[Camel-users] Cast a copy message to an endpoint when exception is thrown

On Tue, Dec 16, 2008 at 1:08 AM, radisb wrote:

Hello.
First of all thanks for the great framework.

My question is this:
After reading all this posts about transactions I understand that it is
backing system's responsibility to handle redeliveries.
But what if I just want send a copy of a message to an endpoint everytime a
redelivery occurs?
To be more specific here is a snippet:

from("transactedActiveMq:sourceQ").policy(ApropagationRequiredPolicy).process(AnExceptionThrowingProcessor);

Now I want to let backing system do its work on redelivery and delays but I
want to get notified every time an exception occurs, for example to send to
an endpoint or a queue a copy of the message that was "inside" processor
when exception fired. How could i do this?

Thanks a lot,
Bill
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Hi

The error handler stuff is not to easy to spot in the wiki:
http://activemq.apache.org/camel/error-handler.html

Using the exception clause:
http://activemq.apache.org/camel/exception-clause.html

Should let you be able to send a message somewhere when an exception is
thrown

onException(Exception.class).to("seda:damm")
from("transactedActiveMq:sourceQ").policy(ApropagationRequiredPolicy).process(AnExceptionThrowingProcessor);

Then when an exception occurs it's send to the seda queue damm and
proceeded, and thus the backing system should get the exception as
well and do it's rollback.

But the seda queue is not part of the TX so the message should stay there.



--

/Claus Ibsen
Apache Camel Committer
Blog: http://davsclaus.blogspot.com/

On Tue, Dec 16, 2008 at 9:37 PM, radisb wrote:
Claus, this works only if I have not put policy in the route. I think it is
due to the hidden feature of transactions with deadletter when policy is not
put in the route. I ll search more.

Claus Ibsen-2 wrote:
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