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Re: [netmod] comments on draft-ietf-netmod-yang-instance-file-format-04

Balázs Lengyel <balazs.lengyel@ericsson.com> Sun, 17 November 2019 14:17 UTC

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From: Balázs Lengyel <balazs.lengyel@ericsson.com>
To: Martin Bjorklund <mbj@tail-f.com>, "andy@yumaworks.com" <andy@yumaworks.com>
CC: "netmod@ietf.org" <netmod@ietf.org>
Thread-Topic: [netmod] comments on draft-ietf-netmod-yang-instance-file-format-04
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Date: Sun, 17 Nov 2019 14:17:08 +0000
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Subject: Re: [netmod] comments on draft-ietf-netmod-yang-instance-file-format-04
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See below BALAZS2.

-----Original Message-----
From: Martin Bjorklund <mbj@tail-f.com> 
Sent: 2019. november 7., csütörtök 16:25
To: andy@yumaworks.com
Cc: Balázs Lengyel <balazs.lengyel@ericsson.com>; netmod@ietf.org
Subject: Re: [netmod] comments on draft-ietf-netmod-yang-instance-file-format-04
> The schema-uri looks standard but the contents of the referenced YANG 
> instance file can be anything (as opposed to a pre-defined YANG 
> template like /yang-library).

Note that the name of this leaf is misleading (see my ealrier comments).  It is really 'same-schema-as-file', which means that it point to another YANG instance data file, which must specify its schema in one of the three ways.  Which may be another schema-uri, but in the end the recursion must stop and you must find a YANG instance data file that usses 'simplified-inline' or 'inline'.
BALAZS2: leaf name changes following Martin's suggestion

> The inline-content-schema object looks broken because a YANG file is a 
> text string.

It is supposed to be data nodes for /yang-library or perhaps /module-sets, or perhaps something else.  See the examples in section 3.2.

BALAZS2: The draft includes the text:
" A schema-uri leaf SHALL contain a URI that references another YANG   instance data file."
So just as Martin says: it is a reference to a YANG file but to a yang INSTANCE DATA file: which is yangdata.

/martin

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