Abhishek,
On Mon, Jul 14, 2008 at 7:43 PM, wrote:
Ben,

Thank you very much for writing.

The idea is to provide some kind of message authorizing before passing it
to the RabbitMQ system for routing. That authorizing policy acts on all
the messages. Say, a message doesn't meet the necessary permissions, in
that case it may be disallowed to pass through and no need to route it.
Similarly, another functionality can be to add/delete similar filters in
the future.
With respect to permissions, AMQP has the concept of ACL based on
vhost, which you can configure on a per user basis and update as you
go along.

If you do not have the necessary permissions, you cannot start a
connection to the broker.

This may be a bit too coarse grained for you though.
Can you suggest something in this regard like Mule, Synapse etc., which
can serve our purpose.
I'm reasonably confident that Mule can offer some content based
routing that may be more applicable to your application.

Because AMQP would merely be a transport in Mule, you'd have to refer
to the Mule manual for this.

BTW, it is always a better idea to post to the Rabbit list, because
you can reach the entire subscription base who may have already solved
your problem.

On Mon, Jul 14, 2008 at 5:31 PM, Ben Hood wrote:
Can you please suggest one thing. We need to have an abstraction layer
between the publishers and the RabbitMQ server i.e. a message processor
sitting between the publisher and the RabbitMQ server that receives the
message from the publisher, checks for certain permissions/tags and then
forwards the message to the RabbitMQ system. Is there any ESB or
mediation
router that can be integrated with RabbitMQ and that can provide the
filtering functionality, like Mule or Apache Synapse?
Do you have any more detailed requirements about how things get
routed, e.g. what happens to messages that don't match a particular
condition.

This may help in making a suggestion.

BTW, at the core of Rabbit is a generic message routing mechanism
(binding queues to exchanges using patterns). This may be of interest
for this use case.
Ben

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