[Virtual PTG][nova][sdk] Future of microversion support in SDK

Bal√°zs Gibizer balazs.gibizer at est.tech
Tue Jun 2 09:43:28 UTC 2020



On Mon, Jun 1, 2020 at 13:11, Artom Lifshitz <alifshit at redhat.com> 
wrote:
> tl;dr Artom to work on catching up the SDK to Nova's latest
> microversion, any new Nova microversion should come with a
> corresponding SDK patch.
> 
> Hello folks,
> 
> In the SDK/CLI room today we discussed making openstackclient (osc
> form now on) the main client for interacting with an OpenStack cloud
> and eventually getting rid of the python-*clients.
> 
> For context, openstacksdk (sdk from now on) currently has microversion
> support similar to how python-*clients handle it: autonegotiate with
> the server to the greatest common microversion. Osc, on the other
> hand, defaults to 2.1 - anything higher than that needs to be
> specified on the command line. The long term plan is to move osc to
> consume sdk.
> 
> In light of all this, we decided that the best way to achieve the goal
> stated in the first paragraph is to:
> 
> 1. Catch up sdk to Nova. This isn't as daunting as it looks, as the
> latest microversion sdk currently supports is 2.72. This means there's
> "only" two cycles of catchup to do before we reach Nova's current max
> of 2.87. I (Artom) have signed on to do that work, and Mordred has
> kindly promised quick review.

There is more work than that as support for some of the older 
microversions are also missing. See the etherpad [2]

> 
> 2. Officialise a Nova policy of "any new microverison should come with
> a corresponding SDK patch." This is essentially what [1] is aiming
> for, and it already has wide buy-in from the Nova community.
> 
> Converting osc to consume sdk is left to the osc/sdk community, though
> obviously any help there will be appreciated, I'm sure.
> 
> Please keep me honest if I said anything wrong :)
> 
> Cheers!
> 
> [1] https://review.opendev.org/#/c/717722/
> 

[2] https://etherpad.opendev.org/p/compute-api-microversion-gap-in-osc






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