Re: [netconf] Current activities on RESTCONF/NETCONF to support paging

Robert Varga <nite@hq.sk> Fri, 15 March 2019 14:13 UTC

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To: "Wisotzky, Sven (Nokia - DE/Stuttgart)" <sven.wisotzky@nokia.com>, wangzitao <wangzitao@huawei.com>, Douglas Hubler <douglas@hubler.us>
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From: Robert Varga <nite@hq.sk>
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Subject: Re: [netconf] Current activities on RESTCONF/NETCONF to support paging
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On 15/03/2019 09:48, Wisotzky, Sven (Nokia - DE/Stuttgart) wrote:
>> Actually, there are some discussions in this WG. And there is an https://datatracker.ietf.org/drafts/draft-ietf-netconf-restconf-collection draft that try to address these issues (https://tools.ietf.org/html/draft-ietf-netconf-restconf-collection-00). IMO, these problems also exist in NETCONF, therefore, a common solution is required. 
>  
> It should have been clear from my initial ask. Yes, I am actually interested in a solution which serves both NETCONF and RESTCONF. The problem might be seen more important for RESTCONF - as this is considered protocol of choice for network controllers, talking about a larger scale of objects and traditionally used for communication between WebUI and back-end.

That is a valid point, but I think this would end up creating a protocol
on top of RESTCONF, where start of iteration/pagination would create
some session state on the server.

I do not want to explode the scope of work, but wouldn't WebUI users be
better served with a general XPath-based query facility (for example
allowing filter on GETs)?

Alternatively, could the problem perhaps be reformulated in terms of
draft-ietf-netconf-yang-push?

Regards,
Robert