ConfigMap resource and its REST implementation

pkg/apis/extensions/register.go

@@ -65,6 +65,8 @@ func addKnownTypes() {
 		&Ingress{},
 		&IngressList{},
 		&api.ListOptions{},
+		&ConfigMap{},
+		&ConfigMapList{},
 	)
 }
 
@@ -86,3 +88,5 @@ func (obj *ThirdPartyResourceData) GetObjectKind() unversioned.ObjectKind      {
 func (obj *ThirdPartyResourceDataList) GetObjectKind() unversioned.ObjectKind  { return &obj.TypeMeta }
 func (obj *Ingress) GetObjectKind() unversioned.ObjectKind                     { return &obj.TypeMeta }
 func (obj *IngressList) GetObjectKind() unversioned.ObjectKind                 { return &obj.TypeMeta }
+func (obj *ConfigMap) GetObjectKind() unversioned.ObjectKind                   { return &obj.TypeMeta }
+func (obj *ConfigMapList) GetObjectKind() unversioned.ObjectKind               { return &obj.TypeMeta }

pkg/apis/extensions/types.go

@@ -691,3 +691,26 @@ const (
 	LabelSelectorOpExists       LabelSelectorOperator = "Exists"
 	LabelSelectorOpDoesNotExist LabelSelectorOperator = "DoesNotExist"
 )
+
+// ConfigMap holds configuration data for components or applications to consume.
+type ConfigMap struct {
+	unversioned.TypeMeta `json:",inline"`
+
+	// Standard object metadata; More info: http://releases.k8s.io/HEAD/docs/devel/api-conventions.md#metadata.
+	api.ObjectMeta `json:"metadata,omitempty"`
+
+	// Data contains the configuration data.
+	// Each key must be a valid DNS_SUBDOMAIN with an optional leading dot.
+	Data map[string]string `json:"data,omitempty"`
+}
+
+// ConfigMapList is a resource containing a list of ConfigMap objects.
+type ConfigMapList struct {
+	unversioned.TypeMeta `json:",inline"`
+
+	// More info: http://releases.k8s.io/HEAD/docs/devel/api-conventions.md#metadata
+	unversioned.ListMeta `json:"metadata,omitempty"`
+
+	// Items is the list of ConfigMaps.
+	Items []ConfigMap `json:"items,omitempty"`
+}

pkg/apis/extensions/v1beta1/defaults.go

@@ -118,5 +118,10 @@ func addDefaultingFuncs() {
 				obj.Spec.CPUUtilization = &CPUTargetUtilization{TargetPercentage: 80}
 			}
 		},
+		func(obj *ConfigMap) {
+			if obj.Data == nil {
+				obj.Data = make(map[string]string)
+			}
+		},
 	)
 }

pkg/apis/extensions/v1beta1/register.go

@@ -58,6 +58,8 @@ func addKnownTypes() {
 		&Ingress{},
 		&IngressList{},
 		&ListOptions{},
+		&ConfigMap{},
+		&ConfigMapList{},
 	)
 }
 
@@ -80,3 +82,5 @@ func (obj *ThirdPartyResourceDataList) GetObjectKind() unversioned.ObjectKind  {
 func (obj *Ingress) GetObjectKind() unversioned.ObjectKind                     { return &obj.TypeMeta }
 func (obj *IngressList) GetObjectKind() unversioned.ObjectKind                 { return &obj.TypeMeta }
 func (obj *ListOptions) GetObjectKind() unversioned.ObjectKind                 { return &obj.TypeMeta }
+func (obj *ConfigMap) GetObjectKind() unversioned.ObjectKind                   { return &obj.TypeMeta }
+func (obj *ConfigMapList) GetObjectKind() unversioned.ObjectKind               { return &obj.TypeMeta }

pkg/apis/extensions/v1beta1/types.go

@@ -719,3 +719,26 @@ const (
 	LabelSelectorOpExists       LabelSelectorOperator = "Exists"
 	LabelSelectorOpDoesNotExist LabelSelectorOperator = "DoesNotExist"
 )
+
+// ConfigMap holds configuration data for pods to consume.
+type ConfigMap struct {
+	unversioned.TypeMeta `json:",inline"`
+
+	// Standard object metadata; More info: http://releases.k8s.io/HEAD/docs/devel/api-conventions.md#metadata.
+	v1.ObjectMeta `json:"metadata,omitempty"`
+
+	// Data contains the configuration data.
+	// Each key must be a valid DNS_SUBDOMAIN with an optional leading dot.
+	Data map[string]string `json:"data,omitempty"`
+}
+
+// ConfigMapList is a resource containing a list of ConfigMap objects.
+type ConfigMapList struct {
+	unversioned.TypeMeta `json:",inline"`
+
+	// More info: http://releases.k8s.io/HEAD/docs/devel/api-conventions.md#metadata
+	unversioned.ListMeta `json:"metadata,omitempty"`
+
+	// Items is the list of ConfigMaps.
+	Items []ConfigMap `json:"items,omitempty"`
+}

pkg/apis/extensions/validation/validation.go

@@ -17,6 +17,7 @@ limitations under the License.
 package validation
 
 import (
+	"fmt"
 	"net"
 	"regexp"
 	"strconv"
@@ -593,3 +594,33 @@ func ValidateScale(scale *extensions.Scale) field.ErrorList {
 
 	return allErrs
 }
+
+// ValidateConfigMapName can be used to check whether the given ConfigMap name is valid.
+// Prefix indicates this name will be used as part of generation, in which case
+// trailing dashes are allowed.
+func ValidateConfigMapName(name string, prefix bool) (bool, string) {
+	return apivalidation.NameIsDNSSubdomain(name, prefix)
+}
+
+// ValidateConfigMap tests whether required fields in the ConfigMap are set.
+func ValidateConfigMap(cfg *extensions.ConfigMap) field.ErrorList {
+	allErrs := field.ErrorList{}
+	allErrs = append(allErrs, apivalidation.ValidateObjectMeta(&cfg.ObjectMeta, true, ValidateConfigMapName, field.NewPath("metadata"))...)
+
+	for key := range cfg.Data {
+		if !apivalidation.IsSecretKey(key) {
+			allErrs = append(allErrs, field.Invalid(field.NewPath("data").Key(key), key, fmt.Sprintf("must have at most %d characters and match regex %s", validation.DNS1123SubdomainMaxLength, apivalidation.SecretKeyFmt)))
+		}
+	}
+
+	return allErrs
+}
+
+// ValidateConfigMapUpdate tests if required fields in the ConfigMap are set.
+func ValidateConfigMapUpdate(newCfg, oldCfg *extensions.ConfigMap) field.ErrorList {
+	allErrs := field.ErrorList{}
+	allErrs = append(allErrs, apivalidation.ValidateObjectMetaUpdate(&newCfg.ObjectMeta, &oldCfg.ObjectMeta, field.NewPath("metadata"))...)
+	allErrs = append(allErrs, ValidateConfigMap(newCfg)...)
+
+	return allErrs
+}

pkg/apis/extensions/validation/validation_test.go

@@ -1300,3 +1300,105 @@ func newInt(val int) *int {
 	*p = val
 	return p
 }
+
+func TestValidateConfigMap(t *testing.T) {
+	newConfigMap := func(name, namespace string, data map[string]string) extensions.ConfigMap {
+		return extensions.ConfigMap{
+			ObjectMeta: api.ObjectMeta{
+				Name:      name,
+				Namespace: namespace,
+			},
+			Data: data,
+		}
+	}
+
+	var (
+		validConfigMap = newConfigMap("validname", "validns", map[string]string{"key": "value"})
+		maxKeyLength   = newConfigMap("validname", "validns", map[string]string{strings.Repeat("a", 253): "value"})
+
+		emptyName        = newConfigMap("", "validns", nil)
+		invalidName      = newConfigMap("NoUppercaseOrSpecialCharsLike=Equals", "validns", nil)
+		emptyNs          = newConfigMap("validname", "", nil)
+		invalidNs        = newConfigMap("validname", "NoUppercaseOrSpecialCharsLike=Equals", nil)
+		invalidKey       = newConfigMap("validname", "validns", map[string]string{"a..b": "value"})
+		leadingDotKey    = newConfigMap("validname", "validns", map[string]string{".ab": "value"})
+		dotKey           = newConfigMap("validname", "validns", map[string]string{".": "value"})
+		doubleDotKey     = newConfigMap("validname", "validns", map[string]string{"..": "value"})
+		overMaxKeyLength = newConfigMap("validname", "validns", map[string]string{strings.Repeat("a", 254): "value"})
+	)
+
+	tests := map[string]struct {
+		cfg     extensions.ConfigMap
+		isValid bool
+	}{
+		"valid":               {validConfigMap, true},
+		"max key length":      {maxKeyLength, true},
+		"leading dot key":     {leadingDotKey, true},
+		"empty name":          {emptyName, false},
+		"invalid name":        {invalidName, false},
+		"invalid key":         {invalidKey, false},
+		"empty namespace":     {emptyNs, false},
+		"invalid namespace":   {invalidNs, false},
+		"dot key":             {dotKey, false},
+		"double dot key":      {doubleDotKey, false},
+		"over max key length": {overMaxKeyLength, false},
+	}
+
+	for name, tc := range tests {
+		errs := ValidateConfigMap(&tc.cfg)
+		if tc.isValid && len(errs) > 0 {
+			t.Errorf("%v: unexpected error: %v", name, errs)
+		}
+		if !tc.isValid && len(errs) == 0 {
+			t.Errorf("%v: unexpected non-error", name)
+		}
+	}
+}
+
+func TestValidateConfigMapUpdate(t *testing.T) {
+	newConfigMap := func(version, name, namespace string, data map[string]string) extensions.ConfigMap {
+		return extensions.ConfigMap{
+			ObjectMeta: api.ObjectMeta{
+				Name:            name,
+				Namespace:       namespace,
+				ResourceVersion: version,
+			},
+			Data: data,
+		}
+	}
+
+	var (
+		validConfigMap = newConfigMap("1", "validname", "validns", map[string]string{"key": "value"})
+		noVersion      = newConfigMap("", "validname", "validns", map[string]string{"key": "value"})
+	)
+
+	cases := []struct {
+		name    string
+		newCfg  extensions.ConfigMap
+		oldCfg  extensions.ConfigMap
+		isValid bool
+	}{
+		{
+			name:    "valid",
+			newCfg:  validConfigMap,
+			oldCfg:  validConfigMap,
+			isValid: true,
+		},
+		{
+			name:    "invalid",
+			newCfg:  noVersion,
+			oldCfg:  validConfigMap,
+			isValid: false,
+		},
+	}
+
+	for _, tc := range cases {
+		errs := ValidateConfigMapUpdate(&tc.newCfg, &tc.oldCfg)
+		if tc.isValid && len(errs) > 0 {
+			t.Errorf("%v: unexpected error: %v", tc.name, errs)
+		}
+		if !tc.isValid && len(errs) == 0 {
+			t.Errorf("%v: unexpected non-error", tc.name)
+		}
+	}
+}

pkg/client/unversioned/configmap.go

@@ -0,0 +1,123 @@
+/*
+Copyright 2015 The Kubernetes Authors All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package unversioned
+
+import (
+	"k8s.io/kubernetes/pkg/api"
+	"k8s.io/kubernetes/pkg/apis/extensions"
+	"k8s.io/kubernetes/pkg/watch"
+)
+
+const (
+	ConfigMapResourceName string = "configmaps"
+)
+
+type ConfigMapsNamespacer interface {
+	ConfigMaps(namespace string) ConfigMapsInterface
+}
+
+type ConfigMapsInterface interface {
+	Get(string) (*extensions.ConfigMap, error)
+	List(opts api.ListOptions) (*extensions.ConfigMapList, error)
+	Create(*extensions.ConfigMap) (*extensions.ConfigMap, error)
+	Delete(string) error
+	Update(*extensions.ConfigMap) (*extensions.ConfigMap, error)
+	Watch(api.ListOptions) (watch.Interface, error)
+}
+
+type ConfigMaps struct {
+	client    *ExtensionsClient
+	namespace string
+}
+
+// ConfigMaps should implement ConfigMapsInterface
+var _ ConfigMapsInterface = &ConfigMaps{}
+
+func newConfigMaps(c *ExtensionsClient, ns string) *ConfigMaps {
+	return &ConfigMaps{
+		client:    c,
+		namespace: ns,
+	}
+}
+
+func (c *ConfigMaps) Get(name string) (*extensions.ConfigMap, error) {
+	result := &extensions.ConfigMap{}
+	err := c.client.Get().
+		Namespace(c.namespace).
+		Resource(ConfigMapResourceName).
+		Name(name).
+		Do().
+		Into(result)
+
+	return result, err
+}
+
+func (c *ConfigMaps) List(opts api.ListOptions) (*extensions.ConfigMapList, error) {
+	result := &extensions.ConfigMapList{}
+	err := c.client.Get().
+		Namespace(c.namespace).
+		Resource(ConfigMapResourceName).
+		VersionedParams(&opts, api.Scheme).
+		Do().
+		Into(result)
+
+	return result, err
+}
+
+func (c *ConfigMaps) Create(cfg *extensions.ConfigMap) (*extensions.ConfigMap, error) {
+	result := &extensions.ConfigMap{}
+	err := c.client.Post().
+		Namespace(c.namespace).
+		Resource(ConfigMapResourceName).
+		Body(cfg).
+		Do().
+		Into(result)
+
+	return result, err
+}
+
+func (c *ConfigMaps) Delete(name string) error {
+	return c.client.Delete().
+		Namespace(c.namespace).
+		Resource(ConfigMapResourceName).
+		Name(name).
+		Do().
+		Error()
+}
+
+func (c *ConfigMaps) Update(cfg *extensions.ConfigMap) (*extensions.ConfigMap, error) {
+	result := &extensions.ConfigMap{}
+
+	err := c.client.Put().
+		Namespace(c.namespace).
+		Resource(ConfigMapResourceName).
+		Name(cfg.Name).
+		Body(cfg).
+		Do().
+		Into(result)
+
+	return result, err
+}
+
+func (c *ConfigMaps) Watch(opts api.ListOptions) (watch.Interface, error) {
+	return c.client.Get().
+		Prefix("watch").
+		Namespace(c.namespace).
+		Resource(ConfigMapResourceName).
+		VersionedParams(&opts, api.Scheme).
+		Watch()
+}

pkg/client/unversioned/extensions.go

@@ -39,6 +39,7 @@ type ExtensionsInterface interface {
 	JobsNamespacer
 	IngressNamespacer
 	ThirdPartyResourceNamespacer
+	ConfigMapsNamespacer
 }
 
 // ExtensionsClient is used to interact with experimental Kubernetes features.
@@ -101,6 +102,10 @@ func (c *ExtensionsClient) Ingress(namespace string) IngressInterface {
 	return newIngress(c, namespace)
 }
 
+func (c *ExtensionsClient) ConfigMaps(namespace string) ConfigMapsInterface {
+	return newConfigMaps(c, namespace)
+}
+
 func (c *ExtensionsClient) ThirdPartyResources(namespace string) ThirdPartyResourceInterface {
 	return newThirdPartyResources(c, namespace)
 }

pkg/client/unversioned/testclient/fake_configmaps.go

@@ -0,0 +1,79 @@
+/*
+Copyright 2015 The Kubernetes Authors All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package testclient
+
+import (
+	"k8s.io/kubernetes/pkg/api"
+	"k8s.io/kubernetes/pkg/apis/extensions"
+	"k8s.io/kubernetes/pkg/watch"
+)
+
+const (
+	configMapResourceName string = "configMaps"
+)
+
+// FakeConfigMaps implements ConfigMapInterface. Meant to be embedded into a struct to get a default
+// implementation. This makes faking out just the method you want to test easier.
+type FakeConfigMaps struct {
+	Fake      *FakeExperimental
+	Namespace string
+}
+
+func (c *FakeConfigMaps) Get(name string) (*extensions.ConfigMap, error) {
+	obj, err := c.Fake.Invokes(NewGetAction(configMapResourceName, c.Namespace, name), &extensions.ConfigMap{})
+	if obj == nil {
+		return nil, err
+	}
+
+	return obj.(*extensions.ConfigMap), err
+}
+
+func (c *FakeConfigMaps) List(opts api.ListOptions) (*extensions.ConfigMapList, error) {
+	obj, err := c.Fake.Invokes(NewListAction(configMapResourceName, c.Namespace, opts), &extensions.ConfigMapList{})
+	if obj == nil {
+		return nil, err
+	}
+
+	return obj.(*extensions.ConfigMapList), err
+}
+
+func (c *FakeConfigMaps) Create(cfg *extensions.ConfigMap) (*extensions.ConfigMap, error) {
+	obj, err := c.Fake.Invokes(NewCreateAction(configMapResourceName, c.Namespace, cfg), cfg)
+	if obj == nil {
+		return nil, err
+	}
+
+	return obj.(*extensions.ConfigMap), err
+}
+
+func (c *FakeConfigMaps) Update(cfg *extensions.ConfigMap) (*extensions.ConfigMap, error) {
+	obj, err := c.Fake.Invokes(NewUpdateAction(configMapResourceName, c.Namespace, cfg), cfg)
+	if obj == nil {
+		return nil, err
+	}
+
+	return obj.(*extensions.ConfigMap), err
+}
+
+func (c *FakeConfigMaps) Delete(name string) error {
+	_, err := c.Fake.Invokes(NewDeleteAction(configMapResourceName, c.Namespace, name), &extensions.ConfigMap{})
+	return err
+}
+
+func (c *FakeConfigMaps) Watch(opts api.ListOptions) (watch.Interface, error) {
+	return c.Fake.InvokesWatch(NewWatchAction(configMapResourceName, c.Namespace, opts))
+}

pkg/client/unversioned/testclient/testclient.go

@@ -353,6 +353,10 @@ func (c *FakeExperimental) Ingress(namespace string) client.IngressInterface {
 	return &FakeIngress{Fake: c, Namespace: namespace}
 }
 
+func (c *FakeExperimental) ConfigMaps(namespace string) client.ConfigMapsInterface {
+	return &FakeConfigMaps{Fake: c, Namespace: namespace}
+}
+
 func (c *FakeExperimental) ThirdPartyResources(namespace string) client.ThirdPartyResourceInterface {
 	return &FakeThirdPartyResources{Fake: c, Namespace: namespace}
 }

pkg/registry/configmap/doc.go

@@ -0,0 +1,20 @@
+/*
+Copyright 2015 The Kubernetes Authors All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package configmap provides Registry interface
+// and its REST implementation for storing
+// ConfigMap API objects.
+package configmap

pkg/registry/configmap/etcd/etcd.go

@@ -0,0 +1,79 @@
+/*
+Copyright 2015 The Kubernetes Authors All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package etcd
+
+import (
+	"k8s.io/kubernetes/pkg/api"
+	"k8s.io/kubernetes/pkg/apis/extensions"
+	"k8s.io/kubernetes/pkg/registry/configmap"
+	"k8s.io/kubernetes/pkg/registry/generic"
+	"k8s.io/kubernetes/pkg/runtime"
+	"k8s.io/kubernetes/pkg/storage"
+
+	etcdgeneric "k8s.io/kubernetes/pkg/registry/generic/etcd"
+)
+
+// REST implements a RESTStorage for ConfigMap against etcd
+type REST struct {
+	*etcdgeneric.Etcd
+}
+
+// NewREST returns a RESTStorage object that will work with ConfigMap objects.
+func NewREST(s storage.Interface, storageDecorator generic.StorageDecorator) *REST {
+	prefix := "/configmaps"
+
+	newListFunc := func() runtime.Object { return &extensions.ConfigMapList{} }
+	storageInterface := storageDecorator(
+		s, 100, &extensions.ConfigMap{}, prefix, false, newListFunc)
+
+	store := &etcdgeneric.Etcd{
+		NewFunc: func() runtime.Object {
+			return &extensions.ConfigMap{}
+		},
+
+		// NewListFunc returns an object to store results of an etcd list.
+		NewListFunc: newListFunc,
+
+		// Produces a path that etcd understands, to the root of the resource
+		// by combining the namespace in the context with the given prefix.
+		KeyRootFunc: func(ctx api.Context) string {
+			return etcdgeneric.NamespaceKeyRootFunc(ctx, prefix)
+		},
+
+		// Produces a path that etcd understands, to the resource by combining
+		// the namespace in the context with the given prefix
+		KeyFunc: func(ctx api.Context, name string) (string, error) {
+			return etcdgeneric.NamespaceKeyFunc(ctx, prefix, name)
+		},
+
+		// Retrieves the name field of a ConfigMap object.
+		ObjectNameFunc: func(obj runtime.Object) (string, error) {
+			return obj.(*extensions.ConfigMap).Name, nil
+		},
+
+		// Matches objects based on labels/fields for list and watch
+		PredicateFunc: configmap.MatchConfigMap,
+
+		EndpointName: "configmaps",
+
+		CreateStrategy: configmap.Strategy,
+		UpdateStrategy: configmap.Strategy,
+
+		Storage: storageInterface,
+	}
+	return &REST{store}
+}

pkg/registry/configmap/etcd/etcd_test.go

@@ -0,0 +1,149 @@
+/*
+Copyright 2015 The Kubernetes Authors All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package etcd
+
+import (
+	"testing"
+
+	"k8s.io/kubernetes/pkg/api"
+	"k8s.io/kubernetes/pkg/apis/extensions"
+	"k8s.io/kubernetes/pkg/fields"
+	"k8s.io/kubernetes/pkg/labels"
+	"k8s.io/kubernetes/pkg/registry/generic"
+	"k8s.io/kubernetes/pkg/registry/registrytest"
+	"k8s.io/kubernetes/pkg/runtime"
+	etcdtesting "k8s.io/kubernetes/pkg/storage/etcd/testing"
+)
+
+func newStorage(t *testing.T) (*REST, *etcdtesting.EtcdTestServer) {
+	etcdStorage, server := registrytest.NewEtcdStorage(t, "extensions")
+	return NewREST(etcdStorage, generic.UndecoratedStorage), server
+}
+
+func validNewConfigMap() *extensions.ConfigMap {
+	return &extensions.ConfigMap{
+		ObjectMeta: api.ObjectMeta{
+			Name:      "foo",
+			Namespace: "default",
+			Labels: map[string]string{
+				"label-1": "value-1",
+				"label-2": "value-2",
+			},
+		},
+		Data: map[string]string{
+			"test": "data",
+		},
+	}
+}
+
+func TestCreate(t *testing.T) {
+	storage, server := newStorage(t)
+	defer server.Terminate(t)
+	test := registrytest.New(t, storage.Etcd)
+
+	validConfigMap := validNewConfigMap()
+	validConfigMap.ObjectMeta = api.ObjectMeta{
+		GenerateName: "foo-",
+	}
+
+	test.TestCreate(
+		validConfigMap,
+		&extensions.ConfigMap{
+			ObjectMeta: api.ObjectMeta{Name: "badName"},
+			Data: map[string]string{
+				"key": "value",
+			},
+		},
+		&extensions.ConfigMap{
+			ObjectMeta: api.ObjectMeta{Name: "name-2"},
+			Data: map[string]string{
+				"..dotfile": "do: nothing\n",
+			},
+		},
+	)
+}
+
+func TestUpdate(t *testing.T) {
+	storage, server := newStorage(t)
+	defer server.Terminate(t)
+	test := registrytest.New(t, storage.Etcd)
+	test.TestUpdate(
+		// valid
+		validNewConfigMap(),
+		// updateFunc
+		func(obj runtime.Object) runtime.Object {
+			cfg := obj.(*extensions.ConfigMap)
+			cfg.Data["update-test"] = "value"
+			return cfg
+		},
+		// invalid updateFunc
+		func(obj runtime.Object) runtime.Object {
+			cfg := obj.(*extensions.ConfigMap)
+			cfg.Data["badKey"] = "value"
+			return cfg
+		},
+	)
+}
+
+func TestDelete(t *testing.T) {
+	storage, server := newStorage(t)
+	defer server.Terminate(t)
+	test := registrytest.New(t, storage.Etcd)
+	test.TestDelete(validNewConfigMap())
+}
+
+func TestGet(t *testing.T) {
+	storage, server := newStorage(t)
+	defer server.Terminate(t)
+	test := registrytest.New(t, storage.Etcd)
+	test.TestGet(validNewConfigMap())
+}
+
+func TestList(t *testing.T) {
+	storage, server := newStorage(t)
+	defer server.Terminate(t)
+	test := registrytest.New(t, storage.Etcd)
+	test.TestList(validNewConfigMap())
+}
+
+func TestWatch(t *testing.T) {
+	storage, server := newStorage(t)
+	defer server.Terminate(t)
+	test := registrytest.New(t, storage.Etcd)
+	test.TestWatch(
+		validNewConfigMap(),
+		// matching labels
+		[]labels.Set{
+			{"label-1": "value-1"},
+			{"label-2": "value-2"},
+		},
+		// not matching labels
+		[]labels.Set{
+			{"foo": "bar"},
+		},
+		// matching fields
+		[]fields.Set{
+			{"metadata.namespace": "default"},
+			{"metadata.name": "foo"},
+		},
+		// not matching fields
+		[]fields.Set{
+			{"metadata.name": "bar"},
+			{"name": "foo"},
+		},
+	)
+}

pkg/registry/configmap/registry.go

@@ -0,0 +1,92 @@
+/*
+Copyright 2015 The Kubernetes Authors All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package configmap
+
+import (
+	"k8s.io/kubernetes/pkg/api"
+	"k8s.io/kubernetes/pkg/api/rest"
+	"k8s.io/kubernetes/pkg/api/unversioned"
+	"k8s.io/kubernetes/pkg/apis/extensions"
+	"k8s.io/kubernetes/pkg/watch"
+)
+
+// Registry is an interface for things that know how to store ConfigMaps.
+type Registry interface {
+	ListConfigMaps(ctx api.Context, options *unversioned.ListOptions) (*extensions.ConfigMapList, error)
+	WatchConfigMaps(ctx api.Context, options *unversioned.ListOptions) (watch.Interface, error)
+	GetConfigMap(ctx api.Context, name string) (*extensions.ConfigMap, error)
+	CreateConfigMap(ctx api.Context, cfg *extensions.ConfigMap) (*extensions.ConfigMap, error)
+	UpdateConfigMap(ctx api.Context, cfg *extensions.ConfigMap) (*extensions.ConfigMap, error)
+	DeleteConfigMap(ctx api.Context, name 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) ListConfigMaps(ctx api.Context, options *unversioned.ListOptions) (*extensions.ConfigMapList, error) {
+	obj, err := s.List(ctx, options)
+	if err != nil {
+		return nil, err
+	}
+
+	return obj.(*extensions.ConfigMapList), err
+}
+
+func (s *storage) WatchConfigMaps(ctx api.Context, options *unversioned.ListOptions) (watch.Interface, error) {
+	return s.Watch(ctx, options)
+}
+
+func (s *storage) GetConfigMap(ctx api.Context, name string) (*extensions.ConfigMap, error) {
+	obj, err := s.Get(ctx, name)
+	if err != nil {
+		return nil, err
+	}
+
+	return obj.(*extensions.ConfigMap), nil
+}
+
+func (s *storage) CreateConfigMap(ctx api.Context, cfg *extensions.ConfigMap) (*extensions.ConfigMap, error) {
+	obj, err := s.Create(ctx, cfg)
+	if err != nil {
+		return nil, err
+	}
+
+	return obj.(*extensions.ConfigMap), nil
+}
+
+func (s *storage) UpdateConfigMap(ctx api.Context, cfg *extensions.ConfigMap) (*extensions.ConfigMap, error) {
+	obj, _, err := s.Update(ctx, cfg)
+	if err != nil {
+		return nil, err
+	}
+
+	return obj.(*extensions.ConfigMap), nil
+}
+
+func (s *storage) DeleteConfigMap(ctx api.Context, name string) error {
+	_, err := s.Delete(ctx, name, nil)
+
+	return err
+}

pkg/registry/configmap/strategy.go

@@ -0,0 +1,105 @@
+/*
+Copyright 2015 The Kubernetes Authors All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package configmap
+
+import (
+	"fmt"
+
+	"k8s.io/kubernetes/pkg/api"
+	"k8s.io/kubernetes/pkg/api/rest"
+	"k8s.io/kubernetes/pkg/apis/extensions"
+	"k8s.io/kubernetes/pkg/apis/extensions/validation"
+	"k8s.io/kubernetes/pkg/fields"
+	"k8s.io/kubernetes/pkg/labels"
+	"k8s.io/kubernetes/pkg/registry/generic"
+	"k8s.io/kubernetes/pkg/runtime"
+	"k8s.io/kubernetes/pkg/util/validation/field"
+)
+
+// strategy implements behavior for ConfigMap objects
+type strategy struct {
+	runtime.ObjectTyper
+	api.NameGenerator
+}
+
+// Strategy is the default logic that applies when creating and updating ConfigMap
+// objects via the REST API.
+var Strategy = strategy{api.Scheme, api.SimpleNameGenerator}
+
+// Strategy should implement rest.RESTCreateStrategy
+var _ rest.RESTCreateStrategy = Strategy
+
+// Strategy should implement rest.RESTUpdateStrategy
+var _ rest.RESTUpdateStrategy = Strategy
+
+func (strategy) NamespaceScoped() bool {
+	return true
+}
+
+func (strategy) PrepareForCreate(obj runtime.Object) {
+	_ = obj.(*extensions.ConfigMap)
+}
+
+func (strategy) Validate(ctx api.Context, obj runtime.Object) field.ErrorList {
+	cfg := obj.(*extensions.ConfigMap)
+
+	return validation.ValidateConfigMap(cfg)
+}
+
+// Canonicalize normalizes the object after validation.
+func (strategy) Canonicalize(obj runtime.Object) {
+}
+
+func (strategy) AllowCreateOnUpdate() bool {
+	return false
+}
+
+func (strategy) PrepareForUpdate(newObj, oldObj runtime.Object) {
+	_ = oldObj.(*extensions.ConfigMap)
+	_ = newObj.(*extensions.ConfigMap)
+}
+
+func (strategy) AllowUnconditionalUpdate() bool {
+	return true
+}
+
+func (strategy) ValidateUpdate(ctx api.Context, newObj, oldObj runtime.Object) field.ErrorList {
+	oldCfg, newCfg := oldObj.(*extensions.ConfigMap), newObj.(*extensions.ConfigMap)
+
+	return validation.ValidateConfigMapUpdate(newCfg, oldCfg)
+}
+
+// ConfigMapToSelectableFields returns a field set that represents the object for matching purposes.
+func ConfigMapToSelectableFields(cfg *extensions.ConfigMap) fields.Set {
+	return generic.ObjectMetaFieldsSet(cfg.ObjectMeta, true)
+}
+
+// MatchConfigMap returns a generic matcher for a given label and field selector.
+func MatchConfigMap(label labels.Selector, field fields.Selector) generic.Matcher {
+	return &generic.SelectionPredicate{
+		Label: label,
+		Field: field,
+		GetAttrs: func(obj runtime.Object) (labels.Set, fields.Set, error) {
+			cfg, ok := obj.(*extensions.ConfigMap)
+			if !ok {
+				return nil, nil, fmt.Errorf("given object is not of type ConfigMap")
+			}
+
+			return labels.Set(cfg.ObjectMeta.Labels), ConfigMapToSelectableFields(cfg), nil
+		},
+	}
+}

pkg/registry/configmap/strategy_test.go

@@ -0,0 +1,69 @@
+/*
+Copyright 2015 The Kubernetes Authors All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package configmap
+
+import (
+	"testing"
+
+	"k8s.io/kubernetes/pkg/api"
+	"k8s.io/kubernetes/pkg/apis/extensions"
+)
+
+func TestConfigMapStrategy(t *testing.T) {
+	ctx := api.NewDefaultContext()
+	if !Strategy.NamespaceScoped() {
+		t.Errorf("ConfigMap must be namespace scoped")
+	}
+	if Strategy.AllowCreateOnUpdate() {
+		t.Errorf("ConfigMap should not allow create on update")
+	}
+
+	cfg := &extensions.ConfigMap{
+		ObjectMeta: api.ObjectMeta{
+			Name:      "valid-config-data",
+			Namespace: api.NamespaceDefault,
+		},
+		Data: map[string]string{
+			"foo": "bar",
+		},
+	}
+
+	Strategy.PrepareForCreate(cfg)
+
+	errs := Strategy.Validate(ctx, cfg)
+	if len(errs) != 0 {
+		t.Errorf("unexpected error validating %v", errs)
+	}
+
+	newCfg := &extensions.ConfigMap{
+		ObjectMeta: api.ObjectMeta{
+			Name:            "valid-config-data-2",
+			Namespace:       api.NamespaceDefault,
+			ResourceVersion: "4",
+		},
+		Data: map[string]string{
+			"invalidKey": "updatedValue",
+		},
+	}
+
+	Strategy.PrepareForUpdate(newCfg, cfg)
+
+	errs = Strategy.ValidateUpdate(ctx, newCfg, cfg)
+	if len(errs) == 0 {
+		t.Errorf("Expected a validation error")
+	}
+}