker;
import java.util.Map;
import org.apache.activemq.broker.ProducerBrokerExchange;
import org.apache.activemq.command.ActiveMQMessage;
import org.apache.camel.AsyncCallback;
import org.apache.camel.Exchange;
import org.apache.camel.Message;
import org.apache.camel.component.jms.JmsMessage;
import org.apache.camel.converter.ObjectConverter;
import org.apache.camel.impl.DefaultAsyncProducer;
public class BrokerProducer extends DefaultAsyncProducer {
private final BrokerEndpoint brokerEndpoint;
public BrokerProducer(BrokerEndpoint endpoint) {
super(endpoint);
brokerEndpoint = endpoint;
}
@Override
public boolean process(Exchange exchange, AsyncCallback callback) {
try {
//In the middle of the broker - InOut doesn't make any sense
//so we do in only
return processInOnly(exchange, callback);
} catch (Throwable e) {
// must catch exception to ensure callback is invoked as expected
// to let Camel error handling deal with this
exchange.setException(e);
callback.done(true);
return true;
}
}
protected boolean processInOnly(final Exchange exchange, final AsyncCallback callback) {
try {
ActiveMQMessage message = getMessage(exchange);
if (message != null) {
message.setDestination(brokerEndpoint.getDestination());
//if the ProducerBrokerExchange is null the broker will create it
ProducerBrokerExchange producerBrokerExchange = (ProducerBrokerExchange) exchange.getProperty(BrokerEndpoint.PRODUCER_BROKER_EXCHANGE);
brokerEndpoint.inject(producerBrokerExchange, message);
}
} catch (Exception e) {
exchange.setException(e);
}
callback.done(true);
return true;
}
private ActiveMQMessage getMessage(Exchange exchange) throws Exception {
ActiveMQMessage result;
Message camelMessage;
if (exchange.hasOut()) {
camelMessage = exchange.getOut();
} else {
camelMessage = exchange.getIn();
}
Map<String, Object> headers = camelMessage.getHeaders();
/**
* We purposely don't want to support injecting messages half-way through
* broker processing - use the activemq camel component for that - but
* we will support changing message headers and destinations
*/
if (camelMessage instanceof JmsMessage) {
JmsMessage jmsMessage = (JmsMessage) camelMessage;
if (jmsMessage.getJmsMessage() instanceof ActiveMQMessage) {
result = (ActiveMQMessage) jmsMessage.getJmsMessage();
//lets apply any new message headers
setJmsHeaders(result, headers);
} else {
throw new IllegalStateException("Not the original message from the broker " + jmsMessage.getJmsMessage());
}
} else {
throw new IllegalStateException("Not the original message from the broker " + camelMessage);
}
return result;
}
private void setJmsHeaders(ActiveMQMessage message, Map<String, Object> headers) {
message.setReadOnlyProperties(false);
for (Map.Entry<String, Object> entry : headers.entrySet()) {
if (entry.getKey().equalsIgnoreCase("JMSDeliveryMode")) {
Object value = entry.getValue();
if (value instanceof Number) {
Number number = (Number) value;
message.setJMSDeliveryMode(number.intValue());
}
}
if (entry.getKey().equalsIgnoreCase("JmsPriority")) {
Integer value = ObjectConverter.toInteger(entry.getValue());
if (value != null) {
message.setJMSPriority(value.intValue());
}
}
if (entry.getKey().equalsIgnoreCase("JMSTimestamp")) {
Long value = ObjectConverter.toLong(entry.getValue());
if (value != null) {
message.setJMSTimestamp(value.longValue());
}
}
if (entry.getKey().equalsIgnoreCase("JMSExpiration")) {
Long value = ObjectConverter.toLong(entry.getValue());
if (value != null) {
message.setJMSExpiration(value.longValue());
}
}
if (entry.getKey().equalsIgnoreCase("JMSRedelivered")) {
message.setJMSRedelivered(ObjectConverter.toBool(entry.getValue()));
}
if (entry.getKey().equalsIgnoreCase("JMSType")) {
Object value = entry.getValue();
if (value != null) {
message.setJMSType(value.toString());
}
}
}
}
}