验证码生成逻辑

11 months ago · ad666723dd
parent 421b7e9f45
commit ad666723dd
9 changed files with 507 additions and 35 deletions
--- a/backend/verifyCode/api/verifyCode/verifyCode.pb.go
+++ b/backend/verifyCode/api/verifyCode/verifyCode.pb.go
@ -0,0 +1,288 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.31.0
+// 	protoc        v3.21.6
+// source: api/verifyCode/verifyCode.proto
+
+package verifyCode
+
+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 TYPE int32
+
+const (
+	TYPE_DEFAULT TYPE = 0
+	TYPE_DIGIT   TYPE = 1
+	TYPE_LETTER  TYPE = 2
+	TYPE_MIXED   TYPE = 3
+)
+
+// Enum value maps for TYPE.
+var (
+	TYPE_name = map[int32]string{
+		0: "DEFAULT",
+		1: "DIGIT",
+		2: "LETTER",
+		3: "MIXED",
+	}
+	TYPE_value = map[string]int32{
+		"DEFAULT": 0,
+		"DIGIT":   1,
+		"LETTER":  2,
+		"MIXED":   3,
+	}
+)
+
+func (x TYPE) Enum() *TYPE {
+	p := new(TYPE)
+	*p = x
+	return p
+}
+
+func (x TYPE) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (TYPE) Descriptor() protoreflect.EnumDescriptor {
+	return file_api_verifyCode_verifyCode_proto_enumTypes[0].Descriptor()
+}
+
+func (TYPE) Type() protoreflect.EnumType {
+	return &file_api_verifyCode_verifyCode_proto_enumTypes[0]
+}
+
+func (x TYPE) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Deprecated: Use TYPE.Descriptor instead.
+func (TYPE) EnumDescriptor() ([]byte, []int) {
+	return file_api_verifyCode_verifyCode_proto_rawDescGZIP(), []int{0}
+}
+
+type GetVerifyCodeRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Length uint32 `protobuf:"varint,1,opt,name=length,proto3" json:"length,omitempty"`
+	Type   TYPE   `protobuf:"varint,2,opt,name=type,proto3,enum=api.verifyCode.TYPE" json:"type,omitempty"`
+}
+
+func (x *GetVerifyCodeRequest) Reset() {
+	*x = GetVerifyCodeRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_api_verifyCode_verifyCode_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *GetVerifyCodeRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GetVerifyCodeRequest) ProtoMessage() {}
+
+func (x *GetVerifyCodeRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_api_verifyCode_verifyCode_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 GetVerifyCodeRequest.ProtoReflect.Descriptor instead.
+func (*GetVerifyCodeRequest) Descriptor() ([]byte, []int) {
+	return file_api_verifyCode_verifyCode_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *GetVerifyCodeRequest) GetLength() uint32 {
+	if x != nil {
+		return x.Length
+	}
+	return 0
+}
+
+func (x *GetVerifyCodeRequest) GetType() TYPE {
+	if x != nil {
+		return x.Type
+	}
+	return TYPE_DEFAULT
+}
+
+type GetVerifyCodeReply struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Code string `protobuf:"bytes,1,opt,name=code,proto3" json:"code,omitempty"`
+}
+
+func (x *GetVerifyCodeReply) Reset() {
+	*x = GetVerifyCodeReply{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_api_verifyCode_verifyCode_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *GetVerifyCodeReply) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GetVerifyCodeReply) ProtoMessage() {}
+
+func (x *GetVerifyCodeReply) ProtoReflect() protoreflect.Message {
+	mi := &file_api_verifyCode_verifyCode_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 GetVerifyCodeReply.ProtoReflect.Descriptor instead.
+func (*GetVerifyCodeReply) Descriptor() ([]byte, []int) {
+	return file_api_verifyCode_verifyCode_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *GetVerifyCodeReply) GetCode() string {
+	if x != nil {
+		return x.Code
+	}
+	return ""
+}
+
+var File_api_verifyCode_verifyCode_proto protoreflect.FileDescriptor
+
+var file_api_verifyCode_verifyCode_proto_rawDesc = []byte{
+	0x0a, 0x1f, 0x61, 0x70, 0x69, 0x2f, 0x76, 0x65, 0x72, 0x69, 0x66, 0x79, 0x43, 0x6f, 0x64, 0x65,
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+	0x68, 0x12, 0x28, 0x0a, 0x04, 0x74, 0x79, 0x70, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x0e, 0x32,
+	0x14, 0x2e, 0x61, 0x70, 0x69, 0x2e, 0x76, 0x65, 0x72, 0x69, 0x66, 0x79, 0x43, 0x6f, 0x64, 0x65,
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+	0x79, 0x12, 0x12, 0x0a, 0x04, 0x63, 0x6f, 0x64, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52,
+	0x04, 0x63, 0x6f, 0x64, 0x65, 0x2a, 0x35, 0x0a, 0x04, 0x54, 0x59, 0x50, 0x45, 0x12, 0x0b, 0x0a,
+	0x07, 0x44, 0x45, 0x46, 0x41, 0x55, 0x4c, 0x54, 0x10, 0x00, 0x12, 0x09, 0x0a, 0x05, 0x44, 0x49,
+	0x47, 0x49, 0x54, 0x10, 0x01, 0x12, 0x0a, 0x0a, 0x06, 0x4c, 0x45, 0x54, 0x54, 0x45, 0x52, 0x10,
+	0x02, 0x12, 0x09, 0x0a, 0x05, 0x4d, 0x49, 0x58, 0x45, 0x44, 0x10, 0x03, 0x32, 0x67, 0x0a, 0x0a,
+	0x56, 0x65, 0x72, 0x69, 0x66, 0x79, 0x43, 0x6f, 0x64, 0x65, 0x12, 0x59, 0x0a, 0x0d, 0x47, 0x65,
+	0x74, 0x56, 0x65, 0x72, 0x69, 0x66, 0x79, 0x43, 0x6f, 0x64, 0x65, 0x12, 0x24, 0x2e, 0x61, 0x70,
+	0x69, 0x2e, 0x76, 0x65, 0x72, 0x69, 0x66, 0x79, 0x43, 0x6f, 0x64, 0x65, 0x2e, 0x47, 0x65, 0x74,
+	0x56, 0x65, 0x72, 0x69, 0x66, 0x79, 0x43, 0x6f, 0x64, 0x65, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73,
+	0x74, 0x1a, 0x22, 0x2e, 0x61, 0x70, 0x69, 0x2e, 0x76, 0x65, 0x72, 0x69, 0x66, 0x79, 0x43, 0x6f,
+	0x64, 0x65, 0x2e, 0x47, 0x65, 0x74, 0x56, 0x65, 0x72, 0x69, 0x66, 0x79, 0x43, 0x6f, 0x64, 0x65,
+	0x52, 0x65, 0x70, 0x6c, 0x79, 0x42, 0x38, 0x0a, 0x0e, 0x61, 0x70, 0x69, 0x2e, 0x76, 0x65, 0x72,
+	0x69, 0x66, 0x79, 0x43, 0x6f, 0x64, 0x65, 0x50, 0x01, 0x5a, 0x24, 0x76, 0x65, 0x72, 0x69, 0x66,
+	0x79, 0x43, 0x6f, 0x64, 0x65, 0x2f, 0x61, 0x70, 0x69, 0x2f, 0x76, 0x65, 0x72, 0x69, 0x66, 0x79,
+	0x43, 0x6f, 0x64, 0x65, 0x3b, 0x76, 0x65, 0x72, 0x69, 0x66, 0x79, 0x43, 0x6f, 0x64, 0x65, 0x62,
+	0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
+
+var (
+	file_api_verifyCode_verifyCode_proto_rawDescOnce sync.Once
+	file_api_verifyCode_verifyCode_proto_rawDescData = file_api_verifyCode_verifyCode_proto_rawDesc
+)
+
+func file_api_verifyCode_verifyCode_proto_rawDescGZIP() []byte {
+	file_api_verifyCode_verifyCode_proto_rawDescOnce.Do(func() {
+		file_api_verifyCode_verifyCode_proto_rawDescData = protoimpl.X.CompressGZIP(file_api_verifyCode_verifyCode_proto_rawDescData)
+	})
+	return file_api_verifyCode_verifyCode_proto_rawDescData
+}
+
+var file_api_verifyCode_verifyCode_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
+var file_api_verifyCode_verifyCode_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
+var file_api_verifyCode_verifyCode_proto_goTypes = []interface{}{
+	(TYPE)(0),                    // 0: api.verifyCode.TYPE
+	(*GetVerifyCodeRequest)(nil), // 1: api.verifyCode.GetVerifyCodeRequest
+	(*GetVerifyCodeReply)(nil),   // 2: api.verifyCode.GetVerifyCodeReply
+}
+var file_api_verifyCode_verifyCode_proto_depIdxs = []int32{
+	0, // 0: api.verifyCode.GetVerifyCodeRequest.type:type_name -> api.verifyCode.TYPE
+	1, // 1: api.verifyCode.VerifyCode.GetVerifyCode:input_type -> api.verifyCode.GetVerifyCodeRequest
+	2, // 2: api.verifyCode.VerifyCode.GetVerifyCode:output_type -> api.verifyCode.GetVerifyCodeReply
+	2, // [2:3] is the sub-list for method output_type
+	1, // [1:2] is the sub-list for method input_type
+	1, // [1:1] is the sub-list for extension type_name
+	1, // [1:1] is the sub-list for extension extendee
+	0, // [0:1] is the sub-list for field type_name
+}
+
+func init() { file_api_verifyCode_verifyCode_proto_init() }
+func file_api_verifyCode_verifyCode_proto_init() {
+	if File_api_verifyCode_verifyCode_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_api_verifyCode_verifyCode_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*GetVerifyCodeRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_api_verifyCode_verifyCode_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*GetVerifyCodeReply); 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_verifyCode_verifyCode_proto_rawDesc,
+			NumEnums:      1,
+			NumMessages:   2,
+			NumExtensions: 0,
+			NumServices:   1,
+		},
+		GoTypes:           file_api_verifyCode_verifyCode_proto_goTypes,
+		DependencyIndexes: file_api_verifyCode_verifyCode_proto_depIdxs,
+		EnumInfos:         file_api_verifyCode_verifyCode_proto_enumTypes,
+		MessageInfos:      file_api_verifyCode_verifyCode_proto_msgTypes,
+	}.Build()
+	File_api_verifyCode_verifyCode_proto = out.File
+	file_api_verifyCode_verifyCode_proto_rawDesc = nil
+	file_api_verifyCode_verifyCode_proto_goTypes = nil
+	file_api_verifyCode_verifyCode_proto_depIdxs = nil
+}
--- a/backend/verifyCode/api/verifyCode/verifyCode.proto
+++ b/backend/verifyCode/api/verifyCode/verifyCode.proto
@ -0,0 +1,26 @@
+syntax = "proto3";
+
+package api.verifyCode;
+
+option go_package = "verifyCode/api/verifyCode;verifyCode";
+option java_multiple_files = true;
+option java_package = "api.verifyCode";
+
+service VerifyCode {
+  rpc GetVerifyCode (GetVerifyCodeRequest) returns (GetVerifyCodeReply);
+}
+
+enum TYPE {
+  DEFAULT = 0;
+  DIGIT = 1;
+  LETTER = 2;
+  MIXED = 3;
+}
+
+message GetVerifyCodeRequest {
+  uint32 length = 1;
+  TYPE type = 2;
+}
+message GetVerifyCodeReply {
+	string code = 1;
+}
--- a/backend/verifyCode/api/verifyCode/verifyCode_grpc.pb.go
+++ b/backend/verifyCode/api/verifyCode/verifyCode_grpc.pb.go
@ -0,0 +1,109 @@
+// Code generated by protoc-gen-go-grpc. DO NOT EDIT.
+// versions:
+// - protoc-gen-go-grpc v1.3.0
+// - protoc             v3.21.6
+// source: api/verifyCode/verifyCode.proto
+
+package verifyCode
+
+import (
+	context "context"
+	grpc "google.golang.org/grpc"
+	codes "google.golang.org/grpc/codes"
+	status "google.golang.org/grpc/status"
+)
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+// Requires gRPC-Go v1.32.0 or later.
+const _ = grpc.SupportPackageIsVersion7
+
+const (
+	VerifyCode_GetVerifyCode_FullMethodName = "/api.verifyCode.VerifyCode/GetVerifyCode"
+)
+
+// VerifyCodeClient is the client API for VerifyCode service.
+//
+// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
+type VerifyCodeClient interface {
+	GetVerifyCode(ctx context.Context, in *GetVerifyCodeRequest, opts ...grpc.CallOption) (*GetVerifyCodeReply, error)
+}
+
+type verifyCodeClient struct {
+	cc grpc.ClientConnInterface
+}
+
+func NewVerifyCodeClient(cc grpc.ClientConnInterface) VerifyCodeClient {
+	return &verifyCodeClient{cc}
+}
+
+func (c *verifyCodeClient) GetVerifyCode(ctx context.Context, in *GetVerifyCodeRequest, opts ...grpc.CallOption) (*GetVerifyCodeReply, error) {
+	out := new(GetVerifyCodeReply)
+	err := c.cc.Invoke(ctx, VerifyCode_GetVerifyCode_FullMethodName, in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// VerifyCodeServer is the server API for VerifyCode service.
+// All implementations must embed UnimplementedVerifyCodeServer
+// for forward compatibility
+type VerifyCodeServer interface {
+	GetVerifyCode(context.Context, *GetVerifyCodeRequest) (*GetVerifyCodeReply, error)
+	mustEmbedUnimplementedVerifyCodeServer()
+}
+
+// UnimplementedVerifyCodeServer must be embedded to have forward compatible implementations.
+type UnimplementedVerifyCodeServer struct {
+}
+
+func (UnimplementedVerifyCodeServer) GetVerifyCode(context.Context, *GetVerifyCodeRequest) (*GetVerifyCodeReply, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method GetVerifyCode not implemented")
+}
+func (UnimplementedVerifyCodeServer) mustEmbedUnimplementedVerifyCodeServer() {}
+
+// UnsafeVerifyCodeServer may be embedded to opt out of forward compatibility for this service.
+// Use of this interface is not recommended, as added methods to VerifyCodeServer will
+// result in compilation errors.
+type UnsafeVerifyCodeServer interface {
+	mustEmbedUnimplementedVerifyCodeServer()
+}
+
+func RegisterVerifyCodeServer(s grpc.ServiceRegistrar, srv VerifyCodeServer) {
+	s.RegisterService(&VerifyCode_ServiceDesc, srv)
+}
+
+func _VerifyCode_GetVerifyCode_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(GetVerifyCodeRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(VerifyCodeServer).GetVerifyCode(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: VerifyCode_GetVerifyCode_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(VerifyCodeServer).GetVerifyCode(ctx, req.(*GetVerifyCodeRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+// VerifyCode_ServiceDesc is the grpc.ServiceDesc for VerifyCode service.
+// It's only intended for direct use with grpc.RegisterService,
+// and not to be introspected or modified (even as a copy)
+var VerifyCode_ServiceDesc = grpc.ServiceDesc{
+	ServiceName: "api.verifyCode.VerifyCode",
+	HandlerType: (*VerifyCodeServer)(nil),
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "GetVerifyCode",
+			Handler:    _VerifyCode_GetVerifyCode_Handler,
+		},
+	},
+	Streams:  []grpc.StreamDesc{},
+	Metadata: "api/verifyCode/verifyCode.proto",
+}
--- a/backend/verifyCode/cmd/verifyCode/main.go
+++ b/backend/verifyCode/cmd/verifyCode/main.go
@ -2,7 +2,9 @@ package main

 import (
 	"flag"
+	"math/rand"
 	"os"
+	"time"

 	"verifyCode/internal/conf"

@ -80,6 +82,7 @@ func main() {
 	}
 	defer cleanup()

+	rand.Seed(time.Now().UnixNano())
 	// start and wait for stop signal
 	if err := app.Run(); err != nil {
 		panic(err)
--- a/backend/verifyCode/cmd/verifyCode/wire_gen.go
+++ b/backend/verifyCode/cmd/verifyCode/wire_gen.go
@ -31,7 +31,8 @@ func wireApp(confServer *conf.Server, confData *conf.Data, logger log.Logger) (*
 	greeterRepo := data.NewGreeterRepo(dataData, logger)
 	greeterUsecase := biz.NewGreeterUsecase(greeterRepo, logger)
 	greeterService := service.NewGreeterService(greeterUsecase)
-	grpcServer := server.NewGRPCServer(confServer, greeterService, logger)
+	verifyCodeService := service.NewVerifyCodeService()
+	grpcServer := server.NewGRPCServer(confServer, greeterService, verifyCodeService, logger)
 	httpServer := server.NewHTTPServer(confServer, greeterService, logger)
 	app := newApp(logger, grpcServer, httpServer)
 	return app, func() {
--- a/backend/verifyCode/internal/server/grpc.go
+++ b/backend/verifyCode/internal/server/grpc.go
@ -2,6 +2,7 @@ package server

 import (
 	v1 "verifyCode/api/helloworld/v1"
+	"verifyCode/api/verifyCode"
 	"verifyCode/internal/conf"
 	"verifyCode/internal/service"

@ -11,7 +12,10 @@ import (
 )

 // NewGRPCServer new a gRPC server.
-func NewGRPCServer(c *conf.Server, greeter *service.GreeterService, logger log.Logger) *grpc.Server {
+func NewGRPCServer(c *conf.Server,
+	greeter *service.GreeterService,
+	verifyCodeService *service.VerifyCodeService,
+	logger log.Logger) *grpc.Server {
 	var opts = []grpc.ServerOption{
 		grpc.Middleware(
 			recovery.Recovery(),
@ -28,5 +32,6 @@ func NewGRPCServer(c *conf.Server, greeter *service.GreeterService, logger log.L
 	}
 	srv := grpc.NewServer(opts...)
 	v1.RegisterGreeterServer(srv, greeter)
+	verifyCode.RegisterVerifyCodeServer(srv,verifyCodeService)
 	return srv
 }
--- a/backend/verifyCode/internal/service/service.go
+++ b/backend/verifyCode/internal/service/service.go
@ -3,4 +3,4 @@ package service
 import "github.com/google/wire"

 // ProviderSet is service providers.
-var ProviderSet = wire.NewSet(NewGreeterService)
+var ProviderSet = wire.NewSet(NewGreeterService, NewVerifyCodeService)
--- a/backend/verifyCode/internal/service/verifycode.go
+++ b/backend/verifyCode/internal/service/verifycode.go
@ -0,0 +1,69 @@
+package service
+
+import (
+	"context"
+	"fmt"
+	"math/rand"
+	pb "verifyCode/api/verifyCode"
+)
+
+type VerifyCodeService struct {
+	pb.UnimplementedVerifyCodeServer
+}
+
+func NewVerifyCodeService() *VerifyCodeService {
+	return &VerifyCodeService{}
+}
+
+func (s *VerifyCodeService) GetVerifyCode(ctx context.Context, req *pb.GetVerifyCodeRequest) (*pb.GetVerifyCodeReply, error) {
+	return &pb.GetVerifyCodeReply{
+		Code: RandCode(int(req.Length), req.Type),
+	}, nil
+}
+
+func RandCode(l int, t pb.TYPE) string {
+	switch t {
+	case pb.TYPE_DEFAULT:
+		fallthrough
+	case pb.TYPE_DIGIT:
+		return randCode("0123456789", l, 4)
+	case pb.TYPE_LETTER:
+		return randCode("abcdefghijklmnopqrstuvwxyz", l, 5)
+	case pb.TYPE_MIXED:
+		return randCode("0123456789abcdefghijklmnopqrstuvwxyz", l, 5)
+	default:
+
+	}
+	return ""
+}
+
+func randCode(chars string, l int, idxBits int) string {
+	idxMask := 1<<idxBits - 1
+	idxMax := 63 / idxBits
+	result := make([]byte, l)
+	for i, cache, remain := 0, rand.Int63(), idxMax; i < l; {
+		fmt.Println("for:rand.Int63")
+		if 0 == remain {
+			fmt.Println("if:rand.Int63")
+			cache = rand.Int63()
+			remain = idxMax
+		}
+		if randIndex := int(cache & int64(idxMask)); randIndex < len(chars) {
+			result[i] = chars[randIndex]
+			i++
+		}
+		cache >>= idxBits
+		remain--
+	}
+	return string(result)
+}
+
+//func randCode(chars string, l int) string {
+//	charsLen := len(chars)
+//	result := make([]byte, l)
+//	for i := 0; i < l; i++ {
+//		randIndex := rand.Intn(charsLen)
+//		result[i] = chars[randIndex]
+//	}
+//	return string(result)
+//}
--- a/backend/verifyCode/openapi.yaml
+++ b/backend/verifyCode/openapi.yaml
@ -3,37 +3,8 @@

 openapi: 3.0.3
 info:
-    title: Greeter API
-    description: The greeting service definition.
+    title: ""
    version: 0.0.1
-paths:
-    /helloworld/{name}:
-        get:
-            tags:
-                - Greeter
-                - subgroup
-            description: Sends a greeting
-            operationId: Greeter_SayHello
-            parameters:
-                - name: name
-                  in: path
-                  required: true
-                  schema:
-                    type: string
-            responses:
-                "200":
-                    description: OK
-                    content:
-                        application/json:
-                            schema:
-                                $ref: '#/components/schemas/helloworld.v1.HelloReply'
+paths: {}
 components:
-    schemas:
-        helloworld.v1.HelloReply:
-            type: object
-            properties:
-                message:
-                    type: string
-            description: The response message containing the greetings
-tags:
-    - name: Greeter
+    schemas: {}