KubernetesClientConfiguration.BuildDefaultConfig() does not populate namespace of the current context

[rynowak]

I'm using KubernetesClientConfiguration.BuildDefaultConfig() to try and emulate things operations the user could do at the command-line (using their current context).

I noticed that I don't get the namespace populated in the config. In this case I would expect it to be set to blazing-pizza but I get back null.

var config = KubernetesClientConfiguration.BuildDefaultConfig();
Console.WriteLine(config.Namespace); // always null

My contexts:

$ kubectl config get-contexts
CURRENT   NAME           CLUSTER        AUTHINFO                                NAMESPACE
*         rynowak-kubo   rynowak-kubo   <user>                                 blazing-pizza

$ kubectl version
Client Version: version.Info{Major:"1", Minor:"17", GitVersion:"v1.17.4", GitCommit:"8d8aa39598534325ad77120c120a22b3a990b5ea", GitTreeState:"clean", BuildDate:"2020-03-12T23:41:24Z", GoVersion:"go1.14", Compiler:"gc", Platform:"darwin/amd64"}

What I've noticed about this is that I can work around this because it's populated on ContextDetails but not on Context. I haven't been able to find any examples on the net of a case where Context.Namespace would get populated based on the yaml. Might be historical?

My (heavily redacted) ~/.kube/config

apiVersion: v1
clusters:
- cluster:
    certificate-authority-data: <cert>
    server: <server>
  name: rynowak-kubo
- cluster:
    certificate-authority-data: <cert>
    server: <server>
  name: rynowak-ndc-demo
contexts:
- context:
    cluster: rynowak-kubo
    namespace: blazing-pizza
    user: <user>
  name: rynowak-kubo
current-context: rynowak-kubo
kind: Config
preferences: {}
users:
- name: <user>
  user:
    client-certificate-data:  <cert>
    client-key-data: <key>
    token: <token>
- name: <user>
  user:
    client-certificate-data: <cert>
    client-key-data: <key>
    token: <token>

[rynowak]

I'm working on a fix for this - and as part of that I'm wondering if the existence of Context.Namespace is a mistake (vs ContextDetails.Namespace).

For instance the golang client doesn't have this: https://github.com/kubernetes-client/go/blob/master/kubernetes/config/api/types.go#L148