[netmod] yanglint errors for ietf-subscribed-notifications

Mahesh Jethanandani <mjethanandani@gmail.com> Fri, 13 March 2020 20:14 UTC

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From: Mahesh Jethanandani <mjethanandani@gmail.com>
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Date: Fri, 13 Mar 2020 13:14:11 -0700
To: Netconf <netconf@ietf.org>, netmod@ietf.org
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Subject: [netmod] yanglint errors for ietf-subscribed-notifications
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As I mentioned in the other thread, I am seeing errors while trying to use yanglint to validate examples for modules that import ietf-subscribed-notifications. I see it with ietf-notification-capabilities and with my own draft ietf-https-notif. These errors do not appear with confd. 

Using ietf-notification-capabilites and the first example in the -12 version of the draft which I call examples-notification-capabilities-1.xml, and released models for ietf-yang-push and ietf-subscribed-notifications, I see two issues. The first one related to the statement 'required-instance’ in ietf-subscribed-notifications is discussed on the other thread, and I do not want to repeat it here. If I comment out the only instance of ‘required-instance’ in the module, I run into more errors:

bash-3.2$ yanglint -s -i -t auto -p /Volumes/External/git/iana/yang-parameters/ ietf-system-capabilities@2020-03-08.yang ietf-notification-capabilities@2020-03-09.yang examples-notification-capabilities-1.xml 
err : The leafref leaf is config but refers to a non-config leaf. (/ietf-subscribed-notifications:subscriptions/subscription/target/stream/stream)
err : Invalid value "subscription-policy" of "uses". (/ietf-subscribed-notifications:subscriptions/subscription/subscription-policy)
err : Copying data from grouping failed. (/ietf-subscribed-notifications:subscriptions/subscription/subscription-policy)
err : Module "ietf-subscribed-notifications" parsing failed.
err : Importing "ietf-subscribed-notifications" module into "ietf-yang-push" failed.
err : Module "ietf-yang-push" parsing failed.
err : Importing "ietf-yang-push" module into "ietf-notification-capabilities" failed.
err : Module "ietf-notification-capabilities" parsing failed.

While pyang gives the following error:

bash-3.2$  pyang -f tree ietf-subscribed-notifications@2019-09-09.yang > ietf-subscribed-notifications@2019-09-09-tree.txt
ietf-subscribed-notifications@2019-09-09.yang:381: error: the path for stream is config but refers to a non-config leaf "name" defined at ietf-subscribed-notifications@2019-09-09.yang:1046

Have other encountered this error? If we agree this is an error, is there a -bis to fix this?

Thanks.

Mahesh Jethanandani
mjethanandani@gmail.com