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Re: [yang-doctors] Question about yang2dsdl error.

Ladislav Lhotka <lhotka@nic.cz> Fri, 08 November 2019 11:47 UTC

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From: Ladislav Lhotka <lhotka@nic.cz>
To: Christian Hopps <chopps@chopps.org>, YANG Doctors <yang-doctors@ietf.org>
Date: Fri, 08 Nov 2019 12:46:59 +0100
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Subject: Re: [yang-doctors] Question about yang2dsdl error.
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Hi Chris,

On Fri, 2019-11-08 at 06:29 -0500, Christian Hopps wrote:
> Hi yang-doctors,
> 
> I've got an example which yang2dsdl complains about (in it's expected
> unhelpful way :)

The error messages are produced by xmllint, and their unhelpfulness is
notorious.  Apart from that, xmllint RELAX NG validator is known to have other
bugs and gaps.

Have you tried to use Jing [1] for RELAX NG validation (the '-j' option to
yang2dsdl)?

Lada

[1] https://relaxng.org/jclark/jing.html

> In trying to figure out what was wrong, I gave yanglint a try, and it said the
> example was fine (no errors no output with --strict). Can anyone shed some
> light on what might be the issue. I'd really like yang2dsdl to pass here as
> well.
> 
> Example:
> 
> (default) [06:23:07 dak:~/w/reverse-metric-yang]$ cat test-xml-example2.xml
> <config xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
>   <routing
>       xmlns="urn:ietf:params:xml:ns:yang:ietf-routing">
>     <control-plane-protocols>
>       <control-plane-protocol>
>         <type xmlns:isis="urn:ietf:params:xml:ns:yang:ietf-isis">
>           isis:isis
>         </type>
>         <name>i0</name>
>         <isis xmlns="urn:ietf:params:xml:ns:yang:ietf-isis">
>           <area-address>00</area-address>
>         </isis>
>       </control-plane-protocol>
>     </control-plane-protocols>
>   </routing>
> </config>
> 
> yang2dsdl Error:
> 
> (default) [06:23:05 dak:~/w/reverse-metric-yang]$ yang2dsdl -x -t config -d
> .validate -v test-xml-example2.xml ietf-routing@2016-11-04.yang 
> ietf-isis@2019-10-15.yang
> == Generating RELAX NG schema '.validate/ietf-routing_ietf-isis-config.rng'
> Done.
> 
> == Generating Schematron schema '.validate/ietf-routing_ietf-isis-config.sch'
> Done.
> 
> == Generating DSRL schema '.validate/ietf-routing_ietf-isis-config.dsrl'
> Done.
> 
> == Validating grammar and datatypes ...
> Relax-NG validity error : Extra element control-plane-protocols in interleave
> test-xml-example2.xml:4: element control-plane-protocols: Relax-NG validity
> error : Element routing failed to validate content
> test-xml-example2.xml fails to validate
> 
> Thanks,
> Chris.
> _______________________________________________
> yang-doctors mailing list
> yang-doctors@ietf.org
> https://www.ietf.org/mailman/listinfo/yang-doctors
-- 
Ladislav Lhotka
Head, CZ.NIC Labs
PGP Key ID: 0xB8F92B08A9F76C67

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