What should my MessageHandler do to expect a redelivery of the same message with getDeliveryCount increased.

[yannywang]

I'm using HornetQ 2.2.5. Final.

My code will createa clientSession with (true, true, 1).

I then create a ClientConsumer with consumer.setMessageHandlr(new MyHandler());

in side MyHandler, what should I do in:

   public void onMessage(ClientMessage message) when something wrong happened and I want the same message to be redelivered with getDeliveryCount increased?

should I:

1.  throw exception in onMessage method?

or

2. message.acknowledge()?

or

3. message.acknowledge() and session.rollback()?

o4

4. session.rollback()?

or

5. session.commit() (without message.acknowledge?)

or

6. do nothing (no message acknowleddge, session has auto ack)

in my config, I've set:

   <max-delivery-attempts>6</max-delivery-attempts>

   <redelivery-delay>1000</redelivery-delay>

  <persist-delivery-count-before-delivery>true</persist-delivery-count-before-delivery>

Currently my choice is 6 yet I see redelivery every 5 minutes (instead of 1 second) with getDeliveryCount =1 all the time and the delviery attemps more than 6.

I expect the message to be moved to DLQ but hasn't seen that happening yet.

any suggestion?

[ataylor]

you should rollback to ensure the message is redelivered.

[yannywang]

Hi Andy,

so I should do No.4:session.rollback()?, not No.3  message.acknowledge() and session.rollback()?

do I need to have persist-delivery-count-before-delivery>true</persist-delivery-count-before-delivery> in order to see DeliveryCount increase? I believe I did No.4 before yet the DeliveryCount still remains.

I will try again and update.

[yannywang]

after I tried, I believe we need to do message.acknowledge() and session.rollbac(tru);