[Mono-dev] [PATCH] System.Messaging using AMQP (RabbitMQ)

Michael Barker mike at middlesoft.co.uk
Wed Oct 8 03:04:49 EDT 2008


>
> Thanks a lot for the updated implementation since April :) I had
> a look at the patch, and noticed that some essential stuff such as
> MessageQueue.GetEnumerator() and MessageEnumerator are left
> unimplemented.
>
> I've just had a look at the MessageEnumerator API and I'm not sure if it
can be implemented using AMQP as I don't think that its possible to
selectively remove messages from a queue (except with selectors, but I'll
get to that).  I'll try prototype it, but if it can't be implemented do you
think that an AMQP solution would be a no go?

BTW do you know if AMQP/Rabbit is going to support message peek
> and receive-by-id functionality (in some milestones), as you
> mentioned in the early discussion ?
> http://www.mail-archive.com/mono-devel-list <at> lists.ximian.com/msg16731.htm <http://www.mail-archive.com/mono-devel-list%20%3Cat%3E%20lists.ximian.com/msg16731.html>
>
> I had a chat with one of the standards committee members at a conference
around the end of April.  Selectors (to support ReceiveById) are unlikely to
be part of the standard, although there was a message on the RabbitMQ list
indicating that they'll probably add a server extension (that's compatible
with Apache QPid) to support it.  Queue browsers are being considered, but
peek functionality can be fudged by not acknowleding messages.  The other
area where there is a mismatch is queue discovery, AMQP uses a declare
model, i.e. all queues exist, but its not possible to find what they're
called.  Queue discovery is being considered for a future revision too.

Mike.

On Mon, Oct 6, 2008 at 9:08 PM, Michael Barker <mike at middlesoft.co.uk>wrote:

> Hi,
>
> Patch attached bugzilla report.
>
> https://bugzilla.novell.com/show_bug.cgi?id=432471
>
> Regards,
> Michael Barker.
>
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