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From "Claus Ibsen (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CAMEL-4978) Dead Letter Channel: add onError with correspondence to onRedelivery
Date Fri, 24 Feb 2012 12:58:48 GMT

    [ https://issues.apache.org/jira/browse/CAMEL-4978?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13215592#comment-13215592
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Claus Ibsen commented on CAMEL-4978:
------------------------------------

@Andrey

Yeah patches is welcome. Since this is error handling, then we need unit tests as well, to
ensure it works, and to test against regressions etc.

About the name, maybe it should be named
- onFailedDeliveryRef to be in line with the onRedeliveryRef name.

                
> Dead Letter Channel: add onError with correspondence to onRedelivery
> --------------------------------------------------------------------
>
>                 Key: CAMEL-4978
>                 URL: https://issues.apache.org/jira/browse/CAMEL-4978
>             Project: Camel
>          Issue Type: Improvement
>          Components: camel-core
>    Affects Versions: 2.9.0
>            Reporter: Andrey Kazantsev
>            Priority: Minor
>             Fix For: Future
>
>
> When an error occurs there can be situation when some actions should be performed before
next redelivery attempt. These actions can be custom logging (in case of Dead Letter Channel
we don't have control on logger name and format), creating incident request in internal company
system, etc.
> Current version of Dead Letter Channel provides support for specifying processor which
is called when next redelivery attempt is performed. However, if delay between attempts is
long, this can be too late.
> I think we can implement support for specifying processor which will be called when error
occurs, e.g., onError property. Then this processor with information from provided Exchange
can take appropriate actions. For example, it can save this message for further investigation,
while Dead Letter Channel will keep going on redelivering it.
> If this feature is worth to be implemented, I can prepare a patch. I implemented a work-around
in my current project using onRedelivery, but I don't like it because of latency in redelivery
interval.

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