exec_auth token caching does not work

[roderik]

I have several EKS clusters I want to access using the nodejs client. Weirdly enough, the first cluster I access works, all subsequent clusters do not.

Digging into the code I found the following line:

https://github.com/kubernetes-client/javascript/blob/master/src/exec_auth.ts#L71

And when console logging, I found user.name to be 'undefined'. Which causes the fist call to fetch the token from cluster 1, and all the follow-up calls to different clusters use the first token, resulting in Unauthorized errors.

Looking at the KubeConfig (I always use loadFromOptions)

{
            "contexts" : [
                {
                    "name" : "level0", 
                    "context" : {
                        "user" : "staging-beige-frog", 
                        "cluster" : "staging-beige-frog"
                    }
                }
            ], 
            "clusters" : [
                {
                    "name" : "staging-beige-frog", 
                    "cluster" : {
                        "certificate-authority-data" : "...", 
                        "server" : "...", 
                        "skipTLSVerify" : true
                    }
                }
            ], 
            "users" : [
                {
                    "name" : "staging-beige-frog", 
                    "user" : {
                        "exec" : {
                            "apiVersion" : "client.authentication.k8s.io/v1alpha1", 
                            "command" : "aws-iam-authenticator", 
                            "args" : [
                                "token", 
                                "-i", 
                                "staging-beige-frog"
                            ]
                        }
                    }
                }
            ], 
            "currentContext" : "level0"
        }

I see the following line that fetches the user object:

https://github.com/kubernetes-client/javascript/blob/master/src/config.ts#L121

But it fetches the user key in the first user object, which does not contain name, that is a "level" higher, hence the "undefined".

Commenting out following lines makes it work

https://github.com/kubernetes-client/javascript/blob/master/src/exec_auth.ts#L71-L78

[brendandburns]

Ah, good catch! I will add a better unit test for this and fix.