[ovirt-users] oVirt SDK v4 backwards compatibility

[Karli Sjöberg]

On Tue, 2016-11-08 at 02:20 -0500, Tomas Jelinek wrote:
> 
> ----- Original Message -----
> > From: "Rafael Martins" <rmartins at redhat.com>
> > To: "Karli Sjöberg" <karli.sjoberg at slu.se>
> > Cc: users at ovirt.org
> > Sent: Monday, November 7, 2016 7:06:33 PM
> > Subject: Re: [ovirt-users] oVirt SDK v4 backwards compatibility
> > 
> > ----- Original Message -----
> > > From: "Karli Sjöberg" <karli.sjoberg at slu.se>
> > > To: "Rafael Martins" <rmartins at redhat.com>
> > > Cc: users at ovirt.org
> > > Sent: Monday, November 7, 2016 6:13:33 PM
> > > Subject: Re: [ovirt-users] oVirt SDK v4 backwards compatibility
> > > 
> > > 
> > > Den 7 nov. 2016 15:53 skrev Rafael Martins <rmartins at redhat.com>:
> > > > 
> > > > ----- Original Message -----
> > > > > From: "Karli Sjöberg" <karli.sjoberg at slu.se>
> > > > > To: users at ovirt.org
> > > > > Sent: Monday, November 7, 2016 3:06:10 PM
> > > > > Subject: [ovirt-users] oVirt SDK v4 backwards compatibility
> > > > > 
> > > > > Heya!
> > > > > 
> > > > > Quick question, if I have on my computer installed a newer
> > > > > version
> > > > > Python SDK than what´s installed on the engine (4.0.3 locally
> > > > > and 3.6.X
> > > > > in engine), is it possible to connect?
> > > > 
> > > > It is not possible, but you can still install the RPM for the
> > > > version 3
> > > > of
> > > > the SDK. Please note that the code of the SDK versions is not
> > > > compatible.
> > > 
> > > Ok, as I thought. But how does others handle that, like moVirt
> > > e.g? Is
> > > there
> > > a best-practice for backwards compatibility?
> 
> moVirt is not using the SDKs, it is talking to API directly. But the
> general rule for the clients 
> (moVirt but also ManageIQ) works like this:
> - check the version of the API right at the beginning
> - according to the found version use either the new or the old api

Ah, I see. OK, that answers my question pretty clearly, correct me if
I'm wrong; for anyone who wishes to write something in python, you 
have two SDK's installed (or, talk to the API directly) and check the
API version to determine which SDK you should use?

Is there a standard ("correct") way of checking the API version?

/K

> 
> > 
> > Right now if you use the old SDK you should be able to "talk" with
> > both 3.6
> > and 4.0, because 4.0 api provides backward compatibility with 3.6.
> > But I'm
> > not sure if you can rely on this. Juan may have more details for
> > you.
> > 
> > Thanks,
> > Rafael
> > 
> > > /K
> > > 
> > > > 
> > > > > TIA
> > > > > Karli Sjöberg
> > > > > _______________________________________________
> > > > > Users mailing list
> > > > > Users at ovirt.org
> > > > > http://lists.ovirt.org/mailman/listinfo/users
> > > > > 
> > 
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