Cleanup content-type protobuf constants

pkg/api/testing/serialization_proto_test.go

@@ -121,7 +121,7 @@ func TestProtobufRoundTrip(t *testing.T) {
 func BenchmarkEncodeCodecProtobuf(b *testing.B) {
 	items := benchmarkItems(b)
 	width := len(items)
-	s := protobuf.NewSerializer(nil, nil, "application/arbitrary.content.type")
+	s := protobuf.NewSerializer(nil, nil)
 	b.ResetTimer()
 	for i := 0; i < b.N; i++ {
 		if _, err := runtime.Encode(s, &items[i%width]); err != nil {
@@ -142,7 +142,7 @@ func BenchmarkEncodeCodecFromInternalProtobuf(b *testing.B) {
 			b.Fatal(err)
 		}
 	}
-	s := protobuf.NewSerializer(nil, nil, "application/arbitrary.content.type")
+	s := protobuf.NewSerializer(nil, nil)
 	codec := legacyscheme.Codecs.EncoderForVersion(s, v1.SchemeGroupVersion)
 	b.ResetTimer()
 	for i := 0; i < b.N; i++ {
@@ -170,7 +170,7 @@ func BenchmarkEncodeProtobufGeneratedMarshal(b *testing.B) {
 func BenchmarkDecodeCodecToInternalProtobuf(b *testing.B) {
 	items := benchmarkItems(b)
 	width := len(items)
-	s := protobuf.NewSerializer(legacyscheme.Scheme, legacyscheme.Scheme, "application/arbitrary.content.type")
+	s := protobuf.NewSerializer(legacyscheme.Scheme, legacyscheme.Scheme)
 	encoder := legacyscheme.Codecs.EncoderForVersion(s, v1.SchemeGroupVersion)
 	var encoded [][]byte
 	for i := range items {

staging/src/k8s.io/apimachinery/pkg/api/apitesting/roundtrip/roundtrip.go

@@ -231,7 +231,7 @@ func roundTripToAllExternalVersions(t *testing.T, scheme *runtime.Scheme, codecF
 
 		// TODO remove this hack after we're past the intermediate steps
 		if !skipProtobuf && externalGVK.Group != "kubeadm.k8s.io" {
-			s := protobuf.NewSerializer(scheme, scheme, "application/arbitrary.content.type")
+			s := protobuf.NewSerializer(scheme, scheme)
 			protobufCodec := codecFactory.CodecForVersions(s, s, externalGVK.GroupVersion(), nil)
 			roundTrip(t, scheme, protobufCodec, object)
 		}
@@ -260,7 +260,7 @@ func roundTripOfExternalType(t *testing.T, scheme *runtime.Scheme, codecFactory
 
 	// TODO remove this hack after we're past the intermediate steps
 	if !skipProtobuf {
-		roundTrip(t, scheme, protobuf.NewSerializer(scheme, scheme, "application/protobuf"), object)
+		roundTrip(t, scheme, protobuf.NewSerializer(scheme, scheme), object)
 	}
 }
 

staging/src/k8s.io/apimachinery/pkg/runtime/serializer/codec_factory.go

@@ -52,8 +52,8 @@ func newSerializersForScheme(scheme *runtime.Scheme, mf json.MetaFactory) []seri
 	jsonSerializer := json.NewSerializer(mf, scheme, scheme, false)
 	jsonPrettySerializer := json.NewSerializer(mf, scheme, scheme, true)
 	yamlSerializer := json.NewYAMLSerializer(mf, scheme, scheme)
-	serializer := protobuf.NewSerializer(scheme, scheme, runtime.ContentTypeProtobuf)
+	serializer := protobuf.NewSerializer(scheme, scheme)
-	raw := protobuf.NewRawSerializer(scheme, scheme, runtime.ContentTypeProtobuf)
+	raw := protobuf.NewRawSerializer(scheme, scheme)
 
 	serializers := []serializerType{
 		{

staging/src/k8s.io/apimachinery/pkg/runtime/serializer/protobuf/protobuf.go

@@ -71,20 +71,18 @@ func IsNotMarshalable(err error) bool {
 // as-is (any type info passed with the object will be used).
 //
 // This encoding scheme is experimental, and is subject to change at any time.
-func NewSerializer(creater runtime.ObjectCreater, typer runtime.ObjectTyper, defaultContentType string) *Serializer {
+func NewSerializer(creater runtime.ObjectCreater, typer runtime.ObjectTyper) *Serializer {
 	return &Serializer{
-		prefix:      protoEncodingPrefix,
+		prefix:  protoEncodingPrefix,
-		creater:     creater,
+		creater: creater,
-		typer:       typer,
+		typer:   typer,
-		contentType: defaultContentType,
 	}
 }
 
 type Serializer struct {
-	prefix      []byte
+	prefix  []byte
-	creater     runtime.ObjectCreater
+	creater runtime.ObjectCreater
-	typer       runtime.ObjectTyper
+	typer   runtime.ObjectTyper
-	contentType string
 }
 
 var _ runtime.Serializer = &Serializer{}
@@ -138,7 +136,7 @@ func (s *Serializer) Decode(originalData []byte, gvk *schema.GroupVersionKind, i
 	if intoUnknown, ok := into.(*runtime.Unknown); ok && intoUnknown != nil {
 		*intoUnknown = unk
 		if ok, _, _ := s.RecognizesData(bytes.NewBuffer(unk.Raw)); ok {
-			intoUnknown.ContentType = s.contentType
+			intoUnknown.ContentType = runtime.ContentTypeProtobuf
 		}
 		return intoUnknown, &actual, nil
 	}
@@ -303,20 +301,18 @@ func estimateUnknownSize(unk *runtime.Unknown, byteSize uint64) uint64 {
 // encoded object, and thus is not self describing (callers must know what type is being described in order to decode).
 //
 // This encoding scheme is experimental, and is subject to change at any time.
-func NewRawSerializer(creater runtime.ObjectCreater, typer runtime.ObjectTyper, defaultContentType string) *RawSerializer {
+func NewRawSerializer(creater runtime.ObjectCreater, typer runtime.ObjectTyper) *RawSerializer {
 	return &RawSerializer{
-		creater:     creater,
+		creater: creater,
-		typer:       typer,
+		typer:   typer,
-		contentType: defaultContentType,
 	}
 }
 
 // RawSerializer encodes and decodes objects without adding a runtime.Unknown wrapper (objects are encoded without identifying
 // type).
 type RawSerializer struct {
-	creater     runtime.ObjectCreater
+	creater runtime.ObjectCreater
-	typer       runtime.ObjectTyper
+	typer   runtime.ObjectTyper
-	contentType string
 }
 
 var _ runtime.Serializer = &RawSerializer{}
@@ -358,7 +354,7 @@ func (s *RawSerializer) Decode(originalData []byte, gvk *schema.GroupVersionKind
 	if intoUnknown, ok := into.(*runtime.Unknown); ok && intoUnknown != nil {
 		intoUnknown.Raw = data
 		intoUnknown.ContentEncoding = ""
-		intoUnknown.ContentType = s.contentType
+		intoUnknown.ContentType = runtime.ContentTypeProtobuf
 		intoUnknown.SetGroupVersionKind(*actual)
 		return intoUnknown, actual, nil
 	}

staging/src/k8s.io/apimachinery/pkg/test/runtime_serializer_protobuf_protobuf_test.go

@@ -84,7 +84,7 @@ func (d *testBufferedMarshalable) DeepCopyObject() runtime.Object {
 }
 
 func TestRecognize(t *testing.T) {
-	s := protobuf.NewSerializer(nil, nil, "application/protobuf")
+	s := protobuf.NewSerializer(nil, nil)
 	ignores := [][]byte{
 		nil,
 		{},
@@ -172,7 +172,7 @@ func TestEncode(t *testing.T) {
 	}
 
 	for i, test := range testCases {
-		s := protobuf.NewSerializer(nil, nil, "application/protobuf")
+		s := protobuf.NewSerializer(nil, nil)
 		data, err := runtime.Encode(s, test.obj)
 
 		switch {
@@ -251,7 +251,7 @@ func TestProtobufDecode(t *testing.T) {
 					Kind:       "test",
 				},
 				// content type is set because the prefix matches the content
-				ContentType: "application/protobuf",
+				ContentType: runtime.ContentTypeProtobuf,
 				Raw:         []byte{0x6b, 0x38, 0x73, 0x00, 0x01, 0x02, 0x03},
 			},
 			data: wire2,
@@ -259,7 +259,7 @@ func TestProtobufDecode(t *testing.T) {
 	}
 
 	for i, test := range testCases {
-		s := protobuf.NewSerializer(nil, nil, "application/protobuf")
+		s := protobuf.NewSerializer(nil, nil)
 		unk := &runtime.Unknown{}
 		err := runtime.DecodeInto(s, test.data, unk)
 
@@ -334,7 +334,7 @@ func TestDecodeObjects(t *testing.T) {
 	for i, test := range testCases {
 		scheme.AddKnownTypes(schema.GroupVersion{Version: "v1"}, &v1.Carp{})
 		require.NoError(t, v1.AddToScheme(scheme))
-		s := protobuf.NewSerializer(scheme, scheme, "application/protobuf")
+		s := protobuf.NewSerializer(scheme, scheme)
 		obj, err := runtime.Decode(s, test.data)
 
 		switch {

test/integration/apiserver/apiserver_test.go

@@ -971,7 +971,7 @@ func expectPartialObjectMetaEvents(t *testing.T, d *json.Decoder, values ...stri
 func expectPartialObjectMetaEventsProtobuf(t *testing.T, r io.Reader, values ...string) {
 	scheme := runtime.NewScheme()
 	metav1.AddToGroupVersion(scheme, schema.GroupVersion{Version: "v1"})
-	rs := protobuf.NewRawSerializer(scheme, scheme, "application/vnd.kubernetes.protobuf")
+	rs := protobuf.NewRawSerializer(scheme, scheme)
 	d := streaming.NewDecoder(
 		protobuf.LengthDelimitedFramer.NewFrameReader(ioutil.NopCloser(r)),
 		rs,