Add generated file

This PR adds generated files under pkg/client and vendor folder.

vendor/k8s.io/client-go/scale/util.go

@@ -0,0 +1,196 @@
+/*
+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 scale
+
+import (
+	"fmt"
+	"strings"
+	"sync"
+
+	"k8s.io/apimachinery/pkg/api/meta"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	serializer "k8s.io/apimachinery/pkg/runtime/serializer"
+	"k8s.io/client-go/discovery"
+	scalescheme "k8s.io/client-go/scale/scheme"
+	scaleappsint "k8s.io/client-go/scale/scheme/appsint"
+	scaleappsv1beta1 "k8s.io/client-go/scale/scheme/appsv1beta1"
+	scaleappsv1beta2 "k8s.io/client-go/scale/scheme/appsv1beta2"
+	scaleautoscaling "k8s.io/client-go/scale/scheme/autoscalingv1"
+	scaleextint "k8s.io/client-go/scale/scheme/extensionsint"
+	scaleext "k8s.io/client-go/scale/scheme/extensionsv1beta1"
+)
+
+// PreferredResourceMapper determines the preferred version of a resource to scale
+type PreferredResourceMapper interface {
+	// ResourceFor takes a partial resource and returns the preferred resource.
+	ResourceFor(resource schema.GroupVersionResource) (preferredResource schema.GroupVersionResource, err error)
+}
+
+// Ensure a RESTMapper satisfies the PreferredResourceMapper interface
+var _ PreferredResourceMapper = meta.RESTMapper(nil)
+
+// ScaleKindResolver knows about the relationship between
+// resources and the GroupVersionKind of their scale subresources.
+type ScaleKindResolver interface {
+	// ScaleForResource returns the GroupVersionKind of the
+	// scale subresource for the given GroupVersionResource.
+	ScaleForResource(resource schema.GroupVersionResource) (scaleVersion schema.GroupVersionKind, err error)
+}
+
+// discoveryScaleResolver is a ScaleKindResolver that uses
+// a DiscoveryInterface to associate resources with their
+// scale-kinds
+type discoveryScaleResolver struct {
+	discoveryClient discovery.ServerResourcesInterface
+}
+
+func (r *discoveryScaleResolver) ScaleForResource(inputRes schema.GroupVersionResource) (scaleVersion schema.GroupVersionKind, err error) {
+	groupVerResources, err := r.discoveryClient.ServerResourcesForGroupVersion(inputRes.GroupVersion().String())
+	if err != nil {
+		return schema.GroupVersionKind{}, fmt.Errorf("unable to fetch discovery information for %s: %v", inputRes.String(), err)
+	}
+
+	for _, resource := range groupVerResources.APIResources {
+		resourceParts := strings.SplitN(resource.Name, "/", 2)
+		if len(resourceParts) != 2 || resourceParts[0] != inputRes.Resource || resourceParts[1] != "scale" {
+			// skip non-scale resources, or scales for resources that we're not looking for
+			continue
+		}
+
+		scaleGV := inputRes.GroupVersion()
+		if resource.Group != "" && resource.Version != "" {
+			scaleGV = schema.GroupVersion{
+				Group:   resource.Group,
+				Version: resource.Version,
+			}
+		}
+
+		return scaleGV.WithKind(resource.Kind), nil
+	}
+
+	return schema.GroupVersionKind{}, fmt.Errorf("could not find scale subresource for %s in discovery information", inputRes.String())
+}
+
+// cachedScaleKindResolver is a ScaleKindResolver that caches results
+// from another ScaleKindResolver, re-fetching on cache misses.
+type cachedScaleKindResolver struct {
+	base ScaleKindResolver
+
+	cache map[schema.GroupVersionResource]schema.GroupVersionKind
+	mu    sync.RWMutex
+}
+
+func (r *cachedScaleKindResolver) ScaleForResource(resource schema.GroupVersionResource) (schema.GroupVersionKind, error) {
+	r.mu.RLock()
+	gvk, isCached := r.cache[resource]
+	r.mu.RUnlock()
+	if isCached {
+		return gvk, nil
+	}
+
+	// we could have multiple fetches of the same resources, but that's probably
+	// better than limiting to only one reader at once (mu.Mutex),
+	// or blocking checks for other resources while we fetch
+	// (mu.Lock before fetch).
+	gvk, err := r.base.ScaleForResource(resource)
+	if err != nil {
+		return schema.GroupVersionKind{}, err
+	}
+
+	r.mu.Lock()
+	defer r.mu.Unlock()
+	r.cache[resource] = gvk
+
+	return gvk, nil
+}
+
+// NewDiscoveryScaleKindResolver creates a new ScaleKindResolver which uses information from the given
+// disovery client to resolve the correct Scale GroupVersionKind for different resources.
+func NewDiscoveryScaleKindResolver(client discovery.ServerResourcesInterface) ScaleKindResolver {
+	base := &discoveryScaleResolver{
+		discoveryClient: client,
+	}
+
+	return &cachedScaleKindResolver{
+		base:  base,
+		cache: make(map[schema.GroupVersionResource]schema.GroupVersionKind),
+	}
+}
+
+// ScaleConverter knows how to convert between external scale versions.
+type ScaleConverter struct {
+	scheme            *runtime.Scheme
+	codecs            serializer.CodecFactory
+	internalVersioner runtime.GroupVersioner
+}
+
+// NewScaleConverter creates a new ScaleConverter for converting between
+// Scales in autoscaling/v1 and extensions/v1beta1.
+func NewScaleConverter() *ScaleConverter {
+	scheme := runtime.NewScheme()
+	scaleautoscaling.AddToScheme(scheme)
+	scalescheme.AddToScheme(scheme)
+	scaleext.AddToScheme(scheme)
+	scaleextint.AddToScheme(scheme)
+	scaleappsint.AddToScheme(scheme)
+	scaleappsv1beta1.AddToScheme(scheme)
+	scaleappsv1beta2.AddToScheme(scheme)
+
+	return &ScaleConverter{
+		scheme: scheme,
+		codecs: serializer.NewCodecFactory(scheme),
+		internalVersioner: runtime.NewMultiGroupVersioner(
+			scalescheme.SchemeGroupVersion,
+			schema.GroupKind{Group: scaleext.GroupName, Kind: "Scale"},
+			schema.GroupKind{Group: scaleautoscaling.GroupName, Kind: "Scale"},
+			schema.GroupKind{Group: scaleappsv1beta1.GroupName, Kind: "Scale"},
+			schema.GroupKind{Group: scaleappsv1beta2.GroupName, Kind: "Scale"},
+		),
+	}
+}
+
+// Scheme returns the scheme used by this scale converter.
+func (c *ScaleConverter) Scheme() *runtime.Scheme {
+	return c.scheme
+}
+
+func (c *ScaleConverter) Codecs() serializer.CodecFactory {
+	return c.codecs
+}
+
+func (c *ScaleConverter) ScaleVersions() []schema.GroupVersion {
+	return []schema.GroupVersion{
+		scaleautoscaling.SchemeGroupVersion,
+		scalescheme.SchemeGroupVersion,
+		scaleext.SchemeGroupVersion,
+		scaleextint.SchemeGroupVersion,
+		scaleappsint.SchemeGroupVersion,
+		scaleappsv1beta1.SchemeGroupVersion,
+		scaleappsv1beta2.SchemeGroupVersion,
+	}
+}
+
+// ConvertToVersion converts the given *external* input object to the given output *external* output group-version.
+func (c *ScaleConverter) ConvertToVersion(in runtime.Object, outVersion schema.GroupVersion) (runtime.Object, error) {
+	scaleInt, err := c.scheme.ConvertToVersion(in, c.internalVersioner)
+	if err != nil {
+		return nil, err
+	}
+
+	return c.scheme.ConvertToVersion(scaleInt, outVersion)
+}