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From Ted Ross <tr...@redhat.com>
Subject Re: 'client' APIs again
Date Thu, 31 Jul 2014 14:32:18 GMT

This looks really interesting.  I think this is a good framework to
build an extensible API to provide access to the good parts of AMQP
(flow control, exactly-once with recovery, transactions, etc., etc.).

Would you consider contributing it to the Proton project, perhaps as a
branch or a contrib so others can get involved?

What is the tool you use to create the tutorial code examples?


On 07/31/2014 06:52 AM, Gordon Sim wrote:
> Following on from the approach taken by Rafi in his demo of the new
> event support in the proton engine, I've sketched out a few examples for
> common 'client' scenarios using the proton engine and a 'toolkit' of
> useful event handlers and utilities.
> The idea behind this is to explore whether this approach is feasible as
> a general purpose API. It is a reactive style of programming, and is at
> present fully asynchronous/non-blocking.
> Many more examples are need to ensure all aspects are fully considered,
> but I think there is enough there to give an idea of the approach that
> we can then discuss and refine collectively. (Clearly the toolkit could
> also be expanded to cover higher-level and richer concepts as well).
> The Qpid Messaging API would remain, but Proton would be an alternative,
> particularly suited for fully asynchronous applications with the full
> power and flexibility of the engine where needed, but with the common
> cases made simpler.
> I've focused on python, but I think the approach could be extended to
> other languages. There is a little bit of 'tutorial' style text to
> introduce the examples (some reference documentation around the added
> utilities would also be needed):
>     http://grs.github.io/proton_examples/html/
> and the examples and utility code (some of which are based on Rafi's
> demo code) needed to run them is here:
>     https://github.com/grs/examples
> I think this looks like a promising approach to make proton more
> understandable and usable, improve AMQP adoption and get consensus on a
> clearer roadmap as far as Qpid APIs is concerned. However as always I'm
> eager to hear your thoughts! Don't hold back on criticism or voicing
> disagreement, it is better to have a frank conversation.
> --Gordon.
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