add an adaption function to adapt old client

pkg/client/clientset_generated/release_1_1/clientset_adaption.go

@@ -0,0 +1,42 @@
+/*
+Copyright 2016 The Kubernetes Authors All rights reserved.
+
+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 release_1_1
+
+import (
+	extensions_unversioned "k8s.io/kubernetes/pkg/client/typed/generated/extensions/unversioned"
+	legacy_unversioned "k8s.io/kubernetes/pkg/client/typed/generated/legacy/unversioned"
+	"k8s.io/kubernetes/pkg/client/unversioned"
+)
+
+// AdaptOldClient adapts a pkg/client/unversioned#Client to a Clientset.
+// This function is temporary. We will remove it when everyone has moved to using
+// Clientset. New code should NOT use this function.
+func AdaptOldClient(c *unversioned.Client) *Clientset {
+	var clientset Clientset
+	if c != nil {
+		clientset.LegacyClient = legacy_unversioned.New(c.RESTClient)
+	} else {
+		clientset.LegacyClient = legacy_unversioned.New(nil)
+	}
+	if c != nil && c.ExtensionsClient != nil {
+		clientset.ExtensionsClient = extensions_unversioned.New(c.ExtensionsClient.RESTClient)
+	} else {
+		clientset.ExtensionsClient = extensions_unversioned.New(nil)
+	}
+
+	return &clientset
+}