add support for specifying a maximum for message number of delivery attempts
before moving messages to a dead letter queue
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Key: QPID-2970
URL: https://issues.apache.org/jira/browse/QPID-2970
Project: Qpid
Issue Type: New Feature
Components: Java Broker, Java Client
Reporter: Robbie Gemmell
Assignee: Robbie Gemmell
Fix For: 0.9
add support for specifying a maximum for message delivery attempts before
moving messages to a dead letter queue.
At a basic level, the features will work as follows: the consumer track the
number of times it has seen a message without successfull delivery, and when
this count is met/exceeded then during session rollback or recover it will
cause the message to be rejected with request not to be requeued. The broker
will be able to be configured when creating a queue as to whether or not it
need support such dead-lettering and set up the requisite alternate exchange to
route the messages to when they are rejected in this way. If enabled, then a
fanout exchange will be created as the alternate exchange for the queue with a
single queue bound, such that there is a 1:1 mapping of original queue and DLQ.
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