chore: reduce refactoring

cns/kubecontroller/nodenetworkconfig/reconciler.go

@@ -160,31 +160,30 @@ func (r *Reconciler) Started(ctx context.Context) (bool, error) {
 // SetupWithManager Sets up the reconciler with a new manager, filtering using NodeNetworkConfigFilter on nodeName.
 func (r *Reconciler) SetupWithManager(mgr ctrl.Manager, node *v1.Node, cnsconfig *configuration.CNSConfig) error {
 	r.nnccli = nodenetworkconfig.NewClient(mgr.GetClient())
+	ipamV2Enabled := cnsconfig != nil && cnsconfig.EnableIPAMv2
 	err := ctrl.NewControllerManagedBy(mgr).
 		For(&v1alpha.NodeNetworkConfig{}).
 		WithEventFilter(predicate.Funcs{
 			// ignore delete events.
 			DeleteFunc: func(event.DeleteEvent) bool {
 				return false
 			},
-		}).
-		WithEventFilter(predicate.NewPredicateFuncs(func(object client.Object) bool {
-			// match on node controller ref for all other events.
-			return metav1.IsControlledBy(object, node)
-		})).
-		WithEventFilter(predicate.Funcs{
-			// check that the generation is the same iff IPAMv1 - status changes don't update generation.
+			// check that the generation is the same if IPAMv1 - status changes don't update generation.
 			UpdateFunc: func(ue event.UpdateEvent) bool {
 				if ue.ObjectOld == nil || ue.ObjectNew == nil {
 					return false
 				}
 				// IPAMv2 is idempotent and can process every update event.
-				if cnsconfig != nil && cnsconfig.EnableIPAMv2 {
+				if ipamV2Enabled {
 					return true
 				}
 				return ue.ObjectOld.GetGeneration() == ue.ObjectNew.GetGeneration()
 			},
 		}).
+		WithEventFilter(predicate.NewPredicateFuncs(func(object client.Object) bool {
+			// match on node controller ref for all other events.
+			return metav1.IsControlledBy(object, node)
+		})).
 		WithEventFilter(predicate.NewPredicateFuncs(func(object client.Object) bool {
 			// only process events on objects that are not being deleted.
 			return object.GetDeletionTimestamp().IsZero()