Hello Lada,

Maybe you are right. It is probably only important in case of mixed modules.  However as Rob proposed the usage of yang-data-ext I will put it up as an open issue in Montreal. OK?

regards Balazs


On 6/26/2018 5:30 PM, Ladislav Lhotka wrote:
On Tue, 2018-06-26 at 15:58 +0200, Balazs Lengyel wrote:
Hello Lada,
I don't insist on using yang-data-ext, but I like it.  Isn't this the exact
use case for it: defining yang structured data that will never be loaded into
a datastore. In this case the structure of the instance-data-set fits.
On the other hand, if it's never loaded into a datastore, there is no need to
encapsulate the data and break tools that don't support yang-data-ext.

The encapsulation is really needed only if such data is mixed with "real" YANG
data node definitions in the same module - for example, if error-message schemas
are defined along with datastore contents, operations etc.

If I would remove the yd:yang-data instance-data-format  statement it would
not affect the actual file content. It just serves as  an indication that this
is not  a datastore definition.
A comment in the module should perfecty suffice. Andy argued with machine
readability, but I don't see how it can be useful here.

And, after all, if a server implementor for whatever weird reason decides to
implement this module, what's wrong on doing so?

Lada

regards Balazs

On 6/15/2018 9:41 AM, Ladislav Lhotka wrote:
Hi,

I support the adoption of this I-D as a workgroup item and my plan is to
implement it.

However, my suggestion is to avoid the use of yang-data-ext. It is
absolutely useless in this case and only complicates things that are
otherwise pretty trivial.

Lada

Balazs Lengyel <[email protected]> writes:

Hello,

I submitted a new version of the yang-instance-data draft updated with
comments from the last
IETF and others. I would like to get this adopted as a workgroup item.
Please review it and if you
like it please indicate that you support it as a workgroup item.

Changes:
    o  Redefined using yang-data-ext
    o  Moved meta data into ordinary leafs/leaf-lists
    o  Corrections, clarifications

regards Balazs

-------- Forwarded Message --------

  Subject:   New Version Notification for draft-lengyel-netmod-yang-
instance-data-01.txt
  Date:   Wed, 13 Jun 2018 06:47:16 -0700
  From:   [email protected]
  To:   Benoit Claise <[email protected]>, Balazs Lengyel
    <[email protected]>

A new version of I-D, draft-lengyel-netmod-yang-instance-data-01.txt
has been successfully submitted by Balazs Lengyel and posted to the
IETF repository.

Name:           draft-lengyel-netmod-yang-instance-data
Revision:       01
Title:          YANG Instance Data Files and their use for
Documenting Server Capabilities
Document date:  2018-06-13
Group:          Individual Submission
Pages:          10
URL:            https://www.ietf.org/internet-drafts/draft-lengyel-netmod-
yang-instance-data-01.txt
Status:         https://datatracker.ietf.org/doc/draft-lengyel-netmod-yang
-instance-data/
Htmlized:       https://tools.ietf.org/html/draft-lengyel-netmod-yang-inst
ance-data-01
Htmlized:       https://datatracker.ietf.org/doc/html/draft-lengyel-netmod
-yang-instance-data
Diff:           https://www.ietf.org/rfcdiff?url2=draft-lengyel-netmod-yan
g-instance-data-01

Abstract:
    This document specifies a standard file format for YANG instance
    data, that is data that could be stored in a datastore and whose
    syntax and semantics is defined by YANG models.  Instance data files
    can be used to provide information that is defined in design time.
    There is a need to document Server capabilities (which are often
    specified in design time), which should be done using instance data
    files.


Please note that it may take a couple of minutes from the time of
submission
until the htmlized version and diff are available at tools.ietf.org.

The IETF Secretariat

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Balazs Lengyel                       Ericsson Hungary Ltd.
Senior Specialist
Mobile: +36-70-330-7909              email: [email protected]

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