support updating status of resources managed by other controllers about metacontroller

[enisoc]

DecoratorController doesn't let you modify status because your changes would be overwritten anyway by the real Service controller. The Kubernetes controller model allows multiple users/clients/controllers to collaboratively edit spec, but status is completely owned by only one canonical controller for a given resource.

The usual way to plug in an implementation for type: LoadBalancer is through the cloudprovider interface. Unfortunately, this plug-in mechanism is not designed around controllers. Since the Service controller code interacts with the LoadBalancer implementation through compiled-in function calls, rather than through declarative API objects, there's not a perfect way for Metacontroller to help here short of replacing the Service controller entirely.

If the only reason you need to update status is to communicate the external IP to users, you could put that info in an annotation. It's not ideal because you'd need to tell users to look in a different place than usual, but that might be acceptable depending on your use case.

[gurvindersingh]

Thanks for your reply. I can discuss with our team the use of annotations for info rather than status. As that will help in reducing our code size.