controller: add delete event filter for vpc

Updates the `LinodeVPCReconciler` to ignore self-generated delete events.

controller/linodevpc_controller.go

@@ -34,6 +34,8 @@ import (
 	ctrl "sigs.k8s.io/controller-runtime"
 	"sigs.k8s.io/controller-runtime/pkg/client"
 	"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
+	"sigs.k8s.io/controller-runtime/pkg/event"
+	"sigs.k8s.io/controller-runtime/pkg/predicate"
 	"sigs.k8s.io/controller-runtime/pkg/reconcile"
 
 	"github.com/go-logr/logr"
@@ -260,8 +262,16 @@ func (r *LinodeVPCReconciler) reconcileDelete(ctx context.Context, logger logr.L
 func (r *LinodeVPCReconciler) SetupWithManager(mgr ctrl.Manager) error {
 	_, err := ctrl.NewControllerManagedBy(mgr).
 		For(&infrav1alpha1.LinodeVPC{}).
-		WithEventFilter(predicates.ResourceNotPausedAndHasFilterLabel(mgr.GetLogger(), r.WatchFilterValue)).
-		Build(r)
+		WithEventFilter(
+			predicate.And(
+				// Filter for objects with a specific WatchLabel.
+				predicates.ResourceNotPausedAndHasFilterLabel(mgr.GetLogger(), r.WatchFilterValue),
+				// Do not reconcile the Delete events generated by the
+				// controller itself.
+				predicate.Funcs{
+					DeleteFunc: func(e event.DeleteEvent) bool { return false },
+				},
+			)).Build(r)
 	if err != nil {
 		return fmt.Errorf("failed to build controller: %w", err)
 	}