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https://issues.apache.org/jira/browse/QPID-3642?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alex Rudyy reassigned QPID-3642:
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Assignee: Keith Wall (was: Alex Rudyy)
Keith, could you please review and commit the patch attached?
> Implement Dead Letter Queue functionality
> -----------------------------------------
>
> Key: QPID-3642
> URL: https://issues.apache.org/jira/browse/QPID-3642
> Project: Qpid
> Issue Type: New Feature
> Components: Java Broker
> Reporter: Alex Rudyy
> Assignee: Keith Wall
> Fix For: 0.15
>
> Attachments:
> 0001-QPID-3642-QPID-3643-Add-Dead-Letter-Queue-functional.patch
>
>
> Implement functionality to move messages into Dead Letter Queue on reaching
> Max Delivery Count limit.
> The Maximum Delivery Count is a property of a queue. If the client
> application is unable to process a message more than a specified number of
> times, the then the broker either moves the message to the specified DLQ, or
> it is dropped (producing an operation log message).
> If the application is unable to process a message it must call either
> Session#recover() or Session#rollback() (depending on transactionality) on
> the Session in use. If during recovery the broker discovers that a message
> has been seen (at least) the maximum number of times then it will move the
> message to the DLQ or drop the message, depending on how the queue is
> configured.
> This feature can be enabled for a queue either through the XML configuration
> for the broker, or when declaring the queue using JMX. It is also necessary
> to enable a setting on the client. The feature is available for both
> synchronous consumers (i.e. those using MessageConsumer#receive()) and
> asynchronous consumers (i.e. those implementing MessageListener#onMessage)
> using all JMS delivery modes.
> When enabled for a given queue, the DLQ feature causes generation of a Dead
> Letter Exchange and a Dead Letter Queue, named according to the convention
> <queue_name>_DLE and <queue_name>_DLQ. If the client indicates it no longer
> wishes the receive the message (by means of the Max Delivery Count feature)
> then the message is routed through the dead letter exchange onto the DLQ and
> removed from the original queue.
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