vishvananda at gmail
Apr 30, 2012, 5:11 PM
Post #2 of 4
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Looking good.
A few points:
a) can we just do hasattr dispatch instead of isinstance. it seems more pythonic than forcing the use of the dispatcher base class
b) it seems like we should make the dispatcher pick version 1.0 instead of failing if version is not passed in, that way a new dispatcher could handle unversioned messages. Or did i miss some other magic way this is happening.
Vish
On Apr 30, 2012, at 3:31 PM, Russell Bryant wrote:
> Greetings,
>
> I held a session on adding version numbers to the RPC APIs at the last
> design summit. The idea was fairly non-controversial. The next step
> was to do some prototyping to nail down what it should look like. This
> will end up touching quite a bit of code, so it's important to get some
> consensus around what it will look like up front.
>
> I've made it far enough that there is enough to look at and provide
> feedback on.
>
> The code is in this branch:
>
> https://github.com/russellb/nova/tree/bp/versioned-rpc-apis
>
> The best place to start is in this doc:
>
>
> https://github.com/russellb/nova/blob/bp/versioned-rpc-apis/README-versioned-rpc-apis.rst
>
> There may be room for some additional code around helping managers
> support more than one version of an API. I figure that can shake out on
> an as-needed basis as existing code gets converted and APIs get changed.
>
> Feedback welcome!
>
> Thanks,
>
> --
> Russell Bryant
>
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