vendor: upgrade grpc to v1.7.2

Signed-off-by: Gyu-Ho Lee <gyuhox@gmail.com>

cmd/vendor/google.golang.org/grpc/rpc_util.go

@@ -21,10 +21,12 @@ package grpc
 import (
 	"bytes"
 	"compress/gzip"
+	stdctx "context"
 	"encoding/binary"
 	"io"
 	"io/ioutil"
 	"math"
+	"os"
 	"sync"
 	"time"
 
@@ -132,7 +134,9 @@ type callInfo struct {
 	creds                 credentials.PerRPCCredentials
 }
 
-var defaultCallInfo = callInfo{failFast: true}
+func defaultCallInfo() *callInfo {
+	return &callInfo{failFast: true}
+}
 
 // CallOption configures a Call before it starts or extracts information from
 // a Call after it completes.
@@ -384,14 +388,15 @@ func recv(p *parser, c Codec, s *transport.Stream, dc Decompressor, m interface{
 }
 
 type rpcInfo struct {
+	failfast      bool
 	bytesSent     bool
 	bytesReceived bool
 }
 
 type rpcInfoContextKey struct{}
 
-func newContextWithRPCInfo(ctx context.Context) context.Context {
-	return context.WithValue(ctx, rpcInfoContextKey{}, &rpcInfo{})
+func newContextWithRPCInfo(ctx context.Context, failfast bool) context.Context {
+	return context.WithValue(ctx, rpcInfoContextKey{}, &rpcInfo{failfast: failfast})
 }
 
 func rpcInfoFromContext(ctx context.Context) (s *rpcInfo, ok bool) {
@@ -401,11 +406,63 @@ func rpcInfoFromContext(ctx context.Context) (s *rpcInfo, ok bool) {
 
 func updateRPCInfoInContext(ctx context.Context, s rpcInfo) {
 	if ss, ok := rpcInfoFromContext(ctx); ok {
-		*ss = s
+		ss.bytesReceived = s.bytesReceived
+		ss.bytesSent = s.bytesSent
 	}
 	return
 }
 
+// toRPCErr converts an error into an error from the status package.
+func toRPCErr(err error) error {
+	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, stdctx.DeadlineExceeded:
+			return status.Error(codes.DeadlineExceeded, err.Error())
+		case context.Canceled, stdctx.Canceled:
+			return status.Error(codes.Canceled, err.Error())
+		case ErrClientConnClosing:
+			return status.Error(codes.FailedPrecondition, err.Error())
+		}
+	}
+	return status.Error(codes.Unknown, err.Error())
+}
+
+// convertCode converts a standard Go error into its canonical code. Note that
+// this is only used to translate the error returned by the server applications.
+func convertCode(err error) codes.Code {
+	switch err {
+	case nil:
+		return codes.OK
+	case io.EOF:
+		return codes.OutOfRange
+	case io.ErrClosedPipe, io.ErrNoProgress, io.ErrShortBuffer, io.ErrShortWrite, io.ErrUnexpectedEOF:
+		return codes.FailedPrecondition
+	case os.ErrInvalid:
+		return codes.InvalidArgument
+	case context.Canceled, stdctx.Canceled:
+		return codes.Canceled
+	case context.DeadlineExceeded, stdctx.DeadlineExceeded:
+		return codes.DeadlineExceeded
+	}
+	switch {
+	case os.IsExist(err):
+		return codes.AlreadyExists
+	case os.IsNotExist(err):
+		return codes.NotFound
+	case os.IsPermission(err):
+		return codes.PermissionDenied
+	}
+	return codes.Unknown
+}
+
 // Code returns the error code for err if it was produced by the rpc system.
 // Otherwise, it returns codes.Unknown.
 //
@@ -452,7 +509,7 @@ type MethodConfig struct {
 	// MaxReqSize is the maximum allowed payload size for an individual request in a
 	// stream (client->server) in bytes. The size which is measured is the serialized
 	// payload after per-message compression (but before stream compression) in bytes.
-	// The actual value used is the minumum of the value specified here and the value set
+	// The actual value used is the minimum of the value specified here and the value set
 	// by the application via the gRPC client API. If either one is not set, then the other
 	// will be used.  If neither is set, then the built-in default is used.
 	MaxReqSize *int
@@ -497,7 +554,7 @@ func getMaxSize(mcMax, doptMax *int, defaultVal int) *int {
 
 // SupportPackageIsVersion3 is referenced from generated protocol buffer files.
 // The latest support package version is 4.
-// SupportPackageIsVersion3 is kept for compability. It will be removed in the
+// SupportPackageIsVersion3 is kept for compatibility. It will be removed in the
 // next support package version update.
 const SupportPackageIsVersion3 = true
 
@@ -510,6 +567,6 @@ const SupportPackageIsVersion3 = true
 const SupportPackageIsVersion4 = true
 
 // Version is the current grpc version.
-const Version = "1.6.0"
+const Version = "1.7.2"
 
 const grpcUA = "grpc-go/" + Version