Re: [netmod] Adoption Poll: draft-rtgyangdt-netmod-module-tags-02

Martin Bjorklund <mbj@tail-f.com> Thu, 08 February 2018 08:28 UTC

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Date: Thu, 08 Feb 2018 09:28:42 +0100 (CET)
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Subject: Re: [netmod] Adoption Poll: draft-rtgyangdt-netmod-module-tags-02
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Hi,

In the light of this discussion, I would like to clarify that my
support is for the problem of tagging *modules*, which I believe this
draft is all about.  I don't think we should extend this to tagging
*nodes*; I think that requires a different mechanism.


/martin


Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de> wrote:
> On Wed, Feb 07, 2018 at 02:02:55PM -0800, Andy Bierman wrote:
> 
> > IMO it will be difficult to agree on the details of this draft
> > without agreeing on the problem statement first.
> 
> +1
> 
> > I am interested in these tags as a new type of standard selection filter.
> > It can be applied to data retrieval, NACM rules, YANG push subtree
> > selection,
> > and probably many more use-cases.  So the problem statement
> > might be:
> > 
> >    There is a need for standardized mechanisms to classify YANG data nodes
> > with tags,
> >    which can be used in protocol operations to select matching data nodes,
> > based on tag values.
> >    This work includes the management and assignment of tags, and their
> > generalized use
> >    within protocol operations.
> 
> The I-D talks about tags for YANG _modules_, you are talking about
> tags for YANG data nodes and you seem to imply that these tags are
> associated to instance data and that they can be used in protocol
> operations. (And then I note we already have metadata that can be
> associated to instance data. And there was Andy's packages work, which
> can be seen as another way to tag collections of schema nodes.)
> 
> So yes, there is a need to agree on what the problem is that is to be
> solved (and to consider how solutions fit into the framework we
> already have in place).
> 
> /js
> 
> -- 
> Juergen Schoenwaelder           Jacobs University Bremen gGmbH
> Phone: +49 421 200 3587         Campus Ring 1 | 28759 Bremen | Germany
> Fax:   +49 421 200 3103         <https://www.jacobs-university.de/>
> 
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