Returns a new kubernetes controller without starting it.

Returns a handler that runs the given function every time an update occurs, passing in the updated resource.

returns a handler that runs f() every time an update occurs, regardless of which type of update ensures only one f() can run at a time.

returns a handler that runs f() every time an update occurs, regardless of which type of update.

This custom Kubernetes controller is used to provide a shared caching mechanism for the solo-kit resource clients.