Extend Management to support peer changes distribution (#55)

* feature: add peer sync and a server public key endpoints
* test: add Management.Sync() gRpc endpoint test
* feat: implement peer sync
* docs: added some comments to the Management server
* chore: use for loop over channel when monitoring peer updates
* fix: exit infinite loop when sending updates to peers
* test: add multiple concurrent peers test for management service
* chore: remove unused test
* fix: reduce the amount peers for a concurrent peer update test

Co-authored-by: braginini <m.bragin@wiretrustee.com>
This commit is contained in:
Mikhail Bragin
2021-07-22 10:28:00 +02:00
committed by GitHub
parent d27eb317aa
commit 079d35eada
12 changed files with 974 additions and 121 deletions

View File

@@ -7,6 +7,7 @@
package proto
import (
timestamp "github.com/golang/protobuf/ptypes/timestamp"
protoreflect "google.golang.org/protobuf/reflect/protoreflect"
protoimpl "google.golang.org/protobuf/runtime/protoimpl"
reflect "reflect"
@@ -20,6 +21,149 @@ const (
_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
)
type EncryptedMessage struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
// Wireguard public key
WgPubKey string `protobuf:"bytes,1,opt,name=wgPubKey,proto3" json:"wgPubKey,omitempty"`
// encrypted message Body
Body []byte `protobuf:"bytes,2,opt,name=body,proto3" json:"body,omitempty"`
}
func (x *EncryptedMessage) Reset() {
*x = EncryptedMessage{}
if protoimpl.UnsafeEnabled {
mi := &file_management_proto_msgTypes[0]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
}
func (x *EncryptedMessage) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*EncryptedMessage) ProtoMessage() {}
func (x *EncryptedMessage) ProtoReflect() protoreflect.Message {
mi := &file_management_proto_msgTypes[0]
if protoimpl.UnsafeEnabled && x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
ms.StoreMessageInfo(mi)
}
return ms
}
return mi.MessageOf(x)
}
// Deprecated: Use EncryptedMessage.ProtoReflect.Descriptor instead.
func (*EncryptedMessage) Descriptor() ([]byte, []int) {
return file_management_proto_rawDescGZIP(), []int{0}
}
func (x *EncryptedMessage) GetWgPubKey() string {
if x != nil {
return x.WgPubKey
}
return ""
}
func (x *EncryptedMessage) GetBody() []byte {
if x != nil {
return x.Body
}
return nil
}
type SyncRequest struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
}
func (x *SyncRequest) Reset() {
*x = SyncRequest{}
if protoimpl.UnsafeEnabled {
mi := &file_management_proto_msgTypes[1]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
}
func (x *SyncRequest) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*SyncRequest) ProtoMessage() {}
func (x *SyncRequest) ProtoReflect() protoreflect.Message {
mi := &file_management_proto_msgTypes[1]
if protoimpl.UnsafeEnabled && x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
ms.StoreMessageInfo(mi)
}
return ms
}
return mi.MessageOf(x)
}
// Deprecated: Use SyncRequest.ProtoReflect.Descriptor instead.
func (*SyncRequest) Descriptor() ([]byte, []int) {
return file_management_proto_rawDescGZIP(), []int{1}
}
type SyncResponse struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
// A list of peers available
Peers []string `protobuf:"bytes,1,rep,name=peers,proto3" json:"peers,omitempty"`
}
func (x *SyncResponse) Reset() {
*x = SyncResponse{}
if protoimpl.UnsafeEnabled {
mi := &file_management_proto_msgTypes[2]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
}
func (x *SyncResponse) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*SyncResponse) ProtoMessage() {}
func (x *SyncResponse) ProtoReflect() protoreflect.Message {
mi := &file_management_proto_msgTypes[2]
if protoimpl.UnsafeEnabled && x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
ms.StoreMessageInfo(mi)
}
return ms
}
return mi.MessageOf(x)
}
// Deprecated: Use SyncResponse.ProtoReflect.Descriptor instead.
func (*SyncResponse) Descriptor() ([]byte, []int) {
return file_management_proto_rawDescGZIP(), []int{2}
}
func (x *SyncResponse) GetPeers() []string {
if x != nil {
return x.Peers
}
return nil
}
type RegisterPeerRequest struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
@@ -34,7 +178,7 @@ type RegisterPeerRequest struct {
func (x *RegisterPeerRequest) Reset() {
*x = RegisterPeerRequest{}
if protoimpl.UnsafeEnabled {
mi := &file_management_proto_msgTypes[0]
mi := &file_management_proto_msgTypes[3]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
@@ -47,7 +191,7 @@ func (x *RegisterPeerRequest) String() string {
func (*RegisterPeerRequest) ProtoMessage() {}
func (x *RegisterPeerRequest) ProtoReflect() protoreflect.Message {
mi := &file_management_proto_msgTypes[0]
mi := &file_management_proto_msgTypes[3]
if protoimpl.UnsafeEnabled && x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
@@ -60,7 +204,7 @@ func (x *RegisterPeerRequest) ProtoReflect() protoreflect.Message {
// Deprecated: Use RegisterPeerRequest.ProtoReflect.Descriptor instead.
func (*RegisterPeerRequest) Descriptor() ([]byte, []int) {
return file_management_proto_rawDescGZIP(), []int{0}
return file_management_proto_rawDescGZIP(), []int{3}
}
func (x *RegisterPeerRequest) GetKey() string {
@@ -86,7 +230,7 @@ type RegisterPeerResponse struct {
func (x *RegisterPeerResponse) Reset() {
*x = RegisterPeerResponse{}
if protoimpl.UnsafeEnabled {
mi := &file_management_proto_msgTypes[1]
mi := &file_management_proto_msgTypes[4]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
@@ -99,7 +243,7 @@ func (x *RegisterPeerResponse) String() string {
func (*RegisterPeerResponse) ProtoMessage() {}
func (x *RegisterPeerResponse) ProtoReflect() protoreflect.Message {
mi := &file_management_proto_msgTypes[1]
mi := &file_management_proto_msgTypes[4]
if protoimpl.UnsafeEnabled && x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
@@ -112,7 +256,64 @@ func (x *RegisterPeerResponse) ProtoReflect() protoreflect.Message {
// Deprecated: Use RegisterPeerResponse.ProtoReflect.Descriptor instead.
func (*RegisterPeerResponse) Descriptor() ([]byte, []int) {
return file_management_proto_rawDescGZIP(), []int{1}
return file_management_proto_rawDescGZIP(), []int{4}
}
type ServerKeyResponse struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
// Server's Wireguard public key
Key string `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
// Key expiration timestamp after which the key should be fetched again by the client
ExpiresAt *timestamp.Timestamp `protobuf:"bytes,2,opt,name=expiresAt,proto3" json:"expiresAt,omitempty"`
}
func (x *ServerKeyResponse) Reset() {
*x = ServerKeyResponse{}
if protoimpl.UnsafeEnabled {
mi := &file_management_proto_msgTypes[5]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
}
func (x *ServerKeyResponse) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*ServerKeyResponse) ProtoMessage() {}
func (x *ServerKeyResponse) ProtoReflect() protoreflect.Message {
mi := &file_management_proto_msgTypes[5]
if protoimpl.UnsafeEnabled && x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
ms.StoreMessageInfo(mi)
}
return ms
}
return mi.MessageOf(x)
}
// Deprecated: Use ServerKeyResponse.ProtoReflect.Descriptor instead.
func (*ServerKeyResponse) Descriptor() ([]byte, []int) {
return file_management_proto_rawDescGZIP(), []int{5}
}
func (x *ServerKeyResponse) GetKey() string {
if x != nil {
return x.Key
}
return ""
}
func (x *ServerKeyResponse) GetExpiresAt() *timestamp.Timestamp {
if x != nil {
return x.ExpiresAt
}
return nil
}
type Empty struct {
@@ -124,7 +325,7 @@ type Empty struct {
func (x *Empty) Reset() {
*x = Empty{}
if protoimpl.UnsafeEnabled {
mi := &file_management_proto_msgTypes[2]
mi := &file_management_proto_msgTypes[6]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
@@ -137,7 +338,7 @@ func (x *Empty) String() string {
func (*Empty) ProtoMessage() {}
func (x *Empty) ProtoReflect() protoreflect.Message {
mi := &file_management_proto_msgTypes[2]
mi := &file_management_proto_msgTypes[6]
if protoimpl.UnsafeEnabled && x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
@@ -150,32 +351,56 @@ func (x *Empty) ProtoReflect() protoreflect.Message {
// Deprecated: Use Empty.ProtoReflect.Descriptor instead.
func (*Empty) Descriptor() ([]byte, []int) {
return file_management_proto_rawDescGZIP(), []int{2}
return file_management_proto_rawDescGZIP(), []int{6}
}
var File_management_proto protoreflect.FileDescriptor
var file_management_proto_rawDesc = []byte{
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}
var (
@@ -190,22 +415,32 @@ func file_management_proto_rawDescGZIP() []byte {
return file_management_proto_rawDescData
}
var file_management_proto_msgTypes = make([]protoimpl.MessageInfo, 3)
var file_management_proto_msgTypes = make([]protoimpl.MessageInfo, 7)
var file_management_proto_goTypes = []interface{}{
(*RegisterPeerRequest)(nil), // 0: management.RegisterPeerRequest
(*RegisterPeerResponse)(nil), // 1: management.RegisterPeerResponse
(*Empty)(nil), // 2: management.Empty
(*EncryptedMessage)(nil), // 0: management.EncryptedMessage
(*SyncRequest)(nil), // 1: management.SyncRequest
(*SyncResponse)(nil), // 2: management.SyncResponse
(*RegisterPeerRequest)(nil), // 3: management.RegisterPeerRequest
(*RegisterPeerResponse)(nil), // 4: management.RegisterPeerResponse
(*ServerKeyResponse)(nil), // 5: management.ServerKeyResponse
(*Empty)(nil), // 6: management.Empty
(*timestamp.Timestamp)(nil), // 7: google.protobuf.Timestamp
}
var file_management_proto_depIdxs = []int32{
0, // 0: management.ManagementService.RegisterPeer:input_type -> management.RegisterPeerRequest
2, // 1: management.ManagementService.isHealthy:input_type -> management.Empty
1, // 2: management.ManagementService.RegisterPeer:output_type -> management.RegisterPeerResponse
2, // 3: management.ManagementService.isHealthy:output_type -> management.Empty
2, // [2:4] is the sub-list for method output_type
0, // [0:2] is the sub-list for method input_type
0, // [0:0] is the sub-list for extension type_name
0, // [0:0] is the sub-list for extension extendee
0, // [0:0] is the sub-list for field type_name
7, // 0: management.ServerKeyResponse.expiresAt:type_name -> google.protobuf.Timestamp
3, // 1: management.ManagementService.RegisterPeer:input_type -> management.RegisterPeerRequest
0, // 2: management.ManagementService.Sync:input_type -> management.EncryptedMessage
6, // 3: management.ManagementService.GetServerKey:input_type -> management.Empty
6, // 4: management.ManagementService.isHealthy:input_type -> management.Empty
4, // 5: management.ManagementService.RegisterPeer:output_type -> management.RegisterPeerResponse
0, // 6: management.ManagementService.Sync:output_type -> management.EncryptedMessage
5, // 7: management.ManagementService.GetServerKey:output_type -> management.ServerKeyResponse
6, // 8: management.ManagementService.isHealthy:output_type -> management.Empty
5, // [5:9] is the sub-list for method output_type
1, // [1:5] is the sub-list for method input_type
1, // [1:1] is the sub-list for extension type_name
1, // [1:1] is the sub-list for extension extendee
0, // [0:1] is the sub-list for field type_name
}
func init() { file_management_proto_init() }
@@ -215,7 +450,7 @@ func file_management_proto_init() {
}
if !protoimpl.UnsafeEnabled {
file_management_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
switch v := v.(*RegisterPeerRequest); i {
switch v := v.(*EncryptedMessage); i {
case 0:
return &v.state
case 1:
@@ -227,7 +462,7 @@ func file_management_proto_init() {
}
}
file_management_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
switch v := v.(*RegisterPeerResponse); i {
switch v := v.(*SyncRequest); i {
case 0:
return &v.state
case 1:
@@ -239,6 +474,54 @@ func file_management_proto_init() {
}
}
file_management_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
switch v := v.(*SyncResponse); i {
case 0:
return &v.state
case 1:
return &v.sizeCache
case 2:
return &v.unknownFields
default:
return nil
}
}
file_management_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
switch v := v.(*RegisterPeerRequest); i {
case 0:
return &v.state
case 1:
return &v.sizeCache
case 2:
return &v.unknownFields
default:
return nil
}
}
file_management_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
switch v := v.(*RegisterPeerResponse); i {
case 0:
return &v.state
case 1:
return &v.sizeCache
case 2:
return &v.unknownFields
default:
return nil
}
}
file_management_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
switch v := v.(*ServerKeyResponse); i {
case 0:
return &v.state
case 1:
return &v.sizeCache
case 2:
return &v.unknownFields
default:
return nil
}
}
file_management_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
switch v := v.(*Empty); i {
case 0:
return &v.state
@@ -257,7 +540,7 @@ func file_management_proto_init() {
GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
RawDescriptor: file_management_proto_rawDesc,
NumEnums: 0,
NumMessages: 3,
NumMessages: 7,
NumExtensions: 0,
NumServices: 1,
},

View File

@@ -1,5 +1,7 @@
syntax = "proto3";
import "google/protobuf/timestamp.proto";
option go_package = "/proto";
package management;
@@ -8,10 +10,36 @@ service ManagementService {
rpc RegisterPeer(RegisterPeerRequest) returns (RegisterPeerResponse) {}
// Sync enables peer synchronization. Each peer that is connected to this stream will receive updates from the server.
// For example, if a new peer has been added to an account all other connected peers will receive this peer's Wireguard public key as an update
// The initial SyncResponse contains all of the available peers so the local state can be refreshed
rpc Sync(EncryptedMessage) returns (stream EncryptedMessage) {}
// Exposes a Wireguard public key of the Management service.
// This key is used to support message encryption between client and server
rpc GetServerKey(Empty) returns (ServerKeyResponse) {}
// health check endpoint
rpc isHealthy(Empty) returns (Empty) {}
}
message EncryptedMessage {
// Wireguard public key
string wgPubKey = 1;
// encrypted message Body
bytes body = 2;
}
message SyncRequest {
}
message SyncResponse {
// A list of peers available
repeated string peers = 1;
}
message RegisterPeerRequest {
// Wireguard public key
string key = 1;
@@ -24,6 +52,13 @@ message RegisterPeerResponse {
}
message ServerKeyResponse {
// Server's Wireguard public key
string key = 1;
// Key expiration timestamp after which the key should be fetched again by the client
google.protobuf.Timestamp expiresAt = 2;
}
message Empty {
}

View File

@@ -19,6 +19,13 @@ const _ = grpc.SupportPackageIsVersion7
// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
type ManagementServiceClient interface {
RegisterPeer(ctx context.Context, in *RegisterPeerRequest, opts ...grpc.CallOption) (*RegisterPeerResponse, error)
// Sync enables peer synchronization. Each peer that is connected to this stream will receive updates from the server.
// For example, if a new peer has been added to an account all other connected peers will receive this peer's Wireguard public key as an update
// The initial SyncResponse contains all of the available peers so the local state can be refreshed
Sync(ctx context.Context, in *EncryptedMessage, opts ...grpc.CallOption) (ManagementService_SyncClient, error)
// Exposes a Wireguard public key of the Management service.
// This key is used to support message encryption between client and server
GetServerKey(ctx context.Context, in *Empty, opts ...grpc.CallOption) (*ServerKeyResponse, error)
// health check endpoint
IsHealthy(ctx context.Context, in *Empty, opts ...grpc.CallOption) (*Empty, error)
}
@@ -40,6 +47,47 @@ func (c *managementServiceClient) RegisterPeer(ctx context.Context, in *Register
return out, nil
}
func (c *managementServiceClient) Sync(ctx context.Context, in *EncryptedMessage, opts ...grpc.CallOption) (ManagementService_SyncClient, error) {
stream, err := c.cc.NewStream(ctx, &ManagementService_ServiceDesc.Streams[0], "/management.ManagementService/Sync", opts...)
if err != nil {
return nil, err
}
x := &managementServiceSyncClient{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 ManagementService_SyncClient interface {
Recv() (*EncryptedMessage, error)
grpc.ClientStream
}
type managementServiceSyncClient struct {
grpc.ClientStream
}
func (x *managementServiceSyncClient) Recv() (*EncryptedMessage, error) {
m := new(EncryptedMessage)
if err := x.ClientStream.RecvMsg(m); err != nil {
return nil, err
}
return m, nil
}
func (c *managementServiceClient) GetServerKey(ctx context.Context, in *Empty, opts ...grpc.CallOption) (*ServerKeyResponse, error) {
out := new(ServerKeyResponse)
err := c.cc.Invoke(ctx, "/management.ManagementService/GetServerKey", in, out, opts...)
if err != nil {
return nil, err
}
return out, nil
}
func (c *managementServiceClient) IsHealthy(ctx context.Context, in *Empty, opts ...grpc.CallOption) (*Empty, error) {
out := new(Empty)
err := c.cc.Invoke(ctx, "/management.ManagementService/isHealthy", in, out, opts...)
@@ -54,6 +102,13 @@ func (c *managementServiceClient) IsHealthy(ctx context.Context, in *Empty, opts
// for forward compatibility
type ManagementServiceServer interface {
RegisterPeer(context.Context, *RegisterPeerRequest) (*RegisterPeerResponse, error)
// Sync enables peer synchronization. Each peer that is connected to this stream will receive updates from the server.
// For example, if a new peer has been added to an account all other connected peers will receive this peer's Wireguard public key as an update
// The initial SyncResponse contains all of the available peers so the local state can be refreshed
Sync(*EncryptedMessage, ManagementService_SyncServer) error
// Exposes a Wireguard public key of the Management service.
// This key is used to support message encryption between client and server
GetServerKey(context.Context, *Empty) (*ServerKeyResponse, error)
// health check endpoint
IsHealthy(context.Context, *Empty) (*Empty, error)
mustEmbedUnimplementedManagementServiceServer()
@@ -66,6 +121,12 @@ type UnimplementedManagementServiceServer struct {
func (UnimplementedManagementServiceServer) RegisterPeer(context.Context, *RegisterPeerRequest) (*RegisterPeerResponse, error) {
return nil, status.Errorf(codes.Unimplemented, "method RegisterPeer not implemented")
}
func (UnimplementedManagementServiceServer) Sync(*EncryptedMessage, ManagementService_SyncServer) error {
return status.Errorf(codes.Unimplemented, "method Sync not implemented")
}
func (UnimplementedManagementServiceServer) GetServerKey(context.Context, *Empty) (*ServerKeyResponse, error) {
return nil, status.Errorf(codes.Unimplemented, "method GetServerKey not implemented")
}
func (UnimplementedManagementServiceServer) IsHealthy(context.Context, *Empty) (*Empty, error) {
return nil, status.Errorf(codes.Unimplemented, "method IsHealthy not implemented")
}
@@ -100,6 +161,45 @@ func _ManagementService_RegisterPeer_Handler(srv interface{}, ctx context.Contex
return interceptor(ctx, in, info, handler)
}
func _ManagementService_Sync_Handler(srv interface{}, stream grpc.ServerStream) error {
m := new(EncryptedMessage)
if err := stream.RecvMsg(m); err != nil {
return err
}
return srv.(ManagementServiceServer).Sync(m, &managementServiceSyncServer{stream})
}
type ManagementService_SyncServer interface {
Send(*EncryptedMessage) error
grpc.ServerStream
}
type managementServiceSyncServer struct {
grpc.ServerStream
}
func (x *managementServiceSyncServer) Send(m *EncryptedMessage) error {
return x.ServerStream.SendMsg(m)
}
func _ManagementService_GetServerKey_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(Empty)
if err := dec(in); err != nil {
return nil, err
}
if interceptor == nil {
return srv.(ManagementServiceServer).GetServerKey(ctx, in)
}
info := &grpc.UnaryServerInfo{
Server: srv,
FullMethod: "/management.ManagementService/GetServerKey",
}
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
return srv.(ManagementServiceServer).GetServerKey(ctx, req.(*Empty))
}
return interceptor(ctx, in, info, handler)
}
func _ManagementService_IsHealthy_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(Empty)
if err := dec(in); err != nil {
@@ -129,11 +229,21 @@ var ManagementService_ServiceDesc = grpc.ServiceDesc{
MethodName: "RegisterPeer",
Handler: _ManagementService_RegisterPeer_Handler,
},
{
MethodName: "GetServerKey",
Handler: _ManagementService_GetServerKey_Handler,
},
{
MethodName: "isHealthy",
Handler: _ManagementService_IsHealthy_Handler,
},
},
Streams: []grpc.StreamDesc{},
Streams: []grpc.StreamDesc{
{
StreamName: "Sync",
Handler: _ManagementService_Sync_Handler,
ServerStreams: true,
},
},
Metadata: "management.proto",
}