tracker

type Key struct {
	GroupKind      schema.GroupKind
	NamespacedName types.NamespacedName
}

type Tracker interface {
	// Track tells us that "obj" is tracking changes to the
	// referenced object.
	Track(ctx context.Context, ref Key, obj types.NamespacedName)

	// TrackChild tracks the child by the parent.
	TrackChild(ctx context.Context, parent, child client.Object, s *runtime.Scheme) error

	// Lookup returns actively tracked objects for the reference.
	Lookup(ctx context.Context, ref Key) []types.NamespacedName
}