[rabbitmq-discuss] pika library: pass channel to channel state-change callback?

[Alexis Richardson]

Sigurd

It's fine and welcome to discuss AMQP clients on this list.  Thank-you for
the email.

I'd stick this on Github where people can see it ;-)

alexis


2010/9/1 Sigurd Høgsbro <sigurd.hogsbro at museeka.com>

> Sorry if discussion on pika is out of scope of this mailing-list, but I
> thought it preferential to mailing Tony directly.
>
> I'm use pika's asyncore programming model, and find it an excellent model
> for dealing with connection & channel setup/teardown.
>
> I have an issue on the channel state callback, which currently passes the
> ChannelHandler() as a parameter to the callback. As I understand it, the
> ChannelHandler() is not an object intended for client app usage, and does
> not that I can see provide any methods useful to the client app.
>
> As it works now, I cannot create a function to allocate a channel (using
> pika.AsyncoreConnection.channel()) and setup the callbacks (using
> channel.addStateChangeHandler()), as the channel state callback is called
> before I can store the reference to the returned Channel() object in my
> containing object.
>
> By replacing the ChannelHandler() object with the Channel() reference
> instead then the obvious channel operations (declaring of queues etc) could
> use this parameter and avoid the catch-22 issue.
>
> If there is general agreement to this change I'm happy to commit the
> required changes to Github.
>
> Cheers,
>
> Sigurd
>
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