From adb76219198235bb069bb67e924455dceaaba7c4 Mon Sep 17 00:00:00 2001
From: Jordan Liggitt <liggitt@google.com>
Date: Wed, 6 Apr 2022 12:34:42 -0400
Subject: [PATCH] Revert "remove unwanted values returned from dry-run"

This reverts commit 60c1d58d02c7374645c00281dda3fd656264e1c5.
---
 .../pkg/registry/generic/registry/store.go    |  5 ---
 .../apiserver/pkg/util/dryrun/dryrun.go       | 34 -------------------
 test/integration/dryrun/dryrun_test.go        | 14 ++------
 3 files changed, 3 insertions(+), 50 deletions(-)

diff --git a/staging/src/k8s.io/apiserver/pkg/registry/generic/registry/store.go b/staging/src/k8s.io/apiserver/pkg/registry/generic/registry/store.go
index 6a090ae7b60..2d9a7599e88 100644
--- a/staging/src/k8s.io/apiserver/pkg/registry/generic/registry/store.go
+++ b/staging/src/k8s.io/apiserver/pkg/registry/generic/registry/store.go
@@ -439,11 +439,6 @@ func (e *Store) Create(ctx context.Context, obj runtime.Object, createValidation
 	if e.Decorator != nil {
 		e.Decorator(out)
 	}
-	if dryrun.IsDryRun(options.DryRun) {
-		if err := dryrun.ResetMetadata(obj, out); err != nil {
-			return nil, err
-		}
-	}
 	return out, nil
 }
 
diff --git a/staging/src/k8s.io/apiserver/pkg/util/dryrun/dryrun.go b/staging/src/k8s.io/apiserver/pkg/util/dryrun/dryrun.go
index f94542b65da..3e28c293453 100644
--- a/staging/src/k8s.io/apiserver/pkg/util/dryrun/dryrun.go
+++ b/staging/src/k8s.io/apiserver/pkg/util/dryrun/dryrun.go
@@ -16,41 +16,7 @@ limitations under the License.
 
 package dryrun
 
-import (
-	"k8s.io/apimachinery/pkg/api/errors"
-	"k8s.io/apimachinery/pkg/api/meta"
-	"k8s.io/apimachinery/pkg/runtime"
-)
-
 // IsDryRun returns true if the DryRun flag is an actual dry-run.
 func IsDryRun(flag []string) bool {
 	return len(flag) > 0
 }
-
-// ResetMetadata resets metadata fields that are not allowed to be set by dry-run.
-func ResetMetadata(originalObj, newObj runtime.Object) error {
-	originalObjMeta, err := meta.Accessor(originalObj)
-	if err != nil {
-		return errors.NewInternalError(err)
-	}
-	newObjMeta, err := meta.Accessor(newObj)
-	if err != nil {
-		return errors.NewInternalError(err)
-	}
-	// If a resource is created with dry-run enabled where generateName is set, the
-	// store will set the name to the generated name. We need to reset the name and restore
-	// the generateName metadata fields in order for the returned object to match the intent
-	// of the original template.
-	if originalObjMeta.GetGenerateName() != "" {
-		newObjMeta.SetName("")
-	}
-	newObjMeta.SetGenerateName(originalObjMeta.GetGenerateName())
-	// If UID is set in the dry-run output then that output cannot be used to create a resource. Reset
-	// the UID to allow the output to be used to create resources.
-	newObjMeta.SetUID("")
-	// If the resourceVersion is set in the dry-run output then that output cannot be used to create
-	// a resource. Reset the resourceVersion to allow the output to be used to create resources.
-	newObjMeta.SetResourceVersion("")
-
-	return nil
-}
diff --git a/test/integration/dryrun/dryrun_test.go b/test/integration/dryrun/dryrun_test.go
index 6f002c791aa..95897b90e70 100644
--- a/test/integration/dryrun/dryrun_test.go
+++ b/test/integration/dryrun/dryrun_test.go
@@ -18,7 +18,6 @@ package dryrun
 
 import (
 	"context"
-	"strings"
 	"testing"
 
 	v1 "k8s.io/api/core/v1"
@@ -48,11 +47,7 @@ var kindAllowList = sets.NewString()
 const testNamespace = "dryrunnamespace"
 
 func DryRunCreateWithGenerateNameTest(t *testing.T, rsc dynamic.ResourceInterface, obj *unstructured.Unstructured, gvResource schema.GroupVersionResource) {
-	// special resources with dots in the name cannot use generateName
-	if strings.Contains(obj.GetName(), ".") {
-		return
-	}
-	// Create a new object with generateName to ensure we don't taint the original object
+	// Create a new object with generateName
 	gnObj := obj.DeepCopy()
 	gnObj.SetGenerateName(obj.GetName() + "-")
 	gnObj.SetName("")
@@ -79,11 +74,8 @@ func DryRunCreateTest(t *testing.T, rsc dynamic.ResourceInterface, obj *unstruct
 		t.Fatalf("created object's name should be an empty string if using GenerateName: %v", createdObj)
 	}
 
-	// we won't have a generated name here, so we won't check for this case
-	if obj.GetGenerateName() == "" {
-		if _, err := rsc.Get(context.TODO(), obj.GetName(), metav1.GetOptions{}); !apierrors.IsNotFound(err) {
-			t.Fatalf("object shouldn't exist: %v, %v", obj, err)
-		}
+	if _, err := rsc.Get(context.TODO(), obj.GetName(), metav1.GetOptions{}); !apierrors.IsNotFound(err) {
+		t.Fatalf("object shouldn't exist: %v", err)
 	}
 }