add missing file

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

generate.go

@@ -0,0 +1,4 @@
+package grpc
+
+//go:generate go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@latest
+//go:generate sh -c "protoc -I./proto -I$(go list -f '{{ .Dir }}' -m go.unistack.org/micro-proto/v3) -I. --go-grpc_out=paths=source_relative:./proto --go_out=paths=source_relative:./proto proto/test.proto"

go.mod

@@ -4,14 +4,14 @@ go 1.20
 
 require (
 	github.com/golang/protobuf v1.5.4
-	go.unistack.org/micro/v3 v3.10.52
-	golang.org/x/net v0.22.0
-	google.golang.org/grpc v1.62.1
+	go.unistack.org/micro/v3 v3.10.54
+	golang.org/x/net v0.24.0
+	google.golang.org/grpc v1.63.0
 	google.golang.org/protobuf v1.33.0
 )
 
 require (
-	golang.org/x/sys v0.18.0 // indirect
+	golang.org/x/sys v0.19.0 // indirect
 	golang.org/x/text v0.14.0 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20240314234333-6e1732d8331c // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20240401170217-c3f982113cda // indirect
 )

go.sum

@@ -9,14 +9,20 @@ go.unistack.org/micro/v3 v3.10.42 h1:A0nA6WT6wNq5fyQyzliX70Bj5/SGj5kadLSOySX4hro
 go.unistack.org/micro/v3 v3.10.42/go.mod h1:CSmEf5ddmft94MyKHnUSMM0W5dpmmTVbgImbgQWV5Ak=
 go.unistack.org/micro/v3 v3.10.52 h1:6LlAvLLlf+3JLCEQEVNQWi7DXCoI1ocuOqqoEPj5S+k=
 go.unistack.org/micro/v3 v3.10.52/go.mod h1:erMgt3Bl7vQQ0e9UpQyR5NlLiZ9pKeEJ9+1tfYFaqUg=
+go.unistack.org/micro/v3 v3.10.54 h1:3qbv7jg+wpcYG/nJXzE/GEIsM8i5UdpytL2cNE8i3y0=
+go.unistack.org/micro/v3 v3.10.54/go.mod h1:erMgt3Bl7vQQ0e9UpQyR5NlLiZ9pKeEJ9+1tfYFaqUg=
 golang.org/x/net v0.17.0 h1:pVaXccu2ozPjCXewfr1S7xza/zcXTity9cCdXQYSjIM=
 golang.org/x/net v0.17.0/go.mod h1:NxSsAGuq816PNPmqtQdLE42eU2Fs7NoRIZrHJAlaCOE=
 golang.org/x/net v0.22.0 h1:9sGLhx7iRIHEiX0oAJ3MRZMUCElJgy7Br1nO+AMN3Tc=
 golang.org/x/net v0.22.0/go.mod h1:JKghWKKOSdJwpW2GEx0Ja7fmaKnMsbu+MWVZTokSYmg=
+golang.org/x/net v0.24.0 h1:1PcaxkF854Fu3+lvBIx5SYn9wRlBzzcnHZSiaFFAb0w=
+golang.org/x/net v0.24.0/go.mod h1:2Q7sJY5mzlzWjKtYUEXSlBWCdyaioyXzRB2RtU8KVE8=
 golang.org/x/sys v0.13.0 h1:Af8nKPmuFypiUBjVoU9V20FiaFXOcuZI21p0ycVYYGE=
 golang.org/x/sys v0.13.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.18.0 h1:DBdB3niSjOA/O0blCZBqDefyWNYveAYMNF1Wum0DYQ4=
 golang.org/x/sys v0.18.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.19.0 h1:q5f1RH2jigJ1MoAWp2KTp3gm5zAGFUTarQZ5U386+4o=
+golang.org/x/sys v0.19.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/text v0.13.0 h1:ablQoSUd0tRdKxZewP80B+BaqeKJuVhuRxj/dkrun3k=
 golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
 golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
@@ -26,10 +32,14 @@ google.golang.org/genproto/googleapis/rpc v0.0.0-20231030173426-d783a09b4405 h1:
 google.golang.org/genproto/googleapis/rpc v0.0.0-20231030173426-d783a09b4405/go.mod h1:67X1fPuzjcrkymZzZV1vvkFeTn2Rvc6lYF9MYFGCcwE=
 google.golang.org/genproto/googleapis/rpc v0.0.0-20240314234333-6e1732d8331c h1:lfpJ/2rWPa/kJgxyyXM8PrNnfCzcmxJ265mADgwmvLI=
 google.golang.org/genproto/googleapis/rpc v0.0.0-20240314234333-6e1732d8331c/go.mod h1:WtryC6hu0hhx87FDGxWCDptyssuo68sk10vYjF+T9fY=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20240401170217-c3f982113cda h1:LI5DOvAxUPMv/50agcLLoo+AdWc1irS9Rzz4vPuD1V4=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20240401170217-c3f982113cda/go.mod h1:WtryC6hu0hhx87FDGxWCDptyssuo68sk10vYjF+T9fY=
 google.golang.org/grpc v1.59.0 h1:Z5Iec2pjwb+LEOqzpB2MR12/eKFhDPhuqW91O+4bwUk=
 google.golang.org/grpc v1.59.0/go.mod h1:aUPDwccQo6OTjy7Hct4AfBPD1GptF4fyUjIkQ9YtF98=
 google.golang.org/grpc v1.62.1 h1:B4n+nfKzOICUXMgyrNd19h/I9oH0L1pizfk1d4zSgTk=
 google.golang.org/grpc v1.62.1/go.mod h1:IWTG0VlJLCh1SkC58F7np9ka9mx/WNkjl4PGJaiq+QE=
+google.golang.org/grpc v1.63.0 h1:WjKe+dnvABXyPJMD7KDNLxtoGk5tgk+YFWN6cBWjZE8=
+google.golang.org/grpc v1.63.0/go.mod h1:WAX/8DgncnokcFUldAxq7GeB5DXHDbMF+lLvDomNkRA=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
 google.golang.org/protobuf v1.31.0 h1:g0LDEJHgrBl9N9r17Ru3sqWhkIx2NB67okBHPwC7hs8=

grpc.go

@@ -13,6 +13,9 @@ import (
 	"sync"
 	"time"
 
+	greflection "google.golang.org/grpc/reflection"
+	reflectionv1pb "google.golang.org/grpc/reflection/grpc_reflection_v1"
+
 	// nolint: staticcheck
 	oldproto "github.com/golang/protobuf/proto"
 	"go.unistack.org/micro/v3/broker"
@@ -20,7 +23,9 @@ import (
 	"go.unistack.org/micro/v3/errors"
 	"go.unistack.org/micro/v3/logger"
 	"go.unistack.org/micro/v3/metadata"
+	"go.unistack.org/micro/v3/meter"
 	"go.unistack.org/micro/v3/register"
+	"go.unistack.org/micro/v3/semconv"
 	"go.unistack.org/micro/v3/server"
 	msync "go.unistack.org/micro/v3/sync"
 	"golang.org/x/net/netutil"
@@ -72,6 +77,8 @@ func newServer(opts ...server.Option) *Server {
 		exit:        make(chan chan error),
 	}
 
+	g.opts.Meter = g.opts.Meter.Clone(meter.Labels("type", "grpc"))
+
 	return g
 }
 
@@ -152,8 +159,15 @@ func (g *Server) configure(opts ...server.Option) error {
 	}
 	g.srv = grpc.NewServer(gopts...)
 
-	if v, ok := g.opts.Context.Value(reflectionKey{}).(bool); ok {
-		g.reflection = v
+	if v, ok := g.opts.Context.Value(reflectionKey{}).(Reflector); ok {
+		reflectionv1pb.RegisterServerReflectionServer(
+			g.srv,
+			greflection.NewServerV1(greflection.ServerOptions{
+				Services:           v,
+				DescriptorResolver: v,
+				ExtensionResolver:  v,
+			}),
+		)
 	}
 
 	if h, ok := g.opts.Context.Value(unknownServiceHandlerKey{}).(grpc.StreamHandler); ok {
@@ -191,14 +205,24 @@ func (g *Server) getGrpcOptions() []grpc.ServerOption {
 	return opts
 }
 
-func (g *Server) handler(srv interface{}, stream grpc.ServerStream) (err error) {
+func (g *Server) handler(srv interface{}, stream grpc.ServerStream) error {
 	fullMethod, ok := grpc.MethodFromServerStream(stream)
 	if !ok {
 		return status.Errorf(codes.Internal, "method does not exist in context")
 	}
 
+	ts := time.Now()
+	g.opts.Meter.Counter(semconv.ServerRequestInflight, "endpoint", fullMethod).Inc()
+	defer func() {
+		te := time.Since(ts)
+		g.opts.Meter.Summary(semconv.ServerRequestLatencyMicroseconds, "endpoint", fullMethod).Update(te.Seconds())
+		g.opts.Meter.Histogram(semconv.ServerRequestDurationSeconds, "endpoint", fullMethod).Update(te.Seconds())
+		g.opts.Meter.Counter(semconv.ServerRequestInflight, "endpoint", fullMethod).Dec()
+	}()
+
 	serviceName, methodName, err := serviceMethod(fullMethod)
 	if err != nil {
+		g.opts.Meter.Counter(semconv.ServerRequestTotal, "endpoint", fullMethod, "status", "failure", "code", strconv.Itoa(int(codes.InvalidArgument))).Inc()
 		return status.New(codes.InvalidArgument, err.Error()).Err()
 	}
 
@@ -268,7 +292,8 @@ func (g *Server) handler(srv interface{}, stream grpc.ServerStream) (err error)
 
 	// set the timeout if we have it
 	if len(td) > 0 {
-		if n, err := strconv.ParseUint(td, 10, 64); err == nil {
+		var n uint64
+		if n, err = strconv.ParseUint(td, 10, 64); err == nil {
 			var cancel context.CancelFunc
 			ctx, cancel = context.WithTimeout(ctx, time.Duration(n))
 			defer cancel()
@@ -279,32 +304,11 @@ func (g *Server) handler(srv interface{}, stream grpc.ServerStream) (err error)
 	svc := g.rpc.serviceMap[serviceName]
 	g.rpc.mu.RUnlock()
 
-	/*
-		if svc == nil && g.reflection && methodName == "ServerReflectionInfo" {
-			rfl := &ServerReflection{srv: g.srv, s: &serverReflectionServer{s: g.srv}}
-			svc = &service{}
-			svc.typ = reflect.TypeOf(rfl)
-			svc.rcvr = reflect.ValueOf(rfl)
-			svc.name = reflect.Indirect(svc.rcvr).Type().Name()
-			svc.method = make(map[string]*methodType)
-			typ := reflect.TypeOf(rfl)
-			if me, ok := typ.MethodByName("ServerReflectionInfo"); ok {
-				g.rpc.mu.Lock()
-				ep, err := prepareEndpoint(me)
-				if ep != nil && err != nil {
-					svc.method["ServerReflectionInfo"] = ep
-				} else if err != nil {
-					return status.New(codes.Unimplemented, err.Error()).Err()
-				}
-				g.rpc.mu.Unlock()
-			}
-		}
-	*/
-
 	if svc == nil {
 		if g.unknownHandler != nil {
 			return g.unknownHandler(srv, stream)
 		}
+		g.opts.Meter.Counter(semconv.ServerRequestTotal, "endpoint", fullMethod, "status", "failure", "code", strconv.Itoa(int(codes.Unimplemented))).Inc()
 		return status.New(codes.Unimplemented, fmt.Sprintf("unknown service %s", serviceName)).Err()
 	}
 
@@ -313,16 +317,27 @@ func (g *Server) handler(srv interface{}, stream grpc.ServerStream) (err error)
 		if g.unknownHandler != nil {
 			return g.unknownHandler(srv, stream)
 		}
+		g.opts.Meter.Counter(semconv.ServerRequestTotal, "endpoint", fullMethod, "status", "failure", "code", strconv.Itoa(int(codes.Unimplemented))).Inc()
 		return status.New(codes.Unimplemented, fmt.Sprintf("unknown service method %s.%s", serviceName, methodName)).Err()
 	}
 
 	// process unary
 	if !mtype.stream {
-		return g.processRequest(ctx, stream, svc, mtype, ct)
+		err = g.processRequest(ctx, stream, svc, mtype, ct)
+	} else {
+		// process stream
+		err = g.processStream(ctx, stream, svc, mtype, ct)
 	}
 
-	// process stream
-	return g.processStream(ctx, stream, svc, mtype, ct)
+	st := status.Convert(err)
+
+	if st == nil || st.Code() == codes.OK {
+		g.opts.Meter.Counter(semconv.ServerRequestTotal, "endpoint", fullMethod, "status", "success", "code", strconv.Itoa(int(codes.OK))).Inc()
+	} else {
+		g.opts.Meter.Counter(semconv.ServerRequestTotal, "endpoint", fullMethod, "status", "failure", "code", strconv.Itoa(int(st.Code()))).Inc()
+	}
+
+	return err
 }
 
 func (g *Server) processRequest(ctx context.Context, stream grpc.ServerStream, service *service, mtype *methodType, ct string) error {

proto/test.pb.go

@@ -0,0 +1,208 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.26.0
+// 	protoc        v4.25.2
+// source: test.proto
+
+package testpb
+
+import (
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+type CallReq struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Data string `protobuf:"bytes,1,opt,name=data,proto3" json:"data,omitempty"`
+}
+
+func (x *CallReq) Reset() {
+	*x = CallReq{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_test_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *CallReq) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*CallReq) ProtoMessage() {}
+
+func (x *CallReq) ProtoReflect() protoreflect.Message {
+	mi := &file_test_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 CallReq.ProtoReflect.Descriptor instead.
+func (*CallReq) Descriptor() ([]byte, []int) {
+	return file_test_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *CallReq) GetData() string {
+	if x != nil {
+		return x.Data
+	}
+	return ""
+}
+
+type CallRsp struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Data string `protobuf:"bytes,1,opt,name=data,proto3" json:"data,omitempty"`
+}
+
+func (x *CallRsp) Reset() {
+	*x = CallRsp{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_test_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *CallRsp) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*CallRsp) ProtoMessage() {}
+
+func (x *CallRsp) ProtoReflect() protoreflect.Message {
+	mi := &file_test_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 CallRsp.ProtoReflect.Descriptor instead.
+func (*CallRsp) Descriptor() ([]byte, []int) {
+	return file_test_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *CallRsp) GetData() string {
+	if x != nil {
+		return x.Data
+	}
+	return ""
+}
+
+var File_test_proto protoreflect.FileDescriptor
+
+var file_test_proto_rawDesc = []byte{
+	0x0a, 0x0a, 0x74, 0x65, 0x73, 0x74, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x04, 0x74, 0x65,
+	0x73, 0x74, 0x22, 0x1d, 0x0a, 0x07, 0x43, 0x61, 0x6c, 0x6c, 0x52, 0x65, 0x71, 0x12, 0x12, 0x0a,
+	0x04, 0x64, 0x61, 0x74, 0x61, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x64, 0x61, 0x74,
+	0x61, 0x22, 0x1d, 0x0a, 0x07, 0x43, 0x61, 0x6c, 0x6c, 0x52, 0x73, 0x70, 0x12, 0x12, 0x0a, 0x04,
+	0x64, 0x61, 0x74, 0x61, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x64, 0x61, 0x74, 0x61,
+	0x32, 0x33, 0x0a, 0x0b, 0x54, 0x65, 0x73, 0x74, 0x53, 0x65, 0x72, 0x76, 0x69, 0x63, 0x65, 0x12,
+	0x24, 0x0a, 0x04, 0x43, 0x61, 0x6c, 0x6c, 0x12, 0x0d, 0x2e, 0x74, 0x65, 0x73, 0x74, 0x2e, 0x43,
+	0x61, 0x6c, 0x6c, 0x52, 0x65, 0x71, 0x1a, 0x0d, 0x2e, 0x74, 0x65, 0x73, 0x74, 0x2e, 0x43, 0x61,
+	0x6c, 0x6c, 0x52, 0x73, 0x70, 0x42, 0x0b, 0x5a, 0x09, 0x2e, 0x2f, 0x3b, 0x74, 0x65, 0x73, 0x74,
+	0x70, 0x62, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
+
+var (
+	file_test_proto_rawDescOnce sync.Once
+	file_test_proto_rawDescData = file_test_proto_rawDesc
+)
+
+func file_test_proto_rawDescGZIP() []byte {
+	file_test_proto_rawDescOnce.Do(func() {
+		file_test_proto_rawDescData = protoimpl.X.CompressGZIP(file_test_proto_rawDescData)
+	})
+	return file_test_proto_rawDescData
+}
+
+var file_test_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
+var file_test_proto_goTypes = []interface{}{
+	(*CallReq)(nil), // 0: test.CallReq
+	(*CallRsp)(nil), // 1: test.CallRsp
+}
+var file_test_proto_depIdxs = []int32{
+	0, // 0: test.TestService.Call:input_type -> test.CallReq
+	1, // 1: test.TestService.Call:output_type -> test.CallRsp
+	1, // [1:2] is the sub-list for method output_type
+	0, // [0:1] 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
+}
+
+func init() { file_test_proto_init() }
+func file_test_proto_init() {
+	if File_test_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_test_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*CallReq); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_test_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*CallRsp); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_test_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   2,
+			NumExtensions: 0,
+			NumServices:   1,
+		},
+		GoTypes:           file_test_proto_goTypes,
+		DependencyIndexes: file_test_proto_depIdxs,
+		MessageInfos:      file_test_proto_msgTypes,
+	}.Build()
+	File_test_proto = out.File
+	file_test_proto_rawDesc = nil
+	file_test_proto_goTypes = nil
+	file_test_proto_depIdxs = nil
+}

proto/test.proto

@@ -0,0 +1,18 @@
+syntax = "proto3";
+
+package test;
+
+option go_package = "./;testpb";
+
+
+service TestService {
+  rpc Call(CallReq) returns (CallRsp);
+}
+
+message CallReq {
+  string data = 1;
+}
+
+message CallRsp {
+  string data = 1;
+}

proto/test_grpc.pb.go

@@ -0,0 +1,109 @@
+// Code generated by protoc-gen-go-grpc. DO NOT EDIT.
+// versions:
+// - protoc-gen-go-grpc v1.3.0
+// - protoc             v4.25.2
+// source: test.proto
+
+package testpb
+
+import (
+	context "context"
+	grpc "google.golang.org/grpc"
+	codes "google.golang.org/grpc/codes"
+	status "google.golang.org/grpc/status"
+)
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+// Requires gRPC-Go v1.32.0 or later.
+const _ = grpc.SupportPackageIsVersion7
+
+const (
+	TestService_Call_FullMethodName = "/test.TestService/Call"
+)
+
+// TestServiceClient is the client API for TestService service.
+//
+// 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 TestServiceClient interface {
+	Call(ctx context.Context, in *CallReq, opts ...grpc.CallOption) (*CallRsp, error)
+}
+
+type testServiceClient struct {
+	cc grpc.ClientConnInterface
+}
+
+func NewTestServiceClient(cc grpc.ClientConnInterface) TestServiceClient {
+	return &testServiceClient{cc}
+}
+
+func (c *testServiceClient) Call(ctx context.Context, in *CallReq, opts ...grpc.CallOption) (*CallRsp, error) {
+	out := new(CallRsp)
+	err := c.cc.Invoke(ctx, TestService_Call_FullMethodName, in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// TestServiceServer is the server API for TestService service.
+// All implementations must embed UnimplementedTestServiceServer
+// for forward compatibility
+type TestServiceServer interface {
+	Call(context.Context, *CallReq) (*CallRsp, error)
+	mustEmbedUnimplementedTestServiceServer()
+}
+
+// UnimplementedTestServiceServer must be embedded to have forward compatible implementations.
+type UnimplementedTestServiceServer struct {
+}
+
+func (UnimplementedTestServiceServer) Call(context.Context, *CallReq) (*CallRsp, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Call not implemented")
+}
+func (UnimplementedTestServiceServer) mustEmbedUnimplementedTestServiceServer() {}
+
+// UnsafeTestServiceServer may be embedded to opt out of forward compatibility for this service.
+// Use of this interface is not recommended, as added methods to TestServiceServer will
+// result in compilation errors.
+type UnsafeTestServiceServer interface {
+	mustEmbedUnimplementedTestServiceServer()
+}
+
+func RegisterTestServiceServer(s grpc.ServiceRegistrar, srv TestServiceServer) {
+	s.RegisterService(&TestService_ServiceDesc, srv)
+}
+
+func _TestService_Call_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(CallReq)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(TestServiceServer).Call(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: TestService_Call_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(TestServiceServer).Call(ctx, req.(*CallReq))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+// TestService_ServiceDesc is the grpc.ServiceDesc for TestService service.
+// It's only intended for direct use with grpc.RegisterService,
+// and not to be introspected or modified (even as a copy)
+var TestService_ServiceDesc = grpc.ServiceDesc{
+	ServiceName: "test.TestService",
+	HandlerType: (*TestServiceServer)(nil),
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "Call",
+			Handler:    _TestService_Call_Handler,
+		},
+	},
+	Streams:  []grpc.StreamDesc{},
+	Metadata: "test.proto",
+}

reflection.go

@@ -14,10 +14,8 @@ type Reflector interface {
 const (
 	// ReflectV1ServiceName is the fully-qualified name of the v1 version of the reflection service.
 	ReflectV1ServiceName = "grpc.reflection.v1.ServerReflection"
-	// ReflectV1AlphaServiceName is the fully-qualified name of the v1alpha version of the reflection service.
-	ReflectV1AlphaServiceName = "grpc.reflection.v1alpha.ServerReflection"
-
-	ReflectServiceURLPathV1      = "/" + ReflectV1ServiceName + "/"
-	ReflectServiceURLPathV1Alpha = "/" + ReflectV1AlphaServiceName + "/"
-	ReflectMethodName            = "ServerReflectionInfo"
+	// ReflectServiceURLPathV1 is the full path for reflection service endpoint
+	ReflectServiceURLPathV1 = "/" + ReflectV1ServiceName + "/"
+	// ReflectMethodName is the reflection service name
+	ReflectMethodName = "ServerReflectionInfo"
 )

reflection_test.go

@@ -0,0 +1,62 @@
+package grpc
+
+import (
+	"fmt"
+	"testing"
+
+	_ "go.unistack.org/micro-server-grpc/v3/proto"
+	"go.unistack.org/micro/v3/server"
+	"google.golang.org/grpc"
+	"google.golang.org/protobuf/reflect/protoreflect"
+	"google.golang.org/protobuf/reflect/protoregistry"
+)
+
+type reflector struct{}
+
+func (r *reflector) FindFileByPath(path string) (protoreflect.FileDescriptor, error) {
+	fd, err := protoregistry.GlobalFiles.FindFileByPath(path)
+	if err != nil {
+		fmt.Printf("err: %v\n", err)
+		return nil, err
+	}
+	return fd, nil
+}
+
+func (r *reflector) FindDescriptorByName(name protoreflect.FullName) (protoreflect.Descriptor, error) {
+	fd, err := protoregistry.GlobalFiles.FindDescriptorByName(name)
+	if err != nil {
+		return nil, err
+	}
+	return fd, nil
+}
+
+func (r *reflector) GetServiceInfo() map[string]grpc.ServiceInfo {
+	fmt.Printf("GetServiceInfo\n")
+	return nil
+}
+
+func (r *reflector) FindExtensionByName(field protoreflect.FullName) (protoreflect.ExtensionType, error) {
+	fmt.Printf("FindExtensionByName field %#+v\n", field)
+	return nil, nil
+}
+
+func (r *reflector) FindExtensionByNumber(message protoreflect.FullName, field protoreflect.FieldNumber) (protoreflect.ExtensionType, error) {
+	fmt.Printf("FindExtensionByNumber message %#+v field %#+v\n", message, field)
+	return nil, nil
+}
+
+func (r *reflector) RangeExtensionsByMessage(message protoreflect.FullName, f func(protoreflect.ExtensionType) bool) {
+	fmt.Printf("RangeExtensionsByMessage\n")
+}
+
+func TestReflector(t *testing.T) {
+	srv := NewServer(Reflection(&reflector{}), server.Address(":12345"))
+	if err := srv.Init(); err != nil {
+		t.Fatal(err)
+	}
+	if err := srv.Start(); err != nil {
+		t.Fatal(err)
+	}
+	t.Logf("addr %s", srv.Options().Address)
+	select {}
+}

request.go

@@ -8,10 +8,7 @@ import (
 	"go.unistack.org/micro/v3/server"
 )
 
-var (
-	_ server.Request = &rpcRequest{}
-	_ server.Message = &rpcMessage{}
-)
+var _ server.Request = &rpcRequest{}
 
 type rpcRequest struct {
 	rw          io.ReadWriter
@@ -25,14 +22,6 @@ type rpcRequest struct {
 	stream      bool
 }
 
-type rpcMessage struct {
-	payload     interface{}
-	codec       codec.Codec
-	header      metadata.Metadata
-	topic       string
-	contentType string
-}
-
 func (r *rpcRequest) ContentType() string {
 	return r.contentType
 }
@@ -72,23 +61,3 @@ func (r *rpcRequest) Stream() bool {
 func (r *rpcRequest) Body() interface{} {
 	return r.payload
 }
-
-func (r *rpcMessage) ContentType() string {
-	return r.contentType
-}
-
-func (r *rpcMessage) Topic() string {
-	return r.topic
-}
-
-func (r *rpcMessage) Body() interface{} {
-	return r.payload
-}
-
-func (r *rpcMessage) Header() metadata.Metadata {
-	return r.header
-}
-
-func (r *rpcMessage) Codec() codec.Codec {
-	return r.codec
-}

subscriber.go

@@ -7,11 +7,45 @@ import (
 	"strings"
 
 	"go.unistack.org/micro/v3/broker"
+	"go.unistack.org/micro/v3/codec"
+
+	// "go.unistack.org/micro/v3/errors"
+	// "go.unistack.org/micro/v3/logger"
 	"go.unistack.org/micro/v3/metadata"
 	"go.unistack.org/micro/v3/register"
 	"go.unistack.org/micro/v3/server"
 )
 
+var _ server.Message = &rpcMessage{}
+
+type rpcMessage struct {
+	payload     interface{}
+	codec       codec.Codec
+	header      metadata.Metadata
+	topic       string
+	contentType string
+}
+
+func (r *rpcMessage) ContentType() string {
+	return r.contentType
+}
+
+func (r *rpcMessage) Topic() string {
+	return r.topic
+}
+
+func (r *rpcMessage) Body() interface{} {
+	return r.payload
+}
+
+func (r *rpcMessage) Header() metadata.Metadata {
+	return r.header
+}
+
+func (r *rpcMessage) Codec() codec.Codec {
+	return r.codec
+}
+
 type handler struct {
 	reqType reflect.Type
 	ctxType reflect.Type
@@ -101,7 +135,6 @@ func newSubscriber(topic string, sub interface{}, opts ...server.SubscriberOptio
 
 func (g *Server) createSubHandler(sb *subscriber, opts server.Options) broker.Handler {
 	return func(p broker.Event) (err error) {
-
 		msg := p.Message()
 		// if we don't have headers, create empty map
 		if msg.Header == nil {