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

[Juergen Schoenwaelder <[e-mail]>]

Folks, the more formats there are, the less interoperability we
get. If there are multiple formats, is there a mandatory to implement
format? Does the mandatory to implement format depend on the protocol
that is being used?

I prefer one format or if necessary I am fine with one mandatory to
implement format. An open ended collection of implementation specific
formats is super flexible but defeats the purpose of a standard,
namely interoperability.

/js

On Thu, Oct 04, 2018 at 05:41:22PM +0000, Kent Watsen wrote:
> 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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-- 
Juergen Schoenwaelder           Jacobs University Bremen gGmbH
Phone: [phone]         Campus Ring 1 | 28759 Bremen | Germany
Fax:   [phone]         <https://www.jacobs-university.de/>