Revert "support patch list of primitives"

This reverts commit 34891ad9f6.

pkg/apiserver/resthandler.go

@@ -591,11 +591,11 @@ func patchResource(
 			if err != nil {
 				return nil, err
 			}
-			currentPatch, err := strategicpatch.CreateStrategicMergePatch(originalObjJS, currentObjectJS, versionedObj, strategicpatch.SMPatchVersionLatest)
+			currentPatch, err := strategicpatch.CreateStrategicMergePatch(originalObjJS, currentObjectJS, versionedObj)
 			if err != nil {
 				return nil, err
 			}
-			originalPatch, err := strategicpatch.CreateStrategicMergePatch(originalObjJS, originalPatchedObjJS, versionedObj, strategicpatch.SMPatchVersionLatest)
+			originalPatch, err := strategicpatch.CreateStrategicMergePatch(originalObjJS, originalPatchedObjJS, versionedObj)
 			if err != nil {
 				return nil, err
 			}

pkg/apiserver/resthandler_test.go

@@ -213,7 +213,7 @@ func (tc *patchTestCase) Run(t *testing.T) {
 			continue
 
 		case api.StrategicMergePatchType:
-			patch, err = strategicpatch.CreateStrategicMergePatch(originalObjJS, changedJS, versionedObj, strategicpatch.SMPatchVersionLatest)
+			patch, err = strategicpatch.CreateStrategicMergePatch(originalObjJS, changedJS, versionedObj)
 			if err != nil {
 				t.Errorf("%s: unexpected error: %v", tc.name, err)
 				return

pkg/client/record/events_cache.go

@@ -244,9 +244,7 @@ func (e *eventLogger) eventObserve(newEvent *api.Event) (*api.Event, []byte, err
 
 		newData, _ := json.Marshal(event)
 		oldData, _ := json.Marshal(eventCopy2)
-		// TODO: need to figure out if we need to let eventObserve() use the new behavior of StrategicMergePatch.
+		patch, err = strategicpatch.CreateStrategicMergePatch(oldData, newData, event)
-		// Currently default to old behavior now. Ref: issue #35936
-		patch, err = strategicpatch.CreateStrategicMergePatch(oldData, newData, event, strategicpatch.SMPatchVersion_1_0)
 	}
 
 	// record our new observation

pkg/controller/volume/attachdetach/statusupdater/node_status_updater.go

@@ -59,10 +59,6 @@ type nodeStatusUpdater struct {
 }
 
 func (nsu *nodeStatusUpdater) UpdateNodeStatuses() error {
-	smPatchVersion, err := strategicpatch.GetServerSupportedSMPatchVersion(nsu.kubeClient.Discovery())
-	if err != nil {
-		return err
-	}
 	nodesToUpdate := nsu.actualStateOfWorld.GetVolumesToReportAttached()
 	for nodeName, attachedVolumes := range nodesToUpdate {
 		nodeObj, exists, err := nsu.nodeInformer.GetStore().GetByKey(string(nodeName))
@@ -112,7 +108,7 @@ func (nsu *nodeStatusUpdater) UpdateNodeStatuses() error {
 		}
 
 		patchBytes, err :=
-			strategicpatch.CreateStrategicMergePatch(oldData, newData, node, smPatchVersion)
+			strategicpatch.CreateStrategicMergePatch(oldData, newData, node)
 		if err != nil {
 			return fmt.Errorf(
 				"failed to CreateStrategicMergePatch for node %q. %v",

pkg/kubectl/cmd/BUILD

@@ -194,7 +194,6 @@ go_test(
         "//pkg/util/strings:go_default_library",
         "//pkg/util/term:go_default_library",
         "//pkg/util/wait:go_default_library",
-        "//pkg/version:go_default_library",
         "//pkg/watch:go_default_library",
         "//pkg/watch/versioned:go_default_library",
         "//vendor:github.com/spf13/cobra",

pkg/kubectl/cmd/annotate.go

@@ -223,12 +223,6 @@ func (o AnnotateOptions) RunAnnotate(f cmdutil.Factory, cmd *cobra.Command) erro
 			}
 			outputObj = obj
 		} else {
-			// retrieves server version to determine which SMPatchVersion to use.
-			smPatchVersion, err := cmdutil.GetServerSupportedSMPatchVersionFromFactory(f)
-			if err != nil {
-				return err
-			}
-
 			name, namespace := info.Name, info.Namespace
 			oldData, err := json.Marshal(obj)
 			if err != nil {
@@ -245,7 +239,7 @@ func (o AnnotateOptions) RunAnnotate(f cmdutil.Factory, cmd *cobra.Command) erro
 			if err != nil {
 				return err
 			}
-			patchBytes, err := strategicpatch.CreateTwoWayMergePatch(oldData, newData, obj, smPatchVersion)
+			patchBytes, err := strategicpatch.CreateTwoWayMergePatch(oldData, newData, obj)
 			createdPatch := err == nil
 			if err != nil {
 				glog.V(2).Infof("couldn't compute patch: %v", err)

pkg/kubectl/cmd/annotate_test.go

@@ -24,6 +24,8 @@ import (
 	"testing"
 
 	"k8s.io/kubernetes/pkg/api"
+	"k8s.io/kubernetes/pkg/apimachinery/registered"
+	"k8s.io/kubernetes/pkg/client/restclient"
 	"k8s.io/kubernetes/pkg/client/restclient/fake"
 	cmdtesting "k8s.io/kubernetes/pkg/kubectl/cmd/testing"
 	"k8s.io/kubernetes/pkg/runtime"
@@ -392,7 +394,7 @@ func TestAnnotateErrors(t *testing.T) {
 		f, tf, _, _ := cmdtesting.NewAPIFactory()
 		tf.Printer = &testPrinter{}
 		tf.Namespace = "test"
-		tf.ClientConfig = defaultClientConfig()
+		tf.ClientConfig = &restclient.Config{ContentConfig: restclient.ContentConfig{GroupVersion: &registered.GroupOrDie(api.GroupName).GroupVersion}}
 
 		buf := bytes.NewBuffer([]byte{})
 		cmd := NewCmdAnnotate(f, buf)
@@ -430,12 +432,6 @@ func TestAnnotateObject(t *testing.T) {
 			switch req.Method {
 			case "GET":
 				switch req.URL.Path {
-				case "/version":
-					resp, err := genResponseWithJsonEncodedBody(serverVersion_1_5_0)
-					if err != nil {
-						t.Fatalf("error: failed to generate server version response: %#v\n", serverVersion_1_5_0)
-					}
-					return resp, nil
 				case "/namespaces/test/pods/foo":
 					return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, &pods.Items[0])}, nil
 				default:
@@ -457,7 +453,7 @@ func TestAnnotateObject(t *testing.T) {
 		}),
 	}
 	tf.Namespace = "test"
-	tf.ClientConfig = defaultClientConfig()
+	tf.ClientConfig = &restclient.Config{ContentConfig: restclient.ContentConfig{GroupVersion: &registered.GroupOrDie(api.GroupName).GroupVersion}}
 
 	buf := bytes.NewBuffer([]byte{})
 	cmd := NewCmdAnnotate(f, buf)
@@ -486,12 +482,6 @@ func TestAnnotateObjectFromFile(t *testing.T) {
 			switch req.Method {
 			case "GET":
 				switch req.URL.Path {
-				case "/version":
-					resp, err := genResponseWithJsonEncodedBody(serverVersion_1_5_0)
-					if err != nil {
-						t.Fatalf("error: failed to generate server version response: %#v\n", serverVersion_1_5_0)
-					}
-					return resp, nil
 				case "/namespaces/test/replicationcontrollers/cassandra":
 					return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, &pods.Items[0])}, nil
 				default:
@@ -513,7 +503,7 @@ func TestAnnotateObjectFromFile(t *testing.T) {
 		}),
 	}
 	tf.Namespace = "test"
-	tf.ClientConfig = defaultClientConfig()
+	tf.ClientConfig = &restclient.Config{ContentConfig: restclient.ContentConfig{GroupVersion: &registered.GroupOrDie(api.GroupName).GroupVersion}}
 
 	buf := bytes.NewBuffer([]byte{})
 	cmd := NewCmdAnnotate(f, buf)
@@ -542,7 +532,7 @@ func TestAnnotateLocal(t *testing.T) {
 		}),
 	}
 	tf.Namespace = "test"
-	tf.ClientConfig = defaultClientConfig()
+	tf.ClientConfig = &restclient.Config{ContentConfig: restclient.ContentConfig{GroupVersion: &registered.GroupOrDie(api.GroupName).GroupVersion}}
 
 	buf := bytes.NewBuffer([]byte{})
 	cmd := NewCmdAnnotate(f, buf)
@@ -572,12 +562,6 @@ func TestAnnotateMultipleObjects(t *testing.T) {
 			switch req.Method {
 			case "GET":
 				switch req.URL.Path {
-				case "/version":
-					resp, err := genResponseWithJsonEncodedBody(serverVersion_1_5_0)
-					if err != nil {
-						t.Fatalf("error: failed to generate server version response: %#v\n", serverVersion_1_5_0)
-					}
-					return resp, nil
 				case "/namespaces/test/pods":
 					return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, pods)}, nil
 				default:
@@ -601,7 +585,7 @@ func TestAnnotateMultipleObjects(t *testing.T) {
 		}),
 	}
 	tf.Namespace = "test"
-	tf.ClientConfig = defaultClientConfig()
+	tf.ClientConfig = &restclient.Config{ContentConfig: restclient.ContentConfig{GroupVersion: &registered.GroupOrDie(api.GroupName).GroupVersion}}
 
 	buf := bytes.NewBuffer([]byte{})
 	cmd := NewCmdAnnotate(f, buf)

pkg/kubectl/cmd/apply.go

@@ -195,11 +195,6 @@ func RunApply(f cmdutil.Factory, cmd *cobra.Command, out io.Writer, options *App
 	visitedUids := sets.NewString()
 	visitedNamespaces := sets.NewString()
 
-	smPatchVersion, err := cmdutil.GetServerSupportedSMPatchVersionFromFactory(f)
-	if err != nil {
-		return err
-	}
-
 	count := 0
 	err = r.Visit(func(info *resource.Info, err error) error {
 		// In this method, info.Object contains the object retrieved from the server
@@ -270,13 +265,13 @@ func RunApply(f cmdutil.Factory, cmd *cobra.Command, out io.Writer, options *App
 				gracePeriod:   options.GracePeriod,
 			}
 
-			patchBytes, err := patcher.patch(info.Object, modified, info.Source, info.Namespace, info.Name, smPatchVersion)
+			patchBytes, err := patcher.patch(info.Object, modified, info.Source, info.Namespace, info.Name)
 			if err != nil {
 				return cmdutil.AddSourceToErr(fmt.Sprintf("applying patch:\n%s\nto:\n%v\nfor:", patchBytes, info), info.Source, err)
 			}
 
 			if cmdutil.ShouldRecord(cmd, info) {
-				patch, err := cmdutil.ChangeResourcePatch(info, f.Command(), smPatchVersion)
+				patch, err := cmdutil.ChangeResourcePatch(info, f.Command())
 				if err != nil {
 					return err
 				}
@@ -512,7 +507,7 @@ type patcher struct {
 	gracePeriod int
 }
 
-func (p *patcher) patchSimple(obj runtime.Object, modified []byte, source, namespace, name string, smPatchVersion strategicpatch.StrategicMergePatchVersion) ([]byte, error) {
+func (p *patcher) patchSimple(obj runtime.Object, modified []byte, source, namespace, name string) ([]byte, error) {
 	// Serialize the current configuration of the object from the server.
 	current, err := runtime.Encode(p.encoder, obj)
 	if err != nil {
@@ -536,8 +531,7 @@ func (p *patcher) patchSimple(obj runtime.Object, modified []byte, source, names
 	}
 
 	// Compute a three way strategic merge patch to send to server.
-	patch, err := strategicpatch.CreateThreeWayMergePatch(original, modified, current, versionedObject, p.overwrite, smPatchVersion)
+	patch, err := strategicpatch.CreateThreeWayMergePatch(original, modified, current, versionedObject, p.overwrite)
-
 	if err != nil {
 		format := "creating patch with:\noriginal:\n%s\nmodified:\n%s\ncurrent:\n%s\nfor:"
 		return nil, cmdutil.AddSourceToErr(fmt.Sprintf(format, original, modified, current), source, err)
@@ -547,9 +541,9 @@ func (p *patcher) patchSimple(obj runtime.Object, modified []byte, source, names
 	return patch, err
 }
 
-func (p *patcher) patch(current runtime.Object, modified []byte, source, namespace, name string, smPatchVersion strategicpatch.StrategicMergePatchVersion) ([]byte, error) {
+func (p *patcher) patch(current runtime.Object, modified []byte, source, namespace, name string) ([]byte, error) {
 	var getErr error
-	patchBytes, err := p.patchSimple(current, modified, source, namespace, name, smPatchVersion)
+	patchBytes, err := p.patchSimple(current, modified, source, namespace, name)
 	for i := 1; i <= maxPatchRetry && errors.IsConflict(err); i++ {
 		if i > triesBeforeBackOff {
 			p.backOff.Sleep(backOffPeriod)
@@ -558,7 +552,7 @@ func (p *patcher) patch(current runtime.Object, modified []byte, source, namespa
 		if getErr != nil {
 			return nil, getErr
 		}
-		patchBytes, err = p.patchSimple(current, modified, source, namespace, name, smPatchVersion)
+		patchBytes, err = p.patchSimple(current, modified, source, namespace, name)
 	}
 	if err != nil && p.force {
 		patchBytes, err = p.deleteAndCreate(modified, namespace, name)

pkg/kubectl/cmd/apply_test.go

@@ -188,12 +188,6 @@ func TestApplyObject(t *testing.T) {
 		NegotiatedSerializer: ns,
 		Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
 			switch p, m := req.URL.Path, req.Method; {
-			case p == "/version" && m == "GET":
-				resp, err := genResponseWithJsonEncodedBody(serverVersion_1_5_0)
-				if err != nil {
-					t.Fatalf("error: failed to generate server version response: %#v\n", serverVersion_1_5_0)
-				}
-				return resp, nil
 			case p == pathRC && m == "GET":
 				bodyRC := ioutil.NopCloser(bytes.NewReader(currentRC))
 				return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: bodyRC}, nil
@@ -208,7 +202,6 @@ func TestApplyObject(t *testing.T) {
 		}),
 	}
 	tf.Namespace = "test"
-	tf.ClientConfig = defaultClientConfig()
 	buf := bytes.NewBuffer([]byte{})
 
 	cmd := NewCmdApply(f, buf)
@@ -237,12 +230,6 @@ func TestApplyRetry(t *testing.T) {
 		NegotiatedSerializer: ns,
 		Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
 			switch p, m := req.URL.Path, req.Method; {
-			case p == "/version" && m == "GET":
-				resp, err := genResponseWithJsonEncodedBody(serverVersion_1_5_0)
-				if err != nil {
-					t.Fatalf("error: failed to generate server version response: %#v\n", serverVersion_1_5_0)
-				}
-				return resp, nil
 			case p == pathRC && m == "GET":
 				getCount++
 				bodyRC := ioutil.NopCloser(bytes.NewReader(currentRC))
@@ -266,7 +253,6 @@ func TestApplyRetry(t *testing.T) {
 		}),
 	}
 	tf.Namespace = "test"
-	tf.ClientConfig = defaultClientConfig()
 	buf := bytes.NewBuffer([]byte{})
 
 	cmd := NewCmdApply(f, buf)
@@ -296,12 +282,6 @@ func TestApplyNonExistObject(t *testing.T) {
 		NegotiatedSerializer: ns,
 		Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
 			switch p, m := req.URL.Path, req.Method; {
-			case p == "/version" && m == "GET":
-				resp, err := genResponseWithJsonEncodedBody(serverVersion_1_5_0)
-				if err != nil {
-					t.Fatalf("error: failed to generate server version response: %#v\n", serverVersion_1_5_0)
-				}
-				return resp, nil
 			case p == "/api/v1/namespaces/test" && m == "GET":
 				return &http.Response{StatusCode: 404, Header: defaultHeader(), Body: ioutil.NopCloser(bytes.NewReader(nil))}, nil
 			case p == pathNameRC && m == "GET":
@@ -316,7 +296,6 @@ func TestApplyNonExistObject(t *testing.T) {
 		}),
 	}
 	tf.Namespace = "test"
-	tf.ClientConfig = defaultClientConfig()
 	buf := bytes.NewBuffer([]byte{})
 
 	cmd := NewCmdApply(f, buf)
@@ -352,12 +331,6 @@ func testApplyMultipleObjects(t *testing.T, asList bool) {
 		NegotiatedSerializer: ns,
 		Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
 			switch p, m := req.URL.Path, req.Method; {
-			case p == "/version" && m == "GET":
-				resp, err := genResponseWithJsonEncodedBody(serverVersion_1_5_0)
-				if err != nil {
-					t.Fatalf("error: failed to generate server version response: %#v\n", serverVersion_1_5_0)
-				}
-				return resp, nil
 			case p == pathRC && m == "GET":
 				bodyRC := ioutil.NopCloser(bytes.NewReader(currentRC))
 				return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: bodyRC}, nil
@@ -379,7 +352,6 @@ func testApplyMultipleObjects(t *testing.T, asList bool) {
 		}),
 	}
 	tf.Namespace = "test"
-	tf.ClientConfig = defaultClientConfig()
 	buf := bytes.NewBuffer([]byte{})
 
 	cmd := NewCmdApply(f, buf)

pkg/kubectl/cmd/cmd_test.go

@@ -39,13 +39,8 @@ import (
 	cmdutil "k8s.io/kubernetes/pkg/kubectl/cmd/util"
 	"k8s.io/kubernetes/pkg/runtime"
 	"k8s.io/kubernetes/pkg/util/strings"
-	"k8s.io/kubernetes/pkg/version"
 )
 
-var serverVersion_1_5_0 = version.Info{
-	GitVersion: "v1.5.0",
-}
-
 func initTestErrorHandler(t *testing.T) {
 	cmdutil.BehaviorOnFatal(func(str string, code int) {
 		t.Errorf("Error running command (exit code %d): %s", code, str)

pkg/kubectl/cmd/edit.go

@@ -291,7 +291,7 @@ func runEdit(f cmdutil.Factory, out, errOut io.Writer, cmd *cobra.Command, args
 
 			switch editMode {
 			case NormalEditMode:
-				err = visitToPatch(originalObj, updates, f, mapper, resourceMapper, encoder, out, errOut, defaultVersion, &results, file)
+				err = visitToPatch(originalObj, updates, mapper, resourceMapper, encoder, out, errOut, defaultVersion, &results, file)
 			case EditBeforeCreateMode:
 				err = visitToCreate(updates, mapper, resourceMapper, out, errOut, defaultVersion, &results, file)
 			default:
@@ -415,22 +415,9 @@ func getMapperAndResult(f cmdutil.Factory, args []string, options *resource.File
 	return mapper, resourceMapper, r, cmdNamespace, err
 }
 
-func visitToPatch(originalObj runtime.Object, updates *resource.Info,
+func visitToPatch(originalObj runtime.Object, updates *resource.Info, mapper meta.RESTMapper, resourceMapper *resource.Mapper, encoder runtime.Encoder, out, errOut io.Writer, defaultVersion unversioned.GroupVersion, results *editResults, file string) error {
-	f cmdutil.Factory,
-	mapper meta.RESTMapper, resourceMapper *resource.Mapper,
-	encoder runtime.Encoder,
-	out, errOut io.Writer,
-	defaultVersion unversioned.GroupVersion,
-	results *editResults,
-	file string) error {
-
-	smPatchVersion, err := cmdutil.GetServerSupportedSMPatchVersionFromFactory(f)
-	if err != nil {
-		return err
-	}
-
 	patchVisitor := resource.NewFlattenListVisitor(updates, resourceMapper)
-	err = patchVisitor.Visit(func(info *resource.Info, incomingErr error) error {
+	err := patchVisitor.Visit(func(info *resource.Info, incomingErr error) error {
 		currOriginalObj := originalObj
 
 		// if we're editing a list, then navigate the list to find the item that we're currently trying to edit
@@ -491,7 +478,7 @@ func visitToPatch(originalObj runtime.Object, updates *resource.Info,
 
 		preconditions := []strategicpatch.PreconditionFunc{strategicpatch.RequireKeyUnchanged("apiVersion"),
 			strategicpatch.RequireKeyUnchanged("kind"), strategicpatch.RequireMetadataKeyUnchanged("name")}
-		patch, err := strategicpatch.CreateTwoWayMergePatch(originalJS, editedJS, currOriginalObj, smPatchVersion, preconditions...)
+		patch, err := strategicpatch.CreateTwoWayMergePatch(originalJS, editedJS, currOriginalObj, preconditions...)
 		if err != nil {
 			glog.V(4).Infof("Unable to calculate diff, no merge is possible: %v", err)
 			if strategicpatch.IsPreconditionFailed(err) {

pkg/kubectl/cmd/label.go

@@ -192,14 +192,6 @@ func (o *LabelOptions) RunLabel(f cmdutil.Factory, cmd *cobra.Command) error {
 		return err
 	}
 
-	smPatchVersion := strategicpatch.SMPatchVersionLatest
-	if !o.local {
-		smPatchVersion, err = cmdutil.GetServerSupportedSMPatchVersionFromFactory(f)
-		if err != nil {
-			return err
-		}
-	}
-
 	// only apply resource version locking on a single resource
 	if !one && len(o.resourceVersion) > 0 {
 		return fmt.Errorf("--resource-version may only be used with a single resource")
@@ -254,7 +246,7 @@ func (o *LabelOptions) RunLabel(f cmdutil.Factory, cmd *cobra.Command) error {
 			if !reflect.DeepEqual(oldData, newData) {
 				dataChangeMsg = "labeled"
 			}
-			patchBytes, err := strategicpatch.CreateTwoWayMergePatch(oldData, newData, obj, smPatchVersion)
+			patchBytes, err := strategicpatch.CreateTwoWayMergePatch(oldData, newData, obj)
 			createdPatch := err == nil
 			if err != nil {
 				glog.V(2).Infof("couldn't compute patch: %v", err)

pkg/kubectl/cmd/label_test.go

@@ -354,12 +354,6 @@ func TestLabelForResourceFromFile(t *testing.T) {
 			switch req.Method {
 			case "GET":
 				switch req.URL.Path {
-				case "/version":
-					resp, err := genResponseWithJsonEncodedBody(serverVersion_1_5_0)
-					if err != nil {
-						t.Fatalf("error: failed to generate server version response: %#v\n", serverVersion_1_5_0)
-					}
-					return resp, nil
 				case "/namespaces/test/replicationcontrollers/cassandra":
 					return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, &pods.Items[0])}, nil
 				default:
@@ -381,7 +375,7 @@ func TestLabelForResourceFromFile(t *testing.T) {
 		}),
 	}
 	tf.Namespace = "test"
-	tf.ClientConfig = defaultClientConfig()
+	tf.ClientConfig = &restclient.Config{ContentConfig: restclient.ContentConfig{GroupVersion: &registered.GroupOrDie(api.GroupName).GroupVersion}}
 
 	buf := bytes.NewBuffer([]byte{})
 	cmd := NewCmdLabel(f, buf)
@@ -443,12 +437,6 @@ func TestLabelMultipleObjects(t *testing.T) {
 			switch req.Method {
 			case "GET":
 				switch req.URL.Path {
-				case "/version":
-					resp, err := genResponseWithJsonEncodedBody(serverVersion_1_5_0)
-					if err != nil {
-						t.Fatalf("error: failed to generate server version response: %#v\n", serverVersion_1_5_0)
-					}
-					return resp, nil
 				case "/namespaces/test/pods":
 					return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, pods)}, nil
 				default:
@@ -472,7 +460,7 @@ func TestLabelMultipleObjects(t *testing.T) {
 		}),
 	}
 	tf.Namespace = "test"
-	tf.ClientConfig = defaultClientConfig()
+	tf.ClientConfig = &restclient.Config{ContentConfig: restclient.ContentConfig{GroupVersion: &registered.GroupOrDie(api.GroupName).GroupVersion}}
 
 	buf := bytes.NewBuffer([]byte{})
 	cmd := NewCmdLabel(f, buf)

pkg/kubectl/cmd/patch.go

@@ -154,14 +154,6 @@ func RunPatch(f cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []strin
 		return err
 	}
 
-	smPatchVersion := strategicpatch.SMPatchVersionLatest
-	if !options.Local {
-		smPatchVersion, err = cmdutil.GetServerSupportedSMPatchVersionFromFactory(f)
-		if err != nil {
-			return err
-		}
-	}
-
 	count := 0
 	err = r.Visit(func(info *resource.Info, err error) error {
 		if err != nil {
@@ -185,7 +177,7 @@ func RunPatch(f cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []strin
 				// don't bother checking for failures of this replace, because a failure to indicate the hint doesn't fail the command
 				// also, don't force the replacement.  If the replacement fails on a resourceVersion conflict, then it means this
 				// record hint is likely to be invalid anyway, so avoid the bad hint
-				patch, err := cmdutil.ChangeResourcePatch(info, f.Command(), smPatchVersion)
+				patch, err := cmdutil.ChangeResourcePatch(info, f.Command())
 				if err == nil {
 					helper.Patch(info.Namespace, info.Name, api.StrategicMergePatchType, patch)
 				}

pkg/kubectl/cmd/patch_test.go

@@ -34,12 +34,6 @@ func TestPatchObject(t *testing.T) {
 		NegotiatedSerializer: ns,
 		Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
 			switch p, m := req.URL.Path, req.Method; {
-			case p == "/version" && m == "GET":
-				resp, err := genResponseWithJsonEncodedBody(serverVersion_1_5_0)
-				if err != nil {
-					t.Fatalf("error: failed to generate server version response: %#v\n", serverVersion_1_5_0)
-				}
-				return resp, nil
 			case p == "/namespaces/test/services/frontend" && (m == "PATCH" || m == "GET"):
 				return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, &svc.Items[0])}, nil
 			default:
@@ -49,7 +43,6 @@ func TestPatchObject(t *testing.T) {
 		}),
 	}
 	tf.Namespace = "test"
-	tf.ClientConfig = defaultClientConfig()
 	buf := bytes.NewBuffer([]byte{})
 
 	cmd := NewCmdPatch(f, buf)
@@ -73,12 +66,6 @@ func TestPatchObjectFromFile(t *testing.T) {
 		NegotiatedSerializer: ns,
 		Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
 			switch p, m := req.URL.Path, req.Method; {
-			case p == "/version" && m == "GET":
-				resp, err := genResponseWithJsonEncodedBody(serverVersion_1_5_0)
-				if err != nil {
-					t.Fatalf("error: failed to generate server version response: %#v\n", serverVersion_1_5_0)
-				}
-				return resp, nil
 			case p == "/namespaces/test/services/frontend" && (m == "PATCH" || m == "GET"):
 				return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, &svc.Items[0])}, nil
 			default:
@@ -88,7 +75,6 @@ func TestPatchObjectFromFile(t *testing.T) {
 		}),
 	}
 	tf.Namespace = "test"
-	tf.ClientConfig = defaultClientConfig()
 	buf := bytes.NewBuffer([]byte{})
 
 	cmd := NewCmdPatch(f, buf)

pkg/kubectl/cmd/rollout/rollout_pause.go

@@ -38,7 +38,6 @@ import (
 type PauseConfig struct {
 	resource.FilenameOptions
 
-	f       cmdutil.Factory
 	Pauser  func(info *resource.Info) (bool, error)
 	Mapper  meta.RESTMapper
 	Typer   runtime.ObjectTyper
@@ -100,7 +99,6 @@ func (o *PauseConfig) CompletePause(f cmdutil.Factory, cmd *cobra.Command, out i
 		return cmdutil.UsageError(cmd, cmd.Use)
 	}
 
-	o.f = f
 	o.Mapper, o.Typer = f.Object()
 	o.Encoder = f.JSONEncoder()
 
@@ -134,7 +132,7 @@ func (o *PauseConfig) CompletePause(f cmdutil.Factory, cmd *cobra.Command, out i
 
 func (o PauseConfig) RunPause() error {
 	allErrs := []error{}
-	for _, patch := range set.CalculatePatches(o.f, o.Infos, o.Encoder, false, o.Pauser) {
+	for _, patch := range set.CalculatePatches(o.Infos, o.Encoder, o.Pauser) {
 		info := patch.Info
 		if patch.Err != nil {
 			allErrs = append(allErrs, fmt.Errorf("error: %s %q %v", info.Mapping.Resource, info.Name, patch.Err))

pkg/kubectl/cmd/rollout/rollout_resume.go

@@ -38,7 +38,6 @@ import (
 type ResumeConfig struct {
 	resource.FilenameOptions
 
-	f       cmdutil.Factory
 	Resumer func(object *resource.Info) (bool, error)
 	Mapper  meta.RESTMapper
 	Typer   runtime.ObjectTyper
@@ -98,7 +97,6 @@ func (o *ResumeConfig) CompleteResume(f cmdutil.Factory, cmd *cobra.Command, out
 		return cmdutil.UsageError(cmd, cmd.Use)
 	}
 
-	o.f = f
 	o.Mapper, o.Typer = f.Object()
 	o.Encoder = f.JSONEncoder()
 
@@ -138,7 +136,7 @@ func (o *ResumeConfig) CompleteResume(f cmdutil.Factory, cmd *cobra.Command, out
 
 func (o ResumeConfig) RunResume() error {
 	allErrs := []error{}
-	for _, patch := range set.CalculatePatches(o.f, o.Infos, o.Encoder, false, o.Resumer) {
+	for _, patch := range set.CalculatePatches(o.Infos, o.Encoder, o.Resumer) {
 		info := patch.Info
 
 		if patch.Err != nil {

pkg/kubectl/cmd/scale.go

@@ -139,11 +139,6 @@ func RunScale(f cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []strin
 		return fmt.Errorf("cannot use --resource-version with multiple resources")
 	}
 
-	smPatchVersion, err := cmdutil.GetServerSupportedSMPatchVersionFromFactory(f)
-	if err != nil {
-		return err
-	}
-
 	counter := 0
 	err = r.Visit(func(info *resource.Info, err error) error {
 		if err != nil {
@@ -169,7 +164,7 @@ func RunScale(f cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []strin
 			return err
 		}
 		if cmdutil.ShouldRecord(cmd, info) {
-			patchBytes, err := cmdutil.ChangeResourcePatch(info, f.Command(), smPatchVersion)
+			patchBytes, err := cmdutil.ChangeResourcePatch(info, f.Command())
 			if err != nil {
 				return err
 			}

pkg/kubectl/cmd/set/helper.go

@@ -23,7 +23,7 @@ import (
 
 	"k8s.io/kubernetes/pkg/api"
 	"k8s.io/kubernetes/pkg/api/errors"
-	cmdutil "k8s.io/kubernetes/pkg/kubectl/cmd/util"
+	kcmdutil "k8s.io/kubernetes/pkg/kubectl/cmd/util"
 	"k8s.io/kubernetes/pkg/kubectl/resource"
 	"k8s.io/kubernetes/pkg/runtime"
 	"k8s.io/kubernetes/pkg/util/strategicpatch"
@@ -61,7 +61,7 @@ func handlePodUpdateError(out io.Writer, err error, resource string) {
 				return
 			}
 		} else {
-			if ok := cmdutil.PrintErrorWithCauses(err, out); ok {
+			if ok := kcmdutil.PrintErrorWithCauses(err, out); ok {
 				return
 			}
 		}
@@ -120,20 +120,8 @@ type Patch struct {
 // CalculatePatches calls the mutation function on each provided info object, and generates a strategic merge patch for
 // the changes in the object. Encoder must be able to encode the info into the appropriate destination type. If mutateFn
 // returns false, the object is not included in the final list of patches.
-// If local is true, it will be default to use SMPatchVersionLatest to calculate a patch without contacting the server to
+func CalculatePatches(infos []*resource.Info, encoder runtime.Encoder, mutateFn func(*resource.Info) (bool, error)) []*Patch {
-// get the server supported SMPatchVersion. If you are using a patch's Patch field generated in local mode, be careful.
-// If local is false, it will talk to the server to check which StategicMergePatchVersion to use.
-func CalculatePatches(f cmdutil.Factory, infos []*resource.Info, encoder runtime.Encoder, local bool, mutateFn func(*resource.Info) (bool, error)) []*Patch {
 	var patches []*Patch
-	smPatchVersion := strategicpatch.SMPatchVersionLatest
-	var err error
-	if !local {
-		smPatchVersion, err = cmdutil.GetServerSupportedSMPatchVersionFromFactory(f)
-		if err != nil {
-			return patches
-		}
-	}
-
 	for _, info := range infos {
 		patch := &Patch{Info: info}
 		patch.Before, patch.Err = runtime.Encode(encoder, info.Object)
@@ -168,7 +156,7 @@ func CalculatePatches(f cmdutil.Factory, infos []*resource.Info, encoder runtime
 			continue
 		}
 
-		patch.Patch, patch.Err = strategicpatch.CreateTwoWayMergePatch(patch.Before, patch.After, versioned, smPatchVersion)
+		patch.Patch, patch.Err = strategicpatch.CreateTwoWayMergePatch(patch.Before, patch.After, versioned)
 	}
 	return patches
 }

pkg/kubectl/cmd/set/set_image.go

@@ -28,7 +28,6 @@ import (
 	"k8s.io/kubernetes/pkg/kubectl/resource"
 	"k8s.io/kubernetes/pkg/runtime"
 	utilerrors "k8s.io/kubernetes/pkg/util/errors"
-	"k8s.io/kubernetes/pkg/util/strategicpatch"
 )
 
 // ImageOptions is the start of the data required to perform the operation.  As new fields are added, add them here instead of
@@ -36,7 +35,6 @@ import (
 type ImageOptions struct {
 	resource.FilenameOptions
 
-	f           cmdutil.Factory
 	Mapper      meta.RESTMapper
 	Typer       runtime.ObjectTyper
 	Infos       []*resource.Info
@@ -110,7 +108,6 @@ func NewCmdImage(f cmdutil.Factory, out, err io.Writer) *cobra.Command {
 }
 
 func (o *ImageOptions) Complete(f cmdutil.Factory, cmd *cobra.Command, args []string) error {
-	o.f = f
 	o.Mapper, o.Typer = f.Object()
 	o.UpdatePodSpecForObject = f.UpdatePodSpecForObject
 	o.Encoder = f.JSONEncoder()
@@ -165,7 +162,7 @@ func (o *ImageOptions) Validate() error {
 func (o *ImageOptions) Run() error {
 	allErrs := []error{}
 
-	patches := CalculatePatches(o.f, o.Infos, o.Encoder, o.Local, func(info *resource.Info) (bool, error) {
+	patches := CalculatePatches(o.Infos, o.Encoder, func(info *resource.Info) (bool, error) {
 		transformed := false
 		_, err := o.UpdatePodSpecForObject(info.Object, func(spec *api.PodSpec) error {
 			for name, image := range o.ContainerImages {
@@ -189,14 +186,6 @@ func (o *ImageOptions) Run() error {
 		return transformed, err
 	})
 
-	smPatchVersion := strategicpatch.SMPatchVersionLatest
-	var err error
-	if !o.Local {
-		smPatchVersion, err = cmdutil.GetServerSupportedSMPatchVersionFromFactory(o.f)
-		if err != nil {
-			return err
-		}
-	}
 	for _, patch := range patches {
 		info := patch.Info
 		if patch.Err != nil {
@@ -223,7 +212,7 @@ func (o *ImageOptions) Run() error {
 
 		// record this change (for rollout history)
 		if o.Record || cmdutil.ContainsChangeCause(info) {
-			if patch, err := cmdutil.ChangeResourcePatch(info, o.ChangeCause, smPatchVersion); err == nil {
+			if patch, err := cmdutil.ChangeResourcePatch(info, o.ChangeCause); err == nil {
 				if obj, err = resource.NewHelper(info.Client, info.Mapping).Patch(info.Namespace, info.Name, api.StrategicMergePatchType, patch); err != nil {
 					fmt.Fprintf(o.Err, "WARNING: changes to %s/%s can't be recorded: %v\n", info.Mapping.Resource, info.Name, err)
 				}

pkg/kubectl/cmd/set/set_resources.go

@@ -60,7 +60,6 @@ var (
 type ResourcesOptions struct {
 	resource.FilenameOptions
 
-	f                 cmdutil.Factory
 	Mapper            meta.RESTMapper
 	Typer             runtime.ObjectTyper
 	Infos             []*resource.Info
@@ -125,7 +124,6 @@ func NewCmdResources(f cmdutil.Factory, out io.Writer, errOut io.Writer) *cobra.
 }
 
 func (o *ResourcesOptions) Complete(f cmdutil.Factory, cmd *cobra.Command, args []string) error {
-	o.f = f
 	o.Mapper, o.Typer = f.Object()
 	o.UpdatePodSpecForObject = f.UpdatePodSpecForObject
 	o.Encoder = f.JSONEncoder()
@@ -176,7 +174,7 @@ func (o *ResourcesOptions) Validate() error {
 
 func (o *ResourcesOptions) Run() error {
 	allErrs := []error{}
-	patches := CalculatePatches(o.f, o.Infos, o.Encoder, cmdutil.GetDryRunFlag(o.Cmd), func(info *resource.Info) (bool, error) {
+	patches := CalculatePatches(o.Infos, o.Encoder, func(info *resource.Info) (bool, error) {
 		transformed := false
 		_, err := o.UpdatePodSpecForObject(info.Object, func(spec *api.PodSpec) error {
 			containers, _ := selectContainers(spec.Containers, o.ContainerSelector)

pkg/kubectl/cmd/taint.go

@@ -321,11 +321,6 @@ func (o TaintOptions) RunTaint() error {
 		return err
 	}
 
-	smPatchVersion, err := cmdutil.GetServerSupportedSMPatchVersionFromFactory(o.f)
-	if err != nil {
-		return err
-	}
-
 	return r.Visit(func(info *resource.Info, err error) error {
 		if err != nil {
 			return err
@@ -348,7 +343,7 @@ func (o TaintOptions) RunTaint() error {
 		if err != nil {
 			return err
 		}
-		patchBytes, err := strategicpatch.CreateTwoWayMergePatch(oldData, newData, obj, smPatchVersion)
+		patchBytes, err := strategicpatch.CreateTwoWayMergePatch(oldData, newData, obj)
 		createdPatch := err == nil
 		if err != nil {
 			glog.V(2).Infof("couldn't compute patch: %v", err)

pkg/kubectl/cmd/taint_test.go

@@ -252,6 +252,7 @@ func TestTaint(t *testing.T) {
 
 	for _, test := range tests {
 		oldNode, expectNewNode := generateNodeAndTaintedNode(test.oldTaints, test.newTaints)
+
 		new_node := &api.Node{}
 		tainted := false
 		f, tf, codec, ns := cmdtesting.NewAPIFactory()
@@ -261,12 +262,6 @@ func TestTaint(t *testing.T) {
 			Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
 				m := &MyReq{req}
 				switch {
-				case m.isFor("GET", "/version"):
-					resp, err := genResponseWithJsonEncodedBody(serverVersion_1_5_0)
-					if err != nil {
-						t.Fatalf("error: failed to generate server version response: %#v\n", serverVersion_1_5_0)
-					}
-					return resp, nil
 				case m.isFor("GET", "/nodes/node-name"):
 					return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: objBody(codec, oldNode)}, nil
 				case m.isFor("PATCH", "/nodes/node-name"), m.isFor("PUT", "/nodes/node-name"):

pkg/kubectl/cmd/util/helpers.go

@@ -521,7 +521,7 @@ func RecordChangeCause(obj runtime.Object, changeCause string) error {
 
 // ChangeResourcePatch creates a strategic merge patch between the origin input resource info
 // and the annotated with change-cause input resource info.
-func ChangeResourcePatch(info *resource.Info, changeCause string, smPatchVersion strategicpatch.StrategicMergePatchVersion) ([]byte, error) {
+func ChangeResourcePatch(info *resource.Info, changeCause string) ([]byte, error) {
 	oldData, err := json.Marshal(info.Object)
 	if err != nil {
 		return nil, err
@@ -533,7 +533,7 @@ func ChangeResourcePatch(info *resource.Info, changeCause string, smPatchVersion
 	if err != nil {
 		return nil, err
 	}
-	return strategicpatch.CreateTwoWayMergePatch(oldData, newData, info.Object, smPatchVersion)
+	return strategicpatch.CreateTwoWayMergePatch(oldData, newData, info.Object)
 }
 
 // containsChangeCause checks if input resource info contains change-cause annotation.
@@ -725,13 +725,3 @@ func RequireNoArguments(c *cobra.Command, args []string) {
 		CheckErr(UsageError(c, fmt.Sprintf(`unknown command %q`, strings.Join(args, " "))))
 	}
 }
-
-// GetServerSupportedSMPatchVersionFromFactory is a wrapper of GetServerSupportedSMPatchVersion(),
-// It takes a Factory, returns the max version the server supports.
-func GetServerSupportedSMPatchVersionFromFactory(f Factory) (strategicpatch.StrategicMergePatchVersion, error) {
-	clientSet, err := f.ClientSet()
-	if err != nil {
-		return strategicpatch.Unknown, err
-	}
-	return strategicpatch.GetServerSupportedSMPatchVersion(clientSet.Discovery())
-}

pkg/util/strategicpatch/BUILD

@@ -15,7 +15,6 @@ go_library(
     srcs = ["patch.go"],
     tags = ["automanaged"],
     deps = [
-        "//pkg/client/typed/discovery:go_default_library",
         "//pkg/util/json:go_default_library",
         "//third_party/forked/golang/json:go_default_library",
         "//vendor:github.com/davecgh/go-spew/spew",

pkg/util/strategicpatch/patch.go

@@ -21,7 +21,6 @@ import (
 	"reflect"
 	"sort"
 
-	"k8s.io/kubernetes/pkg/client/typed/discovery"
 	"k8s.io/kubernetes/pkg/util/json"
 	forkedjson "k8s.io/kubernetes/third_party/forked/golang/json"
 
@@ -39,20 +38,11 @@ import (
 // Some of the content of this package was borrowed with minor adaptations from
 // evanphx/json-patch and openshift/origin.
 
-type StrategicMergePatchVersion string
-
 const (
-	directiveMarker              = "$patch"
+	directiveMarker  = "$patch"
-	deleteDirective              = "delete"
+	deleteDirective  = "delete"
-	replaceDirective             = "replace"
+	replaceDirective = "replace"
-	mergeDirective               = "merge"
+	mergeDirective   = "merge"
-	mergePrimitivesListDirective = "mergeprimitiveslist"
-
-	// different versions of StrategicMergePatch
-	SMPatchVersion_1_0   StrategicMergePatchVersion = "v1.0.0"
-	SMPatchVersion_1_5   StrategicMergePatchVersion = "v1.5.0"
-	Unknown              StrategicMergePatchVersion = "Unknown"
-	SMPatchVersionLatest                            = SMPatchVersion_1_5
 )
 
 // IsPreconditionFailed returns true if the provided error indicates
@@ -97,7 +87,6 @@ func IsConflict(err error) bool {
 
 var errBadJSONDoc = fmt.Errorf("Invalid JSON document")
 var errNoListOfLists = fmt.Errorf("Lists of lists are not supported")
-var errNoElementsInSlice = fmt.Errorf("no elements in any of the given slices")
 
 // The following code is adapted from github.com/openshift/origin/pkg/util/jsonmerge.
 // Instead of defining a Delta that holds an original, a patch and a set of preconditions,
@@ -144,15 +133,15 @@ func RequireMetadataKeyUnchanged(key string) PreconditionFunc {
 }
 
 // Deprecated: Use the synonym CreateTwoWayMergePatch, instead.
-func CreateStrategicMergePatch(original, modified []byte, dataStruct interface{}, smPatchVersion StrategicMergePatchVersion) ([]byte, error) {
+func CreateStrategicMergePatch(original, modified []byte, dataStruct interface{}) ([]byte, error) {
-	return CreateTwoWayMergePatch(original, modified, dataStruct, smPatchVersion)
+	return CreateTwoWayMergePatch(original, modified, dataStruct)
 }
 
 // CreateTwoWayMergePatch creates a patch that can be passed to StrategicMergePatch from an original
 // document and a modified document, which are passed to the method as json encoded content. It will
 // return a patch that yields the modified document when applied to the original document, or an error
 // if either of the two documents is invalid.
-func CreateTwoWayMergePatch(original, modified []byte, dataStruct interface{}, smPatchVersion StrategicMergePatchVersion, fns ...PreconditionFunc) ([]byte, error) {
+func CreateTwoWayMergePatch(original, modified []byte, dataStruct interface{}, fns ...PreconditionFunc) ([]byte, error) {
 	originalMap := map[string]interface{}{}
 	if len(original) > 0 {
 		if err := json.Unmarshal(original, &originalMap); err != nil {
@@ -172,7 +161,7 @@ func CreateTwoWayMergePatch(original, modified []byte, dataStruct interface{}, s
 		return nil, err
 	}
 
-	patchMap, err := diffMaps(originalMap, modifiedMap, t, false, false, smPatchVersion)
+	patchMap, err := diffMaps(originalMap, modifiedMap, t, false, false)
 	if err != nil {
 		return nil, err
 	}
@@ -188,7 +177,7 @@ func CreateTwoWayMergePatch(original, modified []byte, dataStruct interface{}, s
 }
 
 // Returns a (recursive) strategic merge patch that yields modified when applied to original.
-func diffMaps(original, modified map[string]interface{}, t reflect.Type, ignoreChangesAndAdditions, ignoreDeletions bool, smPatchVersion StrategicMergePatchVersion) (map[string]interface{}, error) {
+func diffMaps(original, modified map[string]interface{}, t reflect.Type, ignoreChangesAndAdditions, ignoreDeletions bool) (map[string]interface{}, error) {
 	patch := map[string]interface{}{}
 	if t.Kind() == reflect.Ptr {
 		t = t.Elem()
@@ -241,7 +230,7 @@ func diffMaps(original, modified map[string]interface{}, t reflect.Type, ignoreC
 				return nil, err
 			}
 
-			patchValue, err := diffMaps(originalValueTyped, modifiedValueTyped, fieldType, ignoreChangesAndAdditions, ignoreDeletions, smPatchVersion)
+			patchValue, err := diffMaps(originalValueTyped, modifiedValueTyped, fieldType, ignoreChangesAndAdditions, ignoreDeletions)
 			if err != nil {
 				return nil, err
 			}
@@ -259,25 +248,13 @@ func diffMaps(original, modified map[string]interface{}, t reflect.Type, ignoreC
 			}
 
 			if fieldPatchStrategy == mergeDirective {
-				patchValue, err := diffLists(originalValueTyped, modifiedValueTyped, fieldType.Elem(), fieldPatchMergeKey, ignoreChangesAndAdditions, ignoreDeletions, smPatchVersion)
+				patchValue, err := diffLists(originalValueTyped, modifiedValueTyped, fieldType.Elem(), fieldPatchMergeKey, ignoreChangesAndAdditions, ignoreDeletions)
 				if err != nil {
 					return nil, err
 				}
-				if patchValue == nil {
-					continue
-				}
 
-				switch typedPatchValue := patchValue.(type) {
+				if len(patchValue) > 0 {
-				case []interface{}:
+					patch[key] = patchValue
-					if len(typedPatchValue) > 0 {
-						patch[key] = typedPatchValue
-					}
-				case map[string]interface{}:
-					if len(typedPatchValue) > 0 {
-						patch[key] = typedPatchValue
-					}
-				default:
-					return nil, fmt.Errorf("invalid type of patch: %v", reflect.TypeOf(patchValue))
 				}
 
 				continue
@@ -307,7 +284,7 @@ func diffMaps(original, modified map[string]interface{}, t reflect.Type, ignoreC
 
 // Returns a (recursive) strategic merge patch that yields modified when applied to original,
 // for a pair of lists with merge semantics.
-func diffLists(original, modified []interface{}, t reflect.Type, mergeKey string, ignoreChangesAndAdditions, ignoreDeletions bool, smPatchVersion StrategicMergePatchVersion) (interface{}, error) {
+func diffLists(original, modified []interface{}, t reflect.Type, mergeKey string, ignoreChangesAndAdditions, ignoreDeletions bool) ([]interface{}, error) {
 	if len(original) == 0 {
 		if len(modified) == 0 || ignoreChangesAndAdditions {
 			return nil, nil
@@ -321,14 +298,12 @@ func diffLists(original, modified []interface{}, t reflect.Type, mergeKey string
 		return nil, err
 	}
 
-	var patch interface{}
+	var patch []interface{}
 
 	if elementType.Kind() == reflect.Map {
-		patch, err = diffListsOfMaps(original, modified, t, mergeKey, ignoreChangesAndAdditions, ignoreDeletions, smPatchVersion)
+		patch, err = diffListsOfMaps(original, modified, t, mergeKey, ignoreChangesAndAdditions, ignoreDeletions)
-	} else if elementType.Kind() == reflect.Slice {
+	} else if !ignoreChangesAndAdditions {
-		err = errNoListOfLists
+		patch, err = diffListsOfScalars(original, modified)
-	} else {
-		patch, err = diffListsOfScalars(original, modified, ignoreChangesAndAdditions, ignoreDeletions, smPatchVersion)
 	}
 
 	if err != nil {
@@ -340,23 +315,8 @@ func diffLists(original, modified []interface{}, t reflect.Type, mergeKey string
 
 // Returns a (recursive) strategic merge patch that yields modified when applied to original,
 // for a pair of lists of scalars with merge semantics.
-func diffListsOfScalars(original, modified []interface{}, ignoreChangesAndAdditions, ignoreDeletions bool, smPatchVersion StrategicMergePatchVersion) (interface{}, error) {
+func diffListsOfScalars(original, modified []interface{}) ([]interface{}, error) {
-	originalScalars := uniqifyAndSortScalars(original)
+	if len(modified) == 0 {
-	modifiedScalars := uniqifyAndSortScalars(modified)
-
-	switch smPatchVersion {
-	case SMPatchVersion_1_5:
-		return diffListsOfScalarsIntoMap(originalScalars, modifiedScalars, ignoreChangesAndAdditions, ignoreDeletions)
-	case SMPatchVersion_1_0:
-		return diffListsOfScalarsIntoSlice(originalScalars, modifiedScalars, ignoreChangesAndAdditions, ignoreDeletions)
-	default:
-		return nil, fmt.Errorf("Unknown StrategicMergePatchVersion: %v", smPatchVersion)
-	}
-}
-
-func diffListsOfScalarsIntoSlice(originalScalars, modifiedScalars []interface{}, ignoreChangesAndAdditions, ignoreDeletions bool) ([]interface{}, error) {
-	originalIndex, modifiedIndex := 0, 0
-	if len(modifiedScalars) == 0 {
 		// There is no need to check the length of original because there is no way to create
 		// a patch that deletes a scalar from a list of scalars with merge semantics.
 		return nil, nil
@@ -364,14 +324,18 @@ func diffListsOfScalarsIntoSlice(originalScalars, modifiedScalars []interface{},
 
 	patch := []interface{}{}
 
+	originalScalars := uniqifyAndSortScalars(original)
+	modifiedScalars := uniqifyAndSortScalars(modified)
+	originalIndex, modifiedIndex := 0, 0
+
 loopB:
 	for ; modifiedIndex < len(modifiedScalars); modifiedIndex++ {
 		for ; originalIndex < len(originalScalars); originalIndex++ {
-			originalString := fmt.Sprintf("%v", originalScalars[originalIndex])
+			originalString := fmt.Sprintf("%v", original[originalIndex])
-			modifiedString := fmt.Sprintf("%v", modifiedScalars[modifiedIndex])
+			modifiedString := fmt.Sprintf("%v", modified[modifiedIndex])
 			if originalString >= modifiedString {
 				if originalString != modifiedString {
-					patch = append(patch, modifiedScalars[modifiedIndex])
+					patch = append(patch, modified[modifiedIndex])
 				}
 
 				continue loopB
@@ -385,57 +349,7 @@ loopB:
 
 	// Add any remaining items found only in modified
 	for ; modifiedIndex < len(modifiedScalars); modifiedIndex++ {
-		patch = append(patch, modifiedScalars[modifiedIndex])
+		patch = append(patch, modified[modifiedIndex])
-	}
-
-	return patch, nil
-}
-
-func diffListsOfScalarsIntoMap(originalScalars, modifiedScalars []interface{}, ignoreChangesAndAdditions, ignoreDeletions bool) (map[string]interface{}, error) {
-	originalIndex, modifiedIndex := 0, 0
-	patch := map[string]interface{}{}
-	patch[directiveMarker] = mergePrimitivesListDirective
-
-	for originalIndex < len(originalScalars) && modifiedIndex < len(modifiedScalars) {
-		originalString := fmt.Sprintf("%v", originalScalars[originalIndex])
-		modifiedString := fmt.Sprintf("%v", modifiedScalars[modifiedIndex])
-
-		// objects are identical
-		if originalString == modifiedString {
-			originalIndex++
-			modifiedIndex++
-			continue
-		}
-
-		if originalString > modifiedString {
-			if !ignoreChangesAndAdditions {
-				modifiedValue := modifiedScalars[modifiedIndex]
-				patch[modifiedString] = modifiedValue
-			}
-			modifiedIndex++
-		} else {
-			if !ignoreDeletions {
-				patch[originalString] = nil
-			}
-			originalIndex++
-		}
-	}
-
-	// Delete any remaining items found only in original
-	if !ignoreDeletions {
-		for ; originalIndex < len(originalScalars); originalIndex++ {
-			originalString := fmt.Sprintf("%v", originalScalars[originalIndex])
-			patch[originalString] = nil
-		}
-	}
-
-	// Add any remaining items found only in modified
-	if !ignoreChangesAndAdditions {
-		for ; modifiedIndex < len(modifiedScalars); modifiedIndex++ {
-			modifiedString := fmt.Sprintf("%v", modifiedScalars[modifiedIndex])
-			modifiedValue := modifiedScalars[modifiedIndex]
-			patch[modifiedString] = modifiedValue
-		}
 	}
 
 	return patch, nil
@@ -446,7 +360,7 @@ var errBadArgTypeFmt = "expected a %s, but received a %s"
 
 // Returns a (recursive) strategic merge patch that yields modified when applied to original,
 // for a pair of lists of maps with merge semantics.
-func diffListsOfMaps(original, modified []interface{}, t reflect.Type, mergeKey string, ignoreChangesAndAdditions, ignoreDeletions bool, smPatchVersion StrategicMergePatchVersion) ([]interface{}, error) {
+func diffListsOfMaps(original, modified []interface{}, t reflect.Type, mergeKey string, ignoreChangesAndAdditions, ignoreDeletions bool) ([]interface{}, error) {
 	patch := make([]interface{}, 0)
 
 	originalSorted, err := sortMergeListsByNameArray(original, t, mergeKey, false)
@@ -492,7 +406,7 @@ loopB:
 			if originalString >= modifiedString {
 				if originalString == modifiedString {
 					// Merge key values are equal, so recurse
-					patchValue, err := diffMaps(originalMap, modifiedMap, t, ignoreChangesAndAdditions, ignoreDeletions, smPatchVersion)
+					patchValue, err := diffMaps(originalMap, modifiedMap, t, ignoreChangesAndAdditions, ignoreDeletions)
 					if err != nil {
 						return nil, err
 					}
@@ -628,15 +542,7 @@ func mergeMap(original, patch map[string]interface{}, t reflect.Type) (map[strin
 			return map[string]interface{}{}, nil
 		}
 
-		if v == mergePrimitivesListDirective {
+		return nil, fmt.Errorf(errBadPatchTypeFmt, v, patch)
-			// delete the directiveMarker's key-value pair to avoid delta map and delete map
-			// overlaping with each other when calculating a ThreeWayDiff for list of Primitives.
-			// Otherwise, the overlaping will cause it calling LookupPatchMetadata() which will
-			// return an error since the metadata shows it's a slice but it is actually a map.
-			delete(original, directiveMarker)
-		} else {
-			return nil, fmt.Errorf(errBadPatchTypeFmt, v, patch)
-		}
 	}
 
 	// nil is an accepted value for original to simplify logic in other places.
@@ -672,9 +578,7 @@ func mergeMap(original, patch map[string]interface{}, t reflect.Type) (map[strin
 		// If they're both maps or lists, recurse into the value.
 		originalType := reflect.TypeOf(original[k])
 		patchType := reflect.TypeOf(patchV)
-		// check if we are trying to merge a slice with a map for list of primitives
+		if originalType == patchType {
-		isMergeSliceOfPrimitivesWithAPatchMap := originalType != nil && patchType != nil && originalType.Kind() == reflect.Slice && patchType.Kind() == reflect.Map
-		if originalType == patchType || isMergeSliceOfPrimitivesWithAPatchMap {
 			// First find the fieldPatchStrategy and fieldPatchMergeKey.
 			fieldType, fieldPatchStrategy, fieldPatchMergeKey, err := forkedjson.LookupPatchMetadata(t, k)
 			if err != nil {
@@ -696,8 +600,9 @@ func mergeMap(original, patch map[string]interface{}, t reflect.Type) (map[strin
 			if originalType.Kind() == reflect.Slice && fieldPatchStrategy == mergeDirective {
 				elemType := fieldType.Elem()
 				typedOriginal := original[k].([]interface{})
+				typedPatch := patchV.([]interface{})
 				var err error
-				original[k], err = mergeSlice(typedOriginal, patchV, elemType, fieldPatchMergeKey)
+				original[k], err = mergeSlice(typedOriginal, typedPatch, elemType, fieldPatchMergeKey)
 				if err != nil {
 					return nil, err
 				}
@@ -718,34 +623,13 @@ func mergeMap(original, patch map[string]interface{}, t reflect.Type) (map[strin
 // Merge two slices together. Note: This may modify both the original slice and
 // the patch because getting a deep copy of a slice in golang is highly
 // non-trivial.
-// The patch could be a map[string]interface{} representing a slice of primitives.
+func mergeSlice(original, patch []interface{}, elemType reflect.Type, mergeKey string) ([]interface{}, error) {
-// If the patch map doesn't has the specific directiveMarker (mergePrimitivesListDirective),
+	if len(original) == 0 && len(patch) == 0 {
-// it returns an error. Please check patch_test.go and find the test case named
-// "merge lists of scalars for list of primitives" to see what the patch looks like.
-// Patch is still []interface{} for all the other types.
-func mergeSlice(original []interface{}, patch interface{}, elemType reflect.Type, mergeKey string) ([]interface{}, error) {
-	t, err := sliceElementType(original)
-	if err != nil && err != errNoElementsInSlice {
-		return nil, err
-	}
-
-	if patchMap, ok := patch.(map[string]interface{}); ok {
-		// We try to merge the original slice with a patch map only when the map has
-		// a specific directiveMarker. Otherwise, this patch will be treated as invalid.
-		if directiveValue, ok := patchMap[directiveMarker]; ok && directiveValue == mergePrimitivesListDirective {
-			return mergeSliceOfScalarsWithPatchMap(original, patchMap)
-		} else {
-			return nil, fmt.Errorf("Unable to merge a slice with an invalid map")
-		}
-	}
-
-	typedPatch := patch.([]interface{})
-	if len(original) == 0 && len(typedPatch) == 0 {
 		return original, nil
 	}
 
 	// All the values must be of the same type, but not a list.
-	t, err = sliceElementType(original, typedPatch)
+	t, err := sliceElementType(original, patch)
 	if err != nil {
 		return nil, err
 	}
@@ -754,7 +638,7 @@ func mergeSlice(original []interface{}, patch interface{}, elemType reflect.Type
 	if t.Kind() != reflect.Map {
 		// Maybe in the future add a "concat" mode that doesn't
 		// uniqify.
-		both := append(original, typedPatch...)
+		both := append(original, patch...)
 		return uniqifyScalars(both), nil
 	}
 
@@ -765,7 +649,7 @@ func mergeSlice(original []interface{}, patch interface{}, elemType reflect.Type
 	// First look for any special $patch elements.
 	patchWithoutSpecialElements := []interface{}{}
 	replace := false
-	for _, v := range typedPatch {
+	for _, v := range patch {
 		typedV := v.(map[string]interface{})
 		patchType, ok := typedV[directiveMarker]
 		if ok {
@@ -801,10 +685,10 @@ func mergeSlice(original []interface{}, patch interface{}, elemType reflect.Type
 		return patchWithoutSpecialElements, nil
 	}
 
-	typedPatch = patchWithoutSpecialElements
+	patch = patchWithoutSpecialElements
 
 	// Merge patch into original.
-	for _, v := range typedPatch {
+	for _, v := range patch {
 		// Because earlier we confirmed that all the elements are maps.
 		typedV := v.(map[string]interface{})
 		mergeValue, ok := typedV[mergeKey]
@@ -837,36 +721,6 @@ func mergeSlice(original []interface{}, patch interface{}, elemType reflect.Type
 	return original, nil
 }
 
-// mergeSliceOfScalarsWithPatchMap merges the original slice with a patch map and
-// returns an uniqified and sorted slice of primitives.
-// The patch map must have the specific directiveMarker (mergePrimitivesListDirective).
-func mergeSliceOfScalarsWithPatchMap(original []interface{}, patch map[string]interface{}) ([]interface{}, error) {
-	// make sure the patch has the specific directiveMarker ()
-	if directiveValue, ok := patch[directiveMarker]; ok && directiveValue != mergePrimitivesListDirective {
-		return nil, fmt.Errorf("Unable to merge a slice with an invalid map")
-	}
-	delete(patch, directiveMarker)
-	output := make([]interface{}, 0, len(original)+len(patch))
-	for _, value := range original {
-		valueString := fmt.Sprintf("%v", value)
-		if v, ok := patch[valueString]; ok {
-			if v != nil {
-				output = append(output, v)
-			}
-			delete(patch, valueString)
-		} else {
-			output = append(output, value)
-		}
-	}
-	for _, value := range patch {
-		if value != nil {
-			output = append(output, value)
-		}
-		// No action required to delete items that missing from the original slice.
-	}
-	return uniqifyAndSortScalars(output), nil
-}
-
 // This method no longer panics if any element of the slice is not a map.
 func findMapInSliceBasedOnKeyValue(m []interface{}, key string, value interface{}) (map[string]interface{}, int, bool, error) {
 	for k, v := range m {
@@ -1092,7 +946,7 @@ func sliceElementType(slices ...[]interface{}) (reflect.Type, error) {
 	}
 
 	if prevType == nil {
-		return nil, errNoElementsInSlice
+		return nil, fmt.Errorf("no elements in any of the given slices")
 	}
 
 	return prevType, nil
@@ -1181,10 +1035,6 @@ func mergingMapFieldsHaveConflicts(
 				if leftMarker != rightMarker {
 					return true, nil
 				}
-
-				if leftMarker == mergePrimitivesListDirective && rightMarker == mergePrimitivesListDirective {
-					return false, nil
-				}
 			}
 
 			// Check the individual keys.
@@ -1207,29 +1057,12 @@ func mergingMapFieldsHaveConflicts(
 }
 
 func mapsHaveConflicts(typedLeft, typedRight map[string]interface{}, structType reflect.Type) (bool, error) {
-	isForListOfPrimitives := false
-	if leftDirective, ok := typedLeft[directiveMarker]; ok {
-		if rightDirective, ok := typedRight[directiveMarker]; ok {
-			if leftDirective == mergePrimitivesListDirective && rightDirective == rightDirective {
-				isForListOfPrimitives = true
-			}
-		}
-	}
 	for key, leftValue := range typedLeft {
 		if key != directiveMarker {
 			if rightValue, ok := typedRight[key]; ok {
-				var fieldType reflect.Type
+				fieldType, fieldPatchStrategy, fieldPatchMergeKey, err := forkedjson.LookupPatchMetadata(structType, key)
-				var fieldPatchStrategy, fieldPatchMergeKey string
+				if err != nil {
-				var err error
+					return true, err
-				if isForListOfPrimitives {
-					fieldType = reflect.TypeOf(leftValue)
-					fieldPatchStrategy = ""
-					fieldPatchMergeKey = ""
-				} else {
-					fieldType, fieldPatchStrategy, fieldPatchMergeKey, err = forkedjson.LookupPatchMetadata(structType, key)
-					if err != nil {
-						return true, err
-					}
 				}
 
 				if hasConflicts, err := mergingMapFieldsHaveConflicts(leftValue, rightValue,
@@ -1339,7 +1172,7 @@ func mapsOfMapsHaveConflicts(typedLeft, typedRight map[string]interface{}, struc
 // than from original to current. In other words, a conflict occurs if modified changes any key
 // in a way that is different from how it is changed in current (e.g., deleting it, changing its
 // value).
-func CreateThreeWayMergePatch(original, modified, current []byte, dataStruct interface{}, overwrite bool, smPatchVersion StrategicMergePatchVersion, fns ...PreconditionFunc) ([]byte, error) {
+func CreateThreeWayMergePatch(original, modified, current []byte, dataStruct interface{}, overwrite bool, fns ...PreconditionFunc) ([]byte, error) {
 	originalMap := map[string]interface{}{}
 	if len(original) > 0 {
 		if err := json.Unmarshal(original, &originalMap); err != nil {
@@ -1370,12 +1203,12 @@ func CreateThreeWayMergePatch(original, modified, current []byte, dataStruct int
 	// from original to modified. To find it, we compute deletions, which are the deletions from
 	// original to modified, and delta, which is the difference from current to modified without
 	// deletions, and then apply delta to deletions as a patch, which should be strictly additive.
-	deltaMap, err := diffMaps(currentMap, modifiedMap, t, false, true, smPatchVersion)
+	deltaMap, err := diffMaps(currentMap, modifiedMap, t, false, true)
 	if err != nil {
 		return nil, err
 	}
 
-	deletionsMap, err := diffMaps(originalMap, modifiedMap, t, true, false, smPatchVersion)
+	deletionsMap, err := diffMaps(originalMap, modifiedMap, t, true, false)
 	if err != nil {
 		return nil, err
 	}
@@ -1395,7 +1228,7 @@ func CreateThreeWayMergePatch(original, modified, current []byte, dataStruct int
 	// If overwrite is false, and the patch contains any keys that were changed differently,
 	// then return a conflict error.
 	if !overwrite {
-		changedMap, err := diffMaps(originalMap, currentMap, t, false, false, smPatchVersion)
+		changedMap, err := diffMaps(originalMap, currentMap, t, false, false)
 		if err != nil {
 			return nil, err
 		}
@@ -1430,20 +1263,3 @@ func toYAML(v interface{}) (string, error) {
 
 	return string(y), nil
 }
-
-// GetServerSupportedSMPatchVersion takes a discoveryClient,
-// returns the max StrategicMergePatch version supported
-func GetServerSupportedSMPatchVersion(discoveryClient discovery.DiscoveryInterface) (StrategicMergePatchVersion, error) {
-	serverVersion, err := discoveryClient.ServerVersion()
-	if err != nil {
-		return Unknown, err
-	}
-	serverGitVersion := serverVersion.GitVersion
-	if serverGitVersion >= string(SMPatchVersion_1_5) {
-		return SMPatchVersion_1_5, nil
-	}
-	if serverGitVersion >= string(SMPatchVersion_1_5) {
-		return SMPatchVersion_1_0, nil
-	}
-	return Unknown, fmt.Errorf("The version is too old: %v\n", serverVersion)
-}