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On 4/10/2017 8:58 AM, Akihiro Motoki wrote:
>
> Is there any deprecation policy in novaclient python binding?
> I was not aware of deprecation warnings.
> If novaclient follows nova deprecation, it sounds reasonable to me.

Yes we deprecated the CLIs in this change in Newton:

https://review.openstack.org/#/c/347514/

That would emit a deprecation warning if you're using the CLIs. If you 
were using the latest microversion on those CLIs and it wasn't 
supported, we softened the blow by falling back to 2.35 so things would 
still work. That was dropped in the novaclient 8.0.0 release in Pike. 
There was also a pretty massive release note with that change.

The change to deprecate the API bindings came after it, but also in Newton:

https://review.openstack.org/#/c/348499/

I guess we weren't emitting a DeprecationWarning using the warnings.warn 
method on those, maybe we should have. That's what Horizon would have 
seen though, and probably why Horizon never noticed. The APIs were 
capped at 2.35 though, and a client specifically opting into >2.35 on 
those APIs would fail. Since Horizon hasn't been using nova 
microversions with the novaclient API bindings until now, again that is 
probably why no one in Horizon noticed.

-- 

Thanks,

Matt