rebase: update controller-runtime package to v0.9.2

This commit updates controller-runtime to v0.9.2 and
makes changes in persistentvolume.go to add context to
various functions and function calls made here instead of
context.TODO().

Signed-off-by: Rakshith R <rar@redhat.com>

vendor/sigs.k8s.io/controller-runtime/pkg/client/watch.go

@@ -0,0 +1,118 @@
+/*
+Copyright 2020 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 client
+
+import (
+	"context"
+	"strings"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
+	"k8s.io/apimachinery/pkg/watch"
+	"k8s.io/client-go/dynamic"
+	"k8s.io/client-go/rest"
+)
+
+// NewWithWatch returns a new WithWatch.
+func NewWithWatch(config *rest.Config, options Options) (WithWatch, error) {
+	client, err := newClient(config, options)
+	if err != nil {
+		return nil, err
+	}
+	dynamicClient, err := dynamic.NewForConfig(config)
+	if err != nil {
+		return nil, err
+	}
+	return &watchingClient{client: client, dynamic: dynamicClient}, nil
+}
+
+type watchingClient struct {
+	*client
+	dynamic dynamic.Interface
+}
+
+func (w *watchingClient) Watch(ctx context.Context, list ObjectList, opts ...ListOption) (watch.Interface, error) {
+	switch l := list.(type) {
+	case *unstructured.UnstructuredList:
+		return w.unstructuredWatch(ctx, l, opts...)
+	case *metav1.PartialObjectMetadataList:
+		return w.metadataWatch(ctx, l, opts...)
+	default:
+		return w.typedWatch(ctx, l, opts...)
+	}
+}
+
+func (w *watchingClient) listOpts(opts ...ListOption) ListOptions {
+	listOpts := ListOptions{}
+	listOpts.ApplyOptions(opts)
+	if listOpts.Raw == nil {
+		listOpts.Raw = &metav1.ListOptions{}
+	}
+	listOpts.Raw.Watch = true
+
+	return listOpts
+}
+
+func (w *watchingClient) metadataWatch(ctx context.Context, obj *metav1.PartialObjectMetadataList, opts ...ListOption) (watch.Interface, error) {
+	gvk := obj.GroupVersionKind()
+	if strings.HasSuffix(gvk.Kind, "List") {
+		gvk.Kind = gvk.Kind[:len(gvk.Kind)-4]
+	}
+
+	listOpts := w.listOpts(opts...)
+
+	resInt, err := w.client.metadataClient.getResourceInterface(gvk, listOpts.Namespace)
+	if err != nil {
+		return nil, err
+	}
+
+	return resInt.Watch(ctx, *listOpts.AsListOptions())
+}
+
+func (w *watchingClient) unstructuredWatch(ctx context.Context, obj *unstructured.UnstructuredList, opts ...ListOption) (watch.Interface, error) {
+	gvk := obj.GroupVersionKind()
+	if strings.HasSuffix(gvk.Kind, "List") {
+		gvk.Kind = gvk.Kind[:len(gvk.Kind)-4]
+	}
+
+	r, err := w.client.unstructuredClient.cache.getResource(obj)
+	if err != nil {
+		return nil, err
+	}
+
+	listOpts := w.listOpts(opts...)
+
+	if listOpts.Namespace != "" && r.isNamespaced() {
+		return w.dynamic.Resource(r.mapping.Resource).Namespace(listOpts.Namespace).Watch(ctx, *listOpts.AsListOptions())
+	}
+	return w.dynamic.Resource(r.mapping.Resource).Watch(ctx, *listOpts.AsListOptions())
+}
+
+func (w *watchingClient) typedWatch(ctx context.Context, obj ObjectList, opts ...ListOption) (watch.Interface, error) {
+	r, err := w.client.typedClient.cache.getResource(obj)
+	if err != nil {
+		return nil, err
+	}
+
+	listOpts := w.listOpts(opts...)
+
+	return r.Get().
+		NamespaceIfScoped(listOpts.Namespace, r.isNamespaced()).
+		Resource(r.resource()).
+		VersionedParams(listOpts.AsListOptions(), w.client.typedClient.paramCodec).
+		Watch(ctx)
+}