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Re: [Netconf] draft-ietf-netconf-rfc6536bis: one week review of a specific change

Ladislav Lhotka <lhotka@nic.cz> Mon, 27 November 2017 11:35 UTC

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From: Ladislav Lhotka <lhotka@nic.cz>
To: Robert Wilton <rwilton@cisco.com>, Andy Bierman <andy@yumaworks.com>, Randy Presuhn <randy_presuhn@alumni.stanford.edu>
Cc: Netconf <netconf@ietf.org>
Date: Mon, 27 Nov 2017 12:35:23 +0100
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References: <987f0de3-00d3-37f0-c919-4fe4f0f16efc@cisco.com> <3138dace-d750-308f-0169-a26e8abce5d1@cisco.com> <5A05A4A4.3000304@tail-f.com> <CABCOCHT_5zHWf3mdNM+8uUd8sqZMKKiwVtr=O4C4BhNrbygNzw@mail.gmail.com> <4e2ff4c7-70bb-280d-b49d-423e70e7f42d@cisco.com> <CABCOCHSYYFrZxC11v_++adG2uCP7urxR=VOKX-+8zXA-qiBCTA@mail.gmail.com> <60763bcf-47d9-d538-f1b3-6d71e3c80d1d@cisco.com> <CABCOCHTEXwhAq6NzoAGHcC-EE19bXJ0kbqPS0hwJB5_+RtOfyg@mail.gmail.com> <e418e007-fbac-029d-9c77-ed33df3d233b@cisco.com> <c2663103-70c2-0f52-f24f-852462509e27@cisco.com> <e41c2a8f-5ed7-9f3e-6dc1-85182c66adbf@cisco.com> <CABCOCHQrSOgGEAPdz5TdGBCGBSPzgAspGRQkgQDr3=H4Xp9JSQ@mail.gmail.com> <d056fdcd-20a8-5459-24ea-81fcfe53e59b@cisco.com> <015101d36513$bba345e0$4001a8c0@gateway.2wire.net> <CABCOCHTg5x_3=u4fMVtF-Rn1T6+gH2ZLMKeo6z5iekUWNt3RXg@mail.gmail.com> <f9bab64f-aea7-9ae9-5a5a-ee2aa06cb85f@alumni.stanford.edu> <CABCOCHTjyH-gKuXJuanqMXmrhnSy2UYo+4tZ1MwTdgb2ji876g@mail.gmail.com> <87bmjot2rv.fsf@nic.cz> <ba8d9ba7-011e-d5ae-28cf-9a278bcff93d@cisco.com>
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Subject: Re: [Netconf] draft-ietf-netconf-rfc6536bis: one week review of a specific change
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On Mon, 2017-11-27 at 10:54 +0000, Robert Wilton wrote:
> Hi Lada,
> 
> 
> On 27/11/2017 10:49, Ladislav Lhotka wrote:
> > I have been criticising this auto-delete feature several times in the
> > past, and other people, too (I think Balazs was one). In my view, a sane
> > server behaviour would be to just report schema violation, rather than
> > delete anything automatically. This not only avoids the present NACM
> > issue but also helps prevent catastrophic mistakes.
> 
> Regarding auto-delete, do you have same opinion for both when and choice 
> statements, or do you seem their ideal behavior as being different?

No, it should IMO be the same: using another case in a choice would mean to
delete the existing case instance first (which may fail if the client has no
right to do so) and then create the new case. It's not a big deal but everything
 are explicit client's actions, no side effects.

Lada 

> 
> Thanks,
> Rob
-- 
Ladislav Lhotka
Head, CZ.NIC Labs
PGP Key ID: 0xB8F92B08A9F76C67

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