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Re: [core] content-formats for cbor YANG

Michel Veillette <Michel.Veillette@trilliantinc.com> Fri, 21 April 2017 15:49 UTC

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From: Michel Veillette <Michel.Veillette@trilliantinc.com>
To: Carsten Bormann <cabo@tzi.org>, peter van der Stok <consultancy@vanderstok.org>
CC: Core <core@ietf.org>
Thread-Topic: [core] content-formats for cbor YANG
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Date: Fri, 21 Apr 2017 15:49:18 +0000
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Subject: Re: [core] content-formats for cbor YANG
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Hi Peter

About "payload of an array of one item can be optimized to just one item"

I agree with Carsten, I most cases, this rule have the potential to create ambiguities.
In the specific case of a notification, the payload can be either a CBOR map (single notification) or a CBOR array (multiple notifications).
A single Content-Format (e.g. yang-value+cbor) will work but a solution with two Content-Format seem to be cleaner.

Regards,
Michel

-----Original Message-----
From: Carsten Bormann [mailto:cabo@tzi.org] 
Sent: Friday, April 21, 2017 5:01 AM
To: peter van der Stok <consultancy@vanderstok.org>
Cc: Michel Veillette <Michel.Veillette@trilliantinc.com>; Core <core@ietf.org>
Subject: Re: [core] content-formats for cbor YANG

On Apr 21, 2017, at 09:18, peter van der Stok <stokcons@xs4all.nl> wrote:
> 
> Because the CoMI text now says that the payload of an array of one 
> item can be optimized to just one item, I like to suppress the 
> yang-value+cbor and only retain the yang-values+cbor

That would create an ambiguity if a value can ever be an array.

What is so bad about the media type being very specific about what the payload is?

Grüße, Carsten

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