Add vendor folder to git

vendor/k8s.io/apimachinery/pkg/conversion/unstructured/BUILD

@@ -0,0 +1,39 @@
+package(default_visibility = ["//visibility:public"])
+
+licenses(["notice"])
+
+load(
+    "@io_bazel_rules_go//go:def.bzl",
+    "go_library",
+    "go_test",
+)
+
+go_test(
+    name = "go_default_test",
+    srcs = ["converter_test.go"],
+    library = ":go_default_library",
+    tags = ["automanaged"],
+    deps = [
+        "//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/runtime/schema:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/util/diff:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/util/json:go_default_library",
+    ],
+)
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "converter.go",
+        "doc.go",
+    ],
+    tags = ["automanaged"],
+    deps = [
+        "//vendor/github.com/golang/glog:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/api/equality:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/util/diff:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/util/json:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/util/runtime:go_default_library",
+    ],
+)

vendor/k8s.io/apimachinery/pkg/conversion/unstructured/converter.go

@@ -0,0 +1,681 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+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 unstructured
+
+import (
+	"bytes"
+	encodingjson "encoding/json"
+	"fmt"
+	"math"
+	"os"
+	"reflect"
+	"strconv"
+	"strings"
+	"sync"
+	"sync/atomic"
+
+	apiequality "k8s.io/apimachinery/pkg/api/equality"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/util/diff"
+	"k8s.io/apimachinery/pkg/util/json"
+	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
+
+	"github.com/golang/glog"
+)
+
+// Converter is an interface for converting between runtime.Object
+// and map[string]interface representation.
+type Converter interface {
+	ToUnstructured(obj runtime.Object, u *map[string]interface{}) error
+	FromUnstructured(u map[string]interface{}, obj runtime.Object) error
+}
+
+type structField struct {
+	structType reflect.Type
+	field      int
+}
+
+type fieldInfo struct {
+	name      string
+	nameValue reflect.Value
+	omitempty bool
+}
+
+type fieldsCacheMap map[structField]*fieldInfo
+
+type fieldsCache struct {
+	sync.Mutex
+	value atomic.Value
+}
+
+func newFieldsCache() *fieldsCache {
+	cache := &fieldsCache{}
+	cache.value.Store(make(fieldsCacheMap))
+	return cache
+}
+
+var (
+	marshalerType          = reflect.TypeOf(new(encodingjson.Marshaler)).Elem()
+	unmarshalerType        = reflect.TypeOf(new(encodingjson.Unmarshaler)).Elem()
+	mapStringInterfaceType = reflect.TypeOf(map[string]interface{}{})
+	stringType             = reflect.TypeOf(string(""))
+	int64Type              = reflect.TypeOf(int64(0))
+	uint64Type             = reflect.TypeOf(uint64(0))
+	float64Type            = reflect.TypeOf(float64(0))
+	boolType               = reflect.TypeOf(bool(false))
+	fieldCache             = newFieldsCache()
+	DefaultConverter       = NewConverter(parseBool(os.Getenv("KUBE_PATCH_CONVERSION_DETECTOR")))
+)
+
+func parseBool(key string) bool {
+	if len(key) == 0 {
+		return false
+	}
+	value, err := strconv.ParseBool(key)
+	if err != nil {
+		utilruntime.HandleError(fmt.Errorf("Couldn't parse '%s' as bool for unstructured mismatch detection", key))
+	}
+	return value
+}
+
+// ConverterImpl knows how to convert betweek runtime.Object and
+// Unstructured in both ways.
+type converterImpl struct {
+	// If true, we will be additionally running conversion via json
+	// to ensure that the result is true.
+	// This is supposed to be set only in tests.
+	mismatchDetection bool
+}
+
+func NewConverter(mismatchDetection bool) Converter {
+	return &converterImpl{
+		mismatchDetection: mismatchDetection,
+	}
+}
+
+func (c *converterImpl) FromUnstructured(u map[string]interface{}, obj runtime.Object) error {
+	err := fromUnstructured(reflect.ValueOf(u), reflect.ValueOf(obj).Elem())
+	if c.mismatchDetection {
+		newObj := reflect.New(reflect.TypeOf(obj).Elem()).Interface().(runtime.Object)
+		newErr := fromUnstructuredViaJSON(u, newObj)
+		if (err != nil) != (newErr != nil) {
+			glog.Fatalf("FromUnstructured unexpected error for %v: error: %v", u, err)
+		}
+		if err == nil && !apiequality.Semantic.DeepEqual(obj, newObj) {
+			glog.Fatalf("FromUnstructured mismatch for %#v, diff: %v", obj, diff.ObjectReflectDiff(obj, newObj))
+		}
+	}
+	return err
+}
+
+func fromUnstructuredViaJSON(u map[string]interface{}, obj runtime.Object) error {
+	data, err := json.Marshal(u)
+	if err != nil {
+		return err
+	}
+	return json.Unmarshal(data, obj)
+}
+
+func fromUnstructured(sv, dv reflect.Value) error {
+	sv = unwrapInterface(sv)
+	if !sv.IsValid() {
+		dv.Set(reflect.Zero(dv.Type()))
+		return nil
+	}
+	st, dt := sv.Type(), dv.Type()
+
+	switch dt.Kind() {
+	case reflect.Map, reflect.Slice, reflect.Ptr, reflect.Struct, reflect.Interface:
+		// Those require non-trivial conversion.
+	default:
+		// This should handle all simple types.
+		if st.AssignableTo(dt) {
+			dv.Set(sv)
+			return nil
+		}
+		// We cannot simply use "ConvertibleTo", as JSON doesn't support conversions
+		// between those four groups: bools, integers, floats and string. We need to
+		// do the same.
+		if st.ConvertibleTo(dt) {
+			switch st.Kind() {
+			case reflect.String:
+				switch dt.Kind() {
+				case reflect.String:
+					dv.Set(sv.Convert(dt))
+					return nil
+				}
+			case reflect.Bool:
+				switch dt.Kind() {
+				case reflect.Bool:
+					dv.Set(sv.Convert(dt))
+					return nil
+				}
+			case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64,
+				reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+				switch dt.Kind() {
+				case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64,
+					reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+					dv.Set(sv.Convert(dt))
+					return nil
+				}
+			case reflect.Float32, reflect.Float64:
+				switch dt.Kind() {
+				case reflect.Float32, reflect.Float64:
+					dv.Set(sv.Convert(dt))
+					return nil
+				}
+				if sv.Float() == math.Trunc(sv.Float()) {
+					dv.Set(sv.Convert(dt))
+					return nil
+				}
+			}
+			return fmt.Errorf("cannot convert %s to %s", st.String(), dt.String())
+		}
+	}
+
+	// Check if the object has a custom JSON marshaller/unmarshaller.
+	if reflect.PtrTo(dt).Implements(unmarshalerType) {
+		data, err := json.Marshal(sv.Interface())
+		if err != nil {
+			return fmt.Errorf("error encoding %s to json: %v", st.String(), err)
+		}
+		unmarshaler := dv.Addr().Interface().(encodingjson.Unmarshaler)
+		return unmarshaler.UnmarshalJSON(data)
+	}
+
+	switch dt.Kind() {
+	case reflect.Map:
+		return mapFromUnstructured(sv, dv)
+	case reflect.Slice:
+		return sliceFromUnstructured(sv, dv)
+	case reflect.Ptr:
+		return pointerFromUnstructured(sv, dv)
+	case reflect.Struct:
+		return structFromUnstructured(sv, dv)
+	case reflect.Interface:
+		return interfaceFromUnstructured(sv, dv)
+	default:
+		return fmt.Errorf("unrecognized type: %v", dt.Kind())
+	}
+}
+
+func fieldInfoFromField(structType reflect.Type, field int) *fieldInfo {
+	fieldCacheMap := fieldCache.value.Load().(fieldsCacheMap)
+	if info, ok := fieldCacheMap[structField{structType, field}]; ok {
+		return info
+	}
+
+	// Cache miss - we need to compute the field name.
+	info := &fieldInfo{}
+	typeField := structType.Field(field)
+	jsonTag := typeField.Tag.Get("json")
+	if len(jsonTag) == 0 {
+		// Make the first character lowercase.
+		if typeField.Name == "" {
+			info.name = typeField.Name
+		} else {
+			info.name = strings.ToLower(typeField.Name[:1]) + typeField.Name[1:]
+		}
+	} else {
+		items := strings.Split(jsonTag, ",")
+		info.name = items[0]
+		for i := range items {
+			if items[i] == "omitempty" {
+				info.omitempty = true
+			}
+		}
+	}
+	info.nameValue = reflect.ValueOf(info.name)
+
+	fieldCache.Lock()
+	defer fieldCache.Unlock()
+	fieldCacheMap = fieldCache.value.Load().(fieldsCacheMap)
+	newFieldCacheMap := make(fieldsCacheMap)
+	for k, v := range fieldCacheMap {
+		newFieldCacheMap[k] = v
+	}
+	newFieldCacheMap[structField{structType, field}] = info
+	fieldCache.value.Store(newFieldCacheMap)
+	return info
+}
+
+func unwrapInterface(v reflect.Value) reflect.Value {
+	for v.Kind() == reflect.Interface {
+		v = v.Elem()
+	}
+	return v
+}
+
+func mapFromUnstructured(sv, dv reflect.Value) error {
+	st, dt := sv.Type(), dv.Type()
+	if st.Kind() != reflect.Map {
+		return fmt.Errorf("cannot restore map from %v", st.Kind())
+	}
+
+	if !st.Key().AssignableTo(dt.Key()) && !st.Key().ConvertibleTo(dt.Key()) {
+		return fmt.Errorf("cannot copy map with non-assignable keys: %v %v", st.Key(), dt.Key())
+	}
+
+	if sv.IsNil() {
+		dv.Set(reflect.Zero(dt))
+		return nil
+	}
+	dv.Set(reflect.MakeMap(dt))
+	for _, key := range sv.MapKeys() {
+		value := reflect.New(dt.Elem()).Elem()
+		if val := unwrapInterface(sv.MapIndex(key)); val.IsValid() {
+			if err := fromUnstructured(val, value); err != nil {
+				return err
+			}
+		} else {
+			value.Set(reflect.Zero(dt.Elem()))
+		}
+		if st.Key().AssignableTo(dt.Key()) {
+			dv.SetMapIndex(key, value)
+		} else {
+			dv.SetMapIndex(key.Convert(dt.Key()), value)
+		}
+	}
+	return nil
+}
+
+func sliceFromUnstructured(sv, dv reflect.Value) error {
+	st, dt := sv.Type(), dv.Type()
+	if st.Kind() == reflect.String && dt.Elem().Kind() == reflect.Uint8 {
+		// We store original []byte representation as string.
+		// This conversion is allowed, but we need to be careful about
+		// marshaling data appropriately.
+		if len(sv.Interface().(string)) > 0 {
+			marshalled, err := json.Marshal(sv.Interface())
+			if err != nil {
+				return fmt.Errorf("error encoding %s to json: %v", st, err)
+			}
+			// TODO: Is this Unmarshal needed?
+			var data []byte
+			err = json.Unmarshal(marshalled, &data)
+			if err != nil {
+				return fmt.Errorf("error decoding from json: %v", err)
+			}
+			dv.SetBytes(data)
+		} else {
+			dv.Set(reflect.Zero(dt))
+		}
+		return nil
+	}
+	if st.Kind() != reflect.Slice {
+		return fmt.Errorf("cannot restore slice from %v", st.Kind())
+	}
+
+	if sv.IsNil() {
+		dv.Set(reflect.Zero(dt))
+		return nil
+	}
+	dv.Set(reflect.MakeSlice(dt, sv.Len(), sv.Cap()))
+	for i := 0; i < sv.Len(); i++ {
+		if err := fromUnstructured(sv.Index(i), dv.Index(i)); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func pointerFromUnstructured(sv, dv reflect.Value) error {
+	st, dt := sv.Type(), dv.Type()
+
+	if st.Kind() == reflect.Ptr && sv.IsNil() {
+		dv.Set(reflect.Zero(dt))
+		return nil
+	}
+	dv.Set(reflect.New(dt.Elem()))
+	switch st.Kind() {
+	case reflect.Ptr, reflect.Interface:
+		return fromUnstructured(sv.Elem(), dv.Elem())
+	default:
+		return fromUnstructured(sv, dv.Elem())
+	}
+}
+
+func structFromUnstructured(sv, dv reflect.Value) error {
+	st, dt := sv.Type(), dv.Type()
+	if st.Kind() != reflect.Map {
+		return fmt.Errorf("cannot restore struct from: %v", st.Kind())
+	}
+
+	for i := 0; i < dt.NumField(); i++ {
+		fieldInfo := fieldInfoFromField(dt, i)
+		fv := dv.Field(i)
+
+		if len(fieldInfo.name) == 0 {
+			// This field is inlined.
+			if err := fromUnstructured(sv, fv); err != nil {
+				return err
+			}
+		} else {
+			value := unwrapInterface(sv.MapIndex(fieldInfo.nameValue))
+			if value.IsValid() {
+				if err := fromUnstructured(value, fv); err != nil {
+					return err
+				}
+			} else {
+				fv.Set(reflect.Zero(fv.Type()))
+			}
+		}
+	}
+	return nil
+}
+
+func interfaceFromUnstructured(sv, dv reflect.Value) error {
+	// TODO: Is this conversion safe?
+	dv.Set(sv)
+	return nil
+}
+
+func (c *converterImpl) ToUnstructured(obj runtime.Object, u *map[string]interface{}) error {
+	err := toUnstructured(reflect.ValueOf(obj).Elem(), reflect.ValueOf(u).Elem())
+	if c.mismatchDetection {
+		newUnstr := &map[string]interface{}{}
+		newErr := toUnstructuredViaJSON(obj, newUnstr)
+		if (err != nil) != (newErr != nil) {
+			glog.Fatalf("ToUnstructured unexpected error for %v: error: %v", obj, err)
+		}
+		if err == nil && !apiequality.Semantic.DeepEqual(u, newUnstr) {
+			glog.Fatalf("ToUnstructured mismatch for %#v, diff: %v", u, diff.ObjectReflectDiff(u, newUnstr))
+		}
+	}
+	return err
+}
+
+func toUnstructuredViaJSON(obj runtime.Object, u *map[string]interface{}) error {
+	data, err := json.Marshal(obj)
+	if err != nil {
+		return err
+	}
+	return json.Unmarshal(data, u)
+}
+
+func toUnstructured(sv, dv reflect.Value) error {
+	st, dt := sv.Type(), dv.Type()
+
+	// Check if the object has a custom JSON marshaller/unmarshaller.
+	if st.Implements(marshalerType) {
+		if sv.Kind() == reflect.Ptr && sv.IsNil() {
+			// We're done - we don't need to store anything.
+			return nil
+		}
+
+		marshaler := sv.Interface().(encodingjson.Marshaler)
+		data, err := marshaler.MarshalJSON()
+		if err != nil {
+			return err
+		}
+		if bytes.Equal(data, []byte("null")) {
+			// We're done - we don't need to store anything.
+		} else {
+			switch {
+			case len(data) > 0 && data[0] == '"':
+				var result string
+				err := json.Unmarshal(data, &result)
+				if err != nil {
+					return fmt.Errorf("error decoding from json: %v", err)
+				}
+				dv.Set(reflect.ValueOf(result))
+			case len(data) > 0 && data[0] == '{':
+				result := make(map[string]interface{})
+				err := json.Unmarshal(data, &result)
+				if err != nil {
+					return fmt.Errorf("error decoding from json: %v", err)
+				}
+				dv.Set(reflect.ValueOf(result))
+			default:
+				var result int64
+				err := json.Unmarshal(data, &result)
+				if err != nil {
+					return fmt.Errorf("error decoding from json: %v", err)
+				}
+				dv.Set(reflect.ValueOf(result))
+			}
+		}
+		return nil
+	}
+
+	switch st.Kind() {
+	case reflect.String:
+		if dt.Kind() == reflect.Interface && dv.NumMethod() == 0 {
+			dv.Set(reflect.New(stringType))
+		}
+		dv.Set(reflect.ValueOf(sv.String()))
+		return nil
+	case reflect.Bool:
+		if dt.Kind() == reflect.Interface && dv.NumMethod() == 0 {
+			dv.Set(reflect.New(boolType))
+		}
+		dv.Set(reflect.ValueOf(sv.Bool()))
+		return nil
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		if dt.Kind() == reflect.Interface && dv.NumMethod() == 0 {
+			dv.Set(reflect.New(int64Type))
+		}
+		dv.Set(reflect.ValueOf(sv.Int()))
+		return nil
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+		if dt.Kind() == reflect.Interface && dv.NumMethod() == 0 {
+			dv.Set(reflect.New(uint64Type))
+		}
+		dv.Set(reflect.ValueOf(sv.Uint()))
+		return nil
+	case reflect.Float32, reflect.Float64:
+		if dt.Kind() == reflect.Interface && dv.NumMethod() == 0 {
+			dv.Set(reflect.New(float64Type))
+		}
+		dv.Set(reflect.ValueOf(sv.Float()))
+		return nil
+	case reflect.Map:
+		return mapToUnstructured(sv, dv)
+	case reflect.Slice:
+		return sliceToUnstructured(sv, dv)
+	case reflect.Ptr:
+		return pointerToUnstructured(sv, dv)
+	case reflect.Struct:
+		return structToUnstructured(sv, dv)
+	case reflect.Interface:
+		return interfaceToUnstructured(sv, dv)
+	default:
+		return fmt.Errorf("unrecognized type: %v", st.Kind())
+	}
+}
+
+func mapToUnstructured(sv, dv reflect.Value) error {
+	st, dt := sv.Type(), dv.Type()
+	if sv.IsNil() {
+		dv.Set(reflect.Zero(dt))
+		return nil
+	}
+	if dt.Kind() == reflect.Interface && dv.NumMethod() == 0 {
+		if st.Key().Kind() == reflect.String {
+			switch st.Elem().Kind() {
+			// TODO It should be possible to reuse the slice for primitive types.
+			// However, it is panicing in the following form.
+			// case reflect.String, reflect.Bool,
+			// 	reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64,
+			// 	reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+			// 	sv.Set(sv)
+			// 	return nil
+			default:
+				// We need to do a proper conversion.
+			}
+		}
+		dv.Set(reflect.MakeMap(mapStringInterfaceType))
+		dv = dv.Elem()
+		dt = dv.Type()
+	}
+	if dt.Kind() != reflect.Map {
+		return fmt.Errorf("cannot convert struct to: %v", dt.Kind())
+	}
+
+	if !st.Key().AssignableTo(dt.Key()) && !st.Key().ConvertibleTo(dt.Key()) {
+		return fmt.Errorf("cannot copy map with non-assignable keys: %v %v", st.Key(), dt.Key())
+	}
+
+	for _, key := range sv.MapKeys() {
+		value := reflect.New(dt.Elem()).Elem()
+		if err := toUnstructured(sv.MapIndex(key), value); err != nil {
+			return err
+		}
+		if st.Key().AssignableTo(dt.Key()) {
+			dv.SetMapIndex(key, value)
+		} else {
+			dv.SetMapIndex(key.Convert(dt.Key()), value)
+		}
+	}
+	return nil
+}
+
+func sliceToUnstructured(sv, dv reflect.Value) error {
+	st, dt := sv.Type(), dv.Type()
+	if sv.IsNil() {
+		dv.Set(reflect.Zero(dt))
+		return nil
+	}
+	if st.Elem().Kind() == reflect.Uint8 {
+		dv.Set(reflect.New(stringType))
+		data, err := json.Marshal(sv.Bytes())
+		if err != nil {
+			return err
+		}
+		var result string
+		if err = json.Unmarshal(data, &result); err != nil {
+			return err
+		}
+		dv.Set(reflect.ValueOf(result))
+		return nil
+	}
+	if dt.Kind() == reflect.Interface && dv.NumMethod() == 0 {
+		switch st.Elem().Kind() {
+		// TODO It should be possible to reuse the slice for primitive types.
+		// However, it is panicing in the following form.
+		// case reflect.String, reflect.Bool,
+		// 	reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64,
+		// 	reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+		// 	sv.Set(sv)
+		// 	return nil
+		default:
+			// We need to do a proper conversion.
+			dv.Set(reflect.MakeSlice(reflect.SliceOf(dt), sv.Len(), sv.Cap()))
+			dv = dv.Elem()
+			dt = dv.Type()
+		}
+	}
+	if dt.Kind() != reflect.Slice {
+		return fmt.Errorf("cannot convert slice to: %v", dt.Kind())
+	}
+	for i := 0; i < sv.Len(); i++ {
+		if err := toUnstructured(sv.Index(i), dv.Index(i)); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func pointerToUnstructured(sv, dv reflect.Value) error {
+	if sv.IsNil() {
+		// We're done - we don't need to store anything.
+		return nil
+	}
+	return toUnstructured(sv.Elem(), dv)
+}
+
+func isZero(v reflect.Value) bool {
+	switch v.Kind() {
+	case reflect.Array, reflect.String:
+		return v.Len() == 0
+	case reflect.Bool:
+		return !v.Bool()
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		return v.Int() == 0
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+		return v.Uint() == 0
+	case reflect.Float32, reflect.Float64:
+		return v.Float() == 0
+	case reflect.Map, reflect.Slice:
+		// TODO: It seems that 0-len maps are ignored in it.
+		return v.IsNil() || v.Len() == 0
+	case reflect.Ptr, reflect.Interface:
+		return v.IsNil()
+	}
+	return false
+}
+
+func structToUnstructured(sv, dv reflect.Value) error {
+	st, dt := sv.Type(), dv.Type()
+	if dt.Kind() == reflect.Interface && dv.NumMethod() == 0 {
+		dv.Set(reflect.MakeMap(mapStringInterfaceType))
+		dv = dv.Elem()
+		dt = dv.Type()
+	}
+	if dt.Kind() != reflect.Map {
+		return fmt.Errorf("cannot convert struct to: %v", dt.Kind())
+	}
+	realMap := dv.Interface().(map[string]interface{})
+
+	for i := 0; i < st.NumField(); i++ {
+		fieldInfo := fieldInfoFromField(st, i)
+		fv := sv.Field(i)
+
+		if fieldInfo.name == "-" {
+			// This field should be skipped.
+			continue
+		}
+		if fieldInfo.omitempty && isZero(fv) {
+			// omitempty fields should be ignored.
+			continue
+		}
+		if len(fieldInfo.name) == 0 {
+			// This field is inlined.
+			if err := toUnstructured(fv, dv); err != nil {
+				return err
+			}
+			continue
+		}
+		switch fv.Type().Kind() {
+		case reflect.String:
+			realMap[fieldInfo.name] = fv.String()
+		case reflect.Bool:
+			realMap[fieldInfo.name] = fv.Bool()
+		case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+			realMap[fieldInfo.name] = fv.Int()
+		case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+			realMap[fieldInfo.name] = fv.Uint()
+		case reflect.Float32, reflect.Float64:
+			realMap[fieldInfo.name] = fv.Float()
+		default:
+			subv := reflect.New(dt.Elem()).Elem()
+			if err := toUnstructured(fv, subv); err != nil {
+				return err
+			}
+			dv.SetMapIndex(fieldInfo.nameValue, subv)
+		}
+	}
+	return nil
+}
+
+func interfaceToUnstructured(sv, dv reflect.Value) error {
+	if !sv.IsValid() || sv.IsNil() {
+		dv.Set(reflect.Zero(dv.Type()))
+		return nil
+	}
+	return toUnstructured(sv.Elem(), dv)
+}

vendor/k8s.io/apimachinery/pkg/conversion/unstructured/converter_test.go

@@ -0,0 +1,462 @@
+/*
+Copyright 2015 The Kubernetes Authors.
+
+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 unstructured
+
+import (
+	"fmt"
+	"reflect"
+	"testing"
+
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"k8s.io/apimachinery/pkg/util/diff"
+	"k8s.io/apimachinery/pkg/util/json"
+)
+
+// Definte a number of test types.
+type A struct {
+	A int    `json:"aa,omitempty"`
+	B string `json:"ab,omitempty"`
+	C bool   `json:"ac,omitempty"`
+}
+
+type B struct {
+	A A                 `json:"ba"`
+	B string            `json:"bb"`
+	C map[string]string `json:"bc"`
+	D []string          `json:"bd"`
+}
+
+type C struct {
+	A []A `json:"ca"`
+	B `json:",inline"`
+	C string         `json:"cc"`
+	D *int64         `json:"cd"`
+	E map[string]int `json:"ce"`
+	F []bool         `json:"cf"`
+	G []int          `json:"cg"`
+	H float32        `json:"ch"`
+	I []interface{}  `json:"ci"`
+}
+
+type D struct {
+	A []interface{} `json:"da"`
+}
+
+type E struct {
+	A interface{} `json:"ea"`
+}
+
+type F struct {
+	A string            `json:"fa"`
+	B map[string]string `json:"fb"`
+	C []A               `json:"fc"`
+	D int               `json:"fd"`
+	E float32           `json:"fe"`
+	F []string          `json:"ff"`
+	G []int             `json:"fg"`
+	H []bool            `json:"fh"`
+	I []float32         `json:"fi"`
+}
+
+// Implement runtime.Object to make types usable for tests.
+
+func (c *C) GetObjectKind() schema.ObjectKind {
+	return schema.EmptyObjectKind
+}
+
+func (d *D) GetObjectKind() schema.ObjectKind {
+	return schema.EmptyObjectKind
+}
+
+func (e *E) GetObjectKind() schema.ObjectKind {
+	return schema.EmptyObjectKind
+}
+
+func (f *F) GetObjectKind() schema.ObjectKind {
+	return schema.EmptyObjectKind
+}
+
+func doRoundTrip(t *testing.T, item runtime.Object) {
+	data, err := json.Marshal(item)
+	if err != nil {
+		t.Errorf("Error when marshaling object: %v", err)
+		return
+	}
+
+	unstr := make(map[string]interface{})
+	err = json.Unmarshal(data, &unstr)
+	if err != nil {
+		t.Errorf("Error when unmarshaling to unstructured: %v", err)
+		return
+	}
+
+	data, err = json.Marshal(unstr)
+	if err != nil {
+		t.Errorf("Error when marshaling unstructured: %v", err)
+		return
+	}
+	unmarshalledObj := reflect.New(reflect.TypeOf(item).Elem()).Interface()
+	err = json.Unmarshal(data, &unmarshalledObj)
+	if err != nil {
+		t.Errorf("Error when unmarshaling to object: %v", err)
+		return
+	}
+	if !reflect.DeepEqual(item, unmarshalledObj) {
+		t.Errorf("Object changed during JSON operations, diff: %v", diff.ObjectReflectDiff(item, unmarshalledObj))
+		return
+	}
+
+	newUnstr := make(map[string]interface{})
+	err = DefaultConverter.ToUnstructured(item, &newUnstr)
+	if err != nil {
+		t.Errorf("ToUnstructured failed: %v", err)
+		return
+	}
+
+	newObj := reflect.New(reflect.TypeOf(item).Elem()).Interface().(runtime.Object)
+	err = DefaultConverter.FromUnstructured(newUnstr, newObj)
+	if err != nil {
+		t.Errorf("FromUnstructured failed: %v", err)
+		return
+	}
+
+	if !reflect.DeepEqual(item, newObj) {
+		t.Errorf("Object changed, diff: %v", diff.ObjectReflectDiff(item, newObj))
+	}
+}
+
+func TestRoundTrip(t *testing.T) {
+	intVal := int64(42)
+	testCases := []struct {
+		obj runtime.Object
+	}{
+		{
+			// This (among others) tests nil map, slice and pointer.
+			obj: &C{
+				C: "ccc",
+			},
+		},
+		{
+			// This (among others) tests empty map and slice.
+			obj: &C{
+				A: []A{},
+				C: "ccc",
+				E: map[string]int{},
+				I: []interface{}{},
+			},
+		},
+		{
+			obj: &C{
+				A: []A{
+					{
+						A: 1,
+						B: "11",
+						C: true,
+					},
+					{
+						A: 2,
+						B: "22",
+						C: false,
+					},
+				},
+				B: B{
+					A: A{
+						A: 3,
+						B: "33",
+					},
+					B: "bbb",
+					C: map[string]string{
+						"k1": "v1",
+						"k2": "v2",
+					},
+					D: []string{"s1", "s2"},
+				},
+				C: "ccc",
+				D: &intVal,
+				E: map[string]int{
+					"k1": 1,
+					"k2": 2,
+				},
+				F: []bool{true, false, false},
+				G: []int{1, 2, 5},
+				H: 3.3,
+				I: []interface{}{nil, nil, nil},
+			},
+		},
+		{
+			// Test slice of interface{} with empty slices.
+			obj: &D{
+				A: []interface{}{[]interface{}{}, []interface{}{}},
+			},
+		},
+		{
+			// Test slice of interface{} with different values.
+			obj: &D{
+				A: []interface{}{3.0, "3.0", nil},
+			},
+		},
+	}
+
+	for i := range testCases {
+		doRoundTrip(t, testCases[i].obj)
+		if t.Failed() {
+			break
+		}
+	}
+}
+
+// Verifies that:
+// 1) serialized json -> object
+// 2) serialized json -> map[string]interface{} -> object
+// produces the same object.
+func doUnrecognized(t *testing.T, jsonData string, item runtime.Object, expectedErr error) {
+	unmarshalledObj := reflect.New(reflect.TypeOf(item).Elem()).Interface()
+	err := json.Unmarshal([]byte(jsonData), &unmarshalledObj)
+	if (err != nil) != (expectedErr != nil) {
+		t.Errorf("Unexpected error when unmarshaling to object: %v, expected: %v", err, expectedErr)
+		return
+	}
+
+	unstr := make(map[string]interface{})
+	err = json.Unmarshal([]byte(jsonData), &unstr)
+	if err != nil {
+		t.Errorf("Error when unmarshaling to unstructured: %v", err)
+		return
+	}
+	newObj := reflect.New(reflect.TypeOf(item).Elem()).Interface().(runtime.Object)
+	err = DefaultConverter.FromUnstructured(unstr, newObj)
+	if (err != nil) != (expectedErr != nil) {
+		t.Errorf("Unexpected error in FromUnstructured: %v, expected: %v", err, expectedErr)
+	}
+
+	if expectedErr == nil && !reflect.DeepEqual(unmarshalledObj, newObj) {
+		t.Errorf("Object changed, diff: %v", diff.ObjectReflectDiff(unmarshalledObj, newObj))
+	}
+}
+
+func TestUnrecognized(t *testing.T) {
+	testCases := []struct {
+		data string
+		obj  runtime.Object
+		err  error
+	}{
+		{
+			data: "{\"da\":[3.0,\"3.0\",null]}",
+			obj:  &D{},
+		},
+		{
+			data: "{\"ea\":[3.0,\"3.0\",null]}",
+			obj:  &E{},
+		},
+		{
+			data: "{\"ea\":[null,null,null]}",
+			obj:  &E{},
+		},
+		{
+			data: "{\"ea\":[[],[null]]}",
+			obj:  &E{},
+		},
+		{
+			data: "{\"ea\":{\"a\":[],\"b\":null}}",
+			obj:  &E{},
+		},
+		{
+			data: "{\"fa\":\"fa\",\"fb\":{\"a\":\"a\"}}",
+			obj:  &F{},
+		},
+		{
+			data: "{\"fa\":\"fa\",\"fb\":{\"a\":null}}",
+			obj:  &F{},
+		},
+		{
+			data: "{\"fc\":[null]}",
+			obj:  &F{},
+		},
+		{
+			data: "{\"fc\":[{\"aa\":123,\"ab\":\"bbb\"}]}",
+			obj:  &F{},
+		},
+		{
+			// Only unknown fields
+			data: "{\"fx\":[{\"aa\":123,\"ab\":\"bbb\"}],\"fz\":123}",
+			obj:  &F{},
+		},
+		{
+			data: "{\"fc\":[{\"aa\":\"aaa\",\"ab\":\"bbb\"}]}",
+			obj:  &F{},
+			err:  fmt.Errorf("json: cannot unmarshal string into Go value of type int"),
+		},
+		{
+			data: "{\"fd\":123,\"fe\":3.5}",
+			obj:  &F{},
+		},
+		{
+			data: "{\"ff\":[\"abc\"],\"fg\":[123],\"fh\":[true,false]}",
+			obj:  &F{},
+		},
+		{
+			// Invalid string data
+			data: "{\"fa\":123}",
+			obj:  &F{},
+			err:  fmt.Errorf("json: cannot unmarshal number into Go value of type string"),
+		},
+		{
+			// Invalid string data
+			data: "{\"fa\":13.5}",
+			obj:  &F{},
+			err:  fmt.Errorf("json: cannot unmarshal number into Go value of type string"),
+		},
+		{
+			// Invalid string data
+			data: "{\"fa\":true}",
+			obj:  &F{},
+			err:  fmt.Errorf("json: cannot unmarshal bool into Go value of type string"),
+		},
+		{
+			// Invalid []string data
+			data: "{\"ff\":123}",
+			obj:  &F{},
+			err:  fmt.Errorf("json: cannot unmarshal number into Go value of type []string"),
+		},
+		{
+			// Invalid []string data
+			data: "{\"ff\":3.5}",
+			obj:  &F{},
+			err:  fmt.Errorf("json: cannot unmarshal number into Go value of type []string"),
+		},
+		{
+			// Invalid []string data
+			data: "{\"ff\":[123,345]}",
+			obj:  &F{},
+			err:  fmt.Errorf("json: cannot unmarshal number into Go value of type string"),
+		},
+		{
+			// Invalid []int data
+			data: "{\"fg\":123}",
+			obj:  &F{},
+			err:  fmt.Errorf("json: cannot unmarshal number into Go value of type []int"),
+		},
+		{
+			// Invalid []int data
+			data: "{\"fg\":\"abc\"}",
+			obj:  &F{},
+			err:  fmt.Errorf("json: cannot unmarshal string into Go value of type []int"),
+		},
+		{
+			// Invalid []int data
+			data: "{\"fg\":[\"abc\"]}",
+			obj:  &F{},
+			err:  fmt.Errorf("json: cannot unmarshal string into Go value of type int"),
+		},
+		{
+			// Invalid []int data
+			data: "{\"fg\":[3.5]}",
+			obj:  &F{},
+			err:  fmt.Errorf("json: cannot unmarshal number 3.5 into Go value of type int"),
+		},
+		{
+			// Invalid []int data
+			data: "{\"fg\":[true,false]}",
+			obj:  &F{},
+			err:  fmt.Errorf("json: cannot unmarshal number 3.5 into Go value of type int"),
+		},
+		{
+			// Invalid []bool data
+			data: "{\"fh\":123}",
+			obj:  &F{},
+			err:  fmt.Errorf("json: cannot unmarshal number into Go value of type []bool"),
+		},
+		{
+			// Invalid []bool data
+			data: "{\"fh\":\"abc\"}",
+			obj:  &F{},
+			err:  fmt.Errorf("json: cannot unmarshal string into Go value of type []bool"),
+		},
+		{
+			// Invalid []bool data
+			data: "{\"fh\":[\"abc\"]}",
+			obj:  &F{},
+			err:  fmt.Errorf("json: cannot unmarshal string into Go value of type bool"),
+		},
+		{
+			// Invalid []bool data
+			data: "{\"fh\":[3.5]}",
+			obj:  &F{},
+			err:  fmt.Errorf("json: cannot unmarshal number into Go value of type bool"),
+		},
+		{
+			// Invalid []bool data
+			data: "{\"fh\":[123]}",
+			obj:  &F{},
+			err:  fmt.Errorf("json: cannot unmarshal number into Go value of type bool"),
+		},
+		{
+			// Invalid []float data
+			data: "{\"fi\":123}",
+			obj:  &F{},
+			err:  fmt.Errorf("json: cannot unmarshal number into Go value of type []float32"),
+		},
+		{
+			// Invalid []float data
+			data: "{\"fi\":\"abc\"}",
+			obj:  &F{},
+			err:  fmt.Errorf("json: cannot unmarshal string into Go value of type []float32"),
+		},
+		{
+			// Invalid []float data
+			data: "{\"fi\":[\"abc\"]}",
+			obj:  &F{},
+			err:  fmt.Errorf("json: cannot unmarshal string into Go value of type float32"),
+		},
+		{
+			// Invalid []float data
+			data: "{\"fi\":[true]}",
+			obj:  &F{},
+			err:  fmt.Errorf("json: cannot unmarshal bool into Go value of type float32"),
+		},
+	}
+
+	for i := range testCases {
+		doUnrecognized(t, testCases[i].data, testCases[i].obj, testCases[i].err)
+		if t.Failed() {
+			break
+		}
+	}
+}
+
+func TestFloatIntConversion(t *testing.T) {
+	unstr := map[string]interface{}{"fd": float64(3)}
+
+	var obj F
+	if err := DefaultConverter.FromUnstructured(unstr, &obj); err != nil {
+		t.Errorf("Unexpected error in FromUnstructured: %v", err)
+	}
+
+	data, err := json.Marshal(unstr)
+	if err != nil {
+		t.Fatalf("Error when marshaling unstructured: %v", err)
+	}
+	var unmarshalled F
+	if err := json.Unmarshal(data, &unmarshalled); err != nil {
+		t.Fatalf("Error when unmarshaling to object: %v", err)
+	}
+
+	if !reflect.DeepEqual(obj, unmarshalled) {
+		t.Errorf("Incorrect conversion, diff: %v", diff.ObjectReflectDiff(obj, unmarshalled))
+	}
+}

vendor/k8s.io/apimachinery/pkg/conversion/unstructured/doc.go

@@ -0,0 +1,19 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+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 unstructured provides conversion from runtime objects
+// to map[string]interface{} representation.
+package unstructured // import "k8s.io/apimachinery/pkg/conversion/unstructured"