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[Netconf] yang push: push-change-update for leaf-lists

"Sterne, Jason (Nokia - CA/Ottawa)" <jason.sterne@nokia.com> Thu, 29 March 2018 16:45 UTC

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From: "Sterne, Jason (Nokia - CA/Ottawa)" <jason.sterne@nokia.com>
To: "netconf@ietf.org" <netconf@ietf.org>
Thread-Topic: yang push: push-change-update for leaf-lists
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Date: Thu, 29 Mar 2018 16:45:26 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/netconf/1_dhXyJS7T5LbUBQRkJste4S4aU>
Subject: [Netconf] yang push: push-change-update for leaf-lists
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Hi guys,

The yang push drafts reference the yang patch RFC for the format of a push-change-update (i.e. on-change).

If a user-ordered leaf-list (of strings) 'foo' (at the root) contains 2 entries 'test1' and 'test3', and a collector is subscribed to the configuration tree, and a client adds 'test2' to the leaf-list after 'test1', then I assume the push-change-update would contain just that one entry 'test2' right ?

    <operation>merge</operation>
    <target>/foo-ns:foo</target>
    <value>
      <foo xmlns="urn:foo.com:foo"
           nc:operation="merge"
           yang:insert="after"
           yang:value="test1">test2</foo>
    </value>

>From what I understand, the entire contents of the leaf-list (i.e. 'test1', 'test2' and 'test3' are *not* sent for an addition (or deletion) of a single entry.

As a secondary question/note -> don't we end up with redundant operation indicators (which could differ if an implementation had a bug) ?

Rgds,
Jason

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