remove the top-level folders for versions

remove scripts

plugin/pkg/client/auth/gcp/gcp.go

@@ -0,0 +1,105 @@
+/*
+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 gcp
+
+import (
+	"net/http"
+	"time"
+
+	"github.com/golang/glog"
+	"golang.org/x/net/context"
+	"golang.org/x/oauth2"
+	"golang.org/x/oauth2/google"
+	"k8s.io/client-go/1.5/rest"
+)
+
+func init() {
+	if err := rest.RegisterAuthProviderPlugin("gcp", newGCPAuthProvider); err != nil {
+		glog.Fatalf("Failed to register gcp auth plugin: %v", err)
+	}
+}
+
+type gcpAuthProvider struct {
+	tokenSource oauth2.TokenSource
+	persister   rest.AuthProviderConfigPersister
+}
+
+func newGCPAuthProvider(_ string, gcpConfig map[string]string, persister rest.AuthProviderConfigPersister) (rest.AuthProvider, error) {
+	ts, err := newCachedTokenSource(gcpConfig["access-token"], gcpConfig["expiry"], persister)
+	if err != nil {
+		return nil, err
+	}
+	return &gcpAuthProvider{ts, persister}, nil
+}
+
+func (g *gcpAuthProvider) WrapTransport(rt http.RoundTripper) http.RoundTripper {
+	return &oauth2.Transport{
+		Source: g.tokenSource,
+		Base:   rt,
+	}
+}
+
+func (g *gcpAuthProvider) Login() error { return nil }
+
+type cachedTokenSource struct {
+	source      oauth2.TokenSource
+	accessToken string
+	expiry      time.Time
+	persister   rest.AuthProviderConfigPersister
+}
+
+func newCachedTokenSource(accessToken, expiry string, persister rest.AuthProviderConfigPersister) (*cachedTokenSource, error) {
+	var expiryTime time.Time
+	if parsedTime, err := time.Parse(time.RFC3339Nano, expiry); err == nil {
+		expiryTime = parsedTime
+	}
+	ts, err := google.DefaultTokenSource(context.Background(), "https://www.googleapis.com/auth/cloud-platform")
+	if err != nil {
+		return nil, err
+	}
+	return &cachedTokenSource{
+		source:      ts,
+		accessToken: accessToken,
+		expiry:      expiryTime,
+		persister:   persister,
+	}, nil
+}
+
+func (t *cachedTokenSource) Token() (*oauth2.Token, error) {
+	tok := &oauth2.Token{
+		AccessToken: t.accessToken,
+		TokenType:   "Bearer",
+		Expiry:      t.expiry,
+	}
+	if tok.Valid() && !tok.Expiry.IsZero() {
+		return tok, nil
+	}
+	tok, err := t.source.Token()
+	if err != nil {
+		return nil, err
+	}
+	if t.persister != nil {
+		cached := map[string]string{
+			"access-token": tok.AccessToken,
+			"expiry":       tok.Expiry.Format(time.RFC3339Nano),
+		}
+		if err := t.persister.Persist(cached); err != nil {
+			glog.V(4).Infof("Failed to persist token: %v", err)
+		}
+	}
+	return tok, nil
+}