Open Stack

On Fri, Feb 1, 2013 at 7:45 AM, Stephen Gran <stephen.gran at guardian.co.uk>wrote:

> Hi,
>
> On Thu, 2013-01-31 at 14:30 -0800, Vishvananda Ishaya wrote:
> > On Jan 31, 2013, at 12:17 PM, Stephen Gran <stephen.gran at guardian.co.uk>
> wrote:
> > >
> > > 2) Create a new tags table containing references to the resource type
> > > and ID.  This has the advantage that we won't need to make lots of API
> > > calls to return all the resources with a given tag, but also feels
> > > possibly over-denormalized (is that a word?).
> >
> > This would be the fastest way to implement the feature, but I suspect we
> will end up
> > with some pretty nasty querys to do filters by tags in this model.
>
> The proof of concept patch for doing it this way is at
> https://review.openstack.org/#/c/20412/ .   The queries aren't amazing,
> but they're not that awful either.  It currently hardcodes 'instance',
> but that's just a lookup table to fix.
>
> This doesn't mean I disagree about the right way to do it - if you think
> tags will serve a purpose in glance/quantum/etc beyond EC2 API
> compatibility, then that's the right way to do it.  I'm just saying that
> if it's not useful in it's own right, getting a cheap and cheerful EC2
> API compatibility fix a different way doesn't introduce huge amounts of
> awfulness.
>

I agree with Vish about leaning towards 1, because I think tags will be
useful for the OpenStack API as well.


>
> Cheers,
> --
> Stephen Gran
> Senior Systems Integrator - guardian.co.uk
>
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