vendor files

vendor/k8s.io/kubernetes/pkg/registry/apps/statefulset/BUILD

@@ -0,0 +1,66 @@
+package(default_visibility = ["//visibility:public"])
+
+load(
+    "@io_bazel_rules_go//go:def.bzl",
+    "go_library",
+    "go_test",
+)
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "doc.go",
+        "registry.go",
+        "strategy.go",
+    ],
+    importpath = "k8s.io/kubernetes/pkg/registry/apps/statefulset",
+    deps = [
+        "//pkg/api/legacyscheme:go_default_library",
+        "//pkg/api/pod:go_default_library",
+        "//pkg/apis/apps:go_default_library",
+        "//pkg/apis/apps/validation:go_default_library",
+        "//vendor/k8s.io/api/apps/v1beta1:go_default_library",
+        "//vendor/k8s.io/api/apps/v1beta2:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/api/equality:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/api/errors:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/apis/meta/internalversion:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
+        "//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/validation/field:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/watch:go_default_library",
+        "//vendor/k8s.io/apiserver/pkg/endpoints/request:go_default_library",
+        "//vendor/k8s.io/apiserver/pkg/registry/rest:go_default_library",
+        "//vendor/k8s.io/apiserver/pkg/storage/names:go_default_library",
+    ],
+)
+
+go_test(
+    name = "go_default_test",
+    srcs = ["strategy_test.go"],
+    importpath = "k8s.io/kubernetes/pkg/registry/apps/statefulset",
+    library = ":go_default_library",
+    deps = [
+        "//pkg/apis/apps:go_default_library",
+        "//pkg/apis/core:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
+        "//vendor/k8s.io/apiserver/pkg/endpoints/request:go_default_library",
+        "//vendor/k8s.io/apiserver/pkg/registry/rest:go_default_library",
+    ],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [
+        ":package-srcs",
+        "//pkg/registry/apps/statefulset/storage:all-srcs",
+    ],
+    tags = ["automanaged"],
+)

vendor/k8s.io/kubernetes/pkg/registry/apps/statefulset/doc.go

@@ -0,0 +1,17 @@
+/*
+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 statefulset // import "k8s.io/kubernetes/pkg/registry/apps/statefulset"

vendor/k8s.io/kubernetes/pkg/registry/apps/statefulset/registry.go

@@ -0,0 +1,94 @@
+/*
+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 statefulset
+
+import (
+	"fmt"
+
+	"k8s.io/apimachinery/pkg/api/errors"
+	metainternalversion "k8s.io/apimachinery/pkg/apis/meta/internalversion"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/watch"
+	genericapirequest "k8s.io/apiserver/pkg/endpoints/request"
+	"k8s.io/apiserver/pkg/registry/rest"
+	"k8s.io/kubernetes/pkg/apis/apps"
+)
+
+// Registry is an interface for things that know how to store StatefulSets.
+type Registry interface {
+	ListStatefulSets(ctx genericapirequest.Context, options *metainternalversion.ListOptions) (*apps.StatefulSetList, error)
+	WatchStatefulSets(ctx genericapirequest.Context, options *metainternalversion.ListOptions) (watch.Interface, error)
+	GetStatefulSet(ctx genericapirequest.Context, statefulSetID string, options *metav1.GetOptions) (*apps.StatefulSet, error)
+	CreateStatefulSet(ctx genericapirequest.Context, statefulSet *apps.StatefulSet, createValidation rest.ValidateObjectFunc) (*apps.StatefulSet, error)
+	UpdateStatefulSet(ctx genericapirequest.Context, statefulSet *apps.StatefulSet, createValidation rest.ValidateObjectFunc, updateValidation rest.ValidateObjectUpdateFunc) (*apps.StatefulSet, error)
+	DeleteStatefulSet(ctx genericapirequest.Context, statefulSetID string) error
+}
+
+// storage puts strong typing around storage calls
+type storage struct {
+	rest.StandardStorage
+}
+
+// NewRegistry returns a new Registry interface for the given Storage. Any mismatched
+// types will panic.
+func NewRegistry(s rest.StandardStorage) Registry {
+	return &storage{s}
+}
+
+func (s *storage) ListStatefulSets(ctx genericapirequest.Context, options *metainternalversion.ListOptions) (*apps.StatefulSetList, error) {
+	if options != nil && options.FieldSelector != nil && !options.FieldSelector.Empty() {
+		return nil, fmt.Errorf("field selector not supported yet")
+	}
+	obj, err := s.List(ctx, options)
+	if err != nil {
+		return nil, err
+	}
+	return obj.(*apps.StatefulSetList), err
+}
+
+func (s *storage) WatchStatefulSets(ctx genericapirequest.Context, options *metainternalversion.ListOptions) (watch.Interface, error) {
+	return s.Watch(ctx, options)
+}
+
+func (s *storage) GetStatefulSet(ctx genericapirequest.Context, statefulSetID string, options *metav1.GetOptions) (*apps.StatefulSet, error) {
+	obj, err := s.Get(ctx, statefulSetID, options)
+	if err != nil {
+		return nil, errors.NewNotFound(apps.Resource("statefulsets/scale"), statefulSetID)
+	}
+	return obj.(*apps.StatefulSet), nil
+}
+
+func (s *storage) CreateStatefulSet(ctx genericapirequest.Context, statefulSet *apps.StatefulSet, createValidation rest.ValidateObjectFunc) (*apps.StatefulSet, error) {
+	obj, err := s.Create(ctx, statefulSet, rest.ValidateAllObjectFunc, false)
+	if err != nil {
+		return nil, err
+	}
+	return obj.(*apps.StatefulSet), nil
+}
+
+func (s *storage) UpdateStatefulSet(ctx genericapirequest.Context, statefulSet *apps.StatefulSet, createValidation rest.ValidateObjectFunc, updateValidation rest.ValidateObjectUpdateFunc) (*apps.StatefulSet, error) {
+	obj, _, err := s.Update(ctx, statefulSet.Name, rest.DefaultUpdatedObjectInfo(statefulSet), createValidation, updateValidation)
+	if err != nil {
+		return nil, err
+	}
+	return obj.(*apps.StatefulSet), nil
+}
+
+func (s *storage) DeleteStatefulSet(ctx genericapirequest.Context, statefulSetID string) error {
+	_, _, err := s.Delete(ctx, statefulSetID, nil)
+	return err
+}

vendor/k8s.io/kubernetes/pkg/registry/apps/statefulset/storage/BUILD

@@ -0,0 +1,71 @@
+package(default_visibility = ["//visibility:public"])
+
+load(
+    "@io_bazel_rules_go//go:def.bzl",
+    "go_library",
+    "go_test",
+)
+
+go_test(
+    name = "go_default_test",
+    srcs = ["storage_test.go"],
+    importpath = "k8s.io/kubernetes/pkg/registry/apps/statefulset/storage",
+    library = ":go_default_library",
+    deps = [
+        "//pkg/apis/apps:go_default_library",
+        "//pkg/apis/autoscaling:go_default_library",
+        "//pkg/apis/core:go_default_library",
+        "//pkg/registry/registrytest:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/api/equality:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/api/errors:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/fields:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/labels:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/util/diff:go_default_library",
+        "//vendor/k8s.io/apiserver/pkg/endpoints/request:go_default_library",
+        "//vendor/k8s.io/apiserver/pkg/registry/generic:go_default_library",
+        "//vendor/k8s.io/apiserver/pkg/registry/generic/testing:go_default_library",
+        "//vendor/k8s.io/apiserver/pkg/registry/rest:go_default_library",
+        "//vendor/k8s.io/apiserver/pkg/storage/etcd/testing:go_default_library",
+    ],
+)
+
+go_library(
+    name = "go_default_library",
+    srcs = ["storage.go"],
+    importpath = "k8s.io/kubernetes/pkg/registry/apps/statefulset/storage",
+    deps = [
+        "//pkg/apis/apps:go_default_library",
+        "//pkg/apis/apps/v1beta1:go_default_library",
+        "//pkg/apis/apps/v1beta2:go_default_library",
+        "//pkg/apis/autoscaling:go_default_library",
+        "//pkg/apis/autoscaling/v1:go_default_library",
+        "//pkg/apis/autoscaling/validation:go_default_library",
+        "//pkg/apis/extensions:go_default_library",
+        "//pkg/printers:go_default_library",
+        "//pkg/printers/internalversion:go_default_library",
+        "//pkg/printers/storage:go_default_library",
+        "//pkg/registry/apps/statefulset:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/api/errors:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/runtime/schema:go_default_library",
+        "//vendor/k8s.io/apiserver/pkg/endpoints/request:go_default_library",
+        "//vendor/k8s.io/apiserver/pkg/registry/generic:go_default_library",
+        "//vendor/k8s.io/apiserver/pkg/registry/generic/registry:go_default_library",
+        "//vendor/k8s.io/apiserver/pkg/registry/rest:go_default_library",
+    ],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+)

vendor/k8s.io/kubernetes/pkg/registry/apps/statefulset/storage/storage.go

@@ -0,0 +1,223 @@
+/*
+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 storage
+
+import (
+	"fmt"
+
+	"k8s.io/apimachinery/pkg/api/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	genericapirequest "k8s.io/apiserver/pkg/endpoints/request"
+	"k8s.io/apiserver/pkg/registry/generic"
+	genericregistry "k8s.io/apiserver/pkg/registry/generic/registry"
+	"k8s.io/apiserver/pkg/registry/rest"
+	"k8s.io/kubernetes/pkg/apis/apps"
+	appsv1beta1 "k8s.io/kubernetes/pkg/apis/apps/v1beta1"
+	appsv1beta2 "k8s.io/kubernetes/pkg/apis/apps/v1beta2"
+	"k8s.io/kubernetes/pkg/apis/autoscaling"
+	autoscalingv1 "k8s.io/kubernetes/pkg/apis/autoscaling/v1"
+	autoscalingvalidation "k8s.io/kubernetes/pkg/apis/autoscaling/validation"
+	"k8s.io/kubernetes/pkg/apis/extensions"
+	"k8s.io/kubernetes/pkg/printers"
+	printersinternal "k8s.io/kubernetes/pkg/printers/internalversion"
+	printerstorage "k8s.io/kubernetes/pkg/printers/storage"
+	"k8s.io/kubernetes/pkg/registry/apps/statefulset"
+)
+
+// StatefulSetStorage includes dummy storage for StatefulSets, and their Status and Scale subresource.
+type StatefulSetStorage struct {
+	StatefulSet *REST
+	Status      *StatusREST
+	Scale       *ScaleREST
+}
+
+func NewStorage(optsGetter generic.RESTOptionsGetter) StatefulSetStorage {
+	statefulSetRest, statefulSetStatusRest := NewREST(optsGetter)
+	statefulSetRegistry := statefulset.NewRegistry(statefulSetRest)
+
+	return StatefulSetStorage{
+		StatefulSet: statefulSetRest,
+		Status:      statefulSetStatusRest,
+		Scale:       &ScaleREST{registry: statefulSetRegistry},
+	}
+}
+
+// rest implements a RESTStorage for statefulsets against etcd
+type REST struct {
+	*genericregistry.Store
+}
+
+// NewREST returns a RESTStorage object that will work against statefulsets.
+func NewREST(optsGetter generic.RESTOptionsGetter) (*REST, *StatusREST) {
+	store := &genericregistry.Store{
+		NewFunc:                  func() runtime.Object { return &apps.StatefulSet{} },
+		NewListFunc:              func() runtime.Object { return &apps.StatefulSetList{} },
+		DefaultQualifiedResource: apps.Resource("statefulsets"),
+
+		CreateStrategy: statefulset.Strategy,
+		UpdateStrategy: statefulset.Strategy,
+		DeleteStrategy: statefulset.Strategy,
+
+		TableConvertor: printerstorage.TableConvertor{TablePrinter: printers.NewTablePrinter().With(printersinternal.AddHandlers)},
+	}
+	options := &generic.StoreOptions{RESTOptions: optsGetter}
+	if err := store.CompleteWithOptions(options); err != nil {
+		panic(err) // TODO: Propagate error up
+	}
+
+	statusStore := *store
+	statusStore.UpdateStrategy = statefulset.StatusStrategy
+	return &REST{store}, &StatusREST{store: &statusStore}
+}
+
+// Implement CategoriesProvider
+var _ rest.CategoriesProvider = &REST{}
+
+// Categories implements the CategoriesProvider interface. Returns a list of categories a resource is part of.
+func (r *REST) Categories() []string {
+	return []string{"all"}
+}
+
+// StatusREST implements the REST endpoint for changing the status of an statefulSet
+type StatusREST struct {
+	store *genericregistry.Store
+}
+
+func (r *StatusREST) New() runtime.Object {
+	return &apps.StatefulSet{}
+}
+
+// Get retrieves the object from the storage. It is required to support Patch.
+func (r *StatusREST) Get(ctx genericapirequest.Context, name string, options *metav1.GetOptions) (runtime.Object, error) {
+	return r.store.Get(ctx, name, options)
+}
+
+// Update alters the status subset of an object.
+func (r *StatusREST) Update(ctx genericapirequest.Context, name string, objInfo rest.UpdatedObjectInfo, createValidation rest.ValidateObjectFunc, updateValidation rest.ValidateObjectUpdateFunc) (runtime.Object, bool, error) {
+	return r.store.Update(ctx, name, objInfo, createValidation, updateValidation)
+}
+
+// Implement ShortNamesProvider
+var _ rest.ShortNamesProvider = &REST{}
+
+// ShortNames implements the ShortNamesProvider interface. Returns a list of short names for a resource.
+func (r *REST) ShortNames() []string {
+	return []string{"sts"}
+}
+
+type ScaleREST struct {
+	registry statefulset.Registry
+}
+
+// ScaleREST implements Patcher
+var _ = rest.Patcher(&ScaleREST{})
+var _ = rest.GroupVersionKindProvider(&ScaleREST{})
+
+func (r *ScaleREST) GroupVersionKind(containingGV schema.GroupVersion) schema.GroupVersionKind {
+	switch containingGV {
+	case appsv1beta1.SchemeGroupVersion:
+		return appsv1beta1.SchemeGroupVersion.WithKind("Scale")
+	case appsv1beta2.SchemeGroupVersion:
+		return appsv1beta2.SchemeGroupVersion.WithKind("Scale")
+	default:
+		return autoscalingv1.SchemeGroupVersion.WithKind("Scale")
+	}
+}
+
+// New creates a new Scale object
+func (r *ScaleREST) New() runtime.Object {
+	return &autoscaling.Scale{}
+}
+
+func (r *ScaleREST) Get(ctx genericapirequest.Context, name string, options *metav1.GetOptions) (runtime.Object, error) {
+	ss, err := r.registry.GetStatefulSet(ctx, name, options)
+	if err != nil {
+		return nil, err
+	}
+	scale, err := scaleFromStatefulSet(ss)
+	if err != nil {
+		return nil, errors.NewBadRequest(fmt.Sprintf("%v", err))
+	}
+	return scale, err
+}
+
+func (r *ScaleREST) Update(ctx genericapirequest.Context, name string, objInfo rest.UpdatedObjectInfo, createValidation rest.ValidateObjectFunc, updateValidation rest.ValidateObjectUpdateFunc) (runtime.Object, bool, error) {
+	ss, err := r.registry.GetStatefulSet(ctx, name, &metav1.GetOptions{})
+	if err != nil {
+		return nil, false, err
+	}
+
+	oldScale, err := scaleFromStatefulSet(ss)
+	if err != nil {
+		return nil, false, err
+	}
+
+	obj, err := objInfo.UpdatedObject(ctx, oldScale)
+	if err != nil {
+		return nil, false, err
+	}
+	if obj == nil {
+		return nil, false, errors.NewBadRequest(fmt.Sprintf("nil update passed to Scale"))
+	}
+	scale, ok := obj.(*autoscaling.Scale)
+	if !ok {
+		return nil, false, errors.NewBadRequest(fmt.Sprintf("wrong object passed to Scale update: %v", obj))
+	}
+
+	if errs := autoscalingvalidation.ValidateScale(scale); len(errs) > 0 {
+		return nil, false, errors.NewInvalid(extensions.Kind("Scale"), scale.Name, errs)
+	}
+
+	ss.Spec.Replicas = scale.Spec.Replicas
+	ss.ResourceVersion = scale.ResourceVersion
+	ss, err = r.registry.UpdateStatefulSet(ctx, ss, createValidation, updateValidation)
+	if err != nil {
+		return nil, false, err
+	}
+	newScale, err := scaleFromStatefulSet(ss)
+	if err != nil {
+		return nil, false, errors.NewBadRequest(fmt.Sprintf("%v", err))
+	}
+	return newScale, false, err
+}
+
+// scaleFromStatefulSet returns a scale subresource for a statefulset.
+func scaleFromStatefulSet(ss *apps.StatefulSet) (*autoscaling.Scale, error) {
+	selector, err := metav1.LabelSelectorAsSelector(ss.Spec.Selector)
+	if err != nil {
+		return nil, err
+	}
+	return &autoscaling.Scale{
+		// TODO: Create a variant of ObjectMeta type that only contains the fields below.
+		ObjectMeta: metav1.ObjectMeta{
+			Name:              ss.Name,
+			Namespace:         ss.Namespace,
+			UID:               ss.UID,
+			ResourceVersion:   ss.ResourceVersion,
+			CreationTimestamp: ss.CreationTimestamp,
+		},
+		Spec: autoscaling.ScaleSpec{
+			Replicas: ss.Spec.Replicas,
+		},
+		Status: autoscaling.ScaleStatus{
+			Replicas: ss.Status.Replicas,
+			Selector: selector.String(),
+		},
+	}, nil
+}

vendor/k8s.io/kubernetes/pkg/registry/apps/statefulset/storage/storage_test.go

@@ -0,0 +1,303 @@
+/*
+Copyright 2016 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 storage
+
+import (
+	"testing"
+
+	apiequality "k8s.io/apimachinery/pkg/api/equality"
+	"k8s.io/apimachinery/pkg/api/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/fields"
+	"k8s.io/apimachinery/pkg/labels"
+	"k8s.io/apimachinery/pkg/util/diff"
+	genericapirequest "k8s.io/apiserver/pkg/endpoints/request"
+	"k8s.io/apiserver/pkg/registry/generic"
+	genericregistrytest "k8s.io/apiserver/pkg/registry/generic/testing"
+	"k8s.io/apiserver/pkg/registry/rest"
+	etcdtesting "k8s.io/apiserver/pkg/storage/etcd/testing"
+	"k8s.io/kubernetes/pkg/apis/apps"
+	"k8s.io/kubernetes/pkg/apis/autoscaling"
+	api "k8s.io/kubernetes/pkg/apis/core"
+	"k8s.io/kubernetes/pkg/registry/registrytest"
+)
+
+// TODO: allow for global factory override
+func newStorage(t *testing.T) (StatefulSetStorage, *etcdtesting.EtcdTestServer) {
+	etcdStorage, server := registrytest.NewEtcdStorage(t, apps.GroupName)
+	restOptions := generic.RESTOptions{StorageConfig: etcdStorage, Decorator: generic.UndecoratedStorage, DeleteCollectionWorkers: 1, ResourcePrefix: "statefulsets"}
+	storage := NewStorage(restOptions)
+	return storage, server
+}
+
+// createStatefulSet is a helper function that returns a StatefulSet with the updated resource version.
+func createStatefulSet(storage *REST, ps apps.StatefulSet, t *testing.T) (apps.StatefulSet, error) {
+	ctx := genericapirequest.WithNamespace(genericapirequest.NewContext(), ps.Namespace)
+	obj, err := storage.Create(ctx, &ps, rest.ValidateAllObjectFunc, false)
+	if err != nil {
+		t.Errorf("Failed to create StatefulSet, %v", err)
+	}
+	newPS := obj.(*apps.StatefulSet)
+	return *newPS, nil
+}
+
+func validNewStatefulSet() *apps.StatefulSet {
+	return &apps.StatefulSet{
+		ObjectMeta: metav1.ObjectMeta{
+			Name:      "foo",
+			Namespace: metav1.NamespaceDefault,
+			Labels:    map[string]string{"a": "b"},
+		},
+		Spec: apps.StatefulSetSpec{
+			PodManagementPolicy: apps.OrderedReadyPodManagement,
+			Selector:            &metav1.LabelSelector{MatchLabels: map[string]string{"a": "b"}},
+			Template: api.PodTemplateSpec{
+				ObjectMeta: metav1.ObjectMeta{
+					Labels: map[string]string{"a": "b"},
+				},
+				Spec: api.PodSpec{
+					Containers: []api.Container{
+						{
+							Name:            "test",
+							Image:           "test_image",
+							ImagePullPolicy: api.PullIfNotPresent,
+						},
+					},
+					RestartPolicy: api.RestartPolicyAlways,
+					DNSPolicy:     api.DNSClusterFirst,
+				},
+			},
+			Replicas:       7,
+			UpdateStrategy: apps.StatefulSetUpdateStrategy{Type: apps.RollingUpdateStatefulSetStrategyType},
+		},
+		Status: apps.StatefulSetStatus{},
+	}
+}
+
+var validStatefulSet = *validNewStatefulSet()
+
+func TestCreate(t *testing.T) {
+	storage, server := newStorage(t)
+	defer server.Terminate(t)
+	defer storage.StatefulSet.Store.DestroyFunc()
+	test := genericregistrytest.New(t, storage.StatefulSet.Store)
+	ps := validNewStatefulSet()
+	ps.ObjectMeta = metav1.ObjectMeta{}
+	test.TestCreate(
+		// valid
+		ps,
+		// TODO: Add an invalid case when we have validation.
+	)
+}
+
+// TODO: Test updates to spec when we allow them.
+
+func TestStatusUpdate(t *testing.T) {
+	storage, server := newStorage(t)
+	defer server.Terminate(t)
+	defer storage.StatefulSet.Store.DestroyFunc()
+	ctx := genericapirequest.WithNamespace(genericapirequest.NewContext(), metav1.NamespaceDefault)
+	key := "/statefulsets/" + metav1.NamespaceDefault + "/foo"
+	validStatefulSet := validNewStatefulSet()
+	if err := storage.StatefulSet.Storage.Create(ctx, key, validStatefulSet, nil, 0); err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	update := apps.StatefulSet{
+		ObjectMeta: validStatefulSet.ObjectMeta,
+		Spec: apps.StatefulSetSpec{
+			Replicas: 7,
+		},
+		Status: apps.StatefulSetStatus{
+			Replicas: 7,
+		},
+	}
+
+	if _, _, err := storage.Status.Update(ctx, update.Name, rest.DefaultUpdatedObjectInfo(&update), rest.ValidateAllObjectFunc, rest.ValidateAllObjectUpdateFunc); err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	obj, err := storage.StatefulSet.Get(ctx, "foo", &metav1.GetOptions{})
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	ps := obj.(*apps.StatefulSet)
+	if ps.Spec.Replicas != 7 {
+		t.Errorf("we expected .spec.replicas to not be updated but it was updated to %v", ps.Spec.Replicas)
+	}
+	if ps.Status.Replicas != 7 {
+		t.Errorf("we expected .status.replicas to be updated to %d but it was %v", 7, ps.Status.Replicas)
+	}
+}
+
+func TestGet(t *testing.T) {
+	storage, server := newStorage(t)
+	defer server.Terminate(t)
+	defer storage.StatefulSet.Store.DestroyFunc()
+	test := genericregistrytest.New(t, storage.StatefulSet.Store)
+	test.TestGet(validNewStatefulSet())
+}
+
+func TestList(t *testing.T) {
+	storage, server := newStorage(t)
+	defer server.Terminate(t)
+	defer storage.StatefulSet.Store.DestroyFunc()
+	test := genericregistrytest.New(t, storage.StatefulSet.Store)
+	test.TestList(validNewStatefulSet())
+}
+
+func TestDelete(t *testing.T) {
+	storage, server := newStorage(t)
+	defer server.Terminate(t)
+	defer storage.StatefulSet.Store.DestroyFunc()
+	test := genericregistrytest.New(t, storage.StatefulSet.Store)
+	test.TestDelete(validNewStatefulSet())
+}
+
+func TestWatch(t *testing.T) {
+	storage, server := newStorage(t)
+	defer server.Terminate(t)
+	defer storage.StatefulSet.Store.DestroyFunc()
+	test := genericregistrytest.New(t, storage.StatefulSet.Store)
+	test.TestWatch(
+		validNewStatefulSet(),
+		// matching labels
+		[]labels.Set{
+			{"a": "b"},
+		},
+		// not matching labels
+		[]labels.Set{
+			{"a": "c"},
+			{"foo": "bar"},
+		},
+
+		// matching fields
+		[]fields.Set{
+			{"metadata.name": "foo"},
+		},
+		// not matching fields
+		[]fields.Set{
+			{"metadata.name": "bar"},
+		},
+	)
+}
+
+func TestCategories(t *testing.T) {
+	storage, server := newStorage(t)
+	defer server.Terminate(t)
+	defer storage.StatefulSet.Store.DestroyFunc()
+	expected := []string{"all"}
+	registrytest.AssertCategories(t, storage.StatefulSet, expected)
+}
+
+func TestShortNames(t *testing.T) {
+	storage, server := newStorage(t)
+	defer server.Terminate(t)
+	defer storage.StatefulSet.Store.DestroyFunc()
+	expected := []string{"sts"}
+	registrytest.AssertShortNames(t, storage.StatefulSet, expected)
+}
+
+func TestScaleGet(t *testing.T) {
+	storage, server := newStorage(t)
+	defer server.Terminate(t)
+	defer storage.StatefulSet.Store.DestroyFunc()
+
+	name := "foo"
+
+	var sts apps.StatefulSet
+	ctx := genericapirequest.WithNamespace(genericapirequest.NewContext(), metav1.NamespaceDefault)
+	key := "/statefulsets/" + metav1.NamespaceDefault + "/" + name
+	if err := storage.StatefulSet.Storage.Create(ctx, key, &validStatefulSet, &sts, 0); err != nil {
+		t.Fatalf("error setting new statefulset (key: %s) %v: %v", key, validStatefulSet, err)
+	}
+
+	selector, err := metav1.LabelSelectorAsSelector(validStatefulSet.Spec.Selector)
+	if err != nil {
+		t.Fatal(err)
+	}
+	want := &autoscaling.Scale{
+		ObjectMeta: metav1.ObjectMeta{
+			Name:              name,
+			Namespace:         metav1.NamespaceDefault,
+			UID:               sts.UID,
+			ResourceVersion:   sts.ResourceVersion,
+			CreationTimestamp: sts.CreationTimestamp,
+		},
+		Spec: autoscaling.ScaleSpec{
+			Replicas: validStatefulSet.Spec.Replicas,
+		},
+		Status: autoscaling.ScaleStatus{
+			Replicas: validStatefulSet.Status.Replicas,
+			Selector: selector.String(),
+		},
+	}
+	obj, err := storage.Scale.Get(ctx, name, &metav1.GetOptions{})
+	got := obj.(*autoscaling.Scale)
+	if err != nil {
+		t.Fatalf("error fetching scale for %s: %v", name, err)
+	}
+	if !apiequality.Semantic.DeepEqual(got, want) {
+		t.Errorf("unexpected scale: %s", diff.ObjectDiff(got, want))
+	}
+}
+
+func TestScaleUpdate(t *testing.T) {
+	storage, server := newStorage(t)
+	defer server.Terminate(t)
+	defer storage.StatefulSet.Store.DestroyFunc()
+
+	name := "foo"
+
+	var sts apps.StatefulSet
+	ctx := genericapirequest.WithNamespace(genericapirequest.NewContext(), metav1.NamespaceDefault)
+	key := "/statefulsets/" + metav1.NamespaceDefault + "/" + name
+	if err := storage.StatefulSet.Storage.Create(ctx, key, &validStatefulSet, &sts, 0); err != nil {
+		t.Fatalf("error setting new statefulset (key: %s) %v: %v", key, validStatefulSet, err)
+	}
+	replicas := 12
+	update := autoscaling.Scale{
+		ObjectMeta: metav1.ObjectMeta{
+			Name:      name,
+			Namespace: metav1.NamespaceDefault,
+		},
+		Spec: autoscaling.ScaleSpec{
+			Replicas: int32(replicas),
+		},
+	}
+
+	if _, _, err := storage.Scale.Update(ctx, update.Name, rest.DefaultUpdatedObjectInfo(&update), rest.ValidateAllObjectFunc, rest.ValidateAllObjectUpdateFunc); err != nil {
+		t.Fatalf("error updating scale %v: %v", update, err)
+	}
+
+	obj, err := storage.Scale.Get(ctx, name, &metav1.GetOptions{})
+	if err != nil {
+		t.Fatalf("error fetching scale for %s: %v", name, err)
+	}
+	scale := obj.(*autoscaling.Scale)
+	if scale.Spec.Replicas != int32(replicas) {
+		t.Errorf("wrong replicas count expected: %d got: %d", replicas, scale.Spec.Replicas)
+	}
+
+	update.ResourceVersion = sts.ResourceVersion
+	update.Spec.Replicas = 15
+
+	if _, _, err = storage.Scale.Update(ctx, update.Name, rest.DefaultUpdatedObjectInfo(&update), rest.ValidateAllObjectFunc, rest.ValidateAllObjectUpdateFunc); err != nil && !errors.IsConflict(err) {
+		t.Fatalf("unexpected error, expecting an update conflict but got %v", err)
+	}
+}
+
+// TODO: Test generation number.

vendor/k8s.io/kubernetes/pkg/registry/apps/statefulset/strategy.go

@@ -0,0 +1,139 @@
+/*
+Copyright 2014 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 statefulset
+
+import (
+	appsv1beta1 "k8s.io/api/apps/v1beta1"
+	appsv1beta2 "k8s.io/api/apps/v1beta2"
+	apiequality "k8s.io/apimachinery/pkg/api/equality"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"k8s.io/apimachinery/pkg/util/validation/field"
+	genericapirequest "k8s.io/apiserver/pkg/endpoints/request"
+	"k8s.io/apiserver/pkg/registry/rest"
+	"k8s.io/apiserver/pkg/storage/names"
+	"k8s.io/kubernetes/pkg/api/legacyscheme"
+	"k8s.io/kubernetes/pkg/api/pod"
+	"k8s.io/kubernetes/pkg/apis/apps"
+	"k8s.io/kubernetes/pkg/apis/apps/validation"
+)
+
+// statefulSetStrategy implements verification logic for Replication StatefulSets.
+type statefulSetStrategy struct {
+	runtime.ObjectTyper
+	names.NameGenerator
+}
+
+// Strategy is the default logic that applies when creating and updating Replication StatefulSet objects.
+var Strategy = statefulSetStrategy{legacyscheme.Scheme, names.SimpleNameGenerator}
+
+// DefaultGarbageCollectionPolicy returns OrphanDependents by default. For apps/v1, returns DeleteDependents.
+func (statefulSetStrategy) DefaultGarbageCollectionPolicy(ctx genericapirequest.Context) rest.GarbageCollectionPolicy {
+	if requestInfo, found := genericapirequest.RequestInfoFrom(ctx); found {
+		groupVersion := schema.GroupVersion{Group: requestInfo.APIGroup, Version: requestInfo.APIVersion}
+		switch groupVersion {
+		case appsv1beta1.SchemeGroupVersion, appsv1beta2.SchemeGroupVersion:
+			// for back compatibility
+			return rest.OrphanDependents
+		default:
+			return rest.DeleteDependents
+		}
+	}
+	return rest.OrphanDependents
+}
+
+// NamespaceScoped returns true because all StatefulSet' need to be within a namespace.
+func (statefulSetStrategy) NamespaceScoped() bool {
+	return true
+}
+
+// PrepareForCreate clears the status of an StatefulSet before creation.
+func (statefulSetStrategy) PrepareForCreate(ctx genericapirequest.Context, obj runtime.Object) {
+	statefulSet := obj.(*apps.StatefulSet)
+	// create cannot set status
+	statefulSet.Status = apps.StatefulSetStatus{}
+
+	statefulSet.Generation = 1
+
+	pod.DropDisabledAlphaFields(&statefulSet.Spec.Template.Spec)
+}
+
+// PrepareForUpdate clears fields that are not allowed to be set by end users on update.
+func (statefulSetStrategy) PrepareForUpdate(ctx genericapirequest.Context, obj, old runtime.Object) {
+	newStatefulSet := obj.(*apps.StatefulSet)
+	oldStatefulSet := old.(*apps.StatefulSet)
+	// Update is not allowed to set status
+	newStatefulSet.Status = oldStatefulSet.Status
+
+	pod.DropDisabledAlphaFields(&newStatefulSet.Spec.Template.Spec)
+	pod.DropDisabledAlphaFields(&oldStatefulSet.Spec.Template.Spec)
+
+	// Any changes to the spec increment the generation number, any changes to the
+	// status should reflect the generation number of the corresponding object.
+	// See metav1.ObjectMeta description for more information on Generation.
+	if !apiequality.Semantic.DeepEqual(oldStatefulSet.Spec, newStatefulSet.Spec) {
+		newStatefulSet.Generation = oldStatefulSet.Generation + 1
+	}
+
+}
+
+// Validate validates a new StatefulSet.
+func (statefulSetStrategy) Validate(ctx genericapirequest.Context, obj runtime.Object) field.ErrorList {
+	statefulSet := obj.(*apps.StatefulSet)
+	return validation.ValidateStatefulSet(statefulSet)
+}
+
+// Canonicalize normalizes the object after validation.
+func (statefulSetStrategy) Canonicalize(obj runtime.Object) {
+}
+
+// AllowCreateOnUpdate is false for StatefulSet; this means POST is needed to create one.
+func (statefulSetStrategy) AllowCreateOnUpdate() bool {
+	return false
+}
+
+// ValidateUpdate is the default update validation for an end user.
+func (statefulSetStrategy) ValidateUpdate(ctx genericapirequest.Context, obj, old runtime.Object) field.ErrorList {
+	validationErrorList := validation.ValidateStatefulSet(obj.(*apps.StatefulSet))
+	updateErrorList := validation.ValidateStatefulSetUpdate(obj.(*apps.StatefulSet), old.(*apps.StatefulSet))
+	return append(validationErrorList, updateErrorList...)
+}
+
+// AllowUnconditionalUpdate is the default update policy for StatefulSet objects.
+func (statefulSetStrategy) AllowUnconditionalUpdate() bool {
+	return true
+}
+
+type statefulSetStatusStrategy struct {
+	statefulSetStrategy
+}
+
+var StatusStrategy = statefulSetStatusStrategy{Strategy}
+
+// PrepareForUpdate clears fields that are not allowed to be set by end users on update of status
+func (statefulSetStatusStrategy) PrepareForUpdate(ctx genericapirequest.Context, obj, old runtime.Object) {
+	newStatefulSet := obj.(*apps.StatefulSet)
+	oldStatefulSet := old.(*apps.StatefulSet)
+	// status changes are not allowed to update spec
+	newStatefulSet.Spec = oldStatefulSet.Spec
+}
+
+// ValidateUpdate is the default update validation for an end user updating status
+func (statefulSetStatusStrategy) ValidateUpdate(ctx genericapirequest.Context, obj, old runtime.Object) field.ErrorList {
+	// TODO: Validate status updates.
+	return validation.ValidateStatefulSetStatusUpdate(obj.(*apps.StatefulSet), old.(*apps.StatefulSet))
+}

vendor/k8s.io/kubernetes/pkg/registry/apps/statefulset/strategy_test.go

@@ -0,0 +1,206 @@
+/*
+Copyright 2016 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 statefulset
+
+import (
+	"testing"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	genericapirequest "k8s.io/apiserver/pkg/endpoints/request"
+	"k8s.io/apiserver/pkg/registry/rest"
+	"k8s.io/kubernetes/pkg/apis/apps"
+	api "k8s.io/kubernetes/pkg/apis/core"
+)
+
+func TestStatefulSetStrategy(t *testing.T) {
+	ctx := genericapirequest.NewDefaultContext()
+	if !Strategy.NamespaceScoped() {
+		t.Errorf("StatefulSet must be namespace scoped")
+	}
+	if Strategy.AllowCreateOnUpdate() {
+		t.Errorf("StatefulSet should not allow create on update")
+	}
+
+	validSelector := map[string]string{"a": "b"}
+	validPodTemplate := api.PodTemplate{
+		Template: api.PodTemplateSpec{
+			ObjectMeta: metav1.ObjectMeta{
+				Labels: validSelector,
+			},
+			Spec: api.PodSpec{
+				RestartPolicy: api.RestartPolicyAlways,
+				DNSPolicy:     api.DNSClusterFirst,
+				Containers:    []api.Container{{Name: "abc", Image: "image", ImagePullPolicy: "IfNotPresent"}},
+			},
+		},
+	}
+	ps := &apps.StatefulSet{
+		ObjectMeta: metav1.ObjectMeta{Name: "abc", Namespace: metav1.NamespaceDefault},
+		Spec: apps.StatefulSetSpec{
+			PodManagementPolicy: apps.OrderedReadyPodManagement,
+			Selector:            &metav1.LabelSelector{MatchLabels: validSelector},
+			Template:            validPodTemplate.Template,
+			UpdateStrategy:      apps.StatefulSetUpdateStrategy{Type: apps.RollingUpdateStatefulSetStrategyType},
+		},
+		Status: apps.StatefulSetStatus{Replicas: 3},
+	}
+
+	Strategy.PrepareForCreate(ctx, ps)
+	if ps.Status.Replicas != 0 {
+		t.Error("StatefulSet should not allow setting status.replicas on create")
+	}
+	errs := Strategy.Validate(ctx, ps)
+	if len(errs) != 0 {
+		t.Errorf("unexpected error validating %v", errs)
+	}
+
+	// Just Spec.Replicas is allowed to change
+	validPs := &apps.StatefulSet{
+		ObjectMeta: metav1.ObjectMeta{Name: ps.Name, Namespace: ps.Namespace, ResourceVersion: "1", Generation: 1},
+		Spec: apps.StatefulSetSpec{
+			PodManagementPolicy: apps.OrderedReadyPodManagement,
+			Selector:            ps.Spec.Selector,
+			Template:            validPodTemplate.Template,
+			UpdateStrategy:      apps.StatefulSetUpdateStrategy{Type: apps.RollingUpdateStatefulSetStrategyType},
+		},
+		Status: apps.StatefulSetStatus{Replicas: 4},
+	}
+	Strategy.PrepareForUpdate(ctx, validPs, ps)
+	errs = Strategy.ValidateUpdate(ctx, validPs, ps)
+	if len(errs) != 0 {
+		t.Errorf("updating spec.Replicas is allowed on a statefulset: %v", errs)
+	}
+
+	validPs.Spec.Selector = &metav1.LabelSelector{MatchLabels: map[string]string{"a": "bar"}}
+	Strategy.PrepareForUpdate(ctx, validPs, ps)
+	errs = Strategy.ValidateUpdate(ctx, validPs, ps)
+	if len(errs) == 0 {
+		t.Errorf("expected a validation error since updates are disallowed on statefulsets.")
+	}
+}
+
+func TestStatefulsetDefaultGarbageCollectionPolicy(t *testing.T) {
+	// Make sure we correctly implement the interface.
+	// Otherwise a typo could silently change the default.
+	var gcds rest.GarbageCollectionDeleteStrategy = Strategy
+	tests := []struct {
+		requestInfo      genericapirequest.RequestInfo
+		expectedGCPolicy rest.GarbageCollectionPolicy
+		isNilRequestInfo bool
+	}{
+		{
+			genericapirequest.RequestInfo{
+				APIGroup:   "apps",
+				APIVersion: "v1beta1",
+				Resource:   "statefulsets",
+			},
+			rest.OrphanDependents,
+			false,
+		},
+		{
+			genericapirequest.RequestInfo{
+				APIGroup:   "apps",
+				APIVersion: "v1beta2",
+				Resource:   "statefulsets",
+			},
+			rest.OrphanDependents,
+			false,
+		},
+		{
+			genericapirequest.RequestInfo{
+				APIGroup:   "apps",
+				APIVersion: "v1",
+				Resource:   "statefulsets",
+			},
+			rest.DeleteDependents,
+			false,
+		},
+		{
+			expectedGCPolicy: rest.OrphanDependents,
+			isNilRequestInfo: true,
+		},
+	}
+
+	for _, test := range tests {
+		context := genericapirequest.NewContext()
+		if !test.isNilRequestInfo {
+			context = genericapirequest.WithRequestInfo(context, &test.requestInfo)
+		}
+		if got, want := gcds.DefaultGarbageCollectionPolicy(context), test.expectedGCPolicy; got != want {
+			t.Errorf("%s/%s: DefaultGarbageCollectionPolicy() = %#v, want %#v", test.requestInfo.APIGroup,
+				test.requestInfo.APIVersion, got, want)
+		}
+	}
+}
+
+func TestStatefulSetStatusStrategy(t *testing.T) {
+	ctx := genericapirequest.NewDefaultContext()
+	if !StatusStrategy.NamespaceScoped() {
+		t.Errorf("StatefulSet must be namespace scoped")
+	}
+	if StatusStrategy.AllowCreateOnUpdate() {
+		t.Errorf("StatefulSet should not allow create on update")
+	}
+	validSelector := map[string]string{"a": "b"}
+	validPodTemplate := api.PodTemplate{
+		Template: api.PodTemplateSpec{
+			ObjectMeta: metav1.ObjectMeta{
+				Labels: validSelector,
+			},
+			Spec: api.PodSpec{
+				RestartPolicy: api.RestartPolicyAlways,
+				DNSPolicy:     api.DNSClusterFirst,
+				Containers:    []api.Container{{Name: "abc", Image: "image", ImagePullPolicy: "IfNotPresent"}},
+			},
+		},
+	}
+	oldPS := &apps.StatefulSet{
+		ObjectMeta: metav1.ObjectMeta{Name: "abc", Namespace: metav1.NamespaceDefault, ResourceVersion: "10"},
+		Spec: apps.StatefulSetSpec{
+			Replicas:       3,
+			Selector:       &metav1.LabelSelector{MatchLabels: validSelector},
+			Template:       validPodTemplate.Template,
+			UpdateStrategy: apps.StatefulSetUpdateStrategy{Type: apps.RollingUpdateStatefulSetStrategyType},
+		},
+		Status: apps.StatefulSetStatus{
+			Replicas: 1,
+		},
+	}
+	newPS := &apps.StatefulSet{
+		ObjectMeta: metav1.ObjectMeta{Name: "abc", Namespace: metav1.NamespaceDefault, ResourceVersion: "9"},
+		Spec: apps.StatefulSetSpec{
+			Replicas:       1,
+			Selector:       &metav1.LabelSelector{MatchLabels: validSelector},
+			Template:       validPodTemplate.Template,
+			UpdateStrategy: apps.StatefulSetUpdateStrategy{Type: apps.RollingUpdateStatefulSetStrategyType},
+		},
+		Status: apps.StatefulSetStatus{
+			Replicas: 2,
+		},
+	}
+	StatusStrategy.PrepareForUpdate(ctx, newPS, oldPS)
+	if newPS.Status.Replicas != 2 {
+		t.Errorf("StatefulSet status updates should allow change of pods: %v", newPS.Status.Replicas)
+	}
+	if newPS.Spec.Replicas != 3 {
+		t.Errorf("StatefulSet status updates should not clobber spec: %v", newPS.Spec)
+	}
+	errs := StatusStrategy.ValidateUpdate(ctx, newPS, oldPS)
+	if len(errs) != 0 {
+		t.Errorf("unexpected error %v", errs)
+	}
+}