/**
* Create a one time MessageProducer for this JMS OutTransport information. For simplicity and
* best compatibility, this method uses only JMS 1.0.2b API. Please be cautious when making any
* changes
*
* @return a JMSSender based on one-time use resources
* @throws JMSException on errors, to be handled and logged by the caller
*/
public JMSMessageSender createJMSSender(MessageContext msgCtx) throws JMSException {
// digest the targetAddress and locate CF from the EPR
loadConnectionFactoryFromProperties();
// create a one time connection and session to be used
String user = properties != null ? properties.get(JMSConstants.PARAM_JMS_USERNAME) : null;
String pass = properties != null ? properties.get(JMSConstants.PARAM_JMS_PASSWORD) : null;
QueueConnectionFactory qConFac = null;
TopicConnectionFactory tConFac = null;
int destType = -1;
// TODO: there is something missing here for destination type generic
if (JMSConstants.DESTINATION_TYPE_QUEUE.equals(destinationType)) {
destType = JMSConstants.QUEUE;
qConFac = (QueueConnectionFactory) connectionFactory;
} else if (JMSConstants.DESTINATION_TYPE_TOPIC.equals(destinationType)) {
destType = JMSConstants.TOPIC;
tConFac = (TopicConnectionFactory) connectionFactory;
} else {
// treat jmsdestination type=queue(default is queue)
destType = JMSConstants.QUEUE;
qConFac = (QueueConnectionFactory) connectionFactory;
}
if (msgCtx.getProperty(JMSConstants.JMS_XA_TRANSACTION_MANAGER) != null) {
XAConnection connection = null;
if (user != null && pass != null) {
if (qConFac != null) {
connection = ((XAConnectionFactory) qConFac).createXAConnection(user, pass);
} else if (tConFac != null) {
connection = ((XAConnectionFactory) tConFac).createXAConnection(user, pass);
}
} else {
if (qConFac != null) {
connection = ((XAConnectionFactory) qConFac).createXAConnection();
} else if (tConFac != null) {
connection = ((XAConnectionFactory) tConFac).createXAConnection();
}
}
if (connection == null) {
connection = ((XAConnectionFactory) qConFac).createXAConnection();
}
XASession session = null;
MessageProducer producer = null;
if (connection != null) {
if (destType == JMSConstants.QUEUE) {
session = connection.createXASession();
producer = session.createProducer(destination);
} else {
session = connection.createXASession();
producer = session.createProducer(destination);
}
}
XAResource xaResource = session.getXAResource();
TransactionManager tx = null;
Xid xid1 = null;
Transaction transaction = null;
java.util.UUID uuid = java.util.UUID.randomUUID();
try {
tx = (TransactionManager) msgCtx.getProperty(JMSConstants.JMS_XA_TRANSACTION_MANAGER);
transaction = tx.getTransaction();
msgCtx.setProperty(JMSConstants.JMS_XA_TRANSACTION_MANAGER, tx);
msgCtx.setProperty(JMSConstants.JMS_XA_TRANSACTION, transaction);
xid1 =
new JMSXid(
JMSConstants.JMS_XA_TRANSACTION_PREFIX.getBytes(StandardCharsets.UTF_8),
1,
uuid.toString().getBytes());
msgCtx.setProperty("XID", xid1);
xaResource.start(xid1, XAResource.TMNOFLAGS);
} catch (SystemException e) {
handleException("Error Occurred during starting getting Transaction.", e);
} catch (XAException e) {
handleException("Error Occurred during starting XA resource.", e);
}
return new JMSMessageSender(
connection,
session,
producer,
destination,
jmsConnectionFactory == null ? this.cacheLevel : jmsConnectionFactory.getCacheLevel(),
jmsSpecVersion,
destType == -1 ? null : destType == JMSConstants.QUEUE ? Boolean.TRUE : Boolean.FALSE,
transaction,
xid1,
xaResource);
} else {
Connection connection = null;
if (user != null && pass != null) {
if (qConFac != null) {
connection = qConFac.createQueueConnection(user, pass);
} else if (tConFac != null) {
connection = tConFac.createTopicConnection(user, pass);
}
} else {
if (qConFac != null) {
connection = qConFac.createQueueConnection();
} else if (tConFac != null) {
connection = tConFac.createTopicConnection();
}
}
if (connection == null) {
connection = jmsConnectionFactory != null ? jmsConnectionFactory.getConnection() : null;
}
Session session = null;
MessageProducer producer = null;
if (connection != null) {
if (destType == JMSConstants.QUEUE) {
session =
((QueueConnection) connection).createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
producer = ((QueueSession) session).createSender((Queue) destination);
} else {
session =
((TopicConnection) connection).createTopicSession(false, Session.AUTO_ACKNOWLEDGE);
producer = ((TopicSession) session).createPublisher((Topic) destination);
}
}
return new JMSMessageSender(
connection,
session,
producer,
destination,
jmsConnectionFactory == null ? this.cacheLevel : jmsConnectionFactory.getCacheLevel(),
jmsSpecVersion,
destType == -1 ? null : destType == JMSConstants.QUEUE ? Boolean.TRUE : Boolean.FALSE);
}
}
@Override
public boolean runExample() throws Exception {
XAConnection connection = null;
InitialContext initialContext = null;
try {
// Step 1. Create an initial context to perform the JNDI lookup.
initialContext = getContext(0);
// Step 2. Lookup on the queue
Queue queue = (Queue) initialContext.lookup("/queue/exampleQueue");
// Step 3. Perform a lookup on the XA Connection Factory
XAConnectionFactory cf = (XAConnectionFactory) initialContext.lookup("/XAConnectionFactory");
// Step 4.Create a JMS XAConnection
connection = cf.createXAConnection();
// Step 5. Start the connection
connection.start();
// Step 6. Create a JMS XASession
XASession xaSession = connection.createXASession();
// Step 7. Create a normal session
Session normalSession = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
// Step 8. Create a normal Message Consumer
MessageConsumer normalConsumer = normalSession.createConsumer(queue);
normalConsumer.setMessageListener(new SimpleMessageListener());
// Step 9. Get the JMS Session
Session session = xaSession.getSession();
// Step 10. Create a message producer
MessageProducer producer = session.createProducer(queue);
// Step 11. Create two Text Messages
TextMessage helloMessage = session.createTextMessage("hello");
TextMessage worldMessage = session.createTextMessage("world");
// Step 12. create a transaction
Xid xid1 =
new DummyXid(
"xa-example1".getBytes(CharsetUtil.UTF_8),
1,
UUIDGenerator.getInstance().generateStringUUID().getBytes());
// Step 13. Get the JMS XAResource
XAResource xaRes = xaSession.getXAResource();
// Step 14. Begin the Transaction work
xaRes.start(xid1, XAResource.TMNOFLAGS);
// Step 15. do work, sending two messages.
producer.send(helloMessage);
producer.send(worldMessage);
Thread.sleep(2000);
// Step 16. Check the result, it should receive none!
checkNoMessageReceived();
// Step 17. Stop the work
xaRes.end(xid1, XAResource.TMSUCCESS);
// Step 18. Prepare
xaRes.prepare(xid1);
// Step 19. Roll back the transaction
xaRes.rollback(xid1);
// Step 20. No messages should be received!
checkNoMessageReceived();
// Step 21. Create another transaction
Xid xid2 =
new DummyXid(
"xa-example2".getBytes(),
1,
UUIDGenerator.getInstance().generateStringUUID().getBytes());
// Step 22. Start the transaction
xaRes.start(xid2, XAResource.TMNOFLAGS);
// Step 23. Re-send those messages
producer.send(helloMessage);
producer.send(worldMessage);
// Step 24. Stop the work
xaRes.end(xid2, XAResource.TMSUCCESS);
// Step 25. Prepare
xaRes.prepare(xid2);
// Step 26. No messages should be received at this moment
checkNoMessageReceived();
// Step 27. Commit!
xaRes.commit(xid2, false);
Thread.sleep(2000);
// Step 28. Check the result, all message received
checkAllMessageReceived();
return result;
} finally {
// Step 29. Be sure to close our JMS resources!
if (initialContext != null) {
initialContext.close();
}
if (connection != null) {
connection.close();
}
}
}