Re: [netconf] Adoption poll for draft-tgraf-netconf-yang-notifications-versioning

On Mon, May 15, 2023 at 11:17 PM Jürgen Schönwälder
<jschoenwaelder@constructor.university> wrote:

> So here we go. The change from (module, path) names to (module, path,
> version) names will trigger a series of followup works, like this one.
> Adding version numbers to how we name things is a fundamental change
> of YANG and its protocols (and people still pretend this change can be
> done without even changing the YANG version number).
>
>
I need to re-read the details in this draft, but it did not appear to work
with current YANG library restrictions.

Some obvious questions arise:

1) The YANG library allows ONE implementation of ONE revision of each
module.
How can the server have multiple implemented revisions of each module to
choose from?

2) The server decides (via operator configuration) which revisions of which
modules to use.
How can the client override this configuration by selecting filters?

3) If a client can request different revisions of a subtree for Push,
what revision do they receive if a <get> or <get-data> operation is done to
retrieve
that subtree?

I doubt that fixing things piecewise is the right strategy but I fear
> this is where the IETF is heading. The result will likely look like
> some patchwork glued together by some implementation specific bits and
> pieces.
>

I would prefer a coherent evolution of YANG (e.g. YANG 1.2) but that does
not appear likely.

>
> /js
>

Andy

>
> On Mon, May 15, 2023 at 01:42:14PM -0700, Mahesh Jethanandani wrote:
> > All,
> >
> > This is start of a two week poll on making
> draft-tgraf-netconf-yang-notifications-versioning-03 a working group
> > document. Please send email to the list indicating "yes/support” or
> "no/do not support".  If indicating no, please state your reservations
> > with the document.  If yes, please also feel free to provide comments
> you'd like to see addressed once the document is a WG document.
> >
> > The poll ends May 31.
> >
> > Mahesh and Kent (as co-chairs)
> >
> >
> >
> >
> >
>
> > _______________________________________________
> > netconf mailing list
> > netconf@ietf.org
> > https://www.ietf.org/mailman/listinfo/netconf
>
>
> --
> Jürgen Schönwälder              Constructor University Bremen gGmbH
> Phone: +49 421 200 3587         Campus Ring 1 | 28759 Bremen | Germany
> Fax:   +49 421 200 3103         <https://constructor.university/>
>
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