⚠️ Fakeclient: Clear typemeta for structured

The fakeclient currently differs from the liveclient in that if a
structured object is created that has typemeta set, it will retain that.
In contrast to that, the liveclient always strips it.

This change makes the fakeclient strip it just like the live client.

Author: alvaroaleman

pkg/client/fake/client.go

@@ -332,8 +332,9 @@ func (t versionedTracker) Create(gvr schema.GroupVersionResource, obj runtime.Ob
 		return fmt.Errorf("failed to get accessor for object: %w", err)
 	}
 	if accessor.GetName() == "" {
+		gvk, _ := apiutil.GVKForObject(obj, t.scheme)
 		return apierrors.NewInvalid(
-			obj.GetObjectKind().GroupVersionKind().GroupKind(),
+			gvk.GroupKind(),
 			accessor.GetName(),
 			field.ErrorList{field.Required(field.NewPath("metadata.name"), "name is required")})
 	}
@@ -433,8 +434,9 @@ func (t versionedTracker) updateObject(gvr schema.GroupVersionResource, obj runt
 	}
 
 	if accessor.GetName() == "" {
+		gvk, _ := apiutil.GVKForObject(obj, t.scheme)
 		return nil, apierrors.NewInvalid(
-			obj.GetObjectKind().GroupVersionKind().GroupKind(),
+			gvk.GroupKind(),
 			accessor.GetName(),
 			field.ErrorList{field.Required(field.NewPath("metadata.name"), "name is required")})
 	}
@@ -527,33 +529,35 @@ func (c *fakeClient) Get(ctx context.Context, key client.ObjectKey, obj client.O
 	if err != nil {
 		return err
 	}
+	gvk, err := apiutil.GVKForObject(obj, c.scheme)
+	if err != nil {
+		return err
+	}
 	o, err := c.tracker.Get(gvr, key.Namespace, key.Name)
 	if err != nil {
 		return err
 	}
 
-	_, isUnstructured := obj.(runtime.Unstructured)
-	_, isPartialObject := obj.(*metav1.PartialObjectMetadata)
-
-	if isUnstructured || isPartialObject {
-		gvk, err := apiutil.GVKForObject(obj, c.scheme)
-		if err != nil {
-			return err
-		}
-		ta, err := meta.TypeAccessor(o)
-		if err != nil {
-			return err
-		}
-		ta.SetKind(gvk.Kind)
-		ta.SetAPIVersion(gvk.GroupVersion().String())
+	ta, err := meta.TypeAccessor(o)
+	if err != nil {
+		return err
 	}
 
+	// If the final object is unstructuctured, the json
+	// representation must contain GVK or the apimachinery
+	// json serializer will error out.
+	ta.SetAPIVersion(gvk.GroupVersion().String())
+	ta.SetKind(gvk.Kind)
+
 	j, err := json.Marshal(o)
 	if err != nil {
 		return err
 	}
 	zero(obj)
-	return json.Unmarshal(j, obj)
+	if err := json.Unmarshal(j, obj); err != nil {
+		return err
+	}
+	return ensureTypeMeta(obj, gvk)
 }
 
 func (c *fakeClient) Watch(ctx context.Context, list client.ObjectList, opts ...client.ListOption) (watch.Interface, error) {
@@ -579,8 +583,7 @@ func (c *fakeClient) List(ctx context.Context, obj client.ObjectList, opts ...cl
 		return err
 	}
 
-	originalKind := gvk.Kind
-
+	originalGVK := gvk
 	gvk.Kind = strings.TrimSuffix(gvk.Kind, "List")
 
 	if _, isUnstructuredList := obj.(runtime.Unstructured); isUnstructuredList && !c.scheme.Recognizes(gvk) {
@@ -602,39 +605,30 @@ func (c *fakeClient) List(ctx context.Context, obj client.ObjectList, opts ...cl
 		return err
 	}
 
-	if _, isUnstructured := obj.(runtime.Unstructured); isUnstructured {
-		ta, err := meta.TypeAccessor(o)
-		if err != nil {
-			return err
-		}
-		ta.SetKind(originalKind)
-		ta.SetAPIVersion(gvk.GroupVersion().String())
-	}
-
 	j, err := json.Marshal(o)
 	if err != nil {
 		return err
 	}
 	zero(obj)
+	if err := ensureTypeMeta(obj, originalGVK); err != nil {
+		return err
+	}
 	objCopy := obj.DeepCopyObject().(client.ObjectList)
 	if err := json.Unmarshal(j, objCopy); err != nil {
 		return err
 	}
 
-	if _, isUnstructured := obj.(runtime.Unstructured); isUnstructured {
-		ta, err := meta.TypeAccessor(obj)
-		if err != nil {
-			return err
-		}
-		ta.SetKind(originalKind)
-		ta.SetAPIVersion(gvk.GroupVersion().String())
-	}
-
 	objs, err := meta.ExtractList(objCopy)
 	if err != nil {
 		return err
 	}
 
+	for _, o := range objs {
+		if err := ensureTypeMeta(o, gvk); err != nil {
+			return err
+		}
+	}
+
 	if listOpts.LabelSelector == nil && listOpts.FieldSelector == nil {
 		return meta.SetList(obj, objs)
 	}
@@ -775,7 +769,15 @@ func (c *fakeClient) Create(ctx context.Context, obj client.Object, opts ...clie
 
 	c.trackerWriteLock.Lock()
 	defer c.trackerWriteLock.Unlock()
-	return c.tracker.Create(gvr, obj, accessor.GetNamespace())
+	if err := c.tracker.Create(gvr, obj, accessor.GetNamespace()); err != nil {
+		return err
+	}
+
+	gvk, err := apiutil.GVKForObject(obj, c.scheme)
+	if err != nil {
+		return err
+	}
+	return ensureTypeMeta(obj, gvk)
 }
 
 func (c *fakeClient) Delete(ctx context.Context, obj client.Object, opts ...client.DeleteOption) error {
@@ -892,14 +894,22 @@ func (c *fakeClient) update(obj client.Object, isStatus bool, opts ...client.Upd
 	if err != nil {
 		return err
 	}
+	gvk, err := apiutil.GVKForObject(obj, c.scheme)
+	if err != nil {
+		return err
+	}
 	accessor, err := meta.Accessor(obj)
 	if err != nil {
 		return err
 	}
 
 	c.trackerWriteLock.Lock()
 	defer c.trackerWriteLock.Unlock()
-	return c.tracker.update(gvr, obj, accessor.GetNamespace(), isStatus, false, *updateOptions.AsUpdateOptions())
+	if err := c.tracker.update(gvr, obj, accessor.GetNamespace(), isStatus, false, *updateOptions.AsUpdateOptions()); err != nil {
+		return err
+	}
+
+	return ensureTypeMeta(obj, gvk)
 }
 
 func (c *fakeClient) Patch(ctx context.Context, obj client.Object, patch client.Patch, opts ...client.PatchOption) error {
@@ -922,16 +932,15 @@ func (c *fakeClient) patch(obj client.Object, patch client.Patch, opts ...client
 	if err != nil {
 		return err
 	}
-	accessor, err := meta.Accessor(obj)
+	gvk, err := apiutil.GVKForObject(obj, c.scheme)
 	if err != nil {
 		return err
 	}
-	data, err := patch.Data(obj)
+	accessor, err := meta.Accessor(obj)
 	if err != nil {
 		return err
 	}
-
-	gvk, err := apiutil.GVKForObject(obj, c.scheme)
+	data, err := patch.Data(obj)
 	if err != nil {
 		return err
 	}
@@ -978,13 +987,8 @@ func (c *fakeClient) patch(obj client.Object, patch client.Patch, opts ...client
 		panic("tracker could not handle patch method")
 	}
 
-	if _, isUnstructured := obj.(runtime.Unstructured); isUnstructured {
-		ta, err := meta.TypeAccessor(o)
-		if err != nil {
-			return err
-		}
-		ta.SetKind(gvk.Kind)
-		ta.SetAPIVersion(gvk.GroupVersion().String())
+	if err := ensureTypeMeta(obj, gvk); err != nil {
+		return err
 	}
 
 	j, err := json.Marshal(o)
@@ -1600,3 +1604,23 @@ func AddIndex(c client.Client, obj runtime.Object, field string, extractValue cl
 
 	return nil
 }
+
+func ensureTypeMeta(obj runtime.Object, gvk schema.GroupVersionKind) error {
+	ta, err := meta.TypeAccessor(obj)
+	if err != nil {
+		return err
+	}
+	_, isUnstructured := obj.(runtime.Unstructured)
+	_, isPartialObject := obj.(*metav1.PartialObjectMetadata)
+	_, isPartialObjectList := obj.(*metav1.PartialObjectMetadataList)
+	if !isUnstructured && !isPartialObject && !isPartialObjectList {
+		ta.SetKind("")
+		ta.SetAPIVersion("")
+		return nil
+	}
+
+	ta.SetKind(gvk.Kind)
+	ta.SetAPIVersion(gvk.GroupVersion().String())
+
+	return nil
+}