Add glide.yaml and vendor deps

vendor/k8s.io/kubernetes/plugin/pkg/client/auth/BUILD

@@ -0,0 +1,21 @@
+package(default_visibility = ["//visibility:public"])
+
+licenses(["notice"])
+
+load(
+    "@io_bazel_rules_go//go:def.bzl",
+    "go_binary",
+    "go_library",
+    "go_test",
+    "cgo_library",
+)
+
+go_library(
+    name = "go_default_library",
+    srcs = ["plugins.go"],
+    tags = ["automanaged"],
+    deps = [
+        "//plugin/pkg/client/auth/gcp:go_default_library",
+        "//plugin/pkg/client/auth/oidc:go_default_library",
+    ],
+)

vendor/k8s.io/kubernetes/plugin/pkg/client/auth/gcp/BUILD

@@ -0,0 +1,34 @@
+package(default_visibility = ["//visibility:public"])
+
+licenses(["notice"])
+
+load(
+    "@io_bazel_rules_go//go:def.bzl",
+    "go_binary",
+    "go_library",
+    "go_test",
+    "cgo_library",
+)
+
+go_library(
+    name = "go_default_library",
+    srcs = ["gcp.go"],
+    tags = ["automanaged"],
+    deps = [
+        "//pkg/client/restclient:go_default_library",
+        "//pkg/util/jsonpath:go_default_library",
+        "//pkg/util/yaml:go_default_library",
+        "//vendor:github.com/golang/glog",
+        "//vendor:golang.org/x/net/context",
+        "//vendor:golang.org/x/oauth2",
+        "//vendor:golang.org/x/oauth2/google",
+    ],
+)
+
+go_test(
+    name = "go_default_test",
+    srcs = ["gcp_test.go"],
+    library = "go_default_library",
+    tags = ["automanaged"],
+    deps = ["//vendor:golang.org/x/oauth2"],
+)

vendor/k8s.io/kubernetes/plugin/pkg/client/auth/gcp/OWNERS

@@ -0,0 +1,3 @@
+assignees:
+  - cjcullen
+  - jlowdermilk

vendor/k8s.io/kubernetes/plugin/pkg/client/auth/gcp/gcp.go

@@ -0,0 +1,274 @@
+/*
+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 (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"os/exec"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/golang/glog"
+	"golang.org/x/net/context"
+	"golang.org/x/oauth2"
+	"golang.org/x/oauth2/google"
+	"k8s.io/kubernetes/pkg/client/restclient"
+	"k8s.io/kubernetes/pkg/util/jsonpath"
+	"k8s.io/kubernetes/pkg/util/yaml"
+)
+
+func init() {
+	if err := restclient.RegisterAuthProviderPlugin("gcp", newGCPAuthProvider); err != nil {
+		glog.Fatalf("Failed to register gcp auth plugin: %v", err)
+	}
+}
+
+// gcpAuthProvider is an auth provider plugin that uses GCP credentials to provide
+// tokens for kubectl to authenticate itself to the apiserver. A sample json config
+// is provided below with all recognized options described.
+//
+// {
+//   'auth-provider': {
+//     # Required
+//     "name": "gcp",
+//
+//     'config': {
+//       # Caching options
+//
+//       # Raw string data representing cached access token.
+//       "access-token": "ya29.CjWdA4GiBPTt",
+//       # RFC3339Nano expiration timestamp for cached access token.
+//       "expiry": "2016-10-31 22:31:9.123",
+//
+//       # Command execution options
+//       # These options direct the plugin to execute a specified command and parse
+//       # token and expiry time from the output of the command.
+//
+//       # Command to execute for access token. String is split on whitespace
+//       # with first field treated as the executable, remaining fields as args.
+//       # Command output will be parsed as JSON.
+//       "cmd-path": "/usr/bin/gcloud config config-helper --output=json",
+//
+//       # JSONPath to the string field that represents the access token in
+//       # command output. If omitted, defaults to "{.access_token}".
+//       "token-key": "{.credential.access_token}",
+//
+//       # JSONPath to the string field that represents expiration timestamp
+//       # of the access token in the command output. If omitted, defaults to
+//       # "{.token_expiry}"
+//       "expiry-key": ""{.credential.token_expiry}",
+//
+//       # golang reference time in the format that the expiration timestamp uses.
+//       # If omitted, defaults to time.RFC3339Nano
+//       "time-fmt": "2006-01-02 15:04:05.999999999"
+//     }
+//   }
+// }
+//
+type gcpAuthProvider struct {
+	tokenSource oauth2.TokenSource
+	persister   restclient.AuthProviderConfigPersister
+}
+
+func newGCPAuthProvider(_ string, gcpConfig map[string]string, persister restclient.AuthProviderConfigPersister) (restclient.AuthProvider, error) {
+	cmd, useCmd := gcpConfig["cmd-path"]
+	var ts oauth2.TokenSource
+	var err error
+	if useCmd {
+		ts, err = newCmdTokenSource(cmd, gcpConfig["token-key"], gcpConfig["expiry-key"], gcpConfig["time-fmt"])
+	} else {
+		ts, err = google.DefaultTokenSource(context.Background(), "https://www.googleapis.com/auth/cloud-platform")
+	}
+	if err != nil {
+		return nil, err
+	}
+	cts, err := newCachedTokenSource(gcpConfig["access-token"], gcpConfig["expiry"], persister, ts, gcpConfig)
+	if err != nil {
+		return nil, err
+	}
+	return &gcpAuthProvider{cts, 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 {
+	lk          sync.Mutex
+	source      oauth2.TokenSource
+	accessToken string
+	expiry      time.Time
+	persister   restclient.AuthProviderConfigPersister
+	cache       map[string]string
+}
+
+func newCachedTokenSource(accessToken, expiry string, persister restclient.AuthProviderConfigPersister, ts oauth2.TokenSource, cache map[string]string) (*cachedTokenSource, error) {
+	var expiryTime time.Time
+	if parsedTime, err := time.Parse(time.RFC3339Nano, expiry); err == nil {
+		expiryTime = parsedTime
+	}
+	if cache == nil {
+		cache = make(map[string]string)
+	}
+	return &cachedTokenSource{
+		source:      ts,
+		accessToken: accessToken,
+		expiry:      expiryTime,
+		persister:   persister,
+		cache:       cache,
+	}, nil
+}
+
+func (t *cachedTokenSource) Token() (*oauth2.Token, error) {
+	tok := t.cachedToken()
+	if tok.Valid() && !tok.Expiry.IsZero() {
+		return tok, nil
+	}
+	tok, err := t.source.Token()
+	if err != nil {
+		return nil, err
+	}
+	cache := t.update(tok)
+	if t.persister != nil {
+		if err := t.persister.Persist(cache); err != nil {
+			glog.V(4).Infof("Failed to persist token: %v", err)
+		}
+	}
+	return tok, nil
+}
+
+func (t *cachedTokenSource) cachedToken() *oauth2.Token {
+	t.lk.Lock()
+	defer t.lk.Unlock()
+	return &oauth2.Token{
+		AccessToken: t.accessToken,
+		TokenType:   "Bearer",
+		Expiry:      t.expiry,
+	}
+}
+
+func (t *cachedTokenSource) update(tok *oauth2.Token) map[string]string {
+	t.lk.Lock()
+	defer t.lk.Unlock()
+	t.accessToken = tok.AccessToken
+	t.expiry = tok.Expiry
+	ret := map[string]string{}
+	for k, v := range t.cache {
+		ret[k] = v
+	}
+	ret["access-token"] = t.accessToken
+	ret["expiry"] = t.expiry.Format(time.RFC3339Nano)
+	return ret
+}
+
+type commandTokenSource struct {
+	cmd       string
+	args      []string
+	tokenKey  string
+	expiryKey string
+	timeFmt   string
+}
+
+func newCmdTokenSource(cmd, tokenKey, expiryKey, timeFmt string) (*commandTokenSource, error) {
+	if len(timeFmt) == 0 {
+		timeFmt = time.RFC3339Nano
+	}
+	if len(tokenKey) == 0 {
+		tokenKey = "{.access_token}"
+	}
+	if len(expiryKey) == 0 {
+		expiryKey = "{.token_expiry}"
+	}
+	fields := strings.Fields(cmd)
+	if len(fields) == 0 {
+		return nil, fmt.Errorf("missing access token cmd")
+	}
+	return &commandTokenSource{
+		cmd:       fields[0],
+		args:      fields[1:],
+		tokenKey:  tokenKey,
+		expiryKey: expiryKey,
+		timeFmt:   timeFmt,
+	}, nil
+}
+
+func (c *commandTokenSource) Token() (*oauth2.Token, error) {
+	fullCmd := fmt.Sprintf("%s %s", c.cmd, strings.Join(c.args, " "))
+	cmd := exec.Command(c.cmd, c.args...)
+	output, err := cmd.Output()
+	if err != nil {
+		return nil, fmt.Errorf("error executing access token command %q: %v", fullCmd, err)
+	}
+	token, err := c.parseTokenCmdOutput(output)
+	if err != nil {
+		return nil, fmt.Errorf("error parsing output for access token command %q: %v", fullCmd, err)
+	}
+	return token, nil
+}
+
+func (c *commandTokenSource) parseTokenCmdOutput(output []byte) (*oauth2.Token, error) {
+	output, err := yaml.ToJSON(output)
+	if err != nil {
+		return nil, err
+	}
+	var data interface{}
+	if err := json.Unmarshal(output, &data); err != nil {
+		return nil, err
+	}
+
+	accessToken, err := parseJSONPath(data, "token-key", c.tokenKey)
+	if err != nil {
+		return nil, fmt.Errorf("error parsing token-key %q: %v", c.tokenKey, err)
+	}
+	expiryStr, err := parseJSONPath(data, "expiry-key", c.expiryKey)
+	if err != nil {
+		return nil, fmt.Errorf("error parsing expiry-key %q: %v", c.expiryKey, err)
+	}
+	var expiry time.Time
+	if t, err := time.Parse(c.timeFmt, expiryStr); err != nil {
+		glog.V(4).Infof("Failed to parse token expiry from %s (fmt=%s): %v", expiryStr, c.timeFmt, err)
+	} else {
+		expiry = t
+	}
+
+	return &oauth2.Token{
+		AccessToken: accessToken,
+		TokenType:   "Bearer",
+		Expiry:      expiry,
+	}, nil
+}
+
+func parseJSONPath(input interface{}, name, template string) (string, error) {
+	j := jsonpath.New(name)
+	buf := new(bytes.Buffer)
+	if err := j.Parse(template); err != nil {
+		return "", err
+	}
+	if err := j.Execute(buf, input); err != nil {
+		return "", err
+	}
+	return buf.String(), nil
+}

vendor/k8s.io/kubernetes/plugin/pkg/client/auth/gcp/gcp_test.go

@@ -0,0 +1,211 @@
+/*
+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 (
+	"fmt"
+	"reflect"
+	"strings"
+	"sync"
+	"testing"
+	"time"
+
+	"golang.org/x/oauth2"
+)
+
+func TestCmdTokenSource(t *testing.T) {
+	fakeExpiry := time.Date(2016, 10, 31, 22, 31, 9, 123000000, time.UTC)
+	customFmt := "2006-01-02 15:04:05.999999999"
+
+	tests := []struct {
+		name                              string
+		output                            []byte
+		cmd, tokenKey, expiryKey, timeFmt string
+		tok                               *oauth2.Token
+		expectErr                         error
+	}{
+		{
+			"defaults",
+			[]byte(`{
+  "access_token": "faketoken",
+  "token_expiry": "2016-10-31T22:31:09.123000000Z"
+}`),
+			"/fake/cmd/path", "", "", "",
+			&oauth2.Token{
+				AccessToken: "faketoken",
+				TokenType:   "Bearer",
+				Expiry:      fakeExpiry,
+			},
+			nil,
+		},
+		{
+			"custom keys",
+			[]byte(`{
+  "token": "faketoken",
+  "token_expiry": {
+    "datetime": "2016-10-31 22:31:09.123"
+  }
+}`),
+			"/fake/cmd/path", "{.token}", "{.token_expiry.datetime}", customFmt,
+			&oauth2.Token{
+				AccessToken: "faketoken",
+				TokenType:   "Bearer",
+				Expiry:      fakeExpiry,
+			},
+			nil,
+		},
+		{
+			"missing cmd",
+			nil,
+			"", "", "", "",
+			nil,
+			fmt.Errorf("missing access token cmd"),
+		},
+		{
+			"missing token-key",
+			[]byte(`{
+  "broken": "faketoken",
+  "token_expiry": {
+    "datetime": "2016-10-31 22:31:09.123000000Z"
+  }
+}`),
+			"/fake/cmd/path", "{.token}", "", "",
+			nil,
+			fmt.Errorf("error parsing token-key %q", "{.token}"),
+		},
+		{
+			"missing expiry-key",
+			[]byte(`{
+  "access_token": "faketoken",
+  "expires": "2016-10-31T22:31:09.123000000Z"
+}`),
+			"/fake/cmd/path", "", "{.expiry}", "",
+			nil,
+			fmt.Errorf("error parsing expiry-key %q", "{.expiry}"),
+		},
+		{
+			"invalid expiry timestamp",
+			[]byte(`{
+  "access_token": "faketoken",
+  "token_expiry": "sometime soon, idk"
+}`),
+			"/fake/cmd/path", "", "", "",
+			&oauth2.Token{
+				AccessToken: "faketoken",
+				TokenType:   "Bearer",
+				Expiry:      time.Time{},
+			},
+			nil,
+		},
+		{
+			"bad JSON",
+			[]byte(`{
+  "access_token": "faketoken",
+  "token_expiry": "sometime soon, idk"
+  ------
+`),
+			"/fake/cmd", "", "", "",
+			nil,
+			fmt.Errorf("invalid character '-' after object key:value pair"),
+		},
+	}
+
+	for _, tc := range tests {
+		ts, err := newCmdTokenSource(tc.cmd, tc.tokenKey, tc.expiryKey, tc.timeFmt)
+		if err != nil {
+			if !strings.Contains(err.Error(), tc.expectErr.Error()) {
+				t.Errorf("%s newCmdTokenSource error: %v, want %v", tc.name, err, tc.expectErr)
+			}
+			continue
+		}
+		tok, err := ts.parseTokenCmdOutput(tc.output)
+
+		if err != tc.expectErr && !strings.Contains(err.Error(), tc.expectErr.Error()) {
+			t.Errorf("%s parseCmdTokenSource error: %v, want %v", tc.name, err, tc.expectErr)
+		}
+		if !reflect.DeepEqual(tok, tc.tok) {
+			t.Errorf("%s got token %v, want %v", tc.name, tok, tc.tok)
+		}
+	}
+}
+
+type fakePersister struct {
+	lk    sync.Mutex
+	cache map[string]string
+}
+
+func (f *fakePersister) Persist(cache map[string]string) error {
+	f.lk.Lock()
+	defer f.lk.Unlock()
+	f.cache = map[string]string{}
+	for k, v := range cache {
+		f.cache[k] = v
+	}
+	return nil
+}
+
+func (f *fakePersister) read() map[string]string {
+	ret := map[string]string{}
+	f.lk.Lock()
+	for k, v := range f.cache {
+		ret[k] = v
+	}
+	return ret
+}
+
+type fakeTokenSource struct {
+	token *oauth2.Token
+	err   error
+}
+
+func (f *fakeTokenSource) Token() (*oauth2.Token, error) {
+	return f.token, f.err
+}
+
+func TestCachedTokenSource(t *testing.T) {
+	tok := &oauth2.Token{AccessToken: "fakeaccesstoken"}
+	persister := &fakePersister{}
+	source := &fakeTokenSource{
+		token: tok,
+		err:   nil,
+	}
+	cache := map[string]string{
+		"foo": "bar",
+		"baz": "bazinga",
+	}
+	ts, err := newCachedTokenSource("fakeaccesstoken", "", persister, source, cache)
+	if err != nil {
+		t.Fatal(err)
+	}
+	var wg sync.WaitGroup
+	wg.Add(10)
+	for i := 0; i < 10; i++ {
+		go func() {
+			_, err := ts.Token()
+			if err != nil {
+				t.Errorf("unexpected error: %s", err)
+			}
+			wg.Done()
+		}()
+	}
+	wg.Wait()
+	cache["access-token"] = "fakeaccesstoken"
+	cache["expiry"] = tok.Expiry.Format(time.RFC3339Nano)
+	if got := persister.read(); !reflect.DeepEqual(got, cache) {
+		t.Errorf("got cache %v, want %v", got, cache)
+	}
+}

vendor/k8s.io/kubernetes/plugin/pkg/client/auth/oidc/BUILD

@@ -0,0 +1,40 @@
+package(default_visibility = ["//visibility:public"])
+
+licenses(["notice"])
+
+load(
+    "@io_bazel_rules_go//go:def.bzl",
+    "go_binary",
+    "go_library",
+    "go_test",
+    "cgo_library",
+)
+
+go_library(
+    name = "go_default_library",
+    srcs = ["oidc.go"],
+    tags = ["automanaged"],
+    deps = [
+        "//pkg/client/restclient:go_default_library",
+        "//pkg/util/wait:go_default_library",
+        "//vendor:github.com/coreos/go-oidc/jose",
+        "//vendor:github.com/coreos/go-oidc/oauth2",
+        "//vendor:github.com/coreos/go-oidc/oidc",
+        "//vendor:github.com/golang/glog",
+    ],
+)
+
+go_test(
+    name = "go_default_test",
+    srcs = ["oidc_test.go"],
+    library = "go_default_library",
+    tags = ["automanaged"],
+    deps = [
+        "//pkg/util/diff:go_default_library",
+        "//pkg/util/wait:go_default_library",
+        "//plugin/pkg/auth/authenticator/token/oidc/testing:go_default_library",
+        "//vendor:github.com/coreos/go-oidc/jose",
+        "//vendor:github.com/coreos/go-oidc/key",
+        "//vendor:github.com/coreos/go-oidc/oauth2",
+    ],
+)

vendor/k8s.io/kubernetes/plugin/pkg/client/auth/oidc/OWNERS

@@ -0,0 +1,2 @@
+assignees:
+  - ericchiang

vendor/k8s.io/kubernetes/plugin/pkg/client/auth/oidc/oidc.go

@@ -0,0 +1,270 @@
+/*
+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 oidc
+
+import (
+	"encoding/base64"
+	"errors"
+	"fmt"
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/coreos/go-oidc/jose"
+	"github.com/coreos/go-oidc/oauth2"
+	"github.com/coreos/go-oidc/oidc"
+	"github.com/golang/glog"
+
+	"k8s.io/kubernetes/pkg/client/restclient"
+	"k8s.io/kubernetes/pkg/util/wait"
+)
+
+const (
+	cfgIssuerUrl                = "idp-issuer-url"
+	cfgClientID                 = "client-id"
+	cfgClientSecret             = "client-secret"
+	cfgCertificateAuthority     = "idp-certificate-authority"
+	cfgCertificateAuthorityData = "idp-certificate-authority-data"
+	cfgExtraScopes              = "extra-scopes"
+	cfgIDToken                  = "id-token"
+	cfgRefreshToken             = "refresh-token"
+)
+
+var (
+	backoff = wait.Backoff{
+		Duration: 1 * time.Second,
+		Factor:   2,
+		Jitter:   .1,
+		Steps:    5,
+	}
+)
+
+func init() {
+	if err := restclient.RegisterAuthProviderPlugin("oidc", newOIDCAuthProvider); err != nil {
+		glog.Fatalf("Failed to register oidc auth plugin: %v", err)
+	}
+}
+
+func newOIDCAuthProvider(_ string, cfg map[string]string, persister restclient.AuthProviderConfigPersister) (restclient.AuthProvider, error) {
+	issuer := cfg[cfgIssuerUrl]
+	if issuer == "" {
+		return nil, fmt.Errorf("Must provide %s", cfgIssuerUrl)
+	}
+
+	clientID := cfg[cfgClientID]
+	if clientID == "" {
+		return nil, fmt.Errorf("Must provide %s", cfgClientID)
+	}
+
+	clientSecret := cfg[cfgClientSecret]
+	if clientSecret == "" {
+		return nil, fmt.Errorf("Must provide %s", cfgClientSecret)
+	}
+
+	var certAuthData []byte
+	var err error
+	if cfg[cfgCertificateAuthorityData] != "" {
+		certAuthData, err = base64.StdEncoding.DecodeString(cfg[cfgCertificateAuthorityData])
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	clientConfig := restclient.Config{
+		TLSClientConfig: restclient.TLSClientConfig{
+			CAFile: cfg[cfgCertificateAuthority],
+			CAData: certAuthData,
+		},
+	}
+
+	trans, err := restclient.TransportFor(&clientConfig)
+	if err != nil {
+		return nil, err
+	}
+	hc := &http.Client{Transport: trans}
+
+	providerCfg, err := oidc.FetchProviderConfig(hc, issuer)
+	if err != nil {
+		return nil, fmt.Errorf("error fetching provider config: %v", err)
+	}
+
+	scopes := strings.Split(cfg[cfgExtraScopes], ",")
+	oidcCfg := oidc.ClientConfig{
+		HTTPClient: hc,
+		Credentials: oidc.ClientCredentials{
+			ID:     clientID,
+			Secret: clientSecret,
+		},
+		ProviderConfig: providerCfg,
+		Scope:          append(scopes, oidc.DefaultScope...),
+	}
+
+	client, err := oidc.NewClient(oidcCfg)
+	if err != nil {
+		return nil, fmt.Errorf("error creating OIDC Client: %v", err)
+	}
+
+	oClient := &oidcClient{client}
+
+	var initialIDToken jose.JWT
+	if cfg[cfgIDToken] != "" {
+		initialIDToken, err = jose.ParseJWT(cfg[cfgIDToken])
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	return &oidcAuthProvider{
+		initialIDToken: initialIDToken,
+		refresher: &idTokenRefresher{
+			client:    oClient,
+			cfg:       cfg,
+			persister: persister,
+		},
+	}, nil
+}
+
+type oidcAuthProvider struct {
+	refresher      *idTokenRefresher
+	initialIDToken jose.JWT
+}
+
+func (g *oidcAuthProvider) WrapTransport(rt http.RoundTripper) http.RoundTripper {
+	at := &oidc.AuthenticatedTransport{
+		TokenRefresher: g.refresher,
+		RoundTripper:   rt,
+	}
+	at.SetJWT(g.initialIDToken)
+	return &roundTripper{
+		wrapped:   at,
+		refresher: g.refresher,
+	}
+}
+
+func (g *oidcAuthProvider) Login() error {
+	return errors.New("not yet implemented")
+}
+
+type OIDCClient interface {
+	refreshToken(rt string) (oauth2.TokenResponse, error)
+	verifyJWT(jwt jose.JWT) error
+}
+
+type roundTripper struct {
+	refresher *idTokenRefresher
+	wrapped   *oidc.AuthenticatedTransport
+}
+
+func (r *roundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
+	var res *http.Response
+	var err error
+	firstTime := true
+	wait.ExponentialBackoff(backoff, func() (bool, error) {
+		if !firstTime {
+			var jwt jose.JWT
+			jwt, err = r.refresher.Refresh()
+			if err != nil {
+				return true, nil
+			}
+			r.wrapped.SetJWT(jwt)
+		} else {
+			firstTime = false
+		}
+
+		res, err = r.wrapped.RoundTrip(req)
+		if err != nil {
+			return true, nil
+		}
+		if res.StatusCode == http.StatusUnauthorized {
+			return false, nil
+		}
+		return true, nil
+	})
+	return res, err
+}
+
+type idTokenRefresher struct {
+	cfg           map[string]string
+	client        OIDCClient
+	persister     restclient.AuthProviderConfigPersister
+	intialIDToken jose.JWT
+}
+
+func (r *idTokenRefresher) Verify(jwt jose.JWT) error {
+	claims, err := jwt.Claims()
+	if err != nil {
+		return err
+	}
+
+	now := time.Now()
+	exp, ok, err := claims.TimeClaim("exp")
+	switch {
+	case err != nil:
+		return fmt.Errorf("failed to parse 'exp' claim: %v", err)
+	case !ok:
+		return errors.New("missing required 'exp' claim")
+	case exp.Before(now):
+		return fmt.Errorf("token already expired at: %v", exp)
+	}
+
+	return nil
+}
+
+func (r *idTokenRefresher) Refresh() (jose.JWT, error) {
+	rt, ok := r.cfg[cfgRefreshToken]
+	if !ok {
+		return jose.JWT{}, errors.New("No valid id-token, and cannot refresh without refresh-token")
+	}
+
+	tokens, err := r.client.refreshToken(rt)
+	if err != nil {
+		return jose.JWT{}, fmt.Errorf("could not refresh token: %v", err)
+	}
+	jwt, err := jose.ParseJWT(tokens.IDToken)
+	if err != nil {
+		return jose.JWT{}, err
+	}
+
+	if tokens.RefreshToken != "" && tokens.RefreshToken != rt {
+		r.cfg[cfgRefreshToken] = tokens.RefreshToken
+	}
+	r.cfg[cfgIDToken] = jwt.Encode()
+
+	err = r.persister.Persist(r.cfg)
+	if err != nil {
+		return jose.JWT{}, fmt.Errorf("could not perist new tokens: %v", err)
+	}
+
+	return jwt, r.client.verifyJWT(jwt)
+}
+
+type oidcClient struct {
+	client *oidc.Client
+}
+
+func (o *oidcClient) refreshToken(rt string) (oauth2.TokenResponse, error) {
+	oac, err := o.client.OAuthClient()
+	if err != nil {
+		return oauth2.TokenResponse{}, err
+	}
+
+	return oac.RequestToken(oauth2.GrantTypeRefreshToken, rt)
+}
+
+func (o *oidcClient) verifyJWT(jwt jose.JWT) error {
+	return o.client.VerifyJWT(jwt)
+}

vendor/k8s.io/kubernetes/plugin/pkg/client/auth/plugins.go

@@ -0,0 +1,23 @@
+/*
+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 auth
+
+import (
+	// Initialize all known client auth plugins.
+	_ "k8s.io/kubernetes/plugin/pkg/client/auth/gcp"
+	_ "k8s.io/kubernetes/plugin/pkg/client/auth/oidc"
+)