在提交JTA事务之前对JMS消息进行MDB激活

Question

I need synchronize JTA transaction with send JMS message - MDB should be activated after client JTA transaction commit. This should by possible when use XAConnectionFactory, but doesn't work in my example.

Example scenario:

• web service client send message with code = 0
• mdb receive message and print: START: code (NEW JTA TRANSACTION)
• mdb increment code and print: SEND: %code + 1%
• mdb send messag with new code value
• mdb sleep
• mdb print: END code
• mdb finish (TRANSACTION COMMIT)

Scenario is repeat until code < 10. I expect result:

START: 0
SEND: 1
END: 0
START: 1
SEND: 2
END: 1
START: 2
SEND: 3
END: 2
etc..

but currently I get:

...
START: 4
SEND: 5
END: 3
START: 5
SEND: 6
END: 4
START: 6
SEND: 7
END: 5
END: 6

My code:

• Webservice client

   @WebMethod @TransactionAttribute(TransactionAttributeType.REQUIRES_NEW) public void publish() { TestQueueUtil.sendToQueue(0); } 

• TestQueueUtil (JMS client)

   public static void sendToQueue(Integer code) { InitialContext initialContext; XAQueueConnection queueConnection = null; XAQueueSession queueSession = null; try { Hashtable env = new Hashtable(); env.put(Context.INITIAL_CONTEXT_FACTORY, "weblogic.jndi.WLInitialContextFactory"); initialContext = new InitialContext(env); XAConnectionFactory queueConnectionFactory = (XAConnectionFactory) initialContext.lookup("jms/dsk/ConnectionFactoryXA"); queueConnection = (XAQueueConnection) queueConnectionFactory.createXAConnection(); queueConnection.start(); queueSession = queueConnection.createXAQueueSession(); Queue queue = (Queue) initialContext.lookup("jms/dsk/TestQueue"); //QueueSender sender = MessageProducer producer = queueSession.createProducer(queue); Message jmsMessage = queueSession.createMessage(); jmsMessage.setIntProperty("code", code); producer.send(jmsMessage); producer.close(); queueConnection.stop(); } catch (Exception e) { throw new RuntimeException("sendToQueue", e); } finally { if (queueSession != null) { try { queueSession.close(); } catch (Exception e) { //ignore } } if (queueConnection != null) { try { queueConnection.close(); } catch (Exception e) { //ignore } } } } 

• TestQueueMDB

   @MessageDriven(mappedName = "jms/dsk/TestQueue", activationConfig = { @ActivationConfigProperty(propertyName = "acknowledgeMode", propertyValue = "Auto-acknowledge"), @ActivationConfigProperty(propertyName = "destinationType", propertyValue = "javax.jms.Queue") }) public class TestQueueMDB implements MessageListener { @Resource protected MessageDrivenContext messageDrivenContext; @TransactionAttribute(TransactionAttributeType.REQUIRES_NEW) public void onMessage(Message message) { Integer code = null; try { code = message.getIntProperty("code"); System.out.println("START: " + code); if (code < 10) { Integer newcode = code + 1; System.out.println("SEND: " + newcode); TestQueueUtil.sendToQueue(newcode); Thread.sleep(2000); } } catch (Exception e) { e.printStackTrace(); } finally { System.out.println("END: " + code); } } } 

What I do wrong ?

Answer 1

I found that I haven't transaction context on MDB !!!

When I checked transaction ID by calling

weblogic.transaction.TxHelper.getTransactionId() 

received null, and when call messageDrivenContext.getRollbackOnly() get exception

java.lang.IllegalStateException: [EJB:010156]Illegal attempt to call EJBContext.getRollbackOnly() from an EJB that was not participating in a transaction.

Reason of that was annotation

@TransactionAttribute(TransactionAttributeType.REQUIRES_NEW)

After remove it or change on

@TransactionAttribute(TransactionAttributeType.REQUIRED)

all working fine.

:)