[openstack-dev] [api][nova][ironic] Microversion API HTTP header

Ruby Loo rlooyahoo at gmail.com
Mon Jun 15 18:26:31 UTC 2015

On 15 June 2015 at 13:07, Jay Pipes <jaypipes at gmail.com> wrote:

> It has come to my attention in [1] that the microversion spec for Nova [2]
> and Ironic [3] have used the project name -- i.e. Nova and Ironic --
> instead of the name of the API -- i.e. "OpenStack Compute" and "OpenStack
> Bare Metal" -- in the HTTP header that a client passes to indicate a
> preference for or knowledge of a particular API microversion.
> The original spec said that the HTTP header should contain the name of the
> service type returned by the Keystone service catalog (which is also the
> official name of the REST API). I don't understand why the spec was changed
> retroactively and why Nova has been changed to return
> X-OpenStack-Nova-API-Version instead of X-OpenStack-Compute-API-Version
> HTTP headers [4].
> To be blunt, Nova is the *implementation* of the OpenStack Compute API.
> Ironic is the *implementation* of the OpenStack BareMetal API.
> The HTTP headers should never have been changed like this, IMHO, and I'm
> disappointed that they were. In fact, it looks like a very select group of
> individuals pushed through this change [5] with little to no input from the
> mailing list or community.
> Since no support for these headers has yet to land in the client packages,
> can we please reconsider this?
> Thanks,
> -jay
Hi Jay,

When I reviewed the changes in Ironic, that was one of the things I
noticed. I looked at the nova implementation at the time, and I saw 'nova'
so even though I thought it should have been 'compute' (and 'baremetal' for
Ironic), I thought it was OK to use 'ironic'. Sorry, that was the wrong
time for me to be a laaaaaamb ;)

I think we should deprecate and change to use 'baremetal' (if it isn't
going to be too painful).

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