Generate a Kubernetes client token for use anywhere!
WARNING: This is pretty hacky. This was just a fun idea I had to see if it could work. I would recommend using client-go as much as possible for k8s client code.
This proof of concept came from wanting to use the client-go libraries to get valid k8s user credentials for use with other non-rest clients (i.e. gRPC).
Currently, the client-go implementation relies heavily on http.RoundTripper to
inject the user credential into requests, but this makes it difficult to only
get the token to use elsewhere. Instead of trying to refactor client-go, this
library simply constructs a fake http.RoundTripper and intercepts the bearer
token. This means that you get all the nice token caching behavior out of the
box!
Note: This only supports bearer tokens - cert based auth is not supported.