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[Uri-review] Re: [art] Alternative representation of URIs in YANG

Kent Watsen <kent+ietf@watsen.net> Tue, 02 December 2025 19:29 UTC

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From: Kent Watsen <kent+ietf@watsen.net>
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Subject: [Uri-review] Re: [art] Alternative representation of URIs in YANG
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Hi Martin,

Thank you for your comments.

> On Nov 30, 2025, at 10:26 PM, Martin J. Dürst <duerst@it.aoyama.ac.jp> wrote:
> 
> Hello Tom, others,
> 
> Many thanks to Tom for providing the pointer to the 'uri' datatype in RFC 6021. That suggests to me that one of the questions that should be answered is whether the decomposition is needed at all.

The document previously used the "ietf-inet:uri" typedef from RFC 6991 (previously RFC 6021).  The WG complained that the unstructured format did not good exhibit YANG-fu (best practice), making it hard to apply/validate defaults and constraints on individual fields.  From a YANG-outlook perspective, the "ietf-inet:uri" typedef is likely to be rarely used.


> Also, with respect to the name, instead of 'ietf-uri', 'decomposed-uri' or 'uri-decomposition' may be more appropriate.

Is a name-change actually needed?  Is a structured URI not still a "URI"?  Honest question.

FWIW, YANG has no issue with there being both a typedef called "ietf-inet:uri" and grouping called "ietf-uri:uri".

Thanks,
Kent  // author

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