private MuleMessage dispatchMessage(MuleEvent event) throws Exception {
Session session = null;
MessageProducer producer = null;
MessageConsumer consumer = null;
Destination replyTo = null;
boolean transacted = false;
boolean cached = false;
boolean useReplyToDestination;
final Transaction muleTx = TransactionCoordination.getInstance().getTransaction();
if (logger.isDebugEnabled()) {
logger.debug(
"dispatching on endpoint: "
+ event.getEndpoint().getEndpointURI()
+ ". MuleEvent id is: "
+ event.getId()
+ ". Outbound transformers are: "
+ event.getEndpoint().getTransformers());
}
// assume session is transacted first, and thus, managed
boolean sessionManaged = true;
try {
session = connector.getSessionFromTransaction();
if (session != null) {
transacted = true;
}
// Should we be caching sessions? Note this is not part of the JMS spec.
// and is turned off by default.
else if (event
.getMessage()
.getBooleanProperty(
JmsConstants.CACHE_JMS_SESSIONS_PROPERTY, connector.isCacheJmsSessions())) {
sessionManaged = false;
cached = true;
if (cachedSession != null) {
session = cachedSession;
} else {
session = connector.getSession(event.getEndpoint());
cachedSession = session;
}
} else {
// by now we're running with a different connector and connection
sessionManaged = muleTx != null && muleTx.isXA();
session = connector.getSession(event.getEndpoint());
if (event.getEndpoint().getTransactionConfig().isTransacted()) {
transacted = true;
}
}
// If a transaction is running, we can not receive any messages
// in the same transaction using a replyTo destination
useReplyToDestination = returnResponse(event) && !transacted;
boolean topic = connector.getTopicResolver().isTopic(event.getEndpoint(), true);
Destination dest = connector.getJmsSupport().createDestination(session, endpoint);
producer = connector.getJmsSupport().createProducer(session, dest, topic);
preTransformMessage(event.getMessage());
Object message = event.transformMessage();
if (!(message instanceof Message)) {
throw new DispatchException(
JmsMessages.checkTransformer("JMS message", message.getClass(), connector.getName()),
event.getMessage(),
event.getEndpoint());
}
Message msg = (Message) message;
MuleMessage eventMsg = event.getMessage();
replyTo = getReplyToDestination(msg, session, event, useReplyToDestination, topic);
// Set the replyTo property
if (replyTo != null) {
msg.setJMSReplyTo(replyTo);
}
// Allow overrides to alter the message if necessary
processMessage(msg, event);
// QoS support
String ttlString = (String) eventMsg.removeProperty(JmsConstants.TIME_TO_LIVE_PROPERTY);
String priorityString = (String) eventMsg.removeProperty(JmsConstants.PRIORITY_PROPERTY);
String persistentDeliveryString =
(String) eventMsg.removeProperty(JmsConstants.PERSISTENT_DELIVERY_PROPERTY);
long ttl =
StringUtils.isNotBlank(ttlString)
? NumberUtils.toLong(ttlString)
: Message.DEFAULT_TIME_TO_LIVE;
int priority =
StringUtils.isNotBlank(priorityString)
? NumberUtils.toInt(priorityString)
: Message.DEFAULT_PRIORITY;
boolean persistent =
StringUtils.isNotBlank(persistentDeliveryString)
? BooleanUtils.toBoolean(persistentDeliveryString)
: connector.isPersistentDelivery();
// If we are honouring the current QoS message headers we need to use the ones set on the
// current message
if (connector.isHonorQosHeaders()) {
Object priorityProp = eventMsg.getProperty(JmsConstants.JMS_PRIORITY);
Object deliveryModeProp = eventMsg.getProperty(JmsConstants.JMS_DELIVERY_MODE);
if (priorityProp != null) {
priority = NumberUtils.toInt(priorityProp);
}
if (deliveryModeProp != null) {
persistent = NumberUtils.toInt(deliveryModeProp) == DeliveryMode.PERSISTENT;
}
}
if (logger.isDebugEnabled()) {
logger.debug("Sending message of type " + ClassUtils.getSimpleName(msg.getClass()));
logger.debug(
"Sending JMS Message type "
+ msg.getJMSType()
+ "\n JMSMessageID="
+ msg.getJMSMessageID()
+ "\n JMSCorrelationID="
+ msg.getJMSCorrelationID()
+ "\n JMSDeliveryMode="
+ (persistent ? DeliveryMode.PERSISTENT : DeliveryMode.NON_PERSISTENT)
+ "\n JMSPriority="
+ priority
+ "\n JMSReplyTo="
+ msg.getJMSReplyTo());
}
connector.getJmsSupport().send(producer, msg, persistent, priority, ttl, topic, endpoint);
if (useReplyToDestination && replyTo != null) {
consumer = createReplyToConsumer(msg, event, session, replyTo, topic);
if (topic) {
// need to register a listener for a topic
Latch l = new Latch();
ReplyToListener listener = new ReplyToListener(l);
consumer.setMessageListener(listener);
connector.getJmsSupport().send(producer, msg, persistent, priority, ttl, topic, endpoint);
int timeout = event.getTimeout();
if (logger.isDebugEnabled()) {
logger.debug("Waiting for return event for: " + timeout + " ms on " + replyTo);
}
l.await(timeout, TimeUnit.MILLISECONDS);
consumer.setMessageListener(null);
listener.release();
Message result = listener.getMessage();
if (result == null) {
logger.debug("No message was returned via replyTo destination");
return new DefaultMuleMessage(NullPayload.getInstance(), connector.getMuleContext());
} else {
MessageAdapter adapter = connector.getMessageAdapter(result);
return new DefaultMuleMessage(
JmsMessageUtils.toObject(
result, connector.getSpecification(), endpoint.getEncoding()),
adapter,
connector.getMuleContext());
}
} else {
int timeout = event.getTimeout();
if (logger.isDebugEnabled()) {
logger.debug("Waiting for return event for: " + timeout + " ms on " + replyTo);
}
Message result = consumer.receive(timeout);
if (result == null) {
logger.debug("No message was returned via replyTo destination " + replyTo);
return new DefaultMuleMessage(NullPayload.getInstance(), connector.getMuleContext());
} else {
MessageAdapter adapter = connector.getMessageAdapter(result);
return new DefaultMuleMessage(
JmsMessageUtils.toObject(
result, connector.getSpecification(), endpoint.getEncoding()),
adapter,
connector.getMuleContext());
}
}
}
return new DefaultMuleMessage(
returnOriginalMessageAsReply ? msg : NullPayload.getInstance(),
connector.getMuleContext());
} finally {
connector.closeQuietly(producer);
connector.closeQuietly(consumer);
// TODO AP check if TopicResolver is to be utilized for temp destinations as well
if (replyTo != null
&& (replyTo instanceof TemporaryQueue || replyTo instanceof TemporaryTopic)) {
if (replyTo instanceof TemporaryQueue) {
connector.closeQuietly((TemporaryQueue) replyTo);
} else {
// hope there are no more non-standard tricks from JMS vendors
// here ;)
connector.closeQuietly((TemporaryTopic) replyTo);
}
}
if (!sessionManaged && transacted && muleTx instanceof TransactionCollection) {
handleMultiTx(session);
}
// If the session is from the current transaction, it is up to the
// transaction to close it.
if (session != null && !cached && !transacted) {
connector.closeQuietly(session);
}
}
}
public JmsReplyToHandler(JmsConnector connector, List transformers) {
super(transformers, connector.getMuleContext());
this.connector = connector;
}
