Scale subresource querying in HorizontalPodAutoscaler

pkg/client/unversioned/experimental.go

@@ -33,6 +33,7 @@ import (
 type ExperimentalInterface interface {
 	VersionInterface
 	HorizontalPodAutoscalersNamespacer
+	ScaleNamespacer
 }
 
 // ExperimentalClient is used to interact with experimental Kubernetes features.
@@ -75,6 +76,10 @@ func (c *ExperimentalClient) HorizontalPodAutoscalers(namespace string) Horizont
 	return newHorizontalPodAutoscalers(c, namespace)
 }
 
+func (c *ExperimentalClient) Scales(namespace string) ScaleInterface {
+	return newScales(c, namespace)
+}
+
 // NewExperimental creates a new ExperimentalClient for the given config. This client
 // provides access to experimental Kubernetes features.
 // Experimental features are not supported and may be changed or removed in

pkg/client/unversioned/scale.go

@@ -0,0 +1,59 @@
+/*
+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 (
+	"fmt"
+	"strings"
+
+	"k8s.io/kubernetes/pkg/expapi"
+)
+
+type ScaleNamespacer interface {
+	Scales(namespace string) ScaleInterface
+}
+
+// ScaleInterface has methods to work with Scale (sub)resources.
+type ScaleInterface interface {
+	Get(string, string) (*expapi.Scale, error)
+}
+
+// horizontalPodAutoscalers implements HorizontalPodAutoscalersNamespacer interface
+type scales struct {
+	client *ExperimentalClient
+	ns     string
+}
+
+// newHorizontalPodAutoscalers returns a horizontalPodAutoscalers
+func newScales(c *ExperimentalClient, namespace string) *scales {
+	return &scales{
+		client: c,
+		ns:     namespace,
+	}
+}
+
+// Get takes the reference to scale subresource and returns the subresource or error, if one occurs.
+func (c *scales) Get(kind string, name string) (result *expapi.Scale, err error) {
+	result = &expapi.Scale{}
+	if strings.ToLower(kind) == "replicationcontroller" {
+		kind = "replicationControllers"
+		err = c.client.Get().Namespace(c.ns).Resource(kind).Name(name).SubResource("scale").Do().Into(result)
+		return
+	}
+	err = fmt.Errorf("Kind not supported: %s", kind)
+	return
+}