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https://issues.apache.org/jira/browse/SYNAPSE-618?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Charith Dhanushka Wickramarachchi updated SYNAPSE-618:
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Attachment: messagestore_patch_3.diff
synapse_sample_1.xml
Added the JMX view for the Message Store
getSize() :int //give the current Message store size
resendAll() : void //synapse will try to re-deliver all the Messages in the
Message store.
deleteAll(): void // delete all the Messages in Message store
getMessageIds() : List<String> //gives IDs of all messages stored in the
MessageStore
resend(String messageID) : void //try to re-deliver the Message with given ID
delete(String messageID) : boolean //delete the Message with given id
getEnvelope(String messageID) : SOAPEnvelope // get the SOAPEnvelope of the
given Message ID
And added the feature to put a Mediation sequence with the Message store.So
when a message get stored in the store uses can point to a sequence to mediate.
This will be useful with notification mechanisms.
please review and commit
> [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, 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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