On 17/01/2018 16:40, Martin Bjorklund wrote:
Ladislav Lhotka <lho...@nic.cz> wrote:
<snip>
Ok. I'm ok with keeping the inline case as it is. However, I think
I don't agree. The metadata annotation solves real issues.
One issue with the annotation is that since the schema might be
different in different datastores, it means that the client needs to
read the annotation in all datastores, and then fetch the schemas. So
it is a bit more difficult to work with for a client.
I'm still not convinced that I really understand all the arguments here:
Using YLbis over YL seems to have obvious benefits to me, in that I
perceive that it gives a cleaner data model. But I also understand
Lou's concerns - although its not clear to me whether Lou's primary
concern is timing, or the fact that implementations are forced to use YLbis.
I also agree with Juergen that from an YLbis authors perspective YLbis
is quite close. I believe that the YANG model itself has been agreed
(at the interim meeting in Nov/Dec), and hence really what is left is
just tidying/enhancing the descriptive text in the document.
I don't really understand the benefits of the metadata annotations. It
feels like this is going to be more hassle because a client will have to
query each datastore separately rather than getting the information in a
single operation.
A regular (without SM) NMDA NC/YANG server supports multiple datastores,
but that information is only exposed via one so them (i.e.
<operational>). So, in a server supporting inline SM, it seems quite
natural to me for the mounted schema information to also only be
available via the mounted <operational>. This seems to mirror the
standard NC/YANG+YL behavior, and also seems to naturally recurse if
required.
Hence, for me, I see the choice as:
1) do we publish the existing model now (perhaps also mark the draft as
experimental) followed by an updated draft with the NMDA compatible module?
2) do we publish both models in a single draft (e.g. with the existing
model in an appendix)?
3) do we only publish a single version of the draft with an NMDA
compliant solution.
Thanks,
Rob
_______________________________________________
netmod mailing list
netmod@ietf.org
https://www.ietf.org/mailman/listinfo/netmod
