Add generated file

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

vendor/k8s.io/apiextensions-apiserver/pkg/apiserver/customresource_discovery_controller.go

@@ -0,0 +1,275 @@
+/*
+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 apiserver
+
+import (
+	"fmt"
+	"sort"
+	"time"
+
+	"github.com/golang/glog"
+
+	autoscaling "k8s.io/api/autoscaling/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/labels"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
+	"k8s.io/apimachinery/pkg/util/wait"
+	"k8s.io/apimachinery/pkg/version"
+	"k8s.io/apiserver/pkg/endpoints/discovery"
+	"k8s.io/client-go/tools/cache"
+	"k8s.io/client-go/util/workqueue"
+
+	"k8s.io/apiextensions-apiserver/pkg/apis/apiextensions"
+	informers "k8s.io/apiextensions-apiserver/pkg/client/informers/internalversion/apiextensions/internalversion"
+	listers "k8s.io/apiextensions-apiserver/pkg/client/listers/apiextensions/internalversion"
+)
+
+type DiscoveryController struct {
+	versionHandler *versionDiscoveryHandler
+	groupHandler   *groupDiscoveryHandler
+
+	crdLister  listers.CustomResourceDefinitionLister
+	crdsSynced cache.InformerSynced
+
+	// To allow injection for testing.
+	syncFn func(version schema.GroupVersion) error
+
+	queue workqueue.RateLimitingInterface
+}
+
+func NewDiscoveryController(crdInformer informers.CustomResourceDefinitionInformer, versionHandler *versionDiscoveryHandler, groupHandler *groupDiscoveryHandler) *DiscoveryController {
+	c := &DiscoveryController{
+		versionHandler: versionHandler,
+		groupHandler:   groupHandler,
+		crdLister:      crdInformer.Lister(),
+		crdsSynced:     crdInformer.Informer().HasSynced,
+
+		queue: workqueue.NewNamedRateLimitingQueue(workqueue.DefaultControllerRateLimiter(), "DiscoveryController"),
+	}
+
+	crdInformer.Informer().AddEventHandler(cache.ResourceEventHandlerFuncs{
+		AddFunc:    c.addCustomResourceDefinition,
+		UpdateFunc: c.updateCustomResourceDefinition,
+		DeleteFunc: c.deleteCustomResourceDefinition,
+	})
+
+	c.syncFn = c.sync
+
+	return c
+}
+
+func (c *DiscoveryController) sync(version schema.GroupVersion) error {
+
+	apiVersionsForDiscovery := []metav1.GroupVersionForDiscovery{}
+	apiResourcesForDiscovery := []metav1.APIResource{}
+	versionsForDiscoveryMap := map[metav1.GroupVersion]bool{}
+
+	crds, err := c.crdLister.List(labels.Everything())
+	if err != nil {
+		return err
+	}
+	foundVersion := false
+	foundGroup := false
+	for _, crd := range crds {
+		if !apiextensions.IsCRDConditionTrue(crd, apiextensions.Established) {
+			continue
+		}
+
+		if crd.Spec.Group != version.Group {
+			continue
+		}
+
+		foundThisVersion := false
+		for _, v := range crd.Spec.Versions {
+			if !v.Served {
+				continue
+			}
+			// If there is any Served version, that means the group should show up in discovery
+			foundGroup = true
+
+			gv := metav1.GroupVersion{Group: crd.Spec.Group, Version: v.Name}
+			if !versionsForDiscoveryMap[gv] {
+				versionsForDiscoveryMap[gv] = true
+				apiVersionsForDiscovery = append(apiVersionsForDiscovery, metav1.GroupVersionForDiscovery{
+					GroupVersion: crd.Spec.Group + "/" + v.Name,
+					Version:      v.Name,
+				})
+			}
+			if v.Name == version.Version {
+				foundThisVersion = true
+			}
+		}
+
+		if !foundThisVersion {
+			continue
+		}
+		foundVersion = true
+
+		verbs := metav1.Verbs([]string{"delete", "deletecollection", "get", "list", "patch", "create", "update", "watch"})
+		// if we're terminating we don't allow some verbs
+		if apiextensions.IsCRDConditionTrue(crd, apiextensions.Terminating) {
+			verbs = metav1.Verbs([]string{"delete", "deletecollection", "get", "list", "watch"})
+		}
+
+		apiResourcesForDiscovery = append(apiResourcesForDiscovery, metav1.APIResource{
+			Name:         crd.Status.AcceptedNames.Plural,
+			SingularName: crd.Status.AcceptedNames.Singular,
+			Namespaced:   crd.Spec.Scope == apiextensions.NamespaceScoped,
+			Kind:         crd.Status.AcceptedNames.Kind,
+			Verbs:        verbs,
+			ShortNames:   crd.Status.AcceptedNames.ShortNames,
+			Categories:   crd.Status.AcceptedNames.Categories,
+		})
+
+		if crd.Spec.Subresources != nil && crd.Spec.Subresources.Status != nil {
+			apiResourcesForDiscovery = append(apiResourcesForDiscovery, metav1.APIResource{
+				Name:       crd.Status.AcceptedNames.Plural + "/status",
+				Namespaced: crd.Spec.Scope == apiextensions.NamespaceScoped,
+				Kind:       crd.Status.AcceptedNames.Kind,
+				Verbs:      metav1.Verbs([]string{"get", "patch", "update"}),
+			})
+		}
+
+		if crd.Spec.Subresources != nil && crd.Spec.Subresources.Scale != nil {
+			apiResourcesForDiscovery = append(apiResourcesForDiscovery, metav1.APIResource{
+				Group:      autoscaling.GroupName,
+				Version:    "v1",
+				Kind:       "Scale",
+				Name:       crd.Status.AcceptedNames.Plural + "/scale",
+				Namespaced: crd.Spec.Scope == apiextensions.NamespaceScoped,
+				Verbs:      metav1.Verbs([]string{"get", "patch", "update"}),
+			})
+		}
+	}
+
+	if !foundGroup {
+		c.groupHandler.unsetDiscovery(version.Group)
+		c.versionHandler.unsetDiscovery(version)
+		return nil
+	}
+
+	sortGroupDiscoveryByKubeAwareVersion(apiVersionsForDiscovery)
+
+	apiGroup := metav1.APIGroup{
+		Name:     version.Group,
+		Versions: apiVersionsForDiscovery,
+		// the preferred versions for a group is the first item in
+		// apiVersionsForDiscovery after it put in the right ordered
+		PreferredVersion: apiVersionsForDiscovery[0],
+	}
+	c.groupHandler.setDiscovery(version.Group, discovery.NewAPIGroupHandler(Codecs, apiGroup))
+
+	if !foundVersion {
+		c.versionHandler.unsetDiscovery(version)
+		return nil
+	}
+	c.versionHandler.setDiscovery(version, discovery.NewAPIVersionHandler(Codecs, version, discovery.APIResourceListerFunc(func() []metav1.APIResource {
+		return apiResourcesForDiscovery
+	})))
+
+	return nil
+}
+
+func sortGroupDiscoveryByKubeAwareVersion(gd []metav1.GroupVersionForDiscovery) {
+	sort.Slice(gd, func(i, j int) bool {
+		return version.CompareKubeAwareVersionStrings(gd[i].Version, gd[j].Version) > 0
+	})
+}
+
+func (c *DiscoveryController) Run(stopCh <-chan struct{}) {
+	defer utilruntime.HandleCrash()
+	defer c.queue.ShutDown()
+	defer glog.Infof("Shutting down DiscoveryController")
+
+	glog.Infof("Starting DiscoveryController")
+
+	if !cache.WaitForCacheSync(stopCh, c.crdsSynced) {
+		utilruntime.HandleError(fmt.Errorf("timed out waiting for caches to sync"))
+		return
+	}
+
+	// only start one worker thread since its a slow moving API
+	go wait.Until(c.runWorker, time.Second, stopCh)
+
+	<-stopCh
+}
+
+func (c *DiscoveryController) runWorker() {
+	for c.processNextWorkItem() {
+	}
+}
+
+// processNextWorkItem deals with one key off the queue.  It returns false when it's time to quit.
+func (c *DiscoveryController) processNextWorkItem() bool {
+	key, quit := c.queue.Get()
+	if quit {
+		return false
+	}
+	defer c.queue.Done(key)
+
+	err := c.syncFn(key.(schema.GroupVersion))
+	if err == nil {
+		c.queue.Forget(key)
+		return true
+	}
+
+	utilruntime.HandleError(fmt.Errorf("%v failed with: %v", key, err))
+	c.queue.AddRateLimited(key)
+
+	return true
+}
+
+func (c *DiscoveryController) enqueue(obj *apiextensions.CustomResourceDefinition) {
+	for _, v := range obj.Spec.Versions {
+		c.queue.Add(schema.GroupVersion{Group: obj.Spec.Group, Version: v.Name})
+	}
+}
+
+func (c *DiscoveryController) addCustomResourceDefinition(obj interface{}) {
+	castObj := obj.(*apiextensions.CustomResourceDefinition)
+	glog.V(4).Infof("Adding customresourcedefinition %s", castObj.Name)
+	c.enqueue(castObj)
+}
+
+func (c *DiscoveryController) updateCustomResourceDefinition(oldObj, newObj interface{}) {
+	castNewObj := newObj.(*apiextensions.CustomResourceDefinition)
+	castOldObj := oldObj.(*apiextensions.CustomResourceDefinition)
+	glog.V(4).Infof("Updating customresourcedefinition %s", castOldObj.Name)
+	// Enqueue both old and new object to make sure we remove and add appropriate Versions.
+	// The working queue will resolve any duplicates and only changes will stay in the queue.
+	c.enqueue(castNewObj)
+	c.enqueue(castOldObj)
+}
+
+func (c *DiscoveryController) deleteCustomResourceDefinition(obj interface{}) {
+	castObj, ok := obj.(*apiextensions.CustomResourceDefinition)
+	if !ok {
+		tombstone, ok := obj.(cache.DeletedFinalStateUnknown)
+		if !ok {
+			glog.Errorf("Couldn't get object from tombstone %#v", obj)
+			return
+		}
+		castObj, ok = tombstone.Obj.(*apiextensions.CustomResourceDefinition)
+		if !ok {
+			glog.Errorf("Tombstone contained object that is not expected %#v", obj)
+			return
+		}
+	}
+	glog.V(4).Infof("Deleting customresourcedefinition %q", castObj.Name)
+	c.enqueue(castObj)
+}