[rabbitmq-discuss] RabbitMQ AMQP 0-9-1 spec branch

Sun May 16 16:07:25 BST 2010

Thanks Matthew. I'll proceed with 0-9-1 support intact.

I'll wait to see how the 1-0 spec progresses before trying to get my  
head around that.

Regards,

Chris

On 15 May 2010, at 17:55, Matthew Sackman wrote:

> Hi Chris,
>
> On Sat, May 15, 2010 at 09:28:35AM +0100, Chris Duncan wrote:
>> Up until now I have tested against the AMQP 0-9-1 spec RabbitMQ
>> branch as well as 0-8. What are the plans for the 0-9-1 branch? Is
>> there going to be a RabbitMQ 0-9-1 stable release? I don't see much
>> point in continuing to support something that is not going to be
>> included in a stable release.
>
> Our current plans (and note, these can change, and there are not
> firm estimates attached to these) are that the next major release will
> be the new persister, and the following major release will be the  
> 0-9-1
> work. So yes, we are very much committed to the 0-9-1 branch which is
> receiving attention now. We are not quite sure just yet whether to
> attempt to do multi-protocol (i.e. support 0-8 and 0-9-1 in the same
> product) or just drop support for 0-8 all together.
>
> 0-9-1 is really a clarification of 0-8 and in nearly all cases  
> where 0-8
> is more ambiguous than 0-9-1, we implement the semantics of 0-9-1.
> Therefore, the impact to client libraries to move to 0-9-1 should  
> not be
> a huge amount of work - obviously all our client libraries will be  
> 0-9-1
> ready, and it sounds like the Ruby client is as well (David -  
> please do
> *not* drop support for 0-9-1!). There's also an arguement for saying
> that old, likely buggy, and unmaintained clients which are  
> currently 0-8
> only will either die or be rewritten to support 0-9-1 - that is a good
> outcome.
>
> On the other hand, if you, as users of Rabbit and client libraries,  
> are
> dependent on a 0-8 client, and moving to 0-9-1 is going to be a  
> massive
> issue for you, please let us know - we don't want to cause problems  
> for
> people, and certainly don't want to alienate users or the many many
> members of this community who have contributed their time, effort and
> coding prowess. That said, there is an attraction to forcing some  
> of the
> client libraries to receive some attention - for example a number  
> of our
> users run into issues because the particular client library they're
> using still doesn't support channel.flow. It would definitely be a  
> good
> thing if moving to 0-9-1 and dropping support for 0-8 would cause  
> those
> libraries to be fixed up, by more than just a change to the version in
> the protocol negotiation.
>
> As always, your comments and thoughts are very valuable to us.
>
> Matthew
>
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