[Engine-devel] default config value (vdc_options; general)

[Alon Bar-Lev]

----- Original Message -----
> From: "Doron Fediuck" <dfediuck at redhat.com>
> To: "Alon Bar-Lev" <alonbl at redhat.com>
> Cc: "engine-devel" <engine-devel at ovirt.org>, "Gilad Chaplik" <gchaplik at redhat.com>
> Sent: Monday, December 3, 2012 2:32:55 PM
> Subject: Re: [Engine-devel] default config value (vdc_options; general)
> 
> ----- Original Message -----
> > From: "Alon Bar-Lev" <alonbl at redhat.com>
> > To: "Gilad Chaplik" <gchaplik at redhat.com>
> > Cc: "engine-devel" <engine-devel at ovirt.org>
> > Sent: Monday, December 3, 2012 12:19:53 PM
> > Subject: Re: [Engine-devel] default config value (vdc_options;
> > general)
> > 
> > 
> > 
> > ----- Original Message -----
> > > From: "Gilad Chaplik" <gchaplik at redhat.com>
> > > To: "engine-devel" <engine-devel at ovirt.org>
> > > Sent: Monday, December 3, 2012 12:16:11 PM
> > > Subject: [Engine-devel] default config value (vdc_options;
> > > general)
> > > 
> > > hi all,
> > > 
> > > In engine config table (vdc_options), when an option has a
> > > general
> > > as
> > > its version, and we fetch by version,
> > > we aren't getting the general value, rather the default one (hard
> > > coded in the config value enum)
> > > 
> > > Is this the wanted behavior and why?
> > > According to it general is some-kind of a version number instead
> > > of
> > > a
> > > configurable fallback to a missing version.
> > > 
> > > NOTE: currently there isn't any configurable default; in case the
> > > hard coded default != your configurable default,
> > > you need to specify it for each version.
> > > 
> > > I will be glad to fix it.
> > > 
> > > Thanks,
> > > Gilad.
> > 
> > I am about to rewrite this whole configuration subsystem.
> > 
> > Defaults will not be stored in database nor in code.
> > There will be default per version.
> > 
> > Regards,
> > Alon.
> 
> Please explain 'default per version';
> 
> - Can you have more than one configuration for the same version?

No, nothing will be changed, you will have one default per version with fallback to the generic version default.

> - What happens if I need a general configuration which isn't relevant
> for a specific version?

You will get the default of the generic version.

Alon.