BPEL to OSB Transaction Propagation using SB Transport

How do we propagate the transaction from BPEL to OSB.

I am trying here a special use case

Ø  Place Message in the source queue

Ø  BPEL process consumes the message

Ø  BPEL then invokes a OSB proxy service

Ø  OSB proxy service invokes an OSB business service

Ø  OSB business service post the message to an outbound queue

If any error happens in the OSB layer, the transaction should roll back and the message has to be redelivered till the redelivery limit specified for the message. After the redelivery limit is reached the message should be stored in an error queue

Step 1

Create the following three queues in the weblogic domain

 1) MyDistributedQueue
 2) ErrorQueue
 3) TestOutQueue

Open MyDistiburedQueue and go to the tab "DeliveryFailure" and configure the ErrorQueue

Lets first do a positive test

1) Create BPEL Consumer Process which consumes message from the MyDistributedQueue
2) Create an OSB proxy service using SB Transport
3)OSB proxy then calls the OSB business service , which inturn send the message to the target queue.
4) Since SB Transport is used we need to use DirectBinding option from BPEL to call the OSB proxy service

OSB Proxy Service using SB Transport

OSB business service configuration

BEPL Process which consumes message from the source queue and calls the OSB Proxy Service

BPEL uses Direct Binding to invoke OSB ProxyService which uses SB Transport

Now post a message to the source queue

There is no error anywhere in the service and  BPEL consumes the message and send to OSB sucessfully

We can see the message in the target queue

Now lets simulate an error in the OSB Layer. Instead of an actual endpoint URI , change it to a wrong end point

Again post a message to the source queue

Now we can see the exceptions in the OSB logs

Now the transaction rolls back and the message is getting redelivered 3 times

Now in the target queue there wont be any message

Where as the message will be visible in the error queue configured for the source queue after the redelivery limit is reached

So by this approach the message is preserved in the error queue irrespective of  the error happened in BPEL layer or OSB layer