[esb-issues] [JBoss JIRA] Commented: (JBESB-1282) How does a service work when message payload types are out of scope of the service?

Wed Oct 31 11:59:45 EDT 2007

    [ http://jira.jboss.com/jira/browse/JBESB-1282?page=comments#action_12385330 ] 

Tom Fennelly commented on JBESB-1282:
-------------------------------------

Kurt and I had a chat about this and came to the conclusion that there 2 issues... the generic issue as described by Kev above (i.e that the message payload is not opaque) and that there's potentially a general "patterns" type issue re whether or not messages being sent to the DLQ (or other orthogonal type services) should themselves be wrapped as payloads to a new message that is itself governed by its own set of contracts (i.e. between the ServiceInvoker and the DLQ).

> How does a service work when message payload types are out of scope of the service?
> -----------------------------------------------------------------------------------
>
>                 Key: JBESB-1282
>                 URL: http://jira.jboss.com/jira/browse/JBESB-1282
>             Project: JBoss ESB
>          Issue Type: Task
>      Security Level: Public(Everyone can see) 
>          Components: Rosetta, Process flow
>    Affects Versions: 4.2.1 IR2
>            Reporter: Tom Fennelly
>         Assigned To: Kurt Stam
>             Fix For: 4.2.1 triage
>
>         Attachments: stack.txt
>
>
> Just wondering e.g. the DLQ is running as a centralized service... it's forwarded a failed message that contains payload types that it knows nothing about... what should happen?
> I'm seeing an exception related to this on th aggregator quickstart.  The DLQ service is running on the AS, while the individual serives are all running standalone.  The DLQ Service has no visibility on the payload types bound to them failed messages that get delivered to it.

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