Kubernetes undefined noderesources.preFilterState

Question

I am rewriting the logic of Kube.netes' NodeResourcesFit plugin, I want to use preFilterState like https://github.com/kube.netes/kube.netes/blob/419e0ec3d2512afd8c1f35a44862f856bc4ac10f/pkg/scheduler/framework/plugins/noderesources/fit.go#L91 , so I import it in the code:

import "k8s.io/kube.netes/pkg/scheduler/framework/plugins/noderesources"

and use it just like:

s, ok:= c.(*noderesources.preFilterState)

However I get an error: undefined: noderesources.preFilterState

I am not familiar with Kube.netes, so I don't know what is wrong with it. Thanks for your patience.

I try to print noderesources.Name but it failed too.

Answer 1

According to the link you're providing, preFilterState is not exported and therefore not accessible from the outside of the package. It has nothing to do with Kube.netes but with go:

• example: https://go.dev/tour/basics/3
• doc: https://go.dev/doc/effective_go#names

I have a feeling you are starting with go, I recommend you play a bit with the fundamentals of the language and maybe use an IDE/Text editor with intellisense to be able to know what you can and cannot call.