Re: [netmod] WG adoption poll for draft-clemm-netmod-nmda-diff-00

[Kent Watsen <[e-mail]>]

We agree that the diff-format should be client-selectable, modulo what the server supports.  yang-patch and edit-config both are viable.  Should we document them both?

That said, since neither edit-config nor yang-patch are diffing formats, so much as formats for converting one data tree to another, would it make sense to define an actual diffing format?  I would think that a diff would provide both values, not just a new value.

Kent // contributor


-----Original Message-----
From: netmod <[e-mail]> on behalf of Ladislav Lhotka <[e-mail]>
Organization: CZ.NIC
Date: Thursday, October 4, 2018 at 1:11 PM
To: Robert Wilton <[e-mail]>, "[e-mail]" <[e-mail]>
Subject: Re: [netmod] WG adoption poll for draft-clemm-netmod-nmda-diff-00

On Thu, 2018-10-04 at 14:17 +0100, Robert Wilton wrote:
> 
> On 04/10/2018 13:51, Ladislav Lhotka wrote:
> > On Thu, 2018-10-04 at 13:36 +0100, Robert Wilton wrote:
> > > On 04/10/2018 11:14, Martin Bjorklund wrote:
> > > > Phil Shafer <[e-mail]> wrote:
> > > > > Bal?zs Lengyel writes:
> > > > > > https://urldefense.proofpoint.com/v2/url?u=https-3A__tools.ietf.org_html_draft-2Dclemm-2Dnetmod-2Dnmda-2Ddiff-2D00&d=DwICAg&c=HAkYuh63rsuhr6Scbfh0UjBXeMK-ndb3voDTXcWzoCI&r=9zkP0xnJUvZGJ9EPoOH7Yhqn2gsBYaGTvjISlaJdcZo&m=7s6VdzzH9Ol3BOCbVLBarBrQ5fD0vTt8k_I2KDEN97c&s=gQWJtjc_2EF3QgRvABgZKsjqzuIw9yUq_xee6aFJOcw&e=
> > > > > [I've moved to a "deep lurker" role here, but ...]
> > > > > 
> > > > > Can we ensure this model contains a "format" leaf in the RPC's input
> > > > > so that future (and proprietary) formats can be supported?   That
> > > > > leaf can be an identityref that defaults to yang-patch.
> > > > I think this is a good idea.  I would prefer the edit-config format
> > > > over YANG patch for describing a diff.  The edit-config format is more
> > > > suited for this purpose imo.
> > > +1
> > > 
> > > I would like something closer to edit-config to be available via
> > > RESTCONF as well.
> > YANG Patch is IMO better because it clearly separates the target for the
> > edits
> > from the new content.
> > In edit-config these two are mixed together.
> Yes, that is primarily why I prefer the edit-config.  I perceive that it 
> is a denser and more efficient format.  I think that it is both easier 
> to construct (when diffing two trees) and also more efficient to apply 
> when generating an updated tree.

Except for certain corner cases, for example if two trees differ only in the
value of a single leaf but this leaf happens to be a list key.

Lada

> 
> Thanks,
> Rob
> 
> 
> > That being said, I support specifying format/media-type and having
> > potentially
> > multiple options.
> > 
> > Lada
> > 
> > > Thanks,
> > > Rob
> > > 
> > > 
> > > > /martin
> > > > 
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> > > > .
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-- 
Ladislav Lhotka
Head, CZ.NIC Labs
PGP Key ID: 0xB8F92B08A9F76C67

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