[openstack-dev] [api][qa][tc][nova][cinder] Testing of a microversioned world

Ken'ichi Ohmichi ken1ohmichi at gmail.com
Mon Mar 13 21:10:23 UTC 2017

2017-03-13 12:23 GMT-07:00 Jim Rollenhagen <jim at jimrollenhagen.com>:
> On Mon, Mar 13, 2017 at 12:58 PM, Chris Friesen
> <chris.friesen at windriver.com> wrote:
>> On 03/10/2017 01:37 PM, John Griffith wrote:
>>> Now that micro-versions are *the API versioning scheme to rule them all*
>>> one
>>> question I've not been able to find an answer for is what we're going to
>>> promise
>>> here for support and testing.  My understanding thus far is that the
>>> "community"
>>> approach here is "nothing is ever deprecated, and everything is supported
>>> forever".
>> Nova has so far taken this approach, but there has been talk of bumping
>> the minimum required microversion at every dev gathering.  It hasn't
>> happened yet, but if the support costs of maintaining the compat code
>> becomes too high then it could happen.
> Indeed. We discussed this at the PTG a bit[0], and plan to use ironic as an
> experiment for this. It's an admin-only API, so the API users should be the
> same (or in contact with) the folks deploying it, and so it shouldn't be as
> surprising. We hope to get some feedback and find out if doing this is as
> terrible as we keep saying.

That seems a nice plan.
The effective scope of bumping minimum microversion could be small and
it would be easier to get feedback from administrators by comparing
normal API consumers.


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