This update cleans up the vendor directory and also keeps only
what is required in the Dockerfiles.  While these changes have
been tested locally and it works, the real test will be after a
merge, pulling down a new cloned version and running the build
again.

Change-Id: I589b5eddc6815108e6dfd40f773e6c3db8bf7bb9
diff --git a/vendor/google.golang.org/genproto/googleapis/rpc/status/status.pb.go b/vendor/google.golang.org/genproto/googleapis/rpc/status/status.pb.go
new file mode 100644
index 0000000..7bfe37a
--- /dev/null
+++ b/vendor/google.golang.org/genproto/googleapis/rpc/status/status.pb.go
@@ -0,0 +1,156 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// source: google/rpc/status.proto
+
+package status // import "google.golang.org/genproto/googleapis/rpc/status"
+
+import proto "github.com/golang/protobuf/proto"
+import fmt "fmt"
+import math "math"
+import any "github.com/golang/protobuf/ptypes/any"
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
+
+// The `Status` type defines a logical error model that is suitable for different
+// programming environments, including REST APIs and RPC APIs. It is used by
+// [gRPC](https://github.com/grpc). The error model is designed to be:
+//
+// - Simple to use and understand for most users
+// - Flexible enough to meet unexpected needs
+//
+// # Overview
+//
+// The `Status` message contains three pieces of data: error code, error message,
+// and error details. The error code should be an enum value of
+// [google.rpc.Code][google.rpc.Code], but it may accept additional error codes if needed.  The
+// error message should be a developer-facing English message that helps
+// developers *understand* and *resolve* the error. If a localized user-facing
+// error message is needed, put the localized message in the error details or
+// localize it in the client. The optional error details may contain arbitrary
+// information about the error. There is a predefined set of error detail types
+// in the package `google.rpc` that can be used for common error conditions.
+//
+// # Language mapping
+//
+// The `Status` message is the logical representation of the error model, but it
+// is not necessarily the actual wire format. When the `Status` message is
+// exposed in different client libraries and different wire protocols, it can be
+// mapped differently. For example, it will likely be mapped to some exceptions
+// in Java, but more likely mapped to some error codes in C.
+//
+// # Other uses
+//
+// The error model and the `Status` message can be used in a variety of
+// environments, either with or without APIs, to provide a
+// consistent developer experience across different environments.
+//
+// Example uses of this error model include:
+//
+// - Partial errors. If a service needs to return partial errors to the client,
+//     it may embed the `Status` in the normal response to indicate the partial
+//     errors.
+//
+// - Workflow errors. A typical workflow has multiple steps. Each step may
+//     have a `Status` message for error reporting.
+//
+// - Batch operations. If a client uses batch request and batch response, the
+//     `Status` message should be used directly inside batch response, one for
+//     each error sub-response.
+//
+// - Asynchronous operations. If an API call embeds asynchronous operation
+//     results in its response, the status of those operations should be
+//     represented directly using the `Status` message.
+//
+// - Logging. If some API errors are stored in logs, the message `Status` could
+//     be used directly after any stripping needed for security/privacy reasons.
+type Status struct {
+	// The status code, which should be an enum value of [google.rpc.Code][google.rpc.Code].
+	Code int32 `protobuf:"varint,1,opt,name=code,proto3" json:"code,omitempty"`
+	// A developer-facing error message, which should be in English. Any
+	// user-facing error message should be localized and sent in the
+	// [google.rpc.Status.details][google.rpc.Status.details] field, or localized by the client.
+	Message string `protobuf:"bytes,2,opt,name=message,proto3" json:"message,omitempty"`
+	// A list of messages that carry the error details.  There is a common set of
+	// message types for APIs to use.
+	Details              []*any.Any `protobuf:"bytes,3,rep,name=details,proto3" json:"details,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}   `json:"-"`
+	XXX_unrecognized     []byte     `json:"-"`
+	XXX_sizecache        int32      `json:"-"`
+}
+
+func (m *Status) Reset()         { *m = Status{} }
+func (m *Status) String() string { return proto.CompactTextString(m) }
+func (*Status) ProtoMessage()    {}
+func (*Status) Descriptor() ([]byte, []int) {
+	return fileDescriptor_status_c6e4de62dcdf2edf, []int{0}
+}
+func (m *Status) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Status.Unmarshal(m, b)
+}
+func (m *Status) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Status.Marshal(b, m, deterministic)
+}
+func (dst *Status) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Status.Merge(dst, src)
+}
+func (m *Status) XXX_Size() int {
+	return xxx_messageInfo_Status.Size(m)
+}
+func (m *Status) XXX_DiscardUnknown() {
+	xxx_messageInfo_Status.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Status proto.InternalMessageInfo
+
+func (m *Status) GetCode() int32 {
+	if m != nil {
+		return m.Code
+	}
+	return 0
+}
+
+func (m *Status) GetMessage() string {
+	if m != nil {
+		return m.Message
+	}
+	return ""
+}
+
+func (m *Status) GetDetails() []*any.Any {
+	if m != nil {
+		return m.Details
+	}
+	return nil
+}
+
+func init() {
+	proto.RegisterType((*Status)(nil), "google.rpc.Status")
+}
+
+func init() { proto.RegisterFile("google/rpc/status.proto", fileDescriptor_status_c6e4de62dcdf2edf) }
+
+var fileDescriptor_status_c6e4de62dcdf2edf = []byte{
+	// 209 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0x12, 0x4f, 0xcf, 0xcf, 0x4f,
+	0xcf, 0x49, 0xd5, 0x2f, 0x2a, 0x48, 0xd6, 0x2f, 0x2e, 0x49, 0x2c, 0x29, 0x2d, 0xd6, 0x2b, 0x28,
+	0xca, 0x2f, 0xc9, 0x17, 0xe2, 0x82, 0x48, 0xe8, 0x15, 0x15, 0x24, 0x4b, 0x49, 0x42, 0x15, 0x81,
+	0x65, 0x92, 0x4a, 0xd3, 0xf4, 0x13, 0xf3, 0x2a, 0x21, 0xca, 0x94, 0xd2, 0xb8, 0xd8, 0x82, 0xc1,
+	0xda, 0x84, 0x84, 0xb8, 0x58, 0x92, 0xf3, 0x53, 0x52, 0x25, 0x18, 0x15, 0x18, 0x35, 0x58, 0x83,
+	0xc0, 0x6c, 0x21, 0x09, 0x2e, 0xf6, 0xdc, 0xd4, 0xe2, 0xe2, 0xc4, 0xf4, 0x54, 0x09, 0x26, 0x05,
+	0x46, 0x0d, 0xce, 0x20, 0x18, 0x57, 0x48, 0x8f, 0x8b, 0x3d, 0x25, 0xb5, 0x24, 0x31, 0x33, 0xa7,
+	0x58, 0x82, 0x59, 0x81, 0x59, 0x83, 0xdb, 0x48, 0x44, 0x0f, 0x6a, 0x21, 0xcc, 0x12, 0x3d, 0xc7,
+	0xbc, 0xca, 0x20, 0x98, 0x22, 0xa7, 0x38, 0x2e, 0xbe, 0xe4, 0xfc, 0x5c, 0x3d, 0x84, 0xa3, 0x9c,
+	0xb8, 0x21, 0xf6, 0x06, 0x80, 0x94, 0x07, 0x30, 0x46, 0x99, 0x43, 0xa5, 0xd2, 0xf3, 0x73, 0x12,
+	0xf3, 0xd2, 0xf5, 0xf2, 0x8b, 0xd2, 0xf5, 0xd3, 0x53, 0xf3, 0xc0, 0x86, 0xe9, 0x43, 0xa4, 0x12,
+	0x0b, 0x32, 0x8b, 0x91, 0xfc, 0x69, 0x0d, 0xa1, 0x16, 0x31, 0x31, 0x07, 0x05, 0x38, 0x27, 0xb1,
+	0x81, 0x55, 0x1a, 0x03, 0x02, 0x00, 0x00, 0xff, 0xff, 0xa4, 0x53, 0xf0, 0x7c, 0x10, 0x01, 0x00,
+	0x00,
+}
diff --git a/vendor/google.golang.org/grpc/binarylog/grpc_binarylog_v1/binarylog.pb.go b/vendor/google.golang.org/grpc/binarylog/grpc_binarylog_v1/binarylog.pb.go
new file mode 100644
index 0000000..f393bb6
--- /dev/null
+++ b/vendor/google.golang.org/grpc/binarylog/grpc_binarylog_v1/binarylog.pb.go
@@ -0,0 +1,900 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// source: grpc/binarylog/grpc_binarylog_v1/binarylog.proto
+
+package grpc_binarylog_v1 // import "google.golang.org/grpc/binarylog/grpc_binarylog_v1"
+
+import proto "github.com/golang/protobuf/proto"
+import fmt "fmt"
+import math "math"
+import duration "github.com/golang/protobuf/ptypes/duration"
+import timestamp "github.com/golang/protobuf/ptypes/timestamp"
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
+
+// Enumerates the type of event
+// Note the terminology is different from the RPC semantics
+// definition, but the same meaning is expressed here.
+type GrpcLogEntry_EventType int32
+
+const (
+	GrpcLogEntry_EVENT_TYPE_UNKNOWN GrpcLogEntry_EventType = 0
+	// Header sent from client to server
+	GrpcLogEntry_EVENT_TYPE_CLIENT_HEADER GrpcLogEntry_EventType = 1
+	// Header sent from server to client
+	GrpcLogEntry_EVENT_TYPE_SERVER_HEADER GrpcLogEntry_EventType = 2
+	// Message sent from client to server
+	GrpcLogEntry_EVENT_TYPE_CLIENT_MESSAGE GrpcLogEntry_EventType = 3
+	// Message sent from server to client
+	GrpcLogEntry_EVENT_TYPE_SERVER_MESSAGE GrpcLogEntry_EventType = 4
+	// A signal that client is done sending
+	GrpcLogEntry_EVENT_TYPE_CLIENT_HALF_CLOSE GrpcLogEntry_EventType = 5
+	// Trailer indicates the end of the RPC.
+	// On client side, this event means a trailer was either received
+	// from the network or the gRPC library locally generated a status
+	// to inform the application about a failure.
+	// On server side, this event means the server application requested
+	// to send a trailer. Note: EVENT_TYPE_CANCEL may still arrive after
+	// this due to races on server side.
+	GrpcLogEntry_EVENT_TYPE_SERVER_TRAILER GrpcLogEntry_EventType = 6
+	// A signal that the RPC is cancelled. On client side, this
+	// indicates the client application requests a cancellation.
+	// On server side, this indicates that cancellation was detected.
+	// Note: This marks the end of the RPC. Events may arrive after
+	// this due to races. For example, on client side a trailer
+	// may arrive even though the application requested to cancel the RPC.
+	GrpcLogEntry_EVENT_TYPE_CANCEL GrpcLogEntry_EventType = 7
+)
+
+var GrpcLogEntry_EventType_name = map[int32]string{
+	0: "EVENT_TYPE_UNKNOWN",
+	1: "EVENT_TYPE_CLIENT_HEADER",
+	2: "EVENT_TYPE_SERVER_HEADER",
+	3: "EVENT_TYPE_CLIENT_MESSAGE",
+	4: "EVENT_TYPE_SERVER_MESSAGE",
+	5: "EVENT_TYPE_CLIENT_HALF_CLOSE",
+	6: "EVENT_TYPE_SERVER_TRAILER",
+	7: "EVENT_TYPE_CANCEL",
+}
+var GrpcLogEntry_EventType_value = map[string]int32{
+	"EVENT_TYPE_UNKNOWN":           0,
+	"EVENT_TYPE_CLIENT_HEADER":     1,
+	"EVENT_TYPE_SERVER_HEADER":     2,
+	"EVENT_TYPE_CLIENT_MESSAGE":    3,
+	"EVENT_TYPE_SERVER_MESSAGE":    4,
+	"EVENT_TYPE_CLIENT_HALF_CLOSE": 5,
+	"EVENT_TYPE_SERVER_TRAILER":    6,
+	"EVENT_TYPE_CANCEL":            7,
+}
+
+func (x GrpcLogEntry_EventType) String() string {
+	return proto.EnumName(GrpcLogEntry_EventType_name, int32(x))
+}
+func (GrpcLogEntry_EventType) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor_binarylog_264c8c9c551ce911, []int{0, 0}
+}
+
+// Enumerates the entity that generates the log entry
+type GrpcLogEntry_Logger int32
+
+const (
+	GrpcLogEntry_LOGGER_UNKNOWN GrpcLogEntry_Logger = 0
+	GrpcLogEntry_LOGGER_CLIENT  GrpcLogEntry_Logger = 1
+	GrpcLogEntry_LOGGER_SERVER  GrpcLogEntry_Logger = 2
+)
+
+var GrpcLogEntry_Logger_name = map[int32]string{
+	0: "LOGGER_UNKNOWN",
+	1: "LOGGER_CLIENT",
+	2: "LOGGER_SERVER",
+}
+var GrpcLogEntry_Logger_value = map[string]int32{
+	"LOGGER_UNKNOWN": 0,
+	"LOGGER_CLIENT":  1,
+	"LOGGER_SERVER":  2,
+}
+
+func (x GrpcLogEntry_Logger) String() string {
+	return proto.EnumName(GrpcLogEntry_Logger_name, int32(x))
+}
+func (GrpcLogEntry_Logger) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor_binarylog_264c8c9c551ce911, []int{0, 1}
+}
+
+type Address_Type int32
+
+const (
+	Address_TYPE_UNKNOWN Address_Type = 0
+	// address is in 1.2.3.4 form
+	Address_TYPE_IPV4 Address_Type = 1
+	// address is in IPv6 canonical form (RFC5952 section 4)
+	// The scope is NOT included in the address string.
+	Address_TYPE_IPV6 Address_Type = 2
+	// address is UDS string
+	Address_TYPE_UNIX Address_Type = 3
+)
+
+var Address_Type_name = map[int32]string{
+	0: "TYPE_UNKNOWN",
+	1: "TYPE_IPV4",
+	2: "TYPE_IPV6",
+	3: "TYPE_UNIX",
+}
+var Address_Type_value = map[string]int32{
+	"TYPE_UNKNOWN": 0,
+	"TYPE_IPV4":    1,
+	"TYPE_IPV6":    2,
+	"TYPE_UNIX":    3,
+}
+
+func (x Address_Type) String() string {
+	return proto.EnumName(Address_Type_name, int32(x))
+}
+func (Address_Type) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor_binarylog_264c8c9c551ce911, []int{7, 0}
+}
+
+// Log entry we store in binary logs
+type GrpcLogEntry struct {
+	// The timestamp of the binary log message
+	Timestamp *timestamp.Timestamp `protobuf:"bytes,1,opt,name=timestamp,proto3" json:"timestamp,omitempty"`
+	// Uniquely identifies a call. The value must not be 0 in order to disambiguate
+	// from an unset value.
+	// Each call may have several log entries, they will all have the same call_id.
+	// Nothing is guaranteed about their value other than they are unique across
+	// different RPCs in the same gRPC process.
+	CallId uint64 `protobuf:"varint,2,opt,name=call_id,json=callId,proto3" json:"call_id,omitempty"`
+	// The entry sequence id for this call. The first GrpcLogEntry has a
+	// value of 1, to disambiguate from an unset value. The purpose of
+	// this field is to detect missing entries in environments where
+	// durability or ordering is not guaranteed.
+	SequenceIdWithinCall uint64                 `protobuf:"varint,3,opt,name=sequence_id_within_call,json=sequenceIdWithinCall,proto3" json:"sequence_id_within_call,omitempty"`
+	Type                 GrpcLogEntry_EventType `protobuf:"varint,4,opt,name=type,proto3,enum=grpc.binarylog.v1.GrpcLogEntry_EventType" json:"type,omitempty"`
+	Logger               GrpcLogEntry_Logger    `protobuf:"varint,5,opt,name=logger,proto3,enum=grpc.binarylog.v1.GrpcLogEntry_Logger" json:"logger,omitempty"`
+	// The logger uses one of the following fields to record the payload,
+	// according to the type of the log entry.
+	//
+	// Types that are valid to be assigned to Payload:
+	//	*GrpcLogEntry_ClientHeader
+	//	*GrpcLogEntry_ServerHeader
+	//	*GrpcLogEntry_Message
+	//	*GrpcLogEntry_Trailer
+	Payload isGrpcLogEntry_Payload `protobuf_oneof:"payload"`
+	// true if payload does not represent the full message or metadata.
+	PayloadTruncated bool `protobuf:"varint,10,opt,name=payload_truncated,json=payloadTruncated,proto3" json:"payload_truncated,omitempty"`
+	// Peer address information, will only be recorded on the first
+	// incoming event. On client side, peer is logged on
+	// EVENT_TYPE_SERVER_HEADER normally or EVENT_TYPE_SERVER_TRAILER in
+	// the case of trailers-only. On server side, peer is always
+	// logged on EVENT_TYPE_CLIENT_HEADER.
+	Peer                 *Address `protobuf:"bytes,11,opt,name=peer,proto3" json:"peer,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *GrpcLogEntry) Reset()         { *m = GrpcLogEntry{} }
+func (m *GrpcLogEntry) String() string { return proto.CompactTextString(m) }
+func (*GrpcLogEntry) ProtoMessage()    {}
+func (*GrpcLogEntry) Descriptor() ([]byte, []int) {
+	return fileDescriptor_binarylog_264c8c9c551ce911, []int{0}
+}
+func (m *GrpcLogEntry) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_GrpcLogEntry.Unmarshal(m, b)
+}
+func (m *GrpcLogEntry) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_GrpcLogEntry.Marshal(b, m, deterministic)
+}
+func (dst *GrpcLogEntry) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_GrpcLogEntry.Merge(dst, src)
+}
+func (m *GrpcLogEntry) XXX_Size() int {
+	return xxx_messageInfo_GrpcLogEntry.Size(m)
+}
+func (m *GrpcLogEntry) XXX_DiscardUnknown() {
+	xxx_messageInfo_GrpcLogEntry.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_GrpcLogEntry proto.InternalMessageInfo
+
+func (m *GrpcLogEntry) GetTimestamp() *timestamp.Timestamp {
+	if m != nil {
+		return m.Timestamp
+	}
+	return nil
+}
+
+func (m *GrpcLogEntry) GetCallId() uint64 {
+	if m != nil {
+		return m.CallId
+	}
+	return 0
+}
+
+func (m *GrpcLogEntry) GetSequenceIdWithinCall() uint64 {
+	if m != nil {
+		return m.SequenceIdWithinCall
+	}
+	return 0
+}
+
+func (m *GrpcLogEntry) GetType() GrpcLogEntry_EventType {
+	if m != nil {
+		return m.Type
+	}
+	return GrpcLogEntry_EVENT_TYPE_UNKNOWN
+}
+
+func (m *GrpcLogEntry) GetLogger() GrpcLogEntry_Logger {
+	if m != nil {
+		return m.Logger
+	}
+	return GrpcLogEntry_LOGGER_UNKNOWN
+}
+
+type isGrpcLogEntry_Payload interface {
+	isGrpcLogEntry_Payload()
+}
+
+type GrpcLogEntry_ClientHeader struct {
+	ClientHeader *ClientHeader `protobuf:"bytes,6,opt,name=client_header,json=clientHeader,proto3,oneof"`
+}
+
+type GrpcLogEntry_ServerHeader struct {
+	ServerHeader *ServerHeader `protobuf:"bytes,7,opt,name=server_header,json=serverHeader,proto3,oneof"`
+}
+
+type GrpcLogEntry_Message struct {
+	Message *Message `protobuf:"bytes,8,opt,name=message,proto3,oneof"`
+}
+
+type GrpcLogEntry_Trailer struct {
+	Trailer *Trailer `protobuf:"bytes,9,opt,name=trailer,proto3,oneof"`
+}
+
+func (*GrpcLogEntry_ClientHeader) isGrpcLogEntry_Payload() {}
+
+func (*GrpcLogEntry_ServerHeader) isGrpcLogEntry_Payload() {}
+
+func (*GrpcLogEntry_Message) isGrpcLogEntry_Payload() {}
+
+func (*GrpcLogEntry_Trailer) isGrpcLogEntry_Payload() {}
+
+func (m *GrpcLogEntry) GetPayload() isGrpcLogEntry_Payload {
+	if m != nil {
+		return m.Payload
+	}
+	return nil
+}
+
+func (m *GrpcLogEntry) GetClientHeader() *ClientHeader {
+	if x, ok := m.GetPayload().(*GrpcLogEntry_ClientHeader); ok {
+		return x.ClientHeader
+	}
+	return nil
+}
+
+func (m *GrpcLogEntry) GetServerHeader() *ServerHeader {
+	if x, ok := m.GetPayload().(*GrpcLogEntry_ServerHeader); ok {
+		return x.ServerHeader
+	}
+	return nil
+}
+
+func (m *GrpcLogEntry) GetMessage() *Message {
+	if x, ok := m.GetPayload().(*GrpcLogEntry_Message); ok {
+		return x.Message
+	}
+	return nil
+}
+
+func (m *GrpcLogEntry) GetTrailer() *Trailer {
+	if x, ok := m.GetPayload().(*GrpcLogEntry_Trailer); ok {
+		return x.Trailer
+	}
+	return nil
+}
+
+func (m *GrpcLogEntry) GetPayloadTruncated() bool {
+	if m != nil {
+		return m.PayloadTruncated
+	}
+	return false
+}
+
+func (m *GrpcLogEntry) GetPeer() *Address {
+	if m != nil {
+		return m.Peer
+	}
+	return nil
+}
+
+// XXX_OneofFuncs is for the internal use of the proto package.
+func (*GrpcLogEntry) XXX_OneofFuncs() (func(msg proto.Message, b *proto.Buffer) error, func(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error), func(msg proto.Message) (n int), []interface{}) {
+	return _GrpcLogEntry_OneofMarshaler, _GrpcLogEntry_OneofUnmarshaler, _GrpcLogEntry_OneofSizer, []interface{}{
+		(*GrpcLogEntry_ClientHeader)(nil),
+		(*GrpcLogEntry_ServerHeader)(nil),
+		(*GrpcLogEntry_Message)(nil),
+		(*GrpcLogEntry_Trailer)(nil),
+	}
+}
+
+func _GrpcLogEntry_OneofMarshaler(msg proto.Message, b *proto.Buffer) error {
+	m := msg.(*GrpcLogEntry)
+	// payload
+	switch x := m.Payload.(type) {
+	case *GrpcLogEntry_ClientHeader:
+		b.EncodeVarint(6<<3 | proto.WireBytes)
+		if err := b.EncodeMessage(x.ClientHeader); err != nil {
+			return err
+		}
+	case *GrpcLogEntry_ServerHeader:
+		b.EncodeVarint(7<<3 | proto.WireBytes)
+		if err := b.EncodeMessage(x.ServerHeader); err != nil {
+			return err
+		}
+	case *GrpcLogEntry_Message:
+		b.EncodeVarint(8<<3 | proto.WireBytes)
+		if err := b.EncodeMessage(x.Message); err != nil {
+			return err
+		}
+	case *GrpcLogEntry_Trailer:
+		b.EncodeVarint(9<<3 | proto.WireBytes)
+		if err := b.EncodeMessage(x.Trailer); err != nil {
+			return err
+		}
+	case nil:
+	default:
+		return fmt.Errorf("GrpcLogEntry.Payload has unexpected type %T", x)
+	}
+	return nil
+}
+
+func _GrpcLogEntry_OneofUnmarshaler(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error) {
+	m := msg.(*GrpcLogEntry)
+	switch tag {
+	case 6: // payload.client_header
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		msg := new(ClientHeader)
+		err := b.DecodeMessage(msg)
+		m.Payload = &GrpcLogEntry_ClientHeader{msg}
+		return true, err
+	case 7: // payload.server_header
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		msg := new(ServerHeader)
+		err := b.DecodeMessage(msg)
+		m.Payload = &GrpcLogEntry_ServerHeader{msg}
+		return true, err
+	case 8: // payload.message
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		msg := new(Message)
+		err := b.DecodeMessage(msg)
+		m.Payload = &GrpcLogEntry_Message{msg}
+		return true, err
+	case 9: // payload.trailer
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		msg := new(Trailer)
+		err := b.DecodeMessage(msg)
+		m.Payload = &GrpcLogEntry_Trailer{msg}
+		return true, err
+	default:
+		return false, nil
+	}
+}
+
+func _GrpcLogEntry_OneofSizer(msg proto.Message) (n int) {
+	m := msg.(*GrpcLogEntry)
+	// payload
+	switch x := m.Payload.(type) {
+	case *GrpcLogEntry_ClientHeader:
+		s := proto.Size(x.ClientHeader)
+		n += 1 // tag and wire
+		n += proto.SizeVarint(uint64(s))
+		n += s
+	case *GrpcLogEntry_ServerHeader:
+		s := proto.Size(x.ServerHeader)
+		n += 1 // tag and wire
+		n += proto.SizeVarint(uint64(s))
+		n += s
+	case *GrpcLogEntry_Message:
+		s := proto.Size(x.Message)
+		n += 1 // tag and wire
+		n += proto.SizeVarint(uint64(s))
+		n += s
+	case *GrpcLogEntry_Trailer:
+		s := proto.Size(x.Trailer)
+		n += 1 // tag and wire
+		n += proto.SizeVarint(uint64(s))
+		n += s
+	case nil:
+	default:
+		panic(fmt.Sprintf("proto: unexpected type %T in oneof", x))
+	}
+	return n
+}
+
+type ClientHeader struct {
+	// This contains only the metadata from the application.
+	Metadata *Metadata `protobuf:"bytes,1,opt,name=metadata,proto3" json:"metadata,omitempty"`
+	// The name of the RPC method, which looks something like:
+	// /<service>/<method>
+	// Note the leading "/" character.
+	MethodName string `protobuf:"bytes,2,opt,name=method_name,json=methodName,proto3" json:"method_name,omitempty"`
+	// A single process may be used to run multiple virtual
+	// servers with different identities.
+	// The authority is the name of such a server identitiy.
+	// It is typically a portion of the URI in the form of
+	// <host> or <host>:<port> .
+	Authority string `protobuf:"bytes,3,opt,name=authority,proto3" json:"authority,omitempty"`
+	// the RPC timeout
+	Timeout              *duration.Duration `protobuf:"bytes,4,opt,name=timeout,proto3" json:"timeout,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}           `json:"-"`
+	XXX_unrecognized     []byte             `json:"-"`
+	XXX_sizecache        int32              `json:"-"`
+}
+
+func (m *ClientHeader) Reset()         { *m = ClientHeader{} }
+func (m *ClientHeader) String() string { return proto.CompactTextString(m) }
+func (*ClientHeader) ProtoMessage()    {}
+func (*ClientHeader) Descriptor() ([]byte, []int) {
+	return fileDescriptor_binarylog_264c8c9c551ce911, []int{1}
+}
+func (m *ClientHeader) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_ClientHeader.Unmarshal(m, b)
+}
+func (m *ClientHeader) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_ClientHeader.Marshal(b, m, deterministic)
+}
+func (dst *ClientHeader) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_ClientHeader.Merge(dst, src)
+}
+func (m *ClientHeader) XXX_Size() int {
+	return xxx_messageInfo_ClientHeader.Size(m)
+}
+func (m *ClientHeader) XXX_DiscardUnknown() {
+	xxx_messageInfo_ClientHeader.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_ClientHeader proto.InternalMessageInfo
+
+func (m *ClientHeader) GetMetadata() *Metadata {
+	if m != nil {
+		return m.Metadata
+	}
+	return nil
+}
+
+func (m *ClientHeader) GetMethodName() string {
+	if m != nil {
+		return m.MethodName
+	}
+	return ""
+}
+
+func (m *ClientHeader) GetAuthority() string {
+	if m != nil {
+		return m.Authority
+	}
+	return ""
+}
+
+func (m *ClientHeader) GetTimeout() *duration.Duration {
+	if m != nil {
+		return m.Timeout
+	}
+	return nil
+}
+
+type ServerHeader struct {
+	// This contains only the metadata from the application.
+	Metadata             *Metadata `protobuf:"bytes,1,opt,name=metadata,proto3" json:"metadata,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}  `json:"-"`
+	XXX_unrecognized     []byte    `json:"-"`
+	XXX_sizecache        int32     `json:"-"`
+}
+
+func (m *ServerHeader) Reset()         { *m = ServerHeader{} }
+func (m *ServerHeader) String() string { return proto.CompactTextString(m) }
+func (*ServerHeader) ProtoMessage()    {}
+func (*ServerHeader) Descriptor() ([]byte, []int) {
+	return fileDescriptor_binarylog_264c8c9c551ce911, []int{2}
+}
+func (m *ServerHeader) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_ServerHeader.Unmarshal(m, b)
+}
+func (m *ServerHeader) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_ServerHeader.Marshal(b, m, deterministic)
+}
+func (dst *ServerHeader) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_ServerHeader.Merge(dst, src)
+}
+func (m *ServerHeader) XXX_Size() int {
+	return xxx_messageInfo_ServerHeader.Size(m)
+}
+func (m *ServerHeader) XXX_DiscardUnknown() {
+	xxx_messageInfo_ServerHeader.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_ServerHeader proto.InternalMessageInfo
+
+func (m *ServerHeader) GetMetadata() *Metadata {
+	if m != nil {
+		return m.Metadata
+	}
+	return nil
+}
+
+type Trailer struct {
+	// This contains only the metadata from the application.
+	Metadata *Metadata `protobuf:"bytes,1,opt,name=metadata,proto3" json:"metadata,omitempty"`
+	// The gRPC status code.
+	StatusCode uint32 `protobuf:"varint,2,opt,name=status_code,json=statusCode,proto3" json:"status_code,omitempty"`
+	// An original status message before any transport specific
+	// encoding.
+	StatusMessage string `protobuf:"bytes,3,opt,name=status_message,json=statusMessage,proto3" json:"status_message,omitempty"`
+	// The value of the 'grpc-status-details-bin' metadata key. If
+	// present, this is always an encoded 'google.rpc.Status' message.
+	StatusDetails        []byte   `protobuf:"bytes,4,opt,name=status_details,json=statusDetails,proto3" json:"status_details,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *Trailer) Reset()         { *m = Trailer{} }
+func (m *Trailer) String() string { return proto.CompactTextString(m) }
+func (*Trailer) ProtoMessage()    {}
+func (*Trailer) Descriptor() ([]byte, []int) {
+	return fileDescriptor_binarylog_264c8c9c551ce911, []int{3}
+}
+func (m *Trailer) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Trailer.Unmarshal(m, b)
+}
+func (m *Trailer) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Trailer.Marshal(b, m, deterministic)
+}
+func (dst *Trailer) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Trailer.Merge(dst, src)
+}
+func (m *Trailer) XXX_Size() int {
+	return xxx_messageInfo_Trailer.Size(m)
+}
+func (m *Trailer) XXX_DiscardUnknown() {
+	xxx_messageInfo_Trailer.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Trailer proto.InternalMessageInfo
+
+func (m *Trailer) GetMetadata() *Metadata {
+	if m != nil {
+		return m.Metadata
+	}
+	return nil
+}
+
+func (m *Trailer) GetStatusCode() uint32 {
+	if m != nil {
+		return m.StatusCode
+	}
+	return 0
+}
+
+func (m *Trailer) GetStatusMessage() string {
+	if m != nil {
+		return m.StatusMessage
+	}
+	return ""
+}
+
+func (m *Trailer) GetStatusDetails() []byte {
+	if m != nil {
+		return m.StatusDetails
+	}
+	return nil
+}
+
+// Message payload, used by CLIENT_MESSAGE and SERVER_MESSAGE
+type Message struct {
+	// Length of the message. It may not be the same as the length of the
+	// data field, as the logging payload can be truncated or omitted.
+	Length uint32 `protobuf:"varint,1,opt,name=length,proto3" json:"length,omitempty"`
+	// May be truncated or omitted.
+	Data                 []byte   `protobuf:"bytes,2,opt,name=data,proto3" json:"data,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *Message) Reset()         { *m = Message{} }
+func (m *Message) String() string { return proto.CompactTextString(m) }
+func (*Message) ProtoMessage()    {}
+func (*Message) Descriptor() ([]byte, []int) {
+	return fileDescriptor_binarylog_264c8c9c551ce911, []int{4}
+}
+func (m *Message) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Message.Unmarshal(m, b)
+}
+func (m *Message) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Message.Marshal(b, m, deterministic)
+}
+func (dst *Message) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Message.Merge(dst, src)
+}
+func (m *Message) XXX_Size() int {
+	return xxx_messageInfo_Message.Size(m)
+}
+func (m *Message) XXX_DiscardUnknown() {
+	xxx_messageInfo_Message.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Message proto.InternalMessageInfo
+
+func (m *Message) GetLength() uint32 {
+	if m != nil {
+		return m.Length
+	}
+	return 0
+}
+
+func (m *Message) GetData() []byte {
+	if m != nil {
+		return m.Data
+	}
+	return nil
+}
+
+// A list of metadata pairs, used in the payload of client header,
+// server header, and server trailer.
+// Implementations may omit some entries to honor the header limits
+// of GRPC_BINARY_LOG_CONFIG.
+//
+// Header keys added by gRPC are omitted. To be more specific,
+// implementations will not log the following entries, and this is
+// not to be treated as a truncation:
+// - entries handled by grpc that are not user visible, such as those
+//   that begin with 'grpc-' (with exception of grpc-trace-bin)
+//   or keys like 'lb-token'
+// - transport specific entries, including but not limited to:
+//   ':path', ':authority', 'content-encoding', 'user-agent', 'te', etc
+// - entries added for call credentials
+//
+// Implementations must always log grpc-trace-bin if it is present.
+// Practically speaking it will only be visible on server side because
+// grpc-trace-bin is managed by low level client side mechanisms
+// inaccessible from the application level. On server side, the
+// header is just a normal metadata key.
+// The pair will not count towards the size limit.
+type Metadata struct {
+	Entry                []*MetadataEntry `protobuf:"bytes,1,rep,name=entry,proto3" json:"entry,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}         `json:"-"`
+	XXX_unrecognized     []byte           `json:"-"`
+	XXX_sizecache        int32            `json:"-"`
+}
+
+func (m *Metadata) Reset()         { *m = Metadata{} }
+func (m *Metadata) String() string { return proto.CompactTextString(m) }
+func (*Metadata) ProtoMessage()    {}
+func (*Metadata) Descriptor() ([]byte, []int) {
+	return fileDescriptor_binarylog_264c8c9c551ce911, []int{5}
+}
+func (m *Metadata) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Metadata.Unmarshal(m, b)
+}
+func (m *Metadata) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Metadata.Marshal(b, m, deterministic)
+}
+func (dst *Metadata) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Metadata.Merge(dst, src)
+}
+func (m *Metadata) XXX_Size() int {
+	return xxx_messageInfo_Metadata.Size(m)
+}
+func (m *Metadata) XXX_DiscardUnknown() {
+	xxx_messageInfo_Metadata.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Metadata proto.InternalMessageInfo
+
+func (m *Metadata) GetEntry() []*MetadataEntry {
+	if m != nil {
+		return m.Entry
+	}
+	return nil
+}
+
+// A metadata key value pair
+type MetadataEntry struct {
+	Key                  string   `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
+	Value                []byte   `protobuf:"bytes,2,opt,name=value,proto3" json:"value,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *MetadataEntry) Reset()         { *m = MetadataEntry{} }
+func (m *MetadataEntry) String() string { return proto.CompactTextString(m) }
+func (*MetadataEntry) ProtoMessage()    {}
+func (*MetadataEntry) Descriptor() ([]byte, []int) {
+	return fileDescriptor_binarylog_264c8c9c551ce911, []int{6}
+}
+func (m *MetadataEntry) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_MetadataEntry.Unmarshal(m, b)
+}
+func (m *MetadataEntry) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_MetadataEntry.Marshal(b, m, deterministic)
+}
+func (dst *MetadataEntry) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_MetadataEntry.Merge(dst, src)
+}
+func (m *MetadataEntry) XXX_Size() int {
+	return xxx_messageInfo_MetadataEntry.Size(m)
+}
+func (m *MetadataEntry) XXX_DiscardUnknown() {
+	xxx_messageInfo_MetadataEntry.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_MetadataEntry proto.InternalMessageInfo
+
+func (m *MetadataEntry) GetKey() string {
+	if m != nil {
+		return m.Key
+	}
+	return ""
+}
+
+func (m *MetadataEntry) GetValue() []byte {
+	if m != nil {
+		return m.Value
+	}
+	return nil
+}
+
+// Address information
+type Address struct {
+	Type    Address_Type `protobuf:"varint,1,opt,name=type,proto3,enum=grpc.binarylog.v1.Address_Type" json:"type,omitempty"`
+	Address string       `protobuf:"bytes,2,opt,name=address,proto3" json:"address,omitempty"`
+	// only for TYPE_IPV4 and TYPE_IPV6
+	IpPort               uint32   `protobuf:"varint,3,opt,name=ip_port,json=ipPort,proto3" json:"ip_port,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *Address) Reset()         { *m = Address{} }
+func (m *Address) String() string { return proto.CompactTextString(m) }
+func (*Address) ProtoMessage()    {}
+func (*Address) Descriptor() ([]byte, []int) {
+	return fileDescriptor_binarylog_264c8c9c551ce911, []int{7}
+}
+func (m *Address) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Address.Unmarshal(m, b)
+}
+func (m *Address) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Address.Marshal(b, m, deterministic)
+}
+func (dst *Address) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Address.Merge(dst, src)
+}
+func (m *Address) XXX_Size() int {
+	return xxx_messageInfo_Address.Size(m)
+}
+func (m *Address) XXX_DiscardUnknown() {
+	xxx_messageInfo_Address.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Address proto.InternalMessageInfo
+
+func (m *Address) GetType() Address_Type {
+	if m != nil {
+		return m.Type
+	}
+	return Address_TYPE_UNKNOWN
+}
+
+func (m *Address) GetAddress() string {
+	if m != nil {
+		return m.Address
+	}
+	return ""
+}
+
+func (m *Address) GetIpPort() uint32 {
+	if m != nil {
+		return m.IpPort
+	}
+	return 0
+}
+
+func init() {
+	proto.RegisterType((*GrpcLogEntry)(nil), "grpc.binarylog.v1.GrpcLogEntry")
+	proto.RegisterType((*ClientHeader)(nil), "grpc.binarylog.v1.ClientHeader")
+	proto.RegisterType((*ServerHeader)(nil), "grpc.binarylog.v1.ServerHeader")
+	proto.RegisterType((*Trailer)(nil), "grpc.binarylog.v1.Trailer")
+	proto.RegisterType((*Message)(nil), "grpc.binarylog.v1.Message")
+	proto.RegisterType((*Metadata)(nil), "grpc.binarylog.v1.Metadata")
+	proto.RegisterType((*MetadataEntry)(nil), "grpc.binarylog.v1.MetadataEntry")
+	proto.RegisterType((*Address)(nil), "grpc.binarylog.v1.Address")
+	proto.RegisterEnum("grpc.binarylog.v1.GrpcLogEntry_EventType", GrpcLogEntry_EventType_name, GrpcLogEntry_EventType_value)
+	proto.RegisterEnum("grpc.binarylog.v1.GrpcLogEntry_Logger", GrpcLogEntry_Logger_name, GrpcLogEntry_Logger_value)
+	proto.RegisterEnum("grpc.binarylog.v1.Address_Type", Address_Type_name, Address_Type_value)
+}
+
+func init() {
+	proto.RegisterFile("grpc/binarylog/grpc_binarylog_v1/binarylog.proto", fileDescriptor_binarylog_264c8c9c551ce911)
+}
+
+var fileDescriptor_binarylog_264c8c9c551ce911 = []byte{
+	// 900 bytes of a gzipped FileDescriptorProto
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+	0x56, 0xa4, 0x9e, 0xd3, 0xae, 0x14, 0x68, 0xbd, 0x04, 0x3d, 0x8f, 0x78, 0x0a, 0x95, 0x90, 0x46,
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+	0xa0, 0xf4, 0x2b, 0x5d, 0xcb, 0xec, 0x55, 0x9c, 0x7e, 0xa2, 0x63, 0xd8, 0x5f, 0x91, 0x70, 0x49,
+	0xb3, 0xdc, 0xca, 0xb0, 0xfe, 0xd4, 0x40, 0xcf, 0xe6, 0x18, 0x5d, 0x64, 0xdb, 0x59, 0x93, 0xcb,
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+	0x1f, 0x8f, 0x20, 0x76, 0x63, 0xc6, 0x85, 0xac, 0x6a, 0x03, 0x57, 0x82, 0x78, 0xcc, 0xb8, 0xb0,
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+	0xea, 0xbb, 0x8a, 0xec, 0xf2, 0x8b, 0xbf, 0x03, 0x00, 0x00, 0xff, 0xff, 0xe7, 0xf6, 0x4b, 0x50,
+	0xd4, 0x07, 0x00, 0x00,
+}
diff --git a/vendor/google.golang.org/grpc/health/client.go b/vendor/google.golang.org/grpc/health/client.go
deleted file mode 100644
index e15f04c..0000000
--- a/vendor/google.golang.org/grpc/health/client.go
+++ /dev/null
@@ -1,107 +0,0 @@
-/*
- *
- * 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 health
-
-import (
-	"context"
-	"fmt"
-	"io"
-	"time"
-
-	"google.golang.org/grpc"
-	"google.golang.org/grpc/codes"
-	healthpb "google.golang.org/grpc/health/grpc_health_v1"
-	"google.golang.org/grpc/internal"
-	"google.golang.org/grpc/internal/backoff"
-	"google.golang.org/grpc/status"
-)
-
-const maxDelay = 120 * time.Second
-
-var backoffStrategy = backoff.Exponential{MaxDelay: maxDelay}
-var backoffFunc = func(ctx context.Context, retries int) bool {
-	d := backoffStrategy.Backoff(retries)
-	timer := time.NewTimer(d)
-	select {
-	case <-timer.C:
-		return true
-	case <-ctx.Done():
-		timer.Stop()
-		return false
-	}
-}
-
-func init() {
-	internal.HealthCheckFunc = clientHealthCheck
-}
-
-func clientHealthCheck(ctx context.Context, newStream func() (interface{}, error), reportHealth func(bool), service string) error {
-	tryCnt := 0
-
-retryConnection:
-	for {
-		// Backs off if the connection has failed in some way without receiving a message in the previous retry.
-		if tryCnt > 0 && !backoffFunc(ctx, tryCnt-1) {
-			return nil
-		}
-		tryCnt++
-
-		if ctx.Err() != nil {
-			return nil
-		}
-		rawS, err := newStream()
-		if err != nil {
-			continue retryConnection
-		}
-
-		s, ok := rawS.(grpc.ClientStream)
-		// Ideally, this should never happen. But if it happens, the server is marked as healthy for LBing purposes.
-		if !ok {
-			reportHealth(true)
-			return fmt.Errorf("newStream returned %v (type %T); want grpc.ClientStream", rawS, rawS)
-		}
-
-		if err = s.SendMsg(&healthpb.HealthCheckRequest{Service: service}); err != nil && err != io.EOF {
-			// Stream should have been closed, so we can safely continue to create a new stream.
-			continue retryConnection
-		}
-		s.CloseSend()
-
-		resp := new(healthpb.HealthCheckResponse)
-		for {
-			err = s.RecvMsg(resp)
-
-			// Reports healthy for the LBing purposes if health check is not implemented in the server.
-			if status.Code(err) == codes.Unimplemented {
-				reportHealth(true)
-				return err
-			}
-
-			// Reports unhealthy if server's Watch method gives an error other than UNIMPLEMENTED.
-			if err != nil {
-				reportHealth(false)
-				continue retryConnection
-			}
-
-			// As a message has been received, removes the need for backoff for the next retry by reseting the try count.
-			tryCnt = 0
-			reportHealth(resp.Status == healthpb.HealthCheckResponse_SERVING)
-		}
-	}
-}
diff --git a/vendor/google.golang.org/grpc/health/grpc_health_v1/health.pb.go b/vendor/google.golang.org/grpc/health/grpc_health_v1/health.pb.go
new file mode 100644
index 0000000..c2f2c77
--- /dev/null
+++ b/vendor/google.golang.org/grpc/health/grpc_health_v1/health.pb.go
@@ -0,0 +1,327 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// source: grpc/health/v1/health.proto
+
+package grpc_health_v1 // import "google.golang.org/grpc/health/grpc_health_v1"
+
+import proto "github.com/golang/protobuf/proto"
+import fmt "fmt"
+import math "math"
+
+import (
+	context "golang.org/x/net/context"
+	grpc "google.golang.org/grpc"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
+
+type HealthCheckResponse_ServingStatus int32
+
+const (
+	HealthCheckResponse_UNKNOWN         HealthCheckResponse_ServingStatus = 0
+	HealthCheckResponse_SERVING         HealthCheckResponse_ServingStatus = 1
+	HealthCheckResponse_NOT_SERVING     HealthCheckResponse_ServingStatus = 2
+	HealthCheckResponse_SERVICE_UNKNOWN HealthCheckResponse_ServingStatus = 3
+)
+
+var HealthCheckResponse_ServingStatus_name = map[int32]string{
+	0: "UNKNOWN",
+	1: "SERVING",
+	2: "NOT_SERVING",
+	3: "SERVICE_UNKNOWN",
+}
+var HealthCheckResponse_ServingStatus_value = map[string]int32{
+	"UNKNOWN":         0,
+	"SERVING":         1,
+	"NOT_SERVING":     2,
+	"SERVICE_UNKNOWN": 3,
+}
+
+func (x HealthCheckResponse_ServingStatus) String() string {
+	return proto.EnumName(HealthCheckResponse_ServingStatus_name, int32(x))
+}
+func (HealthCheckResponse_ServingStatus) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor_health_6b1a06aa67f91efd, []int{1, 0}
+}
+
+type HealthCheckRequest struct {
+	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_6b1a06aa67f91efd, []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)
+}
+
+var xxx_messageInfo_HealthCheckRequest proto.InternalMessageInfo
+
+func (m *HealthCheckRequest) GetService() string {
+	if m != nil {
+		return m.Service
+	}
+	return ""
+}
+
+type HealthCheckResponse struct {
+	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 fileDescriptor_health_6b1a06aa67f91efd, []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 {
+		return m.Status
+	}
+	return HealthCheckResponse_UNKNOWN
+}
+
+func init() {
+	proto.RegisterType((*HealthCheckRequest)(nil), "grpc.health.v1.HealthCheckRequest")
+	proto.RegisterType((*HealthCheckResponse)(nil), "grpc.health.v1.HealthCheckResponse")
+	proto.RegisterEnum("grpc.health.v1.HealthCheckResponse_ServingStatus", HealthCheckResponse_ServingStatus_name, HealthCheckResponse_ServingStatus_value)
+}
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ context.Context
+var _ grpc.ClientConn
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+const _ = grpc.SupportPackageIsVersion4
+
+// 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 {
+	// If the requested service is unknown, the call will fail with status
+	// NOT_FOUND.
+	Check(ctx context.Context, in *HealthCheckRequest, opts ...grpc.CallOption) (*HealthCheckResponse, error)
+	// Performs a watch for the serving status of the requested service.
+	// The server will immediately send back a message indicating the current
+	// serving status.  It will then subsequently send a new message whenever
+	// the service's serving status changes.
+	//
+	// If the requested service is unknown when the call is received, the
+	// server will send a message setting the serving status to
+	// SERVICE_UNKNOWN but will *not* terminate the call.  If at some
+	// future point, the serving status of the service becomes known, the
+	// server will send a new message with the service's serving status.
+	//
+	// If the call terminates with status UNIMPLEMENTED, then clients
+	// should assume this method is not supported and should not retry the
+	// call.  If the call terminates with any other status (including OK),
+	// clients should retry the call with appropriate exponential backoff.
+	Watch(ctx context.Context, in *HealthCheckRequest, opts ...grpc.CallOption) (Health_WatchClient, error)
+}
+
+type healthClient struct {
+	cc *grpc.ClientConn
+}
+
+func NewHealthClient(cc *grpc.ClientConn) HealthClient {
+	return &healthClient{cc}
+}
+
+func (c *healthClient) Check(ctx context.Context, in *HealthCheckRequest, opts ...grpc.CallOption) (*HealthCheckResponse, error) {
+	out := new(HealthCheckResponse)
+	err := c.cc.Invoke(ctx, "/grpc.health.v1.Health/Check", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *healthClient) Watch(ctx context.Context, in *HealthCheckRequest, opts ...grpc.CallOption) (Health_WatchClient, error) {
+	stream, err := c.cc.NewStream(ctx, &_Health_serviceDesc.Streams[0], "/grpc.health.v1.Health/Watch", opts...)
+	if err != nil {
+		return nil, err
+	}
+	x := &healthWatchClient{stream}
+	if err := x.ClientStream.SendMsg(in); err != nil {
+		return nil, err
+	}
+	if err := x.ClientStream.CloseSend(); err != nil {
+		return nil, err
+	}
+	return x, nil
+}
+
+type Health_WatchClient interface {
+	Recv() (*HealthCheckResponse, error)
+	grpc.ClientStream
+}
+
+type healthWatchClient struct {
+	grpc.ClientStream
+}
+
+func (x *healthWatchClient) Recv() (*HealthCheckResponse, error) {
+	m := new(HealthCheckResponse)
+	if err := x.ClientStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+// HealthServer is the server API for Health service.
+type HealthServer interface {
+	// If the requested service is unknown, the call will fail with status
+	// NOT_FOUND.
+	Check(context.Context, *HealthCheckRequest) (*HealthCheckResponse, error)
+	// Performs a watch for the serving status of the requested service.
+	// The server will immediately send back a message indicating the current
+	// serving status.  It will then subsequently send a new message whenever
+	// the service's serving status changes.
+	//
+	// If the requested service is unknown when the call is received, the
+	// server will send a message setting the serving status to
+	// SERVICE_UNKNOWN but will *not* terminate the call.  If at some
+	// future point, the serving status of the service becomes known, the
+	// server will send a new message with the service's serving status.
+	//
+	// If the call terminates with status UNIMPLEMENTED, then clients
+	// should assume this method is not supported and should not retry the
+	// call.  If the call terminates with any other status (including OK),
+	// clients should retry the call with appropriate exponential backoff.
+	Watch(*HealthCheckRequest, Health_WatchServer) error
+}
+
+func RegisterHealthServer(s *grpc.Server, srv HealthServer) {
+	s.RegisterService(&_Health_serviceDesc, srv)
+}
+
+func _Health_Check_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(HealthCheckRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(HealthServer).Check(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/grpc.health.v1.Health/Check",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(HealthServer).Check(ctx, req.(*HealthCheckRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Health_Watch_Handler(srv interface{}, stream grpc.ServerStream) error {
+	m := new(HealthCheckRequest)
+	if err := stream.RecvMsg(m); err != nil {
+		return err
+	}
+	return srv.(HealthServer).Watch(m, &healthWatchServer{stream})
+}
+
+type Health_WatchServer interface {
+	Send(*HealthCheckResponse) error
+	grpc.ServerStream
+}
+
+type healthWatchServer struct {
+	grpc.ServerStream
+}
+
+func (x *healthWatchServer) Send(m *HealthCheckResponse) error {
+	return x.ServerStream.SendMsg(m)
+}
+
+var _Health_serviceDesc = grpc.ServiceDesc{
+	ServiceName: "grpc.health.v1.Health",
+	HandlerType: (*HealthServer)(nil),
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "Check",
+			Handler:    _Health_Check_Handler,
+		},
+	},
+	Streams: []grpc.StreamDesc{
+		{
+			StreamName:    "Watch",
+			Handler:       _Health_Watch_Handler,
+			ServerStreams: true,
+		},
+	},
+	Metadata: "grpc/health/v1/health.proto",
+}
+
+func init() { proto.RegisterFile("grpc/health/v1/health.proto", fileDescriptor_health_6b1a06aa67f91efd) }
+
+var fileDescriptor_health_6b1a06aa67f91efd = []byte{
+	// 297 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0x92, 0x4e, 0x2f, 0x2a, 0x48,
+	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, 0xda, 0xc8, 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, 0xf2, 0xe7, 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, 0x42, 0xc2, 0x5c, 0xfc, 0x60, 0x8e, 0xb3,
+	0x6b, 0x3c, 0x4c, 0x0b, 0xb3, 0xd1, 0x3a, 0x46, 0x2e, 0x36, 0x88, 0xf5, 0x42, 0x01, 0x5c, 0xac,
+	0x60, 0x27, 0x08, 0x29, 0xe1, 0x75, 0x1f, 0x38, 0x14, 0xa4, 0x94, 0x89, 0xf0, 0x83, 0x50, 0x10,
+	0x17, 0x6b, 0x78, 0x62, 0x49, 0x72, 0x06, 0xd5, 0x4c, 0x34, 0x60, 0x74, 0x4a, 0xe4, 0x12, 0xcc,
+	0xcc, 0x47, 0x53, 0xea, 0xc4, 0x0d, 0x51, 0x1b, 0x00, 0x8a, 0xc6, 0x00, 0xc6, 0x28, 0x9d, 0xf4,
+	0xfc, 0xfc, 0xf4, 0x9c, 0x54, 0xbd, 0xf4, 0xfc, 0x9c, 0xc4, 0xbc, 0x74, 0xbd, 0xfc, 0xa2, 0x74,
+	0x7d, 0xe4, 0x78, 0x07, 0xb1, 0xe3, 0x21, 0xec, 0xf8, 0x32, 0xc3, 0x55, 0x4c, 0x7c, 0xee, 0x20,
+	0xd3, 0x20, 0x46, 0xe8, 0x85, 0x19, 0x26, 0xb1, 0x81, 0x93, 0x83, 0x31, 0x20, 0x00, 0x00, 0xff,
+	0xff, 0x12, 0x7d, 0x96, 0xcb, 0x2d, 0x02, 0x00, 0x00,
+}
diff --git a/vendor/google.golang.org/grpc/health/regenerate.sh b/vendor/google.golang.org/grpc/health/regenerate.sh
deleted file mode 100755
index b11eccb..0000000
--- a/vendor/google.golang.org/grpc/health/regenerate.sh
+++ /dev/null
@@ -1,33 +0,0 @@
-#!/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/
-
diff --git a/vendor/google.golang.org/grpc/health/server.go b/vendor/google.golang.org/grpc/health/server.go
deleted file mode 100644
index c86e499..0000000
--- a/vendor/google.golang.org/grpc/health/server.go
+++ /dev/null
@@ -1,125 +0,0 @@
-/*
- *
- * 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.
- *
- */
-
-//go:generate ./regenerate.sh
-
-// Package health provides a service that exposes server's health and it must be
-// imported to enable support for client-side health checks.
-package health
-
-import (
-	"context"
-	"sync"
-
-	"google.golang.org/grpc/codes"
-	healthgrpc "google.golang.org/grpc/health/grpc_health_v1"
-	healthpb "google.golang.org/grpc/health/grpc_health_v1"
-	"google.golang.org/grpc/status"
-)
-
-// Server implements `service Health`.
-type Server struct {
-	mu sync.Mutex
-	// statusMap stores the serving status of the services this Server monitors.
-	statusMap map[string]healthpb.HealthCheckResponse_ServingStatus
-	updates   map[string]map[healthgrpc.Health_WatchServer]chan healthpb.HealthCheckResponse_ServingStatus
-}
-
-// NewServer returns a new Server.
-func NewServer() *Server {
-	return &Server{
-		statusMap: map[string]healthpb.HealthCheckResponse_ServingStatus{"": healthpb.HealthCheckResponse_SERVING},
-		updates:   make(map[string]map[healthgrpc.Health_WatchServer]chan healthpb.HealthCheckResponse_ServingStatus),
-	}
-}
-
-// Check implements `service Health`.
-func (s *Server) Check(ctx context.Context, in *healthpb.HealthCheckRequest) (*healthpb.HealthCheckResponse, error) {
-	s.mu.Lock()
-	defer s.mu.Unlock()
-	if servingStatus, ok := s.statusMap[in.Service]; ok {
-		return &healthpb.HealthCheckResponse{
-			Status: servingStatus,
-		}, nil
-	}
-	return nil, status.Error(codes.NotFound, "unknown service")
-}
-
-// Watch implements `service Health`.
-func (s *Server) Watch(in *healthpb.HealthCheckRequest, stream healthgrpc.Health_WatchServer) error {
-	service := in.Service
-	// update channel is used for getting service status updates.
-	update := make(chan healthpb.HealthCheckResponse_ServingStatus, 1)
-	s.mu.Lock()
-	// Puts the initial status to the channel.
-	if servingStatus, ok := s.statusMap[service]; ok {
-		update <- servingStatus
-	} else {
-		update <- healthpb.HealthCheckResponse_SERVICE_UNKNOWN
-	}
-
-	// Registers the update channel to the correct place in the updates map.
-	if _, ok := s.updates[service]; !ok {
-		s.updates[service] = make(map[healthgrpc.Health_WatchServer]chan healthpb.HealthCheckResponse_ServingStatus)
-	}
-	s.updates[service][stream] = update
-	defer func() {
-		s.mu.Lock()
-		delete(s.updates[service], stream)
-		s.mu.Unlock()
-	}()
-	s.mu.Unlock()
-
-	var lastSentStatus healthpb.HealthCheckResponse_ServingStatus = -1
-	for {
-		select {
-		// Status updated. Sends the up-to-date status to the client.
-		case servingStatus := <-update:
-			if lastSentStatus == servingStatus {
-				continue
-			}
-			lastSentStatus = servingStatus
-			err := stream.Send(&healthpb.HealthCheckResponse{Status: servingStatus})
-			if err != nil {
-				return status.Error(codes.Canceled, "Stream has ended.")
-			}
-		// Context done. Removes the update channel from the updates map.
-		case <-stream.Context().Done():
-			return status.Error(codes.Canceled, "Stream has ended.")
-		}
-	}
-}
-
-// SetServingStatus is called when need to reset the serving status of a service
-// or insert a new service entry into the statusMap.
-func (s *Server) SetServingStatus(service string, servingStatus healthpb.HealthCheckResponse_ServingStatus) {
-	s.mu.Lock()
-	defer s.mu.Unlock()
-
-	s.statusMap[service] = servingStatus
-	for _, update := range s.updates[service] {
-		// Clears previous updates, that are not sent to the client, from the channel.
-		// This can happen if the client is not reading and the server gets flow control limited.
-		select {
-		case <-update:
-		default:
-		}
-		// Puts the most recent update to the channel.
-		update <- servingStatus
-	}
-}