improve grpcx (#2522)

example/trace/grpc_with_db/client/client.go

@@ -1,9 +1,10 @@
 package main
 
 import (
+	"github.com/gogf/gf/contrib/registry/etcd/v2"
 	"github.com/gogf/gf/contrib/rpc/grpcx/v2"
 	"github.com/gogf/gf/contrib/trace/jaeger/v2"
-	"github.com/gogf/gf/example/trace/grpc_with_db/protocol/user"
+	"github.com/gogf/gf/example/trace/grpc_with_db/protobuf/user"
 	"github.com/gogf/gf/v2/frame/g"
 	"github.com/gogf/gf/v2/net/gtrace"
 	"github.com/gogf/gf/v2/os/gctx"
@@ -15,6 +16,8 @@ const (
 )
 
 func main() {
+	grpcx.Resolver.Register(etcd.New("127.0.0.1:2379"))
+
 	var ctx = gctx.New()
 	tp, err := jaeger.Init(ServiceName, JaegerUdpEndpoint)
 	if err != nil {

example/trace/grpc_with_db/client/config.yaml

@@ -1,6 +0,0 @@
-
-registry:
-  endpoints: ["127.0.0.1:2379"]
-
-
-

example/trace/grpc_with_db/protobuf/user/user.pb.go

@@ -0,0 +1,469 @@
+// protoc --gofast_out=plugins=grpc:. \
+// protocol/user/*.proto \
+// -I/Users/john/Workspace/Go/GOPATH/src
+
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.28.1
+// 	protoc        v3.21.12
+// source: user.proto
+
+package user
+
+import (
+	reflect "reflect"
+	sync "sync"
+
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+)
+
+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 InsertReq struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Name string `protobuf:"bytes,1,opt,name=Name,proto3" json:"Name,omitempty" v:"required#Please input user name."` // v: required#Please input user name.
+}
+
+func (x *InsertReq) Reset() {
+	*x = InsertReq{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_user_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *InsertReq) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*InsertReq) ProtoMessage() {}
+
+func (x *InsertReq) ProtoReflect() protoreflect.Message {
+	mi := &file_user_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 InsertReq.ProtoReflect.Descriptor instead.
+func (*InsertReq) Descriptor() ([]byte, []int) {
+	return file_user_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *InsertReq) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+type InsertRes struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Id int32 `protobuf:"varint,1,opt,name=Id,proto3" json:"Id,omitempty"`
+}
+
+func (x *InsertRes) Reset() {
+	*x = InsertRes{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_user_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *InsertRes) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*InsertRes) ProtoMessage() {}
+
+func (x *InsertRes) ProtoReflect() protoreflect.Message {
+	mi := &file_user_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 InsertRes.ProtoReflect.Descriptor instead.
+func (*InsertRes) Descriptor() ([]byte, []int) {
+	return file_user_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *InsertRes) GetId() int32 {
+	if x != nil {
+		return x.Id
+	}
+	return 0
+}
+
+type QueryReq struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Id int32 `protobuf:"varint,1,opt,name=Id,proto3" json:"Id,omitempty" v:"min:1#User id is required for querying."` // v: min:1#User id is required for querying.
+}
+
+func (x *QueryReq) Reset() {
+	*x = QueryReq{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_user_proto_msgTypes[2]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *QueryReq) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*QueryReq) ProtoMessage() {}
+
+func (x *QueryReq) ProtoReflect() protoreflect.Message {
+	mi := &file_user_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 QueryReq.ProtoReflect.Descriptor instead.
+func (*QueryReq) Descriptor() ([]byte, []int) {
+	return file_user_proto_rawDescGZIP(), []int{2}
+}
+
+func (x *QueryReq) GetId() int32 {
+	if x != nil {
+		return x.Id
+	}
+	return 0
+}
+
+type QueryRes struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Id   int32  `protobuf:"varint,1,opt,name=Id,proto3" json:"Id,omitempty"`
+	Name string `protobuf:"bytes,2,opt,name=Name,proto3" json:"Name,omitempty"`
+}
+
+func (x *QueryRes) Reset() {
+	*x = QueryRes{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_user_proto_msgTypes[3]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *QueryRes) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*QueryRes) ProtoMessage() {}
+
+func (x *QueryRes) ProtoReflect() protoreflect.Message {
+	mi := &file_user_proto_msgTypes[3]
+	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 QueryRes.ProtoReflect.Descriptor instead.
+func (*QueryRes) Descriptor() ([]byte, []int) {
+	return file_user_proto_rawDescGZIP(), []int{3}
+}
+
+func (x *QueryRes) GetId() int32 {
+	if x != nil {
+		return x.Id
+	}
+	return 0
+}
+
+func (x *QueryRes) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+type DeleteReq struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Id int32 `protobuf:"varint,1,opt,name=Id,proto3" json:"Id,omitempty" v:"min:1#User id is required for deleting."` // v:min:1#User id is required for deleting.
+}
+
+func (x *DeleteReq) Reset() {
+	*x = DeleteReq{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_user_proto_msgTypes[4]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DeleteReq) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*DeleteReq) ProtoMessage() {}
+
+func (x *DeleteReq) ProtoReflect() protoreflect.Message {
+	mi := &file_user_proto_msgTypes[4]
+	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 DeleteReq.ProtoReflect.Descriptor instead.
+func (*DeleteReq) Descriptor() ([]byte, []int) {
+	return file_user_proto_rawDescGZIP(), []int{4}
+}
+
+func (x *DeleteReq) GetId() int32 {
+	if x != nil {
+		return x.Id
+	}
+	return 0
+}
+
+type DeleteRes struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *DeleteRes) Reset() {
+	*x = DeleteRes{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_user_proto_msgTypes[5]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DeleteRes) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*DeleteRes) ProtoMessage() {}
+
+func (x *DeleteRes) ProtoReflect() protoreflect.Message {
+	mi := &file_user_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 DeleteRes.ProtoReflect.Descriptor instead.
+func (*DeleteRes) Descriptor() ([]byte, []int) {
+	return file_user_proto_rawDescGZIP(), []int{5}
+}
+
+var File_user_proto protoreflect.FileDescriptor
+
+var file_user_proto_rawDesc = []byte{
+	0x0a, 0x0a, 0x75, 0x73, 0x65, 0x72, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x04, 0x75, 0x73,
+	0x65, 0x72, 0x22, 0x1f, 0x0a, 0x09, 0x49, 0x6e, 0x73, 0x65, 0x72, 0x74, 0x52, 0x65, 0x71, 0x12,
+	0x12, 0x0a, 0x04, 0x4e, 0x61, 0x6d, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x4e,
+	0x61, 0x6d, 0x65, 0x22, 0x1b, 0x0a, 0x09, 0x49, 0x6e, 0x73, 0x65, 0x72, 0x74, 0x52, 0x65, 0x73,
+	0x12, 0x0e, 0x0a, 0x02, 0x49, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x05, 0x52, 0x02, 0x49, 0x64,
+	0x22, 0x1a, 0x0a, 0x08, 0x51, 0x75, 0x65, 0x72, 0x79, 0x52, 0x65, 0x71, 0x12, 0x0e, 0x0a, 0x02,
+	0x49, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x05, 0x52, 0x02, 0x49, 0x64, 0x22, 0x2e, 0x0a, 0x08,
+	0x51, 0x75, 0x65, 0x72, 0x79, 0x52, 0x65, 0x73, 0x12, 0x0e, 0x0a, 0x02, 0x49, 0x64, 0x18, 0x01,
+	0x20, 0x01, 0x28, 0x05, 0x52, 0x02, 0x49, 0x64, 0x12, 0x12, 0x0a, 0x04, 0x4e, 0x61, 0x6d, 0x65,
+	0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x4e, 0x61, 0x6d, 0x65, 0x22, 0x1b, 0x0a, 0x09,
+	0x44, 0x65, 0x6c, 0x65, 0x74, 0x65, 0x52, 0x65, 0x71, 0x12, 0x0e, 0x0a, 0x02, 0x49, 0x64, 0x18,
+	0x01, 0x20, 0x01, 0x28, 0x05, 0x52, 0x02, 0x49, 0x64, 0x22, 0x0b, 0x0a, 0x09, 0x44, 0x65, 0x6c,
+	0x65, 0x74, 0x65, 0x52, 0x65, 0x73, 0x32, 0x8d, 0x01, 0x0a, 0x04, 0x55, 0x73, 0x65, 0x72, 0x12,
+	0x2c, 0x0a, 0x06, 0x49, 0x6e, 0x73, 0x65, 0x72, 0x74, 0x12, 0x0f, 0x2e, 0x75, 0x73, 0x65, 0x72,
+	0x2e, 0x49, 0x6e, 0x73, 0x65, 0x72, 0x74, 0x52, 0x65, 0x71, 0x1a, 0x0f, 0x2e, 0x75, 0x73, 0x65,
+	0x72, 0x2e, 0x49, 0x6e, 0x73, 0x65, 0x72, 0x74, 0x52, 0x65, 0x73, 0x22, 0x00, 0x12, 0x29, 0x0a,
+	0x05, 0x51, 0x75, 0x65, 0x72, 0x79, 0x12, 0x0e, 0x2e, 0x75, 0x73, 0x65, 0x72, 0x2e, 0x51, 0x75,
+	0x65, 0x72, 0x79, 0x52, 0x65, 0x71, 0x1a, 0x0e, 0x2e, 0x75, 0x73, 0x65, 0x72, 0x2e, 0x51, 0x75,
+	0x65, 0x72, 0x79, 0x52, 0x65, 0x73, 0x22, 0x00, 0x12, 0x2c, 0x0a, 0x06, 0x44, 0x65, 0x6c, 0x65,
+	0x74, 0x65, 0x12, 0x0f, 0x2e, 0x75, 0x73, 0x65, 0x72, 0x2e, 0x44, 0x65, 0x6c, 0x65, 0x74, 0x65,
+	0x52, 0x65, 0x71, 0x1a, 0x0f, 0x2e, 0x75, 0x73, 0x65, 0x72, 0x2e, 0x44, 0x65, 0x6c, 0x65, 0x74,
+	0x65, 0x52, 0x65, 0x73, 0x22, 0x00, 0x42, 0x0f, 0x5a, 0x0d, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62,
+	0x75, 0x66, 0x2f, 0x75, 0x73, 0x65, 0x72, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
+
+var (
+	file_user_proto_rawDescOnce sync.Once
+	file_user_proto_rawDescData = file_user_proto_rawDesc
+)
+
+func file_user_proto_rawDescGZIP() []byte {
+	file_user_proto_rawDescOnce.Do(func() {
+		file_user_proto_rawDescData = protoimpl.X.CompressGZIP(file_user_proto_rawDescData)
+	})
+	return file_user_proto_rawDescData
+}
+
+var file_user_proto_msgTypes = make([]protoimpl.MessageInfo, 6)
+var file_user_proto_goTypes = []interface{}{
+	(*InsertReq)(nil), // 0: user.InsertReq
+	(*InsertRes)(nil), // 1: user.InsertRes
+	(*QueryReq)(nil),  // 2: user.QueryReq
+	(*QueryRes)(nil),  // 3: user.QueryRes
+	(*DeleteReq)(nil), // 4: user.DeleteReq
+	(*DeleteRes)(nil), // 5: user.DeleteRes
+}
+var file_user_proto_depIdxs = []int32{
+	0, // 0: user.User.Insert:input_type -> user.InsertReq
+	2, // 1: user.User.Query:input_type -> user.QueryReq
+	4, // 2: user.User.Delete:input_type -> user.DeleteReq
+	1, // 3: user.User.Insert:output_type -> user.InsertRes
+	3, // 4: user.User.Query:output_type -> user.QueryRes
+	5, // 5: user.User.Delete:output_type -> user.DeleteRes
+	3, // [3:6] is the sub-list for method output_type
+	0, // [0:3] 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_user_proto_init() }
+func file_user_proto_init() {
+	if File_user_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_user_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*InsertReq); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_user_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*InsertRes); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_user_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*QueryReq); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_user_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*QueryRes); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_user_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DeleteReq); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_user_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DeleteRes); 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_user_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   6,
+			NumExtensions: 0,
+			NumServices:   1,
+		},
+		GoTypes:           file_user_proto_goTypes,
+		DependencyIndexes: file_user_proto_depIdxs,
+		MessageInfos:      file_user_proto_msgTypes,
+	}.Build()
+	File_user_proto = out.File
+	file_user_proto_rawDesc = nil
+	file_user_proto_goTypes = nil
+	file_user_proto_depIdxs = nil
+}

example/trace/grpc_with_db/protobuf/user/user.proto

@@ -7,8 +7,6 @@ package user;
 
 option go_package = "protobuf/user";
 
-import "github.com/gogo/protobuf/gogoproto/gogo.proto";
-
 // User service for tracing demo.
 service User {
   rpc Insert(InsertReq) returns (InsertRes) {}
@@ -17,24 +15,21 @@ service User {
 }
 
 message InsertReq {
-  string Name = 1 [(gogoproto.moretags) = 'v:"required#Please input user name."'];
+  string Name = 1; // v: required#Please input user name.
 }
-
 message InsertRes {
   int32 Id = 1;
 }
 
 message QueryReq {
-  int32 Id = 1 [(gogoproto.moretags) = 'v:"min:1#User id is required for querying."'];
+  int32 Id = 1; // v: min:1#User id is required for querying.
 }
-
 message QueryRes {
   int32  Id = 1;
   string Name = 2;
 }
 
 message DeleteReq {
-  int32 Id = 1 [(gogoproto.moretags) = 'v:"min:1#User id is required for deleting."'];
+  int32 Id = 1; // v:min:1#User id is required for deleting.
 }
-
 message DeleteRes {}

example/trace/grpc_with_db/protobuf/user/user_grpc.pb.go

@@ -0,0 +1,188 @@
+// protoc --gofast_out=plugins=grpc:. \
+// protocol/user/*.proto \
+// -I/Users/john/Workspace/Go/GOPATH/src
+
+// Code generated by protoc-gen-go-grpc. DO NOT EDIT.
+// versions:
+// - protoc-gen-go-grpc v1.3.0
+// - protoc             v3.21.12
+// source: user.proto
+
+package user
+
+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 (
+	User_Insert_FullMethodName = "/user.User/Insert"
+	User_Query_FullMethodName  = "/user.User/Query"
+	User_Delete_FullMethodName = "/user.User/Delete"
+)
+
+// UserClient is the client API for User 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 UserClient interface {
+	Insert(ctx context.Context, in *InsertReq, opts ...grpc.CallOption) (*InsertRes, error)
+	Query(ctx context.Context, in *QueryReq, opts ...grpc.CallOption) (*QueryRes, error)
+	Delete(ctx context.Context, in *DeleteReq, opts ...grpc.CallOption) (*DeleteRes, error)
+}
+
+type userClient struct {
+	cc grpc.ClientConnInterface
+}
+
+func NewUserClient(cc grpc.ClientConnInterface) UserClient {
+	return &userClient{cc}
+}
+
+func (c *userClient) Insert(ctx context.Context, in *InsertReq, opts ...grpc.CallOption) (*InsertRes, error) {
+	out := new(InsertRes)
+	err := c.cc.Invoke(ctx, User_Insert_FullMethodName, in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *userClient) Query(ctx context.Context, in *QueryReq, opts ...grpc.CallOption) (*QueryRes, error) {
+	out := new(QueryRes)
+	err := c.cc.Invoke(ctx, User_Query_FullMethodName, in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *userClient) Delete(ctx context.Context, in *DeleteReq, opts ...grpc.CallOption) (*DeleteRes, error) {
+	out := new(DeleteRes)
+	err := c.cc.Invoke(ctx, User_Delete_FullMethodName, in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// UserServer is the server API for User service.
+// All implementations must embed UnimplementedUserServer
+// for forward compatibility
+type UserServer interface {
+	Insert(context.Context, *InsertReq) (*InsertRes, error)
+	Query(context.Context, *QueryReq) (*QueryRes, error)
+	Delete(context.Context, *DeleteReq) (*DeleteRes, error)
+	mustEmbedUnimplementedUserServer()
+}
+
+// UnimplementedUserServer must be embedded to have forward compatible implementations.
+type UnimplementedUserServer struct {
+}
+
+func (UnimplementedUserServer) Insert(context.Context, *InsertReq) (*InsertRes, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Insert not implemented")
+}
+func (UnimplementedUserServer) Query(context.Context, *QueryReq) (*QueryRes, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Query not implemented")
+}
+func (UnimplementedUserServer) Delete(context.Context, *DeleteReq) (*DeleteRes, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Delete not implemented")
+}
+func (UnimplementedUserServer) mustEmbedUnimplementedUserServer() {}
+
+// UnsafeUserServer may be embedded to opt out of forward compatibility for this service.
+// Use of this interface is not recommended, as added methods to UserServer will
+// result in compilation errors.
+type UnsafeUserServer interface {
+	mustEmbedUnimplementedUserServer()
+}
+
+func RegisterUserServer(s grpc.ServiceRegistrar, srv UserServer) {
+	s.RegisterService(&User_ServiceDesc, srv)
+}
+
+func _User_Insert_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(InsertReq)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(UserServer).Insert(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: User_Insert_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(UserServer).Insert(ctx, req.(*InsertReq))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _User_Query_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(QueryReq)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(UserServer).Query(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: User_Query_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(UserServer).Query(ctx, req.(*QueryReq))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _User_Delete_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(DeleteReq)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(UserServer).Delete(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: User_Delete_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(UserServer).Delete(ctx, req.(*DeleteReq))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+// User_ServiceDesc is the grpc.ServiceDesc for User service.
+// It's only intended for direct use with grpc.RegisterService,
+// and not to be introspected or modified (even as a copy)
+var User_ServiceDesc = grpc.ServiceDesc{
+	ServiceName: "user.User",
+	HandlerType: (*UserServer)(nil),
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "Insert",
+			Handler:    _User_Insert_Handler,
+		},
+		{
+			MethodName: "Query",
+			Handler:    _User_Query_Handler,
+		},
+		{
+			MethodName: "Delete",
+			Handler:    _User_Delete_Handler,
+		},
+	},
+	Streams:  []grpc.StreamDesc{},
+	Metadata: "user.proto",
+}

example/trace/grpc_with_db/server/server.go

@@ -3,6 +3,8 @@ package main
 import (
 	_ "github.com/gogf/gf/contrib/drivers/mysql/v2"
 	_ "github.com/gogf/gf/contrib/nosql/redis/v2"
+	"github.com/gogf/gf/contrib/registry/etcd/v2"
+	"github.com/gogf/gf/example/trace/grpc_with_db/protobuf/user"
 
 	"context"
 	"fmt"
@@ -10,14 +12,15 @@ import (
 
 	"github.com/gogf/gf/contrib/rpc/grpcx/v2"
 	"github.com/gogf/gf/contrib/trace/jaeger/v2"
-	"github.com/gogf/gf/example/trace/grpc_with_db/protocol/user"
 	"github.com/gogf/gf/v2/database/gdb"
 	"github.com/gogf/gf/v2/frame/g"
 	"github.com/gogf/gf/v2/os/gcache"
 	"github.com/gogf/gf/v2/os/gctx"
 )
 
-type server struct{}
+type Controller struct {
+	user.UnimplementedUserServer
+}
 
 const (
 	ServiceName       = "grpc-server-with-db"
@@ -25,6 +28,8 @@ const (
 )
 
 func main() {
+	grpcx.Resolver.Register(etcd.New("127.0.0.1:2379"))
+
 	var ctx = gctx.New()
 	tp, err := jaeger.Init(ServiceName, JaegerUdpEndpoint)
 	if err != nil {
@@ -36,12 +41,12 @@ func main() {
 	g.DB().GetCache().SetAdapter(gcache.NewAdapterRedis(g.Redis()))
 
 	s := grpcx.Server.New()
-	user.RegisterUserServer(s.Server, &server{})
+	user.RegisterUserServer(s.Server, &Controller{})
 	s.Run()
 }
 
 // Insert is a route handler for inserting user info into database.
-func (s *server) Insert(ctx context.Context, req *user.InsertReq) (res *user.InsertRes, err error) {
+func (s *Controller) Insert(ctx context.Context, req *user.InsertReq) (res *user.InsertRes, err error) {
 	result, err := g.Model("user").Ctx(ctx).Insert(g.Map{
 		"name": req.Name,
 	})
@@ -57,7 +62,7 @@ func (s *server) Insert(ctx context.Context, req *user.InsertReq) (res *user.Ins
 
 // Query is a route handler for querying user info. It firstly retrieves the info from redis,
 // if there's nothing in the redis, it then does db select.
-func (s *server) Query(ctx context.Context, req *user.QueryReq) (res *user.QueryRes, err error) {
+func (s *Controller) Query(ctx context.Context, req *user.QueryReq) (res *user.QueryRes, err error) {
 	err = g.Model("user").Ctx(ctx).Cache(gdb.CacheOption{
 		Duration: 5 * time.Second,
 		Name:     s.userCacheKey(req.Id),
@@ -70,7 +75,7 @@ func (s *server) Query(ctx context.Context, req *user.QueryReq) (res *user.Query
 }
 
 // Delete is a route handler for deleting specified user info.
-func (s *server) Delete(ctx context.Context, req *user.DeleteReq) (res *user.DeleteRes, err error) {
+func (s *Controller) Delete(ctx context.Context, req *user.DeleteReq) (res *user.DeleteRes, err error) {
 	err = g.Model("user").Ctx(ctx).Cache(gdb.CacheOption{
 		Duration: -1,
 		Name:     s.userCacheKey(req.Id),
@@ -79,6 +84,6 @@ func (s *server) Delete(ctx context.Context, req *user.DeleteReq) (res *user.Del
 	return
 }
 
-func (s *server) userCacheKey(id int32) string {
+func (s *Controller) userCacheKey(id int32) string {
 	return fmt.Sprintf(`userInfo:%d`, id)
 }