a48cfe9fe5
Automatic merge from submit-queue (batch tested with PRs 45382, 45384, 44781, 45333, 45543) Copy internal types to metrics Supersedes #45306. #45306 removed the internal types and suggested whoever needs the internal types should define their own copy, and use the code-gen tools to generated the conversion functions. Per offline discussion with @DirectXMan12, we wanted to go that direction but it's not clear where to put the internal types yet. Hence, as a temporary solution, we decided copy the referred client-go/pkg/api types into metrics api to avoid the dependency. The commit "remove need of registry from custom_metrics/client.go" is similar to what I did to the fake client in an earlier PR. Let me know if you want to put the commit in another PR.
This staging/src/k8s.io/client-go directory is the staging area of the client repo. It contains a versioned client, tools built around the client like the reflector, and all the client dependencies. The content will be periodically published to k8s.io/client-go repo.
The staged content is copied from the main repo, i.e., k8s.io/kubernetes, with directory rearrangement and necessary rewritings. To sync the content with the latest code in your local k8s.io/kubernetes, you need to run godep restore in k8s root directory, then run staging/copy.sh.
vendor/k8s.io/client-go is a symlink pointing to this staging area, so to use the packages in the staging area, you can import it as "vendor/client-go/", as if the client were vendored. The client will be vendored from k8s.io/client-go for real after the test matrix is converted to vendor k8s components.