Merge pull request #52753 from munnerz/sample-controller

Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

sample-controller: add example CRD controller

**What this PR does / why we need it**:

Adds a sample-controller example repository

fixes #52752

**Special notes for your reviewer**:

This is currently based on the sttts:sttts-codegen-scripts branch and should not be merged until that is (ref https://github.com/kubernetes/kubernetes/pull/52186)

**Release note**:

```
Add sample-controller repository
```

/cc @sttts @nikhita @colemickens

Kubernetes-commit: 9a7800f7d2efb88b397674672ac56f898826cf7c

vendor/k8s.io/client-go/informers/apps/v1beta2/controllerrevision.go

@@ -0,0 +1,73 @@
+/*
+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.
+*/
+
+// This file was automatically generated by informer-gen
+
+package v1beta2
+
+import (
+	apps_v1beta2 "k8s.io/api/apps/v1beta2"
+	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	runtime "k8s.io/apimachinery/pkg/runtime"
+	watch "k8s.io/apimachinery/pkg/watch"
+	internalinterfaces "k8s.io/client-go/informers/internalinterfaces"
+	kubernetes "k8s.io/client-go/kubernetes"
+	v1beta2 "k8s.io/client-go/listers/apps/v1beta2"
+	cache "k8s.io/client-go/tools/cache"
+	time "time"
+)
+
+// ControllerRevisionInformer provides access to a shared informer and lister for
+// ControllerRevisions.
+type ControllerRevisionInformer interface {
+	Informer() cache.SharedIndexInformer
+	Lister() v1beta2.ControllerRevisionLister
+}
+
+type controllerRevisionInformer struct {
+	factory internalinterfaces.SharedInformerFactory
+}
+
+// NewControllerRevisionInformer constructs a new informer for ControllerRevision type.
+// Always prefer using an informer factory to get a shared informer instead of getting an independent
+// one. This reduces memory footprint and number of connections to the server.
+func NewControllerRevisionInformer(client kubernetes.Interface, namespace string, resyncPeriod time.Duration, indexers cache.Indexers) cache.SharedIndexInformer {
+	return cache.NewSharedIndexInformer(
+		&cache.ListWatch{
+			ListFunc: func(options v1.ListOptions) (runtime.Object, error) {
+				return client.AppsV1beta2().ControllerRevisions(namespace).List(options)
+			},
+			WatchFunc: func(options v1.ListOptions) (watch.Interface, error) {
+				return client.AppsV1beta2().ControllerRevisions(namespace).Watch(options)
+			},
+		},
+		&apps_v1beta2.ControllerRevision{},
+		resyncPeriod,
+		indexers,
+	)
+}
+
+func defaultControllerRevisionInformer(client kubernetes.Interface, resyncPeriod time.Duration) cache.SharedIndexInformer {
+	return NewControllerRevisionInformer(client, v1.NamespaceAll, resyncPeriod, cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc})
+}
+
+func (f *controllerRevisionInformer) Informer() cache.SharedIndexInformer {
+	return f.factory.InformerFor(&apps_v1beta2.ControllerRevision{}, defaultControllerRevisionInformer)
+}
+
+func (f *controllerRevisionInformer) Lister() v1beta2.ControllerRevisionLister {
+	return v1beta2.NewControllerRevisionLister(f.Informer().GetIndexer())
+}