As a rule of thumb, we need to start doing proper deprecation on all public
interfaces, whether that's a CLI, client method signatures, APIs, etc. It's a
little late for this on the old vs. new glance client/CLI (unless Brian feels
the work can be reasonably done to make them compatible) but it's something we
need to be really mindful of going forward.
As a community we've tacitly made an N+1 promise of compatibility, so changes
like this would ideally support both code paths in Folsom and raise a
DeprecationWarning on the old one, then be completely removed in Grizzly. If we
wanted to be even nicer to people relying on these public interfaces we'd move
towards an N+2 timeline and start with a PendingDeprecationWarning in Folsom,
escalate to a DeprecationWarning in Grizzly, and finish with complete removal
in H***.
All the best,
- Gabriel
> -----Original Message-----
> From: [email protected]
> [mailto:openstack-
> [email protected]] On Behalf Of
> Vishvananda Ishaya
> Sent: Wednesday, August 01, 2012 10:35 AM
> To: Brian Waldon
> Cc: [email protected]
> Subject: Re: [Openstack] [glance] legacy client removal and python-
> glanceclient
>
>
> On Jul 31, 2012, at 10:09 PM, Brian Waldon <[email protected]> wrote:
> >
> > I do agree that this current upgrade story could be better, but how much
> better do you expect it to be and in what specific ways? If the command-line
> interface were backwards-compatibile, would that solve all your problems?
> I'm fine doing that for the v1.0.0 release as long as we can deprecate all the
> old behavior out for a v2.0.0 release. Do you expect the legacy python library
> to get installed with folsom? As a side note, I do want to point out that the
> python module paths do not conflict.
>
> Legacy compatibility would be a huge win if it is feasible.
>
> Vish
>
>
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