Implemented Autoscaling client

pkg/client/unversioned/autoscaling.go

@@ -0,0 +1,82 @@
+/*
+Copyright 2016 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/apimachinery/registered"
+	"k8s.io/kubernetes/pkg/apis/autoscaling"
+)
+
+type AutoscalingInterface interface {
+	HorizontalPodAutoscalersNamespacer
+}
+
+// AutoscalingClient is used to interact with Kubernetes autoscaling features.
+type AutoscalingClient struct {
+	*RESTClient
+}
+
+func (c *AutoscalingClient) HorizontalPodAutoscalers(namespace string) HorizontalPodAutoscalerInterface {
+	return newHorizontalPodAutoscalersV1(c, namespace)
+}
+
+func NewAutoscaling(c *Config) (*AutoscalingClient, error) {
+	config := *c
+	if err := setAutoscalingDefaults(&config); err != nil {
+		return nil, err
+	}
+	client, err := RESTClientFor(&config)
+	if err != nil {
+		return nil, err
+	}
+	return &AutoscalingClient{client}, nil
+}
+
+func NewAutoscalingOrDie(c *Config) *AutoscalingClient {
+	client, err := NewAutoscaling(c)
+	if err != nil {
+		panic(err)
+	}
+	return client
+}
+
+func setAutoscalingDefaults(config *Config) error {
+	// if autoscaling group is not registered, return an error
+	g, err := registered.Group(autoscaling.GroupName)
+	if err != nil {
+		return err
+	}
+	config.APIPath = defaultAPIPath
+	if config.UserAgent == "" {
+		config.UserAgent = DefaultKubernetesUserAgent()
+	}
+	// TODO: Unconditionally set the config.Version, until we fix the config.
+	//if config.Version == "" {
+	copyGroupVersion := g.GroupVersion
+	config.GroupVersion = &copyGroupVersion
+	//}
+
+	config.Codec = api.Codecs.LegacyCodec(*config.GroupVersion)
+	if config.QPS == 0 {
+		config.QPS = 5
+	}
+	if config.Burst == 0 {
+		config.Burst = 10
+	}
+	return nil
+}

pkg/client/unversioned/client.go

@@ -41,6 +41,7 @@ type Interface interface {
 	PersistentVolumeClaimsNamespacer
 	ComponentStatusesInterface
 	ConfigMapsNamespacer
+	Autoscaling() AutoscalingInterface
 	Extensions() ExtensionsInterface
 	Discovery() DiscoveryInterface
 }
@@ -111,6 +112,7 @@ func (c *Client) ConfigMaps(namespace string) ConfigMapsInterface {
 // Client is the implementation of a Kubernetes client.
 type Client struct {
 	*RESTClient
+	*AutoscalingClient
 	*ExtensionsClient
 	*DiscoveryClient
 }
@@ -146,6 +148,10 @@ func IsTimeout(err error) bool {
 	return false
 }
 
+func (c *Client) Autoscaling() AutoscalingInterface {
+	return c.AutoscalingClient
+}
+
 func (c *Client) Extensions() ExtensionsInterface {
 	return c.ExtensionsClient
 }

pkg/client/unversioned/helper.go

@@ -33,6 +33,7 @@ import (
 	"k8s.io/kubernetes/pkg/api"
 	"k8s.io/kubernetes/pkg/api/unversioned"
 	"k8s.io/kubernetes/pkg/apimachinery/registered"
+	"k8s.io/kubernetes/pkg/apis/autoscaling"
 	"k8s.io/kubernetes/pkg/apis/extensions"
 	"k8s.io/kubernetes/pkg/runtime"
 	"k8s.io/kubernetes/pkg/util"
@@ -155,16 +156,25 @@ func New(c *Config) (*Client, error) {
 		return nil, err
 	}
 
-	if _, err := registered.Group(extensions.GroupName); err != nil {
-		return &Client{RESTClient: client, ExtensionsClient: nil, DiscoveryClient: discoveryClient}, nil
-	}
-	experimentalConfig := *c
-	experimentalClient, err := NewExtensions(&experimentalConfig)
-	if err != nil {
-		return nil, err
+	var autoscalingClient *AutoscalingClient
+	if registered.IsRegistered(autoscaling.GroupName) {
+		autoscalingConfig := *c
+		autoscalingClient, err = NewAutoscaling(&autoscalingConfig)
+		if err != nil {
+			return nil, err
+		}
 	}
 
-	return &Client{RESTClient: client, ExtensionsClient: experimentalClient, DiscoveryClient: discoveryClient}, nil
+	var extensionsClient *ExtensionsClient
+	if registered.IsRegistered(extensions.GroupName) {
+		extensionsConfig := *c
+		extensionsClient, err = NewExtensions(&extensionsConfig)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	return &Client{RESTClient: client, AutoscalingClient: autoscalingClient, ExtensionsClient: extensionsClient, DiscoveryClient: discoveryClient}, nil
 }
 
 // MatchesServerVersion queries the server to compares the build version

pkg/client/unversioned/horizontalpodautoscaler.go

@@ -101,3 +101,68 @@ func (c *horizontalPodAutoscalers) Watch(opts api.ListOptions) (watch.Interface,
 		VersionedParams(&opts, api.ParameterCodec).
 		Watch()
 }
+
+// horizontalPodAutoscalersV1 implements HorizontalPodAutoscalersNamespacer interface using AutoscalingClient internally
+// TODO(piosz): get back to one client implementation once HPA will be graduated to GA completely
+type horizontalPodAutoscalersV1 struct {
+	client *AutoscalingClient
+	ns     string
+}
+
+// newHorizontalPodAutoscalers returns a horizontalPodAutoscalers
+func newHorizontalPodAutoscalersV1(c *AutoscalingClient, namespace string) *horizontalPodAutoscalersV1 {
+	return &horizontalPodAutoscalersV1{
+		client: c,
+		ns:     namespace,
+	}
+}
+
+// List takes label and field selectors, and returns the list of horizontalPodAutoscalers that match those selectors.
+func (c *horizontalPodAutoscalersV1) List(opts api.ListOptions) (result *extensions.HorizontalPodAutoscalerList, err error) {
+	result = &extensions.HorizontalPodAutoscalerList{}
+	err = c.client.Get().Namespace(c.ns).Resource("horizontalPodAutoscalers").VersionedParams(&opts, api.ParameterCodec).Do().Into(result)
+	return
+}
+
+// Get takes the name of the horizontalPodAutoscaler, and returns the corresponding HorizontalPodAutoscaler object, and an error if it occurs
+func (c *horizontalPodAutoscalersV1) Get(name string) (result *extensions.HorizontalPodAutoscaler, err error) {
+	result = &extensions.HorizontalPodAutoscaler{}
+	err = c.client.Get().Namespace(c.ns).Resource("horizontalPodAutoscalers").Name(name).Do().Into(result)
+	return
+}
+
+// Delete takes the name of the horizontalPodAutoscaler and deletes it.  Returns an error if one occurs.
+func (c *horizontalPodAutoscalersV1) Delete(name string, options *api.DeleteOptions) error {
+	return c.client.Delete().Namespace(c.ns).Resource("horizontalPodAutoscalers").Name(name).Body(options).Do().Error()
+}
+
+// Create takes the representation of a horizontalPodAutoscaler and creates it.  Returns the server's representation of the horizontalPodAutoscaler, and an error, if it occurs.
+func (c *horizontalPodAutoscalersV1) Create(horizontalPodAutoscaler *extensions.HorizontalPodAutoscaler) (result *extensions.HorizontalPodAutoscaler, err error) {
+	result = &extensions.HorizontalPodAutoscaler{}
+	err = c.client.Post().Namespace(c.ns).Resource("horizontalPodAutoscalers").Body(horizontalPodAutoscaler).Do().Into(result)
+	return
+}
+
+// Update takes the representation of a horizontalPodAutoscaler and updates it.  Returns the server's representation of the horizontalPodAutoscaler, and an error, if it occurs.
+func (c *horizontalPodAutoscalersV1) Update(horizontalPodAutoscaler *extensions.HorizontalPodAutoscaler) (result *extensions.HorizontalPodAutoscaler, err error) {
+	result = &extensions.HorizontalPodAutoscaler{}
+	err = c.client.Put().Namespace(c.ns).Resource("horizontalPodAutoscalers").Name(horizontalPodAutoscaler.Name).Body(horizontalPodAutoscaler).Do().Into(result)
+	return
+}
+
+// UpdateStatus takes the representation of a horizontalPodAutoscaler and updates it.  Returns the server's representation of the horizontalPodAutoscaler, and an error, if it occurs.
+func (c *horizontalPodAutoscalersV1) UpdateStatus(horizontalPodAutoscaler *extensions.HorizontalPodAutoscaler) (result *extensions.HorizontalPodAutoscaler, err error) {
+	result = &extensions.HorizontalPodAutoscaler{}
+	err = c.client.Put().Namespace(c.ns).Resource("horizontalPodAutoscalers").Name(horizontalPodAutoscaler.Name).SubResource("status").Body(horizontalPodAutoscaler).Do().Into(result)
+	return
+}
+
+// Watch returns a watch.Interface that watches the requested horizontalPodAutoscalers.
+func (c *horizontalPodAutoscalersV1) Watch(opts api.ListOptions) (watch.Interface, error) {
+	return c.client.Get().
+		Prefix("watch").
+		Namespace(c.ns).
+		Resource("horizontalPodAutoscalers").
+		VersionedParams(&opts, api.ParameterCodec).
+		Watch()
+}

pkg/client/unversioned/testclient/fake_horizontal_pod_autoscalers.go

@@ -91,3 +91,74 @@ func (c *FakeHorizontalPodAutoscalers) Delete(name string, options *api.DeleteOp
 func (c *FakeHorizontalPodAutoscalers) Watch(opts api.ListOptions) (watch.Interface, error) {
 	return c.Fake.InvokesWatch(NewWatchAction("horizontalpodautoscalers", c.Namespace, opts))
 }
+
+// FakeHorizontalPodAutoscalers implements HorizontalPodAutoscalerInterface. Meant to be embedded into a struct to get a default
+// implementation. This makes faking out just the methods you want to test easier.
+// This is a test implementation of HorizontalPodAutoscalersV1
+// TODO(piosz): get back to one client implementation once HPA will be graduated to GA completely
+type FakeHorizontalPodAutoscalersV1 struct {
+	Fake      *FakeAutoscaling
+	Namespace string
+}
+
+func (c *FakeHorizontalPodAutoscalersV1) Get(name string) (*extensions.HorizontalPodAutoscaler, error) {
+	obj, err := c.Fake.Invokes(NewGetAction("horizontalpodautoscalers", c.Namespace, name), &extensions.HorizontalPodAutoscaler{})
+	if obj == nil {
+		return nil, err
+	}
+
+	return obj.(*extensions.HorizontalPodAutoscaler), err
+}
+
+func (c *FakeHorizontalPodAutoscalersV1) List(opts api.ListOptions) (*extensions.HorizontalPodAutoscalerList, error) {
+	obj, err := c.Fake.Invokes(NewListAction("horizontalpodautoscalers", c.Namespace, opts), &extensions.HorizontalPodAutoscalerList{})
+	if obj == nil {
+		return nil, err
+	}
+	label := opts.LabelSelector
+	if label == nil {
+		label = labels.Everything()
+	}
+	list := &extensions.HorizontalPodAutoscalerList{}
+	for _, a := range obj.(*extensions.HorizontalPodAutoscalerList).Items {
+		if label.Matches(labels.Set(a.Labels)) {
+			list.Items = append(list.Items, a)
+		}
+	}
+	return list, err
+}
+
+func (c *FakeHorizontalPodAutoscalersV1) Create(a *extensions.HorizontalPodAutoscaler) (*extensions.HorizontalPodAutoscaler, error) {
+	obj, err := c.Fake.Invokes(NewCreateAction("horizontalpodautoscalers", c.Namespace, a), a)
+	if obj == nil {
+		return nil, err
+	}
+
+	return obj.(*extensions.HorizontalPodAutoscaler), err
+}
+
+func (c *FakeHorizontalPodAutoscalersV1) Update(a *extensions.HorizontalPodAutoscaler) (*extensions.HorizontalPodAutoscaler, error) {
+	obj, err := c.Fake.Invokes(NewUpdateAction("horizontalpodautoscalers", c.Namespace, a), a)
+	if obj == nil {
+		return nil, err
+	}
+
+	return obj.(*extensions.HorizontalPodAutoscaler), err
+}
+
+func (c *FakeHorizontalPodAutoscalersV1) UpdateStatus(a *extensions.HorizontalPodAutoscaler) (*extensions.HorizontalPodAutoscaler, error) {
+	obj, err := c.Fake.Invokes(NewUpdateSubresourceAction("horizontalpodautoscalers", "status", c.Namespace, a), &extensions.HorizontalPodAutoscaler{})
+	if obj == nil {
+		return nil, err
+	}
+	return obj.(*extensions.HorizontalPodAutoscaler), err
+}
+
+func (c *FakeHorizontalPodAutoscalersV1) Delete(name string, options *api.DeleteOptions) error {
+	_, err := c.Fake.Invokes(NewDeleteAction("horizontalpodautoscalers", c.Namespace, name), &extensions.HorizontalPodAutoscaler{})
+	return err
+}
+
+func (c *FakeHorizontalPodAutoscalersV1) Watch(opts api.ListOptions) (watch.Interface, error) {
+	return c.Fake.InvokesWatch(NewWatchAction("horizontalpodautoscalers", c.Namespace, opts))
+}

pkg/client/unversioned/testclient/simple/simple_testclient.go

@@ -84,6 +84,10 @@ func (c *Client) Setup(t *testing.T) *Client {
 
 		// TODO: caesarxuchao: hacky way to specify version of Experimental client.
 		// We will fix this by supporting multiple group versions in Config
+		c.AutoscalingClient = client.NewAutoscalingOrDie(&client.Config{
+			Host:          c.server.URL,
+			ContentConfig: client.ContentConfig{GroupVersion: testapi.Autoscaling.GroupVersion()},
+		})
 		c.ExtensionsClient = client.NewExtensionsOrDie(&client.Config{
 			Host:          c.server.URL,
 			ContentConfig: client.ContentConfig{GroupVersion: testapi.Extensions.GroupVersion()},

pkg/client/unversioned/testclient/testclient.go

@@ -274,6 +274,10 @@ func (c *Fake) Namespaces() client.NamespaceInterface {
 	return &FakeNamespaces{Fake: c}
 }
 
+func (c *Fake) Autoscaling() client.AutoscalingInterface {
+	return &FakeAutoscaling{c}
+}
+
 func (c *Fake) Extensions() client.ExtensionsInterface {
 	return &FakeExperimental{c}
 }
@@ -304,6 +308,19 @@ func (c *Fake) SwaggerSchema(version unversioned.GroupVersion) (*swagger.ApiDecl
 	return &swagger.ApiDeclaration{}, nil
 }
 
+// NewSimpleFakeAutoscaling returns a client that will respond with the provided objects
+func NewSimpleFakeAutoscaling(objects ...runtime.Object) *FakeAutoscaling {
+	return &FakeAutoscaling{Fake: NewSimpleFake(objects...)}
+}
+
+type FakeAutoscaling struct {
+	*Fake
+}
+
+func (c *FakeAutoscaling) HorizontalPodAutoscalers(namespace string) client.HorizontalPodAutoscalerInterface {
+	return &FakeHorizontalPodAutoscalersV1{Fake: c, Namespace: namespace}
+}
+
 // NewSimpleFakeExp returns a client that will respond with the provided objects
 func NewSimpleFakeExp(objects ...runtime.Object) *FakeExperimental {
 	return &FakeExperimental{Fake: NewSimpleFake(objects...)}

pkg/kubectl/cmd/util/factory.go

@@ -39,6 +39,7 @@ import (
 	"k8s.io/kubernetes/pkg/api/unversioned"
 	"k8s.io/kubernetes/pkg/api/validation"
 	"k8s.io/kubernetes/pkg/apimachinery/registered"
+	"k8s.io/kubernetes/pkg/apis/autoscaling"
 	"k8s.io/kubernetes/pkg/apis/extensions"
 	clientset "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
 	client "k8s.io/kubernetes/pkg/client/unversioned"
@@ -217,6 +218,8 @@ func NewFactory(optionalClientConfig clientcmd.ClientConfig) *Factory {
 			switch mapping.GroupVersionKind.Group {
 			case api.GroupName:
 				return client.RESTClient, nil
+			case autoscaling.GroupName:
+				return client.AutoscalingClient.RESTClient, nil
 			case extensions.GroupName:
 				return client.ExtensionsClient.RESTClient, nil
 			}
@@ -700,6 +703,12 @@ func (c *clientSwaggerSchema) ValidateBytes(data []byte) error {
 	if ok := registered.IsEnabledVersion(gvk.GroupVersion()); !ok {
 		return fmt.Errorf("API version %q isn't supported, only supports API versions %q", gvk.GroupVersion().String(), registered.EnabledVersions())
 	}
+	if gvk.Group == autoscaling.GroupName {
+		if c.c.AutoscalingClient == nil {
+			return errors.New("unable to validate: no autoscaling client")
+		}
+		return getSchemaAndValidate(c.c.AutoscalingClient.RESTClient, data, "apis/", gvk.GroupVersion().String(), c.cacheDir)
+	}
 	if gvk.Group == extensions.GroupName {
 		if c.c.ExtensionsClient == nil {
 			return errors.New("unable to validate: no experimental client")