[ovirt-devel] Vdsm api package

[Sandro Bonazzola]

Il 29/Mar/2016 20:12, "Nir Soffer" <nsoffer at redhat.com> ha scritto:
>
> On Tue, Mar 29, 2016 at 9:09 PM, Sandro Bonazzola <sbonazzo at redhat.com>
wrote:
> >
> > Il 29/Mar/2016 20:02, "Nir Soffer" <nsoffer at redhat.com> ha scritto:
> >>
> >> Hi all,
> >>
> >> In the Vdsm call, we discussed a way to expose vdsm errors to its
clients
> >> (e.g, engine, hosted engine agent/setup).
> >>
> >> The idea is to have a vdsmapi package, holding:
> >> - errors.py - all public errors
> >> - events.py - all events sent by vdsm
> >> - client.py - library for communicating with vdsm
> >> - schema.py - the client will use this to autogenerate online help and
> >> validate messages
> >> - schema.yaml - we probably need several files (gluster, events, etc.)
> >>
> >> This will allow other projects talking with vdsm to do:
> >>
> >>     from vdsmapi import client, errors
> >>     ...
> >>     try:
> >>         client.list(vmId="xxxyyy")
> >>     except errors.NoSuchVM:
> >>         ...
> >>
> >> (this is a fake example, the real api may be different)
> >>
> >> Engine can build-require vdsmapi, and generate java module with the
> >> public errors from
> >> vdsmapi/errors.py module, instead of keeping this hardcoded in engine,
> >> and updating
> >> it every time vdsm adds new public error.
> >>
> >> Vdsm will use this package when building response to clients.
> >>
> >> Edi was concerned about sharing the errors module, so maybe we need a
> >> package:
> >>
> >> vdsmapi/
> >>     errors/
> >>         network.py
> >>         virt.py
> >>         storage.py
> >>         gluster.py
> >>
> >> We can still expose all the errors via errors/__init__.py, so clients
> >> do not have to care about
> >> the area of the application the error come from.
> >>
> >> Thoughts?
> >
> > For which version is this proposal targeted? 4.1?
>
> This is not targeted to any version yet, but I would be happy if we can
do this
> for next release.

I don't see it fitting 4.0 scope but I agree it would be nice to have in
4.1.

>
> Nir
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