添加了节点服务器，各个服务器之间支持多对多

2026-02-04 14:22:26 +08:00 · 2022-12-24 04:14:33 +08:00
parent 16dd9c1e87
commit 7e86669628
92 changed files with 1429 additions and 287 deletions
--- a/node/api/api.natsrpc.pb.go
+++ b/node/api/api.natsrpc.pb.go
@@ -0,0 +1,70 @@
+// Code generated by protoc-gen-natsrpc. DO NOT EDIT.
+// versions:
+// - protoc-gen-natsrpc v0.5.0
+// source: api.proto
+
+package api
+
+import (
+	context "context"
+	fmt "fmt"
+	natsrpc "github.com/byebyebruce/natsrpc"
+	nats_go "github.com/nats-io/nats.go"
+	proto "google.golang.org/protobuf/proto"
+)
+
+var _ = new(context.Context)
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = natsrpc.Version
+var _ = nats_go.Version
+
+// 节点服务器注册发现服务
+type DiscoveryNATSRPCServer interface {
+	RegisterServer(ctx context.Context, req *RegisterServerReq) (*RegisterServerRsp, error)
+	GetServerAppId(ctx context.Context, req *GetServerAppIdReq) (*GetServerAppIdRsp, error)
+	GetRegionEc2B(ctx context.Context, req *NullMsg) (*RegionEc2B, error)
+}
+
+// RegisterDiscoveryNATSRPCServer register Discovery service
+func RegisterDiscoveryNATSRPCServer(server *natsrpc.Server, s DiscoveryNATSRPCServer, opts ...natsrpc.ServiceOption) (natsrpc.IService, error) {
+	return server.Register("hk4e.node.api.Discovery", s, opts...)
+}
+
+// 节点服务器注册发现服务
+type DiscoveryNATSRPCClient interface {
+	RegisterServer(ctx context.Context, req *RegisterServerReq, opt ...natsrpc.CallOption) (*RegisterServerRsp, error)
+	GetServerAppId(ctx context.Context, req *GetServerAppIdReq, opt ...natsrpc.CallOption) (*GetServerAppIdRsp, error)
+	GetRegionEc2B(ctx context.Context, req *NullMsg, opt ...natsrpc.CallOption) (*RegionEc2B, error)
+}
+
+type _DiscoveryNATSRPCClient struct {
+	c *natsrpc.Client
+}
+
+// NewDiscoveryNATSRPCClient
+func NewDiscoveryNATSRPCClient(enc *nats_go.EncodedConn, opts ...natsrpc.ClientOption) (DiscoveryNATSRPCClient, error) {
+	c, err := natsrpc.NewClient(enc, "hk4e.node.api.Discovery", opts...)
+	if err != nil {
+		return nil, err
+	}
+	ret := &_DiscoveryNATSRPCClient{
+		c: c,
+	}
+	return ret, nil
+}
+func (c *_DiscoveryNATSRPCClient) RegisterServer(ctx context.Context, req *RegisterServerReq, opt ...natsrpc.CallOption) (*RegisterServerRsp, error) {
+	rep := &RegisterServerRsp{}
+	err := c.c.Request(ctx, "RegisterServer", req, rep, opt...)
+	return rep, err
+}
+func (c *_DiscoveryNATSRPCClient) GetServerAppId(ctx context.Context, req *GetServerAppIdReq, opt ...natsrpc.CallOption) (*GetServerAppIdRsp, error) {
+	rep := &GetServerAppIdRsp{}
+	err := c.c.Request(ctx, "GetServerAppId", req, rep, opt...)
+	return rep, err
+}
+func (c *_DiscoveryNATSRPCClient) GetRegionEc2B(ctx context.Context, req *NullMsg, opt ...natsrpc.CallOption) (*RegionEc2B, error) {
+	rep := &RegionEc2B{}
+	err := c.c.Request(ctx, "GetRegionEc2B", req, rep, opt...)
+	return rep, err
+}
--- a/node/api/api.pb.go
+++ b/node/api/api.pb.go
@@ -0,0 +1,466 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.26.0
+// 	protoc        v3.7.0
+// source: api.proto
+
+package api
+
+import (
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+type NullMsg struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *NullMsg) Reset() {
+	*x = NullMsg{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_api_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *NullMsg) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*NullMsg) ProtoMessage() {}
+
+func (x *NullMsg) ProtoReflect() protoreflect.Message {
+	mi := &file_api_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use NullMsg.ProtoReflect.Descriptor instead.
+func (*NullMsg) Descriptor() ([]byte, []int) {
+	return file_api_proto_rawDescGZIP(), []int{0}
+}
+
+type GetServerAppIdReq struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	ServerType string `protobuf:"bytes,1,opt,name=server_type,json=serverType,proto3" json:"server_type,omitempty"`
+}
+
+func (x *GetServerAppIdReq) Reset() {
+	*x = GetServerAppIdReq{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_api_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *GetServerAppIdReq) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GetServerAppIdReq) ProtoMessage() {}
+
+func (x *GetServerAppIdReq) ProtoReflect() protoreflect.Message {
+	mi := &file_api_proto_msgTypes[1]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use GetServerAppIdReq.ProtoReflect.Descriptor instead.
+func (*GetServerAppIdReq) Descriptor() ([]byte, []int) {
+	return file_api_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *GetServerAppIdReq) GetServerType() string {
+	if x != nil {
+		return x.ServerType
+	}
+	return ""
+}
+
+type GetServerAppIdRsp struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	AppId string `protobuf:"bytes,1,opt,name=app_id,json=appId,proto3" json:"app_id,omitempty"`
+}
+
+func (x *GetServerAppIdRsp) Reset() {
+	*x = GetServerAppIdRsp{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_api_proto_msgTypes[2]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *GetServerAppIdRsp) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GetServerAppIdRsp) ProtoMessage() {}
+
+func (x *GetServerAppIdRsp) ProtoReflect() protoreflect.Message {
+	mi := &file_api_proto_msgTypes[2]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use GetServerAppIdRsp.ProtoReflect.Descriptor instead.
+func (*GetServerAppIdRsp) Descriptor() ([]byte, []int) {
+	return file_api_proto_rawDescGZIP(), []int{2}
+}
+
+func (x *GetServerAppIdRsp) GetAppId() string {
+	if x != nil {
+		return x.AppId
+	}
+	return ""
+}
+
+type RegisterServerReq struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	ServerType string `protobuf:"bytes,1,opt,name=server_type,json=serverType,proto3" json:"server_type,omitempty"`
+}
+
+func (x *RegisterServerReq) Reset() {
+	*x = RegisterServerReq{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_api_proto_msgTypes[3]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *RegisterServerReq) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*RegisterServerReq) ProtoMessage() {}
+
+func (x *RegisterServerReq) ProtoReflect() protoreflect.Message {
+	mi := &file_api_proto_msgTypes[3]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use RegisterServerReq.ProtoReflect.Descriptor instead.
+func (*RegisterServerReq) Descriptor() ([]byte, []int) {
+	return file_api_proto_rawDescGZIP(), []int{3}
+}
+
+func (x *RegisterServerReq) GetServerType() string {
+	if x != nil {
+		return x.ServerType
+	}
+	return ""
+}
+
+type RegisterServerRsp struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	AppId string `protobuf:"bytes,1,opt,name=app_id,json=appId,proto3" json:"app_id,omitempty"`
+}
+
+func (x *RegisterServerRsp) Reset() {
+	*x = RegisterServerRsp{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_api_proto_msgTypes[4]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *RegisterServerRsp) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*RegisterServerRsp) ProtoMessage() {}
+
+func (x *RegisterServerRsp) ProtoReflect() protoreflect.Message {
+	mi := &file_api_proto_msgTypes[4]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use RegisterServerRsp.ProtoReflect.Descriptor instead.
+func (*RegisterServerRsp) Descriptor() ([]byte, []int) {
+	return file_api_proto_rawDescGZIP(), []int{4}
+}
+
+func (x *RegisterServerRsp) GetAppId() string {
+	if x != nil {
+		return x.AppId
+	}
+	return ""
+}
+
+type RegionEc2B struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Data []byte `protobuf:"bytes,1,opt,name=data,proto3" json:"data,omitempty"`
+}
+
+func (x *RegionEc2B) Reset() {
+	*x = RegionEc2B{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_api_proto_msgTypes[5]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *RegionEc2B) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*RegionEc2B) ProtoMessage() {}
+
+func (x *RegionEc2B) ProtoReflect() protoreflect.Message {
+	mi := &file_api_proto_msgTypes[5]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use RegionEc2B.ProtoReflect.Descriptor instead.
+func (*RegionEc2B) Descriptor() ([]byte, []int) {
+	return file_api_proto_rawDescGZIP(), []int{5}
+}
+
+func (x *RegionEc2B) GetData() []byte {
+	if x != nil {
+		return x.Data
+	}
+	return nil
+}
+
+var File_api_proto protoreflect.FileDescriptor
+
+var file_api_proto_rawDesc = []byte{
+	0x0a, 0x09, 0x61, 0x70, 0x69, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x08, 0x6e, 0x6f, 0x64,
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+	0x52, 0x65, 0x67, 0x69, 0x6f, 0x6e, 0x45, 0x63, 0x32, 0x62, 0x22, 0x00, 0x42, 0x13, 0x5a, 0x11,
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+	0x69, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
+
+var (
+	file_api_proto_rawDescOnce sync.Once
+	file_api_proto_rawDescData = file_api_proto_rawDesc
+)
+
+func file_api_proto_rawDescGZIP() []byte {
+	file_api_proto_rawDescOnce.Do(func() {
+		file_api_proto_rawDescData = protoimpl.X.CompressGZIP(file_api_proto_rawDescData)
+	})
+	return file_api_proto_rawDescData
+}
+
+var file_api_proto_msgTypes = make([]protoimpl.MessageInfo, 6)
+var file_api_proto_goTypes = []interface{}{
+	(*NullMsg)(nil),           // 0: node.api.NullMsg
+	(*GetServerAppIdReq)(nil), // 1: node.api.GetServerAppIdReq
+	(*GetServerAppIdRsp)(nil), // 2: node.api.GetServerAppIdRsp
+	(*RegisterServerReq)(nil), // 3: node.api.RegisterServerReq
+	(*RegisterServerRsp)(nil), // 4: node.api.RegisterServerRsp
+	(*RegionEc2B)(nil),        // 5: node.api.RegionEc2b
+}
+var file_api_proto_depIdxs = []int32{
+	3, // 0: node.api.Discovery.RegisterServer:input_type -> node.api.RegisterServerReq
+	1, // 1: node.api.Discovery.GetServerAppId:input_type -> node.api.GetServerAppIdReq
+	0, // 2: node.api.Discovery.GetRegionEc2b:input_type -> node.api.NullMsg
+	4, // 3: node.api.Discovery.RegisterServer:output_type -> node.api.RegisterServerRsp
+	2, // 4: node.api.Discovery.GetServerAppId:output_type -> node.api.GetServerAppIdRsp
+	5, // 5: node.api.Discovery.GetRegionEc2b:output_type -> node.api.RegionEc2b
+	3, // [3:6] is the sub-list for method output_type
+	0, // [0:3] is the sub-list for method input_type
+	0, // [0:0] is the sub-list for extension type_name
+	0, // [0:0] is the sub-list for extension extendee
+	0, // [0:0] is the sub-list for field type_name
+}
+
+func init() { file_api_proto_init() }
+func file_api_proto_init() {
+	if File_api_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_api_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*NullMsg); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_api_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*GetServerAppIdReq); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_api_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*GetServerAppIdRsp); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_api_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*RegisterServerReq); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_api_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*RegisterServerRsp); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_api_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*RegionEc2B); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_api_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   6,
+			NumExtensions: 0,
+			NumServices:   1,
+		},
+		GoTypes:           file_api_proto_goTypes,
+		DependencyIndexes: file_api_proto_depIdxs,
+		MessageInfos:      file_api_proto_msgTypes,
+	}.Build()
+	File_api_proto = out.File
+	file_api_proto_rawDesc = nil
+	file_api_proto_goTypes = nil
+	file_api_proto_depIdxs = nil
+}
--- a/node/api/api.proto
+++ b/node/api/api.proto
@@ -0,0 +1,34 @@
+syntax = "proto3";
+
+package node.api;
+option go_package = "hk4e/node/api;api";
+
+// 节点服务器注册发现服务
+service Discovery {
+  rpc RegisterServer (RegisterServerReq) returns (RegisterServerRsp) {} // 服务器启动注册获取appid
+  rpc GetServerAppId (GetServerAppIdReq) returns (GetServerAppIdRsp) {} // 随机获取某服务器的appid
+  rpc GetRegionEc2b (NullMsg) returns (RegionEc2b) {} // 获取区服密钥信息
+}
+
+message NullMsg {
+}
+
+message GetServerAppIdReq {
+  string server_type = 1;
+}
+
+message GetServerAppIdRsp {
+  string app_id = 1;
+}
+
+message RegisterServerReq {
+  string server_type = 1;
+}
+
+message RegisterServerRsp {
+  string app_id = 1;
+}
+
+message RegionEc2b {
+  bytes data = 1;
+}
--- a/node/api/server_type.go
+++ b/node/api/server_type.go
@@ -0,0 +1,8 @@
+package api
+
+const (
+	GATE        = "GATE"
+	GS          = "GS"
+	FIGHT       = "FIGHT"
+	PATHFINDING = "PATHFINDING"
+)
--- a/node/app/app.go
+++ b/node/app/app.go
@@ -0,0 +1,56 @@
+package app
+
+import (
+	"context"
+	_ "net/http/pprof"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+
+	"hk4e/common/config"
+	"hk4e/node/service"
+	"hk4e/pkg/logger"
+
+	"github.com/nats-io/nats.go"
+)
+
+func Run(ctx context.Context, configFile string) error {
+	config.InitConfig(configFile)
+
+	logger.InitLogger("node")
+	logger.Warn("node start")
+
+	// natsrpc server
+	conn, err := nats.Connect(config.CONF.MQ.NatsUrl)
+	if err != nil {
+		logger.Error("connect nats error: %v", err)
+		return err
+	}
+	defer conn.Close()
+	s, err := service.NewService(conn)
+	if err != nil {
+		return err
+	}
+	defer s.Close()
+
+	c := make(chan os.Signal, 1)
+	signal.Notify(c, syscall.SIGHUP, syscall.SIGQUIT, syscall.SIGTERM, syscall.SIGINT)
+	for {
+		select {
+		case <-ctx.Done():
+			return nil
+		case s := <-c:
+			logger.Warn("get a signal %s", s.String())
+			switch s {
+			case syscall.SIGQUIT, syscall.SIGTERM, syscall.SIGINT:
+				logger.Warn("node exit")
+				time.Sleep(time.Second)
+				return nil
+			case syscall.SIGHUP:
+			default:
+				return nil
+			}
+		}
+	}
+}
--- a/node/service/discovery.go
+++ b/node/service/discovery.go
@@ -0,0 +1,94 @@
+package service
+
+import (
+	"context"
+	"strings"
+
+	"hk4e/common/config"
+	"hk4e/common/region"
+	"hk4e/node/api"
+	"hk4e/pkg/logger"
+	"hk4e/pkg/random"
+
+	"github.com/pkg/errors"
+)
+
+var _ api.DiscoveryNATSRPCServer = (*DiscoveryService)(nil)
+
+type ServerInstance struct {
+	serverType string
+	appId      string
+}
+
+type DiscoveryService struct {
+	regionEc2b *random.Ec2b
+	// TODO 加锁
+	serverInstanceMap map[string]map[string]*ServerInstance
+	serverAppIdMap    map[string]bool
+}
+
+func NewDiscoveryService() *DiscoveryService {
+	r := new(DiscoveryService)
+	_, _, r.regionEc2b = region.InitRegion(config.CONF.Hk4e.KcpAddr, config.CONF.Hk4e.KcpPort, nil)
+	logger.Info("region ec2b create ok, seed: %v", r.regionEc2b.Seed())
+	r.serverInstanceMap = map[string]map[string]*ServerInstance{
+		api.GATE:        make(map[string]*ServerInstance),
+		api.GS:          make(map[string]*ServerInstance),
+		api.FIGHT:       make(map[string]*ServerInstance),
+		api.PATHFINDING: make(map[string]*ServerInstance),
+	}
+	r.serverAppIdMap = make(map[string]bool)
+	return r
+}
+
+func (s *DiscoveryService) RegisterServer(ctx context.Context, req *api.RegisterServerReq) (*api.RegisterServerRsp, error) {
+	logger.Info("register new server, server type: %v", req.ServerType)
+	instMap, exist := s.serverInstanceMap[req.ServerType]
+	if !exist {
+		return nil, errors.New("server type not exist")
+	}
+	var appId string
+	for {
+		appId = strings.ToLower(random.GetRandomStr(8))
+		_, exist := s.serverAppIdMap[appId]
+		if !exist {
+			s.serverAppIdMap[appId] = true
+			break
+		}
+	}
+	instMap[appId] = &ServerInstance{
+		serverType: req.ServerType,
+		appId:      appId,
+	}
+	logger.Info("new server appid is: %v", appId)
+	return &api.RegisterServerRsp{
+		AppId: appId,
+	}, nil
+}
+
+func (s *DiscoveryService) GetServerAppId(ctx context.Context, req *api.GetServerAppIdReq) (*api.GetServerAppIdRsp, error) {
+	logger.Info("get server instance, server type: %v", req.ServerType)
+	instMap, exist := s.serverInstanceMap[req.ServerType]
+	if !exist {
+		return nil, errors.New("server type not exist")
+	}
+	if len(instMap) == 0 {
+		return nil, errors.New("no server found")
+	}
+	var inst *ServerInstance = nil
+	for _, v := range instMap {
+		inst = v
+		break
+	}
+	logger.Info("get server appid is: %v", inst.appId)
+	return &api.GetServerAppIdRsp{
+		AppId: inst.appId,
+	}, nil
+}
+
+func (s *DiscoveryService) GetRegionEc2B(ctx context.Context, req *api.NullMsg) (*api.RegionEc2B, error) {
+	logger.Info("get region ec2b ok")
+	return &api.RegionEc2B{
+		Data: s.regionEc2b.Bytes(),
+	}, nil
+}
--- a/node/service/service.go
+++ b/node/service/service.go
@@ -0,0 +1,32 @@
+package service
+
+import (
+	"hk4e/node/api"
+
+	"github.com/byebyebruce/natsrpc"
+	"github.com/nats-io/nats.go"
+	"github.com/nats-io/nats.go/encoders/protobuf"
+)
+
+type Service struct {
+}
+
+func NewService(conn *nats.Conn) (*Service, error) {
+	enc, err := nats.NewEncodedConn(conn, protobuf.PROTOBUF_ENCODER)
+	if err != nil {
+		return nil, err
+	}
+	svr, err := natsrpc.NewServer(enc)
+	if err != nil {
+		return nil, err
+	}
+	discoveryService := NewDiscoveryService()
+	_, err = api.RegisterDiscoveryNATSRPCServer(svr, discoveryService)
+	if err != nil {
+		return nil, err
+	}
+	return &Service{}, nil
+}
+
+func (s *Service) Close() {
+}