Roll back pkg client code for Velero server

Signed-off-by: danfengl <danfengl@vmware.com>

test/e2e/pkg/client/dynamic.go

@@ -0,0 +1,141 @@
+/*
+Copyright 2017 the Velero contributors.
+
+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"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"k8s.io/apimachinery/pkg/types"
+	"k8s.io/apimachinery/pkg/watch"
+	"k8s.io/client-go/dynamic"
+)
+
+// DynamicFactory contains methods for retrieving dynamic clients for GroupVersionResources and
+// GroupVersionKinds.
+type DynamicFactory interface {
+	// ClientForGroupVersionResource returns a Dynamic client for the given group/version
+	// and resource for the given namespace.
+	ClientForGroupVersionResource(gv schema.GroupVersion, resource metav1.APIResource, namespace string) (Dynamic, error)
+}
+
+// dynamicFactory implements DynamicFactory.
+type dynamicFactory struct {
+	dynamicClient dynamic.Interface
+}
+
+// NewDynamicFactory returns a new ClientPool-based dynamic factory.
+func NewDynamicFactory(dynamicClient dynamic.Interface) DynamicFactory {
+	return &dynamicFactory{dynamicClient: dynamicClient}
+}
+
+func (f *dynamicFactory) ClientForGroupVersionResource(gv schema.GroupVersion, resource metav1.APIResource, namespace string) (Dynamic, error) {
+	return &dynamicResourceClient{
+		resourceClient: f.dynamicClient.Resource(gv.WithResource(resource.Name)).Namespace(namespace),
+	}, nil
+}
+
+// Creator creates an object.
+type Creator interface {
+	// Create creates an object.
+	Create(obj *unstructured.Unstructured) (*unstructured.Unstructured, error)
+}
+
+// Lister lists objects.
+type Lister interface {
+	// List lists all the objects of a given resource.
+	List(metav1.ListOptions) (*unstructured.UnstructuredList, error)
+}
+
+// Watcher watches objects.
+type Watcher interface {
+	// Watch watches for changes to objects of a given resource.
+	Watch(metav1.ListOptions) (watch.Interface, error)
+}
+
+// Getter gets an object.
+type Getter interface {
+	// Get fetches an object by name.
+	Get(name string, opts metav1.GetOptions) (*unstructured.Unstructured, error)
+}
+
+// Patcher patches an object.
+type Patcher interface {
+	//Patch patches the named object using the provided patch bytes, which are expected to be in JSON merge patch format. The patched object is returned.
+
+	Patch(name string, data []byte) (*unstructured.Unstructured, error)
+}
+
+// Deletor deletes an object.
+type Deletor interface {
+	//Patch patches the named object using the provided patch bytes, which are expected to be in JSON merge patch format. The patched object is returned.
+
+	Delete(name string, opts metav1.DeleteOptions) error
+}
+
+// StatusUpdater updates status field of a object
+type StatusUpdater interface {
+	UpdateStatus(obj *unstructured.Unstructured, opts metav1.UpdateOptions) (*unstructured.Unstructured, error)
+}
+
+// Dynamic contains client methods that Velero needs for backing up and restoring resources.
+type Dynamic interface {
+	Creator
+	Lister
+	Watcher
+	Getter
+	Patcher
+	Deletor
+	StatusUpdater
+}
+
+// dynamicResourceClient implements Dynamic.
+type dynamicResourceClient struct {
+	resourceClient dynamic.ResourceInterface
+}
+
+var _ Dynamic = &dynamicResourceClient{}
+
+func (d *dynamicResourceClient) Create(obj *unstructured.Unstructured) (*unstructured.Unstructured, error) {
+	return d.resourceClient.Create(context.TODO(), obj, metav1.CreateOptions{})
+}
+
+func (d *dynamicResourceClient) List(options metav1.ListOptions) (*unstructured.UnstructuredList, error) {
+	return d.resourceClient.List(context.TODO(), options)
+}
+
+func (d *dynamicResourceClient) Watch(options metav1.ListOptions) (watch.Interface, error) {
+	return d.resourceClient.Watch(context.TODO(), options)
+}
+
+func (d *dynamicResourceClient) Get(name string, opts metav1.GetOptions) (*unstructured.Unstructured, error) {
+	return d.resourceClient.Get(context.TODO(), name, opts)
+}
+
+func (d *dynamicResourceClient) Patch(name string, data []byte) (*unstructured.Unstructured, error) {
+	return d.resourceClient.Patch(context.TODO(), name, types.MergePatchType, data, metav1.PatchOptions{})
+}
+
+func (d *dynamicResourceClient) Delete(name string, opts metav1.DeleteOptions) error {
+	return d.resourceClient.Delete(context.TODO(), name, opts)
+}
+
+func (d *dynamicResourceClient) UpdateStatus(obj *unstructured.Unstructured, opts metav1.UpdateOptions) (*unstructured.Unstructured, error) {
+	return d.resourceClient.UpdateStatus(context.TODO(), obj, opts)
+}