Move Ingress godeps to vendor/

vendor/k8s.io/kubernetes/pkg/api/meta/meta.go

@@ -0,0 +1,521 @@
+/*
+Copyright 2014 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 meta
+
+import (
+	"fmt"
+	"reflect"
+
+	"k8s.io/kubernetes/pkg/api/unversioned"
+	"k8s.io/kubernetes/pkg/conversion"
+	"k8s.io/kubernetes/pkg/runtime"
+	"k8s.io/kubernetes/pkg/types"
+
+	"github.com/golang/glog"
+)
+
+// Accessor takes an arbitrary object pointer and returns meta.Interface.
+// obj must be a pointer to an API type. An error is returned if the minimum
+// required fields are missing. Fields that are not required return the default
+// value and are a no-op if set.
+func Accessor(obj interface{}) (Object, error) {
+	if oi, ok := obj.(ObjectMetaAccessor); ok {
+		if om := oi.GetObjectMeta(); om != nil {
+			return om, nil
+		}
+	}
+	// we may get passed an object that is directly portable to Object
+	if oi, ok := obj.(Object); ok {
+		return oi, nil
+	}
+
+	glog.V(4).Infof("Calling Accessor on non-internal object: %v", reflect.TypeOf(obj))
+	// legacy path for objects that do not implement Object and ObjectMetaAccessor via
+	// reflection - very slow code path.
+	v, err := conversion.EnforcePtr(obj)
+	if err != nil {
+		return nil, err
+	}
+	t := v.Type()
+	if v.Kind() != reflect.Struct {
+		return nil, fmt.Errorf("expected struct, but got %v: %v (%#v)", v.Kind(), t, v.Interface())
+	}
+
+	typeMeta := v.FieldByName("TypeMeta")
+	if !typeMeta.IsValid() {
+		return nil, fmt.Errorf("struct %v lacks embedded TypeMeta type", t)
+	}
+
+	a := &genericAccessor{}
+	if err := extractFromTypeMeta(typeMeta, a); err != nil {
+		return nil, fmt.Errorf("unable to find type fields on %#v: %v", typeMeta, err)
+	}
+
+	objectMeta := v.FieldByName("ObjectMeta")
+	if objectMeta.IsValid() {
+		// look for the ObjectMeta fields
+		if err := extractFromObjectMeta(objectMeta, a); err != nil {
+			return nil, fmt.Errorf("unable to find object fields on %#v: %v", objectMeta, err)
+		}
+	} else {
+		listMeta := v.FieldByName("ListMeta")
+		if listMeta.IsValid() {
+			// look for the ListMeta fields
+			if err := extractFromListMeta(listMeta, a); err != nil {
+				return nil, fmt.Errorf("unable to find list fields on %#v: %v", listMeta, err)
+			}
+		} else {
+			// look for the older TypeMeta with all metadata
+			if err := extractFromObjectMeta(typeMeta, a); err != nil {
+				return nil, fmt.Errorf("unable to find object fields on %#v: %v", typeMeta, err)
+			}
+		}
+	}
+
+	return a, nil
+}
+
+// TypeAccessor returns an interface that allows retrieving and modifying the APIVersion
+// and Kind of an in-memory internal object.
+// TODO: this interface is used to test code that does not have ObjectMeta or ListMeta
+// in round tripping (objects which can use apiVersion/kind, but do not fit the Kube
+// api conventions).
+func TypeAccessor(obj interface{}) (Type, error) {
+	if typed, ok := obj.(runtime.Object); ok {
+		return objectAccessor{typed}, nil
+	}
+	v, err := conversion.EnforcePtr(obj)
+	if err != nil {
+		return nil, err
+	}
+	t := v.Type()
+	if v.Kind() != reflect.Struct {
+		return nil, fmt.Errorf("expected struct, but got %v: %v (%#v)", v.Kind(), t, v.Interface())
+	}
+
+	typeMeta := v.FieldByName("TypeMeta")
+	if !typeMeta.IsValid() {
+		return nil, fmt.Errorf("struct %v lacks embedded TypeMeta type", t)
+	}
+	a := &genericAccessor{}
+	if err := extractFromTypeMeta(typeMeta, a); err != nil {
+		return nil, fmt.Errorf("unable to find type fields on %#v: %v", typeMeta, err)
+	}
+	return a, nil
+}
+
+type objectAccessor struct {
+	runtime.Object
+}
+
+func (obj objectAccessor) GetKind() string {
+	if gvk := obj.GetObjectKind().GroupVersionKind(); gvk != nil {
+		return gvk.Kind
+	}
+	return ""
+}
+
+func (obj objectAccessor) SetKind(kind string) {
+	gvk := obj.GetObjectKind().GroupVersionKind()
+	if gvk == nil {
+		gvk = &unversioned.GroupVersionKind{}
+	}
+	gvk.Kind = kind
+	obj.GetObjectKind().SetGroupVersionKind(gvk)
+}
+
+func (obj objectAccessor) GetAPIVersion() string {
+	if gvk := obj.GetObjectKind().GroupVersionKind(); gvk != nil {
+		return gvk.GroupVersion().String()
+	}
+	return ""
+}
+
+func (obj objectAccessor) SetAPIVersion(version string) {
+	gvk := obj.GetObjectKind().GroupVersionKind()
+	if gvk == nil {
+		gvk = &unversioned.GroupVersionKind{}
+	}
+	gv, err := unversioned.ParseGroupVersion(version)
+	if err != nil {
+		gv = unversioned.GroupVersion{Version: version}
+	}
+	gvk.Group, gvk.Version = gv.Group, gv.Version
+	obj.GetObjectKind().SetGroupVersionKind(gvk)
+}
+
+// NewAccessor returns a MetadataAccessor that can retrieve
+// or manipulate resource version on objects derived from core API
+// metadata concepts.
+func NewAccessor() MetadataAccessor {
+	return resourceAccessor{}
+}
+
+// resourceAccessor implements ResourceVersioner and SelfLinker.
+type resourceAccessor struct{}
+
+func (resourceAccessor) Kind(obj runtime.Object) (string, error) {
+	return objectAccessor{obj}.GetKind(), nil
+}
+
+func (resourceAccessor) SetKind(obj runtime.Object, kind string) error {
+	objectAccessor{obj}.SetKind(kind)
+	return nil
+}
+
+func (resourceAccessor) APIVersion(obj runtime.Object) (string, error) {
+	return objectAccessor{obj}.GetAPIVersion(), nil
+}
+
+func (resourceAccessor) SetAPIVersion(obj runtime.Object, version string) error {
+	objectAccessor{obj}.SetAPIVersion(version)
+	return nil
+}
+
+func (resourceAccessor) Namespace(obj runtime.Object) (string, error) {
+	accessor, err := Accessor(obj)
+	if err != nil {
+		return "", err
+	}
+	return accessor.GetNamespace(), nil
+}
+
+func (resourceAccessor) SetNamespace(obj runtime.Object, namespace string) error {
+	accessor, err := Accessor(obj)
+	if err != nil {
+		return err
+	}
+	accessor.SetNamespace(namespace)
+	return nil
+}
+
+func (resourceAccessor) Name(obj runtime.Object) (string, error) {
+	accessor, err := Accessor(obj)
+	if err != nil {
+		return "", err
+	}
+	return accessor.GetName(), nil
+}
+
+func (resourceAccessor) SetName(obj runtime.Object, name string) error {
+	accessor, err := Accessor(obj)
+	if err != nil {
+		return err
+	}
+	accessor.SetName(name)
+	return nil
+}
+
+func (resourceAccessor) GenerateName(obj runtime.Object) (string, error) {
+	accessor, err := Accessor(obj)
+	if err != nil {
+		return "", err
+	}
+	return accessor.GetGenerateName(), nil
+}
+
+func (resourceAccessor) SetGenerateName(obj runtime.Object, name string) error {
+	accessor, err := Accessor(obj)
+	if err != nil {
+		return err
+	}
+	accessor.SetGenerateName(name)
+	return nil
+}
+
+func (resourceAccessor) UID(obj runtime.Object) (types.UID, error) {
+	accessor, err := Accessor(obj)
+	if err != nil {
+		return "", err
+	}
+	return accessor.GetUID(), nil
+}
+
+func (resourceAccessor) SetUID(obj runtime.Object, uid types.UID) error {
+	accessor, err := Accessor(obj)
+	if err != nil {
+		return err
+	}
+	accessor.SetUID(uid)
+	return nil
+}
+
+func (resourceAccessor) SelfLink(obj runtime.Object) (string, error) {
+	accessor, err := Accessor(obj)
+	if err != nil {
+		return "", err
+	}
+	return accessor.GetSelfLink(), nil
+}
+
+func (resourceAccessor) SetSelfLink(obj runtime.Object, selfLink string) error {
+	accessor, err := Accessor(obj)
+	if err != nil {
+		return err
+	}
+	accessor.SetSelfLink(selfLink)
+	return nil
+}
+
+func (resourceAccessor) Labels(obj runtime.Object) (map[string]string, error) {
+	accessor, err := Accessor(obj)
+	if err != nil {
+		return nil, err
+	}
+	return accessor.GetLabels(), nil
+}
+
+func (resourceAccessor) SetLabels(obj runtime.Object, labels map[string]string) error {
+	accessor, err := Accessor(obj)
+	if err != nil {
+		return err
+	}
+	accessor.SetLabels(labels)
+	return nil
+}
+
+func (resourceAccessor) Annotations(obj runtime.Object) (map[string]string, error) {
+	accessor, err := Accessor(obj)
+	if err != nil {
+		return nil, err
+	}
+	return accessor.GetAnnotations(), nil
+}
+
+func (resourceAccessor) SetAnnotations(obj runtime.Object, annotations map[string]string) error {
+	accessor, err := Accessor(obj)
+	if err != nil {
+		return err
+	}
+	accessor.SetAnnotations(annotations)
+	return nil
+}
+
+func (resourceAccessor) ResourceVersion(obj runtime.Object) (string, error) {
+	accessor, err := Accessor(obj)
+	if err != nil {
+		return "", err
+	}
+	return accessor.GetResourceVersion(), nil
+}
+
+func (resourceAccessor) SetResourceVersion(obj runtime.Object, version string) error {
+	accessor, err := Accessor(obj)
+	if err != nil {
+		return err
+	}
+	accessor.SetResourceVersion(version)
+	return nil
+}
+
+// genericAccessor contains pointers to strings that can modify an arbitrary
+// struct and implements the Accessor interface.
+type genericAccessor struct {
+	namespace         *string
+	name              *string
+	generateName      *string
+	uid               *types.UID
+	apiVersion        *string
+	kind              *string
+	resourceVersion   *string
+	selfLink          *string
+	creationTimestamp *unversioned.Time
+	deletionTimestamp **unversioned.Time
+	labels            *map[string]string
+	annotations       *map[string]string
+}
+
+func (a genericAccessor) GetNamespace() string {
+	if a.namespace == nil {
+		return ""
+	}
+	return *a.namespace
+}
+
+func (a genericAccessor) SetNamespace(namespace string) {
+	if a.namespace == nil {
+		return
+	}
+	*a.namespace = namespace
+}
+
+func (a genericAccessor) GetName() string {
+	if a.name == nil {
+		return ""
+	}
+	return *a.name
+}
+
+func (a genericAccessor) SetName(name string) {
+	if a.name == nil {
+		return
+	}
+	*a.name = name
+}
+
+func (a genericAccessor) GetGenerateName() string {
+	if a.generateName == nil {
+		return ""
+	}
+	return *a.generateName
+}
+
+func (a genericAccessor) SetGenerateName(generateName string) {
+	if a.generateName == nil {
+		return
+	}
+	*a.generateName = generateName
+}
+
+func (a genericAccessor) GetUID() types.UID {
+	if a.uid == nil {
+		return ""
+	}
+	return *a.uid
+}
+
+func (a genericAccessor) SetUID(uid types.UID) {
+	if a.uid == nil {
+		return
+	}
+	*a.uid = uid
+}
+
+func (a genericAccessor) GetAPIVersion() string {
+	return *a.apiVersion
+}
+
+func (a genericAccessor) SetAPIVersion(version string) {
+	*a.apiVersion = version
+}
+
+func (a genericAccessor) GetKind() string {
+	return *a.kind
+}
+
+func (a genericAccessor) SetKind(kind string) {
+	*a.kind = kind
+}
+
+func (a genericAccessor) GetResourceVersion() string {
+	return *a.resourceVersion
+}
+
+func (a genericAccessor) SetResourceVersion(version string) {
+	*a.resourceVersion = version
+}
+
+func (a genericAccessor) GetSelfLink() string {
+	return *a.selfLink
+}
+
+func (a genericAccessor) SetSelfLink(selfLink string) {
+	*a.selfLink = selfLink
+}
+
+func (a genericAccessor) GetCreationTimestamp() unversioned.Time {
+	return *a.creationTimestamp
+}
+
+func (a genericAccessor) SetCreationTimestamp(timestamp unversioned.Time) {
+	*a.creationTimestamp = timestamp
+}
+
+func (a genericAccessor) GetDeletionTimestamp() *unversioned.Time {
+	return *a.deletionTimestamp
+}
+
+func (a genericAccessor) SetDeletionTimestamp(timestamp *unversioned.Time) {
+	*a.deletionTimestamp = timestamp
+}
+
+func (a genericAccessor) GetLabels() map[string]string {
+	if a.labels == nil {
+		return nil
+	}
+	return *a.labels
+}
+
+func (a genericAccessor) SetLabels(labels map[string]string) {
+	*a.labels = labels
+}
+
+func (a genericAccessor) GetAnnotations() map[string]string {
+	if a.annotations == nil {
+		return nil
+	}
+	return *a.annotations
+}
+
+func (a genericAccessor) SetAnnotations(annotations map[string]string) {
+	if a.annotations == nil {
+		emptyAnnotations := make(map[string]string)
+		a.annotations = &emptyAnnotations
+	}
+	*a.annotations = annotations
+}
+
+// extractFromTypeMeta extracts pointers to version and kind fields from an object
+func extractFromTypeMeta(v reflect.Value, a *genericAccessor) error {
+	if err := runtime.FieldPtr(v, "APIVersion", &a.apiVersion); err != nil {
+		return err
+	}
+	if err := runtime.FieldPtr(v, "Kind", &a.kind); err != nil {
+		return err
+	}
+	return nil
+}
+
+// extractFromObjectMeta extracts pointers to metadata fields from an object
+func extractFromObjectMeta(v reflect.Value, a *genericAccessor) error {
+	if err := runtime.FieldPtr(v, "Namespace", &a.namespace); err != nil {
+		return err
+	}
+	if err := runtime.FieldPtr(v, "Name", &a.name); err != nil {
+		return err
+	}
+	if err := runtime.FieldPtr(v, "GenerateName", &a.generateName); err != nil {
+		return err
+	}
+	if err := runtime.FieldPtr(v, "UID", &a.uid); err != nil {
+		return err
+	}
+	if err := runtime.FieldPtr(v, "ResourceVersion", &a.resourceVersion); err != nil {
+		return err
+	}
+	if err := runtime.FieldPtr(v, "SelfLink", &a.selfLink); err != nil {
+		return err
+	}
+	if err := runtime.FieldPtr(v, "Labels", &a.labels); err != nil {
+		return err
+	}
+	if err := runtime.FieldPtr(v, "Annotations", &a.annotations); err != nil {
+		return err
+	}
+	return nil
+}
+
+// extractFromObjectMeta extracts pointers to metadata fields from a list object
+func extractFromListMeta(v reflect.Value, a *genericAccessor) error {
+	if err := runtime.FieldPtr(v, "ResourceVersion", &a.resourceVersion); err != nil {
+		return err
+	}
+	if err := runtime.FieldPtr(v, "SelfLink", &a.selfLink); err != nil {
+		return err
+	}
+	return nil
+}