diff --git a/api/metadata/metadata.pb.go b/api/metadata/metadata.pb.go
index a0160e78e..a5e2067b7 100644
--- a/api/metadata/metadata.pb.go
+++ b/api/metadata/metadata.pb.go
@@ -2,7 +2,7 @@
 // versions:
 // 	protoc-gen-go v1.26.0
 // 	protoc        v3.14.0
-// source: metadata/metadata.proto
+// source: metadata.proto
 
 package metadata
 
@@ -31,7 +31,7 @@ type ListServicesRequest struct {
 func (x *ListServicesRequest) Reset() {
 	*x = ListServicesRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_metadata_metadata_proto_msgTypes[0]
+		mi := &file_metadata_proto_msgTypes[0]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -44,7 +44,7 @@ func (x *ListServicesRequest) String() string {
 func (*ListServicesRequest) ProtoMessage() {}
 
 func (x *ListServicesRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_metadata_metadata_proto_msgTypes[0]
+	mi := &file_metadata_proto_msgTypes[0]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -57,7 +57,7 @@ func (x *ListServicesRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListServicesRequest.ProtoReflect.Descriptor instead.
 func (*ListServicesRequest) Descriptor() ([]byte, []int) {
-	return file_metadata_metadata_proto_rawDescGZIP(), []int{0}
+	return file_metadata_proto_rawDescGZIP(), []int{0}
 }
 
 type ListServicesReply struct {
@@ -72,7 +72,7 @@ type ListServicesReply struct {
 func (x *ListServicesReply) Reset() {
 	*x = ListServicesReply{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_metadata_metadata_proto_msgTypes[1]
+		mi := &file_metadata_proto_msgTypes[1]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -85,7 +85,7 @@ func (x *ListServicesReply) String() string {
 func (*ListServicesReply) ProtoMessage() {}
 
 func (x *ListServicesReply) ProtoReflect() protoreflect.Message {
-	mi := &file_metadata_metadata_proto_msgTypes[1]
+	mi := &file_metadata_proto_msgTypes[1]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -98,7 +98,7 @@ func (x *ListServicesReply) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListServicesReply.ProtoReflect.Descriptor instead.
 func (*ListServicesReply) Descriptor() ([]byte, []int) {
-	return file_metadata_metadata_proto_rawDescGZIP(), []int{1}
+	return file_metadata_proto_rawDescGZIP(), []int{1}
 }
 
 func (x *ListServicesReply) GetServices() []string {
@@ -126,7 +126,7 @@ type GetServiceDescRequest struct {
 func (x *GetServiceDescRequest) Reset() {
 	*x = GetServiceDescRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_metadata_metadata_proto_msgTypes[2]
+		mi := &file_metadata_proto_msgTypes[2]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -139,7 +139,7 @@ func (x *GetServiceDescRequest) String() string {
 func (*GetServiceDescRequest) ProtoMessage() {}
 
 func (x *GetServiceDescRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_metadata_metadata_proto_msgTypes[2]
+	mi := &file_metadata_proto_msgTypes[2]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -152,7 +152,7 @@ func (x *GetServiceDescRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetServiceDescRequest.ProtoReflect.Descriptor instead.
 func (*GetServiceDescRequest) Descriptor() ([]byte, []int) {
-	return file_metadata_metadata_proto_rawDescGZIP(), []int{2}
+	return file_metadata_proto_rawDescGZIP(), []int{2}
 }
 
 func (x *GetServiceDescRequest) GetName() string {
@@ -173,7 +173,7 @@ type GetServiceDescReply struct {
 func (x *GetServiceDescReply) Reset() {
 	*x = GetServiceDescReply{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_metadata_metadata_proto_msgTypes[3]
+		mi := &file_metadata_proto_msgTypes[3]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -186,7 +186,7 @@ func (x *GetServiceDescReply) String() string {
 func (*GetServiceDescReply) ProtoMessage() {}
 
 func (x *GetServiceDescReply) ProtoReflect() protoreflect.Message {
-	mi := &file_metadata_metadata_proto_msgTypes[3]
+	mi := &file_metadata_proto_msgTypes[3]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -199,7 +199,7 @@ func (x *GetServiceDescReply) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetServiceDescReply.ProtoReflect.Descriptor instead.
 func (*GetServiceDescReply) Descriptor() ([]byte, []int) {
-	return file_metadata_metadata_proto_rawDescGZIP(), []int{3}
+	return file_metadata_proto_rawDescGZIP(), []int{3}
 }
 
 func (x *GetServiceDescReply) GetFileDescSet() *descriptorpb.FileDescriptorSet {
@@ -209,74 +209,74 @@ func (x *GetServiceDescReply) GetFileDescSet() *descriptorpb.FileDescriptorSet {
 	return nil
 }
 
-var File_metadata_metadata_proto protoreflect.FileDescriptor
+var File_metadata_proto protoreflect.FileDescriptor
 
-var file_metadata_metadata_proto_rawDesc = []byte{
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+var file_metadata_proto_rawDesc = []byte{
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 }
 
 var (
-	file_metadata_metadata_proto_rawDescOnce sync.Once
-	file_metadata_metadata_proto_rawDescData = file_metadata_metadata_proto_rawDesc
+	file_metadata_proto_rawDescOnce sync.Once
+	file_metadata_proto_rawDescData = file_metadata_proto_rawDesc
 )
 
-func file_metadata_metadata_proto_rawDescGZIP() []byte {
-	file_metadata_metadata_proto_rawDescOnce.Do(func() {
-		file_metadata_metadata_proto_rawDescData = protoimpl.X.CompressGZIP(file_metadata_metadata_proto_rawDescData)
+func file_metadata_proto_rawDescGZIP() []byte {
+	file_metadata_proto_rawDescOnce.Do(func() {
+		file_metadata_proto_rawDescData = protoimpl.X.CompressGZIP(file_metadata_proto_rawDescData)
 	})
-	return file_metadata_metadata_proto_rawDescData
+	return file_metadata_proto_rawDescData
 }
 
-var file_metadata_metadata_proto_msgTypes = make([]protoimpl.MessageInfo, 4)
-var file_metadata_metadata_proto_goTypes = []interface{}{
+var file_metadata_proto_msgTypes = make([]protoimpl.MessageInfo, 4)
+var file_metadata_proto_goTypes = []interface{}{
 	(*ListServicesRequest)(nil),            // 0: kratos.api.ListServicesRequest
 	(*ListServicesReply)(nil),              // 1: kratos.api.ListServicesReply
 	(*GetServiceDescRequest)(nil),          // 2: kratos.api.GetServiceDescRequest
 	(*GetServiceDescReply)(nil),            // 3: kratos.api.GetServiceDescReply
 	(*descriptorpb.FileDescriptorSet)(nil), // 4: google.protobuf.FileDescriptorSet
 }
-var file_metadata_metadata_proto_depIdxs = []int32{
+var file_metadata_proto_depIdxs = []int32{
 	4, // 0: kratos.api.GetServiceDescReply.file_desc_set:type_name -> google.protobuf.FileDescriptorSet
 	0, // 1: kratos.api.Metadata.ListServices:input_type -> kratos.api.ListServicesRequest
 	2, // 2: kratos.api.Metadata.GetServiceDesc:input_type -> kratos.api.GetServiceDescRequest
@@ -289,13 +289,13 @@ var file_metadata_metadata_proto_depIdxs = []int32{
 	0, // [0:1] is the sub-list for field type_name
 }
 
-func init() { file_metadata_metadata_proto_init() }
-func file_metadata_metadata_proto_init() {
-	if File_metadata_metadata_proto != nil {
+func init() { file_metadata_proto_init() }
+func file_metadata_proto_init() {
+	if File_metadata_proto != nil {
 		return
 	}
 	if !protoimpl.UnsafeEnabled {
-		file_metadata_metadata_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+		file_metadata_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*ListServicesRequest); i {
 			case 0:
 				return &v.state
@@ -307,7 +307,7 @@ func file_metadata_metadata_proto_init() {
 				return nil
 			}
 		}
-		file_metadata_metadata_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+		file_metadata_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*ListServicesReply); i {
 			case 0:
 				return &v.state
@@ -319,7 +319,7 @@ func file_metadata_metadata_proto_init() {
 				return nil
 			}
 		}
-		file_metadata_metadata_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+		file_metadata_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*GetServiceDescRequest); i {
 			case 0:
 				return &v.state
@@ -331,7 +331,7 @@ func file_metadata_metadata_proto_init() {
 				return nil
 			}
 		}
-		file_metadata_metadata_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+		file_metadata_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*GetServiceDescReply); i {
 			case 0:
 				return &v.state
@@ -348,18 +348,18 @@ func file_metadata_metadata_proto_init() {
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_metadata_metadata_proto_rawDesc,
+			RawDescriptor: file_metadata_proto_rawDesc,
 			NumEnums:      0,
 			NumMessages:   4,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
-		GoTypes:           file_metadata_metadata_proto_goTypes,
-		DependencyIndexes: file_metadata_metadata_proto_depIdxs,
-		MessageInfos:      file_metadata_metadata_proto_msgTypes,
+		GoTypes:           file_metadata_proto_goTypes,
+		DependencyIndexes: file_metadata_proto_depIdxs,
+		MessageInfos:      file_metadata_proto_msgTypes,
 	}.Build()
-	File_metadata_metadata_proto = out.File
-	file_metadata_metadata_proto_rawDesc = nil
-	file_metadata_metadata_proto_goTypes = nil
-	file_metadata_metadata_proto_depIdxs = nil
+	File_metadata_proto = out.File
+	file_metadata_proto_rawDesc = nil
+	file_metadata_proto_goTypes = nil
+	file_metadata_proto_depIdxs = nil
 }
diff --git a/api/metadata/metadata_grpc.pb.go b/api/metadata/metadata_grpc.pb.go
index eeafa0357..c110fe06f 100644
--- a/api/metadata/metadata_grpc.pb.go
+++ b/api/metadata/metadata_grpc.pb.go
@@ -137,5 +137,5 @@ var Metadata_ServiceDesc = grpc.ServiceDesc{
 		},
 	},
 	Streams:  []grpc.StreamDesc{},
-	Metadata: "metadata/metadata.proto",
+	Metadata: "metadata.proto",
 }
diff --git a/api/metadata/metadata_http.pb.go b/api/metadata/metadata_http.pb.go
index c610aa2c6..86e1dbc41 100644
--- a/api/metadata/metadata_http.pb.go
+++ b/api/metadata/metadata_http.pb.go
@@ -88,21 +88,21 @@ func NewMetadataHandler(srv MetadataHandler, opts ...http1.HandleOption) http.Ha
 	return r
 }
 
-type MetadataHttpClient interface {
+type MetadataHTTPClient interface {
 	GetServiceDesc(ctx context.Context, req *GetServiceDescRequest, opts ...http1.CallOption) (rsp *GetServiceDescReply, err error)
 
 	ListServices(ctx context.Context, req *ListServicesRequest, opts ...http1.CallOption) (rsp *ListServicesReply, err error)
 }
 
-type MetadataHttpClientImpl struct {
+type MetadataHTTPClientImpl struct {
 	cc *http1.Client
 }
 
-func NewMetadataHttpClient(client *http1.Client) MetadataHttpClient {
-	return &MetadataHttpClientImpl{client}
+func NewMetadataHTTPClient(client *http1.Client) MetadataHTTPClient {
+	return &MetadataHTTPClientImpl{client}
 }
 
-func (c *MetadataHttpClientImpl) GetServiceDesc(ctx context.Context, in *GetServiceDescRequest, opts ...http1.CallOption) (out *GetServiceDescReply, err error) {
+func (c *MetadataHTTPClientImpl) GetServiceDesc(ctx context.Context, in *GetServiceDescRequest, opts ...http1.CallOption) (out *GetServiceDescReply, err error) {
 	path := binding.EncodePath("GET", "/services/{name}", in)
 	out = &GetServiceDescReply{}
 
@@ -114,7 +114,7 @@ func (c *MetadataHttpClientImpl) GetServiceDesc(ctx context.Context, in *GetServ
 	return
 }
 
-func (c *MetadataHttpClientImpl) ListServices(ctx context.Context, in *ListServicesRequest, opts ...http1.CallOption) (out *ListServicesReply, err error) {
+func (c *MetadataHTTPClientImpl) ListServices(ctx context.Context, in *ListServicesRequest, opts ...http1.CallOption) (out *ListServicesReply, err error) {
 	path := binding.EncodePath("GET", "/services", in)
 	out = &ListServicesReply{}
 
diff --git a/api/metadata/server.go b/api/metadata/server.go
index 3163a7210..4c6a62000 100644
--- a/api/metadata/server.go
+++ b/api/metadata/server.go
@@ -16,6 +16,8 @@ import (
 	descriptorpb "google.golang.org/protobuf/types/descriptorpb"
 )
 
+//go:generate protoc --proto_path=. --proto_path=../../third_party --go_out=paths=source_relative:. --go-grpc_out=paths=source_relative:. --go-http_out=paths=source_relative:. metadata.proto
+
 // Server is api meta server
 type Server struct {
 	UnimplementedMetadataServer
diff --git a/cmd/kratos/main.go b/cmd/kratos/main.go
index cde970e7b..cd5230110 100644
--- a/cmd/kratos/main.go
+++ b/cmd/kratos/main.go
@@ -10,7 +10,7 @@ import (
 )
 
 var (
-	version string = "v2.0.0-beta4"
+	version string = "v2.0.0-rc1"
 
 	rootCmd = &cobra.Command{
 		Use:     "kratos",
diff --git a/cmd/protoc-gen-go-http/main.go b/cmd/protoc-gen-go-http/main.go
index 536f16fc4..4f37650ff 100644
--- a/cmd/protoc-gen-go-http/main.go
+++ b/cmd/protoc-gen-go-http/main.go
@@ -8,7 +8,7 @@ import (
 	"google.golang.org/protobuf/types/pluginpb"
 )
 
-const version = "v2.0.0-beta4"
+const version = "v2.0.0-rc1"
 
 func main() {
 	showVersion := flag.Bool("version", false, "print the version and exit")
diff --git a/cmd/protoc-gen-go-http/template.go b/cmd/protoc-gen-go-http/template.go
index d37eee4ce..a5317501f 100644
--- a/cmd/protoc-gen-go-http/template.go
+++ b/cmd/protoc-gen-go-http/template.go
@@ -52,24 +52,24 @@ func New{{.ServiceType}}Handler(srv {{.ServiceType}}Handler, opts ...http1.Handl
 	return r
 }
 
-type {{.ServiceType}}HttpClient interface {
+type {{.ServiceType}}HTTPClient interface {
 {{range .MethodSets}}
 	{{.Name}}(ctx context.Context, req *{{.Request}}, opts ...http1.CallOption) (rsp *{{.Reply}}, err error) 
 {{end}}
 }
 	
-type {{.ServiceType}}HttpClientImpl struct{
+type {{.ServiceType}}HTTPClientImpl struct{
 	cc *http1.Client
 }
 	
-func New{{.ServiceType}}HttpClient (client *http1.Client) {{.ServiceType}}HttpClient {
-	return &{{.ServiceType}}HttpClientImpl{client}
+func New{{.ServiceType}}HTTPClient (client *http1.Client) {{.ServiceType}}HTTPClient {
+	return &{{.ServiceType}}HTTPClientImpl{client}
 }
 	
 {{$svrType := .ServiceType}}
 {{$svrName := .ServiceName}}
 {{range .MethodSets}}
-func (c *{{$svrType}}HttpClientImpl) {{.Name}}(ctx context.Context, in *{{.Request}}, opts ...http1.CallOption) (out *{{.Reply}}, err error) {
+func (c *{{$svrType}}HTTPClientImpl) {{.Name}}(ctx context.Context, in *{{.Request}}, opts ...http1.CallOption) (out *{{.Reply}}, err error) {
 	path := binding.EncodePath("{{.Method}}", "{{.Path}}", in)
 	out = &{{.Reply}}{}
 	{{if .HasBody }}
diff --git a/errors/errors.go b/errors/errors.go
index 2d66bee41..b80cde056 100644
--- a/errors/errors.go
+++ b/errors/errors.go
@@ -6,13 +6,16 @@ import (
 
 	"github.com/go-kratos/kratos/v2/internal/httputil"
 	"google.golang.org/genproto/googleapis/rpc/errdetails"
-	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
 	"google.golang.org/protobuf/proto"
 )
 
-// UnknownReason is unknown reason for error info.
-const UnknownReason = ""
+const (
+	// UnknownCode is unknown code for error info.
+	UnknownCode = 500
+	// UnknownReason is unknown reason for error info.
+	UnknownReason = ""
+)
 
 //go:generate protoc -I. --go_out=paths=source_relative:. errors.proto
 
@@ -71,14 +74,14 @@ func Errorf(code int, reason, format string, a ...interface{}) error {
 
 // Code returns the code for a particular error.
 // It supports wrapped errors.
-func Code(err error) codes.Code {
+func Code(err error) int {
 	if err == nil {
-		return codes.OK
+		return 0
 	}
 	if se := FromError(err); err != nil {
-		return codes.Code(se.Code)
+		return int(se.Code)
 	}
-	return codes.Unknown
+	return UnknownCode
 }
 
 // Reason returns the reason for a particular error.
@@ -112,5 +115,5 @@ func FromError(err error) *Error {
 			}
 		}
 	}
-	return New(httputil.StatusFromGRPCCode(gs.Code()), UnknownReason, err.Error())
+	return New(UnknownCode, UnknownReason, err.Error())
 }
diff --git a/examples/blog/Makefile b/examples/blog/Makefile
index c26a0f0d1..8c9812769 100644
--- a/examples/blog/Makefile
+++ b/examples/blog/Makefile
@@ -1,65 +1,96 @@
 GOPATH:=$(shell go env GOPATH)
 VERSION=$(shell git describe --tags --always)
-PROTO_FILES=$(shell find . -name *.proto)
+INTERNAL_PROTO_FILES=$(shell find internal -name *.proto)
+API_PROTO_FILES=$(shell find api -name *.proto)
 KRATOS_VERSION=$(shell go mod graph |grep go-kratos/kratos/v2 |head -n 1 |awk -F '@' '{print $$2}')
 KRATOS=$(GOPATH)/pkg/mod/github.com/go-kratos/kratos/v2@$(KRATOS_VERSION)
 
-
 .PHONY: init
+# init env
 init:
 	go get -u github.com/go-kratos/kratos/cmd/kratos/v2
-	go get -u github.com/go-kratos/kratos/cmd/protoc-gen-go-http/v2
-	go get -u github.com/go-kratos/kratos/cmd/protoc-gen-go-errors/v2
 	go get -u google.golang.org/protobuf/cmd/protoc-gen-go
 	go get -u google.golang.org/grpc/cmd/protoc-gen-go-grpc
+	go get -u github.com/go-kratos/kratos/cmd/protoc-gen-go-http/v2
+	go get -u github.com/grpc-ecosystem/grpc-gateway/v2/protoc-gen-openapiv2
+	go get -u github.com/google/wire/cmd/wire
 
-.PHONY: proto
-# generate proto
-proto:
+.PHONY: grpc
+# generate grpc code
+grpc:
 	protoc --proto_path=. \
-           --proto_path=$(KRATOS)/api \
            --proto_path=$(KRATOS)/third_party \
-           --proto_path=$(GOPATH)/src \
            --go_out=paths=source_relative:. \
            --go-grpc_out=paths=source_relative:. \
-           --go-http_out=paths=source_relative:. \
-           --go-errors_out=paths=source_relative:. $(PROTO_FILES)
+           $(API_PROTO_FILES)
 
-.PHONY: validate
-# generate pb validate for proto
-validate:
+.PHONY: http
+# generate http code
+http:
 	protoc --proto_path=. \
-	       --proto_path=$(KRATOS)/third_party \
+           --proto_path=$(KRATOS)/third_party \
            --go_out=paths=source_relative:. \
-           --validate_out="lang=go:." \
-           $(PROTO_FILES)
+           --go-http_out=paths=source_relative:. \
+           $(API_PROTO_FILES)
+
+.PHONY: proto
+# generate internal proto
+proto:
+	protoc --proto_path=. \
+           --proto_path=$(KRATOS)/third_party \
+           --go_out=paths=source_relative:. \
+           $(INTERNAL_PROTO_FILES)
 
 .PHONY: swagger
 # generate swagger file
 swagger:
 	protoc --proto_path=. \
-	       --proto_path=$(KRATOS)/third_party \
-	       --openapiv2_out . \
-	       --openapiv2_opt logtostderr=true \
-	       $(PROTO_FILES)
-
-.PHONY: run
-run:
-	cd cmd/blog/ && go run .
-
-.PHONY: ent
-ent:
-	cd internal/data/ && ent generate ./ent/schema
-
+		--proto_path=$(KRATOS)/third_party \
+		--openapiv2_out . \
+		--openapiv2_opt logtostderr=true \
+		$(API_PROTO_FILES)
+		
 .PHONY: generate
+# generate client code
 generate:
 	go generate ./...
 
 .PHONY: build
+# build
 build:
 	mkdir -p bin/ && go build -ldflags "-X main.Version=$(VERSION)" -o ./bin/ ./...
 
 .PHONY: test
+# test
 test:
 	go test -v ./... -cover
 
+.PHONY: all
+# generate all
+all:
+	make generate;
+	make grpc;
+	make http;
+	make proto;
+	make swagger;
+	make build;
+	make test;
+
+# show help
+help:
+	@echo ''
+	@echo 'Usage:'
+	@echo ' make [target]'
+	@echo ''
+	@echo 'Targets:'
+	@awk '/^[a-zA-Z\-\_0-9]+:/ { \
+	helpMessage = match(lastLine, /^# (.*)/); \
+		if (helpMessage) { \
+			helpCommand = substr($$1, 0, index($$1, ":")-1); \
+			helpMessage = substr(lastLine, RSTART + 2, RLENGTH); \
+			printf "\033[36m%-22s\033[0m %s\n", helpCommand,helpMessage; \
+		} \
+	} \
+	{ lastLine = $$0 }' $(MAKEFILE_LIST)
+
+.DEFAULT_GOAL := help
diff --git a/examples/blog/api/blog/v1/blog.pb.go b/examples/blog/api/blog/v1/blog.pb.go
index 1271435ad..92a3faab6 100644
--- a/examples/blog/api/blog/v1/blog.pb.go
+++ b/examples/blog/api/blog/v1/blog.pb.go
@@ -1,8 +1,8 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
 // 	protoc-gen-go v1.26.0
-// 	protoc        v3.15.8
-// source: blog.proto
+// 	protoc        v3.14.0
+// source: api/blog/v1/blog.proto
 
 package v1
 
@@ -36,7 +36,7 @@ type Article struct {
 func (x *Article) Reset() {
 	*x = Article{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_blog_proto_msgTypes[0]
+		mi := &file_api_blog_v1_blog_proto_msgTypes[0]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -49,7 +49,7 @@ func (x *Article) String() string {
 func (*Article) ProtoMessage() {}
 
 func (x *Article) ProtoReflect() protoreflect.Message {
-	mi := &file_blog_proto_msgTypes[0]
+	mi := &file_api_blog_v1_blog_proto_msgTypes[0]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -62,7 +62,7 @@ func (x *Article) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Article.ProtoReflect.Descriptor instead.
 func (*Article) Descriptor() ([]byte, []int) {
-	return file_blog_proto_rawDescGZIP(), []int{0}
+	return file_api_blog_v1_blog_proto_rawDescGZIP(), []int{0}
 }
 
 func (x *Article) GetId() int64 {
@@ -105,7 +105,7 @@ type CreateArticleRequest struct {
 func (x *CreateArticleRequest) Reset() {
 	*x = CreateArticleRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_blog_proto_msgTypes[1]
+		mi := &file_api_blog_v1_blog_proto_msgTypes[1]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -118,7 +118,7 @@ func (x *CreateArticleRequest) String() string {
 func (*CreateArticleRequest) ProtoMessage() {}
 
 func (x *CreateArticleRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_blog_proto_msgTypes[1]
+	mi := &file_api_blog_v1_blog_proto_msgTypes[1]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -131,7 +131,7 @@ func (x *CreateArticleRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use CreateArticleRequest.ProtoReflect.Descriptor instead.
 func (*CreateArticleRequest) Descriptor() ([]byte, []int) {
-	return file_blog_proto_rawDescGZIP(), []int{1}
+	return file_api_blog_v1_blog_proto_rawDescGZIP(), []int{1}
 }
 
 func (x *CreateArticleRequest) GetTitle() string {
@@ -159,7 +159,7 @@ type CreateArticleReply struct {
 func (x *CreateArticleReply) Reset() {
 	*x = CreateArticleReply{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_blog_proto_msgTypes[2]
+		mi := &file_api_blog_v1_blog_proto_msgTypes[2]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -172,7 +172,7 @@ func (x *CreateArticleReply) String() string {
 func (*CreateArticleReply) ProtoMessage() {}
 
 func (x *CreateArticleReply) ProtoReflect() protoreflect.Message {
-	mi := &file_blog_proto_msgTypes[2]
+	mi := &file_api_blog_v1_blog_proto_msgTypes[2]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -185,7 +185,7 @@ func (x *CreateArticleReply) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use CreateArticleReply.ProtoReflect.Descriptor instead.
 func (*CreateArticleReply) Descriptor() ([]byte, []int) {
-	return file_blog_proto_rawDescGZIP(), []int{2}
+	return file_api_blog_v1_blog_proto_rawDescGZIP(), []int{2}
 }
 
 func (x *CreateArticleReply) GetArticle() *Article {
@@ -208,7 +208,7 @@ type UpdateArticleRequest struct {
 func (x *UpdateArticleRequest) Reset() {
 	*x = UpdateArticleRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_blog_proto_msgTypes[3]
+		mi := &file_api_blog_v1_blog_proto_msgTypes[3]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -221,7 +221,7 @@ func (x *UpdateArticleRequest) String() string {
 func (*UpdateArticleRequest) ProtoMessage() {}
 
 func (x *UpdateArticleRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_blog_proto_msgTypes[3]
+	mi := &file_api_blog_v1_blog_proto_msgTypes[3]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -234,7 +234,7 @@ func (x *UpdateArticleRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use UpdateArticleRequest.ProtoReflect.Descriptor instead.
 func (*UpdateArticleRequest) Descriptor() ([]byte, []int) {
-	return file_blog_proto_rawDescGZIP(), []int{3}
+	return file_api_blog_v1_blog_proto_rawDescGZIP(), []int{3}
 }
 
 func (x *UpdateArticleRequest) GetId() int64 {
@@ -269,7 +269,7 @@ type UpdateArticleReply struct {
 func (x *UpdateArticleReply) Reset() {
 	*x = UpdateArticleReply{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_blog_proto_msgTypes[4]
+		mi := &file_api_blog_v1_blog_proto_msgTypes[4]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -282,7 +282,7 @@ func (x *UpdateArticleReply) String() string {
 func (*UpdateArticleReply) ProtoMessage() {}
 
 func (x *UpdateArticleReply) ProtoReflect() protoreflect.Message {
-	mi := &file_blog_proto_msgTypes[4]
+	mi := &file_api_blog_v1_blog_proto_msgTypes[4]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -295,7 +295,7 @@ func (x *UpdateArticleReply) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use UpdateArticleReply.ProtoReflect.Descriptor instead.
 func (*UpdateArticleReply) Descriptor() ([]byte, []int) {
-	return file_blog_proto_rawDescGZIP(), []int{4}
+	return file_api_blog_v1_blog_proto_rawDescGZIP(), []int{4}
 }
 
 func (x *UpdateArticleReply) GetArticle() *Article {
@@ -316,7 +316,7 @@ type DeleteArticleRequest struct {
 func (x *DeleteArticleRequest) Reset() {
 	*x = DeleteArticleRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_blog_proto_msgTypes[5]
+		mi := &file_api_blog_v1_blog_proto_msgTypes[5]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -329,7 +329,7 @@ func (x *DeleteArticleRequest) String() string {
 func (*DeleteArticleRequest) ProtoMessage() {}
 
 func (x *DeleteArticleRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_blog_proto_msgTypes[5]
+	mi := &file_api_blog_v1_blog_proto_msgTypes[5]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -342,7 +342,7 @@ func (x *DeleteArticleRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use DeleteArticleRequest.ProtoReflect.Descriptor instead.
 func (*DeleteArticleRequest) Descriptor() ([]byte, []int) {
-	return file_blog_proto_rawDescGZIP(), []int{5}
+	return file_api_blog_v1_blog_proto_rawDescGZIP(), []int{5}
 }
 
 func (x *DeleteArticleRequest) GetId() int64 {
@@ -361,7 +361,7 @@ type DeleteArticleReply struct {
 func (x *DeleteArticleReply) Reset() {
 	*x = DeleteArticleReply{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_blog_proto_msgTypes[6]
+		mi := &file_api_blog_v1_blog_proto_msgTypes[6]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -374,7 +374,7 @@ func (x *DeleteArticleReply) String() string {
 func (*DeleteArticleReply) ProtoMessage() {}
 
 func (x *DeleteArticleReply) ProtoReflect() protoreflect.Message {
-	mi := &file_blog_proto_msgTypes[6]
+	mi := &file_api_blog_v1_blog_proto_msgTypes[6]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -387,7 +387,7 @@ func (x *DeleteArticleReply) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use DeleteArticleReply.ProtoReflect.Descriptor instead.
 func (*DeleteArticleReply) Descriptor() ([]byte, []int) {
-	return file_blog_proto_rawDescGZIP(), []int{6}
+	return file_api_blog_v1_blog_proto_rawDescGZIP(), []int{6}
 }
 
 type GetArticleRequest struct {
@@ -401,7 +401,7 @@ type GetArticleRequest struct {
 func (x *GetArticleRequest) Reset() {
 	*x = GetArticleRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_blog_proto_msgTypes[7]
+		mi := &file_api_blog_v1_blog_proto_msgTypes[7]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -414,7 +414,7 @@ func (x *GetArticleRequest) String() string {
 func (*GetArticleRequest) ProtoMessage() {}
 
 func (x *GetArticleRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_blog_proto_msgTypes[7]
+	mi := &file_api_blog_v1_blog_proto_msgTypes[7]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -427,7 +427,7 @@ func (x *GetArticleRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetArticleRequest.ProtoReflect.Descriptor instead.
 func (*GetArticleRequest) Descriptor() ([]byte, []int) {
-	return file_blog_proto_rawDescGZIP(), []int{7}
+	return file_api_blog_v1_blog_proto_rawDescGZIP(), []int{7}
 }
 
 func (x *GetArticleRequest) GetId() int64 {
@@ -448,7 +448,7 @@ type GetArticleReply struct {
 func (x *GetArticleReply) Reset() {
 	*x = GetArticleReply{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_blog_proto_msgTypes[8]
+		mi := &file_api_blog_v1_blog_proto_msgTypes[8]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -461,7 +461,7 @@ func (x *GetArticleReply) String() string {
 func (*GetArticleReply) ProtoMessage() {}
 
 func (x *GetArticleReply) ProtoReflect() protoreflect.Message {
-	mi := &file_blog_proto_msgTypes[8]
+	mi := &file_api_blog_v1_blog_proto_msgTypes[8]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -474,7 +474,7 @@ func (x *GetArticleReply) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetArticleReply.ProtoReflect.Descriptor instead.
 func (*GetArticleReply) Descriptor() ([]byte, []int) {
-	return file_blog_proto_rawDescGZIP(), []int{8}
+	return file_api_blog_v1_blog_proto_rawDescGZIP(), []int{8}
 }
 
 func (x *GetArticleReply) GetArticle() *Article {
@@ -493,7 +493,7 @@ type ListArticleRequest struct {
 func (x *ListArticleRequest) Reset() {
 	*x = ListArticleRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_blog_proto_msgTypes[9]
+		mi := &file_api_blog_v1_blog_proto_msgTypes[9]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -506,7 +506,7 @@ func (x *ListArticleRequest) String() string {
 func (*ListArticleRequest) ProtoMessage() {}
 
 func (x *ListArticleRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_blog_proto_msgTypes[9]
+	mi := &file_api_blog_v1_blog_proto_msgTypes[9]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -519,7 +519,7 @@ func (x *ListArticleRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListArticleRequest.ProtoReflect.Descriptor instead.
 func (*ListArticleRequest) Descriptor() ([]byte, []int) {
-	return file_blog_proto_rawDescGZIP(), []int{9}
+	return file_api_blog_v1_blog_proto_rawDescGZIP(), []int{9}
 }
 
 type ListArticleReply struct {
@@ -533,7 +533,7 @@ type ListArticleReply struct {
 func (x *ListArticleReply) Reset() {
 	*x = ListArticleReply{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_blog_proto_msgTypes[10]
+		mi := &file_api_blog_v1_blog_proto_msgTypes[10]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -546,7 +546,7 @@ func (x *ListArticleReply) String() string {
 func (*ListArticleReply) ProtoMessage() {}
 
 func (x *ListArticleReply) ProtoReflect() protoreflect.Message {
-	mi := &file_blog_proto_msgTypes[10]
+	mi := &file_api_blog_v1_blog_proto_msgTypes[10]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -559,7 +559,7 @@ func (x *ListArticleReply) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListArticleReply.ProtoReflect.Descriptor instead.
 func (*ListArticleReply) Descriptor() ([]byte, []int) {
-	return file_blog_proto_rawDescGZIP(), []int{10}
+	return file_api_blog_v1_blog_proto_rawDescGZIP(), []int{10}
 }
 
 func (x *ListArticleReply) GetResults() []*Article {
@@ -569,132 +569,140 @@ func (x *ListArticleReply) GetResults() []*Article {
 	return nil
 }
 
-var File_blog_proto protoreflect.FileDescriptor
+var File_api_blog_v1_blog_proto protoreflect.FileDescriptor
 
-var file_blog_proto_rawDesc = []byte{
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 }
 
 var (
-	file_blog_proto_rawDescOnce sync.Once
-	file_blog_proto_rawDescData = file_blog_proto_rawDesc
+	file_api_blog_v1_blog_proto_rawDescOnce sync.Once
+	file_api_blog_v1_blog_proto_rawDescData = file_api_blog_v1_blog_proto_rawDesc
 )
 
-func file_blog_proto_rawDescGZIP() []byte {
-	file_blog_proto_rawDescOnce.Do(func() {
-		file_blog_proto_rawDescData = protoimpl.X.CompressGZIP(file_blog_proto_rawDescData)
+func file_api_blog_v1_blog_proto_rawDescGZIP() []byte {
+	file_api_blog_v1_blog_proto_rawDescOnce.Do(func() {
+		file_api_blog_v1_blog_proto_rawDescData = protoimpl.X.CompressGZIP(file_api_blog_v1_blog_proto_rawDescData)
 	})
-	return file_blog_proto_rawDescData
+	return file_api_blog_v1_blog_proto_rawDescData
 }
 
-var file_blog_proto_msgTypes = make([]protoimpl.MessageInfo, 11)
-var file_blog_proto_goTypes = []interface{}{
-	(*Article)(nil),              // 0: api.v1.Article
-	(*CreateArticleRequest)(nil), // 1: api.v1.CreateArticleRequest
-	(*CreateArticleReply)(nil),   // 2: api.v1.CreateArticleReply
-	(*UpdateArticleRequest)(nil), // 3: api.v1.UpdateArticleRequest
-	(*UpdateArticleReply)(nil),   // 4: api.v1.UpdateArticleReply
-	(*DeleteArticleRequest)(nil), // 5: api.v1.DeleteArticleRequest
-	(*DeleteArticleReply)(nil),   // 6: api.v1.DeleteArticleReply
-	(*GetArticleRequest)(nil),    // 7: api.v1.GetArticleRequest
-	(*GetArticleReply)(nil),      // 8: api.v1.GetArticleReply
-	(*ListArticleRequest)(nil),   // 9: api.v1.ListArticleRequest
-	(*ListArticleReply)(nil),     // 10: api.v1.ListArticleReply
+var file_api_blog_v1_blog_proto_msgTypes = make([]protoimpl.MessageInfo, 11)
+var file_api_blog_v1_blog_proto_goTypes = []interface{}{
+	(*Article)(nil),              // 0: blog.api.v1.Article
+	(*CreateArticleRequest)(nil), // 1: blog.api.v1.CreateArticleRequest
+	(*CreateArticleReply)(nil),   // 2: blog.api.v1.CreateArticleReply
+	(*UpdateArticleRequest)(nil), // 3: blog.api.v1.UpdateArticleRequest
+	(*UpdateArticleReply)(nil),   // 4: blog.api.v1.UpdateArticleReply
+	(*DeleteArticleRequest)(nil), // 5: blog.api.v1.DeleteArticleRequest
+	(*DeleteArticleReply)(nil),   // 6: blog.api.v1.DeleteArticleReply
+	(*GetArticleRequest)(nil),    // 7: blog.api.v1.GetArticleRequest
+	(*GetArticleReply)(nil),      // 8: blog.api.v1.GetArticleReply
+	(*ListArticleRequest)(nil),   // 9: blog.api.v1.ListArticleRequest
+	(*ListArticleReply)(nil),     // 10: blog.api.v1.ListArticleReply
 }
-var file_blog_proto_depIdxs = []int32{
-	0,  // 0: api.v1.CreateArticleReply.Article:type_name -> api.v1.Article
-	0,  // 1: api.v1.UpdateArticleReply.Article:type_name -> api.v1.Article
-	0,  // 2: api.v1.GetArticleReply.Article:type_name -> api.v1.Article
-	0,  // 3: api.v1.ListArticleReply.results:type_name -> api.v1.Article
-	1,  // 4: api.v1.BlogService.CreateArticle:input_type -> api.v1.CreateArticleRequest
-	3,  // 5: api.v1.BlogService.UpdateArticle:input_type -> api.v1.UpdateArticleRequest
-	5,  // 6: api.v1.BlogService.DeleteArticle:input_type -> api.v1.DeleteArticleRequest
-	7,  // 7: api.v1.BlogService.GetArticle:input_type -> api.v1.GetArticleRequest
-	9,  // 8: api.v1.BlogService.ListArticle:input_type -> api.v1.ListArticleRequest
-	2,  // 9: api.v1.BlogService.CreateArticle:output_type -> api.v1.CreateArticleReply
-	4,  // 10: api.v1.BlogService.UpdateArticle:output_type -> api.v1.UpdateArticleReply
-	6,  // 11: api.v1.BlogService.DeleteArticle:output_type -> api.v1.DeleteArticleReply
-	8,  // 12: api.v1.BlogService.GetArticle:output_type -> api.v1.GetArticleReply
-	10, // 13: api.v1.BlogService.ListArticle:output_type -> api.v1.ListArticleReply
+var file_api_blog_v1_blog_proto_depIdxs = []int32{
+	0,  // 0: blog.api.v1.CreateArticleReply.Article:type_name -> blog.api.v1.Article
+	0,  // 1: blog.api.v1.UpdateArticleReply.Article:type_name -> blog.api.v1.Article
+	0,  // 2: blog.api.v1.GetArticleReply.Article:type_name -> blog.api.v1.Article
+	0,  // 3: blog.api.v1.ListArticleReply.results:type_name -> blog.api.v1.Article
+	1,  // 4: blog.api.v1.BlogService.CreateArticle:input_type -> blog.api.v1.CreateArticleRequest
+	3,  // 5: blog.api.v1.BlogService.UpdateArticle:input_type -> blog.api.v1.UpdateArticleRequest
+	5,  // 6: blog.api.v1.BlogService.DeleteArticle:input_type -> blog.api.v1.DeleteArticleRequest
+	7,  // 7: blog.api.v1.BlogService.GetArticle:input_type -> blog.api.v1.GetArticleRequest
+	9,  // 8: blog.api.v1.BlogService.ListArticle:input_type -> blog.api.v1.ListArticleRequest
+	2,  // 9: blog.api.v1.BlogService.CreateArticle:output_type -> blog.api.v1.CreateArticleReply
+	4,  // 10: blog.api.v1.BlogService.UpdateArticle:output_type -> blog.api.v1.UpdateArticleReply
+	6,  // 11: blog.api.v1.BlogService.DeleteArticle:output_type -> blog.api.v1.DeleteArticleReply
+	8,  // 12: blog.api.v1.BlogService.GetArticle:output_type -> blog.api.v1.GetArticleReply
+	10, // 13: blog.api.v1.BlogService.ListArticle:output_type -> blog.api.v1.ListArticleReply
 	9,  // [9:14] is the sub-list for method output_type
 	4,  // [4:9] is the sub-list for method input_type
 	4,  // [4:4] is the sub-list for extension type_name
@@ -702,13 +710,13 @@ var file_blog_proto_depIdxs = []int32{
 	0,  // [0:4] is the sub-list for field type_name
 }
 
-func init() { file_blog_proto_init() }
-func file_blog_proto_init() {
-	if File_blog_proto != nil {
+func init() { file_api_blog_v1_blog_proto_init() }
+func file_api_blog_v1_blog_proto_init() {
+	if File_api_blog_v1_blog_proto != nil {
 		return
 	}
 	if !protoimpl.UnsafeEnabled {
-		file_blog_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+		file_api_blog_v1_blog_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*Article); i {
 			case 0:
 				return &v.state
@@ -720,7 +728,7 @@ func file_blog_proto_init() {
 				return nil
 			}
 		}
-		file_blog_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+		file_api_blog_v1_blog_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*CreateArticleRequest); i {
 			case 0:
 				return &v.state
@@ -732,7 +740,7 @@ func file_blog_proto_init() {
 				return nil
 			}
 		}
-		file_blog_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+		file_api_blog_v1_blog_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*CreateArticleReply); i {
 			case 0:
 				return &v.state
@@ -744,7 +752,7 @@ func file_blog_proto_init() {
 				return nil
 			}
 		}
-		file_blog_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+		file_api_blog_v1_blog_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*UpdateArticleRequest); i {
 			case 0:
 				return &v.state
@@ -756,7 +764,7 @@ func file_blog_proto_init() {
 				return nil
 			}
 		}
-		file_blog_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
+		file_api_blog_v1_blog_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*UpdateArticleReply); i {
 			case 0:
 				return &v.state
@@ -768,7 +776,7 @@ func file_blog_proto_init() {
 				return nil
 			}
 		}
-		file_blog_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
+		file_api_blog_v1_blog_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*DeleteArticleRequest); i {
 			case 0:
 				return &v.state
@@ -780,7 +788,7 @@ func file_blog_proto_init() {
 				return nil
 			}
 		}
-		file_blog_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
+		file_api_blog_v1_blog_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*DeleteArticleReply); i {
 			case 0:
 				return &v.state
@@ -792,7 +800,7 @@ func file_blog_proto_init() {
 				return nil
 			}
 		}
-		file_blog_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
+		file_api_blog_v1_blog_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*GetArticleRequest); i {
 			case 0:
 				return &v.state
@@ -804,7 +812,7 @@ func file_blog_proto_init() {
 				return nil
 			}
 		}
-		file_blog_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
+		file_api_blog_v1_blog_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*GetArticleReply); i {
 			case 0:
 				return &v.state
@@ -816,7 +824,7 @@ func file_blog_proto_init() {
 				return nil
 			}
 		}
-		file_blog_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
+		file_api_blog_v1_blog_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*ListArticleRequest); i {
 			case 0:
 				return &v.state
@@ -828,7 +836,7 @@ func file_blog_proto_init() {
 				return nil
 			}
 		}
-		file_blog_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
+		file_api_blog_v1_blog_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*ListArticleReply); i {
 			case 0:
 				return &v.state
@@ -845,18 +853,18 @@ func file_blog_proto_init() {
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_blog_proto_rawDesc,
+			RawDescriptor: file_api_blog_v1_blog_proto_rawDesc,
 			NumEnums:      0,
 			NumMessages:   11,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
-		GoTypes:           file_blog_proto_goTypes,
-		DependencyIndexes: file_blog_proto_depIdxs,
-		MessageInfos:      file_blog_proto_msgTypes,
+		GoTypes:           file_api_blog_v1_blog_proto_goTypes,
+		DependencyIndexes: file_api_blog_v1_blog_proto_depIdxs,
+		MessageInfos:      file_api_blog_v1_blog_proto_msgTypes,
 	}.Build()
-	File_blog_proto = out.File
-	file_blog_proto_rawDesc = nil
-	file_blog_proto_goTypes = nil
-	file_blog_proto_depIdxs = nil
+	File_api_blog_v1_blog_proto = out.File
+	file_api_blog_v1_blog_proto_rawDesc = nil
+	file_api_blog_v1_blog_proto_goTypes = nil
+	file_api_blog_v1_blog_proto_depIdxs = nil
 }
diff --git a/examples/blog/api/blog/v1/blog.proto b/examples/blog/api/blog/v1/blog.proto
index 2674ee558..9587d71c7 100644
--- a/examples/blog/api/blog/v1/blog.proto
+++ b/examples/blog/api/blog/v1/blog.proto
@@ -1,10 +1,10 @@
 syntax = "proto3";
 
-package api.v1;
+package blog.api.v1;
 
 option go_package = "github.com/go-kratos/kratos/examples/blog/api/v1;v1";
 option java_multiple_files = true;
-option java_package = "api.v1";
+option java_package = "blog.api.v1";
 
 import "google/api/annotations.proto";
 // the validate rules:
@@ -86,4 +86,4 @@ message ListArticleRequest {
 
 message ListArticleReply {
     repeated Article results = 1;
-}
\ No newline at end of file
+}
diff --git a/examples/blog/api/blog/v1/blog_grpc.pb.go b/examples/blog/api/blog/v1/blog_grpc.pb.go
index cec731057..433c6e1cb 100644
--- a/examples/blog/api/blog/v1/blog_grpc.pb.go
+++ b/examples/blog/api/blog/v1/blog_grpc.pb.go
@@ -35,7 +35,7 @@ func NewBlogServiceClient(cc grpc.ClientConnInterface) BlogServiceClient {
 
 func (c *blogServiceClient) CreateArticle(ctx context.Context, in *CreateArticleRequest, opts ...grpc.CallOption) (*CreateArticleReply, error) {
 	out := new(CreateArticleReply)
-	err := c.cc.Invoke(ctx, "/api.v1.BlogService/CreateArticle", in, out, opts...)
+	err := c.cc.Invoke(ctx, "/blog.api.v1.BlogService/CreateArticle", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -44,7 +44,7 @@ func (c *blogServiceClient) CreateArticle(ctx context.Context, in *CreateArticle
 
 func (c *blogServiceClient) UpdateArticle(ctx context.Context, in *UpdateArticleRequest, opts ...grpc.CallOption) (*UpdateArticleReply, error) {
 	out := new(UpdateArticleReply)
-	err := c.cc.Invoke(ctx, "/api.v1.BlogService/UpdateArticle", in, out, opts...)
+	err := c.cc.Invoke(ctx, "/blog.api.v1.BlogService/UpdateArticle", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -53,7 +53,7 @@ func (c *blogServiceClient) UpdateArticle(ctx context.Context, in *UpdateArticle
 
 func (c *blogServiceClient) DeleteArticle(ctx context.Context, in *DeleteArticleRequest, opts ...grpc.CallOption) (*DeleteArticleReply, error) {
 	out := new(DeleteArticleReply)
-	err := c.cc.Invoke(ctx, "/api.v1.BlogService/DeleteArticle", in, out, opts...)
+	err := c.cc.Invoke(ctx, "/blog.api.v1.BlogService/DeleteArticle", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -62,7 +62,7 @@ func (c *blogServiceClient) DeleteArticle(ctx context.Context, in *DeleteArticle
 
 func (c *blogServiceClient) GetArticle(ctx context.Context, in *GetArticleRequest, opts ...grpc.CallOption) (*GetArticleReply, error) {
 	out := new(GetArticleReply)
-	err := c.cc.Invoke(ctx, "/api.v1.BlogService/GetArticle", in, out, opts...)
+	err := c.cc.Invoke(ctx, "/blog.api.v1.BlogService/GetArticle", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -71,7 +71,7 @@ func (c *blogServiceClient) GetArticle(ctx context.Context, in *GetArticleReques
 
 func (c *blogServiceClient) ListArticle(ctx context.Context, in *ListArticleRequest, opts ...grpc.CallOption) (*ListArticleReply, error) {
 	out := new(ListArticleReply)
-	err := c.cc.Invoke(ctx, "/api.v1.BlogService/ListArticle", in, out, opts...)
+	err := c.cc.Invoke(ctx, "/blog.api.v1.BlogService/ListArticle", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -132,7 +132,7 @@ func _BlogService_CreateArticle_Handler(srv interface{}, ctx context.Context, de
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/api.v1.BlogService/CreateArticle",
+		FullMethod: "/blog.api.v1.BlogService/CreateArticle",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(BlogServiceServer).CreateArticle(ctx, req.(*CreateArticleRequest))
@@ -150,7 +150,7 @@ func _BlogService_UpdateArticle_Handler(srv interface{}, ctx context.Context, de
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/api.v1.BlogService/UpdateArticle",
+		FullMethod: "/blog.api.v1.BlogService/UpdateArticle",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(BlogServiceServer).UpdateArticle(ctx, req.(*UpdateArticleRequest))
@@ -168,7 +168,7 @@ func _BlogService_DeleteArticle_Handler(srv interface{}, ctx context.Context, de
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/api.v1.BlogService/DeleteArticle",
+		FullMethod: "/blog.api.v1.BlogService/DeleteArticle",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(BlogServiceServer).DeleteArticle(ctx, req.(*DeleteArticleRequest))
@@ -186,7 +186,7 @@ func _BlogService_GetArticle_Handler(srv interface{}, ctx context.Context, dec f
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/api.v1.BlogService/GetArticle",
+		FullMethod: "/blog.api.v1.BlogService/GetArticle",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(BlogServiceServer).GetArticle(ctx, req.(*GetArticleRequest))
@@ -204,7 +204,7 @@ func _BlogService_ListArticle_Handler(srv interface{}, ctx context.Context, dec
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/api.v1.BlogService/ListArticle",
+		FullMethod: "/blog.api.v1.BlogService/ListArticle",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(BlogServiceServer).ListArticle(ctx, req.(*ListArticleRequest))
@@ -216,7 +216,7 @@ func _BlogService_ListArticle_Handler(srv interface{}, ctx context.Context, dec
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
 var BlogService_ServiceDesc = grpc.ServiceDesc{
-	ServiceName: "api.v1.BlogService",
+	ServiceName: "blog.api.v1.BlogService",
 	HandlerType: (*BlogServiceServer)(nil),
 	Methods: []grpc.MethodDesc{
 		{
@@ -241,5 +241,5 @@ var BlogService_ServiceDesc = grpc.ServiceDesc{
 		},
 	},
 	Streams:  []grpc.StreamDesc{},
-	Metadata: "blog.proto",
+	Metadata: "api/blog/v1/blog.proto",
 }
diff --git a/examples/blog/api/blog/v1/error_reason.pb.go b/examples/blog/api/blog/v1/error_reason.pb.go
index f892c4e62..d91e26bf7 100644
--- a/examples/blog/api/blog/v1/error_reason.pb.go
+++ b/examples/blog/api/blog/v1/error_reason.pb.go
@@ -2,7 +2,7 @@
 // versions:
 // 	protoc-gen-go v1.26.0
 // 	protoc        v3.14.0
-// source: error_reason.proto
+// source: api/blog/v1/error_reason.proto
 
 package v1
 
@@ -50,11 +50,11 @@ func (x ErrorReason) String() string {
 }
 
 func (ErrorReason) Descriptor() protoreflect.EnumDescriptor {
-	return file_error_reason_proto_enumTypes[0].Descriptor()
+	return file_api_blog_v1_error_reason_proto_enumTypes[0].Descriptor()
 }
 
 func (ErrorReason) Type() protoreflect.EnumType {
-	return &file_error_reason_proto_enumTypes[0]
+	return &file_api_blog_v1_error_reason_proto_enumTypes[0]
 }
 
 func (x ErrorReason) Number() protoreflect.EnumNumber {
@@ -63,43 +63,44 @@ func (x ErrorReason) Number() protoreflect.EnumNumber {
 
 // Deprecated: Use ErrorReason.Descriptor instead.
 func (ErrorReason) EnumDescriptor() ([]byte, []int) {
-	return file_error_reason_proto_rawDescGZIP(), []int{0}
+	return file_api_blog_v1_error_reason_proto_rawDescGZIP(), []int{0}
 }
 
-var File_error_reason_proto protoreflect.FileDescriptor
+var File_api_blog_v1_error_reason_proto protoreflect.FileDescriptor
 
-var file_error_reason_proto_rawDesc = []byte{
-	0x0a, 0x12, 0x65, 0x72, 0x72, 0x6f, 0x72, 0x5f, 0x72, 0x65, 0x61, 0x73, 0x6f, 0x6e, 0x2e, 0x70,
-	0x72, 0x6f, 0x74, 0x6f, 0x12, 0x0b, 0x61, 0x70, 0x69, 0x2e, 0x62, 0x6c, 0x6f, 0x67, 0x2e, 0x76,
-	0x31, 0x2a, 0x34, 0x0a, 0x0b, 0x45, 0x72, 0x72, 0x6f, 0x72, 0x52, 0x65, 0x61, 0x73, 0x6f, 0x6e,
-	0x12, 0x11, 0x0a, 0x0d, 0x54, 0x49, 0x54, 0x4c, 0x45, 0x5f, 0x4d, 0x49, 0x53, 0x53, 0x49, 0x4e,
-	0x47, 0x10, 0x00, 0x12, 0x12, 0x0a, 0x0e, 0x43, 0x4f, 0x4e, 0x54, 0x45, 0x4e, 0x54, 0x4d, 0x49,
-	0x53, 0x53, 0x49, 0x4e, 0x47, 0x10, 0x01, 0x42, 0x57, 0x0a, 0x0e, 0x62, 0x6c, 0x6f, 0x67, 0x2e,
-	0x76, 0x31, 0x2e, 0x65, 0x72, 0x72, 0x6f, 0x72, 0x73, 0x50, 0x01, 0x5a, 0x33, 0x67, 0x69, 0x74,
-	0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x67, 0x6f, 0x2d, 0x6b, 0x72, 0x61, 0x74, 0x6f,
-	0x73, 0x2f, 0x6b, 0x72, 0x61, 0x74, 0x6f, 0x73, 0x2f, 0x65, 0x78, 0x61, 0x6d, 0x70, 0x6c, 0x65,
-	0x73, 0x2f, 0x62, 0x6c, 0x6f, 0x67, 0x2f, 0x61, 0x70, 0x69, 0x2f, 0x76, 0x31, 0x3b, 0x76, 0x31,
-	0xa2, 0x02, 0x0d, 0x41, 0x50, 0x49, 0x42, 0x6c, 0x6f, 0x67, 0x45, 0x72, 0x72, 0x6f, 0x72, 0x73,
-	0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+var file_api_blog_v1_error_reason_proto_rawDesc = []byte{
+	0x0a, 0x1e, 0x61, 0x70, 0x69, 0x2f, 0x62, 0x6c, 0x6f, 0x67, 0x2f, 0x76, 0x31, 0x2f, 0x65, 0x72,
+	0x72, 0x6f, 0x72, 0x5f, 0x72, 0x65, 0x61, 0x73, 0x6f, 0x6e, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f,
+	0x12, 0x0b, 0x61, 0x70, 0x69, 0x2e, 0x62, 0x6c, 0x6f, 0x67, 0x2e, 0x76, 0x31, 0x2a, 0x34, 0x0a,
+	0x0b, 0x45, 0x72, 0x72, 0x6f, 0x72, 0x52, 0x65, 0x61, 0x73, 0x6f, 0x6e, 0x12, 0x11, 0x0a, 0x0d,
+	0x54, 0x49, 0x54, 0x4c, 0x45, 0x5f, 0x4d, 0x49, 0x53, 0x53, 0x49, 0x4e, 0x47, 0x10, 0x00, 0x12,
+	0x12, 0x0a, 0x0e, 0x43, 0x4f, 0x4e, 0x54, 0x45, 0x4e, 0x54, 0x4d, 0x49, 0x53, 0x53, 0x49, 0x4e,
+	0x47, 0x10, 0x01, 0x42, 0x57, 0x0a, 0x0e, 0x62, 0x6c, 0x6f, 0x67, 0x2e, 0x76, 0x31, 0x2e, 0x65,
+	0x72, 0x72, 0x6f, 0x72, 0x73, 0x50, 0x01, 0x5a, 0x33, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e,
+	0x63, 0x6f, 0x6d, 0x2f, 0x67, 0x6f, 0x2d, 0x6b, 0x72, 0x61, 0x74, 0x6f, 0x73, 0x2f, 0x6b, 0x72,
+	0x61, 0x74, 0x6f, 0x73, 0x2f, 0x65, 0x78, 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x73, 0x2f, 0x62, 0x6c,
+	0x6f, 0x67, 0x2f, 0x61, 0x70, 0x69, 0x2f, 0x76, 0x31, 0x3b, 0x76, 0x31, 0xa2, 0x02, 0x0d, 0x41,
+	0x50, 0x49, 0x42, 0x6c, 0x6f, 0x67, 0x45, 0x72, 0x72, 0x6f, 0x72, 0x73, 0x62, 0x06, 0x70, 0x72,
+	0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
-	file_error_reason_proto_rawDescOnce sync.Once
-	file_error_reason_proto_rawDescData = file_error_reason_proto_rawDesc
+	file_api_blog_v1_error_reason_proto_rawDescOnce sync.Once
+	file_api_blog_v1_error_reason_proto_rawDescData = file_api_blog_v1_error_reason_proto_rawDesc
 )
 
-func file_error_reason_proto_rawDescGZIP() []byte {
-	file_error_reason_proto_rawDescOnce.Do(func() {
-		file_error_reason_proto_rawDescData = protoimpl.X.CompressGZIP(file_error_reason_proto_rawDescData)
+func file_api_blog_v1_error_reason_proto_rawDescGZIP() []byte {
+	file_api_blog_v1_error_reason_proto_rawDescOnce.Do(func() {
+		file_api_blog_v1_error_reason_proto_rawDescData = protoimpl.X.CompressGZIP(file_api_blog_v1_error_reason_proto_rawDescData)
 	})
-	return file_error_reason_proto_rawDescData
+	return file_api_blog_v1_error_reason_proto_rawDescData
 }
 
-var file_error_reason_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
-var file_error_reason_proto_goTypes = []interface{}{
+var file_api_blog_v1_error_reason_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
+var file_api_blog_v1_error_reason_proto_goTypes = []interface{}{
 	(ErrorReason)(0), // 0: api.blog.v1.ErrorReason
 }
-var file_error_reason_proto_depIdxs = []int32{
+var file_api_blog_v1_error_reason_proto_depIdxs = []int32{
 	0, // [0:0] is the sub-list for method output_type
 	0, // [0:0] is the sub-list for method input_type
 	0, // [0:0] is the sub-list for extension type_name
@@ -107,27 +108,27 @@ var file_error_reason_proto_depIdxs = []int32{
 	0, // [0:0] is the sub-list for field type_name
 }
 
-func init() { file_error_reason_proto_init() }
-func file_error_reason_proto_init() {
-	if File_error_reason_proto != nil {
+func init() { file_api_blog_v1_error_reason_proto_init() }
+func file_api_blog_v1_error_reason_proto_init() {
+	if File_api_blog_v1_error_reason_proto != nil {
 		return
 	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_error_reason_proto_rawDesc,
+			RawDescriptor: file_api_blog_v1_error_reason_proto_rawDesc,
 			NumEnums:      1,
 			NumMessages:   0,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
-		GoTypes:           file_error_reason_proto_goTypes,
-		DependencyIndexes: file_error_reason_proto_depIdxs,
-		EnumInfos:         file_error_reason_proto_enumTypes,
+		GoTypes:           file_api_blog_v1_error_reason_proto_goTypes,
+		DependencyIndexes: file_api_blog_v1_error_reason_proto_depIdxs,
+		EnumInfos:         file_api_blog_v1_error_reason_proto_enumTypes,
 	}.Build()
-	File_error_reason_proto = out.File
-	file_error_reason_proto_rawDesc = nil
-	file_error_reason_proto_goTypes = nil
-	file_error_reason_proto_depIdxs = nil
+	File_api_blog_v1_error_reason_proto = out.File
+	file_api_blog_v1_error_reason_proto_rawDesc = nil
+	file_api_blog_v1_error_reason_proto_goTypes = nil
+	file_api_blog_v1_error_reason_proto_depIdxs = nil
 }
diff --git a/examples/blog/internal/conf/conf.pb.go b/examples/blog/internal/conf/conf.pb.go
index c6e80ffa2..344b8adc5 100644
--- a/examples/blog/internal/conf/conf.pb.go
+++ b/examples/blog/internal/conf/conf.pb.go
@@ -1,16 +1,15 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.25.0-devel
-// 	protoc        v3.6.1
-// source: conf.proto
+// 	protoc-gen-go v1.26.0
+// 	protoc        v3.14.0
+// source: internal/conf/conf.proto
 
 package conf
 
 import (
-	proto "github.com/golang/protobuf/proto"
-	duration "github.com/golang/protobuf/ptypes/duration"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	durationpb "google.golang.org/protobuf/types/known/durationpb"
 	reflect "reflect"
 	sync "sync"
 )
@@ -22,10 +21,6 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
-// This is a compile-time assertion that a sufficiently up-to-date version
-// of the legacy proto package is being used.
-const _ = proto.ProtoPackageIsVersion4
-
 type Bootstrap struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -38,7 +33,7 @@ type Bootstrap struct {
 func (x *Bootstrap) Reset() {
 	*x = Bootstrap{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_conf_proto_msgTypes[0]
+		mi := &file_internal_conf_conf_proto_msgTypes[0]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -51,7 +46,7 @@ func (x *Bootstrap) String() string {
 func (*Bootstrap) ProtoMessage() {}
 
 func (x *Bootstrap) ProtoReflect() protoreflect.Message {
-	mi := &file_conf_proto_msgTypes[0]
+	mi := &file_internal_conf_conf_proto_msgTypes[0]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -64,7 +59,7 @@ func (x *Bootstrap) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Bootstrap.ProtoReflect.Descriptor instead.
 func (*Bootstrap) Descriptor() ([]byte, []int) {
-	return file_conf_proto_rawDescGZIP(), []int{0}
+	return file_internal_conf_conf_proto_rawDescGZIP(), []int{0}
 }
 
 func (x *Bootstrap) GetServer() *Server {
@@ -93,7 +88,7 @@ type Server struct {
 func (x *Server) Reset() {
 	*x = Server{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_conf_proto_msgTypes[1]
+		mi := &file_internal_conf_conf_proto_msgTypes[1]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -106,7 +101,7 @@ func (x *Server) String() string {
 func (*Server) ProtoMessage() {}
 
 func (x *Server) ProtoReflect() protoreflect.Message {
-	mi := &file_conf_proto_msgTypes[1]
+	mi := &file_internal_conf_conf_proto_msgTypes[1]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -119,7 +114,7 @@ func (x *Server) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Server.ProtoReflect.Descriptor instead.
 func (*Server) Descriptor() ([]byte, []int) {
-	return file_conf_proto_rawDescGZIP(), []int{1}
+	return file_internal_conf_conf_proto_rawDescGZIP(), []int{1}
 }
 
 func (x *Server) GetHttp() *Server_HTTP {
@@ -148,7 +143,7 @@ type Data struct {
 func (x *Data) Reset() {
 	*x = Data{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_conf_proto_msgTypes[2]
+		mi := &file_internal_conf_conf_proto_msgTypes[2]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -161,7 +156,7 @@ func (x *Data) String() string {
 func (*Data) ProtoMessage() {}
 
 func (x *Data) ProtoReflect() protoreflect.Message {
-	mi := &file_conf_proto_msgTypes[2]
+	mi := &file_internal_conf_conf_proto_msgTypes[2]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -174,7 +169,7 @@ func (x *Data) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Data.ProtoReflect.Descriptor instead.
 func (*Data) Descriptor() ([]byte, []int) {
-	return file_conf_proto_rawDescGZIP(), []int{2}
+	return file_internal_conf_conf_proto_rawDescGZIP(), []int{2}
 }
 
 func (x *Data) GetDatabase() *Data_Database {
@@ -196,15 +191,15 @@ type Server_HTTP struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Network string             `protobuf:"bytes,1,opt,name=network,proto3" json:"network,omitempty"`
-	Addr    string             `protobuf:"bytes,2,opt,name=addr,proto3" json:"addr,omitempty"`
-	Timeout *duration.Duration `protobuf:"bytes,3,opt,name=timeout,proto3" json:"timeout,omitempty"`
+	Network string               `protobuf:"bytes,1,opt,name=network,proto3" json:"network,omitempty"`
+	Addr    string               `protobuf:"bytes,2,opt,name=addr,proto3" json:"addr,omitempty"`
+	Timeout *durationpb.Duration `protobuf:"bytes,3,opt,name=timeout,proto3" json:"timeout,omitempty"`
 }
 
 func (x *Server_HTTP) Reset() {
 	*x = Server_HTTP{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_conf_proto_msgTypes[3]
+		mi := &file_internal_conf_conf_proto_msgTypes[3]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -217,7 +212,7 @@ func (x *Server_HTTP) String() string {
 func (*Server_HTTP) ProtoMessage() {}
 
 func (x *Server_HTTP) ProtoReflect() protoreflect.Message {
-	mi := &file_conf_proto_msgTypes[3]
+	mi := &file_internal_conf_conf_proto_msgTypes[3]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -230,7 +225,7 @@ func (x *Server_HTTP) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Server_HTTP.ProtoReflect.Descriptor instead.
 func (*Server_HTTP) Descriptor() ([]byte, []int) {
-	return file_conf_proto_rawDescGZIP(), []int{1, 0}
+	return file_internal_conf_conf_proto_rawDescGZIP(), []int{1, 0}
 }
 
 func (x *Server_HTTP) GetNetwork() string {
@@ -247,7 +242,7 @@ func (x *Server_HTTP) GetAddr() string {
 	return ""
 }
 
-func (x *Server_HTTP) GetTimeout() *duration.Duration {
+func (x *Server_HTTP) GetTimeout() *durationpb.Duration {
 	if x != nil {
 		return x.Timeout
 	}
@@ -259,15 +254,15 @@ type Server_GRPC struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Network string             `protobuf:"bytes,1,opt,name=network,proto3" json:"network,omitempty"`
-	Addr    string             `protobuf:"bytes,2,opt,name=addr,proto3" json:"addr,omitempty"`
-	Timeout *duration.Duration `protobuf:"bytes,3,opt,name=timeout,proto3" json:"timeout,omitempty"`
+	Network string               `protobuf:"bytes,1,opt,name=network,proto3" json:"network,omitempty"`
+	Addr    string               `protobuf:"bytes,2,opt,name=addr,proto3" json:"addr,omitempty"`
+	Timeout *durationpb.Duration `protobuf:"bytes,3,opt,name=timeout,proto3" json:"timeout,omitempty"`
 }
 
 func (x *Server_GRPC) Reset() {
 	*x = Server_GRPC{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_conf_proto_msgTypes[4]
+		mi := &file_internal_conf_conf_proto_msgTypes[4]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -280,7 +275,7 @@ func (x *Server_GRPC) String() string {
 func (*Server_GRPC) ProtoMessage() {}
 
 func (x *Server_GRPC) ProtoReflect() protoreflect.Message {
-	mi := &file_conf_proto_msgTypes[4]
+	mi := &file_internal_conf_conf_proto_msgTypes[4]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -293,7 +288,7 @@ func (x *Server_GRPC) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Server_GRPC.ProtoReflect.Descriptor instead.
 func (*Server_GRPC) Descriptor() ([]byte, []int) {
-	return file_conf_proto_rawDescGZIP(), []int{1, 1}
+	return file_internal_conf_conf_proto_rawDescGZIP(), []int{1, 1}
 }
 
 func (x *Server_GRPC) GetNetwork() string {
@@ -310,7 +305,7 @@ func (x *Server_GRPC) GetAddr() string {
 	return ""
 }
 
-func (x *Server_GRPC) GetTimeout() *duration.Duration {
+func (x *Server_GRPC) GetTimeout() *durationpb.Duration {
 	if x != nil {
 		return x.Timeout
 	}
@@ -329,7 +324,7 @@ type Data_Database struct {
 func (x *Data_Database) Reset() {
 	*x = Data_Database{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_conf_proto_msgTypes[5]
+		mi := &file_internal_conf_conf_proto_msgTypes[5]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -342,7 +337,7 @@ func (x *Data_Database) String() string {
 func (*Data_Database) ProtoMessage() {}
 
 func (x *Data_Database) ProtoReflect() protoreflect.Message {
-	mi := &file_conf_proto_msgTypes[5]
+	mi := &file_internal_conf_conf_proto_msgTypes[5]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -355,7 +350,7 @@ func (x *Data_Database) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Data_Database.ProtoReflect.Descriptor instead.
 func (*Data_Database) Descriptor() ([]byte, []int) {
-	return file_conf_proto_rawDescGZIP(), []int{2, 0}
+	return file_internal_conf_conf_proto_rawDescGZIP(), []int{2, 0}
 }
 
 func (x *Data_Database) GetDriver() string {
@@ -377,19 +372,19 @@ type Data_Redis struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Network      string             `protobuf:"bytes,1,opt,name=network,proto3" json:"network,omitempty"`
-	Addr         string             `protobuf:"bytes,2,opt,name=addr,proto3" json:"addr,omitempty"`
-	Password     string             `protobuf:"bytes,3,opt,name=password,proto3" json:"password,omitempty"`
-	Db           int32              `protobuf:"varint,4,opt,name=db,proto3" json:"db,omitempty"`
-	DialTimeout  *duration.Duration `protobuf:"bytes,5,opt,name=dial_timeout,json=dialTimeout,proto3" json:"dial_timeout,omitempty"`
-	ReadTimeout  *duration.Duration `protobuf:"bytes,6,opt,name=read_timeout,json=readTimeout,proto3" json:"read_timeout,omitempty"`
-	WriteTimeout *duration.Duration `protobuf:"bytes,7,opt,name=write_timeout,json=writeTimeout,proto3" json:"write_timeout,omitempty"`
+	Network      string               `protobuf:"bytes,1,opt,name=network,proto3" json:"network,omitempty"`
+	Addr         string               `protobuf:"bytes,2,opt,name=addr,proto3" json:"addr,omitempty"`
+	Password     string               `protobuf:"bytes,3,opt,name=password,proto3" json:"password,omitempty"`
+	Db           int32                `protobuf:"varint,4,opt,name=db,proto3" json:"db,omitempty"`
+	DialTimeout  *durationpb.Duration `protobuf:"bytes,5,opt,name=dial_timeout,json=dialTimeout,proto3" json:"dial_timeout,omitempty"`
+	ReadTimeout  *durationpb.Duration `protobuf:"bytes,6,opt,name=read_timeout,json=readTimeout,proto3" json:"read_timeout,omitempty"`
+	WriteTimeout *durationpb.Duration `protobuf:"bytes,7,opt,name=write_timeout,json=writeTimeout,proto3" json:"write_timeout,omitempty"`
 }
 
 func (x *Data_Redis) Reset() {
 	*x = Data_Redis{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_conf_proto_msgTypes[6]
+		mi := &file_internal_conf_conf_proto_msgTypes[6]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -402,7 +397,7 @@ func (x *Data_Redis) String() string {
 func (*Data_Redis) ProtoMessage() {}
 
 func (x *Data_Redis) ProtoReflect() protoreflect.Message {
-	mi := &file_conf_proto_msgTypes[6]
+	mi := &file_internal_conf_conf_proto_msgTypes[6]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -415,7 +410,7 @@ func (x *Data_Redis) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Data_Redis.ProtoReflect.Descriptor instead.
 func (*Data_Redis) Descriptor() ([]byte, []int) {
-	return file_conf_proto_rawDescGZIP(), []int{2, 1}
+	return file_internal_conf_conf_proto_rawDescGZIP(), []int{2, 1}
 }
 
 func (x *Data_Redis) GetNetwork() string {
@@ -446,120 +441,124 @@ func (x *Data_Redis) GetDb() int32 {
 	return 0
 }
 
-func (x *Data_Redis) GetDialTimeout() *duration.Duration {
+func (x *Data_Redis) GetDialTimeout() *durationpb.Duration {
 	if x != nil {
 		return x.DialTimeout
 	}
 	return nil
 }
 
-func (x *Data_Redis) GetReadTimeout() *duration.Duration {
+func (x *Data_Redis) GetReadTimeout() *durationpb.Duration {
 	if x != nil {
 		return x.ReadTimeout
 	}
 	return nil
 }
 
-func (x *Data_Redis) GetWriteTimeout() *duration.Duration {
+func (x *Data_Redis) GetWriteTimeout() *durationpb.Duration {
 	if x != nil {
 		return x.WriteTimeout
 	}
 	return nil
 }
 
-var File_conf_proto protoreflect.FileDescriptor
+var File_internal_conf_conf_proto protoreflect.FileDescriptor
 
-var file_conf_proto_rawDesc = []byte{
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+var file_internal_conf_conf_proto_rawDesc = []byte{
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+	0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
-	file_conf_proto_rawDescOnce sync.Once
-	file_conf_proto_rawDescData = file_conf_proto_rawDesc
+	file_internal_conf_conf_proto_rawDescOnce sync.Once
+	file_internal_conf_conf_proto_rawDescData = file_internal_conf_conf_proto_rawDesc
 )
 
-func file_conf_proto_rawDescGZIP() []byte {
-	file_conf_proto_rawDescOnce.Do(func() {
-		file_conf_proto_rawDescData = protoimpl.X.CompressGZIP(file_conf_proto_rawDescData)
+func file_internal_conf_conf_proto_rawDescGZIP() []byte {
+	file_internal_conf_conf_proto_rawDescOnce.Do(func() {
+		file_internal_conf_conf_proto_rawDescData = protoimpl.X.CompressGZIP(file_internal_conf_conf_proto_rawDescData)
 	})
-	return file_conf_proto_rawDescData
+	return file_internal_conf_conf_proto_rawDescData
 }
 
-var file_conf_proto_msgTypes = make([]protoimpl.MessageInfo, 7)
-var file_conf_proto_goTypes = []interface{}{
-	(*Bootstrap)(nil),         // 0: kratos.internal.conf.Bootstrap
-	(*Server)(nil),            // 1: kratos.internal.conf.Server
-	(*Data)(nil),              // 2: kratos.internal.conf.Data
-	(*Server_HTTP)(nil),       // 3: kratos.internal.conf.Server.HTTP
-	(*Server_GRPC)(nil),       // 4: kratos.internal.conf.Server.GRPC
-	(*Data_Database)(nil),     // 5: kratos.internal.conf.Data.Database
-	(*Data_Redis)(nil),        // 6: kratos.internal.conf.Data.Redis
-	(*duration.Duration)(nil), // 7: google.protobuf.Duration
+var file_internal_conf_conf_proto_msgTypes = make([]protoimpl.MessageInfo, 7)
+var file_internal_conf_conf_proto_goTypes = []interface{}{
+	(*Bootstrap)(nil),           // 0: kratos.internal.conf.Bootstrap
+	(*Server)(nil),              // 1: kratos.internal.conf.Server
+	(*Data)(nil),                // 2: kratos.internal.conf.Data
+	(*Server_HTTP)(nil),         // 3: kratos.internal.conf.Server.HTTP
+	(*Server_GRPC)(nil),         // 4: kratos.internal.conf.Server.GRPC
+	(*Data_Database)(nil),       // 5: kratos.internal.conf.Data.Database
+	(*Data_Redis)(nil),          // 6: kratos.internal.conf.Data.Redis
+	(*durationpb.Duration)(nil), // 7: google.protobuf.Duration
 }
-var file_conf_proto_depIdxs = []int32{
+var file_internal_conf_conf_proto_depIdxs = []int32{
 	1,  // 0: kratos.internal.conf.Bootstrap.server:type_name -> kratos.internal.conf.Server
 	2,  // 1: kratos.internal.conf.Bootstrap.data:type_name -> kratos.internal.conf.Data
 	3,  // 2: kratos.internal.conf.Server.http:type_name -> kratos.internal.conf.Server.HTTP
@@ -578,13 +577,13 @@ var file_conf_proto_depIdxs = []int32{
 	0,  // [0:11] is the sub-list for field type_name
 }
 
-func init() { file_conf_proto_init() }
-func file_conf_proto_init() {
-	if File_conf_proto != nil {
+func init() { file_internal_conf_conf_proto_init() }
+func file_internal_conf_conf_proto_init() {
+	if File_internal_conf_conf_proto != nil {
 		return
 	}
 	if !protoimpl.UnsafeEnabled {
-		file_conf_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+		file_internal_conf_conf_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*Bootstrap); i {
 			case 0:
 				return &v.state
@@ -596,7 +595,7 @@ func file_conf_proto_init() {
 				return nil
 			}
 		}
-		file_conf_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+		file_internal_conf_conf_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*Server); i {
 			case 0:
 				return &v.state
@@ -608,7 +607,7 @@ func file_conf_proto_init() {
 				return nil
 			}
 		}
-		file_conf_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+		file_internal_conf_conf_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*Data); i {
 			case 0:
 				return &v.state
@@ -620,7 +619,7 @@ func file_conf_proto_init() {
 				return nil
 			}
 		}
-		file_conf_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+		file_internal_conf_conf_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*Server_HTTP); i {
 			case 0:
 				return &v.state
@@ -632,7 +631,7 @@ func file_conf_proto_init() {
 				return nil
 			}
 		}
-		file_conf_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
+		file_internal_conf_conf_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*Server_GRPC); i {
 			case 0:
 				return &v.state
@@ -644,7 +643,7 @@ func file_conf_proto_init() {
 				return nil
 			}
 		}
-		file_conf_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
+		file_internal_conf_conf_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*Data_Database); i {
 			case 0:
 				return &v.state
@@ -656,7 +655,7 @@ func file_conf_proto_init() {
 				return nil
 			}
 		}
-		file_conf_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
+		file_internal_conf_conf_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*Data_Redis); i {
 			case 0:
 				return &v.state
@@ -673,18 +672,18 @@ func file_conf_proto_init() {
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_conf_proto_rawDesc,
+			RawDescriptor: file_internal_conf_conf_proto_rawDesc,
 			NumEnums:      0,
 			NumMessages:   7,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
-		GoTypes:           file_conf_proto_goTypes,
-		DependencyIndexes: file_conf_proto_depIdxs,
-		MessageInfos:      file_conf_proto_msgTypes,
+		GoTypes:           file_internal_conf_conf_proto_goTypes,
+		DependencyIndexes: file_internal_conf_conf_proto_depIdxs,
+		MessageInfos:      file_internal_conf_conf_proto_msgTypes,
 	}.Build()
-	File_conf_proto = out.File
-	file_conf_proto_rawDesc = nil
-	file_conf_proto_goTypes = nil
-	file_conf_proto_depIdxs = nil
+	File_internal_conf_conf_proto = out.File
+	file_internal_conf_conf_proto_rawDesc = nil
+	file_internal_conf_conf_proto_goTypes = nil
+	file_internal_conf_conf_proto_depIdxs = nil
 }
diff --git a/examples/blog/internal/conf/conf.proto b/examples/blog/internal/conf/conf.proto
index afc4de276..4fa50b355 100644
--- a/examples/blog/internal/conf/conf.proto
+++ b/examples/blog/internal/conf/conf.proto
@@ -1,7 +1,7 @@
 syntax = "proto3";
 package kratos.internal.conf;
 
-option go_package = ".;conf";
+option go_package = "github.com/go-kratos/kratos/examples/blog/internal/conf;conf";
 
 import "google/protobuf/duration.proto";
 
@@ -41,4 +41,4 @@ message Data {
     }
     Database database = 1;
     Redis redis = 2;
-}
\ No newline at end of file
+}
diff --git a/examples/helloworld/client/main.go b/examples/helloworld/client/main.go
index ba7b4fbdb..7fd9cc00f 100644
--- a/examples/helloworld/client/main.go
+++ b/examples/helloworld/client/main.go
@@ -29,7 +29,7 @@ func callHTTP() {
 	if err != nil {
 		log.Fatal(err)
 	}
-	client := pb.NewGreeterHttpClient(conn)
+	client := pb.NewGreeterHTTPClient(conn)
 	reply, err := client.SayHello(context.Background(), &pb.HelloRequest{Name: "kratos"})
 	if err != nil {
 		log.Fatal(err)
diff --git a/examples/helloworld/helloworld/helloworld.pb.go b/examples/helloworld/helloworld/helloworld.pb.go
index 5a158473e..96274168a 100644
--- a/examples/helloworld/helloworld/helloworld.pb.go
+++ b/examples/helloworld/helloworld/helloworld.pb.go
@@ -2,7 +2,7 @@
 // versions:
 // 	protoc-gen-go v1.26.0
 // 	protoc        v3.14.0
-// source: helloworld.proto
+// source: helloworld/helloworld.proto
 
 package helloworld
 
@@ -33,7 +33,7 @@ type HelloRequest struct {
 func (x *HelloRequest) Reset() {
 	*x = HelloRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_helloworld_proto_msgTypes[0]
+		mi := &file_helloworld_helloworld_proto_msgTypes[0]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -46,7 +46,7 @@ func (x *HelloRequest) String() string {
 func (*HelloRequest) ProtoMessage() {}
 
 func (x *HelloRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_helloworld_proto_msgTypes[0]
+	mi := &file_helloworld_helloworld_proto_msgTypes[0]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -59,7 +59,7 @@ func (x *HelloRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use HelloRequest.ProtoReflect.Descriptor instead.
 func (*HelloRequest) Descriptor() ([]byte, []int) {
-	return file_helloworld_proto_rawDescGZIP(), []int{0}
+	return file_helloworld_helloworld_proto_rawDescGZIP(), []int{0}
 }
 
 func (x *HelloRequest) GetName() string {
@@ -81,7 +81,7 @@ type HelloReply struct {
 func (x *HelloReply) Reset() {
 	*x = HelloReply{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_helloworld_proto_msgTypes[1]
+		mi := &file_helloworld_helloworld_proto_msgTypes[1]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -94,7 +94,7 @@ func (x *HelloReply) String() string {
 func (*HelloReply) ProtoMessage() {}
 
 func (x *HelloReply) ProtoReflect() protoreflect.Message {
-	mi := &file_helloworld_proto_msgTypes[1]
+	mi := &file_helloworld_helloworld_proto_msgTypes[1]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -107,7 +107,7 @@ func (x *HelloReply) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use HelloReply.ProtoReflect.Descriptor instead.
 func (*HelloReply) Descriptor() ([]byte, []int) {
-	return file_helloworld_proto_rawDescGZIP(), []int{1}
+	return file_helloworld_helloworld_proto_rawDescGZIP(), []int{1}
 }
 
 func (x *HelloReply) GetMessage() string {
@@ -117,49 +117,49 @@ func (x *HelloReply) GetMessage() string {
 	return ""
 }
 
-var File_helloworld_proto protoreflect.FileDescriptor
+var File_helloworld_helloworld_proto protoreflect.FileDescriptor
 
-var file_helloworld_proto_rawDesc = []byte{
-	0x0a, 0x10, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x77, 0x6f, 0x72, 0x6c, 0x64, 0x2e, 0x70, 0x72, 0x6f,
-	0x74, 0x6f, 0x12, 0x0a, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x77, 0x6f, 0x72, 0x6c, 0x64, 0x1a, 0x1c,
-	0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2f, 0x61, 0x70, 0x69, 0x2f, 0x61, 0x6e, 0x6e, 0x6f, 0x74,
-	0x61, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x22, 0x0a, 0x0c,
-	0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x12, 0x12, 0x0a, 0x04,
-	0x6e, 0x61, 0x6d, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x6e, 0x61, 0x6d, 0x65,
-	0x22, 0x26, 0x0a, 0x0a, 0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x52, 0x65, 0x70, 0x6c, 0x79, 0x12, 0x18,
-	0x0a, 0x07, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52,
-	0x07, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x32, 0x63, 0x0a, 0x07, 0x47, 0x72, 0x65, 0x65,
-	0x74, 0x65, 0x72, 0x12, 0x58, 0x0a, 0x08, 0x53, 0x61, 0x79, 0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x12,
-	0x18, 0x2e, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x77, 0x6f, 0x72, 0x6c, 0x64, 0x2e, 0x48, 0x65, 0x6c,
-	0x6c, 0x6f, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x16, 0x2e, 0x68, 0x65, 0x6c, 0x6c,
-	0x6f, 0x77, 0x6f, 0x72, 0x6c, 0x64, 0x2e, 0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x52, 0x65, 0x70, 0x6c,
-	0x79, 0x22, 0x1a, 0x82, 0xd3, 0xe4, 0x93, 0x02, 0x14, 0x12, 0x12, 0x2f, 0x68, 0x65, 0x6c, 0x6c,
-	0x6f, 0x77, 0x6f, 0x72, 0x6c, 0x64, 0x2f, 0x7b, 0x6e, 0x61, 0x6d, 0x65, 0x7d, 0x42, 0x3c, 0x5a,
-	0x3a, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x67, 0x6f, 0x2d, 0x6b,
-	0x72, 0x61, 0x74, 0x6f, 0x73, 0x2f, 0x6b, 0x72, 0x61, 0x74, 0x6f, 0x73, 0x2f, 0x65, 0x78, 0x61,
-	0x6d, 0x70, 0x6c, 0x65, 0x73, 0x2f, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x77, 0x6f, 0x72, 0x6c, 0x64,
-	0x2f, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x77, 0x6f, 0x72, 0x6c, 0x64, 0x62, 0x06, 0x70, 0x72, 0x6f,
-	0x74, 0x6f, 0x33,
+var file_helloworld_helloworld_proto_rawDesc = []byte{
+	0x0a, 0x1b, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x77, 0x6f, 0x72, 0x6c, 0x64, 0x2f, 0x68, 0x65, 0x6c,
+	0x6c, 0x6f, 0x77, 0x6f, 0x72, 0x6c, 0x64, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x0a, 0x68,
+	0x65, 0x6c, 0x6c, 0x6f, 0x77, 0x6f, 0x72, 0x6c, 0x64, 0x1a, 0x1c, 0x67, 0x6f, 0x6f, 0x67, 0x6c,
+	0x65, 0x2f, 0x61, 0x70, 0x69, 0x2f, 0x61, 0x6e, 0x6e, 0x6f, 0x74, 0x61, 0x74, 0x69, 0x6f, 0x6e,
+	0x73, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x22, 0x0a, 0x0c, 0x48, 0x65, 0x6c, 0x6c, 0x6f,
+	0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x12, 0x12, 0x0a, 0x04, 0x6e, 0x61, 0x6d, 0x65, 0x18,
+	0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x6e, 0x61, 0x6d, 0x65, 0x22, 0x26, 0x0a, 0x0a, 0x48,
+	0x65, 0x6c, 0x6c, 0x6f, 0x52, 0x65, 0x70, 0x6c, 0x79, 0x12, 0x18, 0x0a, 0x07, 0x6d, 0x65, 0x73,
+	0x73, 0x61, 0x67, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x07, 0x6d, 0x65, 0x73, 0x73,
+	0x61, 0x67, 0x65, 0x32, 0x63, 0x0a, 0x07, 0x47, 0x72, 0x65, 0x65, 0x74, 0x65, 0x72, 0x12, 0x58,
+	0x0a, 0x08, 0x53, 0x61, 0x79, 0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x12, 0x18, 0x2e, 0x68, 0x65, 0x6c,
+	0x6c, 0x6f, 0x77, 0x6f, 0x72, 0x6c, 0x64, 0x2e, 0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x52, 0x65, 0x71,
+	0x75, 0x65, 0x73, 0x74, 0x1a, 0x16, 0x2e, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x77, 0x6f, 0x72, 0x6c,
+	0x64, 0x2e, 0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x52, 0x65, 0x70, 0x6c, 0x79, 0x22, 0x1a, 0x82, 0xd3,
+	0xe4, 0x93, 0x02, 0x14, 0x12, 0x12, 0x2f, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x77, 0x6f, 0x72, 0x6c,
+	0x64, 0x2f, 0x7b, 0x6e, 0x61, 0x6d, 0x65, 0x7d, 0x42, 0x3c, 0x5a, 0x3a, 0x67, 0x69, 0x74, 0x68,
+	0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x67, 0x6f, 0x2d, 0x6b, 0x72, 0x61, 0x74, 0x6f, 0x73,
+	0x2f, 0x6b, 0x72, 0x61, 0x74, 0x6f, 0x73, 0x2f, 0x65, 0x78, 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x73,
+	0x2f, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x77, 0x6f, 0x72, 0x6c, 0x64, 0x2f, 0x68, 0x65, 0x6c, 0x6c,
+	0x6f, 0x77, 0x6f, 0x72, 0x6c, 0x64, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
-	file_helloworld_proto_rawDescOnce sync.Once
-	file_helloworld_proto_rawDescData = file_helloworld_proto_rawDesc
+	file_helloworld_helloworld_proto_rawDescOnce sync.Once
+	file_helloworld_helloworld_proto_rawDescData = file_helloworld_helloworld_proto_rawDesc
 )
 
-func file_helloworld_proto_rawDescGZIP() []byte {
-	file_helloworld_proto_rawDescOnce.Do(func() {
-		file_helloworld_proto_rawDescData = protoimpl.X.CompressGZIP(file_helloworld_proto_rawDescData)
+func file_helloworld_helloworld_proto_rawDescGZIP() []byte {
+	file_helloworld_helloworld_proto_rawDescOnce.Do(func() {
+		file_helloworld_helloworld_proto_rawDescData = protoimpl.X.CompressGZIP(file_helloworld_helloworld_proto_rawDescData)
 	})
-	return file_helloworld_proto_rawDescData
+	return file_helloworld_helloworld_proto_rawDescData
 }
 
-var file_helloworld_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
-var file_helloworld_proto_goTypes = []interface{}{
+var file_helloworld_helloworld_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
+var file_helloworld_helloworld_proto_goTypes = []interface{}{
 	(*HelloRequest)(nil), // 0: helloworld.HelloRequest
 	(*HelloReply)(nil),   // 1: helloworld.HelloReply
 }
-var file_helloworld_proto_depIdxs = []int32{
+var file_helloworld_helloworld_proto_depIdxs = []int32{
 	0, // 0: helloworld.Greeter.SayHello:input_type -> helloworld.HelloRequest
 	1, // 1: helloworld.Greeter.SayHello:output_type -> helloworld.HelloReply
 	1, // [1:2] is the sub-list for method output_type
@@ -169,13 +169,13 @@ var file_helloworld_proto_depIdxs = []int32{
 	0, // [0:0] is the sub-list for field type_name
 }
 
-func init() { file_helloworld_proto_init() }
-func file_helloworld_proto_init() {
-	if File_helloworld_proto != nil {
+func init() { file_helloworld_helloworld_proto_init() }
+func file_helloworld_helloworld_proto_init() {
+	if File_helloworld_helloworld_proto != nil {
 		return
 	}
 	if !protoimpl.UnsafeEnabled {
-		file_helloworld_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+		file_helloworld_helloworld_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*HelloRequest); i {
 			case 0:
 				return &v.state
@@ -187,7 +187,7 @@ func file_helloworld_proto_init() {
 				return nil
 			}
 		}
-		file_helloworld_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+		file_helloworld_helloworld_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*HelloReply); i {
 			case 0:
 				return &v.state
@@ -204,18 +204,18 @@ func file_helloworld_proto_init() {
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_helloworld_proto_rawDesc,
+			RawDescriptor: file_helloworld_helloworld_proto_rawDesc,
 			NumEnums:      0,
 			NumMessages:   2,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
-		GoTypes:           file_helloworld_proto_goTypes,
-		DependencyIndexes: file_helloworld_proto_depIdxs,
-		MessageInfos:      file_helloworld_proto_msgTypes,
+		GoTypes:           file_helloworld_helloworld_proto_goTypes,
+		DependencyIndexes: file_helloworld_helloworld_proto_depIdxs,
+		MessageInfos:      file_helloworld_helloworld_proto_msgTypes,
 	}.Build()
-	File_helloworld_proto = out.File
-	file_helloworld_proto_rawDesc = nil
-	file_helloworld_proto_goTypes = nil
-	file_helloworld_proto_depIdxs = nil
+	File_helloworld_helloworld_proto = out.File
+	file_helloworld_helloworld_proto_rawDesc = nil
+	file_helloworld_helloworld_proto_goTypes = nil
+	file_helloworld_helloworld_proto_depIdxs = nil
 }
diff --git a/examples/helloworld/helloworld/helloworld_grpc.pb.go b/examples/helloworld/helloworld/helloworld_grpc.pb.go
index 6effdc5f2..4e1c32b3d 100644
--- a/examples/helloworld/helloworld/helloworld_grpc.pb.go
+++ b/examples/helloworld/helloworld/helloworld_grpc.pb.go
@@ -99,5 +99,5 @@ var Greeter_ServiceDesc = grpc.ServiceDesc{
 		},
 	},
 	Streams:  []grpc.StreamDesc{},
-	Metadata: "helloworld.proto",
+	Metadata: "helloworld/helloworld.proto",
 }
diff --git a/examples/helloworld/helloworld/helloworld_http.pb.go b/examples/helloworld/helloworld/helloworld_http.pb.go
index c3ec46cab..9e895cf1d 100644
--- a/examples/helloworld/helloworld/helloworld_http.pb.go
+++ b/examples/helloworld/helloworld/helloworld_http.pb.go
@@ -62,19 +62,19 @@ func NewGreeterHandler(srv GreeterHandler, opts ...http1.HandleOption) http.Hand
 	return r
 }
 
-type GreeterHttpClient interface {
+type GreeterHTTPClient interface {
 	SayHello(ctx context.Context, req *HelloRequest, opts ...http1.CallOption) (rsp *HelloReply, err error)
 }
 
-type GreeterHttpClientImpl struct {
+type GreeterHTTPClientImpl struct {
 	cc *http1.Client
 }
 
-func NewGreeterHttpClient(client *http1.Client) GreeterHttpClient {
-	return &GreeterHttpClientImpl{client}
+func NewGreeterHTTPClient(client *http1.Client) GreeterHTTPClient {
+	return &GreeterHTTPClientImpl{client}
 }
 
-func (c *GreeterHttpClientImpl) SayHello(ctx context.Context, in *HelloRequest, opts ...http1.CallOption) (out *HelloReply, err error) {
+func (c *GreeterHTTPClientImpl) SayHello(ctx context.Context, in *HelloRequest, opts ...http1.CallOption) (out *HelloReply, err error) {
 	path := binding.EncodePath("GET", "/helloworld/{name}", in)
 	out = &HelloReply{}
 
diff --git a/examples/proto/echo_service_http.pb.go b/examples/proto/echo_service_http.pb.go
index 5ee31378a..f92595584 100644
--- a/examples/proto/echo_service_http.pb.go
+++ b/examples/proto/echo_service_http.pb.go
@@ -287,7 +287,7 @@ func NewEchoServiceHandler(srv EchoServiceHandler, opts ...http1.HandleOption) h
 	return r
 }
 
-type EchoServiceHttpClient interface {
+type EchoServiceHTTPClient interface {
 	Echo(ctx context.Context, req *SimpleMessage, opts ...http1.CallOption) (rsp *SimpleMessage, err error)
 
 	EchoBody(ctx context.Context, req *SimpleMessage, opts ...http1.CallOption) (rsp *SimpleMessage, err error)
@@ -299,15 +299,15 @@ type EchoServiceHttpClient interface {
 	EchoResponseBody(ctx context.Context, req *DynamicMessageUpdate, opts ...http1.CallOption) (rsp *DynamicMessageUpdate, err error)
 }
 
-type EchoServiceHttpClientImpl struct {
+type EchoServiceHTTPClientImpl struct {
 	cc *http1.Client
 }
 
-func NewEchoServiceHttpClient(client *http1.Client) EchoServiceHttpClient {
-	return &EchoServiceHttpClientImpl{client}
+func NewEchoServiceHTTPClient(client *http1.Client) EchoServiceHTTPClient {
+	return &EchoServiceHTTPClientImpl{client}
 }
 
-func (c *EchoServiceHttpClientImpl) Echo(ctx context.Context, in *SimpleMessage, opts ...http1.CallOption) (out *SimpleMessage, err error) {
+func (c *EchoServiceHTTPClientImpl) Echo(ctx context.Context, in *SimpleMessage, opts ...http1.CallOption) (out *SimpleMessage, err error) {
 	path := binding.EncodePath("POST", "/v1/example/echo/{id}", in)
 	out = &SimpleMessage{}
 
@@ -319,7 +319,7 @@ func (c *EchoServiceHttpClientImpl) Echo(ctx context.Context, in *SimpleMessage,
 	return
 }
 
-func (c *EchoServiceHttpClientImpl) EchoBody(ctx context.Context, in *SimpleMessage, opts ...http1.CallOption) (out *SimpleMessage, err error) {
+func (c *EchoServiceHTTPClientImpl) EchoBody(ctx context.Context, in *SimpleMessage, opts ...http1.CallOption) (out *SimpleMessage, err error) {
 	path := binding.EncodePath("POST", "/v1/example/echo_body", in)
 	out = &SimpleMessage{}
 
@@ -331,7 +331,7 @@ func (c *EchoServiceHttpClientImpl) EchoBody(ctx context.Context, in *SimpleMess
 	return
 }
 
-func (c *EchoServiceHttpClientImpl) EchoDelete(ctx context.Context, in *SimpleMessage, opts ...http1.CallOption) (out *SimpleMessage, err error) {
+func (c *EchoServiceHTTPClientImpl) EchoDelete(ctx context.Context, in *SimpleMessage, opts ...http1.CallOption) (out *SimpleMessage, err error) {
 	path := binding.EncodePath("DELETE", "/v1/example/echo_delete/{id}/{num}", in)
 	out = &SimpleMessage{}
 
@@ -343,7 +343,7 @@ func (c *EchoServiceHttpClientImpl) EchoDelete(ctx context.Context, in *SimpleMe
 	return
 }
 
-func (c *EchoServiceHttpClientImpl) EchoPatch(ctx context.Context, in *DynamicMessageUpdate, opts ...http1.CallOption) (out *DynamicMessageUpdate, err error) {
+func (c *EchoServiceHTTPClientImpl) EchoPatch(ctx context.Context, in *DynamicMessageUpdate, opts ...http1.CallOption) (out *DynamicMessageUpdate, err error) {
 	path := binding.EncodePath("PATCH", "/v1/example/echo_patch", in)
 	out = &DynamicMessageUpdate{}
 
@@ -355,7 +355,7 @@ func (c *EchoServiceHttpClientImpl) EchoPatch(ctx context.Context, in *DynamicMe
 	return
 }
 
-func (c *EchoServiceHttpClientImpl) EchoResponseBody(ctx context.Context, in *DynamicMessageUpdate, opts ...http1.CallOption) (out *DynamicMessageUpdate, err error) {
+func (c *EchoServiceHTTPClientImpl) EchoResponseBody(ctx context.Context, in *DynamicMessageUpdate, opts ...http1.CallOption) (out *DynamicMessageUpdate, err error) {
 	path := binding.EncodePath("POST", "/v1/example/echo_response_body", in)
 	out = &DynamicMessageUpdate{}
 
diff --git a/examples/proto/echo_service_test.go b/examples/proto/echo_service_test.go
index 40373850a..8b3925511 100644
--- a/examples/proto/echo_service_test.go
+++ b/examples/proto/echo_service_test.go
@@ -37,7 +37,7 @@ func (s *echoService) EchoResponseBody(ctx context.Context, m *DynamicMessageUpd
 }
 
 type echoClient struct {
-	client EchoServiceHttpClient
+	client EchoServiceHTTPClient
 }
 
 // post: /v1/example/echo/{id}
@@ -96,7 +96,7 @@ func testEchoClient(t *testing.T, addr string) {
 	}
 	cc, _ := tr.NewClient(context.Background(), tr.WithEndpoint(addr))
 
-	cli := &echoClient{client: NewEchoServiceHttpClient(cc)}
+	cli := &echoClient{client: NewEchoServiceHTTPClient(cc)}
 
 	if out, err = cli.Echo(context.Background(), in); err != nil {
 		t.Fatal(err)
diff --git a/examples/proto/stream_http.pb.go b/examples/proto/stream_http.pb.go
index c1b3e3351..160b0407c 100644
--- a/examples/proto/stream_http.pb.go
+++ b/examples/proto/stream_http.pb.go
@@ -32,13 +32,13 @@ func NewStreamServiceHandler(srv StreamServiceHandler, opts ...http1.HandleOptio
 	return r
 }
 
-type StreamServiceHttpClient interface {
+type StreamServiceHTTPClient interface {
 }
 
-type StreamServiceHttpClientImpl struct {
+type StreamServiceHTTPClientImpl struct {
 	cc *http1.Client
 }
 
-func NewStreamServiceHttpClient(client *http1.Client) StreamServiceHttpClient {
-	return &StreamServiceHttpClientImpl{client}
+func NewStreamServiceHTTPClient(client *http1.Client) StreamServiceHTTPClient {
+	return &StreamServiceHTTPClientImpl{client}
 }
diff --git a/examples/registry/consul/client/main.go b/examples/registry/consul/client/main.go
index 0f18399d4..dfb7d5719 100644
--- a/examples/registry/consul/client/main.go
+++ b/examples/registry/consul/client/main.go
@@ -55,7 +55,7 @@ func callHTTP(cli *api.Client) {
 		log.Fatal(err)
 	}
 	time.Sleep(time.Millisecond * 250)
-	client := helloworld.NewGreeterHttpClient(conn)
+	client := helloworld.NewGreeterHTTPClient(conn)
 	reply, err := client.SayHello(context.Background(), &helloworld.HelloRequest{Name: "kratos_http"})
 	if err != nil {
 		log.Fatal(err)
diff --git a/examples/traces/api/message/message.pb.go b/examples/traces/api/message/message.pb.go
index 06f69a016..ac77ed1ef 100644
--- a/examples/traces/api/message/message.pb.go
+++ b/examples/traces/api/message/message.pb.go
@@ -1,8 +1,8 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
 // 	protoc-gen-go v1.26.0
-// 	protoc        v3.13.0
-// source: message.proto
+// 	protoc        v3.14.0
+// source: message/message.proto
 
 package v1
 
@@ -33,7 +33,7 @@ type GetUserMessageRequest struct {
 func (x *GetUserMessageRequest) Reset() {
 	*x = GetUserMessageRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_message_proto_msgTypes[0]
+		mi := &file_message_message_proto_msgTypes[0]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -46,7 +46,7 @@ func (x *GetUserMessageRequest) String() string {
 func (*GetUserMessageRequest) ProtoMessage() {}
 
 func (x *GetUserMessageRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_message_proto_msgTypes[0]
+	mi := &file_message_message_proto_msgTypes[0]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -59,7 +59,7 @@ func (x *GetUserMessageRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetUserMessageRequest.ProtoReflect.Descriptor instead.
 func (*GetUserMessageRequest) Descriptor() ([]byte, []int) {
-	return file_message_proto_rawDescGZIP(), []int{0}
+	return file_message_message_proto_rawDescGZIP(), []int{0}
 }
 
 func (x *GetUserMessageRequest) GetId() int64 {
@@ -87,7 +87,7 @@ type GetUserMessageReply struct {
 func (x *GetUserMessageReply) Reset() {
 	*x = GetUserMessageReply{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_message_proto_msgTypes[1]
+		mi := &file_message_message_proto_msgTypes[1]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -100,7 +100,7 @@ func (x *GetUserMessageReply) String() string {
 func (*GetUserMessageReply) ProtoMessage() {}
 
 func (x *GetUserMessageReply) ProtoReflect() protoreflect.Message {
-	mi := &file_message_proto_msgTypes[1]
+	mi := &file_message_message_proto_msgTypes[1]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -113,7 +113,7 @@ func (x *GetUserMessageReply) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetUserMessageReply.ProtoReflect.Descriptor instead.
 func (*GetUserMessageReply) Descriptor() ([]byte, []int) {
-	return file_message_proto_rawDescGZIP(), []int{1}
+	return file_message_message_proto_rawDescGZIP(), []int{1}
 }
 
 func (x *GetUserMessageReply) GetMessages() []*Message {
@@ -134,7 +134,7 @@ type Message struct {
 func (x *Message) Reset() {
 	*x = Message{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_message_proto_msgTypes[2]
+		mi := &file_message_message_proto_msgTypes[2]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -147,7 +147,7 @@ func (x *Message) String() string {
 func (*Message) ProtoMessage() {}
 
 func (x *Message) ProtoReflect() protoreflect.Message {
-	mi := &file_message_proto_msgTypes[2]
+	mi := &file_message_message_proto_msgTypes[2]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -160,7 +160,7 @@ func (x *Message) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Message.ProtoReflect.Descriptor instead.
 func (*Message) Descriptor() ([]byte, []int) {
-	return file_message_proto_rawDescGZIP(), []int{2}
+	return file_message_message_proto_rawDescGZIP(), []int{2}
 }
 
 func (x *Message) GetContent() string {
@@ -170,61 +170,61 @@ func (x *Message) GetContent() string {
 	return ""
 }
 
-var File_message_proto protoreflect.FileDescriptor
+var File_message_message_proto protoreflect.FileDescriptor
 
-var file_message_proto_rawDesc = []byte{
-	0x0a, 0x0d, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12,
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-	0x73, 0x65, 0x72, 0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x52, 0x65, 0x70, 0x6c, 0x79, 0x22,
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-	0x63, 0x6f, 0x75, 0x6e, 0x74, 0x7d, 0x3a, 0x01, 0x2a, 0x42, 0x51, 0x0a, 0x0e, 0x61, 0x70, 0x69,
-	0x2e, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x2e, 0x76, 0x31, 0x50, 0x01, 0x5a, 0x3d, 0x67,
-	0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x67, 0x6f, 0x2d, 0x6b, 0x72, 0x61,
-	0x74, 0x6f, 0x73, 0x2f, 0x6b, 0x72, 0x61, 0x74, 0x6f, 0x73, 0x2f, 0x65, 0x78, 0x61, 0x6d, 0x70,
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-	0x6f, 0x74, 0x6f, 0x33,
+var file_message_message_proto_rawDesc = []byte{
+	0x0a, 0x15, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x2f, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67,
+	0x65, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x0e, 0x61, 0x70, 0x69, 0x2e, 0x6d, 0x65, 0x73,
+	0x73, 0x61, 0x67, 0x65, 0x2e, 0x76, 0x31, 0x1a, 0x1c, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2f,
+	0x61, 0x70, 0x69, 0x2f, 0x61, 0x6e, 0x6e, 0x6f, 0x74, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x2e,
+	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x3d, 0x0a, 0x15, 0x47, 0x65, 0x74, 0x55, 0x73, 0x65, 0x72,
+	0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x12, 0x0e,
+	0x0a, 0x02, 0x69, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x03, 0x52, 0x02, 0x69, 0x64, 0x12, 0x14,
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+	0x72, 0x2f, 0x7b, 0x69, 0x64, 0x7d, 0x2f, 0x7b, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x7d, 0x3a, 0x01,
+	0x2a, 0x42, 0x51, 0x0a, 0x0e, 0x61, 0x70, 0x69, 0x2e, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65,
+	0x2e, 0x76, 0x31, 0x50, 0x01, 0x5a, 0x3d, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f,
+	0x6d, 0x2f, 0x67, 0x6f, 0x2d, 0x6b, 0x72, 0x61, 0x74, 0x6f, 0x73, 0x2f, 0x6b, 0x72, 0x61, 0x74,
+	0x6f, 0x73, 0x2f, 0x65, 0x78, 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x73, 0x2f, 0x74, 0x72, 0x61, 0x63,
+	0x65, 0x73, 0x2f, 0x61, 0x70, 0x69, 0x2f, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x2f, 0x76,
+	0x31, 0x3b, 0x76, 0x31, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
-	file_message_proto_rawDescOnce sync.Once
-	file_message_proto_rawDescData = file_message_proto_rawDesc
+	file_message_message_proto_rawDescOnce sync.Once
+	file_message_message_proto_rawDescData = file_message_message_proto_rawDesc
 )
 
-func file_message_proto_rawDescGZIP() []byte {
-	file_message_proto_rawDescOnce.Do(func() {
-		file_message_proto_rawDescData = protoimpl.X.CompressGZIP(file_message_proto_rawDescData)
+func file_message_message_proto_rawDescGZIP() []byte {
+	file_message_message_proto_rawDescOnce.Do(func() {
+		file_message_message_proto_rawDescData = protoimpl.X.CompressGZIP(file_message_message_proto_rawDescData)
 	})
-	return file_message_proto_rawDescData
+	return file_message_message_proto_rawDescData
 }
 
-var file_message_proto_msgTypes = make([]protoimpl.MessageInfo, 3)
-var file_message_proto_goTypes = []interface{}{
+var file_message_message_proto_msgTypes = make([]protoimpl.MessageInfo, 3)
+var file_message_message_proto_goTypes = []interface{}{
 	(*GetUserMessageRequest)(nil), // 0: api.message.v1.GetUserMessageRequest
 	(*GetUserMessageReply)(nil),   // 1: api.message.v1.GetUserMessageReply
 	(*Message)(nil),               // 2: api.message.v1.Message
 }
-var file_message_proto_depIdxs = []int32{
+var file_message_message_proto_depIdxs = []int32{
 	2, // 0: api.message.v1.GetUserMessageReply.messages:type_name -> api.message.v1.Message
 	0, // 1: api.message.v1.MessageService.GetUserMessage:input_type -> api.message.v1.GetUserMessageRequest
 	1, // 2: api.message.v1.MessageService.GetUserMessage:output_type -> api.message.v1.GetUserMessageReply
@@ -235,13 +235,13 @@ var file_message_proto_depIdxs = []int32{
 	0, // [0:1] is the sub-list for field type_name
 }
 
-func init() { file_message_proto_init() }
-func file_message_proto_init() {
-	if File_message_proto != nil {
+func init() { file_message_message_proto_init() }
+func file_message_message_proto_init() {
+	if File_message_message_proto != nil {
 		return
 	}
 	if !protoimpl.UnsafeEnabled {
-		file_message_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+		file_message_message_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*GetUserMessageRequest); i {
 			case 0:
 				return &v.state
@@ -253,7 +253,7 @@ func file_message_proto_init() {
 				return nil
 			}
 		}
-		file_message_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+		file_message_message_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*GetUserMessageReply); i {
 			case 0:
 				return &v.state
@@ -265,7 +265,7 @@ func file_message_proto_init() {
 				return nil
 			}
 		}
-		file_message_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+		file_message_message_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*Message); i {
 			case 0:
 				return &v.state
@@ -282,18 +282,18 @@ func file_message_proto_init() {
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_message_proto_rawDesc,
+			RawDescriptor: file_message_message_proto_rawDesc,
 			NumEnums:      0,
 			NumMessages:   3,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
-		GoTypes:           file_message_proto_goTypes,
-		DependencyIndexes: file_message_proto_depIdxs,
-		MessageInfos:      file_message_proto_msgTypes,
+		GoTypes:           file_message_message_proto_goTypes,
+		DependencyIndexes: file_message_message_proto_depIdxs,
+		MessageInfos:      file_message_message_proto_msgTypes,
 	}.Build()
-	File_message_proto = out.File
-	file_message_proto_rawDesc = nil
-	file_message_proto_goTypes = nil
-	file_message_proto_depIdxs = nil
+	File_message_message_proto = out.File
+	file_message_message_proto_rawDesc = nil
+	file_message_message_proto_goTypes = nil
+	file_message_message_proto_depIdxs = nil
 }
diff --git a/examples/traces/api/message/message_grpc.pb.go b/examples/traces/api/message/message_grpc.pb.go
index 352bd61e9..161dde112 100644
--- a/examples/traces/api/message/message_grpc.pb.go
+++ b/examples/traces/api/message/message_grpc.pb.go
@@ -97,5 +97,5 @@ var MessageService_ServiceDesc = grpc.ServiceDesc{
 		},
 	},
 	Streams:  []grpc.StreamDesc{},
-	Metadata: "message.proto",
+	Metadata: "message/message.proto",
 }
diff --git a/examples/traces/api/user/user.pb.go b/examples/traces/api/user/user.pb.go
index 8022a9445..28e30c548 100644
--- a/examples/traces/api/user/user.pb.go
+++ b/examples/traces/api/user/user.pb.go
@@ -1,8 +1,8 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
 // 	protoc-gen-go v1.26.0
-// 	protoc        v3.13.0
-// source: user.proto
+// 	protoc        v3.14.0
+// source: user/user.proto
 
 package v1
 
@@ -32,7 +32,7 @@ type GetMyMessagesRequest struct {
 func (x *GetMyMessagesRequest) Reset() {
 	*x = GetMyMessagesRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_user_proto_msgTypes[0]
+		mi := &file_user_user_proto_msgTypes[0]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -45,7 +45,7 @@ func (x *GetMyMessagesRequest) String() string {
 func (*GetMyMessagesRequest) ProtoMessage() {}
 
 func (x *GetMyMessagesRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_user_proto_msgTypes[0]
+	mi := &file_user_user_proto_msgTypes[0]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -58,7 +58,7 @@ func (x *GetMyMessagesRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetMyMessagesRequest.ProtoReflect.Descriptor instead.
 func (*GetMyMessagesRequest) Descriptor() ([]byte, []int) {
-	return file_user_proto_rawDescGZIP(), []int{0}
+	return file_user_user_proto_rawDescGZIP(), []int{0}
 }
 
 func (x *GetMyMessagesRequest) GetCount() int64 {
@@ -79,7 +79,7 @@ type GetMyMessagesReply struct {
 func (x *GetMyMessagesReply) Reset() {
 	*x = GetMyMessagesReply{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_user_proto_msgTypes[1]
+		mi := &file_user_user_proto_msgTypes[1]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -92,7 +92,7 @@ func (x *GetMyMessagesReply) String() string {
 func (*GetMyMessagesReply) ProtoMessage() {}
 
 func (x *GetMyMessagesReply) ProtoReflect() protoreflect.Message {
-	mi := &file_user_proto_msgTypes[1]
+	mi := &file_user_user_proto_msgTypes[1]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -105,7 +105,7 @@ func (x *GetMyMessagesReply) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetMyMessagesReply.ProtoReflect.Descriptor instead.
 func (*GetMyMessagesReply) Descriptor() ([]byte, []int) {
-	return file_user_proto_rawDescGZIP(), []int{1}
+	return file_user_user_proto_rawDescGZIP(), []int{1}
 }
 
 func (x *GetMyMessagesReply) GetMessages() []*Message {
@@ -126,7 +126,7 @@ type Message struct {
 func (x *Message) Reset() {
 	*x = Message{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_user_proto_msgTypes[2]
+		mi := &file_user_user_proto_msgTypes[2]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -139,7 +139,7 @@ func (x *Message) String() string {
 func (*Message) ProtoMessage() {}
 
 func (x *Message) ProtoReflect() protoreflect.Message {
-	mi := &file_user_proto_msgTypes[2]
+	mi := &file_user_user_proto_msgTypes[2]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -152,7 +152,7 @@ func (x *Message) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Message.ProtoReflect.Descriptor instead.
 func (*Message) Descriptor() ([]byte, []int) {
-	return file_user_proto_rawDescGZIP(), []int{2}
+	return file_user_user_proto_rawDescGZIP(), []int{2}
 }
 
 func (x *Message) GetContent() string {
@@ -162,58 +162,58 @@ func (x *Message) GetContent() string {
 	return ""
 }
 
-var File_user_proto protoreflect.FileDescriptor
+var File_user_user_proto protoreflect.FileDescriptor
 
-var file_user_proto_rawDesc = []byte{
-	0x0a, 0x0a, 0x75, 0x73, 0x65, 0x72, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x0b, 0x61, 0x70,
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-	0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x73, 0x18, 0x01, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x14, 0x2e,
-	0x61, 0x70, 0x69, 0x2e, 0x75, 0x73, 0x65, 0x72, 0x2e, 0x76, 0x31, 0x2e, 0x4d, 0x65, 0x73, 0x73,
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-	0x65, 0x6e, 0x74, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x07, 0x63, 0x6f, 0x6e, 0x74, 0x65,
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-	0x65, 0x74, 0x4d, 0x79, 0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x73, 0x12, 0x21, 0x2e, 0x61,
-	0x70, 0x69, 0x2e, 0x75, 0x73, 0x65, 0x72, 0x2e, 0x76, 0x31, 0x2e, 0x47, 0x65, 0x74, 0x4d, 0x79,
-	0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x73, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a,
-	0x1f, 0x2e, 0x61, 0x70, 0x69, 0x2e, 0x75, 0x73, 0x65, 0x72, 0x2e, 0x76, 0x31, 0x2e, 0x47, 0x65,
+var file_user_user_proto_rawDesc = []byte{
+	0x0a, 0x0f, 0x75, 0x73, 0x65, 0x72, 0x2f, 0x75, 0x73, 0x65, 0x72, 0x2e, 0x70, 0x72, 0x6f, 0x74,
+	0x6f, 0x12, 0x0b, 0x61, 0x70, 0x69, 0x2e, 0x75, 0x73, 0x65, 0x72, 0x2e, 0x76, 0x31, 0x1a, 0x1c,
+	0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2f, 0x61, 0x70, 0x69, 0x2f, 0x61, 0x6e, 0x6e, 0x6f, 0x74,
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+	0x47, 0x65, 0x74, 0x4d, 0x79, 0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x73, 0x52, 0x65, 0x71,
+	0x75, 0x65, 0x73, 0x74, 0x12, 0x14, 0x0a, 0x05, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x18, 0x01, 0x20,
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-	0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
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+	0x0a, 0x0b, 0x61, 0x70, 0x69, 0x2e, 0x75, 0x73, 0x65, 0x72, 0x2e, 0x76, 0x31, 0x50, 0x01, 0x5a,
+	0x44, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x67, 0x6f, 0x2d, 0x6b,
+	0x72, 0x61, 0x74, 0x6f, 0x73, 0x2f, 0x6b, 0x72, 0x61, 0x74, 0x6f, 0x73, 0x2f, 0x65, 0x78, 0x61,
+	0x6d, 0x70, 0x6c, 0x65, 0x73, 0x2f, 0x6b, 0x72, 0x61, 0x74, 0x6f, 0x73, 0x2d, 0x68, 0x74, 0x74,
+	0x70, 0x2d, 0x67, 0x72, 0x70, 0x63, 0x2f, 0x61, 0x70, 0x69, 0x2f, 0x75, 0x73, 0x65, 0x72, 0x2f,
+	0x76, 0x31, 0x3b, 0x76, 0x31, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
-	file_user_proto_rawDescOnce sync.Once
-	file_user_proto_rawDescData = file_user_proto_rawDesc
+	file_user_user_proto_rawDescOnce sync.Once
+	file_user_user_proto_rawDescData = file_user_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)
+func file_user_user_proto_rawDescGZIP() []byte {
+	file_user_user_proto_rawDescOnce.Do(func() {
+		file_user_user_proto_rawDescData = protoimpl.X.CompressGZIP(file_user_user_proto_rawDescData)
 	})
-	return file_user_proto_rawDescData
+	return file_user_user_proto_rawDescData
 }
 
-var file_user_proto_msgTypes = make([]protoimpl.MessageInfo, 3)
-var file_user_proto_goTypes = []interface{}{
+var file_user_user_proto_msgTypes = make([]protoimpl.MessageInfo, 3)
+var file_user_user_proto_goTypes = []interface{}{
 	(*GetMyMessagesRequest)(nil), // 0: api.user.v1.GetMyMessagesRequest
 	(*GetMyMessagesReply)(nil),   // 1: api.user.v1.GetMyMessagesReply
 	(*Message)(nil),              // 2: api.user.v1.Message
 }
-var file_user_proto_depIdxs = []int32{
+var file_user_user_proto_depIdxs = []int32{
 	2, // 0: api.user.v1.GetMyMessagesReply.messages:type_name -> api.user.v1.Message
 	0, // 1: api.user.v1.User.GetMyMessages:input_type -> api.user.v1.GetMyMessagesRequest
 	1, // 2: api.user.v1.User.GetMyMessages:output_type -> api.user.v1.GetMyMessagesReply
@@ -224,13 +224,13 @@ var file_user_proto_depIdxs = []int32{
 	0, // [0:1] is the sub-list for field type_name
 }
 
-func init() { file_user_proto_init() }
-func file_user_proto_init() {
-	if File_user_proto != nil {
+func init() { file_user_user_proto_init() }
+func file_user_user_proto_init() {
+	if File_user_user_proto != nil {
 		return
 	}
 	if !protoimpl.UnsafeEnabled {
-		file_user_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+		file_user_user_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*GetMyMessagesRequest); i {
 			case 0:
 				return &v.state
@@ -242,7 +242,7 @@ func file_user_proto_init() {
 				return nil
 			}
 		}
-		file_user_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+		file_user_user_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*GetMyMessagesReply); i {
 			case 0:
 				return &v.state
@@ -254,7 +254,7 @@ func file_user_proto_init() {
 				return nil
 			}
 		}
-		file_user_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+		file_user_user_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*Message); i {
 			case 0:
 				return &v.state
@@ -271,18 +271,18 @@ func file_user_proto_init() {
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_user_proto_rawDesc,
+			RawDescriptor: file_user_user_proto_rawDesc,
 			NumEnums:      0,
 			NumMessages:   3,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
-		GoTypes:           file_user_proto_goTypes,
-		DependencyIndexes: file_user_proto_depIdxs,
-		MessageInfos:      file_user_proto_msgTypes,
+		GoTypes:           file_user_user_proto_goTypes,
+		DependencyIndexes: file_user_user_proto_depIdxs,
+		MessageInfos:      file_user_user_proto_msgTypes,
 	}.Build()
-	File_user_proto = out.File
-	file_user_proto_rawDesc = nil
-	file_user_proto_goTypes = nil
-	file_user_proto_depIdxs = nil
+	File_user_user_proto = out.File
+	file_user_user_proto_rawDesc = nil
+	file_user_user_proto_goTypes = nil
+	file_user_user_proto_depIdxs = nil
 }
diff --git a/examples/traces/api/user/user_grpc.pb.go b/examples/traces/api/user/user_grpc.pb.go
index 302231c20..3960f2f18 100644
--- a/examples/traces/api/user/user_grpc.pb.go
+++ b/examples/traces/api/user/user_grpc.pb.go
@@ -97,5 +97,5 @@ var User_ServiceDesc = grpc.ServiceDesc{
 		},
 	},
 	Streams:  []grpc.StreamDesc{},
-	Metadata: "user.proto",
+	Metadata: "user/user.proto",
 }