Hi Gerald
i understand the message flow in sample 111 as follows:
1. client sends SOAP/HTTP request for the getQuote operation to the
synapse proxy. This is an in-out operation and the client actually
waits synchronously for the response.
2. the synapse proxy accepts this request message and routes it to
SimpleStockQuoteService via JMS by posting a JMS message on the
SimpleStockQuoteService queue.
3. the SimpleStockQuoteService accepts the request and replies
synchronously with a response. But where is that reponse sent to?
When the request to the service was sent over JMS, Synapse created a
temporary Queue for the response message and awaits for it by blocking
Since this service is invoked through JMS in this scenario, i would
expect the response message to be sent to a JMS queue - but where is
that queue configured?
4. assuming that the reponse message was put on a JMS queue, synapse
must now listen on that queue. This is for the out-rule of synapse. I
don't see how/where i could tell synapse to listen on a particular JMS
queue for response messages from a service.
5. assuming that the response message was received by synapse from
that JMS queue, the synapse proxy then puts that message into the
SOAP/HTTP response for the initial SOAP/HTTP request
6. client receives the SOAP/HTTP response for his initial request
(synchronously, in this example).
Yep, the rest is all correct and indeed works! On a separate note, the
JMS destinations for responses have been discussed on the Axis2 lists
recently and some JIRAs are pending for some enhancements. The current
version of the JMS transport is the first cut implementation and now its
time to enhance it to cater to scenarios such as this
there seems to be a missing link here somewhere that handles the
translation from *one* request/response pair in SOAP/HTTP to *two*
queues (input and output) for the JMS transport. The root problem is
that the SOAP operation invoked by the client is an in-out operation.
I could imagine that the synapse proxy needs to inserts a WSA reply-to
header with a JMS-address before sending the request to the
SimpleStockQuoteService...
please help me solve this mystery! ;-)
kind regards,
gerald
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