Merge pull request #71020 from saad-ali/updateCSI10

Godeps/Godeps.json

@@ -811,9 +811,9 @@
 			"Rev": "20e2ce2cf8852dc78bd42b76698dcd8dcd77b7b1"
 		},
 		{
-			"ImportPath": "github.com/container-storage-interface/spec/lib/go/csi/v0",
-			"Comment": "v0.3.0",
-			"Rev": "2178fdeea87f1150a17a63252eee28d4d8141f72"
+			"ImportPath": "github.com/container-storage-interface/spec/lib/go/csi",
+			"Comment": "v1.0.0",
+			"Rev": "ed0bb0e1557548aa028307f48728767cfe8f6345"
 		},
 		{
 			"ImportPath": "github.com/containerd/console",
@@ -1808,6 +1808,11 @@
 			"Rev": "b4deda0973fb4c70b50d226b1af49f3da59f5265"
 		},
 		{
+			"ImportPath": "github.com/golang/protobuf/protoc-gen-go/descriptor",
+			"Comment": "v1.1.0",
+			"Rev": "b4deda0973fb4c70b50d226b1af49f3da59f5265"
+		},
+		{
 			"ImportPath": "github.com/golang/protobuf/ptypes",
 			"Comment": "v1.1.0",
 			"Rev": "b4deda0973fb4c70b50d226b1af49f3da59f5265"
@@ -3747,98 +3752,143 @@
 		},
 		{
 			"ImportPath": "google.golang.org/grpc",
-			"Comment": "v1.7.5",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Comment": "v1.13.0",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/balancer",
-			"Comment": "v1.7.5",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Comment": "v1.13.0",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/balancer/base",
+			"Comment": "v1.13.0",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/balancer/roundrobin",
+			"Comment": "v1.13.0",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/codes",
-			"Comment": "v1.7.5",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Comment": "v1.13.0",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/connectivity",
-			"Comment": "v1.7.5",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Comment": "v1.13.0",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/credentials",
-			"Comment": "v1.7.5",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Comment": "v1.13.0",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/encoding",
+			"Comment": "v1.13.0",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/encoding/proto",
+			"Comment": "v1.13.0",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/grpclb/grpc_lb_v1/messages",
-			"Comment": "v1.7.5",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Comment": "v1.13.0",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/grpclog",
-			"Comment": "v1.7.5",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Comment": "v1.13.0",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/health",
-			"Comment": "v1.7.5",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Comment": "v1.13.0",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/health/grpc_health_v1",
-			"Comment": "v1.7.5",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Comment": "v1.13.0",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/internal",
-			"Comment": "v1.7.5",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Comment": "v1.13.0",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/internal/backoff",
+			"Comment": "v1.13.0",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/internal/channelz",
+			"Comment": "v1.13.0",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/internal/grpcrand",
+			"Comment": "v1.13.0",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/keepalive",
-			"Comment": "v1.7.5",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Comment": "v1.13.0",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/metadata",
-			"Comment": "v1.7.5",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Comment": "v1.13.0",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/naming",
-			"Comment": "v1.7.5",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Comment": "v1.13.0",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/peer",
-			"Comment": "v1.7.5",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Comment": "v1.13.0",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/resolver",
-			"Comment": "v1.7.5",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Comment": "v1.13.0",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/resolver/dns",
+			"Comment": "v1.13.0",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/resolver/passthrough",
+			"Comment": "v1.13.0",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/stats",
-			"Comment": "v1.7.5",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Comment": "v1.13.0",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/status",
-			"Comment": "v1.7.5",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Comment": "v1.13.0",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/tap",
-			"Comment": "v1.7.5",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Comment": "v1.13.0",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/transport",
-			"Comment": "v1.7.5",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Comment": "v1.13.0",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "gopkg.in/gcfg.v1",

pkg/volume/csi/BUILD

@@ -30,7 +30,7 @@ go_library(
         "//staging/src/k8s.io/csi-api/pkg/client/informers/externalversions:go_default_library",
         "//staging/src/k8s.io/csi-api/pkg/client/informers/externalversions/csi/v1alpha1:go_default_library",
         "//staging/src/k8s.io/csi-api/pkg/client/listers/csi/v1alpha1:go_default_library",
-        "//vendor/github.com/container-storage-interface/spec/lib/go/csi/v0:go_default_library",
+        "//vendor/github.com/container-storage-interface/spec/lib/go/csi:go_default_library",
         "//vendor/google.golang.org/grpc:go_default_library",
         "//vendor/k8s.io/klog:go_default_library",
     ],
@@ -69,7 +69,7 @@ go_test(
         "//staging/src/k8s.io/client-go/util/testing:go_default_library",
         "//staging/src/k8s.io/csi-api/pkg/apis/csi/v1alpha1:go_default_library",
         "//staging/src/k8s.io/csi-api/pkg/client/clientset/versioned/fake:go_default_library",
-        "//vendor/github.com/container-storage-interface/spec/lib/go/csi/v0:go_default_library",
+        "//vendor/github.com/container-storage-interface/spec/lib/go/csi:go_default_library",
         "//vendor/k8s.io/klog:go_default_library",
     ],
 )

pkg/volume/csi/csi_attacher.go

@@ -29,7 +29,7 @@ import (
 
 	"k8s.io/klog"
 
-	csipb "github.com/container-storage-interface/spec/lib/go/csi/v0"
+	csipb "github.com/container-storage-interface/spec/lib/go/csi"
 	"k8s.io/api/core/v1"
 	storage "k8s.io/api/storage/v1beta1"
 	apierrs "k8s.io/apimachinery/pkg/api/errors"

pkg/volume/csi/csi_client.go

@@ -24,7 +24,7 @@ import (
 	"net"
 	"time"
 
-	csipb "github.com/container-storage-interface/spec/lib/go/csi/v0"
+	csipb "github.com/container-storage-interface/spec/lib/go/csi"
 	"google.golang.org/grpc"
 	api "k8s.io/api/core/v1"
 	utilfeature "k8s.io/apiserver/pkg/util/feature"
@@ -46,8 +46,8 @@ type csiClient interface {
 		targetPath string,
 		accessMode api.PersistentVolumeAccessMode,
 		volumeInfo map[string]string,
-		volumeAttribs map[string]string,
-		nodePublishSecrets map[string]string,
+		volumeContext map[string]string,
+		secrets map[string]string,
 		fsType string,
 		mountOptions []string,
 	) error
@@ -62,8 +62,8 @@ type csiClient interface {
 		stagingTargetPath string,
 		fsType string,
 		accessMode api.PersistentVolumeAccessMode,
-		nodeStageSecrets map[string]string,
-		volumeAttribs map[string]string,
+		secrets map[string]string,
+		volumeContext map[string]string,
 	) error
 	NodeUnstageVolume(ctx context.Context, volID, stagingTargetPath string) error
 	NodeGetCapabilities(ctx context.Context) ([]*csipb.NodeServiceCapability, error)
@@ -136,8 +136,8 @@ func (c *csiDriverClient) NodePublishVolume(
 	targetPath string,
 	accessMode api.PersistentVolumeAccessMode,
 	volumeInfo map[string]string,
-	volumeAttribs map[string]string,
-	nodePublishSecrets map[string]string,
+	volumeContext map[string]string,
+	secrets map[string]string,
 	fsType string,
 	mountOptions []string,
 ) error {
@@ -156,12 +156,12 @@ func (c *csiDriverClient) NodePublishVolume(
 	defer closer.Close()
 
 	req := &csipb.NodePublishVolumeRequest{
-		VolumeId:           volID,
-		TargetPath:         targetPath,
-		Readonly:           readOnly,
-		PublishInfo:        volumeInfo,
-		VolumeAttributes:   volumeAttribs,
-		NodePublishSecrets: nodePublishSecrets,
+		VolumeId:       volID,
+		TargetPath:     targetPath,
+		Readonly:       readOnly,
+		PublishContext: volumeInfo,
+		VolumeContext:  volumeContext,
+		Secrets:        secrets,
 		VolumeCapability: &csipb.VolumeCapability{
 			AccessMode: &csipb.VolumeCapability_AccessMode{
 				Mode: asCSIAccessMode(accessMode),
@@ -215,12 +215,12 @@ func (c *csiDriverClient) NodeUnpublishVolume(ctx context.Context, volID string,
 
 func (c *csiDriverClient) NodeStageVolume(ctx context.Context,
 	volID string,
-	publishInfo map[string]string,
+	publishContext map[string]string,
 	stagingTargetPath string,
 	fsType string,
 	accessMode api.PersistentVolumeAccessMode,
-	nodeStageSecrets map[string]string,
-	volumeAttribs map[string]string,
+	secrets map[string]string,
+	volumeContext map[string]string,
 ) error {
 	klog.V(4).Info(log("calling NodeStageVolume rpc [volid=%s,staging_target_path=%s]", volID, stagingTargetPath))
 	if volID == "" {
@@ -238,15 +238,15 @@ func (c *csiDriverClient) NodeStageVolume(ctx context.Context,
 
 	req := &csipb.NodeStageVolumeRequest{
 		VolumeId:          volID,
-		PublishInfo:       publishInfo,
+		PublishContext:    publishContext,
 		StagingTargetPath: stagingTargetPath,
 		VolumeCapability: &csipb.VolumeCapability{
 			AccessMode: &csipb.VolumeCapability_AccessMode{
 				Mode: asCSIAccessMode(accessMode),
 			},
 		},
-		NodeStageSecrets: nodeStageSecrets,
-		VolumeAttributes: volumeAttribs,
+		Secrets:       secrets,
+		VolumeContext: volumeContext,
 	}
 
 	if fsType == fsTypeBlockName {

pkg/volume/csi/csi_client_test.go

@@ -23,7 +23,7 @@ import (
 	"reflect"
 	"testing"
 
-	csipb "github.com/container-storage-interface/spec/lib/go/csi/v0"
+	csipb "github.com/container-storage-interface/spec/lib/go/csi"
 	api "k8s.io/api/core/v1"
 	"k8s.io/kubernetes/pkg/volume/csi/fake"
 )
@@ -57,19 +57,19 @@ func (c *fakeCsiDriverClient) NodePublishVolume(
 	targetPath string,
 	accessMode api.PersistentVolumeAccessMode,
 	volumeInfo map[string]string,
-	volumeAttribs map[string]string,
-	nodePublishSecrets map[string]string,
+	volumeContext map[string]string,
+	secrets map[string]string,
 	fsType string,
 	mountOptions []string,
 ) error {
 	c.t.Log("calling fake.NodePublishVolume...")
 	req := &csipb.NodePublishVolumeRequest{
-		VolumeId:           volID,
-		TargetPath:         targetPath,
-		Readonly:           readOnly,
-		PublishInfo:        volumeInfo,
-		VolumeAttributes:   volumeAttribs,
-		NodePublishSecrets: nodePublishSecrets,
+		VolumeId:       volID,
+		TargetPath:     targetPath,
+		Readonly:       readOnly,
+		PublishContext: volumeInfo,
+		VolumeContext:  volumeContext,
+		Secrets:        secrets,
 		VolumeCapability: &csipb.VolumeCapability{
 			AccessMode: &csipb.VolumeCapability_AccessMode{
 				Mode: asCSIAccessMode(accessMode),
@@ -100,17 +100,17 @@ func (c *fakeCsiDriverClient) NodeUnpublishVolume(ctx context.Context, volID str
 
 func (c *fakeCsiDriverClient) NodeStageVolume(ctx context.Context,
 	volID string,
-	publishInfo map[string]string,
+	publishContext map[string]string,
 	stagingTargetPath string,
 	fsType string,
 	accessMode api.PersistentVolumeAccessMode,
-	nodeStageSecrets map[string]string,
-	volumeAttribs map[string]string,
+	secrets map[string]string,
+	volumeContext map[string]string,
 ) error {
 	c.t.Log("calling fake.NodeStageVolume...")
 	req := &csipb.NodeStageVolumeRequest{
 		VolumeId:          volID,
-		PublishInfo:       publishInfo,
+		PublishContext:    publishContext,
 		StagingTargetPath: stagingTargetPath,
 		VolumeCapability: &csipb.VolumeCapability{
 			AccessMode: &csipb.VolumeCapability_AccessMode{
@@ -122,8 +122,8 @@ func (c *fakeCsiDriverClient) NodeStageVolume(ctx context.Context,
 				},
 			},
 		},
-		NodeStageSecrets: nodeStageSecrets,
-		VolumeAttributes: volumeAttribs,
+		Secrets:       secrets,
+		VolumeContext: volumeContext,
 	}
 
 	_, err := c.nodeClient.NodeStageVolume(ctx, req)
@@ -321,7 +321,7 @@ func TestClientNodeStageVolume(t *testing.T) {
 		volID             string
 		stagingTargetPath string
 		fsType            string
-		secret            map[string]string
+		secrets           map[string]string
 		mustFail          bool
 		err               error
 	}{
@@ -351,7 +351,7 @@ func TestClientNodeStageVolume(t *testing.T) {
 			tc.stagingTargetPath,
 			tc.fsType,
 			api.ReadWriteOnce,
-			tc.secret,
+			tc.secrets,
 			map[string]string{"attr0": "val0"},
 		)
 		checkErr(t, tc.mustFail, err)

pkg/volume/csi/csi_mounter_test.go

@@ -98,47 +98,46 @@ func TestMounterGetPath(t *testing.T) {
 func MounterSetUpTests(t *testing.T, podInfoEnabled bool) {
 	defer utilfeaturetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.CSIDriverRegistry, podInfoEnabled)()
 	tests := []struct {
-		name       string
-		driver     string
-		attributes map[string]string
-
-		expectedAttributes map[string]string
+		name                  string
+		driver                string
+		volumeContext         map[string]string
+		expectedVolumeContext map[string]string
 	}{
 		{
-			name:               "no pod info",
-			driver:             "no-info",
-			attributes:         nil,
-			expectedAttributes: nil,
+			name:                  "no pod info",
+			driver:                "no-info",
+			volumeContext:         nil,
+			expectedVolumeContext: nil,
 		},
 		{
-			name:               "no CSIDriver -> no pod info",
-			driver:             "unknown-driver",
-			attributes:         nil,
-			expectedAttributes: nil,
+			name:                  "no CSIDriver -> no pod info",
+			driver:                "unknown-driver",
+			volumeContext:         nil,
+			expectedVolumeContext: nil,
 		},
 		{
-			name:               "CSIDriver with PodInfoRequiredOnMount=nil -> no pod info",
-			driver:             "nil",
-			attributes:         nil,
-			expectedAttributes: nil,
+			name:                  "CSIDriver with PodInfoRequiredOnMount=nil -> no pod info",
+			driver:                "nil",
+			volumeContext:         nil,
+			expectedVolumeContext: nil,
 		},
 		{
-			name:               "no pod info -> keep existing attributes",
-			driver:             "no-info",
-			attributes:         map[string]string{"foo": "bar"},
-			expectedAttributes: map[string]string{"foo": "bar"},
+			name:                  "no pod info -> keep existing volumeContext",
+			driver:                "no-info",
+			volumeContext:         map[string]string{"foo": "bar"},
+			expectedVolumeContext: map[string]string{"foo": "bar"},
 		},
 		{
-			name:               "add pod info",
-			driver:             "info",
-			attributes:         nil,
-			expectedAttributes: map[string]string{"csi.storage.k8s.io/pod.uid": "test-pod", "csi.storage.k8s.io/serviceAccount.name": "test-service-account", "csi.storage.k8s.io/pod.name": "test-pod", "csi.storage.k8s.io/pod.namespace": "test-ns"},
+			name:                  "add pod info",
+			driver:                "info",
+			volumeContext:         nil,
+			expectedVolumeContext: map[string]string{"csi.storage.k8s.io/pod.uid": "test-pod", "csi.storage.k8s.io/serviceAccount.name": "test-service-account", "csi.storage.k8s.io/pod.name": "test-pod", "csi.storage.k8s.io/pod.namespace": "test-ns"},
 		},
 		{
-			name:               "add pod info -> keep existing attributes",
-			driver:             "info",
-			attributes:         map[string]string{"foo": "bar"},
-			expectedAttributes: map[string]string{"foo": "bar", "csi.storage.k8s.io/pod.uid": "test-pod", "csi.storage.k8s.io/serviceAccount.name": "test-service-account", "csi.storage.k8s.io/pod.name": "test-pod", "csi.storage.k8s.io/pod.namespace": "test-ns"},
+			name:                  "add pod info -> keep existing volumeContext",
+			driver:                "info",
+			volumeContext:         map[string]string{"foo": "bar"},
+			expectedVolumeContext: map[string]string{"foo": "bar", "csi.storage.k8s.io/pod.uid": "test-pod", "csi.storage.k8s.io/serviceAccount.name": "test-service-account", "csi.storage.k8s.io/pod.name": "test-pod", "csi.storage.k8s.io/pod.namespace": "test-ns"},
 		},
 	}
 
@@ -163,7 +162,7 @@ func MounterSetUpTests(t *testing.T, podInfoEnabled bool) {
 			}
 
 			pv := makeTestPV("test-pv", 10, test.driver, testVol)
-			pv.Spec.CSI.VolumeAttributes = test.attributes
+			pv.Spec.CSI.VolumeAttributes = test.volumeContext
 			pv.Spec.MountOptions = []string{"foo=bar", "baz=qux"}
 			pvName := pv.GetName()
 
@@ -245,13 +244,13 @@ func MounterSetUpTests(t *testing.T, podInfoEnabled bool) {
 				t.Errorf("csi server expected mount options %v, got %v", pv.Spec.MountOptions, vol.MountFlags)
 			}
 			if podInfoEnabled {
-				if !reflect.DeepEqual(vol.Attributes, test.expectedAttributes) {
-					t.Errorf("csi server expected attributes %+v, got %+v", test.expectedAttributes, vol.Attributes)
+				if !reflect.DeepEqual(vol.VolumeContext, test.expectedVolumeContext) {
+					t.Errorf("csi server expected volumeContext %+v, got %+v", test.expectedVolumeContext, vol.VolumeContext)
 				}
 			} else {
-				// CSIPodInfo feature is disabled, we expect no modifications to attributes.
-				if !reflect.DeepEqual(vol.Attributes, test.attributes) {
-					t.Errorf("csi server expected attributes %+v, got %+v", test.attributes, vol.Attributes)
+				// CSIPodInfo feature is disabled, we expect no modifications to volumeContext.
+				if !reflect.DeepEqual(vol.VolumeContext, test.volumeContext) {
+					t.Errorf("csi server expected volumeContext %+v, got %+v", test.volumeContext, vol.VolumeContext)
 				}
 			}
 		})

pkg/volume/csi/fake/BUILD

@@ -9,7 +9,7 @@ go_library(
     importpath = "k8s.io/kubernetes/pkg/volume/csi/fake",
     visibility = ["//visibility:public"],
     deps = [
-        "//vendor/github.com/container-storage-interface/spec/lib/go/csi/v0:go_default_library",
+        "//vendor/github.com/container-storage-interface/spec/lib/go/csi:go_default_library",
         "//vendor/google.golang.org/grpc:go_default_library",
     ],
 )

pkg/volume/csi/fake/fake_client.go

@@ -23,7 +23,7 @@ import (
 
 	"google.golang.org/grpc"
 
-	csipb "github.com/container-storage-interface/spec/lib/go/csi/v0"
+	csipb "github.com/container-storage-interface/spec/lib/go/csi"
 )
 
 // IdentityClient is a CSI identity client used for testing
@@ -57,9 +57,9 @@ func (f *IdentityClient) Probe(ctx context.Context, in *csipb.ProbeRequest, opts
 }
 
 type CSIVolume struct {
-	Attributes map[string]string
-	Path       string
-	MountFlags []string
+	VolumeContext map[string]string
+	Path          string
+	MountFlags    []string
 }
 
 // NodeClient returns CSI node client
@@ -99,10 +99,10 @@ func (f *NodeClient) GetNodeStagedVolumes() map[string]CSIVolume {
 	return f.nodeStagedVolumes
 }
 
-func (f *NodeClient) AddNodeStagedVolume(volID, deviceMountPath string, attributes map[string]string) {
+func (f *NodeClient) AddNodeStagedVolume(volID, deviceMountPath string, volumeContext map[string]string) {
 	f.nodeStagedVolumes[volID] = CSIVolume{
-		Path:       deviceMountPath,
-		Attributes: attributes,
+		Path:          deviceMountPath,
+		VolumeContext: volumeContext,
 	}
 }
 
@@ -125,9 +125,9 @@ func (f *NodeClient) NodePublishVolume(ctx context.Context, req *csipb.NodePubli
 		return nil, errors.New("invalid fstype")
 	}
 	f.nodePublishedVolumes[req.GetVolumeId()] = CSIVolume{
-		Path:       req.GetTargetPath(),
-		Attributes: req.GetVolumeAttributes(),
-		MountFlags: req.GetVolumeCapability().GetMount().MountFlags,
+		Path:          req.GetTargetPath(),
+		VolumeContext: req.GetVolumeContext(),
+		MountFlags:    req.GetVolumeCapability().GetMount().MountFlags,
 	}
 	return &csipb.NodePublishVolumeResponse{}, nil
 }
@@ -172,8 +172,8 @@ func (f *NodeClient) NodeStageVolume(ctx context.Context, req *csipb.NodeStageVo
 	}
 
 	f.nodeStagedVolumes[req.GetVolumeId()] = CSIVolume{
-		Path:       req.GetStagingTargetPath(),
-		Attributes: req.GetVolumeAttributes(),
+		Path:          req.GetStagingTargetPath(),
+		VolumeContext: req.GetVolumeContext(),
 	}
 	return &csipb.NodeStageVolumeResponse{}, nil
 }
@@ -195,11 +195,6 @@ func (f *NodeClient) NodeUnstageVolume(ctx context.Context, req *csipb.NodeUnsta
 	return &csipb.NodeUnstageVolumeResponse{}, nil
 }
 
-// NodeGetId implements method
-func (f *NodeClient) NodeGetId(ctx context.Context, in *csipb.NodeGetIdRequest, opts ...grpc.CallOption) (*csipb.NodeGetIdResponse, error) {
-	return nil, nil
-}
-
 // NodeGetId implements csi method
 func (f *NodeClient) NodeGetInfo(ctx context.Context, in *csipb.NodeGetInfoRequest, opts ...grpc.CallOption) (*csipb.NodeGetInfoResponse, error) {
 	if f.nextErr != nil {
@@ -227,6 +222,11 @@ func (f *NodeClient) NodeGetCapabilities(ctx context.Context, in *csipb.NodeGetC
 	return nil, nil
 }
 
+// NodeGetVolumeStats implements csi method
+func (f *NodeClient) NodeGetVolumeStats(ctx context.Context, in *csipb.NodeGetVolumeStatsRequest, opts ...grpc.CallOption) (*csipb.NodeGetVolumeStatsResponse, error) {
+	return nil, nil
+}
+
 // ControllerClient represents a CSI Controller client
 type ControllerClient struct {
 	nextCapabilities []*csipb.ControllerServiceCapability

pkg/volume/csi/nodeinfomanager/BUILD

@@ -19,7 +19,7 @@ go_library(
         "//staging/src/k8s.io/apiserver/pkg/util/feature:go_default_library",
         "//staging/src/k8s.io/client-go/util/retry:go_default_library",
         "//staging/src/k8s.io/csi-api/pkg/apis/csi/v1alpha1:go_default_library",
-        "//vendor/github.com/container-storage-interface/spec/lib/go/csi/v0:go_default_library",
+        "//vendor/github.com/container-storage-interface/spec/lib/go/csi:go_default_library",
         "//vendor/k8s.io/klog:go_default_library",
     ],
 )
@@ -61,7 +61,7 @@ go_test(
         "//staging/src/k8s.io/client-go/util/testing:go_default_library",
         "//staging/src/k8s.io/csi-api/pkg/apis/csi/v1alpha1:go_default_library",
         "//staging/src/k8s.io/csi-api/pkg/client/clientset/versioned/fake:go_default_library",
-        "//vendor/github.com/container-storage-interface/spec/lib/go/csi/v0:go_default_library",
+        "//vendor/github.com/container-storage-interface/spec/lib/go/csi:go_default_library",
         "//vendor/github.com/stretchr/testify/assert:go_default_library",
     ],
 )

pkg/volume/csi/nodeinfomanager/nodeinfomanager.go

@@ -23,7 +23,7 @@ import (
 	"fmt"
 	"strings"
 
-	csipb "github.com/container-storage-interface/spec/lib/go/csi/v0"
+	csipb "github.com/container-storage-interface/spec/lib/go/csi"
 	"k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/api/errors"
 	"k8s.io/apimachinery/pkg/api/resource"

pkg/volume/csi/nodeinfomanager/nodeinfomanager_test.go

@@ -21,7 +21,7 @@ import (
 	"fmt"
 	"testing"
 
-	"github.com/container-storage-interface/spec/lib/go/csi/v0"
+	"github.com/container-storage-interface/spec/lib/go/csi"
 	"github.com/stretchr/testify/assert"
 	"k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/api/resource"

staging/src/k8s.io/apiextensions-apiserver/Godeps/Godeps.json

@@ -820,79 +820,111 @@
 		},
 		{
 			"ImportPath": "google.golang.org/grpc",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/balancer",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/balancer/base",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/balancer/roundrobin",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/codes",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/connectivity",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/credentials",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
-			"ImportPath": "google.golang.org/grpc/grpclb/grpc_lb_v1/messages",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"ImportPath": "google.golang.org/grpc/encoding",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/encoding/proto",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/grpclog",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/health",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/health/grpc_health_v1",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/internal",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/internal/backoff",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/internal/channelz",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/internal/grpcrand",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/keepalive",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/metadata",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/naming",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/peer",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/resolver",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/resolver/dns",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/resolver/passthrough",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/stats",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/status",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/tap",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/transport",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "gopkg.in/inf.v0",

staging/src/k8s.io/apiserver/Godeps/Godeps.json

@@ -812,79 +812,111 @@
 		},
 		{
 			"ImportPath": "google.golang.org/grpc",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/balancer",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/balancer/base",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/balancer/roundrobin",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/codes",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/connectivity",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/credentials",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
-			"ImportPath": "google.golang.org/grpc/grpclb/grpc_lb_v1/messages",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"ImportPath": "google.golang.org/grpc/encoding",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/encoding/proto",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/grpclog",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/health",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/health/grpc_health_v1",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/internal",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/internal/backoff",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/internal/channelz",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/internal/grpcrand",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/keepalive",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/metadata",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/naming",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/peer",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/resolver",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/resolver/dns",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/resolver/passthrough",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/stats",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/status",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/tap",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/transport",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "gopkg.in/inf.v0",

staging/src/k8s.io/kube-aggregator/Godeps/Godeps.json

@@ -416,75 +416,107 @@
 		},
 		{
 			"ImportPath": "google.golang.org/grpc",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/balancer",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/balancer/base",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/balancer/roundrobin",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/codes",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/connectivity",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/credentials",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
-			"ImportPath": "google.golang.org/grpc/grpclb/grpc_lb_v1/messages",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"ImportPath": "google.golang.org/grpc/encoding",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/encoding/proto",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/grpclog",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/health/grpc_health_v1",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/internal",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/internal/backoff",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/internal/channelz",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/internal/grpcrand",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/keepalive",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/metadata",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/naming",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/peer",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/resolver",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/resolver/dns",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/resolver/passthrough",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/stats",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/status",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/tap",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/transport",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "gopkg.in/inf.v0",

staging/src/k8s.io/sample-apiserver/Godeps/Godeps.json

@@ -388,75 +388,107 @@
 		},
 		{
 			"ImportPath": "google.golang.org/grpc",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/balancer",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/balancer/base",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/balancer/roundrobin",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/codes",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/connectivity",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/credentials",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
-			"ImportPath": "google.golang.org/grpc/grpclb/grpc_lb_v1/messages",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"ImportPath": "google.golang.org/grpc/encoding",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/encoding/proto",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/grpclog",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/health/grpc_health_v1",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/internal",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/internal/backoff",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/internal/channelz",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/internal/grpcrand",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/keepalive",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/metadata",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/naming",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/peer",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/resolver",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/resolver/dns",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
+		},
+		{
+			"ImportPath": "google.golang.org/grpc/resolver/passthrough",
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/stats",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/status",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/tap",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "google.golang.org/grpc/transport",
-			"Rev": "5b3c4e850e90a4cf6a20ebd46c8b32a0a3afcb9e"
+			"Rev": "168a6198bcb0ef175f7dacec0b8691fc141dc9b8"
 		},
 		{
 			"ImportPath": "gopkg.in/inf.v0",

test/e2e/storage/drivers/csi.go

@@ -147,7 +147,7 @@ var _ DynamicPVTestDriver = &gcePDCSIDriver{}
 func InitGcePDCSIDriver() TestDriver {
 	return &gcePDCSIDriver{
 		driverInfo: DriverInfo{
-			Name:        "com.google.csi.gcepd",
+			Name:        "pd.csi.storage.gke.io",
 			FeatureTag:  "[Serial]",
 			MaxFileSize: testpatterns.FileSizeMedium,
 			SupportedFsType: sets.NewString(
@@ -237,7 +237,7 @@ var _ DynamicPVTestDriver = &gcePDExternalCSIDriver{}
 func InitGcePDExternalCSIDriver() TestDriver {
 	return &gcePDExternalCSIDriver{
 		driverInfo: DriverInfo{
-			Name: "com.google.csi.gcepd",
+			Name: "pd.csi.storage.gke.io",
 			// TODO(#70258): this is temporary until we can figure out how to make e2e tests a library
 			FeatureTag:  "[Feature: gcePD-external]",
 			MaxFileSize: testpatterns.FileSizeMedium,

test/e2e/storage/testsuites/volumemode.go

@@ -342,7 +342,7 @@ func testVolumeModeSuccessForDynamicPV(input *volumeModeTestInput) {
 		var err error
 
 		// TODO: This skip should be removed once #70760 is fixed
-		skipTestUntilBugfix("70760", input.driverName, []string{"com.google.csi.gcepd"})
+		skipTestUntilBugfix("70760", input.driverName, []string{"pd.csi.storage.gke.io"})
 
 		By("Creating sc")
 		input.sc, err = cs.StorageV1().StorageClasses().Create(input.sc)

test/e2e/testing-manifests/storage-csi/driver-registrar/rbac.yaml

@@ -11,7 +11,7 @@
 apiVersion: v1
 kind: ServiceAccount
 metadata:
-  name: csi-driver-registrar
+  name: csi-node-sa
   # replace with non-default namespace name
   namespace: default
 
@@ -42,7 +42,7 @@ metadata:
   name: csi-driver-registrar-role
 subjects:
   - kind: ServiceAccount
-    name: csi-driver-registrar
+    name: csi-node-sa
     # replace with non-default namespace name
     namespace: default
 roleRef:

test/e2e/testing-manifests/storage-csi/gce-pd/controller_ss.yaml

 kind: StatefulSet
 apiVersion: apps/v1
 metadata:
-  name: csi-gce-controller
+  name: csi-gce-pd-controller
 spec:
   serviceName: "csi-gce-pd"
   replicas: 1
   selector:
     matchLabels:
-      app: csi-gce-pd-driver
+      app: gcp-compute-persistent-disk-csi-driver
   template:
     metadata:
       labels:
-        app: csi-gce-pd-driver
+        app: gcp-compute-persistent-disk-csi-driver
     spec:
-      serviceAccountName: csi-controller
+      serviceAccountName: csi-controller-sa
       containers:
-        - name: csi-external-provisioner
-          imagePullPolicy: Always
-          image: gcr.io/gke-release/csi-provisioner:v0.4.1-gke.0
+        - name: csi-provisioner
+          image: gcr.io/gke-release/csi-provisioner:v1.0.0-gke.0
           args:
             - "--v=5"
-            - "--provisioner=com.google.csi.gcepd"
+            - "--provisioner=pd.csi.storage.gke.io"
             - "--csi-address=/csi/csi.sock"
           volumeMounts:
             - name: socket-dir
               mountPath: /csi
         - name: csi-attacher
-          imagePullPolicy: Always
-          image: gcr.io/gke-release/csi-attacher:v0.4.1-gke.0
+          image: gcr.io/gke-release/csi-attacher:v1.0.0-gke.0
           args:
             - "--v=5"
             - "--csi-address=/csi/csi.sock"
           volumeMounts:
             - name: socket-dir
               mountPath: /csi
-        - name: gce-driver
-          imagePullPolicy: Always
-          image: gcr.io/gke-release/gcp-compute-persistent-disk-csi-driver:v0.2.0-gke.0
+        - name: gce-pd-driver
+          image: gcr.io/gke-release/gcp-compute-persistent-disk-csi-driver:v0.3.0-gke.0
           args:
             - "--v=5"
-            - "--endpoint=unix:///csi/csi.sock"
+            - "--endpoint=unix:/csi/csi.sock"
           env:
             - name: GOOGLE_APPLICATION_CREDENTIALS
-              value: "/etc/service-account/cloud-sa.json"
+              value: "/etc/cloud-sa/cloud-sa.json"
           volumeMounts:
             - name: socket-dir
               mountPath: /csi
             - name: cloud-sa-volume
               readOnly: true
-              mountPath: "/etc/service-account"
+              mountPath: "/etc/cloud-sa"
       volumes:
         - name: socket-dir
           emptyDir: {}

test/e2e/testing-manifests/storage-csi/gce-pd/csi-controller-rbac.yaml

 apiVersion: v1
 kind: ServiceAccount
 metadata:
-  name: csi-controller
+  name: csi-controller-sa
 
 ---
 kind: ClusterRoleBinding
@@ -10,7 +10,7 @@ metadata:
   name: csi-controller-attacher-role
 subjects:
   - kind: ServiceAccount
-    name: csi-controller
+    name: csi-controller-sa
     namespace: default
 roleRef:
   kind: ClusterRole
@@ -25,7 +25,7 @@ metadata:
   namespace: default
 subjects:
   - kind: ServiceAccount
-    name: csi-controller
+    name: csi-controller-sa
     namespace: default
 roleRef:
   kind: Role
@@ -38,7 +38,7 @@ metadata:
   name: csi-controller-provisioner-role
 subjects:
   - kind: ServiceAccount
-    name: csi-controller
+    name: csi-controller-sa
     namespace: default
 roleRef:
   kind: ClusterRole
@@ -53,7 +53,7 @@ metadata:
   namespace: default
 subjects:
   - kind: ServiceAccount
-    name: csi-controller
+    name: csi-controller-sa
     namespace: default
 roleRef:
   kind: Role
@@ -67,10 +67,10 @@ metadata:
   name: psp-csi-controller-driver-registrar-role
 subjects:
   - kind: ServiceAccount
-    name: csi-controller
+    name: csi-controller-sa
     namespace: default
   - kind: ServiceAccount
-    name: csi-driver-registrar
+    name: csi-node-sa
     namespace: default
 roleRef:
   kind: ClusterRole

test/e2e/testing-manifests/storage-csi/gce-pd/node_ds.yaml

 kind: DaemonSet
 apiVersion: apps/v1
 metadata:
-  name: csi-gce-node
+  name: csi-gce-pd-node
 spec:
   selector:
     matchLabels:
-      app: csi-gce-driver
-  serviceName: csi-gce
+      app: gcp-compute-persistent-disk-csi-driver
   template:
     metadata:
       labels:
-        app: csi-gce-driver
+        app: gcp-compute-persistent-disk-csi-driver
     spec:
-      serviceAccountName: csi-driver-registrar
+      serviceAccountName: csi-node-sa
       containers:
         - name: csi-driver-registrar
-          imagePullPolicy: Always
-          image: gcr.io/gke-release/csi-driver-registrar:v0.4.1-gke.0
+          image: gcr.io/gke-release/csi-driver-registrar:v1.0.0-gke.0
           args:
             - "--v=5"
-            - "--csi-address=/csi/csi.sock"
-            - "--kubelet-registration-path=/var/lib/kubelet/plugins/com.google.csi.gcepd/csi.sock"
+            - "--csi-address=/var/lib/kubelet/plugins/pd.csi.storage.gke.io/csi.sock"
+            - "--kubelet-registration-path=/var/lib/kubelet/plugins/pd.csi.storage.gke.io/csi.sock"
+          lifecycle:
+            preStop:
+              exec:
+                command: ["/bin/sh", "-c", "rm -rf /registration/pd.csi.storage.gke.io /registration/pd.csi.storage.gke.io-reg.sock"]
           env:
             - name: KUBE_NODE_NAME
               valueFrom:
@@ -28,17 +30,16 @@ spec:
                   fieldPath: spec.nodeName
           volumeMounts:
             - name: plugin-dir
-              mountPath: /csi
+              mountPath: /var/lib/kubelet/plugins/pd.csi.storage.gke.io/
             - name: registration-dir
               mountPath: /registration
-        - name: gce-driver
+        - name: gce-pd-driver
           securityContext:
             privileged: true
-          imagePullPolicy: Always
-          image: gcr.io/gke-release/gcp-compute-persistent-disk-csi-driver:v0.2.0-gke.0
+          image: gcr.io/gke-release/gcp-compute-persistent-disk-csi-driver:v0.3.0-gke.0
           args:
             - "--v=5"
-            - "--endpoint=unix:///csi/csi.sock"
+            - "--endpoint=unix:/csi/csi.sock"
           volumeMounts:
             - name: kubelet-dir
               mountPath: /var/lib/kubelet
@@ -67,7 +68,7 @@ spec:
             type: Directory
         - name: plugin-dir
           hostPath:
-            path: /var/lib/kubelet/plugins/com.google.csi.gcepd/
+            path: /var/lib/kubelet/plugins/pd.csi.storage.gke.io/
             type: DirectoryOrCreate
         - name: device-dir
           hostPath:
@@ -90,4 +91,3 @@ spec:
           hostPath:
             path: /sys
             type: Directory
-

test/e2e/testing-manifests/storage-csi/hostpath/hostpath/csi-hostpath-attacher.yaml

@@ -30,7 +30,7 @@ spec:
       serviceAccountName: csi-attacher
       containers:
         - name: csi-attacher
-          image: quay.io/k8scsi/csi-attacher:v0.4.1
+          image: gcr.io/gke-release/csi-attacher:v1.0.0-gke.0
           args:
             - --v=5
             - --csi-address=$(ADDRESS)

test/e2e/testing-manifests/storage-csi/hostpath/hostpath/csi-hostpath-provisioner.yaml

@@ -30,7 +30,7 @@ spec:
       serviceAccountName: csi-provisioner
       containers:
         - name: csi-provisioner
-          image: quay.io/k8scsi/csi-provisioner:v0.4.1
+          image: gcr.io/gke-release/csi-provisioner:v1.0.0-gke.0
           args:
             - "--provisioner=csi-hostpath"
             - "--csi-address=$(ADDRESS)"

test/e2e/testing-manifests/storage-csi/hostpath/hostpath/csi-hostpathplugin.yaml

@@ -11,11 +11,11 @@ spec:
       labels:
         app: csi-hostpathplugin
     spec:
-      serviceAccountName: csi-driver-registrar
+      serviceAccountName: csi-node-sa
       hostNetwork: true
       containers:
         - name: driver-registrar
-          image: quay.io/k8scsi/driver-registrar:v0.4.1
+          image: gcr.io/gke-release/csi-driver-registrar:v1.0.0-gke.0
           args:
             - --v=5
             - --csi-address=/csi/csi.sock
@@ -33,7 +33,7 @@ spec:
           - mountPath: /registration
             name: registration-dir
         - name: hostpath
-          image: quay.io/k8scsi/hostpathplugin:v0.4.1
+          image: quay.io/k8scsi/hostpathplugin:v1.0.0
           args:
             - "--v=5"
             - "--endpoint=$(CSI_ENDPOINT)"

test/e2e/testing-manifests/storage-csi/hostpath/hostpath/e2e-test-rbac.yaml

@@ -8,7 +8,7 @@ subjects:
     name: csi-attacher
     namespace: default
   - kind: ServiceAccount
-    name: csi-driver-registrar
+    name: csi-node-sa
     namespace: default
   - kind: ServiceAccount
     name: csi-provisioner

test/integration/master/synthetic_master_test.go

@@ -304,7 +304,7 @@ func TestObjectSizeResponses(t *testing.T) {
 	const DeploymentTwoMegabyteSize = 1000000
 
 	expectedMsgFor1MB := `etcdserver: request is too large`
-	expectedMsgFor2MB := `rpc error: code = ResourceExhausted desc = grpc: trying to send message larger than max`
+	expectedMsgFor2MB := `rpc error: code = ResourceExhausted desc = trying to send message larger than max`
 	expectedMsgForLargeAnnotation := `metadata.annotations: Too long: must have at most 262144 characters`
 
 	deployment1 := constructBody("a", DeploymentMegabyteSize, "labels", t)    // >1 MB file

vendor/BUILD

@@ -94,7 +94,7 @@ filegroup(
         "//vendor/github.com/cloudflare/cfssl/ubiquity:all-srcs",
         "//vendor/github.com/clusterhq/flocker-go:all-srcs",
         "//vendor/github.com/codedellemc/goscaleio:all-srcs",
-        "//vendor/github.com/container-storage-interface/spec/lib/go/csi/v0:all-srcs",
+        "//vendor/github.com/container-storage-interface/spec/lib/go/csi:all-srcs",
         "//vendor/github.com/containerd/console:all-srcs",
         "//vendor/github.com/containerd/containerd/api/services/containers/v1:all-srcs",
         "//vendor/github.com/containerd/containerd/api/services/tasks/v1:all-srcs",
@@ -239,6 +239,7 @@ filegroup(
         "//vendor/github.com/golang/mock/gomock:all-srcs",
         "//vendor/github.com/golang/protobuf/jsonpb:all-srcs",
         "//vendor/github.com/golang/protobuf/proto:all-srcs",
+        "//vendor/github.com/golang/protobuf/protoc-gen-go/descriptor:all-srcs",
         "//vendor/github.com/golang/protobuf/ptypes:all-srcs",
         "//vendor/github.com/google/btree:all-srcs",
         "//vendor/github.com/google/cadvisor/accelerators:all-srcs",

vendor/github.com/container-storage-interface/spec/lib/go/csi/v0/BUILD → vendor/github.com/container-storage-interface/spec/lib/go/csi/BUILD

@@ -3,11 +3,13 @@ load("@io_bazel_rules_go//go:def.bzl", "go_library")
 go_library(
     name = "go_default_library",
     srcs = ["csi.pb.go"],
-    importmap = "k8s.io/kubernetes/vendor/github.com/container-storage-interface/spec/lib/go/csi/v0",
-    importpath = "github.com/container-storage-interface/spec/lib/go/csi/v0",
+    importmap = "k8s.io/kubernetes/vendor/github.com/container-storage-interface/spec/lib/go/csi",
+    importpath = "github.com/container-storage-interface/spec/lib/go/csi",
     visibility = ["//visibility:public"],
     deps = [
         "//vendor/github.com/golang/protobuf/proto:go_default_library",
+        "//vendor/github.com/golang/protobuf/protoc-gen-go/descriptor:go_default_library",
+        "//vendor/github.com/golang/protobuf/ptypes/timestamp:go_default_library",
         "//vendor/github.com/golang/protobuf/ptypes/wrappers:go_default_library",
         "//vendor/golang.org/x/net/context:go_default_library",
         "//vendor/google.golang.org/grpc:go_default_library",

vendor/github.com/golang/protobuf/protoc-gen-go/descriptor/BUILD

+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = ["descriptor.pb.go"],
+    importmap = "k8s.io/kubernetes/vendor/github.com/golang/protobuf/protoc-gen-go/descriptor",
+    importpath = "github.com/golang/protobuf/protoc-gen-go/descriptor",
+    visibility = ["//visibility:public"],
+    deps = ["//vendor/github.com/golang/protobuf/proto:go_default_library"],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+)

vendor/google.golang.org/grpc/.travis.yml

 language: go
 
 go:
+  - 1.6.x
   - 1.7.x
   - 1.8.x
   - 1.9.x
+  - 1.10.x
 
 matrix:
   include:
-  - go: 1.9.x
-    env: ARCH=386
+  - go: 1.10.x
+    env: RUN386=1
 
 go_import_path: google.golang.org/grpc
 
 before_install:
-  - if [[ "$TRAVIS_GO_VERSION" = 1.9* && "$ARCH" != "386" ]]; then ./vet.sh -install || exit 1; fi
+  - if [[ -n "$RUN386" ]]; then export GOARCH=386; fi
+  - if [[ "$TRAVIS_GO_VERSION" = 1.10* && "$GOARCH" != "386" ]]; then ./vet.sh -install || exit 1; fi
 
 script:
-  - if [[ "$TRAVIS_GO_VERSION" = 1.9* && "$ARCH" != "386" ]]; then ./vet.sh || exit 1; fi
-  - make test testrace
+  - if [[ "$TRAVIS_GO_VERSION" = 1.10* && "$GOARCH" != "386" ]]; then ./vet.sh || exit 1; fi
+  - make test || exit 1
+  - if [[ "$GOARCH" != "386" ]]; then make testrace; fi

vendor/google.golang.org/grpc/BUILD

@@ -11,7 +11,9 @@ go_library(
         "clientconn.go",
         "codec.go",
         "doc.go",
-        "grpclb.go",
+        "envconfig.go",
+        "go16.go",
+        "go17.go",
         "interceptor.go",
         "picker_wrapper.go",
         "pickfirst.go",
@@ -19,29 +21,37 @@ go_library(
         "resolver_conn_wrapper.go",
         "rpc_util.go",
         "server.go",
+        "service_config.go",
+        "stickiness_linkedmap.go",
         "stream.go",
         "trace.go",
+        "version.go",
     ],
     importmap = "k8s.io/kubernetes/vendor/google.golang.org/grpc",
     importpath = "google.golang.org/grpc",
     visibility = ["//visibility:public"],
     deps = [
-        "//vendor/github.com/golang/protobuf/proto:go_default_library",
         "//vendor/golang.org/x/net/context:go_default_library",
         "//vendor/golang.org/x/net/http2:go_default_library",
         "//vendor/golang.org/x/net/trace:go_default_library",
         "//vendor/google.golang.org/grpc/balancer:go_default_library",
+        "//vendor/google.golang.org/grpc/balancer/roundrobin:go_default_library",
         "//vendor/google.golang.org/grpc/codes:go_default_library",
         "//vendor/google.golang.org/grpc/connectivity:go_default_library",
         "//vendor/google.golang.org/grpc/credentials:go_default_library",
-        "//vendor/google.golang.org/grpc/grpclb/grpc_lb_v1/messages:go_default_library",
+        "//vendor/google.golang.org/grpc/encoding:go_default_library",
+        "//vendor/google.golang.org/grpc/encoding/proto:go_default_library",
         "//vendor/google.golang.org/grpc/grpclog:go_default_library",
         "//vendor/google.golang.org/grpc/internal:go_default_library",
+        "//vendor/google.golang.org/grpc/internal/backoff:go_default_library",
+        "//vendor/google.golang.org/grpc/internal/channelz:go_default_library",
         "//vendor/google.golang.org/grpc/keepalive:go_default_library",
         "//vendor/google.golang.org/grpc/metadata:go_default_library",
         "//vendor/google.golang.org/grpc/naming:go_default_library",
         "//vendor/google.golang.org/grpc/peer:go_default_library",
         "//vendor/google.golang.org/grpc/resolver:go_default_library",
+        "//vendor/google.golang.org/grpc/resolver/dns:go_default_library",
+        "//vendor/google.golang.org/grpc/resolver/passthrough:go_default_library",
         "//vendor/google.golang.org/grpc/stats:go_default_library",
         "//vendor/google.golang.org/grpc/status:go_default_library",
         "//vendor/google.golang.org/grpc/tap:go_default_library",
@@ -64,6 +74,7 @@ filegroup(
         "//vendor/google.golang.org/grpc/codes:all-srcs",
         "//vendor/google.golang.org/grpc/connectivity:all-srcs",
         "//vendor/google.golang.org/grpc/credentials:all-srcs",
+        "//vendor/google.golang.org/grpc/encoding:all-srcs",
         "//vendor/google.golang.org/grpc/grpclb/grpc_lb_v1/messages:all-srcs",
         "//vendor/google.golang.org/grpc/grpclog:all-srcs",
         "//vendor/google.golang.org/grpc/health:all-srcs",

vendor/google.golang.org/grpc/CONTRIBUTING.md

@@ -7,7 +7,7 @@ If you are new to github, please start by reading [Pull Request howto](https://h
 ## Legal requirements
 
 In order to protect both you and ourselves, you will need to sign the
-[Contributor License Agreement](https://cla.developers.google.com/clas).
+[Contributor License Agreement](https://identity.linuxfoundation.org/projects/cncf).
 
 ## Guidelines for Pull Requests
 How to get your contributions merged smoothly and quickly.
@@ -27,6 +27,10 @@ How to get your contributions merged smoothly and quickly.
 - Keep your PR up to date with upstream/master (if there are merge conflicts, we can't really merge your change).
  
 - **All tests need to be passing** before your change can be merged. We recommend you **run tests locally** before creating your PR to catch breakages early on.
+  - `make all` to test everything, OR
+  - `make vet` to catch vet errors
+  - `make test` to run the tests
+  - `make testrace` to run tests in race mode
 
 - Exceptions to the rules can be made if there's a compelling reason for doing so.
  

vendor/google.golang.org/grpc/Makefile

-all: test testrace
+all: vet test testrace
 
 deps:
 	go get -d -v google.golang.org/grpc/...
@@ -22,11 +22,14 @@ proto:
 	fi
 	go generate google.golang.org/grpc/...
 
+vet:
+	./vet.sh
+
 test: testdeps
-	go test -cpu 1,4 google.golang.org/grpc/...
+	go test -cpu 1,4 -timeout 5m google.golang.org/grpc/...
 
 testrace: testdeps
-	go test -race -cpu 1,4 google.golang.org/grpc/...
+	go test -race -cpu 1,4 -timeout 7m google.golang.org/grpc/...
 
 clean:
 	go clean -i google.golang.org/grpc/...
@@ -39,7 +42,7 @@ clean:
 	updatetestdeps \
 	build \
 	proto \
+	vet \
 	test \
 	testrace \
-	clean \
-	coverage
+	clean

vendor/google.golang.org/grpc/README.md

 # gRPC-Go
 
-[![Build Status](https://travis-ci.org/grpc/grpc-go.svg)](https://travis-ci.org/grpc/grpc-go) [![GoDoc](https://godoc.org/google.golang.org/grpc?status.svg)](https://godoc.org/google.golang.org/grpc)
+[![Build Status](https://travis-ci.org/grpc/grpc-go.svg)](https://travis-ci.org/grpc/grpc-go) [![GoDoc](https://godoc.org/google.golang.org/grpc?status.svg)](https://godoc.org/google.golang.org/grpc) [![GoReportCard](https://goreportcard.com/badge/grpc/grpc-go)](https://goreportcard.com/report/github.com/grpc/grpc-go)
 
 The Go implementation of [gRPC](https://grpc.io/): A high performance, open source, general RPC framework that puts mobile and HTTP/2 first. For more information see the [gRPC Quick Start: Go](https://grpc.io/docs/quickstart/go.html) guide.
 
@@ -16,7 +16,7 @@ $ go get -u google.golang.org/grpc
 Prerequisites
 -------------
 
-This requires Go 1.7 or later.
+This requires Go 1.6 or later. Go 1.7 will be required soon.
 
 Constraints
 -----------

vendor/google.golang.org/grpc/backoff.go

@@ -16,83 +16,23 @@
  *
  */
 
+// See internal/backoff package for the backoff implementation. This file is
+// kept for the exported types and API backward compatility.
+
 package grpc
 
 import (
-	"math/rand"
 	"time"
 )
 
 // DefaultBackoffConfig uses values specified for backoff in
 // https://github.com/grpc/grpc/blob/master/doc/connection-backoff.md.
-var (
-	DefaultBackoffConfig = BackoffConfig{
-		MaxDelay:  120 * time.Second,
-		baseDelay: 1.0 * time.Second,
-		factor:    1.6,
-		jitter:    0.2,
-	}
-)
-
-// backoffStrategy defines the methodology for backing off after a grpc
-// connection failure.
-//
-// This is unexported until the gRPC project decides whether or not to allow
-// alternative backoff strategies. Once a decision is made, this type and its
-// method may be exported.
-type backoffStrategy interface {
-	// backoff returns the amount of time to wait before the next retry given
-	// the number of consecutive failures.
-	backoff(retries int) time.Duration
+var DefaultBackoffConfig = BackoffConfig{
+	MaxDelay: 120 * time.Second,
 }
 
 // BackoffConfig defines the parameters for the default gRPC backoff strategy.
 type BackoffConfig struct {
 	// MaxDelay is the upper bound of backoff delay.
 	MaxDelay time.Duration
-
-	// TODO(stevvooe): The following fields are not exported, as allowing
-	// changes would violate the current gRPC specification for backoff. If
-	// gRPC decides to allow more interesting backoff strategies, these fields
-	// may be opened up in the future.
-
-	// baseDelay is the amount of time to wait before retrying after the first
-	// failure.
-	baseDelay time.Duration
-
-	// factor is applied to the backoff after each retry.
-	factor float64
-
-	// jitter provides a range to randomize backoff delays.
-	jitter float64
-}
-
-func setDefaults(bc *BackoffConfig) {
-	md := bc.MaxDelay
-	*bc = DefaultBackoffConfig
-
-	if md > 0 {
-		bc.MaxDelay = md
-	}
-}
-
-func (bc BackoffConfig) backoff(retries int) time.Duration {
-	if retries == 0 {
-		return bc.baseDelay
-	}
-	backoff, max := float64(bc.baseDelay), float64(bc.MaxDelay)
-	for backoff < max && retries > 0 {
-		backoff *= bc.factor
-		retries--
-	}
-	if backoff > max {
-		backoff = max
-	}
-	// Randomize backoff delays so that if a cluster of requests start at
-	// the same time, they won't operate in lockstep.
-	backoff *= 1 + bc.jitter*(rand.Float64()*2-1)
-	if backoff < 0 {
-		return 0
-	}
-	return time.Duration(backoff)
 }

vendor/google.golang.org/grpc/balancer.go

@@ -28,10 +28,12 @@ import (
 	"google.golang.org/grpc/credentials"
 	"google.golang.org/grpc/grpclog"
 	"google.golang.org/grpc/naming"
+	"google.golang.org/grpc/status"
 )
 
 // Address represents a server the client connects to.
-// This is the EXPERIMENTAL API and may be changed or extended in the future.
+//
+// Deprecated: please use package balancer.
 type Address struct {
 	// Addr is the server address on which a connection will be established.
 	Addr string
@@ -41,6 +43,8 @@ type Address struct {
 }
 
 // BalancerConfig specifies the configurations for Balancer.
+//
+// Deprecated: please use package balancer.
 type BalancerConfig struct {
 	// DialCreds is the transport credential the Balancer implementation can
 	// use to dial to a remote load balancer server. The Balancer implementations
@@ -53,7 +57,8 @@ type BalancerConfig struct {
 }
 
 // BalancerGetOptions configures a Get call.
-// This is the EXPERIMENTAL API and may be changed or extended in the future.
+//
+// Deprecated: please use package balancer.
 type BalancerGetOptions struct {
 	// BlockingWait specifies whether Get should block when there is no
 	// connected address.
@@ -61,7 +66,8 @@ type BalancerGetOptions struct {
 }
 
 // Balancer chooses network addresses for RPCs.
-// This is the EXPERIMENTAL API and may be changed or extended in the future.
+//
+// Deprecated: please use package balancer.
 type Balancer interface {
 	// Start does the initialization work to bootstrap a Balancer. For example,
 	// this function may start the name resolution and watch the updates. It will
@@ -134,6 +140,8 @@ func downErrorf(timeout, temporary bool, format string, a ...interface{}) downEr
 
 // RoundRobin returns a Balancer that selects addresses round-robin. It uses r to watch
 // the name resolution updates and updates the addresses available correspondingly.
+//
+// Deprecated: please use package balancer/roundrobin.
 func RoundRobin(r naming.Resolver) Balancer {
 	return &roundRobin{r: r}
 }
@@ -310,7 +318,7 @@ func (rr *roundRobin) Get(ctx context.Context, opts BalancerGetOptions) (addr Ad
 	if !opts.BlockingWait {
 		if len(rr.addrs) == 0 {
 			rr.mu.Unlock()
-			err = Errorf(codes.Unavailable, "there is no address available")
+			err = status.Errorf(codes.Unavailable, "there is no address available")
 			return
 		}
 		// Returns the next addr on rr.addrs for failfast RPCs.

vendor/google.golang.org/grpc/balancer/BUILD

@@ -23,7 +23,11 @@ filegroup(
 
 filegroup(
     name = "all-srcs",
-    srcs = [":package-srcs"],
+    srcs = [
+        ":package-srcs",
+        "//vendor/google.golang.org/grpc/balancer/base:all-srcs",
+        "//vendor/google.golang.org/grpc/balancer/roundrobin:all-srcs",
+    ],
     tags = ["automanaged"],
     visibility = ["//visibility:public"],
 )

vendor/google.golang.org/grpc/balancer/balancer.go

@@ -23,6 +23,7 @@ package balancer
 import (
 	"errors"
 	"net"
+	"strings"
 
 	"golang.org/x/net/context"
 	"google.golang.org/grpc/connectivity"
@@ -33,24 +34,26 @@ import (
 var (
 	// m is a map from name to balancer builder.
 	m = make(map[string]Builder)
-	// defaultBuilder is the default balancer to use.
-	defaultBuilder Builder // TODO(bar) install pickfirst as default.
 )
 
-// Register registers the balancer builder to the balancer map.
-// b.Name will be used as the name registered with this builder.
+// Register registers the balancer builder to the balancer map. b.Name
+// (lowercased) will be used as the name registered with this builder.
+//
+// NOTE: this function must only be called during initialization time (i.e. in
+// an init() function), and is not thread-safe. If multiple Balancers are
+// registered with the same name, the one registered last will take effect.
 func Register(b Builder) {
-	m[b.Name()] = b
+	m[strings.ToLower(b.Name())] = b
 }
 
 // Get returns the resolver builder registered with the given name.
-// If no builder is register with the name, the default pickfirst will
-// be used.
+// Note that the compare is done in a case-insenstive fashion.
+// If no builder is register with the name, nil will be returned.
 func Get(name string) Builder {
-	if b, ok := m[name]; ok {
+	if b, ok := m[strings.ToLower(name)]; ok {
 		return b
 	}
-	return defaultBuilder
+	return nil
 }
 
 // SubConn represents a gRPC sub connection.
@@ -66,6 +69,11 @@ func Get(name string) Builder {
 // When the connection encounters an error, it will reconnect immediately.
 // When the connection becomes IDLE, it will not reconnect unless Connect is
 // called.
+//
+// This interface is to be implemented by gRPC. Users should not need a
+// brand new implementation of this interface. For the situations like
+// testing, the new implementation should embed this interface. This allows
+// gRPC to add new methods to this interface.
 type SubConn interface {
 	// UpdateAddresses updates the addresses used in this SubConn.
 	// gRPC checks if currently-connected address is still in the new list.
@@ -83,6 +91,11 @@ type SubConn interface {
 type NewSubConnOptions struct{}
 
 // ClientConn represents a gRPC ClientConn.
+//
+// This interface is to be implemented by gRPC. Users should not need a
+// brand new implementation of this interface. For the situations like
+// testing, the new implementation should embed this interface. This allows
+// gRPC to add new methods to this interface.
 type ClientConn interface {
 	// NewSubConn is called by balancer to create a new SubConn.
 	// It doesn't block and wait for the connections to be established.
@@ -99,6 +112,9 @@ type ClientConn interface {
 	// on the new picker to pick new SubConn.
 	UpdateBalancerState(s connectivity.State, p Picker)
 
+	// ResolveNow is called by balancer to notify gRPC to do a name resolving.
+	ResolveNow(resolver.ResolveNowOption)
+
 	// Target returns the dial target for this ClientConn.
 	Target() string
 }
@@ -113,6 +129,8 @@ type BuildOptions struct {
 	// to a remote load balancer server. The Balancer implementations
 	// can ignore this if it doesn't need to talk to remote balancer.
 	Dialer func(context.Context, string) (net.Conn, error)
+	// ChannelzParentID is the entity parent's channelz unique identification number.
+	ChannelzParentID int64
 }
 
 // Builder creates a balancer.
@@ -131,6 +149,10 @@ type PickOptions struct{}
 type DoneInfo struct {
 	// Err is the rpc error the RPC finished with. It could be nil.
 	Err error
+	// BytesSent indicates if any bytes have been sent to the server.
+	BytesSent bool
+	// BytesReceived indicates if any byte has been received from the server.
+	BytesReceived bool
 }
 
 var (
@@ -143,7 +165,7 @@ var (
 )
 
 // Picker is used by gRPC to pick a SubConn to send an RPC.
-// Balancer is expected to generate a new picker from its snapshot everytime its
+// Balancer is expected to generate a new picker from its snapshot every time its
 // internal state has changed.
 //
 // The pickers used by gRPC can be updated by ClientConn.UpdateBalancerState().
@@ -161,7 +183,7 @@ type Picker interface {
 	// If a SubConn is returned:
 	// - If it is READY, gRPC will send the RPC on it;
 	// - If it is not ready, or becomes not ready after it's returned, gRPC will block
-	//   this call until a new picker is updated and will call pick on the new picker.
+	//   until UpdateBalancerState() is called and will call pick on the new picker.
 	//
 	// If the returned error is not nil:
 	// - If the error is ErrNoSubConnAvailable, gRPC will block until UpdateBalancerState()
@@ -204,3 +226,45 @@ type Balancer interface {
 	// ClientConn.RemoveSubConn for its existing SubConns.
 	Close()
 }
+
+// ConnectivityStateEvaluator takes the connectivity states of multiple SubConns
+// and returns one aggregated connectivity state.
+//
+// It's not thread safe.
+type ConnectivityStateEvaluator struct {
+	numReady            uint64 // Number of addrConns in ready state.
+	numConnecting       uint64 // Number of addrConns in connecting state.
+	numTransientFailure uint64 // Number of addrConns in transientFailure.
+}
+
+// RecordTransition records state change happening in subConn and based on that
+// it evaluates what aggregated state should be.
+//
+//  - If at least one SubConn in Ready, the aggregated state is Ready;
+//  - Else if at least one SubConn in Connecting, the aggregated state is Connecting;
+//  - Else the aggregated state is TransientFailure.
+//
+// Idle and Shutdown are not considered.
+func (cse *ConnectivityStateEvaluator) RecordTransition(oldState, newState connectivity.State) connectivity.State {
+	// Update counters.
+	for idx, state := range []connectivity.State{oldState, newState} {
+		updateVal := 2*uint64(idx) - 1 // -1 for oldState and +1 for new.
+		switch state {
+		case connectivity.Ready:
+			cse.numReady += updateVal
+		case connectivity.Connecting:
+			cse.numConnecting += updateVal
+		case connectivity.TransientFailure:
+			cse.numTransientFailure += updateVal
+		}
+	}
+
+	// Evaluate.
+	if cse.numReady > 0 {
+		return connectivity.Ready
+	}
+	if cse.numConnecting > 0 {
+		return connectivity.Connecting
+	}
+	return connectivity.TransientFailure
+}

vendor/google.golang.org/grpc/balancer/base/BUILD

+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "balancer.go",
+        "base.go",
+    ],
+    importmap = "k8s.io/kubernetes/vendor/google.golang.org/grpc/balancer/base",
+    importpath = "google.golang.org/grpc/balancer/base",
+    visibility = ["//visibility:public"],
+    deps = [
+        "//vendor/golang.org/x/net/context:go_default_library",
+        "//vendor/google.golang.org/grpc/balancer:go_default_library",
+        "//vendor/google.golang.org/grpc/connectivity:go_default_library",
+        "//vendor/google.golang.org/grpc/grpclog:go_default_library",
+        "//vendor/google.golang.org/grpc/resolver:go_default_library",
+    ],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+)

vendor/google.golang.org/grpc/balancer/base/balancer.go

+/*
+ *
+ * Copyright 2017 gRPC 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 base
+
+import (
+	"golang.org/x/net/context"
+	"google.golang.org/grpc/balancer"
+	"google.golang.org/grpc/connectivity"
+	"google.golang.org/grpc/grpclog"
+	"google.golang.org/grpc/resolver"
+)
+
+type baseBuilder struct {
+	name          string
+	pickerBuilder PickerBuilder
+}
+
+func (bb *baseBuilder) Build(cc balancer.ClientConn, opt balancer.BuildOptions) balancer.Balancer {
+	return &baseBalancer{
+		cc:            cc,
+		pickerBuilder: bb.pickerBuilder,
+
+		subConns: make(map[resolver.Address]balancer.SubConn),
+		scStates: make(map[balancer.SubConn]connectivity.State),
+		csEvltr:  &connectivityStateEvaluator{},
+		// Initialize picker to a picker that always return
+		// ErrNoSubConnAvailable, because when state of a SubConn changes, we
+		// may call UpdateBalancerState with this picker.
+		picker: NewErrPicker(balancer.ErrNoSubConnAvailable),
+	}
+}
+
+func (bb *baseBuilder) Name() string {
+	return bb.name
+}
+
+type baseBalancer struct {
+	cc            balancer.ClientConn
+	pickerBuilder PickerBuilder
+
+	csEvltr *connectivityStateEvaluator
+	state   connectivity.State
+
+	subConns map[resolver.Address]balancer.SubConn
+	scStates map[balancer.SubConn]connectivity.State
+	picker   balancer.Picker
+}
+
+func (b *baseBalancer) HandleResolvedAddrs(addrs []resolver.Address, err error) {
+	if err != nil {
+		grpclog.Infof("base.baseBalancer: HandleResolvedAddrs called with error %v", err)
+		return
+	}
+	grpclog.Infoln("base.baseBalancer: got new resolved addresses: ", addrs)
+	// addrsSet is the set converted from addrs, it's used for quick lookup of an address.
+	addrsSet := make(map[resolver.Address]struct{})
+	for _, a := range addrs {
+		addrsSet[a] = struct{}{}
+		if _, ok := b.subConns[a]; !ok {
+			// a is a new address (not existing in b.subConns).
+			sc, err := b.cc.NewSubConn([]resolver.Address{a}, balancer.NewSubConnOptions{})
+			if err != nil {
+				grpclog.Warningf("base.baseBalancer: failed to create new SubConn: %v", err)
+				continue
+			}
+			b.subConns[a] = sc
+			b.scStates[sc] = connectivity.Idle
+			sc.Connect()
+		}
+	}
+	for a, sc := range b.subConns {
+		// a was removed by resolver.
+		if _, ok := addrsSet[a]; !ok {
+			b.cc.RemoveSubConn(sc)
+			delete(b.subConns, a)
+			// Keep the state of this sc in b.scStates until sc's state becomes Shutdown.
+			// The entry will be deleted in HandleSubConnStateChange.
+		}
+	}
+}
+
+// regeneratePicker takes a snapshot of the balancer, and generates a picker
+// from it. The picker is
+//  - errPicker with ErrTransientFailure if the balancer is in TransientFailure,
+//  - built by the pickerBuilder with all READY SubConns otherwise.
+func (b *baseBalancer) regeneratePicker() {
+	if b.state == connectivity.TransientFailure {
+		b.picker = NewErrPicker(balancer.ErrTransientFailure)
+		return
+	}
+	readySCs := make(map[resolver.Address]balancer.SubConn)
+
+	// Filter out all ready SCs from full subConn map.
+	for addr, sc := range b.subConns {
+		if st, ok := b.scStates[sc]; ok && st == connectivity.Ready {
+			readySCs[addr] = sc
+		}
+	}
+	b.picker = b.pickerBuilder.Build(readySCs)
+}
+
+func (b *baseBalancer) HandleSubConnStateChange(sc balancer.SubConn, s connectivity.State) {
+	grpclog.Infof("base.baseBalancer: handle SubConn state change: %p, %v", sc, s)
+	oldS, ok := b.scStates[sc]
+	if !ok {
+		grpclog.Infof("base.baseBalancer: got state changes for an unknown SubConn: %p, %v", sc, s)
+		return
+	}
+	b.scStates[sc] = s
+	switch s {
+	case connectivity.Idle:
+		sc.Connect()
+	case connectivity.Shutdown:
+		// When an address was removed by resolver, b called RemoveSubConn but
+		// kept the sc's state in scStates. Remove state for this sc here.
+		delete(b.scStates, sc)
+	}
+
+	oldAggrState := b.state
+	b.state = b.csEvltr.recordTransition(oldS, s)
+
+	// Regenerate picker when one of the following happens:
+	//  - this sc became ready from not-ready
+	//  - this sc became not-ready from ready
+	//  - the aggregated state of balancer became TransientFailure from non-TransientFailure
+	//  - the aggregated state of balancer became non-TransientFailure from TransientFailure
+	if (s == connectivity.Ready) != (oldS == connectivity.Ready) ||
+		(b.state == connectivity.TransientFailure) != (oldAggrState == connectivity.TransientFailure) {
+		b.regeneratePicker()
+	}
+
+	b.cc.UpdateBalancerState(b.state, b.picker)
+}
+
+// Close is a nop because base balancer doesn't have internal state to clean up,
+// and it doesn't need to call RemoveSubConn for the SubConns.
+func (b *baseBalancer) Close() {
+}
+
+// NewErrPicker returns a picker that always returns err on Pick().
+func NewErrPicker(err error) balancer.Picker {
+	return &errPicker{err: err}
+}
+
+type errPicker struct {
+	err error // Pick() always returns this err.
+}
+
+func (p *errPicker) Pick(ctx context.Context, opts balancer.PickOptions) (balancer.SubConn, func(balancer.DoneInfo), error) {
+	return nil, nil, p.err
+}
+
+// connectivityStateEvaluator gets updated by addrConns when their
+// states transition, based on which it evaluates the state of
+// ClientConn.
+type connectivityStateEvaluator struct {
+	numReady            uint64 // Number of addrConns in ready state.
+	numConnecting       uint64 // Number of addrConns in connecting state.
+	numTransientFailure uint64 // Number of addrConns in transientFailure.
+}
+
+// recordTransition records state change happening in every subConn and based on
+// that it evaluates what aggregated state should be.
+// It can only transition between Ready, Connecting and TransientFailure. Other states,
+// Idle and Shutdown are transitioned into by ClientConn; in the beginning of the connection
+// before any subConn is created ClientConn is in idle state. In the end when ClientConn
+// closes it is in Shutdown state.
+//
+// recordTransition should only be called synchronously from the same goroutine.
+func (cse *connectivityStateEvaluator) recordTransition(oldState, newState connectivity.State) connectivity.State {
+	// Update counters.
+	for idx, state := range []connectivity.State{oldState, newState} {
+		updateVal := 2*uint64(idx) - 1 // -1 for oldState and +1 for new.
+		switch state {
+		case connectivity.Ready:
+			cse.numReady += updateVal
+		case connectivity.Connecting:
+			cse.numConnecting += updateVal
+		case connectivity.TransientFailure:
+			cse.numTransientFailure += updateVal
+		}
+	}
+
+	// Evaluate.
+	if cse.numReady > 0 {
+		return connectivity.Ready
+	}
+	if cse.numConnecting > 0 {
+		return connectivity.Connecting
+	}
+	return connectivity.TransientFailure
+}

vendor/google.golang.org/grpc/balancer/base/base.go

+/*
+ *
+ * Copyright 2017 gRPC 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 base defines a balancer base that can be used to build balancers with
+// different picking algorithms.
+//
+// The base balancer creates a new SubConn for each resolved address. The
+// provided picker will only be notified about READY SubConns.
+//
+// This package is the base of round_robin balancer, its purpose is to be used
+// to build round_robin like balancers with complex picking algorithms.
+// Balancers with more complicated logic should try to implement a balancer
+// builder from scratch.
+//
+// All APIs in this package are experimental.
+package base
+
+import (
+	"google.golang.org/grpc/balancer"
+	"google.golang.org/grpc/resolver"
+)
+
+// PickerBuilder creates balancer.Picker.
+type PickerBuilder interface {
+	// Build takes a slice of ready SubConns, and returns a picker that will be
+	// used by gRPC to pick a SubConn.
+	Build(readySCs map[resolver.Address]balancer.SubConn) balancer.Picker
+}
+
+// NewBalancerBuilder returns a balancer builder. The balancers
+// built by this builder will use the picker builder to build pickers.
+func NewBalancerBuilder(name string, pb PickerBuilder) balancer.Builder {
+	return &baseBuilder{
+		name:          name,
+		pickerBuilder: pb,
+	}
+}

vendor/google.golang.org/grpc/balancer/roundrobin/BUILD

+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = ["roundrobin.go"],
+    importmap = "k8s.io/kubernetes/vendor/google.golang.org/grpc/balancer/roundrobin",
+    importpath = "google.golang.org/grpc/balancer/roundrobin",
+    visibility = ["//visibility:public"],
+    deps = [
+        "//vendor/golang.org/x/net/context:go_default_library",
+        "//vendor/google.golang.org/grpc/balancer:go_default_library",
+        "//vendor/google.golang.org/grpc/balancer/base:go_default_library",
+        "//vendor/google.golang.org/grpc/grpclog:go_default_library",
+        "//vendor/google.golang.org/grpc/resolver:go_default_library",
+    ],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+)

vendor/google.golang.org/grpc/balancer/roundrobin/roundrobin.go

+/*
+ *
+ * Copyright 2017 gRPC 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 roundrobin defines a roundrobin balancer. Roundrobin balancer is
+// installed as one of the default balancers in gRPC, users don't need to
+// explicitly install this balancer.
+package roundrobin
+
+import (
+	"sync"
+
+	"golang.org/x/net/context"
+	"google.golang.org/grpc/balancer"
+	"google.golang.org/grpc/balancer/base"
+	"google.golang.org/grpc/grpclog"
+	"google.golang.org/grpc/resolver"
+)
+
+// Name is the name of round_robin balancer.
+const Name = "round_robin"
+
+// newBuilder creates a new roundrobin balancer builder.
+func newBuilder() balancer.Builder {
+	return base.NewBalancerBuilder(Name, &rrPickerBuilder{})
+}
+
+func init() {
+	balancer.Register(newBuilder())
+}
+
+type rrPickerBuilder struct{}
+
+func (*rrPickerBuilder) Build(readySCs map[resolver.Address]balancer.SubConn) balancer.Picker {
+	grpclog.Infof("roundrobinPicker: newPicker called with readySCs: %v", readySCs)
+	var scs []balancer.SubConn
+	for _, sc := range readySCs {
+		scs = append(scs, sc)
+	}
+	return &rrPicker{
+		subConns: scs,
+	}
+}
+
+type rrPicker struct {
+	// subConns is the snapshot of the roundrobin balancer when this picker was
+	// created. The slice is immutable. Each Get() will do a round robin
+	// selection from it and return the selected SubConn.
+	subConns []balancer.SubConn
+
+	mu   sync.Mutex
+	next int
+}
+
+func (p *rrPicker) Pick(ctx context.Context, opts balancer.PickOptions) (balancer.SubConn, func(balancer.DoneInfo), error) {
+	if len(p.subConns) <= 0 {
+		return nil, nil, balancer.ErrNoSubConnAvailable
+	}
+
+	p.mu.Lock()
+	sc := p.subConns[p.next]
+	p.next = (p.next + 1) % len(p.subConns)
+	p.mu.Unlock()
+	return sc, nil, nil
+}

vendor/google.golang.org/grpc/balancer_conn_wrappers.go

@@ -19,6 +19,7 @@
 package grpc
 
 import (
+	"fmt"
 	"sync"
 
 	"google.golang.org/grpc/balancer"
@@ -73,7 +74,7 @@ func (b *scStateUpdateBuffer) load() {
 	}
 }
 
-// get returns the channel that receives a recvMsg in the buffer.
+// get returns the channel that the scStateUpdate will be sent to.
 //
 // Upon receiving, the caller should call load to send another
 // scStateChangeTuple onto the channel if there is any.
@@ -96,6 +97,9 @@ type ccBalancerWrapper struct {
 	stateChangeQueue *scStateUpdateBuffer
 	resolverUpdateCh chan *resolverUpdate
 	done             chan struct{}
+
+	mu       sync.Mutex
+	subConns map[*acBalancerWrapper]struct{}
 }
 
 func newCCBalancerWrapper(cc *ClientConn, b balancer.Builder, bopts balancer.BuildOptions) *ccBalancerWrapper {
@@ -104,21 +108,34 @@ func newCCBalancerWrapper(cc *ClientConn, b balancer.Builder, bopts balancer.Bui
 		stateChangeQueue: newSCStateUpdateBuffer(),
 		resolverUpdateCh: make(chan *resolverUpdate, 1),
 		done:             make(chan struct{}),
+		subConns:         make(map[*acBalancerWrapper]struct{}),
 	}
 	go ccb.watcher()
 	ccb.balancer = b.Build(ccb, bopts)
 	return ccb
 }
 
-// watcher balancer functions sequencially, so the balancer can be implemeneted
+// watcher balancer functions sequentially, so the balancer can be implemented
 // lock-free.
 func (ccb *ccBalancerWrapper) watcher() {
 	for {
 		select {
 		case t := <-ccb.stateChangeQueue.get():
 			ccb.stateChangeQueue.load()
+			select {
+			case <-ccb.done:
+				ccb.balancer.Close()
+				return
+			default:
+			}
 			ccb.balancer.HandleSubConnStateChange(t.sc, t.state)
 		case t := <-ccb.resolverUpdateCh:
+			select {
+			case <-ccb.done:
+				ccb.balancer.Close()
+				return
+			default:
+			}
 			ccb.balancer.HandleResolvedAddrs(t.addrs, t.err)
 		case <-ccb.done:
 		}
@@ -126,6 +143,13 @@ func (ccb *ccBalancerWrapper) watcher() {
 		select {
 		case <-ccb.done:
 			ccb.balancer.Close()
+			ccb.mu.Lock()
+			scs := ccb.subConns
+			ccb.subConns = nil
+			ccb.mu.Unlock()
+			for acbw := range scs {
+				ccb.cc.removeAddrConn(acbw.getAddrConn(), errConnDrain)
+			}
 			return
 		default:
 		}
@@ -165,33 +189,54 @@ func (ccb *ccBalancerWrapper) handleResolvedAddrs(addrs []resolver.Address, err
 }
 
 func (ccb *ccBalancerWrapper) NewSubConn(addrs []resolver.Address, opts balancer.NewSubConnOptions) (balancer.SubConn, error) {
-	grpclog.Infof("ccBalancerWrapper: new subconn: %v", addrs)
+	if len(addrs) <= 0 {
+		return nil, fmt.Errorf("grpc: cannot create SubConn with empty address list")
+	}
+	ccb.mu.Lock()
+	defer ccb.mu.Unlock()
+	if ccb.subConns == nil {
+		return nil, fmt.Errorf("grpc: ClientConn balancer wrapper was closed")
+	}
 	ac, err := ccb.cc.newAddrConn(addrs)
 	if err != nil {
 		return nil, err
 	}
 	acbw := &acBalancerWrapper{ac: ac}
-	ac.mu.Lock()
+	acbw.ac.mu.Lock()
 	ac.acbw = acbw
-	ac.mu.Unlock()
+	acbw.ac.mu.Unlock()
+	ccb.subConns[acbw] = struct{}{}
 	return acbw, nil
 }
 
 func (ccb *ccBalancerWrapper) RemoveSubConn(sc balancer.SubConn) {
-	grpclog.Infof("ccBalancerWrapper: removing subconn")
 	acbw, ok := sc.(*acBalancerWrapper)
 	if !ok {
 		return
 	}
+	ccb.mu.Lock()
+	defer ccb.mu.Unlock()
+	if ccb.subConns == nil {
+		return
+	}
+	delete(ccb.subConns, acbw)
 	ccb.cc.removeAddrConn(acbw.getAddrConn(), errConnDrain)
 }
 
 func (ccb *ccBalancerWrapper) UpdateBalancerState(s connectivity.State, p balancer.Picker) {
-	grpclog.Infof("ccBalancerWrapper: updating state and picker called by balancer: %v, %p", s, p)
+	ccb.mu.Lock()
+	defer ccb.mu.Unlock()
+	if ccb.subConns == nil {
+		return
+	}
 	ccb.cc.csMgr.updateState(s)
 	ccb.cc.blockingpicker.updatePicker(p)
 }
 
+func (ccb *ccBalancerWrapper) ResolveNow(o resolver.ResolveNowOption) {
+	ccb.cc.resolveNow(o)
+}
+
 func (ccb *ccBalancerWrapper) Target() string {
 	return ccb.cc.target
 }
@@ -204,9 +249,12 @@ type acBalancerWrapper struct {
 }
 
 func (acbw *acBalancerWrapper) UpdateAddresses(addrs []resolver.Address) {
-	grpclog.Infof("acBalancerWrapper: UpdateAddresses called with %v", addrs)
 	acbw.mu.Lock()
 	defer acbw.mu.Unlock()
+	if len(addrs) <= 0 {
+		acbw.ac.tearDown(errConnDrain)
+		return
+	}
 	if !acbw.ac.tryUpdateAddrs(addrs) {
 		cc := acbw.ac.cc
 		acbw.ac.mu.Lock()
@@ -234,7 +282,7 @@ func (acbw *acBalancerWrapper) UpdateAddresses(addrs []resolver.Address) {
 		ac.acbw = acbw
 		ac.mu.Unlock()
 		if acState != connectivity.Idle {
-			ac.connect(false)
+			ac.connect()
 		}
 	}
 }
@@ -242,7 +290,7 @@ func (acbw *acBalancerWrapper) UpdateAddresses(addrs []resolver.Address) {
 func (acbw *acBalancerWrapper) Connect() {
 	acbw.mu.Lock()
 	defer acbw.mu.Unlock()
-	acbw.ac.connect(false)
+	acbw.ac.connect()
 }
 
 func (acbw *acBalancerWrapper) getAddrConn() *addrConn {

vendor/google.golang.org/grpc/balancer_v1_wrapper.go

@@ -19,6 +19,7 @@
 package grpc
 
 import (
+	"strings"
 	"sync"
 
 	"golang.org/x/net/context"
@@ -27,6 +28,7 @@ import (
 	"google.golang.org/grpc/connectivity"
 	"google.golang.org/grpc/grpclog"
 	"google.golang.org/grpc/resolver"
+	"google.golang.org/grpc/status"
 )
 
 type balancerWrapperBuilder struct {
@@ -34,20 +36,27 @@ type balancerWrapperBuilder struct {
 }
 
 func (bwb *balancerWrapperBuilder) Build(cc balancer.ClientConn, opts balancer.BuildOptions) balancer.Balancer {
-	bwb.b.Start(cc.Target(), BalancerConfig{
+	targetAddr := cc.Target()
+	targetSplitted := strings.Split(targetAddr, ":///")
+	if len(targetSplitted) >= 2 {
+		targetAddr = targetSplitted[1]
+	}
+
+	bwb.b.Start(targetAddr, BalancerConfig{
 		DialCreds: opts.DialCreds,
 		Dialer:    opts.Dialer,
 	})
 	_, pickfirst := bwb.b.(*pickFirst)
 	bw := &balancerWrapper{
-		balancer:  bwb.b,
-		pickfirst: pickfirst,
-		cc:        cc,
-		startCh:   make(chan struct{}),
-		conns:     make(map[resolver.Address]balancer.SubConn),
-		connSt:    make(map[balancer.SubConn]*scState),
-		csEvltr:   &connectivityStateEvaluator{},
-		state:     connectivity.Idle,
+		balancer:   bwb.b,
+		pickfirst:  pickfirst,
+		cc:         cc,
+		targetAddr: targetAddr,
+		startCh:    make(chan struct{}),
+		conns:      make(map[resolver.Address]balancer.SubConn),
+		connSt:     make(map[balancer.SubConn]*scState),
+		csEvltr:    &balancer.ConnectivityStateEvaluator{},
+		state:      connectivity.Idle,
 	}
 	cc.UpdateBalancerState(connectivity.Idle, bw)
 	go bw.lbWatcher()
@@ -68,11 +77,8 @@ type balancerWrapper struct {
 	balancer  Balancer // The v1 balancer.
 	pickfirst bool
 
-	cc balancer.ClientConn
-
-	// To aggregate the connectivity state.
-	csEvltr *connectivityStateEvaluator
-	state   connectivity.State
+	cc         balancer.ClientConn
+	targetAddr string // Target without the scheme.
 
 	mu     sync.Mutex
 	conns  map[resolver.Address]balancer.SubConn
@@ -82,18 +88,21 @@ type balancerWrapper struct {
 	// - NewSubConn is created, cc wants to notify balancer of state changes;
 	// - Build hasn't return, cc doesn't have access to balancer.
 	startCh chan struct{}
+
+	// To aggregate the connectivity state.
+	csEvltr *balancer.ConnectivityStateEvaluator
+	state   connectivity.State
 }
 
 // lbWatcher watches the Notify channel of the balancer and manages
 // connections accordingly.
 func (bw *balancerWrapper) lbWatcher() {
 	<-bw.startCh
-	grpclog.Infof("balancerWrapper: is pickfirst: %v\n", bw.pickfirst)
 	notifyCh := bw.balancer.Notify()
 	if notifyCh == nil {
 		// There's no resolver in the balancer. Connect directly.
 		a := resolver.Address{
-			Addr: bw.cc.Target(),
+			Addr: bw.targetAddr,
 			Type: resolver.Backend,
 		}
 		sc, err := bw.cc.NewSubConn([]resolver.Address{a}, balancer.NewSubConnOptions{})
@@ -103,7 +112,7 @@ func (bw *balancerWrapper) lbWatcher() {
 			bw.mu.Lock()
 			bw.conns[a] = sc
 			bw.connSt[sc] = &scState{
-				addr: Address{Addr: bw.cc.Target()},
+				addr: Address{Addr: bw.targetAddr},
 				s:    connectivity.Idle,
 			}
 			bw.mu.Unlock()
@@ -165,10 +174,10 @@ func (bw *balancerWrapper) lbWatcher() {
 					sc.Connect()
 				}
 			} else {
-				oldSC.UpdateAddresses(newAddrs)
 				bw.mu.Lock()
 				bw.connSt[oldSC].addr = addrs[0]
 				bw.mu.Unlock()
+				oldSC.UpdateAddresses(newAddrs)
 			}
 		} else {
 			var (
@@ -221,7 +230,6 @@ func (bw *balancerWrapper) lbWatcher() {
 }
 
 func (bw *balancerWrapper) HandleSubConnStateChange(sc balancer.SubConn, s connectivity.State) {
-	grpclog.Infof("balancerWrapper: handle subconn state change: %p, %v", sc, s)
 	bw.mu.Lock()
 	defer bw.mu.Unlock()
 	scSt, ok := bw.connSt[sc]
@@ -240,7 +248,7 @@ func (bw *balancerWrapper) HandleSubConnStateChange(sc balancer.SubConn, s conne
 			scSt.down(errConnClosing)
 		}
 	}
-	sa := bw.csEvltr.recordTransition(oldS, s)
+	sa := bw.csEvltr.RecordTransition(oldS, s)
 	if bw.state != sa {
 		bw.state = sa
 	}
@@ -249,7 +257,6 @@ func (bw *balancerWrapper) HandleSubConnStateChange(sc balancer.SubConn, s conne
 		// Remove state for this sc.
 		delete(bw.connSt, sc)
 	}
-	return
 }
 
 func (bw *balancerWrapper) HandleResolvedAddrs([]resolver.Address, error) {
@@ -262,7 +269,6 @@ func (bw *balancerWrapper) HandleResolvedAddrs([]resolver.Address, error) {
 	}
 	// There should be a resolver inside the balancer.
 	// All updates here, if any, are ignored.
-	return
 }
 
 func (bw *balancerWrapper) Close() {
@@ -274,7 +280,6 @@ func (bw *balancerWrapper) Close() {
 		close(bw.startCh)
 	}
 	bw.balancer.Close()
-	return
 }
 
 // The picker is the balancerWrapper itself.
@@ -310,58 +315,14 @@ func (bw *balancerWrapper) Pick(ctx context.Context, opts balancer.PickOptions)
 			Metadata:   a.Metadata,
 		}]
 		if !ok && failfast {
-			return nil, nil, Errorf(codes.Unavailable, "there is no connection available")
+			return nil, nil, status.Errorf(codes.Unavailable, "there is no connection available")
 		}
 		if s, ok := bw.connSt[sc]; failfast && (!ok || s.s != connectivity.Ready) {
 			// If the returned sc is not ready and RPC is failfast,
 			// return error, and this RPC will fail.
-			return nil, nil, Errorf(codes.Unavailable, "there is no connection available")
+			return nil, nil, status.Errorf(codes.Unavailable, "there is no connection available")
 		}
 	}
 
 	return sc, done, nil
 }
-
-// connectivityStateEvaluator gets updated by addrConns when their
-// states transition, based on which it evaluates the state of
-// ClientConn.
-type connectivityStateEvaluator struct {
-	mu                  sync.Mutex
-	numReady            uint64 // Number of addrConns in ready state.
-	numConnecting       uint64 // Number of addrConns in connecting state.
-	numTransientFailure uint64 // Number of addrConns in transientFailure.
-}
-
-// recordTransition records state change happening in every subConn and based on
-// that it evaluates what aggregated state should be.
-// It can only transition between Ready, Connecting and TransientFailure. Other states,
-// Idle and Shutdown are transitioned into by ClientConn; in the beginning of the connection
-// before any subConn is created ClientConn is in idle state. In the end when ClientConn
-// closes it is in Shutdown state.
-// TODO Note that in later releases, a ClientConn with no activity will be put into an Idle state.
-func (cse *connectivityStateEvaluator) recordTransition(oldState, newState connectivity.State) connectivity.State {
-	cse.mu.Lock()
-	defer cse.mu.Unlock()
-
-	// Update counters.
-	for idx, state := range []connectivity.State{oldState, newState} {
-		updateVal := 2*uint64(idx) - 1 // -1 for oldState and +1 for new.
-		switch state {
-		case connectivity.Ready:
-			cse.numReady += updateVal
-		case connectivity.Connecting:
-			cse.numConnecting += updateVal
-		case connectivity.TransientFailure:
-			cse.numTransientFailure += updateVal
-		}
-	}
-
-	// Evaluate.
-	if cse.numReady > 0 {
-		return connectivity.Ready
-	}
-	if cse.numConnecting > 0 {
-		return connectivity.Connecting
-	}
-	return connectivity.TransientFailure
-}

vendor/google.golang.org/grpc/codec.go

@@ -19,86 +19,32 @@
 package grpc
 
 import (
-	"math"
-	"sync"
-
-	"github.com/golang/protobuf/proto"
+	"google.golang.org/grpc/encoding"
+	_ "google.golang.org/grpc/encoding/proto" // to register the Codec for "proto"
 )
 
+// baseCodec contains the functionality of both Codec and encoding.Codec, but
+// omits the name/string, which vary between the two and are not needed for
+// anything besides the registry in the encoding package.
+type baseCodec interface {
+	Marshal(v interface{}) ([]byte, error)
+	Unmarshal(data []byte, v interface{}) error
+}
+
+var _ baseCodec = Codec(nil)
+var _ baseCodec = encoding.Codec(nil)
+
 // Codec defines the interface gRPC uses to encode and decode messages.
 // Note that implementations of this interface must be thread safe;
 // a Codec's methods can be called from concurrent goroutines.
+//
+// Deprecated: use encoding.Codec instead.
 type Codec interface {
 	// Marshal returns the wire format of v.
 	Marshal(v interface{}) ([]byte, error)
 	// Unmarshal parses the wire format into v.
 	Unmarshal(data []byte, v interface{}) error
-	// String returns the name of the Codec implementation. The returned
-	// string will be used as part of content type in transmission.
+	// String returns the name of the Codec implementation.  This is unused by
+	// gRPC.
 	String() string
 }
-
-// protoCodec is a Codec implementation with protobuf. It is the default codec for gRPC.
-type protoCodec struct {
-}
-
-type cachedProtoBuffer struct {
-	lastMarshaledSize uint32
-	proto.Buffer
-}
-
-func capToMaxInt32(val int) uint32 {
-	if val > math.MaxInt32 {
-		return uint32(math.MaxInt32)
-	}
-	return uint32(val)
-}
-
-func (p protoCodec) marshal(v interface{}, cb *cachedProtoBuffer) ([]byte, error) {
-	protoMsg := v.(proto.Message)
-	newSlice := make([]byte, 0, cb.lastMarshaledSize)
-
-	cb.SetBuf(newSlice)
-	cb.Reset()
-	if err := cb.Marshal(protoMsg); err != nil {
-		return nil, err
-	}
-	out := cb.Bytes()
-	cb.lastMarshaledSize = capToMaxInt32(len(out))
-	return out, nil
-}
-
-func (p protoCodec) Marshal(v interface{}) ([]byte, error) {
-	cb := protoBufferPool.Get().(*cachedProtoBuffer)
-	out, err := p.marshal(v, cb)
-
-	// put back buffer and lose the ref to the slice
-	cb.SetBuf(nil)
-	protoBufferPool.Put(cb)
-	return out, err
-}
-
-func (p protoCodec) Unmarshal(data []byte, v interface{}) error {
-	cb := protoBufferPool.Get().(*cachedProtoBuffer)
-	cb.SetBuf(data)
-	v.(proto.Message).Reset()
-	err := cb.Unmarshal(v.(proto.Message))
-	cb.SetBuf(nil)
-	protoBufferPool.Put(cb)
-	return err
-}
-
-func (protoCodec) String() string {
-	return "proto"
-}
-
-var (
-	protoBufferPool = &sync.Pool{
-		New: func() interface{} {
-			return &cachedProtoBuffer{
-				Buffer:            proto.Buffer{},
-				lastMarshaledSize: 16,
-			}
-		},
-	}
-)

vendor/google.golang.org/grpc/codes/code_string.go

-// Code generated by "stringer -type=Code"; DO NOT EDIT.
+/*
+ *
+ * Copyright 2017 gRPC 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 codes
 
-import "fmt"
+import "strconv"
 
-const _Code_name = "OKCanceledUnknownInvalidArgumentDeadlineExceededNotFoundAlreadyExistsPermissionDeniedResourceExhaustedFailedPreconditionAbortedOutOfRangeUnimplementedInternalUnavailableDataLossUnauthenticated"
-
-var _Code_index = [...]uint8{0, 2, 10, 17, 32, 48, 56, 69, 85, 102, 120, 127, 137, 150, 158, 169, 177, 192}
-
-func (i Code) String() string {
-	if i >= Code(len(_Code_index)-1) {
-		return fmt.Sprintf("Code(%d)", i)
+func (c Code) String() string {
+	switch c {
+	case OK:
+		return "OK"
+	case Canceled:
+		return "Canceled"
+	case Unknown:
+		return "Unknown"
+	case InvalidArgument:
+		return "InvalidArgument"
+	case DeadlineExceeded:
+		return "DeadlineExceeded"
+	case NotFound:
+		return "NotFound"
+	case AlreadyExists:
+		return "AlreadyExists"
+	case PermissionDenied:
+		return "PermissionDenied"
+	case ResourceExhausted:
+		return "ResourceExhausted"
+	case FailedPrecondition:
+		return "FailedPrecondition"
+	case Aborted:
+		return "Aborted"
+	case OutOfRange:
+		return "OutOfRange"
+	case Unimplemented:
+		return "Unimplemented"
+	case Internal:
+		return "Internal"
+	case Unavailable:
+		return "Unavailable"
+	case DataLoss:
+		return "DataLoss"
+	case Unauthenticated:
+		return "Unauthenticated"
+	default:
+		return "Code(" + strconv.FormatInt(int64(c), 10) + ")"
 	}
-	return _Code_name[_Code_index[i]:_Code_index[i+1]]
 }

vendor/google.golang.org/grpc/codes/codes.go

@@ -20,11 +20,14 @@
 // consistent across various languages.
 package codes
 
+import (
+	"fmt"
+	"strconv"
+)
+
 // A Code is an unsigned 32-bit error code as defined in the gRPC spec.
 type Code uint32
 
-//go:generate stringer -type=Code
-
 const (
 	// OK is returned on success.
 	OK Code = 0
@@ -32,9 +35,9 @@ const (
 	// Canceled indicates the operation was canceled (typically by the caller).
 	Canceled Code = 1
 
-	// Unknown error.  An example of where this error may be returned is
+	// Unknown error. An example of where this error may be returned is
 	// if a Status value received from another address space belongs to
-	// an error-space that is not known in this address space.  Also
+	// an error-space that is not known in this address space. Also
 	// errors raised by APIs that do not return enough error information
 	// may be converted to this error.
 	Unknown Code = 2
@@ -63,15 +66,11 @@ const (
 	// PermissionDenied indicates the caller does not have permission to
 	// execute the specified operation. It must not be used for rejections
 	// caused by exhausting some resource (use ResourceExhausted
-	// instead for those errors).  It must not be
+	// instead for those errors). It must not be
 	// used if the caller cannot be identified (use Unauthenticated
 	// instead for those errors).
 	PermissionDenied Code = 7
 
-	// Unauthenticated indicates the request does not have valid
-	// authentication credentials for the operation.
-	Unauthenticated Code = 16
-
 	// ResourceExhausted indicates some resource has been exhausted, perhaps
 	// a per-user quota, or perhaps the entire file system is out of space.
 	ResourceExhausted Code = 8
@@ -87,7 +86,7 @@ const (
 	//  (b) Use Aborted if the client should retry at a higher-level
 	//      (e.g., restarting a read-modify-write sequence).
 	//  (c) Use FailedPrecondition if the client should not retry until
-	//      the system state has been explicitly fixed.  E.g., if an "rmdir"
+	//      the system state has been explicitly fixed. E.g., if an "rmdir"
 	//      fails because the directory is non-empty, FailedPrecondition
 	//      should be returned since the client should not retry unless
 	//      they have first fixed up the directory by deleting files from it.
@@ -116,7 +115,7 @@ const (
 	// file size.
 	//
 	// There is a fair bit of overlap between FailedPrecondition and
-	// OutOfRange.  We recommend using OutOfRange (the more specific
+	// OutOfRange. We recommend using OutOfRange (the more specific
 	// error) when it applies so that callers who are iterating through
 	// a space can easily look for an OutOfRange error to detect when
 	// they are done.
@@ -126,8 +125,8 @@ const (
 	// supported/enabled in this service.
 	Unimplemented Code = 12
 
-	// Internal errors.  Means some invariants expected by underlying
-	// system has been broken.  If you see one of these errors,
+	// Internal errors. Means some invariants expected by underlying
+	// system has been broken. If you see one of these errors,
 	// something is very broken.
 	Internal Code = 13
 
@@ -141,4 +140,58 @@ const (
 
 	// DataLoss indicates unrecoverable data loss or corruption.
 	DataLoss Code = 15
+
+	// Unauthenticated indicates the request does not have valid
+	// authentication credentials for the operation.
+	Unauthenticated Code = 16
+
+	_maxCode = 17
 )
+
+var strToCode = map[string]Code{
+	`"OK"`: OK,
+	`"CANCELLED"`:/* [sic] */ Canceled,
+	`"UNKNOWN"`:             Unknown,
+	`"INVALID_ARGUMENT"`:    InvalidArgument,
+	`"DEADLINE_EXCEEDED"`:   DeadlineExceeded,
+	`"NOT_FOUND"`:           NotFound,
+	`"ALREADY_EXISTS"`:      AlreadyExists,
+	`"PERMISSION_DENIED"`:   PermissionDenied,
+	`"RESOURCE_EXHAUSTED"`:  ResourceExhausted,
+	`"FAILED_PRECONDITION"`: FailedPrecondition,
+	`"ABORTED"`:             Aborted,
+	`"OUT_OF_RANGE"`:        OutOfRange,
+	`"UNIMPLEMENTED"`:       Unimplemented,
+	`"INTERNAL"`:            Internal,
+	`"UNAVAILABLE"`:         Unavailable,
+	`"DATA_LOSS"`:           DataLoss,
+	`"UNAUTHENTICATED"`:     Unauthenticated,
+}
+
+// UnmarshalJSON unmarshals b into the Code.
+func (c *Code) UnmarshalJSON(b []byte) error {
+	// From json.Unmarshaler: By convention, to approximate the behavior of
+	// Unmarshal itself, Unmarshalers implement UnmarshalJSON([]byte("null")) as
+	// a no-op.
+	if string(b) == "null" {
+		return nil
+	}
+	if c == nil {
+		return fmt.Errorf("nil receiver passed to UnmarshalJSON")
+	}
+
+	if ci, err := strconv.ParseUint(string(b), 10, 32); err == nil {
+		if ci >= _maxCode {
+			return fmt.Errorf("invalid code: %q", ci)
+		}
+
+		*c = Code(ci)
+		return nil
+	}
+
+	if jc, ok := strToCode[string(b)]; ok {
+		*c = jc
+		return nil
+	}
+	return fmt.Errorf("invalid code: %q", string(b))
+}

vendor/google.golang.org/grpc/credentials/credentials.go

@@ -34,10 +34,8 @@ import (
 	"golang.org/x/net/context"
 )
 
-var (
-	// alpnProtoStr are the specified application level protocols for gRPC.
-	alpnProtoStr = []string{"h2"}
-)
+// alpnProtoStr are the specified application level protocols for gRPC.
+var alpnProtoStr = []string{"h2"}
 
 // PerRPCCredentials defines the common interface for the credentials which need to
 // attach security information to every RPC (e.g., oauth2).
@@ -45,8 +43,9 @@ type PerRPCCredentials interface {
 	// GetRequestMetadata gets the current request metadata, refreshing
 	// tokens if required. This should be called by the transport layer on
 	// each request, and the data should be populated in headers or other
-	// context. uri is the URI of the entry point for the request. When
-	// supported by the underlying implementation, ctx can be used for
+	// context. If a status code is returned, it will be used as the status
+	// for the RPC. uri is the URI of the entry point for the request.
+	// When supported by the underlying implementation, ctx can be used for
 	// timeout and cancellation.
 	// TODO(zhaoq): Define the set of the qualified keys instead of leaving
 	// it as an arbitrary string.
@@ -74,11 +73,9 @@ type AuthInfo interface {
 	AuthType() string
 }
 
-var (
-	// ErrConnDispatched indicates that rawConn has been dispatched out of gRPC
-	// and the caller should not close rawConn.
-	ErrConnDispatched = errors.New("credentials: rawConn is dispatched out of gRPC")
-)
+// ErrConnDispatched indicates that rawConn has been dispatched out of gRPC
+// and the caller should not close rawConn.
+var ErrConnDispatched = errors.New("credentials: rawConn is dispatched out of gRPC")
 
 // TransportCredentials defines the common interface for all the live gRPC wire
 // protocols and supported transport security protocols (e.g., TLS, SSL).
@@ -135,15 +132,15 @@ func (c tlsCreds) Info() ProtocolInfo {
 	}
 }
 
-func (c *tlsCreds) ClientHandshake(ctx context.Context, addr string, rawConn net.Conn) (_ net.Conn, _ AuthInfo, err error) {
+func (c *tlsCreds) ClientHandshake(ctx context.Context, authority string, rawConn net.Conn) (_ net.Conn, _ AuthInfo, err error) {
 	// use local cfg to avoid clobbering ServerName if using multiple endpoints
 	cfg := cloneTLSConfig(c.config)
 	if cfg.ServerName == "" {
-		colonPos := strings.LastIndex(addr, ":")
+		colonPos := strings.LastIndex(authority, ":")
 		if colonPos == -1 {
-			colonPos = len(addr)
+			colonPos = len(authority)
 		}
-		cfg.ServerName = addr[:colonPos]
+		cfg.ServerName = authority[:colonPos]
 	}
 	conn := tls.Client(rawConn, cfg)
 	errChannel := make(chan error, 1)

vendor/google.golang.org/grpc/encoding/BUILD

+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = ["encoding.go"],
+    importmap = "k8s.io/kubernetes/vendor/google.golang.org/grpc/encoding",
+    importpath = "google.golang.org/grpc/encoding",
+    visibility = ["//visibility:public"],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [
+        ":package-srcs",
+        "//vendor/google.golang.org/grpc/encoding/proto:all-srcs",
+    ],
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+)

vendor/google.golang.org/grpc/encoding/encoding.go

+/*
+ *
+ * Copyright 2017 gRPC 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 encoding defines the interface for the compressor and codec, and
+// functions to register and retrieve compressors and codecs.
+//
+// This package is EXPERIMENTAL.
+package encoding
+
+import (
+	"io"
+	"strings"
+)
+
+// Identity specifies the optional encoding for uncompressed streams.
+// It is intended for grpc internal use only.
+const Identity = "identity"
+
+// Compressor is used for compressing and decompressing when sending or
+// receiving messages.
+type Compressor interface {
+	// Compress writes the data written to wc to w after compressing it.  If an
+	// error occurs while initializing the compressor, that error is returned
+	// instead.
+	Compress(w io.Writer) (io.WriteCloser, error)
+	// Decompress reads data from r, decompresses it, and provides the
+	// uncompressed data via the returned io.Reader.  If an error occurs while
+	// initializing the decompressor, that error is returned instead.
+	Decompress(r io.Reader) (io.Reader, error)
+	// Name is the name of the compression codec and is used to set the content
+	// coding header.  The result must be static; the result cannot change
+	// between calls.
+	Name() string
+}
+
+var registeredCompressor = make(map[string]Compressor)
+
+// RegisterCompressor registers the compressor with gRPC by its name.  It can
+// be activated when sending an RPC via grpc.UseCompressor().  It will be
+// automatically accessed when receiving a message based on the content coding
+// header.  Servers also use it to send a response with the same encoding as
+// the request.
+//
+// NOTE: this function must only be called during initialization time (i.e. in
+// an init() function), and is not thread-safe.  If multiple Compressors are
+// registered with the same name, the one registered last will take effect.
+func RegisterCompressor(c Compressor) {
+	registeredCompressor[c.Name()] = c
+}
+
+// GetCompressor returns Compressor for the given compressor name.
+func GetCompressor(name string) Compressor {
+	return registeredCompressor[name]
+}
+
+// Codec defines the interface gRPC uses to encode and decode messages.  Note
+// that implementations of this interface must be thread safe; a Codec's
+// methods can be called from concurrent goroutines.
+type Codec interface {
+	// Marshal returns the wire format of v.
+	Marshal(v interface{}) ([]byte, error)
+	// Unmarshal parses the wire format into v.
+	Unmarshal(data []byte, v interface{}) error
+	// Name returns the name of the Codec implementation. The returned string
+	// will be used as part of content type in transmission.  The result must be
+	// static; the result cannot change between calls.
+	Name() string
+}
+
+var registeredCodecs = make(map[string]Codec)
+
+// RegisterCodec registers the provided Codec for use with all gRPC clients and
+// servers.
+//
+// The Codec will be stored and looked up by result of its Name() method, which
+// should match the content-subtype of the encoding handled by the Codec.  This
+// is case-insensitive, and is stored and looked up as lowercase.  If the
+// result of calling Name() is an empty string, RegisterCodec will panic. See
+// Content-Type on
+// https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md#requests for
+// more details.
+//
+// NOTE: this function must only be called during initialization time (i.e. in
+// an init() function), and is not thread-safe.  If multiple Compressors are
+// registered with the same name, the one registered last will take effect.
+func RegisterCodec(codec Codec) {
+	if codec == nil {
+		panic("cannot register a nil Codec")
+	}
+	contentSubtype := strings.ToLower(codec.Name())
+	if contentSubtype == "" {
+		panic("cannot register Codec with empty string result for String()")
+	}
+	registeredCodecs[contentSubtype] = codec
+}
+
+// GetCodec gets a registered Codec by content-subtype, or nil if no Codec is
+// registered for the content-subtype.
+//
+// The content-subtype is expected to be lowercase.
+func GetCodec(contentSubtype string) Codec {
+	return registeredCodecs[contentSubtype]
+}

vendor/google.golang.org/grpc/encoding/proto/BUILD

+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = ["proto.go"],
+    importmap = "k8s.io/kubernetes/vendor/google.golang.org/grpc/encoding/proto",
+    importpath = "google.golang.org/grpc/encoding/proto",
+    visibility = ["//visibility:public"],
+    deps = [
+        "//vendor/github.com/golang/protobuf/proto:go_default_library",
+        "//vendor/google.golang.org/grpc/encoding:go_default_library",
+    ],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+)

vendor/google.golang.org/grpc/encoding/proto/proto.go

+/*
+ *
+ * Copyright 2018 gRPC 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 proto defines the protobuf codec. Importing this package will
+// register the codec.
+package proto
+
+import (
+	"math"
+	"sync"
+
+	"github.com/golang/protobuf/proto"
+	"google.golang.org/grpc/encoding"
+)
+
+// Name is the name registered for the proto compressor.
+const Name = "proto"
+
+func init() {
+	encoding.RegisterCodec(codec{})
+}
+
+// codec is a Codec implementation with protobuf. It is the default codec for gRPC.
+type codec struct{}
+
+type cachedProtoBuffer struct {
+	lastMarshaledSize uint32
+	proto.Buffer
+}
+
+func capToMaxInt32(val int) uint32 {
+	if val > math.MaxInt32 {
+		return uint32(math.MaxInt32)
+	}
+	return uint32(val)
+}
+
+func marshal(v interface{}, cb *cachedProtoBuffer) ([]byte, error) {
+	protoMsg := v.(proto.Message)
+	newSlice := make([]byte, 0, cb.lastMarshaledSize)
+
+	cb.SetBuf(newSlice)
+	cb.Reset()
+	if err := cb.Marshal(protoMsg); err != nil {
+		return nil, err
+	}
+	out := cb.Bytes()
+	cb.lastMarshaledSize = capToMaxInt32(len(out))
+	return out, nil
+}
+
+func (codec) Marshal(v interface{}) ([]byte, error) {
+	if pm, ok := v.(proto.Marshaler); ok {
+		// object can marshal itself, no need for buffer
+		return pm.Marshal()
+	}
+
+	cb := protoBufferPool.Get().(*cachedProtoBuffer)
+	out, err := marshal(v, cb)
+
+	// put back buffer and lose the ref to the slice
+	cb.SetBuf(nil)
+	protoBufferPool.Put(cb)
+	return out, err
+}
+
+func (codec) Unmarshal(data []byte, v interface{}) error {
+	protoMsg := v.(proto.Message)
+	protoMsg.Reset()
+
+	if pu, ok := protoMsg.(proto.Unmarshaler); ok {
+		// object can unmarshal itself, no need for buffer
+		return pu.Unmarshal(data)
+	}
+
+	cb := protoBufferPool.Get().(*cachedProtoBuffer)
+	cb.SetBuf(data)
+	err := cb.Unmarshal(protoMsg)
+	cb.SetBuf(nil)
+	protoBufferPool.Put(cb)
+	return err
+}
+
+func (codec) Name() string {
+	return Name
+}
+
+var protoBufferPool = &sync.Pool{
+	New: func() interface{} {
+		return &cachedProtoBuffer{
+			Buffer:            proto.Buffer{},
+			lastMarshaledSize: 16,
+		}
+	},
+}

vendor/google.golang.org/grpc/envconfig.go

+/*
+ *
+ * Copyright 2018 gRPC 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 grpc
+
+import (
+	"os"
+	"strings"
+)
+
+const (
+	envConfigPrefix        = "GRPC_GO_"
+	envConfigStickinessStr = envConfigPrefix + "STICKINESS"
+)
+
+var (
+	envConfigStickinessOn bool
+)
+
+func init() {
+	envConfigStickinessOn = strings.EqualFold(os.Getenv(envConfigStickinessStr), "on")
+}

vendor/google.golang.org/grpc/go16.go

+// +build go1.6,!go1.7
+
+/*
+ *
+ * Copyright 2016 gRPC 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 grpc
+
+import (
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+
+	"golang.org/x/net/context"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+	"google.golang.org/grpc/transport"
+)
+
+// dialContext connects to the address on the named network.
+func dialContext(ctx context.Context, network, address string) (net.Conn, error) {
+	return (&net.Dialer{Cancel: ctx.Done()}).Dial(network, address)
+}
+
+func sendHTTPRequest(ctx context.Context, req *http.Request, conn net.Conn) error {
+	req.Cancel = ctx.Done()
+	if err := req.Write(conn); err != nil {
+		return fmt.Errorf("failed to write the HTTP request: %v", err)
+	}
+	return nil
+}
+
+// toRPCErr converts an error into an error from the status package.
+func toRPCErr(err error) error {
+	if err == nil || err == io.EOF {
+		return err
+	}
+	if _, ok := status.FromError(err); ok {
+		return err
+	}
+	switch e := err.(type) {
+	case transport.StreamError:
+		return status.Error(e.Code, e.Desc)
+	case transport.ConnectionError:
+		return status.Error(codes.Unavailable, e.Desc)
+	default:
+		switch err {
+		case context.DeadlineExceeded:
+			return status.Error(codes.DeadlineExceeded, err.Error())
+		case context.Canceled:
+			return status.Error(codes.Canceled, err.Error())
+		}
+	}
+	return status.Error(codes.Unknown, err.Error())
+}

vendor/google.golang.org/grpc/go17.go

+// +build go1.7
+
+/*
+ *
+ * Copyright 2016 gRPC 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 grpc
+
+import (
+	"context"
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+
+	netctx "golang.org/x/net/context"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+	"google.golang.org/grpc/transport"
+)
+
+// dialContext connects to the address on the named network.
+func dialContext(ctx context.Context, network, address string) (net.Conn, error) {
+	return (&net.Dialer{}).DialContext(ctx, network, address)
+}
+
+func sendHTTPRequest(ctx context.Context, req *http.Request, conn net.Conn) error {
+	req = req.WithContext(ctx)
+	if err := req.Write(conn); err != nil {
+		return fmt.Errorf("failed to write the HTTP request: %v", err)
+	}
+	return nil
+}
+
+// toRPCErr converts an error into an error from the status package.
+func toRPCErr(err error) error {
+	if err == nil || err == io.EOF {
+		return err
+	}
+	if _, ok := status.FromError(err); ok {
+		return err
+	}
+	switch e := err.(type) {
+	case transport.StreamError:
+		return status.Error(e.Code, e.Desc)
+	case transport.ConnectionError:
+		return status.Error(codes.Unavailable, e.Desc)
+	default:
+		switch err {
+		case context.DeadlineExceeded, netctx.DeadlineExceeded:
+			return status.Error(codes.DeadlineExceeded, err.Error())
+		case context.Canceled, netctx.Canceled:
+			return status.Error(codes.Canceled, err.Error())
+		}
+	}
+	return status.Error(codes.Unknown, err.Error())
+}

vendor/google.golang.org/grpc/grpclb/grpc_lb_v1/messages/BUILD

@@ -6,7 +6,11 @@ go_library(
     importmap = "k8s.io/kubernetes/vendor/google.golang.org/grpc/grpclb/grpc_lb_v1/messages",
     importpath = "google.golang.org/grpc/grpclb/grpc_lb_v1/messages",
     visibility = ["//visibility:public"],
-    deps = ["//vendor/github.com/golang/protobuf/proto:go_default_library"],
+    deps = [
+        "//vendor/github.com/golang/protobuf/proto:go_default_library",
+        "//vendor/github.com/golang/protobuf/ptypes/duration:go_default_library",
+        "//vendor/github.com/golang/protobuf/ptypes/timestamp:go_default_library",
+    ],
 )
 
 filegroup(

vendor/google.golang.org/grpc/grpclb/grpc_lb_v1/messages/messages.proto

@@ -14,35 +14,11 @@
 
 syntax = "proto3";
 
-package grpc.lb.v1;
-option go_package = "messages";
-
-message Duration {
-  // Signed seconds of the span of time. Must be from -315,576,000,000
-  // to +315,576,000,000 inclusive.
-  int64 seconds = 1;
-
-  // Signed fractions of a second at nanosecond resolution of the span
-  // of time. Durations less than one second are represented with a 0
-  // `seconds` field and a positive or negative `nanos` field. For durations
-  // of one second or more, a non-zero value for the `nanos` field must be
-  // of the same sign as the `seconds` field. Must be from -999,999,999
-  // to +999,999,999 inclusive.
-  int32 nanos = 2;
-}
+import "google/protobuf/duration.proto";
+import "google/protobuf/timestamp.proto";
 
-message Timestamp {
-  // Represents seconds of UTC time since Unix epoch
-  // 1970-01-01T00:00:00Z. Must be from 0001-01-01T00:00:00Z to
-  // 9999-12-31T23:59:59Z inclusive.
-  int64 seconds = 1;
-
-  // Non-negative fractions of a second at nanosecond resolution. Negative
-  // second values with fractions must still have non-negative nanos values
-  // that count forward in time. Must be from 0 to 999,999,999
-  // inclusive.
-  int32 nanos = 2;
-}
+package grpc.lb.v1;
+option go_package = "google.golang.org/grpc/grpclb/grpc_lb_v1/messages";
 
 message LoadBalanceRequest {
   oneof load_balance_request_type {
@@ -56,16 +32,25 @@ message LoadBalanceRequest {
 }
 
 message InitialLoadBalanceRequest {
-  // Name of load balanced service (IE, balancer.service.com)
+  // Name of load balanced service (IE, balancer.service.com). Its
   // length should be less than 256 bytes.
   string name = 1;
 }
 
+// Contains the number of calls finished for a particular load balance token.
+message ClientStatsPerToken {
+  // See Server.load_balance_token.
+  string load_balance_token = 1;
+
+  // The total number of RPCs that finished associated with the token.
+  int64 num_calls = 2;
+}
+
 // Contains client level statistics that are useful to load balancing. Each
 // count except the timestamp should be reset to zero after reporting the stats.
 message ClientStats {
   // The timestamp of generating the report.
-  Timestamp timestamp = 1;
+  google.protobuf.Timestamp timestamp = 1;
 
   // The total number of RPCs that started.
   int64 num_calls_started = 2;
@@ -73,20 +58,17 @@ message ClientStats {
   // The total number of RPCs that finished.
   int64 num_calls_finished = 3;
 
-  // The total number of RPCs that were dropped by the client because of rate
-  // limiting.
-  int64 num_calls_finished_with_drop_for_rate_limiting = 4;
-
-  // The total number of RPCs that were dropped by the client because of load
-  // balancing.
-  int64 num_calls_finished_with_drop_for_load_balancing = 5;
-
   // The total number of RPCs that failed to reach a server except dropped RPCs.
   int64 num_calls_finished_with_client_failed_to_send = 6;
 
   // The total number of RPCs that finished and are known to have been received
   // by a server.
   int64 num_calls_finished_known_received = 7;
+
+  // The list of dropped calls.
+  repeated ClientStatsPerToken calls_finished_with_drop = 8;
+
+  reserved 4, 5;
 }
 
 message LoadBalanceResponse {
@@ -111,7 +93,7 @@ message InitialLoadBalanceResponse {
   // This interval defines how often the client should send the client stats
   // to the load balancer. Stats should only be reported when the duration is
   // positive.
-  Duration client_stats_report_interval = 2;
+  google.protobuf.Duration client_stats_report_interval = 2;
 }
 
 message ServerList {
@@ -125,10 +107,8 @@ message ServerList {
   reserved 3;
 }
 
-// Contains server information. When none of the [drop_for_*] fields are true,
-// use the other fields. When drop_for_rate_limiting is true, ignore all other
-// fields. Use drop_for_load_balancing only when it is true and
-// drop_for_rate_limiting is false.
+// Contains server information. When the drop field is not true, use the other
+// fields.
 message Server {
   // A resolved address for the server, serialized in network-byte-order. It may
   // either be an IPv4 or IPv6 address.
@@ -140,16 +120,14 @@ message Server {
   // An opaque but printable token given to the frontend for each pick. All
   // frontend requests for that pick must include the token in its initial
   // metadata. The token is used by the backend to verify the request and to
-  // allow the backend to report load to the gRPC LB system.
-  //
-  // Its length is variable but less than 50 bytes.
+  // allow the backend to report load to the gRPC LB system. The token is also
+  // used in client stats for reporting dropped calls.
   string load_balance_token = 3;
 
-  // Indicates whether this particular request should be dropped by the client
-  // for rate limiting.
-  bool drop_for_rate_limiting = 4;
+  // Indicates whether this particular request should be dropped by the client.
+  // If the request is dropped, there will be a corresponding entry in
+  // ClientStats.calls_finished_with_drop.
+  bool drop = 4;
 
-  // Indicates whether this particular request should be dropped by the client
-  // for load balancing.
-  bool drop_for_load_balancing = 5;
+  reserved 5;
 }

vendor/google.golang.org/grpc/grpclog/grpclog.go

@@ -105,18 +105,21 @@ func Fatalln(args ...interface{}) {
 }
 
 // Print prints to the logger. Arguments are handled in the manner of fmt.Print.
+//
 // Deprecated: use Info.
 func Print(args ...interface{}) {
 	logger.Info(args...)
 }
 
 // Printf prints to the logger. Arguments are handled in the manner of fmt.Printf.
+//
 // Deprecated: use Infof.
 func Printf(format string, args ...interface{}) {
 	logger.Infof(format, args...)
 }
 
 // Println prints to the logger. Arguments are handled in the manner of fmt.Println.
+//
 // Deprecated: use Infoln.
 func Println(args ...interface{}) {
 	logger.Infoln(args...)

vendor/google.golang.org/grpc/grpclog/logger.go

@@ -19,6 +19,7 @@
 package grpclog
 
 // Logger mimics golang's standard Logger as an interface.
+//
 // Deprecated: use LoggerV2.
 type Logger interface {
 	Fatal(args ...interface{})
@@ -31,6 +32,7 @@ type Logger interface {
 
 // SetLogger sets the logger that is used in grpc. Call only from
 // init() functions.
+//
 // Deprecated: use SetLoggerV2.
 func SetLogger(l Logger) {
 	logger = &loggerWrapper{Logger: l}

vendor/google.golang.org/grpc/health/BUILD

@@ -8,9 +8,9 @@ go_library(
     visibility = ["//visibility:public"],
     deps = [
         "//vendor/golang.org/x/net/context:go_default_library",
-        "//vendor/google.golang.org/grpc:go_default_library",
         "//vendor/google.golang.org/grpc/codes:go_default_library",
         "//vendor/google.golang.org/grpc/health/grpc_health_v1:go_default_library",
+        "//vendor/google.golang.org/grpc/status:go_default_library",
     ],
 )
 

vendor/google.golang.org/grpc/health/grpc_health_v1/health.pb.go

 // Code generated by protoc-gen-go. DO NOT EDIT.
-// source: grpc_health_v1/health.proto
+// source: grpc/health/v1/health.proto
 
-/*
-Package grpc_health_v1 is a generated protocol buffer package.
-
-It is generated from these files:
-	grpc_health_v1/health.proto
-
-It has these top-level messages:
-	HealthCheckRequest
-	HealthCheckResponse
-*/
 package grpc_health_v1
 
 import proto "github.com/golang/protobuf/proto"
@@ -56,17 +46,39 @@ func (x HealthCheckResponse_ServingStatus) String() string {
 	return proto.EnumName(HealthCheckResponse_ServingStatus_name, int32(x))
 }
 func (HealthCheckResponse_ServingStatus) EnumDescriptor() ([]byte, []int) {
-	return fileDescriptor0, []int{1, 0}
+	return fileDescriptor_health_85731b6c49265086, []int{1, 0}
 }
 
 type HealthCheckRequest struct {
-	Service string `protobuf:"bytes,1,opt,name=service" json:"service,omitempty"`
+	Service              string   `protobuf:"bytes,1,opt,name=service,proto3" json:"service,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *HealthCheckRequest) Reset()         { *m = HealthCheckRequest{} }
+func (m *HealthCheckRequest) String() string { return proto.CompactTextString(m) }
+func (*HealthCheckRequest) ProtoMessage()    {}
+func (*HealthCheckRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_health_85731b6c49265086, []int{0}
+}
+func (m *HealthCheckRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_HealthCheckRequest.Unmarshal(m, b)
+}
+func (m *HealthCheckRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_HealthCheckRequest.Marshal(b, m, deterministic)
+}
+func (dst *HealthCheckRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_HealthCheckRequest.Merge(dst, src)
+}
+func (m *HealthCheckRequest) XXX_Size() int {
+	return xxx_messageInfo_HealthCheckRequest.Size(m)
+}
+func (m *HealthCheckRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_HealthCheckRequest.DiscardUnknown(m)
 }
 
-func (m *HealthCheckRequest) Reset()                    { *m = HealthCheckRequest{} }
-func (m *HealthCheckRequest) String() string            { return proto.CompactTextString(m) }
-func (*HealthCheckRequest) ProtoMessage()               {}
-func (*HealthCheckRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
+var xxx_messageInfo_HealthCheckRequest proto.InternalMessageInfo
 
 func (m *HealthCheckRequest) GetService() string {
 	if m != nil {
@@ -76,13 +88,35 @@ func (m *HealthCheckRequest) GetService() string {
 }
 
 type HealthCheckResponse struct {
-	Status HealthCheckResponse_ServingStatus `protobuf:"varint,1,opt,name=status,enum=grpc.health.v1.HealthCheckResponse_ServingStatus" json:"status,omitempty"`
+	Status               HealthCheckResponse_ServingStatus `protobuf:"varint,1,opt,name=status,proto3,enum=grpc.health.v1.HealthCheckResponse_ServingStatus" json:"status,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}                          `json:"-"`
+	XXX_unrecognized     []byte                            `json:"-"`
+	XXX_sizecache        int32                             `json:"-"`
 }
 
-func (m *HealthCheckResponse) Reset()                    { *m = HealthCheckResponse{} }
-func (m *HealthCheckResponse) String() string            { return proto.CompactTextString(m) }
-func (*HealthCheckResponse) ProtoMessage()               {}
-func (*HealthCheckResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
+func (m *HealthCheckResponse) Reset()         { *m = HealthCheckResponse{} }
+func (m *HealthCheckResponse) String() string { return proto.CompactTextString(m) }
+func (*HealthCheckResponse) ProtoMessage()    {}
+func (*HealthCheckResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_health_85731b6c49265086, []int{1}
+}
+func (m *HealthCheckResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_HealthCheckResponse.Unmarshal(m, b)
+}
+func (m *HealthCheckResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_HealthCheckResponse.Marshal(b, m, deterministic)
+}
+func (dst *HealthCheckResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_HealthCheckResponse.Merge(dst, src)
+}
+func (m *HealthCheckResponse) XXX_Size() int {
+	return xxx_messageInfo_HealthCheckResponse.Size(m)
+}
+func (m *HealthCheckResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_HealthCheckResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_HealthCheckResponse proto.InternalMessageInfo
 
 func (m *HealthCheckResponse) GetStatus() HealthCheckResponse_ServingStatus {
 	if m != nil {
@@ -105,8 +139,9 @@ var _ grpc.ClientConn
 // is compatible with the grpc package it is being compiled against.
 const _ = grpc.SupportPackageIsVersion4
 
-// Client API for Health service
-
+// HealthClient is the client API for Health service.
+//
+// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
 type HealthClient interface {
 	Check(ctx context.Context, in *HealthCheckRequest, opts ...grpc.CallOption) (*HealthCheckResponse, error)
 }
@@ -121,15 +156,14 @@ func NewHealthClient(cc *grpc.ClientConn) HealthClient {
 
 func (c *healthClient) Check(ctx context.Context, in *HealthCheckRequest, opts ...grpc.CallOption) (*HealthCheckResponse, error) {
 	out := new(HealthCheckResponse)
-	err := grpc.Invoke(ctx, "/grpc.health.v1.Health/Check", in, out, c.cc, opts...)
+	err := c.cc.Invoke(ctx, "/grpc.health.v1.Health/Check", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
 	return out, nil
 }
 
-// Server API for Health service
-
+// HealthServer is the server API for Health service.
 type HealthServer interface {
 	Check(context.Context, *HealthCheckRequest) (*HealthCheckResponse, error)
 }
@@ -166,25 +200,28 @@ var _Health_serviceDesc = grpc.ServiceDesc{
 		},
 	},
 	Streams:  []grpc.StreamDesc{},
-	Metadata: "grpc_health_v1/health.proto",
+	Metadata: "grpc/health/v1/health.proto",
 }
 
-func init() { proto.RegisterFile("grpc_health_v1/health.proto", fileDescriptor0) }
+func init() { proto.RegisterFile("grpc/health/v1/health.proto", fileDescriptor_health_85731b6c49265086) }
 
-var fileDescriptor0 = []byte{
-	// 213 bytes of a gzipped FileDescriptorProto
+var fileDescriptor_health_85731b6c49265086 = []byte{
+	// 271 bytes of a gzipped FileDescriptorProto
 	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0x92, 0x4e, 0x2f, 0x2a, 0x48,
-	0x8e, 0xcf, 0x48, 0x4d, 0xcc, 0x29, 0xc9, 0x88, 0x2f, 0x33, 0xd4, 0x87, 0xb0, 0xf4, 0x0a, 0x8a,
-	0xf2, 0x4b, 0xf2, 0x85, 0xf8, 0x40, 0x92, 0x7a, 0x50, 0xa1, 0x32, 0x43, 0x25, 0x3d, 0x2e, 0x21,
-	0x0f, 0x30, 0xc7, 0x39, 0x23, 0x35, 0x39, 0x3b, 0x28, 0xb5, 0xb0, 0x34, 0xb5, 0xb8, 0x44, 0x48,
-	0x82, 0x8b, 0xbd, 0x38, 0xb5, 0xa8, 0x2c, 0x33, 0x39, 0x55, 0x82, 0x51, 0x81, 0x51, 0x83, 0x33,
-	0x08, 0xc6, 0x55, 0x9a, 0xc3, 0xc8, 0x25, 0x8c, 0xa2, 0xa1, 0xb8, 0x20, 0x3f, 0xaf, 0x38, 0x55,
-	0xc8, 0x93, 0x8b, 0xad, 0xb8, 0x24, 0xb1, 0xa4, 0xb4, 0x18, 0xac, 0x81, 0xcf, 0xc8, 0x50, 0x0f,
-	0xd5, 0x22, 0x3d, 0x2c, 0x9a, 0xf4, 0x82, 0x41, 0x86, 0xe6, 0xa5, 0x07, 0x83, 0x35, 0x06, 0x41,
-	0x0d, 0x50, 0xb2, 0xe2, 0xe2, 0x45, 0x91, 0x10, 0xe2, 0xe6, 0x62, 0x0f, 0xf5, 0xf3, 0xf6, 0xf3,
-	0x0f, 0xf7, 0x13, 0x60, 0x00, 0x71, 0x82, 0x5d, 0x83, 0xc2, 0x3c, 0xfd, 0xdc, 0x05, 0x18, 0x85,
-	0xf8, 0xb9, 0xb8, 0xfd, 0xfc, 0x43, 0xe2, 0x61, 0x02, 0x4c, 0x46, 0x51, 0x5c, 0x6c, 0x10, 0x8b,
-	0x84, 0x02, 0xb8, 0x58, 0xc1, 0x96, 0x09, 0x29, 0xe1, 0x75, 0x09, 0xd8, 0xbf, 0x52, 0xca, 0x44,
-	0xb8, 0x36, 0x89, 0x0d, 0x1c, 0x82, 0xc6, 0x80, 0x00, 0x00, 0x00, 0xff, 0xff, 0x53, 0x2b, 0x65,
-	0x20, 0x60, 0x01, 0x00, 0x00,
+	0xd6, 0xcf, 0x48, 0x4d, 0xcc, 0x29, 0xc9, 0xd0, 0x2f, 0x33, 0x84, 0xb2, 0xf4, 0x0a, 0x8a, 0xf2,
+	0x4b, 0xf2, 0x85, 0xf8, 0x40, 0x92, 0x7a, 0x50, 0xa1, 0x32, 0x43, 0x25, 0x3d, 0x2e, 0x21, 0x0f,
+	0x30, 0xc7, 0x39, 0x23, 0x35, 0x39, 0x3b, 0x28, 0xb5, 0xb0, 0x34, 0xb5, 0xb8, 0x44, 0x48, 0x82,
+	0x8b, 0xbd, 0x38, 0xb5, 0xa8, 0x2c, 0x33, 0x39, 0x55, 0x82, 0x51, 0x81, 0x51, 0x83, 0x33, 0x08,
+	0xc6, 0x55, 0x9a, 0xc3, 0xc8, 0x25, 0x8c, 0xa2, 0xa1, 0xb8, 0x20, 0x3f, 0xaf, 0x38, 0x55, 0xc8,
+	0x93, 0x8b, 0xad, 0xb8, 0x24, 0xb1, 0xa4, 0xb4, 0x18, 0xac, 0x81, 0xcf, 0xc8, 0x50, 0x0f, 0xd5,
+	0x22, 0x3d, 0x2c, 0x9a, 0xf4, 0x82, 0x41, 0x86, 0xe6, 0xa5, 0x07, 0x83, 0x35, 0x06, 0x41, 0x0d,
+	0x50, 0xb2, 0xe2, 0xe2, 0x45, 0x91, 0x10, 0xe2, 0xe6, 0x62, 0x0f, 0xf5, 0xf3, 0xf6, 0xf3, 0x0f,
+	0xf7, 0x13, 0x60, 0x00, 0x71, 0x82, 0x5d, 0x83, 0xc2, 0x3c, 0xfd, 0xdc, 0x05, 0x18, 0x85, 0xf8,
+	0xb9, 0xb8, 0xfd, 0xfc, 0x43, 0xe2, 0x61, 0x02, 0x4c, 0x46, 0x51, 0x5c, 0x6c, 0x10, 0x8b, 0x84,
+	0x02, 0xb8, 0x58, 0xc1, 0x96, 0x09, 0x29, 0xe1, 0x75, 0x09, 0xd8, 0xbf, 0x52, 0xca, 0x44, 0xb8,
+	0xd6, 0x29, 0x91, 0x4b, 0x30, 0x33, 0x1f, 0x4d, 0xa1, 0x13, 0x37, 0x44, 0x65, 0x00, 0x28, 0x70,
+	0x03, 0x18, 0xa3, 0x74, 0xd2, 0xf3, 0xf3, 0xd3, 0x73, 0x52, 0xf5, 0xd2, 0xf3, 0x73, 0x12, 0xf3,
+	0xd2, 0xf5, 0xf2, 0x8b, 0xd2, 0xf5, 0x91, 0x63, 0x03, 0xc4, 0x8e, 0x87, 0xb0, 0xe3, 0xcb, 0x0c,
+	0x57, 0x31, 0xf1, 0xb9, 0x83, 0x4c, 0x83, 0x18, 0xa1, 0x17, 0x66, 0x98, 0xc4, 0x06, 0x8e, 0x24,
+	0x63, 0x40, 0x00, 0x00, 0x00, 0xff, 0xff, 0xec, 0x66, 0x81, 0xcb, 0xc3, 0x01, 0x00, 0x00,
 }

vendor/google.golang.org/grpc/health/grpc_health_v1/health.proto

-// Copyright 2017 gRPC 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.
-
-syntax = "proto3";
-
-package grpc.health.v1;
-
-message HealthCheckRequest {
-  string service = 1;
-}
-
-message HealthCheckResponse {
-  enum ServingStatus {
- 	UNKNOWN = 0;
-	SERVING = 1;
-	NOT_SERVING = 2;
-  }
-  ServingStatus status = 1;
-}
-
-service Health{
-  rpc Check(HealthCheckRequest) returns (HealthCheckResponse);
-} 

vendor/google.golang.org/grpc/health/health.go

@@ -16,7 +16,7 @@
  *
  */
 
-//go:generate protoc --go_out=plugins=grpc:. grpc_health_v1/health.proto
+//go:generate ./regenerate.sh
 
 // Package health provides some utility functions to health-check a server. The implementation
 // is based on protobuf. Users need to write their own implementations if other IDLs are used.
@@ -26,9 +26,9 @@ import (
 	"sync"
 
 	"golang.org/x/net/context"
-	"google.golang.org/grpc"
 	"google.golang.org/grpc/codes"
 	healthpb "google.golang.org/grpc/health/grpc_health_v1"
+	"google.golang.org/grpc/status"
 )
 
 // Server implements `service Health`.
@@ -60,7 +60,7 @@ func (s *Server) Check(ctx context.Context, in *healthpb.HealthCheckRequest) (*h
 			Status: status,
 		}, nil
 	}
-	return nil, grpc.Errorf(codes.NotFound, "unknown service")
+	return nil, status.Error(codes.NotFound, "unknown service")
 }
 
 // SetServingStatus is called when need to reset the serving status of a service

vendor/google.golang.org/grpc/health/regenerate.sh

+#!/bin/bash
+# Copyright 2018 gRPC 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.
+
+set -eux -o pipefail
+
+TMP=$(mktemp -d)
+
+function finish {
+  rm -rf "$TMP"
+}
+trap finish EXIT
+
+pushd "$TMP"
+mkdir -p grpc/health/v1
+curl https://raw.githubusercontent.com/grpc/grpc-proto/master/grpc/health/v1/health.proto > grpc/health/v1/health.proto
+
+protoc --go_out=plugins=grpc,paths=source_relative:. -I. grpc/health/v1/*.proto
+popd
+rm -f grpc_health_v1/*.pb.go
+cp "$TMP"/grpc/health/v1/*.pb.go grpc_health_v1/
+

vendor/google.golang.org/grpc/interceptor.go

@@ -48,7 +48,9 @@ type UnaryServerInfo struct {
 }
 
 // UnaryHandler defines the handler invoked by UnaryServerInterceptor to complete the normal
-// execution of a unary RPC.
+// execution of a unary RPC. If a UnaryHandler returns an error, it should be produced by the
+// status package, or else gRPC will use codes.Unknown as the status code and err.Error() as
+// the status message of the RPC.
 type UnaryHandler func(ctx context.Context, req interface{}) (interface{}, error)
 
 // UnaryServerInterceptor provides a hook to intercept the execution of a unary RPC on the server. info

vendor/google.golang.org/grpc/internal/BUILD

@@ -17,7 +17,12 @@ filegroup(
 
 filegroup(
     name = "all-srcs",
-    srcs = [":package-srcs"],
+    srcs = [
+        ":package-srcs",
+        "//vendor/google.golang.org/grpc/internal/backoff:all-srcs",
+        "//vendor/google.golang.org/grpc/internal/channelz:all-srcs",
+        "//vendor/google.golang.org/grpc/internal/grpcrand:all-srcs",
+    ],
     tags = ["automanaged"],
     visibility = ["//visibility:public"],
 )

vendor/google.golang.org/grpc/internal/backoff/BUILD

+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = ["backoff.go"],
+    importmap = "k8s.io/kubernetes/vendor/google.golang.org/grpc/internal/backoff",
+    importpath = "google.golang.org/grpc/internal/backoff",
+    visibility = ["//vendor/google.golang.org/grpc:__subpackages__"],
+    deps = ["//vendor/google.golang.org/grpc/internal/grpcrand:go_default_library"],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+)

vendor/google.golang.org/grpc/internal/backoff/backoff.go

+/*
+ *
+ * Copyright 2017 gRPC 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 backoff implement the backoff strategy for gRPC.
+//
+// This is kept in internal until the gRPC project decides whether or not to
+// allow alternative backoff strategies.
+package backoff
+
+import (
+	"time"
+
+	"google.golang.org/grpc/internal/grpcrand"
+)
+
+// Strategy defines the methodology for backing off after a grpc connection
+// failure.
+//
+type Strategy interface {
+	// Backoff returns the amount of time to wait before the next retry given
+	// the number of consecutive failures.
+	Backoff(retries int) time.Duration
+}
+
+const (
+	// baseDelay is the amount of time to wait before retrying after the first
+	// failure.
+	baseDelay = 1.0 * time.Second
+	// factor is applied to the backoff after each retry.
+	factor = 1.6
+	// jitter provides a range to randomize backoff delays.
+	jitter = 0.2
+)
+
+// Exponential implements exponential backoff algorithm as defined in
+// https://github.com/grpc/grpc/blob/master/doc/connection-backoff.md.
+type Exponential struct {
+	// MaxDelay is the upper bound of backoff delay.
+	MaxDelay time.Duration
+}
+
+// Backoff returns the amount of time to wait before the next retry given the
+// number of retries.
+func (bc Exponential) Backoff(retries int) time.Duration {
+	if retries == 0 {
+		return baseDelay
+	}
+	backoff, max := float64(baseDelay), float64(bc.MaxDelay)
+	for backoff < max && retries > 0 {
+		backoff *= factor
+		retries--
+	}
+	if backoff > max {
+		backoff = max
+	}
+	// Randomize backoff delays so that if a cluster of requests start at
+	// the same time, they won't operate in lockstep.
+	backoff *= 1 + jitter*(grpcrand.Float64()*2-1)
+	if backoff < 0 {
+		return 0
+	}
+	return time.Duration(backoff)
+}

vendor/google.golang.org/grpc/internal/channelz/BUILD

+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "funcs.go",
+        "types.go",
+    ],
+    importmap = "k8s.io/kubernetes/vendor/google.golang.org/grpc/internal/channelz",
+    importpath = "google.golang.org/grpc/internal/channelz",
+    visibility = ["//vendor/google.golang.org/grpc:__subpackages__"],
+    deps = [
+        "//vendor/google.golang.org/grpc/connectivity:go_default_library",
+        "//vendor/google.golang.org/grpc/grpclog:go_default_library",
+    ],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+)

vendor/google.golang.org/grpc/internal/grpcrand/BUILD

+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = ["grpcrand.go"],
+    importmap = "k8s.io/kubernetes/vendor/google.golang.org/grpc/internal/grpcrand",
+    importpath = "google.golang.org/grpc/internal/grpcrand",
+    visibility = ["//vendor/google.golang.org/grpc:__subpackages__"],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+)

vendor/google.golang.org/grpc/internal/grpcrand/grpcrand.go

+/*
+ *
+ * Copyright 2018 gRPC 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 grpcrand implements math/rand functions in a concurrent-safe way
+// with a global random source, independent of math/rand's global source.
+package grpcrand
+
+import (
+	"math/rand"
+	"sync"
+	"time"
+)
+
+var (
+	r  = rand.New(rand.NewSource(time.Now().UnixNano()))
+	mu sync.Mutex
+)
+
+// Int63n implements rand.Int63n on the grpcrand global source.
+func Int63n(n int64) int64 {
+	mu.Lock()
+	res := r.Int63n(n)
+	mu.Unlock()
+	return res
+}
+
+// Intn implements rand.Intn on the grpcrand global source.
+func Intn(n int) int {
+	mu.Lock()
+	res := r.Intn(n)
+	mu.Unlock()
+	return res
+}
+
+// Float64 implements rand.Float64 on the grpcrand global source.
+func Float64() float64 {
+	mu.Lock()
+	res := r.Float64()
+	mu.Unlock()
+	return res
+}

vendor/google.golang.org/grpc/internal/internal.go

@@ -15,20 +15,22 @@
  *
  */
 
-// Package internal contains gRPC-internal code for testing, to avoid polluting
-// the godoc of the top-level grpc package.
+// Package internal contains gRPC-internal code, to avoid polluting
+// the godoc of the top-level grpc package.  It must not import any grpc
+// symbols to avoid circular dependencies.
 package internal
 
-// TestingCloseConns closes all existing transports but keeps
-// grpcServer.lis accepting new connections.
-//
-// The provided grpcServer must be of type *grpc.Server. It is untyped
-// for circular dependency reasons.
-var TestingCloseConns func(grpcServer interface{})
+var (
 
-// TestingUseHandlerImpl enables the http.Handler-based server implementation.
-// It must be called before Serve and requires TLS credentials.
-//
-// The provided grpcServer must be of type *grpc.Server. It is untyped
-// for circular dependency reasons.
-var TestingUseHandlerImpl func(grpcServer interface{})
+	// TestingUseHandlerImpl enables the http.Handler-based server implementation.
+	// It must be called before Serve and requires TLS credentials.
+	//
+	// The provided grpcServer must be of type *grpc.Server. It is untyped
+	// for circular dependency reasons.
+	TestingUseHandlerImpl func(grpcServer interface{})
+
+	// WithContextDialer is exported by clientconn.go
+	WithContextDialer interface{} // func(context.Context, string) (net.Conn, error) grpc.DialOption
+	// WithResolverBuilder is exported by clientconn.go
+	WithResolverBuilder interface{} // func (resolver.Builder) grpc.DialOption
+)

vendor/google.golang.org/grpc/metadata/metadata.go

@@ -17,7 +17,8 @@
  */
 
 // Package metadata define the structure of the metadata supported by gRPC library.
-// Please refer to https://grpc.io/docs/guides/wire.html for more information about custom-metadata.
+// Please refer to https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md
+// for more information about custom-metadata.
 package metadata
 
 import (
@@ -27,7 +28,9 @@ import (
 	"golang.org/x/net/context"
 )
 
-// DecodeKeyValue returns k, v, nil.  It is deprecated and should not be used.
+// DecodeKeyValue returns k, v, nil.
+//
+// Deprecated: use k and v directly instead.
 func DecodeKeyValue(k, v string) (string, string, error) {
 	return k, v, nil
 }
@@ -94,6 +97,30 @@ func (md MD) Copy() MD {
 	return Join(md)
 }
 
+// Get obtains the values for a given key.
+func (md MD) Get(k string) []string {
+	k = strings.ToLower(k)
+	return md[k]
+}
+
+// Set sets the value of a given key with a slice of values.
+func (md MD) Set(k string, vals ...string) {
+	if len(vals) == 0 {
+		return
+	}
+	k = strings.ToLower(k)
+	md[k] = vals
+}
+
+// Append adds the values to key k, not overwriting what was already stored at that key.
+func (md MD) Append(k string, vals ...string) {
+	if len(vals) == 0 {
+		return
+	}
+	k = strings.ToLower(k)
+	md[k] = append(md[k], vals...)
+}
+
 // Join joins any number of mds into a single MD.
 // The order of values for each key is determined by the order in which
 // the mds containing those values are presented to Join.
@@ -115,9 +142,26 @@ func NewIncomingContext(ctx context.Context, md MD) context.Context {
 	return context.WithValue(ctx, mdIncomingKey{}, md)
 }
 
-// NewOutgoingContext creates a new context with outgoing md attached.
+// NewOutgoingContext creates a new context with outgoing md attached. If used
+// in conjunction with AppendToOutgoingContext, NewOutgoingContext will
+// overwrite any previously-appended metadata.
 func NewOutgoingContext(ctx context.Context, md MD) context.Context {
-	return context.WithValue(ctx, mdOutgoingKey{}, md)
+	return context.WithValue(ctx, mdOutgoingKey{}, rawMD{md: md})
+}
+
+// AppendToOutgoingContext returns a new context with the provided kv merged
+// with any existing metadata in the context. Please refer to the
+// documentation of Pairs for a description of kv.
+func AppendToOutgoingContext(ctx context.Context, kv ...string) context.Context {
+	if len(kv)%2 == 1 {
+		panic(fmt.Sprintf("metadata: AppendToOutgoingContext got an odd number of input pairs for metadata: %d", len(kv)))
+	}
+	md, _ := ctx.Value(mdOutgoingKey{}).(rawMD)
+	added := make([][]string, len(md.added)+1)
+	copy(added, md.added)
+	added[len(added)-1] = make([]string, len(kv))
+	copy(added[len(added)-1], kv)
+	return context.WithValue(ctx, mdOutgoingKey{}, rawMD{md: md.md, added: added})
 }
 
 // FromIncomingContext returns the incoming metadata in ctx if it exists.  The
@@ -128,10 +172,39 @@ func FromIncomingContext(ctx context.Context) (md MD, ok bool) {
 	return
 }
 
+// FromOutgoingContextRaw returns the un-merged, intermediary contents
+// of rawMD. Remember to perform strings.ToLower on the keys. The returned
+// MD should not be modified. Writing to it may cause races. Modification
+// should be made to copies of the returned MD.
+//
+// This is intended for gRPC-internal use ONLY.
+func FromOutgoingContextRaw(ctx context.Context) (MD, [][]string, bool) {
+	raw, ok := ctx.Value(mdOutgoingKey{}).(rawMD)
+	if !ok {
+		return nil, nil, false
+	}
+
+	return raw.md, raw.added, true
+}
+
 // FromOutgoingContext returns the outgoing metadata in ctx if it exists.  The
 // returned MD should not be modified. Writing to it may cause races.
-// Modification should be made to the copies of the returned MD.
-func FromOutgoingContext(ctx context.Context) (md MD, ok bool) {
-	md, ok = ctx.Value(mdOutgoingKey{}).(MD)
-	return
+// Modification should be made to copies of the returned MD.
+func FromOutgoingContext(ctx context.Context) (MD, bool) {
+	raw, ok := ctx.Value(mdOutgoingKey{}).(rawMD)
+	if !ok {
+		return nil, false
+	}
+
+	mds := make([]MD, 0, len(raw.added)+1)
+	mds = append(mds, raw.md)
+	for _, vv := range raw.added {
+		mds = append(mds, Pairs(vv...))
+	}
+	return Join(mds...), ok
+}
+
+type rawMD struct {
+	md    MD
+	added [][]string
 }

vendor/google.golang.org/grpc/naming/dns_resolver.go

@@ -153,10 +153,10 @@ type ipWatcher struct {
 	updateChan chan *Update
 }
 
-// Next returns the adrress resolution Update for the target. For IP address,
-// the resolution is itself, thus polling name server is unncessary. Therefore,
+// Next returns the address resolution Update for the target. For IP address,
+// the resolution is itself, thus polling name server is unnecessary. Therefore,
 // Next() will return an Update the first time it is called, and will be blocked
-// for all following calls as no Update exisits until watcher is closed.
+// for all following calls as no Update exists until watcher is closed.
 func (i *ipWatcher) Next() ([]*Update, error) {
 	u, ok := <-i.updateChan
 	if !ok {

vendor/google.golang.org/grpc/naming/go17.go

-// +build go1.7, !go1.8
+// +build go1.6,!go1.8
 
 /*
  *

vendor/google.golang.org/grpc/naming/naming.go

@@ -18,20 +18,26 @@
 
 // Package naming defines the naming API and related data structures for gRPC.
 // The interface is EXPERIMENTAL and may be suject to change.
+//
+// Deprecated: please use package resolver.
 package naming
 
 // Operation defines the corresponding operations for a name resolution change.
+//
+// Deprecated: please use package resolver.
 type Operation uint8
 
 const (
 	// Add indicates a new address is added.
 	Add Operation = iota
-	// Delete indicates an exisiting address is deleted.
+	// Delete indicates an existing address is deleted.
 	Delete
 )
 
 // Update defines a name resolution update. Notice that it is not valid having both
 // empty string Addr and nil Metadata in an Update.
+//
+// Deprecated: please use package resolver.
 type Update struct {
 	// Op indicates the operation of the update.
 	Op Operation
@@ -43,12 +49,16 @@ type Update struct {
 }
 
 // Resolver creates a Watcher for a target to track its resolution changes.
+//
+// Deprecated: please use package resolver.
 type Resolver interface {
 	// Resolve creates a Watcher for target.
 	Resolve(target string) (Watcher, error)
 }
 
 // Watcher watches for the updates on the specified target.
+//
+// Deprecated: please use package resolver.
 type Watcher interface {
 	// Next blocks until an update or error happens. It may return one or more
 	// updates. The first call should get the full set of the results. It should

vendor/google.golang.org/grpc/picker_wrapper.go

@@ -19,12 +19,17 @@
 package grpc
 
 import (
+	"io"
 	"sync"
+	"sync/atomic"
 
 	"golang.org/x/net/context"
 	"google.golang.org/grpc/balancer"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/grpclog"
+	"google.golang.org/grpc/internal/channelz"
+	"google.golang.org/grpc/metadata"
+	"google.golang.org/grpc/resolver"
 	"google.golang.org/grpc/status"
 	"google.golang.org/grpc/transport"
 )
@@ -36,13 +41,57 @@ type pickerWrapper struct {
 	done       bool
 	blockingCh chan struct{}
 	picker     balancer.Picker
+
+	// The latest connection happened.
+	connErrMu sync.Mutex
+	connErr   error
+
+	stickinessMDKey atomic.Value
+	stickiness      *stickyStore
 }
 
 func newPickerWrapper() *pickerWrapper {
-	bp := &pickerWrapper{blockingCh: make(chan struct{})}
+	bp := &pickerWrapper{
+		blockingCh: make(chan struct{}),
+		stickiness: newStickyStore(),
+	}
 	return bp
 }
 
+func (bp *pickerWrapper) updateConnectionError(err error) {
+	bp.connErrMu.Lock()
+	bp.connErr = err
+	bp.connErrMu.Unlock()
+}
+
+func (bp *pickerWrapper) connectionError() error {
+	bp.connErrMu.Lock()
+	err := bp.connErr
+	bp.connErrMu.Unlock()
+	return err
+}
+
+func (bp *pickerWrapper) updateStickinessMDKey(newKey string) {
+	// No need to check ok because mdKey == "" if ok == false.
+	if oldKey, _ := bp.stickinessMDKey.Load().(string); oldKey != newKey {
+		bp.stickinessMDKey.Store(newKey)
+		bp.stickiness.reset(newKey)
+	}
+}
+
+func (bp *pickerWrapper) getStickinessMDKey() string {
+	// No need to check ok because mdKey == "" if ok == false.
+	mdKey, _ := bp.stickinessMDKey.Load().(string)
+	return mdKey
+}
+
+func (bp *pickerWrapper) clearStickinessState() {
+	if oldKey := bp.getStickinessMDKey(); oldKey != "" {
+		// There's no need to reset store if mdKey was "".
+		bp.stickiness.reset(oldKey)
+	}
+}
+
 // updatePicker is called by UpdateBalancerState. It unblocks all blocked pick.
 func (bp *pickerWrapper) updatePicker(p balancer.Picker) {
 	bp.mu.Lock()
@@ -57,6 +106,23 @@ func (bp *pickerWrapper) updatePicker(p balancer.Picker) {
 	bp.mu.Unlock()
 }
 
+func doneChannelzWrapper(acw *acBalancerWrapper, done func(balancer.DoneInfo)) func(balancer.DoneInfo) {
+	acw.mu.Lock()
+	ac := acw.ac
+	acw.mu.Unlock()
+	ac.incrCallsStarted()
+	return func(b balancer.DoneInfo) {
+		if b.Err != nil && b.Err != io.EOF {
+			ac.incrCallsFailed()
+		} else {
+			ac.incrCallsSucceeded()
+		}
+		if done != nil {
+			done(b)
+		}
+	}
+}
+
 // pick returns the transport that will be used for the RPC.
 // It may block in the following cases:
 // - there's no picker
@@ -65,6 +131,27 @@ func (bp *pickerWrapper) updatePicker(p balancer.Picker) {
 // - the subConn returned by the current picker is not READY
 // When one of these situations happens, pick blocks until the picker gets updated.
 func (bp *pickerWrapper) pick(ctx context.Context, failfast bool, opts balancer.PickOptions) (transport.ClientTransport, func(balancer.DoneInfo), error) {
+
+	mdKey := bp.getStickinessMDKey()
+	stickyKey, isSticky := stickyKeyFromContext(ctx, mdKey)
+
+	// Potential race here: if stickinessMDKey is updated after the above two
+	// lines, and this pick is a sticky pick, the following put could add an
+	// entry to sticky store with an outdated sticky key.
+	//
+	// The solution: keep the current md key in sticky store, and at the
+	// beginning of each get/put, check the mdkey against store.curMDKey.
+	//  - Cons: one more string comparing for each get/put.
+	//  - Pros: the string matching happens inside get/put, so the overhead for
+	//  non-sticky RPCs will be minimal.
+
+	if isSticky {
+		if t, ok := bp.stickiness.get(mdKey, stickyKey); ok {
+			// Done function returned is always nil.
+			return t, nil, nil
+		}
+	}
+
 	var (
 		p  balancer.Picker
 		ch chan struct{}
@@ -97,7 +184,7 @@ func (bp *pickerWrapper) pick(ctx context.Context, failfast bool, opts balancer.
 		p = bp.picker
 		bp.mu.Unlock()
 
-		subConn, put, err := p.Pick(ctx, opts)
+		subConn, done, err := p.Pick(ctx, opts)
 
 		if err != nil {
 			switch err {
@@ -107,7 +194,7 @@ func (bp *pickerWrapper) pick(ctx context.Context, failfast bool, opts balancer.
 				if !failfast {
 					continue
 				}
-				return nil, nil, status.Errorf(codes.Unavailable, "%v", err)
+				return nil, nil, status.Errorf(codes.Unavailable, "%v, latest connection error: %v", err, bp.connectionError())
 			default:
 				// err is some other error.
 				return nil, nil, toRPCErr(err)
@@ -120,7 +207,13 @@ func (bp *pickerWrapper) pick(ctx context.Context, failfast bool, opts balancer.
 			continue
 		}
 		if t, ok := acw.getAddrConn().getReadyTransport(); ok {
-			return t, put, nil
+			if isSticky {
+				bp.stickiness.put(mdKey, stickyKey, acw)
+			}
+			if channelz.IsOn() {
+				return t, doneChannelzWrapper(acw, done), nil
+			}
+			return t, done, nil
 		}
 		grpclog.Infof("blockingPicker: the picked transport is not ready, loop back to repick")
 		// If ok == false, ac.state is not READY.
@@ -139,3 +232,105 @@ func (bp *pickerWrapper) close() {
 	bp.done = true
 	close(bp.blockingCh)
 }
+
+const stickinessKeyCountLimit = 1000
+
+type stickyStoreEntry struct {
+	acw  *acBalancerWrapper
+	addr resolver.Address
+}
+
+type stickyStore struct {
+	mu sync.Mutex
+	// curMDKey is check before every get/put to avoid races. The operation will
+	// abort immediately when the given mdKey is different from the curMDKey.
+	curMDKey string
+	store    *linkedMap
+}
+
+func newStickyStore() *stickyStore {
+	return &stickyStore{
+		store: newLinkedMap(),
+	}
+}
+
+// reset clears the map in stickyStore, and set the currentMDKey to newMDKey.
+func (ss *stickyStore) reset(newMDKey string) {
+	ss.mu.Lock()
+	ss.curMDKey = newMDKey
+	ss.store.clear()
+	ss.mu.Unlock()
+}
+
+// stickyKey is the key to look up in store. mdKey will be checked against
+// curMDKey to avoid races.
+func (ss *stickyStore) put(mdKey, stickyKey string, acw *acBalancerWrapper) {
+	ss.mu.Lock()
+	defer ss.mu.Unlock()
+	if mdKey != ss.curMDKey {
+		return
+	}
+	// TODO(stickiness): limit the total number of entries.
+	ss.store.put(stickyKey, &stickyStoreEntry{
+		acw:  acw,
+		addr: acw.getAddrConn().getCurAddr(),
+	})
+	if ss.store.len() > stickinessKeyCountLimit {
+		ss.store.removeOldest()
+	}
+}
+
+// stickyKey is the key to look up in store. mdKey will be checked against
+// curMDKey to avoid races.
+func (ss *stickyStore) get(mdKey, stickyKey string) (transport.ClientTransport, bool) {
+	ss.mu.Lock()
+	defer ss.mu.Unlock()
+	if mdKey != ss.curMDKey {
+		return nil, false
+	}
+	entry, ok := ss.store.get(stickyKey)
+	if !ok {
+		return nil, false
+	}
+	ac := entry.acw.getAddrConn()
+	if ac.getCurAddr() != entry.addr {
+		ss.store.remove(stickyKey)
+		return nil, false
+	}
+	t, ok := ac.getReadyTransport()
+	if !ok {
+		ss.store.remove(stickyKey)
+		return nil, false
+	}
+	return t, true
+}
+
+// Get one value from metadata in ctx with key stickinessMDKey.
+//
+// It returns "", false if stickinessMDKey is an empty string.
+func stickyKeyFromContext(ctx context.Context, stickinessMDKey string) (string, bool) {
+	if stickinessMDKey == "" {
+		return "", false
+	}
+
+	md, added, ok := metadata.FromOutgoingContextRaw(ctx)
+	if !ok {
+		return "", false
+	}
+
+	if vv, ok := md[stickinessMDKey]; ok {
+		if len(vv) > 0 {
+			return vv[0], true
+		}
+	}
+
+	for _, ss := range added {
+		for i := 0; i < len(ss)-1; i += 2 {
+			if ss[i] == stickinessMDKey {
+				return ss[i+1], true
+			}
+		}
+	}
+
+	return "", false
+}