Re: [netmod] mount-point in anydata

[Lou Berger <[e-mail]>]

Martin,

On 1/17/2017 7:29 AM, Martin Bjorklund wrote:
> Hi,
>
> Currently, the schema mount draft says that the "mount-point"
> extension only can be defined in an "anydata" node.  However, this
> doesn't really work, since RFC 7950 says:
>
>    An anydata node is treated as an opaque chunk of data.  This data
>    can be modified in its entirety only.
>
> But the idea with schema mount is to build a composite model that can
> be manipulated just like a normal model, or a model that is
> augmented.  If we mount models in an "anydata" node, clients would
> have to replace the enitire mounted subtree in order to change e.g. a
> single leaf.
>
> For this reason, I propose that we go back to the previous model where
> "mount-point" would be allowed in "container" and "list".  Note that a
> client that doesn't know anything about these mounts would see some
> nodes in some unknown namespace; just like in the case that there is
> an augment that the client doesn't know about.

would it be better to have the  schema mount draft updates 7950 to allow
for sub-tree changes under anydata?  It "feels" cleaner and I'd expect
to have no real impact on servers as this would only impact servers
supporting the draft.  I'm unsure about client impact though...

Thanks,
Lou

>
> /martin
>
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