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From "Charith Dhanushka Wickramarachchi (JIRA)" <j...@apache.org>
Subject [jira] Updated: (SYNAPSE-618) [GSoC] Implement a Dead Letter Channel for Synapse
Date Sat, 07 Aug 2010 10:20:15 GMT

     [ https://issues.apache.org/jira/browse/SYNAPSE-618?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Charith Dhanushka Wickramarachchi updated SYNAPSE-618:
------------------------------------------------------

    Attachment: messagestore_patch_4.diff
                synapse_sample_1.xml

Attaching the patch for JMS Message store feature. and a test configuration file i used in
my machine to test with this with ActiveMQ 

This patch will contain 

JMS Message store implementation

Message serializer for Axis2MessageContext and SynapseMessage context.

Due to the issue pointed out in
https://issues.apache.org/jira/browse/SYNAPSE-673

JMS message store will be supported only with global level endpoints. I'll fix the above issue
and improve this implementation in the future. 


 

 

> [GSoC] Implement a Dead Letter Channel for Synapse
> --------------------------------------------------
>
>                 Key: SYNAPSE-618
>                 URL: https://issues.apache.org/jira/browse/SYNAPSE-618
>             Project: Synapse
>          Issue Type: New Feature
>          Components: Core, Endpoints
>            Reporter: Hiranya Jayathilaka
>            Assignee: Hiranya Jayathilaka
>             Fix For: FUTURE
>
>         Attachments: messagestore_patch_1.diff, messagestore_patch_2.diff, messagestore_patch_3.diff,
messagestore_patch_4.diff, synapse_sample_1.xml, synapse_sample_1.xml, synapse_sample_1.xml,
synapse_sample_1.xml
>
>
> Currently when Synapse attempts to send a message and if it fails, following actions
can be configured to deal with the error:
> * Execute a fault sequence and handle the failed request gracefully
> * Fail-over to a different endpoint
> In addition to these, Synapse ESB should support the "dead letter channel" enterprise
integration pattern to deal with various errors that might occur during mediation or while
sending. With the dead letter channel, the failed message will be put into a message store
in the ESB. Later the ESB can retry to send the messages in the message store. 
> We should be able to have multiple implementations of the actual message store and should
be able to configure which store to use for a particular scenario. Users should be able to
implement their own message stores and plug into the ESB easily. To start with we can have
a simple in-memory message store and a persisting store based on JDBC or JMS. 
> References:
> http://www.eaipatterns.com/DeadLetterChannel.html
> https://issues.apache.org/jira/browse/SYNAPSE-263
> Possible Mentors:
> Hiranya Jayathilaka

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