Add protobuf preparation objects, guarded by proto tag

pkg/api/resource/quantity.go

@@ -83,6 +83,11 @@ import (
 // This format is intended to make it difficult to use these numbers without
 // writing some sort of special handling code in the hopes that that will
 // cause implementors to also use a fixed point implementation.
+//
+// +protobuf=true
+// +protobuf.embed=QuantityProto
+// +protobuf.options.marshal=false
+// +protobuf.options.(gogoproto.goproto_stringer)=false
 type Quantity struct {
 	// Amount is public, so you can manipulate it if the accessor
 	// functions are not sufficient.

pkg/api/resource/quantity_proto.go

@@ -0,0 +1,80 @@
+// +build proto
+
+/*
+Copyright 2015 The Kubernetes Authors All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package resource
+
+import (
+	"math/big"
+
+	"speter.net/go/exp/math/dec/inf"
+)
+
+// QuantityProto is a struct that is equivalent to Quantity, but intended for
+// protobuf marshalling/unmarshalling. It is generated into a serialization
+// that matches Quantity. Do not use in Go structs.
+//
+// +protobuf=true
+type QuantityProto struct {
+	// The format of the quantity
+	Format Format
+	// The scale dimension of the value
+	Scale int32
+	// Bigint is serialized as a raw bytes array
+	Bigint []byte
+}
+
+// ProtoTime returns the Time as a new ProtoTime value.
+func (q *Quantity) QuantityProto() *QuantityProto {
+	if q == nil {
+		return &QuantityProto{}
+	}
+	p := &QuantityProto{
+		Format: q.Format,
+	}
+	if q.Amount != nil {
+		p.Scale = int32(q.Amount.Scale())
+		p.Bigint = q.Amount.UnscaledBig().Bytes()
+	}
+	return p
+}
+
+// Size implements the protobuf marshalling interface.
+func (q *Quantity) Size() (n int) { return q.QuantityProto().Size() }
+
+// Reset implements the protobuf marshalling interface.
+func (q *Quantity) Unmarshal(data []byte) error {
+	p := QuantityProto{}
+	if err := p.Unmarshal(data); err != nil {
+		return err
+	}
+	q.Format = p.Format
+	b := big.NewInt(0)
+	b.SetBytes(p.Bigint)
+	q.Amount = inf.NewDecBig(b, inf.Scale(p.Scale))
+	return nil
+}
+
+// Marshal implements the protobuf marshalling interface.
+func (q *Quantity) Marshal() (data []byte, err error) {
+	return q.QuantityProto().Marshal()
+}
+
+// MarshalTo implements the protobuf marshalling interface.
+func (q *Quantity) MarshalTo(data []byte) (int, error) {
+	return q.QuantityProto().MarshalTo(data)
+}

pkg/api/serialization_proto_test.go

@@ -0,0 +1,95 @@
+// +build proto
+
+/*
+Copyright 2015 The Kubernetes Authors All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package api_test
+
+import (
+	"encoding/hex"
+	"math/rand"
+	"testing"
+
+	"github.com/gogo/protobuf/proto"
+	"k8s.io/kubernetes/pkg/api"
+	apitesting "k8s.io/kubernetes/pkg/api/testing"
+	"k8s.io/kubernetes/pkg/api/v1"
+	_ "k8s.io/kubernetes/pkg/apis/extensions"
+	_ "k8s.io/kubernetes/pkg/apis/extensions/v1beta1"
+	"k8s.io/kubernetes/pkg/runtime"
+	"k8s.io/kubernetes/pkg/runtime/protobuf"
+	"k8s.io/kubernetes/pkg/util"
+)
+
+func init() {
+	codecsToTest = append(codecsToTest, func(version string, item runtime.Object) (runtime.Codec, error) {
+		return protobuf.NewCodec(version, api.Scheme, api.Scheme, api.Scheme), nil
+	})
+}
+
+func TestProtobufRoundTrip(t *testing.T) {
+	obj := &v1.Pod{}
+	apitesting.FuzzerFor(t, "v1", rand.NewSource(benchmarkSeed)).Fuzz(obj)
+	data, err := obj.Marshal()
+	if err != nil {
+		t.Fatal(err)
+	}
+	out := &v1.Pod{}
+	if err := out.Unmarshal(data); err != nil {
+		t.Fatal(err)
+	}
+	if !api.Semantic.Equalities.DeepEqual(out, obj) {
+		t.Logf("marshal\n%s", hex.Dump(data))
+		t.Fatalf("Unmarshal is unequal\n%s", util.ObjectGoPrintSideBySide(out, obj))
+	}
+}
+
+func BenchmarkEncodeProtobufGeneratedMarshal(b *testing.B) {
+	items := benchmarkItems()
+	width := len(items)
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		if _, err := items[i%width].Marshal(); err != nil {
+			b.Fatal(err)
+		}
+	}
+	b.StopTimer()
+}
+
+// BenchmarkDecodeJSON provides a baseline for regular JSON decode performance
+func BenchmarkDecodeIntoProtobuf(b *testing.B) {
+	items := benchmarkItems()
+	width := len(items)
+	encoded := make([][]byte, width)
+	for i := range items {
+		data, err := (&items[i]).Marshal()
+		if err != nil {
+			b.Fatal(err)
+		}
+		encoded[i] = data
+		validate := &v1.Pod{}
+		if err := proto.Unmarshal(data, validate); err != nil {
+			b.Fatalf("Failed to unmarshal %d: %v\n%#v", i, err, items[i])
+		}
+	}
+
+	for i := 0; i < b.N; i++ {
+		obj := v1.Pod{}
+		if err := proto.Unmarshal(encoded[i%width], &obj); err != nil {
+			b.Fatal(err)
+		}
+	}
+}

pkg/api/serialization_test.go

@@ -18,29 +18,35 @@ package api_test
 
 import (
 	"encoding/json"
-
 	"math/rand"
 	"reflect"
 	"testing"
 
 	"github.com/davecgh/go-spew/spew"
+	flag "github.com/spf13/pflag"
+	"github.com/ugorji/go/codec"
+
 	"k8s.io/kubernetes/pkg/api"
 	"k8s.io/kubernetes/pkg/api/meta"
 	"k8s.io/kubernetes/pkg/api/testapi"
 	apitesting "k8s.io/kubernetes/pkg/api/testing"
 	"k8s.io/kubernetes/pkg/api/unversioned"
+	"k8s.io/kubernetes/pkg/api/v1"
+	_ "k8s.io/kubernetes/pkg/apis/extensions"
+	_ "k8s.io/kubernetes/pkg/apis/extensions/v1beta1"
 	"k8s.io/kubernetes/pkg/runtime"
 	"k8s.io/kubernetes/pkg/util"
 	"k8s.io/kubernetes/pkg/util/sets"
-
-	_ "k8s.io/kubernetes/pkg/apis/extensions"
-	_ "k8s.io/kubernetes/pkg/apis/extensions/v1beta1"
-
-	flag "github.com/spf13/pflag"
 )
 
 var fuzzIters = flag.Int("fuzz-iters", 20, "How many fuzzing iterations to do.")
 
+var codecsToTest = []func(version string, item runtime.Object) (runtime.Codec, error){
+	func(version string, item runtime.Object) (runtime.Codec, error) {
+		return testapi.GetCodecForObject(item)
+	},
+}
+
 func fuzzInternalObject(t *testing.T, forVersion string, item runtime.Object, seed int64) runtime.Object {
 	apitesting.FuzzerFor(t, forVersion, rand.NewSource(seed)).Fuzz(item)
 
@@ -92,16 +98,22 @@ func roundTripSame(t *testing.T, item runtime.Object, except ...string) {
 	seed := rand.Int63()
 	fuzzInternalObject(t, "", item, seed)
 
-	codec, err := testapi.GetCodecForObject(item)
-	if err != nil {
-		t.Errorf("unexpected error: %v", err)
-		return
+	version := testapi.Default.VersionUnderTest
+	codecs := []runtime.Codec{}
+	for _, fn := range codecsToTest {
+		codec, err := fn(version, item)
+		if err != nil {
+			t.Errorf("unable to get codec: %v", err)
+			return
+		}
+		codecs = append(codecs, codec)
 	}
 
-	version := testapi.Default.Version()
 	if !set.Has(version) {
 		fuzzInternalObject(t, version, item, seed)
-		roundTrip(t, codec, item)
+		for _, codec := range codecs {
+			roundTrip(t, codec, item)
+		}
 	}
 }
 
@@ -163,7 +175,9 @@ func doRoundTripTest(kind string, t *testing.T) {
 	if _, err := meta.TypeAccessor(item); err != nil {
 		t.Fatalf("%q is not a TypeMeta and cannot be tested - add it to nonRoundTrippableTypes: %v", kind, err)
 	}
-	roundTripSame(t, item, nonRoundTrippableTypesByVersion[kind]...)
+	if api.Scheme.Recognizes(testapi.Default.VersionUnderTest, kind) {
+		roundTripSame(t, item, nonRoundTrippableTypesByVersion[kind]...)
+	}
 	if !nonInternalRoundTrippableTypes.Has(kind) {
 		roundTrip(t, api.Codec, fuzzInternalObject(t, "", item, rand.Int63()))
 	}
@@ -247,54 +261,132 @@ func TestUnversionedTypes(t *testing.T) {
 
 const benchmarkSeed = 100
 
-func BenchmarkEncode(b *testing.B) {
-	pod := api.Pod{}
+func benchmarkItems() []v1.Pod {
 	apiObjectFuzzer := apitesting.FuzzerFor(nil, "", rand.NewSource(benchmarkSeed))
-	apiObjectFuzzer.Fuzz(&pod)
-	for i := 0; i < b.N; i++ {
-		testapi.Default.Codec().Encode(&pod)
+	items := make([]v1.Pod, 2)
+	for i := range items {
+		apiObjectFuzzer.Fuzz(&items[i])
 	}
+	return items
 }
 
-// BenchmarkEncodeJSON provides a baseline for regular JSON encode performance
-func BenchmarkEncodeJSON(b *testing.B) {
-	pod := api.Pod{}
-	apiObjectFuzzer := apitesting.FuzzerFor(nil, "", rand.NewSource(benchmarkSeed))
-	apiObjectFuzzer.Fuzz(&pod)
+// BenchmarkEncodeCodec measures the cost of performing a codec encode, which includes
+// reflection (to clear APIVersion and Kind)
+func BenchmarkEncodeCodec(b *testing.B) {
+	items := benchmarkItems()
+	width := len(items)
+	b.ResetTimer()
 	for i := 0; i < b.N; i++ {
-		json.Marshal(&pod)
+		if _, err := testapi.Default.Codec().Encode(&items[i%width]); err != nil {
+			b.Fatal(err)
+		}
 	}
+	b.StopTimer()
 }
 
-func BenchmarkDecode(b *testing.B) {
-	pod := api.Pod{}
-	apiObjectFuzzer := apitesting.FuzzerFor(nil, "", rand.NewSource(benchmarkSeed))
-	apiObjectFuzzer.Fuzz(&pod)
-	data, _ := testapi.Default.Codec().Encode(&pod)
+// BenchmarkEncodeJSONMarshal provides a baseline for regular JSON encode performance
+func BenchmarkEncodeJSONMarshal(b *testing.B) {
+	items := benchmarkItems()
+	width := len(items)
+	b.ResetTimer()
 	for i := 0; i < b.N; i++ {
-		testapi.Default.Codec().Decode(data)
+		if _, err := json.Marshal(&items[i%width]); err != nil {
+			b.Fatal(err)
+		}
 	}
+	b.StopTimer()
 }
 
-func BenchmarkDecodeInto(b *testing.B) {
-	pod := api.Pod{}
-	apiObjectFuzzer := apitesting.FuzzerFor(nil, "", rand.NewSource(benchmarkSeed))
-	apiObjectFuzzer.Fuzz(&pod)
-	data, _ := testapi.Default.Codec().Encode(&pod)
-	for i := 0; i < b.N; i++ {
-		obj := api.Pod{}
-		testapi.Default.Codec().DecodeInto(data, &obj)
+func BenchmarkDecodeCodec(b *testing.B) {
+	codec := testapi.Default.Codec()
+	items := benchmarkItems()
+	width := len(items)
+	encoded := make([][]byte, width)
+	for i := range items {
+		data, err := codec.Encode(&items[i])
+		if err != nil {
+			b.Fatal(err)
+		}
+		encoded[i] = data
 	}
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		if _, err := codec.Decode(encoded[i%width]); err != nil {
+			b.Fatal(err)
+		}
+	}
+	b.StopTimer()
+}
+
+func BenchmarkDecodeIntoCodec(b *testing.B) {
+	codec := testapi.Default.Codec()
+	items := benchmarkItems()
+	width := len(items)
+	encoded := make([][]byte, width)
+	for i := range items {
+		data, err := codec.Encode(&items[i])
+		if err != nil {
+			b.Fatal(err)
+		}
+		encoded[i] = data
+	}
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		obj := v1.Pod{}
+		if err := codec.DecodeInto(encoded[i%width], &obj); err != nil {
+			b.Fatal(err)
+		}
+	}
+	b.StopTimer()
 }
 
 // BenchmarkDecodeJSON provides a baseline for regular JSON decode performance
-func BenchmarkDecodeJSON(b *testing.B) {
-	pod := api.Pod{}
-	apiObjectFuzzer := apitesting.FuzzerFor(nil, "", rand.NewSource(benchmarkSeed))
-	apiObjectFuzzer.Fuzz(&pod)
-	data, _ := testapi.Default.Codec().Encode(&pod)
-	for i := 0; i < b.N; i++ {
-		obj := api.Pod{}
-		json.Unmarshal(data, &obj)
+func BenchmarkDecodeIntoJSON(b *testing.B) {
+	codec := testapi.Default.Codec()
+	items := benchmarkItems()
+	width := len(items)
+	encoded := make([][]byte, width)
+	for i := range items {
+		data, err := codec.Encode(&items[i])
+		if err != nil {
+			b.Fatal(err)
+		}
+		encoded[i] = data
 	}
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		obj := v1.Pod{}
+		if err := json.Unmarshal(encoded[i%width], &obj); err != nil {
+			b.Fatal(err)
+		}
+	}
+	b.StopTimer()
+}
+
+// BenchmarkDecodeJSON provides a baseline for codecgen JSON decode performance
+func BenchmarkDecodeIntoJSONCodecGen(b *testing.B) {
+	kcodec := testapi.Default.Codec()
+	items := benchmarkItems()
+	width := len(items)
+	encoded := make([][]byte, width)
+	for i := range items {
+		data, err := kcodec.Encode(&items[i])
+		if err != nil {
+			b.Fatal(err)
+		}
+		encoded[i] = data
+	}
+	handler := &codec.JsonHandle{}
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		obj := v1.Pod{}
+		if err := codec.NewDecoderBytes(encoded[i%width], handler).Decode(&obj); err != nil {
+			b.Fatal(err)
+		}
+	}
+	b.StopTimer()
 }

pkg/api/unversioned/duration.go

@@ -43,5 +43,5 @@ func (d *Duration) UnmarshalJSON(b []byte) error {
 
 // MarshalJSON implements the json.Marshaler interface.
 func (d Duration) MarshalJSON() ([]byte, error) {
-	return json.Marshal(d.String())
+	return json.Marshal(d.Duration.String())
 }

pkg/api/unversioned/group_version.go

@@ -40,6 +40,8 @@ func (gvr *GroupVersionResource) String() string {
 
 // GroupKind specifies a Group and a Kind, but does not force a version.  This is useful for identifying
 // concepts during lookup stages without having partially valid types
+//
+// +protobuf.options.(gogoproto.goproto_stringer)=false
 type GroupKind struct {
 	Group string
 	Kind  string
@@ -55,6 +57,8 @@ func (gk *GroupKind) String() string {
 
 // GroupVersionKind unambiguously identifies a kind.  It doesn't anonymously include GroupVersion
 // to avoid automatic coersion.  It doesn't use a GroupVersion to avoid custom marshalling
+//
+// +protobuf.options.(gogoproto.goproto_stringer)=false
 type GroupVersionKind struct {
 	Group   string
 	Version string
@@ -79,6 +83,8 @@ func (gvk *GroupVersionKind) String() string {
 }
 
 // GroupVersion contains the "group" and the "version", which uniquely identifies the API.
+//
+// +protobuf.options.(gogoproto.goproto_stringer)=false
 type GroupVersion struct {
 	Group   string
 	Version string

pkg/api/unversioned/time.go

@@ -26,8 +26,10 @@ import (
 // Time is a wrapper around time.Time which supports correct
 // marshaling to YAML and JSON.  Wrappers are provided for many
 // of the factory methods that the time package offers.
+//
+// +protobuf.options.marshal=false
 type Time struct {
-	time.Time
+	time.Time `protobuf:"Timestamp,1,req,name=time"`
 }
 
 // NewTime returns a wrapped instance of the provided time

pkg/api/unversioned/time_proto.go

@@ -0,0 +1,80 @@
+// +build proto
+
+/*
+Copyright 2015 The Kubernetes Authors All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package unversioned
+
+import (
+	"time"
+)
+
+// ProtoTime is a struct that is equivalent to Time, but intended for
+// protobuf marshalling/unmarshalling. It is generated into a serialization
+// that matches Time. Do not use in Go structs.
+type ProtoTime struct {
+	// Represents the time of an event.
+	Timestamp Timestamp `json:"timestamp"`
+}
+
+// Timestamp is a protobuf Timestamp compatible representation of time.Time
+type Timestamp struct {
+	// Represents seconds of UTC time since Unix epoch
+	// 1970-01-01T00:00:00Z. Must be from from 0001-01-01T00:00:00Z to
+	// 9999-12-31T23:59:59Z inclusive.
+	Seconds int64 `json:"seconds"`
+	// Non-negative fractions of a second at nanosecond resolution. Negative
+	// second values with fractions must still have non-negative nanos values
+	// that count forward in time. Must be from 0 to 999,999,999
+	// inclusive.
+	Nanos int32 `json:"nanos"`
+}
+
+// ProtoTime returns the Time as a new ProtoTime value.
+func (m *Time) ProtoTime() *ProtoTime {
+	if m == nil {
+		return &ProtoTime{}
+	}
+	return &ProtoTime{
+		Timestamp: Timestamp{
+			Seconds: m.Time.Unix(),
+			Nanos:   int32(m.Time.Nanosecond()),
+		},
+	}
+}
+
+// Size implements the protobuf marshalling interface.
+func (m *Time) Size() (n int) { return m.ProtoTime().Size() }
+
+// Reset implements the protobuf marshalling interface.
+func (m *Time) Unmarshal(data []byte) error {
+	p := ProtoTime{}
+	if err := p.Unmarshal(data); err != nil {
+		return err
+	}
+	m.Time = time.Unix(p.Timestamp.Seconds, int64(p.Timestamp.Nanos))
+	return nil
+}
+
+// Marshal implements the protobuf marshalling interface.
+func (m *Time) Marshal() (data []byte, err error) {
+	return m.ProtoTime().Marshal()
+}
+
+// MarshalTo implements the protobuf marshalling interface.
+func (m *Time) MarshalTo(data []byte) (int, error) {
+	return m.ProtoTime().MarshalTo(data)
+}

pkg/api/unversioned/types.go

@@ -311,6 +311,8 @@ func (*APIResourceList) IsAnAPIObject() {}
 
 // APIVersions lists the versions that are available, to allow clients to
 // discover the API at /api, which is the root path of the legacy v1 API.
+//
+// +protobuf.options.(gogoproto.goproto_stringer)=false
 type APIVersions struct {
 	TypeMeta `json:",inline"`
 	// versions are the api versions that are available.

pkg/runtime/protobuf/doc.go

@@ -0,0 +1,18 @@
+/*
+Copyright 2015 The Kubernetes Authors All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package protobuf implements ProtoBuf serialization and deserialization.
+package protobuf

pkg/runtime/protobuf/protobuf.go

@@ -0,0 +1,158 @@
+// +build proto
+
+/*
+Copyright 2015 The Kubernetes Authors All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package protobuf
+
+import (
+	"fmt"
+	"io"
+	"net/url"
+	"reflect"
+
+	"github.com/gogo/protobuf/proto"
+
+	"k8s.io/kubernetes/pkg/api/unversioned"
+	"k8s.io/kubernetes/pkg/runtime"
+)
+
+// NewCodec
+func NewCodec(version string, creater runtime.ObjectCreater, typer runtime.ObjectTyper, convertor runtime.ObjectConvertor) runtime.Codec {
+	return &codec{
+		version:   version,
+		creater:   creater,
+		typer:     typer,
+		convertor: convertor,
+	}
+}
+
+// codec decodes protobuf objects
+type codec struct {
+	version       string
+	outputVersion string
+	creater       runtime.ObjectCreater
+	typer         runtime.ObjectTyper
+	convertor     runtime.ObjectConvertor
+}
+
+var _ runtime.Codec = codec{}
+
+func (c codec) Decode(data []byte) (runtime.Object, error) {
+	unknown := &runtime.Unknown{}
+	if err := proto.Unmarshal(data, unknown); err != nil {
+		return nil, err
+	}
+	obj, err := c.creater.New(unknown.APIVersion, unknown.Kind)
+	if err != nil {
+		return nil, err
+	}
+	pobj, ok := obj.(proto.Message)
+	if !ok {
+		return nil, fmt.Errorf("runtime object is not a proto.Message: %v", reflect.TypeOf(obj))
+	}
+	if err := proto.Unmarshal(unknown.RawJSON, pobj); err != nil {
+		return nil, err
+	}
+	if unknown.APIVersion != c.outputVersion {
+		out, err := c.convertor.ConvertToVersion(obj, c.outputVersion)
+		if err != nil {
+			return nil, err
+		}
+		obj = out
+	}
+	return obj, nil
+}
+
+func (c codec) DecodeToVersion(data []byte, version unversioned.GroupVersion) (runtime.Object, error) {
+	return nil, fmt.Errorf("unimplemented")
+}
+
+func (c codec) DecodeInto(data []byte, obj runtime.Object) error {
+	version, kind, err := c.typer.ObjectVersionAndKind(obj)
+	if err != nil {
+		return err
+	}
+	unknown := &runtime.Unknown{}
+	if err := proto.Unmarshal(data, unknown); err != nil {
+		return err
+	}
+	if unknown.APIVersion == version && unknown.Kind == kind {
+		pobj, ok := obj.(proto.Message)
+		if !ok {
+			return fmt.Errorf("runtime object is not a proto.Message: %v", reflect.TypeOf(obj))
+		}
+
+		return proto.Unmarshal(unknown.RawJSON, pobj)
+	}
+
+	versioned, err := c.creater.New(unknown.APIVersion, unknown.Kind)
+	if err != nil {
+		return err
+	}
+
+	pobj, ok := versioned.(proto.Message)
+	if !ok {
+		return fmt.Errorf("runtime object is not a proto.Message: %v", reflect.TypeOf(obj))
+	}
+
+	if err := proto.Unmarshal(unknown.RawJSON, pobj); err != nil {
+		return err
+	}
+	return c.convertor.Convert(versioned, obj)
+}
+
+func (c codec) DecodeIntoWithSpecifiedVersionKind(data []byte, obj runtime.Object, kind unversioned.GroupVersionKind) error {
+	return fmt.Errorf("unimplemented")
+}
+
+func (c codec) DecodeParametersInto(parameters url.Values, obj runtime.Object) error {
+	return fmt.Errorf("unimplemented")
+}
+
+func (c codec) Encode(obj runtime.Object) (data []byte, err error) {
+	version, kind, err := c.typer.ObjectVersionAndKind(obj)
+	if err != nil {
+		return nil, err
+	}
+	if len(version) == 0 {
+		version = c.version
+		converted, err := c.convertor.ConvertToVersion(obj, version)
+		if err != nil {
+			return nil, err
+		}
+		obj = converted
+	}
+	m, ok := obj.(proto.Marshaler)
+	if !ok {
+		return nil, fmt.Errorf("object %v (kind: %s in version: %s) does not implement ProtoBuf marshalling", reflect.TypeOf(obj), kind, c.version)
+	}
+	b, err := m.Marshal()
+	if err != nil {
+		return nil, err
+	}
+	return (&runtime.Unknown{
+		TypeMeta: runtime.TypeMeta{
+			Kind:       kind,
+			APIVersion: version,
+		},
+		RawJSON: b,
+	}).Marshal()
+}
+
+func (c codec) EncodeToStream(obj runtime.Object, stream io.Writer) error {
+	return fmt.Errorf("unimplemented")
+}

pkg/runtime/types.go

@@ -30,6 +30,7 @@ package runtime
 // TypeMeta is provided here for convenience. You may use it directly from this package or define
 // your own with the same fields.
 //
+// +protobuf=true
 type TypeMeta struct {
 	APIVersion string `json:"apiVersion,omitempty" yaml:"apiVersion,omitempty"`
 	Kind       string `json:"kind,omitempty" yaml:"kind,omitempty"`
@@ -98,6 +99,8 @@ type EmbeddedObject struct {
 // JSON stored in RawExtension, turning it into the correct object type, and storing it
 // in the EmbeddedObject. (TODO: In the case where the object is of an unknown type, a
 // runtime.Unknown object will be created and stored.)
+//
+// +protobuf=true
 type RawExtension struct {
 	RawJSON []byte
 }
@@ -107,6 +110,8 @@ type RawExtension struct {
 // TypeMeta features-- kind, version, etc.
 // TODO: Make this object have easy access to field based accessors and settors for
 // metadata and field mutatation.
+//
+// +protobuf=true
 type Unknown struct {
 	TypeMeta `json:",inline"`
 	// RawJSON will hold the complete JSON of the object which couldn't be matched

pkg/util/intstr/intstr.go

@@ -29,6 +29,9 @@ import (
 // inner type.  This allows you to have, for example, a JSON field that can
 // accept a name or number.
 // TODO: Rename to Int32OrString
+//
+// +protobuf=true
+// +protobuf.options.(gogoproto.goproto_stringer)=false
 type IntOrString struct {
 	Type   Type
 	IntVal int32