diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
new file mode 100644
index 0000000..2282245
--- /dev/null
+++ b/.github/workflows/tests.yml
@@ -0,0 +1,45 @@
+name: Tests
+on:
+  push:
+    branches-ignore:
+      - 'tmp-*'
+  pull_request:
+    branches-ignore:
+      - 'tmp-*'
+
+jobs:
+  tests:
+    name: CI
+    runs-on: ubuntu-latest
+    services:
+      mysql:
+        image: 'mysql:5.7'
+        env:
+          MYSQL_ALLOW_EMPTY_PASSWORD: 1
+        volumes:
+          - /etc/localtime:/etc/localtime:ro
+          - /etc/timezone:/etc/timezone:ro
+        ports:
+          - 3306:3306
+      reids:
+        image: 'redis'
+        volumes:
+          - /etc/localtime:/etc/localtime:ro
+          - /etc/timezone:/etc/timezone:ro
+        ports:
+          - 6379:6379
+    steps:
+      - name: Set up Go 1.15
+        uses: actions/setup-go@v2
+        with:
+          go-version: '1.15'
+
+      - name: Check out code
+        uses: actions/checkout@v2
+
+      - name: Install dependencies
+        run: |
+          go mod download
+
+      - name: Run test cover
+        run: sh helper/test-cover.sh
diff --git a/.gitignore b/.gitignore
index ca6b347..771c69c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,5 +10,6 @@ default.etcd
 */**/*.bolt
 
 # Output file of unit test coverage
-coverage.out
-coverage.out.tmp
\ No newline at end of file
+coverage.*
+profile.*
+test.sh
\ No newline at end of file
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 5fde38f..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,18 +0,0 @@
-language: go
-go:
-  - 1.15.x
-env:
-  - GO111MODULE=on
-branches:
-  only:
-    - master
-    - main
-    - alpha
-services:
-  - mysql
-  - redis-server
-before_install:
-  - go get -t -v ./...
-  - go get github.com/yedf2/goveralls
-script:
-  - $GOPATH/bin/goveralls -envs=TEST_STORE=redis,TEST_STORE=mysql,TEST_STORE=boltdb -flags '-gcflags=-l' -service=travis-ci -ignore="examples/*,dtmgrpc/dtmgimp/*.pb.go,bench/*,test/*"
diff --git a/dtmgrpc/dtmgimp/grpc_clients.go b/dtmgrpc/dtmgimp/grpc_clients.go
index 917f322..17c7b54 100644
--- a/dtmgrpc/dtmgimp/grpc_clients.go
+++ b/dtmgrpc/dtmgimp/grpc_clients.go
@@ -8,9 +8,11 @@ package dtmgimp
 
 import (
 	"fmt"
+	"sync"
+
 	"github.com/yedf/dtm/dtmcli/dtmimp"
+	"github.com/yedf/dtm/dtmgrpc/dtmgpb"
 	grpc "google.golang.org/grpc"
-	"sync"
 )
 
 type rawCodec struct{}
@@ -33,13 +35,13 @@ func (cb rawCodec) Name() string { return "dtm_raw" }
 var normalClients, rawClients sync.Map
 
 // MustGetDtmClient 1
-func MustGetDtmClient(grpcServer string) DtmClient {
-	return NewDtmClient(MustGetGrpcConn(grpcServer, false))
+func MustGetDtmClient(grpcServer string) dtmgpb.DtmClient {
+	return dtmgpb.NewDtmClient(MustGetGrpcConn(grpcServer, false))
 }
 
 // MustGetRawDtmClient must get raw codec grpc conn
-func MustGetRawDtmClient(grpcServer string) DtmClient {
-	return NewDtmClient(MustGetGrpcConn(grpcServer, true))
+func MustGetRawDtmClient(grpcServer string) dtmgpb.DtmClient {
+	return dtmgpb.NewDtmClient(MustGetGrpcConn(grpcServer, true))
 }
 
 // GetGrpcConn 1
diff --git a/dtmgrpc/dtmgimp/utils.go b/dtmgrpc/dtmgimp/utils.go
index ba2e08e..357d0c7 100644
--- a/dtmgrpc/dtmgimp/utils.go
+++ b/dtmgrpc/dtmgimp/utils.go
@@ -10,6 +10,7 @@ import (
 	context "context"
 
 	"github.com/yedf/dtm/dtmcli/dtmimp"
+	"github.com/yedf/dtm/dtmgrpc/dtmgpb"
 	"google.golang.org/grpc/metadata"
 	"google.golang.org/protobuf/proto"
 	emptypb "google.golang.org/protobuf/types/known/emptypb"
@@ -25,10 +26,10 @@ func MustProtoMarshal(msg proto.Message) []byte {
 // DtmGrpcCall make a convenient call to dtm
 func DtmGrpcCall(s *dtmimp.TransBase, operation string) error {
 	reply := emptypb.Empty{}
-	return MustGetGrpcConn(s.Dtm, false).Invoke(context.Background(), "/dtmgimp.Dtm/"+operation, &DtmRequest{
+	return MustGetGrpcConn(s.Dtm, false).Invoke(context.Background(), "/dtmgimp.Dtm/"+operation, &dtmgpb.DtmRequest{
 		Gid:       s.Gid,
 		TransType: s.TransType,
-		TransOptions: &DtmTransOptions{
+		TransOptions: &dtmgpb.DtmTransOptions{
 			WaitResult:    s.WaitResult,
 			TimeoutToFail: s.TimeoutToFail,
 			RetryInterval: s.RetryInterval,
diff --git a/dtmgrpc/dtmgimp/dtmgimp.pb.go b/dtmgrpc/dtmgpb/dtmgimp.pb.go
similarity index 54%
rename from dtmgrpc/dtmgimp/dtmgimp.pb.go
rename to dtmgrpc/dtmgpb/dtmgimp.pb.go
index 3b28c14..89a2526 100644
--- a/dtmgrpc/dtmgimp/dtmgimp.pb.go
+++ b/dtmgrpc/dtmgpb/dtmgimp.pb.go
@@ -1,16 +1,10 @@
-/*
- * Copyright (c) 2021 yedf. All rights reserved.
- * Use of this source code is governed by a BSD-style
- * license that can be found in the LICENSE file.
- */
-
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
 // 	protoc-gen-go v1.27.1
 // 	protoc        v3.17.3
-// source: dtmgrpc/dtmgimp/dtmgimp.proto
+// source: dtmgrpc/dtmgpb/dtmgimp.proto
 
-package dtmgimp
+package dtmgpb
 
 import (
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
@@ -40,7 +34,7 @@ type DtmTransOptions struct {
 func (x *DtmTransOptions) Reset() {
 	*x = DtmTransOptions{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_dtmgrpc_dtmgimp_dtmgimp_proto_msgTypes[0]
+		mi := &file_dtmgrpc_dtmgpb_dtmgimp_proto_msgTypes[0]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -53,7 +47,7 @@ func (x *DtmTransOptions) String() string {
 func (*DtmTransOptions) ProtoMessage() {}
 
 func (x *DtmTransOptions) ProtoReflect() protoreflect.Message {
-	mi := &file_dtmgrpc_dtmgimp_dtmgimp_proto_msgTypes[0]
+	mi := &file_dtmgrpc_dtmgpb_dtmgimp_proto_msgTypes[0]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -66,7 +60,7 @@ func (x *DtmTransOptions) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use DtmTransOptions.ProtoReflect.Descriptor instead.
 func (*DtmTransOptions) Descriptor() ([]byte, []int) {
-	return file_dtmgrpc_dtmgimp_dtmgimp_proto_rawDescGZIP(), []int{0}
+	return file_dtmgrpc_dtmgpb_dtmgimp_proto_rawDescGZIP(), []int{0}
 }
 
 func (x *DtmTransOptions) GetWaitResult() bool {
@@ -108,7 +102,7 @@ type DtmRequest struct {
 func (x *DtmRequest) Reset() {
 	*x = DtmRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_dtmgrpc_dtmgimp_dtmgimp_proto_msgTypes[1]
+		mi := &file_dtmgrpc_dtmgpb_dtmgimp_proto_msgTypes[1]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -121,7 +115,7 @@ func (x *DtmRequest) String() string {
 func (*DtmRequest) ProtoMessage() {}
 
 func (x *DtmRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_dtmgrpc_dtmgimp_dtmgimp_proto_msgTypes[1]
+	mi := &file_dtmgrpc_dtmgpb_dtmgimp_proto_msgTypes[1]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -134,7 +128,7 @@ func (x *DtmRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use DtmRequest.ProtoReflect.Descriptor instead.
 func (*DtmRequest) Descriptor() ([]byte, []int) {
-	return file_dtmgrpc_dtmgimp_dtmgimp_proto_rawDescGZIP(), []int{1}
+	return file_dtmgrpc_dtmgpb_dtmgimp_proto_rawDescGZIP(), []int{1}
 }
 
 func (x *DtmRequest) GetGid() string {
@@ -197,7 +191,7 @@ type DtmGidReply struct {
 func (x *DtmGidReply) Reset() {
 	*x = DtmGidReply{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_dtmgrpc_dtmgimp_dtmgimp_proto_msgTypes[2]
+		mi := &file_dtmgrpc_dtmgpb_dtmgimp_proto_msgTypes[2]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -210,7 +204,7 @@ func (x *DtmGidReply) String() string {
 func (*DtmGidReply) ProtoMessage() {}
 
 func (x *DtmGidReply) ProtoReflect() protoreflect.Message {
-	mi := &file_dtmgrpc_dtmgimp_dtmgimp_proto_msgTypes[2]
+	mi := &file_dtmgrpc_dtmgpb_dtmgimp_proto_msgTypes[2]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -223,7 +217,7 @@ func (x *DtmGidReply) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use DtmGidReply.ProtoReflect.Descriptor instead.
 func (*DtmGidReply) Descriptor() ([]byte, []int) {
-	return file_dtmgrpc_dtmgimp_dtmgimp_proto_rawDescGZIP(), []int{2}
+	return file_dtmgrpc_dtmgpb_dtmgimp_proto_rawDescGZIP(), []int{2}
 }
 
 func (x *DtmGidReply) GetGid() string {
@@ -249,7 +243,7 @@ type DtmBranchRequest struct {
 func (x *DtmBranchRequest) Reset() {
 	*x = DtmBranchRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_dtmgrpc_dtmgimp_dtmgimp_proto_msgTypes[3]
+		mi := &file_dtmgrpc_dtmgpb_dtmgimp_proto_msgTypes[3]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -262,7 +256,7 @@ func (x *DtmBranchRequest) String() string {
 func (*DtmBranchRequest) ProtoMessage() {}
 
 func (x *DtmBranchRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_dtmgrpc_dtmgimp_dtmgimp_proto_msgTypes[3]
+	mi := &file_dtmgrpc_dtmgpb_dtmgimp_proto_msgTypes[3]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -275,7 +269,7 @@ func (x *DtmBranchRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use DtmBranchRequest.ProtoReflect.Descriptor instead.
 func (*DtmBranchRequest) Descriptor() ([]byte, []int) {
-	return file_dtmgrpc_dtmgimp_dtmgimp_proto_rawDescGZIP(), []int{3}
+	return file_dtmgrpc_dtmgpb_dtmgimp_proto_rawDescGZIP(), []int{3}
 }
 
 func (x *DtmBranchRequest) GetGid() string {
@@ -320,93 +314,92 @@ func (x *DtmBranchRequest) GetBusiPayload() []byte {
 	return nil
 }
 
-var File_dtmgrpc_dtmgimp_dtmgimp_proto protoreflect.FileDescriptor
-
-var file_dtmgrpc_dtmgimp_dtmgimp_proto_rawDesc = []byte{
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+var File_dtmgrpc_dtmgpb_dtmgimp_proto protoreflect.FileDescriptor
+
+var file_dtmgrpc_dtmgpb_dtmgimp_proto_rawDesc = []byte{
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 }
 
 var (
-	file_dtmgrpc_dtmgimp_dtmgimp_proto_rawDescOnce sync.Once
-	file_dtmgrpc_dtmgimp_dtmgimp_proto_rawDescData = file_dtmgrpc_dtmgimp_dtmgimp_proto_rawDesc
+	file_dtmgrpc_dtmgpb_dtmgimp_proto_rawDescOnce sync.Once
+	file_dtmgrpc_dtmgpb_dtmgimp_proto_rawDescData = file_dtmgrpc_dtmgpb_dtmgimp_proto_rawDesc
 )
 
-func file_dtmgrpc_dtmgimp_dtmgimp_proto_rawDescGZIP() []byte {
-	file_dtmgrpc_dtmgimp_dtmgimp_proto_rawDescOnce.Do(func() {
-		file_dtmgrpc_dtmgimp_dtmgimp_proto_rawDescData = protoimpl.X.CompressGZIP(file_dtmgrpc_dtmgimp_dtmgimp_proto_rawDescData)
+func file_dtmgrpc_dtmgpb_dtmgimp_proto_rawDescGZIP() []byte {
+	file_dtmgrpc_dtmgpb_dtmgimp_proto_rawDescOnce.Do(func() {
+		file_dtmgrpc_dtmgpb_dtmgimp_proto_rawDescData = protoimpl.X.CompressGZIP(file_dtmgrpc_dtmgpb_dtmgimp_proto_rawDescData)
 	})
-	return file_dtmgrpc_dtmgimp_dtmgimp_proto_rawDescData
+	return file_dtmgrpc_dtmgpb_dtmgimp_proto_rawDescData
 }
 
-var file_dtmgrpc_dtmgimp_dtmgimp_proto_msgTypes = make([]protoimpl.MessageInfo, 5)
-var file_dtmgrpc_dtmgimp_dtmgimp_proto_goTypes = []interface{}{
+var file_dtmgrpc_dtmgpb_dtmgimp_proto_msgTypes = make([]protoimpl.MessageInfo, 5)
+var file_dtmgrpc_dtmgpb_dtmgimp_proto_goTypes = []interface{}{
 	(*DtmTransOptions)(nil),  // 0: dtmgimp.DtmTransOptions
 	(*DtmRequest)(nil),       // 1: dtmgimp.DtmRequest
 	(*DtmGidReply)(nil),      // 2: dtmgimp.DtmGidReply
@@ -414,7 +407,7 @@ var file_dtmgrpc_dtmgimp_dtmgimp_proto_goTypes = []interface{}{
 	nil,                      // 4: dtmgimp.DtmBranchRequest.DataEntry
 	(*emptypb.Empty)(nil),    // 5: google.protobuf.Empty
 }
-var file_dtmgrpc_dtmgimp_dtmgimp_proto_depIdxs = []int32{
+var file_dtmgrpc_dtmgpb_dtmgimp_proto_depIdxs = []int32{
 	0, // 0: dtmgimp.DtmRequest.TransOptions:type_name -> dtmgimp.DtmTransOptions
 	4, // 1: dtmgimp.DtmBranchRequest.Data:type_name -> dtmgimp.DtmBranchRequest.DataEntry
 	5, // 2: dtmgimp.Dtm.NewGid:input_type -> google.protobuf.Empty
@@ -434,13 +427,13 @@ var file_dtmgrpc_dtmgimp_dtmgimp_proto_depIdxs = []int32{
 	0, // [0:2] is the sub-list for field type_name
 }
 
-func init() { file_dtmgrpc_dtmgimp_dtmgimp_proto_init() }
-func file_dtmgrpc_dtmgimp_dtmgimp_proto_init() {
-	if File_dtmgrpc_dtmgimp_dtmgimp_proto != nil {
+func init() { file_dtmgrpc_dtmgpb_dtmgimp_proto_init() }
+func file_dtmgrpc_dtmgpb_dtmgimp_proto_init() {
+	if File_dtmgrpc_dtmgpb_dtmgimp_proto != nil {
 		return
 	}
 	if !protoimpl.UnsafeEnabled {
-		file_dtmgrpc_dtmgimp_dtmgimp_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+		file_dtmgrpc_dtmgpb_dtmgimp_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*DtmTransOptions); i {
 			case 0:
 				return &v.state
@@ -452,7 +445,7 @@ func file_dtmgrpc_dtmgimp_dtmgimp_proto_init() {
 				return nil
 			}
 		}
-		file_dtmgrpc_dtmgimp_dtmgimp_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+		file_dtmgrpc_dtmgpb_dtmgimp_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*DtmRequest); i {
 			case 0:
 				return &v.state
@@ -464,7 +457,7 @@ func file_dtmgrpc_dtmgimp_dtmgimp_proto_init() {
 				return nil
 			}
 		}
-		file_dtmgrpc_dtmgimp_dtmgimp_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+		file_dtmgrpc_dtmgpb_dtmgimp_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*DtmGidReply); i {
 			case 0:
 				return &v.state
@@ -476,7 +469,7 @@ func file_dtmgrpc_dtmgimp_dtmgimp_proto_init() {
 				return nil
 			}
 		}
-		file_dtmgrpc_dtmgimp_dtmgimp_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+		file_dtmgrpc_dtmgpb_dtmgimp_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*DtmBranchRequest); i {
 			case 0:
 				return &v.state
@@ -493,18 +486,18 @@ func file_dtmgrpc_dtmgimp_dtmgimp_proto_init() {
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_dtmgrpc_dtmgimp_dtmgimp_proto_rawDesc,
+			RawDescriptor: file_dtmgrpc_dtmgpb_dtmgimp_proto_rawDesc,
 			NumEnums:      0,
 			NumMessages:   5,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
-		GoTypes:           file_dtmgrpc_dtmgimp_dtmgimp_proto_goTypes,
-		DependencyIndexes: file_dtmgrpc_dtmgimp_dtmgimp_proto_depIdxs,
-		MessageInfos:      file_dtmgrpc_dtmgimp_dtmgimp_proto_msgTypes,
+		GoTypes:           file_dtmgrpc_dtmgpb_dtmgimp_proto_goTypes,
+		DependencyIndexes: file_dtmgrpc_dtmgpb_dtmgimp_proto_depIdxs,
+		MessageInfos:      file_dtmgrpc_dtmgpb_dtmgimp_proto_msgTypes,
 	}.Build()
-	File_dtmgrpc_dtmgimp_dtmgimp_proto = out.File
-	file_dtmgrpc_dtmgimp_dtmgimp_proto_rawDesc = nil
-	file_dtmgrpc_dtmgimp_dtmgimp_proto_goTypes = nil
-	file_dtmgrpc_dtmgimp_dtmgimp_proto_depIdxs = nil
+	File_dtmgrpc_dtmgpb_dtmgimp_proto = out.File
+	file_dtmgrpc_dtmgpb_dtmgimp_proto_rawDesc = nil
+	file_dtmgrpc_dtmgpb_dtmgimp_proto_goTypes = nil
+	file_dtmgrpc_dtmgpb_dtmgimp_proto_depIdxs = nil
 }
diff --git a/dtmgrpc/dtmgimp/dtmgimp.proto b/dtmgrpc/dtmgpb/dtmgimp.proto
similarity index 96%
rename from dtmgrpc/dtmgimp/dtmgimp.proto
rename to dtmgrpc/dtmgpb/dtmgimp.proto
index a6ef5e6..84e3105 100644
--- a/dtmgrpc/dtmgimp/dtmgimp.proto
+++ b/dtmgrpc/dtmgpb/dtmgimp.proto
@@ -1,6 +1,6 @@
 syntax = "proto3";
 
-option go_package = "./dtmgimp";
+option go_package = "./dtmgpb";
 import "google/protobuf/empty.proto";
 
 package dtmgimp;
diff --git a/dtmgrpc/dtmgimp/dtmgimp_grpc.pb.go b/dtmgrpc/dtmgpb/dtmgimp_grpc.pb.go
similarity index 97%
rename from dtmgrpc/dtmgimp/dtmgimp_grpc.pb.go
rename to dtmgrpc/dtmgpb/dtmgimp_grpc.pb.go
index 8d35989..8381443 100644
--- a/dtmgrpc/dtmgimp/dtmgimp_grpc.pb.go
+++ b/dtmgrpc/dtmgpb/dtmgimp_grpc.pb.go
@@ -1,12 +1,6 @@
-/*
- * Copyright (c) 2021 yedf. All rights reserved.
- * Use of this source code is governed by a BSD-style
- * license that can be found in the LICENSE file.
- */
-
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
 
-package dtmgimp
+package dtmgpb
 
 import (
 	context "context"
@@ -248,5 +242,5 @@ var Dtm_ServiceDesc = grpc.ServiceDesc{
 		},
 	},
 	Streams:  []grpc.StreamDesc{},
-	Metadata: "dtmgrpc/dtmgimp/dtmgimp.proto",
+	Metadata: "dtmgrpc/dtmgpb/dtmgimp.proto",
 }
diff --git a/dtmgrpc/tcc.go b/dtmgrpc/tcc.go
index ebc1c59..1b8bebd 100644
--- a/dtmgrpc/tcc.go
+++ b/dtmgrpc/tcc.go
@@ -12,6 +12,7 @@ import (
 
 	"github.com/yedf/dtm/dtmcli/dtmimp"
 	"github.com/yedf/dtm/dtmgrpc/dtmgimp"
+	"github.com/yedf/dtm/dtmgrpc/dtmgpb"
 	"github.com/yedf/dtmdriver"
 	"google.golang.org/protobuf/proto"
 )
@@ -31,7 +32,7 @@ type TccGlobalFunc func(tcc *TccGrpc) error
 func TccGlobalTransaction(dtm string, gid string, tccFunc TccGlobalFunc) (rerr error) {
 	tcc := &TccGrpc{TransBase: *dtmimp.NewTransBase(gid, "tcc", dtm, "")}
 	dc := dtmgimp.MustGetDtmClient(tcc.Dtm)
-	dr := &dtmgimp.DtmRequest{
+	dr := &dtmgpb.DtmRequest{
 		Gid:       tcc.Gid,
 		TransType: tcc.TransType,
 	}
@@ -72,7 +73,7 @@ func TccFromGrpc(ctx context.Context) (*TccGrpc, error) {
 func (t *TccGrpc) CallBranch(busiMsg proto.Message, tryURL string, confirmURL string, cancelURL string, reply interface{}) error {
 	branchID := t.NewSubBranchID()
 	bd, err := proto.Marshal(busiMsg)
-	_, err = dtmgimp.MustGetDtmClient(t.Dtm).RegisterBranch(context.Background(), &dtmgimp.DtmBranchRequest{
+	_, err = dtmgimp.MustGetDtmClient(t.Dtm).RegisterBranch(context.Background(), &dtmgpb.DtmBranchRequest{
 		Gid:         t.Gid,
 		TransType:   t.TransType,
 		BranchID:    branchID,
diff --git a/dtmgrpc/xa.go b/dtmgrpc/xa.go
index c12a7e6..23ba33c 100644
--- a/dtmgrpc/xa.go
+++ b/dtmgrpc/xa.go
@@ -14,6 +14,7 @@ import (
 	"github.com/yedf/dtm/dtmcli"
 	"github.com/yedf/dtm/dtmcli/dtmimp"
 	"github.com/yedf/dtm/dtmgrpc/dtmgimp"
+	"github.com/yedf/dtm/dtmgrpc/dtmgpb"
 	"github.com/yedf/dtmdriver"
 	grpc "google.golang.org/grpc"
 	"google.golang.org/protobuf/proto"
@@ -78,7 +79,7 @@ func (xc *XaGrpcClient) XaLocalTransaction(ctx context.Context, msg proto.Messag
 		if err != nil {
 			return err
 		}
-		_, err = dtmgimp.MustGetDtmClient(xa.Dtm).RegisterBranch(context.Background(), &dtmgimp.DtmBranchRequest{
+		_, err = dtmgimp.MustGetDtmClient(xa.Dtm).RegisterBranch(context.Background(), &dtmgpb.DtmBranchRequest{
 			Gid:         xa.Gid,
 			BranchID:    xa.BranchID,
 			TransType:   xa.TransType,
@@ -93,12 +94,12 @@ func (xc *XaGrpcClient) XaLocalTransaction(ctx context.Context, msg proto.Messag
 func (xc *XaGrpcClient) XaGlobalTransaction(gid string, xaFunc XaGrpcGlobalFunc) error {
 	xa := XaGrpc{TransBase: *dtmimp.NewTransBase(gid, "xa", xc.Server, "")}
 	dc := dtmgimp.MustGetDtmClient(xa.Dtm)
-	req := &dtmgimp.DtmRequest{
+	req := &dtmgpb.DtmRequest{
 		Gid:       gid,
 		TransType: xa.TransType,
 	}
 	return xc.HandleGlobalTrans(&xa.TransBase, func(action string) error {
-		f := map[string]func(context.Context, *dtmgimp.DtmRequest, ...grpc.CallOption) (*emptypb.Empty, error){
+		f := map[string]func(context.Context, *dtmgpb.DtmRequest, ...grpc.CallOption) (*emptypb.Empty, error){
 			"prepare": dc.Prepare,
 			"submit":  dc.Submit,
 			"abort":   dc.Abort,
diff --git a/dtmsvr/api_grpc.go b/dtmsvr/api_grpc.go
index 07e4d0e..4d4daf8 100644
--- a/dtmsvr/api_grpc.go
+++ b/dtmsvr/api_grpc.go
@@ -11,7 +11,7 @@ import (
 
 	"github.com/yedf/dtm/dtmcli"
 	"github.com/yedf/dtm/dtmgrpc/dtmgimp"
-	pb "github.com/yedf/dtm/dtmgrpc/dtmgimp"
+	pb "github.com/yedf/dtm/dtmgrpc/dtmgpb"
 	"google.golang.org/protobuf/types/known/emptypb"
 )
 
@@ -20,8 +20,8 @@ type dtmServer struct {
 	pb.UnimplementedDtmServer
 }
 
-func (s *dtmServer) NewGid(ctx context.Context, in *emptypb.Empty) (*dtmgimp.DtmGidReply, error) {
-	return &dtmgimp.DtmGidReply{Gid: GenGid()}, nil
+func (s *dtmServer) NewGid(ctx context.Context, in *emptypb.Empty) (*pb.DtmGidReply, error) {
+	return &pb.DtmGidReply{Gid: GenGid()}, nil
 }
 
 func (s *dtmServer) Submit(ctx context.Context, in *pb.DtmRequest) (*emptypb.Empty, error) {
diff --git a/dtmsvr/svr.go b/dtmsvr/svr.go
index af92105..ac0dbf2 100644
--- a/dtmsvr/svr.go
+++ b/dtmsvr/svr.go
@@ -15,6 +15,7 @@ import (
 	"github.com/yedf/dtm/common"
 	"github.com/yedf/dtm/dtmcli/dtmimp"
 	"github.com/yedf/dtm/dtmgrpc/dtmgimp"
+	"github.com/yedf/dtm/dtmgrpc/dtmgpb"
 	"github.com/yedf/dtmdriver"
 	"google.golang.org/grpc"
 )
@@ -34,7 +35,7 @@ func StartSvr() {
 		grpc.UnaryInterceptor(grpc_middleware.ChainUnaryServer(
 			grpc.UnaryServerInterceptor(grpcMetrics), grpc.UnaryServerInterceptor(dtmgimp.GrpcServerLog)),
 		))
-	dtmgimp.RegisterDtmServer(s, &dtmServer{})
+	dtmgpb.RegisterDtmServer(s, &dtmServer{})
 	dtmimp.Logf("grpc listening at %v", lis.Addr())
 	go func() {
 		err := s.Serve(lis)
diff --git a/dtmsvr/trans_class.go b/dtmsvr/trans_class.go
index 4ce6b9e..d8ea01b 100644
--- a/dtmsvr/trans_class.go
+++ b/dtmsvr/trans_class.go
@@ -12,7 +12,7 @@ import (
 	"github.com/gin-gonic/gin"
 	"github.com/yedf/dtm/dtmcli"
 	"github.com/yedf/dtm/dtmcli/dtmimp"
-	"github.com/yedf/dtm/dtmgrpc/dtmgimp"
+	"github.com/yedf/dtm/dtmgrpc/dtmgpb"
 	"github.com/yedf/dtm/dtmsvr/storage"
 )
 
@@ -72,8 +72,8 @@ func TransFromContext(c *gin.Context) *TransGlobal {
 }
 
 // TransFromDtmRequest TransFromContext
-func TransFromDtmRequest(c *dtmgimp.DtmRequest) *TransGlobal {
-	o := &dtmgimp.DtmTransOptions{}
+func TransFromDtmRequest(c *dtmgpb.DtmRequest) *TransGlobal {
+	o := &dtmgpb.DtmTransOptions{}
 	if c.TransOptions != nil {
 		o = c.TransOptions
 	}
diff --git a/examples/base_grpc.go b/examples/base_grpc.go
index d0002b4..3bff6a5 100644
--- a/examples/base_grpc.go
+++ b/examples/base_grpc.go
@@ -19,6 +19,7 @@ import (
 	"github.com/yedf/dtm/dtmgrpc"
 
 	"github.com/yedf/dtm/dtmgrpc/dtmgimp"
+	"github.com/yedf/dtm/dtmgrpc/dtmgpb"
 	grpc "google.golang.org/grpc"
 	codes "google.golang.org/grpc/codes"
 	status "google.golang.org/grpc/status"
@@ -29,7 +30,7 @@ import (
 var BusiGrpc string = fmt.Sprintf("localhost:%d", BusiGrpcPort)
 
 // DtmClient grpc client for dtm
-var DtmClient dtmgimp.DtmClient = nil
+var DtmClient dtmgpb.DtmClient = nil
 
 // XaGrpcClient XA client connection
 var XaGrpcClient *dtmgrpc.XaGrpcClient = nil
@@ -44,7 +45,7 @@ func init() {
 func GrpcStartup() {
 	conn, err := grpc.Dial(DtmGrpcServer, grpc.WithInsecure(), grpc.WithUnaryInterceptor(dtmgimp.GrpcClientLog))
 	dtmimp.FatalIfError(err)
-	DtmClient = dtmgimp.NewDtmClient(conn)
+	DtmClient = dtmgpb.NewDtmClient(conn)
 	dtmimp.Logf("dtm client inited")
 
 	lis, err := net.Listen("tcp", fmt.Sprintf(":%d", BusiGrpcPort))
diff --git a/go.sum b/go.sum
index 6d8821e..a652bd4 100644
--- a/go.sum
+++ b/go.sum
@@ -892,3 +892,4 @@ sigs.k8s.io/structured-merge-diff/v4 v4.1.2/go.mod h1:j/nl6xW8vLS49O8YvXW1ocPhZa
 sigs.k8s.io/yaml v1.1.0/go.mod h1:UJmg0vDUVViEyp3mgSv9WPwZCDxu4rQW1olrI1uml+o=
 sigs.k8s.io/yaml v1.2.0 h1:kr/MCeFWJWTwyaHoR9c8EjH9OumOmoF9YGiZd7lFm/Q=
 sigs.k8s.io/yaml v1.2.0/go.mod h1:yfXDCHCao9+ENCvLSE62v9VSji2MKu5jeNfTrofGhJc=
+
diff --git a/helper/test-cover.sh b/helper/test-cover.sh
new file mode 100644
index 0000000..0bf9fbe
--- /dev/null
+++ b/helper/test-cover.sh
@@ -0,0 +1,13 @@
+set -x
+echo "" > coverage.txt
+for store in redis mysql boltdb; do
+  for d in $(go list ./... | grep -v vendor); do
+    TEST_STORE=$store go test -covermode count -coverprofile=profile.out -coverpkg=github.com/yedf/dtm/common,github.com/yedf/dtm/dtmcli,github.com/yedf/dtm/dtmcli/dtmimp,github.com/yedf/dtm/dtmgrpc,github.com/yedf/dtm/dtmgrpc/dtmgimp,github.com/yedf/dtm/dtmsvr,github.com/yedf/dtm/dtmsvr/storage,github.com/yedf/dtm/dtmsvr/storage/boltdb,github.com/yedf/dtm/dtmsvr/storage/registry -gcflags=-l $d
+      if [ -f profile.out ]; then
+          cat profile.out >> coverage.txt
+          echo > profile.out
+      fi
+  done
+done
+
+curl -s https://codecov.io/bash | bash