Re: [netmod] WG adoption poll for draft-clemm-netmod-nmda-diff-00
Andy Bierman <andy@yumaworks.com> Thu, 04 October 2018 21:05 UTC
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From: Andy Bierman <andy@yumaworks.com>
Date: Thu, 04 Oct 2018 14:04:56 -0700
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To: Kent Watsen <kwatsen@juniper.net>
Cc: Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de>, "netmod@ietf.org" <netmod@ietf.org>
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Subject: Re: [netmod] WG adoption poll for draft-clemm-netmod-nmda-diff-00
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On Thu, Oct 4, 2018 at 1:09 PM, Kent Watsen <kwatsen@juniper.net> wrote: > Sure, one mandatory to implement format, others nice to have. > > Interoperability good. Agreed. > > > > But why YANG-patch and not something built for the purpose > > (e.g., YANG-diff) that, in particular, provides an actual diff as > > opposed to a data-tree operation that only shows one of the > > two values? > > > The yang-patch edit list could be augmented with an 'old-value' node. This seems reasonable to provide for leafs. > Kent // contributor > > > Andy > > > On 10/4/18, 3:27 PM, "Andy Bierman" <andy@yumaworks.com> wrote: > > > > On Thu, Oct 4, 2018 at 12:07 PM, Juergen Schoenwaelder < > j.schoenwaelder@jacobs-university.de> wrote: > > 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. > > > > I agree there needs to be 1 mandatory-to-implement format. > > > > IMO this needs to be YANG Patch because it is more precise then > constructing an XML tree with > > operation attributes in it (e.g., how else do you represent a delete or a > move?) > > Also, YANG Push is using YANG Patch format and common code for push and > diff would be > > possible. > > > > I think other formats should be allowed. > > This is very tool-specific. I could see how somebody might want > > a textual patch of the XML representation to produce the new XML > representation. > > > > > > /js > > > > Andy > > > > > 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 <netmod-bounces@ietf.org> on behalf of Ladislav Lhotka < > lhotka@nic.cz> > > Organization: CZ.NIC > > Date: Thursday, October 4, 2018 at 1:11 PM > > To: Robert Wilton <rwilton@cisco.com>, "netmod@ietf.org" < > netmod@ietf.org> > > 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 <phil@juniper.net> 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 > > > > > > > > > > > > _______________________________________________ > > > > > > netmod mailing list > > > > > > netmod@ietf.org > > > > > > https://urldefense.proofpoint.com/v2/url?u=https-3A__www. > ietf.org_mailman_listinfo_netmod&d=DwICAg&c=HAkYuh63rsuhr6Scbfh0UjBXeMK- > ndb3voDTXcWzoCI&r=9zkP0xnJUvZGJ9EPoOH7Yhqn2gsBYaGTvjISlaJdcZo&m= > 7s6VdzzH9Ol3BOCbVLBarBrQ5fD0vTt8k_I2KDEN97c&s=RVJcg5pzHW- > zi1OboCL4SX2huW9euHiVRSCor9n_APQ&e= > > > > > > . > > > > > > > > > > > _______________________________________________ > > > > > netmod mailing list > > > > > netmod@ietf.org > > > > > https://urldefense.proofpoint.com/v2/url?u=https-3A__www. > ietf.org_mailman_listinfo_netmod&d=DwICAg&c=HAkYuh63rsuhr6Scbfh0UjBXeMK- > ndb3voDTXcWzoCI&r=9zkP0xnJUvZGJ9EPoOH7Yhqn2gsBYaGTvjISlaJdcZo&m= > 7s6VdzzH9Ol3BOCbVLBarBrQ5fD0vTt8k_I2KDEN97c&s=RVJcg5pzHW- > zi1OboCL4SX2huW9euHiVRSCor9n_APQ&e= > > -- > > Ladislav Lhotka > > Head, CZ.NIC Labs > > PGP Key ID: 0xB8F92B08A9F76C67 > > > > _______________________________________________ > > netmod mailing list > > netmod@ietf.org > > https://urldefense.proofpoint.com/v2/url?u=https-3A__www. > ietf.org_mailman_listinfo_netmod&d=DwICAg&c=HAkYuh63rsuhr6Scbfh0UjBXeMK- > ndb3voDTXcWzoCI&r=9zkP0xnJUvZGJ9EPoOH7Yhqn2gsBYaGTvjISlaJdcZo&m= > 7s6VdzzH9Ol3BOCbVLBarBrQ5fD0vTt8k_I2KDEN97c&s=RVJcg5pzHW- > zi1OboCL4SX2huW9euHiVRSCor9n_APQ&e= > > > > _______________________________________________ > > netmod mailing list > > netmod@ietf.org > > https://www.ietf.org/mailman/listinfo/netmod > <https://urldefense.proofpoint.com/v2/url?u=https-3A__www.ietf.org_mailman_listinfo_netmod&d=DwMFaQ&c=HAkYuh63rsuhr6Scbfh0UjBXeMK-ndb3voDTXcWzoCI&r=9zkP0xnJUvZGJ9EPoOH7Yhqn2gsBYaGTvjISlaJdcZo&m=O7d-b9gyPvsasJo1ueKk3doDH7f5S5WQLo8_W6W3qt4&s=5LHhbfQZeoqYlC40T3mm-AEz4rSsyRWYjqTK7LuWTPw&e=> > > -- > Juergen Schoenwaelder Jacobs University Bremen gGmbH > Phone: +49 421 200 3587 Campus Ring 1 | 28759 Bremen | Germany > <https://maps.google.com/?q=Campus+Ring+1+%7C+28759+Bremen+%7C+Germany&entry=gmail&source=g> > Fax: +49 421 200 3103 <https://www.jacobs-university.de/ > <https://urldefense.proofpoint.com/v2/url?u=https-3A__www.jacobs-2Duniversity.de_&d=DwMFaQ&c=HAkYuh63rsuhr6Scbfh0UjBXeMK-ndb3voDTXcWzoCI&r=9zkP0xnJUvZGJ9EPoOH7Yhqn2gsBYaGTvjISlaJdcZo&m=O7d-b9gyPvsasJo1ueKk3doDH7f5S5WQLo8_W6W3qt4&s=zh7qEPSmwviaSqZBqG1GcqItXwI9pwyqIFVW6xC8rK8&e=> > > > > _______________________________________________ > netmod mailing list > netmod@ietf.org > https://www.ietf.org/mailman/listinfo/netmod > <https://urldefense.proofpoint.com/v2/url?u=https-3A__www.ietf.org_mailman_listinfo_netmod&d=DwMFaQ&c=HAkYuh63rsuhr6Scbfh0UjBXeMK-ndb3voDTXcWzoCI&r=9zkP0xnJUvZGJ9EPoOH7Yhqn2gsBYaGTvjISlaJdcZo&m=O7d-b9gyPvsasJo1ueKk3doDH7f5S5WQLo8_W6W3qt4&s=5LHhbfQZeoqYlC40T3mm-AEz4rSsyRWYjqTK7LuWTPw&e=> > > >
- [netmod] WG adoption poll for draft-clemm-netmod-… Kent Watsen
- Re: [netmod] WG adoption poll for draft-clemm-net… Jeff Tantsura
- Re: [netmod] WG adoption poll for draft-clemm-net… Alexander Clemm
- Re: [netmod] WG adoption poll for draft-clemm-net… Ladislav Lhotka
- Re: [netmod] WG adoption poll for draft-clemm-net… Qin Wu
- Re: [netmod] WG adoption poll for draft-clemm-net… Reshad Rahman (rrahman)
- Re: [netmod] WG adoption poll for draft-clemm-net… Kent Watsen
- Re: [netmod] WG adoption poll for draft-clemm-net… Reshad Rahman (rrahman)
- Re: [netmod] WG adoption poll for draft-clemm-net… Robert Wilton
- Re: [netmod] WG adoption poll for draft-clemm-net… Acee Lindem (acee)
- Re: [netmod] WG adoption poll for draft-clemm-net… Martin Bjorklund
- Re: [netmod] WG adoption poll for draft-clemm-net… Yingzhen Qu
- Re: [netmod] WG adoption poll for draft-clemm-net… Susan Hares
- Re: [netmod] WG adoption poll for draft-clemm-net… Kent Watsen
- Re: [netmod] WG adoption poll for draft-clemm-net… Balázs Lengyel
- Re: [netmod] WG adoption poll for draft-clemm-net… Phil Shafer
- Re: [netmod] WG adoption poll for draft-clemm-net… Martin Bjorklund
- Re: [netmod] WG adoption poll for draft-clemm-net… Robert Wilton
- Re: [netmod] WG adoption poll for draft-clemm-net… Ladislav Lhotka
- Re: [netmod] WG adoption poll for draft-clemm-net… Robert Wilton
- Re: [netmod] WG adoption poll for draft-clemm-net… Martin Bjorklund
- Re: [netmod] WG adoption poll for draft-clemm-net… Andy Bierman
- Re: [netmod] WG adoption poll for draft-clemm-net… Ladislav Lhotka
- Re: [netmod] WG adoption poll for draft-clemm-net… Kent Watsen
- Re: [netmod] WG adoption poll for draft-clemm-net… Juergen Schoenwaelder
- Re: [netmod] WG adoption poll for draft-clemm-net… Andy Bierman
- Re: [netmod] WG adoption poll for draft-clemm-net… Kent Watsen
- Re: [netmod] WG adoption poll for draft-clemm-net… Juergen Schoenwaelder
- Re: [netmod] WG adoption poll for draft-clemm-net… Reshad Rahman (rrahman)
- Re: [netmod] WG adoption poll for draft-clemm-net… Andy Bierman
- Re: [netmod] WG adoption poll for draft-clemm-net… Ladislav Lhotka
- Re: [netmod] WG adoption poll for draft-clemm-net… Ladislav Lhotka
- Re: [netmod] WG adoption poll for draft-clemm-net… Ladislav Lhotka
- Re: [netmod] WG adoption poll for draft-clemm-net… Alexander Clemm
- Re: [netmod] WG adoption poll for draft-clemm-net… Xufeng Liu
- Re: [netmod] WG adoption poll for draft-clemm-net… Tianran Zhou
- Re: [netmod] WG adoption poll for draft-clemm-net… Susan Hares
- Re: [netmod] WG adoption poll for draft-clemm-net… Kent Watsen
- Re: [netmod] WG adoption poll for draft-clemm-net… Alexander Clemm
- Re: [netmod] WG adoption poll for draft-clemm-net… Kent Watsen
- Re: [netmod] WG adoption poll for draft-clemm-net… Andy Bierman
- Re: [netmod] WG adoption poll for draft-clemm-net… Kent Watsen
- Re: [netmod] WG adoption poll for draft-clemm-net… Kent Watsen
- Re: [netmod] WG adoption poll for draft-clemm-net… Alexander Clemm