Switch to github.com/golang/dep for vendoring

Signed-off-by: Mrunal Patel <mrunalp@gmail.com>

vendor/k8s.io/client-go/testing/fixture.go

@@ -0,0 +1,518 @@
+/*
+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 testing
+
+import (
+	"fmt"
+	"sync"
+
+	"k8s.io/apimachinery/pkg/api/errors"
+	"k8s.io/apimachinery/pkg/api/meta"
+	"k8s.io/apimachinery/pkg/apimachinery/registered"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"k8s.io/apimachinery/pkg/watch"
+	restclient "k8s.io/client-go/rest"
+)
+
+// ObjectTracker keeps track of objects. It is intended to be used to
+// fake calls to a server by returning objects based on their kind,
+// namespace and name.
+type ObjectTracker interface {
+	// Add adds an object to the tracker. If object being added
+	// is a list, its items are added separately.
+	Add(obj runtime.Object) error
+
+	// Get retrieves the object by its kind, namespace and name.
+	Get(gvk schema.GroupVersionKind, ns, name string) (runtime.Object, error)
+
+	// Create adds an object to the tracker in the specified namespace.
+	Create(obj runtime.Object, ns string) error
+
+	// Update updates an existing object in the tracker in the specified namespace.
+	Update(obj runtime.Object, ns string) error
+
+	// List retrieves all objects of a given kind in the given
+	// namespace. Only non-List kinds are accepted.
+	List(gvk schema.GroupVersionKind, ns string) (runtime.Object, error)
+
+	// Delete deletes an existing object from the tracker. If object
+	// didn't exist in the tracker prior to deletion, Delete returns
+	// no error.
+	Delete(gvk schema.GroupVersionKind, ns, name string) error
+}
+
+// ObjectScheme abstracts the implementation of common operations on objects.
+type ObjectScheme interface {
+	runtime.ObjectCreater
+	runtime.ObjectCopier
+	runtime.ObjectTyper
+}
+
+// ObjectReaction returns a ReactionFunc that applies core.Action to
+// the given tracker.
+func ObjectReaction(tracker ObjectTracker, mapper meta.RESTMapper) ReactionFunc {
+	return func(action Action) (bool, runtime.Object, error) {
+		ns := action.GetNamespace()
+		gvr := action.GetResource()
+
+		gvk, err := mapper.KindFor(gvr)
+		if err != nil {
+			return false, nil, fmt.Errorf("error getting kind for resource %q: %s", gvr, err)
+		}
+
+		// This is a temporary fix. Because there is no internal resource, so
+		// the caller has no way to express that it expects to get an internal
+		// kind back. A more proper fix will be directly specify the Kind when
+		// build the action.
+		gvk.Version = gvr.Version
+		if len(gvk.Version) == 0 {
+			gvk.Version = runtime.APIVersionInternal
+		}
+
+		// Here and below we need to switch on implementation types,
+		// not on interfaces, as some interfaces are identical
+		// (e.g. UpdateAction and CreateAction), so if we use them,
+		// updates and creates end up matching the same case branch.
+		switch action := action.(type) {
+
+		case ListActionImpl:
+			obj, err := tracker.List(gvk, ns)
+			return true, obj, err
+
+		case GetActionImpl:
+			obj, err := tracker.Get(gvk, ns, action.GetName())
+			return true, obj, err
+
+		case CreateActionImpl:
+			objMeta, err := meta.Accessor(action.GetObject())
+			if err != nil {
+				return true, nil, err
+			}
+			if action.GetSubresource() == "" {
+				err = tracker.Create(action.GetObject(), ns)
+			} else {
+				// TODO: Currently we're handling subresource creation as an update
+				// on the enclosing resource. This works for some subresources but
+				// might not be generic enough.
+				err = tracker.Update(action.GetObject(), ns)
+			}
+			if err != nil {
+				return true, nil, err
+			}
+			obj, err := tracker.Get(gvk, ns, objMeta.GetName())
+			return true, obj, err
+
+		case UpdateActionImpl:
+			objMeta, err := meta.Accessor(action.GetObject())
+			if err != nil {
+				return true, nil, err
+			}
+			err = tracker.Update(action.GetObject(), ns)
+			if err != nil {
+				return true, nil, err
+			}
+			obj, err := tracker.Get(gvk, ns, objMeta.GetName())
+			return true, obj, err
+
+		case DeleteActionImpl:
+			err := tracker.Delete(gvk, ns, action.GetName())
+			if err != nil {
+				return true, nil, err
+			}
+			return true, nil, nil
+
+		default:
+			return false, nil, fmt.Errorf("no reaction implemented for %s", action)
+		}
+	}
+}
+
+type tracker struct {
+	registry *registered.APIRegistrationManager
+	scheme   ObjectScheme
+	decoder  runtime.Decoder
+	lock     sync.RWMutex
+	objects  map[schema.GroupVersionKind][]runtime.Object
+}
+
+var _ ObjectTracker = &tracker{}
+
+// NewObjectTracker returns an ObjectTracker that can be used to keep track
+// of objects for the fake clientset. Mostly useful for unit tests.
+func NewObjectTracker(registry *registered.APIRegistrationManager, scheme ObjectScheme, decoder runtime.Decoder) ObjectTracker {
+	return &tracker{
+		registry: registry,
+		scheme:   scheme,
+		decoder:  decoder,
+		objects:  make(map[schema.GroupVersionKind][]runtime.Object),
+	}
+}
+
+func (t *tracker) List(gvk schema.GroupVersionKind, ns string) (runtime.Object, error) {
+	// Heuristic for list kind: original kind + List suffix. Might
+	// not always be true but this tracker has a pretty limited
+	// understanding of the actual API model.
+	listGVK := gvk
+	listGVK.Kind = listGVK.Kind + "List"
+
+	list, err := t.scheme.New(listGVK)
+	if err != nil {
+		return nil, err
+	}
+
+	if !meta.IsListType(list) {
+		return nil, fmt.Errorf("%q is not a list type", listGVK.Kind)
+	}
+
+	t.lock.RLock()
+	defer t.lock.RUnlock()
+
+	objs, ok := t.objects[gvk]
+	if !ok {
+		return list, nil
+	}
+
+	matchingObjs, err := filterByNamespaceAndName(objs, ns, "")
+	if err != nil {
+		return nil, err
+	}
+	if err := meta.SetList(list, matchingObjs); err != nil {
+		return nil, err
+	}
+	if list, err = t.scheme.Copy(list); err != nil {
+		return nil, err
+	}
+	return list, nil
+}
+
+func (t *tracker) Get(gvk schema.GroupVersionKind, ns, name string) (runtime.Object, error) {
+	if err := checkNamespace(t.registry, gvk, ns); err != nil {
+		return nil, err
+	}
+
+	errNotFound := errors.NewNotFound(schema.GroupResource{Group: gvk.Group, Resource: gvk.Kind}, name)
+
+	t.lock.RLock()
+	defer t.lock.RUnlock()
+
+	objs, ok := t.objects[gvk]
+	if !ok {
+		return nil, errNotFound
+	}
+
+	matchingObjs, err := filterByNamespaceAndName(objs, ns, name)
+	if err != nil {
+		return nil, err
+	}
+	if len(matchingObjs) == 0 {
+		return nil, errNotFound
+	}
+	if len(matchingObjs) > 1 {
+		return nil, fmt.Errorf("more than one object matched gvk %s, ns: %q name: %q", gvk, ns, name)
+	}
+
+	// Only one object should match in the tracker if it works
+	// correctly, as Add/Update methods enforce kind/namespace/name
+	// uniqueness.
+	obj, err := t.scheme.Copy(matchingObjs[0])
+	if err != nil {
+		return nil, err
+	}
+
+	if status, ok := obj.(*metav1.Status); ok {
+		if status.Details != nil {
+			status.Details.Kind = gvk.Kind
+		}
+		if status.Status != metav1.StatusSuccess {
+			return nil, &errors.StatusError{ErrStatus: *status}
+		}
+	}
+
+	return obj, nil
+}
+
+func (t *tracker) Add(obj runtime.Object) error {
+	if meta.IsListType(obj) {
+		return t.addList(obj, false)
+	}
+
+	objMeta, err := meta.Accessor(obj)
+	if err != nil {
+		return err
+	}
+	return t.add(obj, objMeta.GetNamespace(), false)
+}
+
+func (t *tracker) Create(obj runtime.Object, ns string) error {
+	return t.add(obj, ns, false)
+}
+
+func (t *tracker) Update(obj runtime.Object, ns string) error {
+	return t.add(obj, ns, true)
+}
+
+func (t *tracker) add(obj runtime.Object, ns string, replaceExisting bool) error {
+	gvks, _, err := t.scheme.ObjectKinds(obj)
+	if err != nil {
+		return err
+	}
+	if len(gvks) == 0 {
+		return fmt.Errorf("no registered kinds for %v", obj)
+	}
+
+	t.lock.Lock()
+	defer t.lock.Unlock()
+
+	for _, gvk := range gvks {
+		gr := schema.GroupResource{Group: gvk.Group, Resource: gvk.Kind}
+
+		// To avoid the object from being accidentally modified by caller
+		// after it's been added to the tracker, we always store the deep
+		// copy.
+		obj, err = t.scheme.Copy(obj)
+		if err != nil {
+			return err
+		}
+
+		if status, ok := obj.(*metav1.Status); ok && status.Details != nil {
+			gvk.Kind = status.Details.Kind
+		}
+
+		newMeta, err := meta.Accessor(obj)
+		if err != nil {
+			return err
+		}
+
+		// Propagate namespace to the new object if hasn't already been set.
+		if len(newMeta.GetNamespace()) == 0 {
+			newMeta.SetNamespace(ns)
+		}
+
+		if ns != newMeta.GetNamespace() {
+			msg := fmt.Sprintf("request namespace does not match object namespace, request: %q object: %q", ns, newMeta.GetNamespace())
+			return errors.NewBadRequest(msg)
+		}
+
+		if err := checkNamespace(t.registry, gvk, newMeta.GetNamespace()); err != nil {
+			return err
+		}
+
+		for i, existingObj := range t.objects[gvk] {
+			oldMeta, err := meta.Accessor(existingObj)
+			if err != nil {
+				return err
+			}
+			if oldMeta.GetNamespace() == newMeta.GetNamespace() && oldMeta.GetName() == newMeta.GetName() {
+				if replaceExisting {
+					t.objects[gvk][i] = obj
+					return nil
+				}
+				return errors.NewAlreadyExists(gr, newMeta.GetName())
+			}
+		}
+
+		if replaceExisting {
+			// Tried to update but no matching object was found.
+			return errors.NewNotFound(gr, newMeta.GetName())
+		}
+
+		t.objects[gvk] = append(t.objects[gvk], obj)
+	}
+
+	return nil
+}
+
+func (t *tracker) addList(obj runtime.Object, replaceExisting bool) error {
+	list, err := meta.ExtractList(obj)
+	if err != nil {
+		return err
+	}
+	errs := runtime.DecodeList(list, t.decoder)
+	if len(errs) > 0 {
+		return errs[0]
+	}
+	for _, obj := range list {
+		objMeta, err := meta.Accessor(obj)
+		if err != nil {
+			return err
+		}
+		err = t.add(obj, objMeta.GetNamespace(), replaceExisting)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (t *tracker) Delete(gvk schema.GroupVersionKind, ns, name string) error {
+	if err := checkNamespace(t.registry, gvk, ns); err != nil {
+		return err
+	}
+
+	t.lock.Lock()
+	defer t.lock.Unlock()
+
+	found := false
+
+	for i, existingObj := range t.objects[gvk] {
+		objMeta, err := meta.Accessor(existingObj)
+		if err != nil {
+			return err
+		}
+		if objMeta.GetNamespace() == ns && objMeta.GetName() == name {
+			t.objects[gvk] = append(t.objects[gvk][:i], t.objects[gvk][i+1:]...)
+			found = true
+			break
+		}
+	}
+
+	if found {
+		return nil
+	}
+
+	return errors.NewNotFound(schema.GroupResource{Group: gvk.Group, Resource: gvk.Kind}, name)
+}
+
+// filterByNamespaceAndName returns all objects in the collection that
+// match provided namespace and name. Empty namespace matches
+// non-namespaced objects.
+func filterByNamespaceAndName(objs []runtime.Object, ns, name string) ([]runtime.Object, error) {
+	var res []runtime.Object
+
+	for _, obj := range objs {
+		acc, err := meta.Accessor(obj)
+		if err != nil {
+			return nil, err
+		}
+		if ns != "" && acc.GetNamespace() != ns {
+			continue
+		}
+		if name != "" && acc.GetName() != name {
+			continue
+		}
+		res = append(res, obj)
+	}
+
+	return res, nil
+}
+
+// checkNamespace makes sure that the scope of gvk matches ns. It
+// returns an error if namespace is empty but gvk is a namespaced
+// kind, or if ns is non-empty and gvk is a namespaced kind.
+func checkNamespace(registry *registered.APIRegistrationManager, gvk schema.GroupVersionKind, ns string) error {
+	group, err := registry.Group(gvk.Group)
+	if err != nil {
+		return err
+	}
+	mapping, err := group.RESTMapper.RESTMapping(gvk.GroupKind(), gvk.Version)
+	if err != nil {
+		return err
+	}
+	switch mapping.Scope.Name() {
+	case meta.RESTScopeNameRoot:
+		if ns != "" {
+			return fmt.Errorf("namespace specified for a non-namespaced kind %s", gvk)
+		}
+	case meta.RESTScopeNameNamespace:
+		if ns == "" {
+			// Skipping this check for Events, since
+			// controllers emit events that have no namespace,
+			// even though Event is a namespaced resource.
+			if gvk.Kind != "Event" {
+				return fmt.Errorf("no namespace specified for a namespaced kind %s", gvk)
+			}
+		}
+	}
+
+	return nil
+}
+
+func DefaultWatchReactor(watchInterface watch.Interface, err error) WatchReactionFunc {
+	return func(action Action) (bool, watch.Interface, error) {
+		return true, watchInterface, err
+	}
+}
+
+// SimpleReactor is a Reactor.  Each reaction function is attached to a given verb,resource tuple.  "*" in either field matches everything for that value.
+// For instance, *,pods matches all verbs on pods.  This allows for easier composition of reaction functions
+type SimpleReactor struct {
+	Verb     string
+	Resource string
+
+	Reaction ReactionFunc
+}
+
+func (r *SimpleReactor) Handles(action Action) bool {
+	verbCovers := r.Verb == "*" || r.Verb == action.GetVerb()
+	if !verbCovers {
+		return false
+	}
+	resourceCovers := r.Resource == "*" || r.Resource == action.GetResource().Resource
+	if !resourceCovers {
+		return false
+	}
+
+	return true
+}
+
+func (r *SimpleReactor) React(action Action) (bool, runtime.Object, error) {
+	return r.Reaction(action)
+}
+
+// SimpleWatchReactor is a WatchReactor.  Each reaction function is attached to a given resource.  "*" matches everything for that value.
+// For instance, *,pods matches all verbs on pods.  This allows for easier composition of reaction functions
+type SimpleWatchReactor struct {
+	Resource string
+
+	Reaction WatchReactionFunc
+}
+
+func (r *SimpleWatchReactor) Handles(action Action) bool {
+	resourceCovers := r.Resource == "*" || r.Resource == action.GetResource().Resource
+	if !resourceCovers {
+		return false
+	}
+
+	return true
+}
+
+func (r *SimpleWatchReactor) React(action Action) (bool, watch.Interface, error) {
+	return r.Reaction(action)
+}
+
+// SimpleProxyReactor is a ProxyReactor.  Each reaction function is attached to a given resource.  "*" matches everything for that value.
+// For instance, *,pods matches all verbs on pods.  This allows for easier composition of reaction functions.
+type SimpleProxyReactor struct {
+	Resource string
+
+	Reaction ProxyReactionFunc
+}
+
+func (r *SimpleProxyReactor) Handles(action Action) bool {
+	resourceCovers := r.Resource == "*" || r.Resource == action.GetResource().Resource
+	if !resourceCovers {
+		return false
+	}
+
+	return true
+}
+
+func (r *SimpleProxyReactor) React(action Action) (bool, restclient.ResponseWrapper, error) {
+	return r.Reaction(action)
+}