Import of https://github.com/ciena/voltctl at commit 40d61fbf3f910ed4017cf67c9c79e8e1f82a33a5
Change-Id: I8464c59e60d76cb8612891db3303878975b5416c
diff --git a/vendor/k8s.io/client-go/rest/plugin.go b/vendor/k8s.io/client-go/rest/plugin.go
new file mode 100644
index 0000000..83ef5ae
--- /dev/null
+++ b/vendor/k8s.io/client-go/rest/plugin.go
@@ -0,0 +1,73 @@
+/*
+Copyright 2016 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 rest
+
+import (
+ "fmt"
+ "net/http"
+ "sync"
+
+ "k8s.io/klog"
+
+ clientcmdapi "k8s.io/client-go/tools/clientcmd/api"
+)
+
+type AuthProvider interface {
+ // WrapTransport allows the plugin to create a modified RoundTripper that
+ // attaches authorization headers (or other info) to requests.
+ WrapTransport(http.RoundTripper) http.RoundTripper
+ // Login allows the plugin to initialize its configuration. It must not
+ // require direct user interaction.
+ Login() error
+}
+
+// Factory generates an AuthProvider plugin.
+// clusterAddress is the address of the current cluster.
+// config is the initial configuration for this plugin.
+// persister allows the plugin to save updated configuration.
+type Factory func(clusterAddress string, config map[string]string, persister AuthProviderConfigPersister) (AuthProvider, error)
+
+// AuthProviderConfigPersister allows a plugin to persist configuration info
+// for just itself.
+type AuthProviderConfigPersister interface {
+ Persist(map[string]string) error
+}
+
+// All registered auth provider plugins.
+var pluginsLock sync.Mutex
+var plugins = make(map[string]Factory)
+
+func RegisterAuthProviderPlugin(name string, plugin Factory) error {
+ pluginsLock.Lock()
+ defer pluginsLock.Unlock()
+ if _, found := plugins[name]; found {
+ return fmt.Errorf("Auth Provider Plugin %q was registered twice", name)
+ }
+ klog.V(4).Infof("Registered Auth Provider Plugin %q", name)
+ plugins[name] = plugin
+ return nil
+}
+
+func GetAuthProvider(clusterAddress string, apc *clientcmdapi.AuthProviderConfig, persister AuthProviderConfigPersister) (AuthProvider, error) {
+ pluginsLock.Lock()
+ defer pluginsLock.Unlock()
+ p, ok := plugins[apc.Name]
+ if !ok {
+ return nil, fmt.Errorf("No Auth Provider found for name %q", apc.Name)
+ }
+ return p(clusterAddress, apc.Config, persister)
+}