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Re: [Netconf] [yang-doctors] YANG Doctor question: empty mandatory choice?

Martin Bjorklund <mbj@tail-f.com> Tue, 31 July 2018 19:02 UTC

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Date: Tue, 31 Jul 2018 21:02:17 +0200
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To: j.schoenwaelder@jacobs-university.de
Cc: evoit@cisco.com, yang-doctors@ietf.org, netconf@ietf.org
From: Martin Bjorklund <mbj@tail-f.com>
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Subject: Re: [Netconf] [yang-doctors] YANG Doctor question: empty mandatory choice?
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Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de> wrote:
> On Mon, Jul 30, 2018 at 08:41:42PM +0200, Martin Bjorklund wrote:
> > 
> > The empty mandatory choice does provide value since it requires that
> > some transport-specific parameters are configured.  However, can we
> > assume that all transports require configuration parameters here?
> 
> Can you have a receiver without any transport parameters?

Who knows?  Maybe the transport parameters are obvious and static?


> > It is probably safest to not have a mandatory choice, and instead ensure
> > that each transport augements the proper params -- and since this is
> > YANG 1.1, the transport params that are augmented can actually be
> > marked as mandatory.
> 
> Frankly, an empty mandatory choice quite clearly says "this is
> incomplete and unusable without an augmentation".

Yes.  The question is if we can guarantee that *all* transoports
*require* configuration params.


/martin


> 
> /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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