UnifiedStorage: Default to running unified-grpc in integration tests (#93492)

pkg/storage/unified/apistore/prepare.go

@@ -80,16 +80,18 @@ func (s *Storage) prepareObjectForUpdate(ctx context.Context, updateObject runti
 
 	if previous.GetUID() == "" {
 		klog.Errorf("object is missing UID: %s, %s", obj.GetGroupVersionKind().String(), obj.GetName())
+	} else if obj.GetUID() != previous.GetUID() {
+		klog.Errorf("object UID mismatch: %s, was:%s, now: %s", obj.GetGroupVersionKind().String(), previous.GetName(), obj.GetUID())
+		obj.SetUID(previous.GetUID())
 	}
 
 	if obj.GetName() != previous.GetName() {
 		return nil, fmt.Errorf("name mismatch between existing and updated object")
 	}
 
-	obj.SetUID(previous.GetUID())
 	obj.SetCreatedBy(previous.GetCreatedBy())
 	obj.SetCreationTimestamp(previous.GetCreationTimestamp())
-	obj.SetResourceVersion("")
+	obj.SetResourceVersion("") // removed from saved JSON because the RV is not yet calculated
 
 	// Read+write will verify that origin format is accurate
 	origin, err := obj.GetOriginInfo()

pkg/storage/unified/apistore/store.go

@@ -29,6 +29,7 @@ import (
 
 	"github.com/grafana/grafana/pkg/apimachinery/utils"
 	grafanaregistry "github.com/grafana/grafana/pkg/apiserver/registry/generic"
+	"github.com/grafana/grafana/pkg/apiserver/rest"
 	"github.com/grafana/grafana/pkg/storage/unified/resource"
 )
 
@@ -468,11 +469,16 @@ func (s *Storage) GuaranteedUpdate(
 			mmm.SetResourceVersionInt64(rsp.ResourceVersion)
 			res.ResourceVersion = uint64(rsp.ResourceVersion)
 
-			if err := preconditions.Check(key, existingObj); err != nil {
-				if attempt >= MaxUpdateAttempts {
-					return fmt.Errorf("precondition failed: %w", err)
+			if rest.IsDualWriteUpdate(ctx) {
+				// Ignore the RV when updating legacy values
+				mmm.SetResourceVersion("")
+			} else {
+				if err := preconditions.Check(key, existingObj); err != nil {
+					if attempt >= MaxUpdateAttempts {
+						return fmt.Errorf("precondition failed: %w", err)
+					}
+					continue
 				}
-				continue
 			}
 		} else if !ignoreNotFound {
 			return apierrors.NewNotFound(s.gr, req.Key.Name)