node: provide or recommend a podresources API client

[ffromani]

What would you like to be added?

The podresources API is a node-local API exposed by the kubelet graduating to GA in 1.28.
The project already exports the API definitition proper but not a client package.
Since this is a GA API, we should either provide easy to consume client code, or at least recommend a third party client.

For starters a golang client package is fine, and we should can extend and polish the existing client code.

Why is this needed?

Clients code wanting to consume the code maybe considering to reuse the existing client code, but this is actively discouraged.
One of the reasons seems to be that doing this will also require to import (and possibly vendor) k8s.io/kubernetes.

The only real option is to copy and paste the related code. For more details, the discussion started in the feature graduation blog post, which have more details and example code (the discussion should however continue here).

[edit] clarified why importing the existing client code is a bad idea, which if nothing else makes this issue more relevant. [/edit]

[ffromani]

/sig node

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[sftim]

How do we publish the .proto files for this? Are they a release artefact?

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How about making the sample API client code in another language (eg Python)? Using another language emphasizes that you can use this from a client implemented in any language.

We don't mind what language a third party writes their own implementation in, right?

[ffromani]

How do we publish the .proto files for this? Are they a release artefact?

Published in staging: https://github.com/kubernetes/kubernetes/tree/master/staging/src/k8s.io/kubelet/pkg/apis/podresources/v1

How about making the sample API client code in another language (eg Python)? Using another language emphasizes that you can use this from a client implemented in any language.

That would be fine. I'm suggesting to promote the golang client because it's a reasonnable starting point and I know for sure there are golang projects consuming the API. But adding more clients is fine and helpful.

We don't mind what language a third party writes their own implementation in, right?

AFAIK we don't mind at all