fix: 修复用户积分并发问题，添加乐观锁以及重试机制。

app/user_center/model/user_integral_model.go

@@ -2,12 +2,10 @@ package model
 
 import (
 	"context"
-	"database/sql"
-	"fmt"
 	"git.noahlan.cn/northlan/ntools-go/gorm-zero/gormc"
 	"github.com/pkg/errors"
-	"github.com/zeromicro/go-zero/core/logx"
 	"gorm.io/gorm"
+	"gorm.io/plugin/optimisticlock"
 	"live-service/common/nerr"
 )
 
@@ -20,8 +18,8 @@ type (
 		userIntegralModel
 		Transact(ctx context.Context, tx *gorm.DB, fn func(tx *gorm.DB) error) error
 		InsertTx(ctx context.Context, tx *gorm.DB, data *UserIntegral) error
-		FindIntegral(ctx context.Context, tx *gorm.DB, userId int64) (int64, error)
+		FindOneTx(ctx context.Context, tx *gorm.DB, userId int64) (*UserIntegral, error)
-		UpdateIntegralTx(ctx context.Context, tx *gorm.DB, userId, addon int64) error
+		UpdateTx(ctx context.Context, tx *gorm.DB, integral *UserIntegral) error
 		// ChangeIntegral 用户积分变动
 		ChangeIntegral(ctx context.Context, tx *gorm.DB, userId int64, change int64) (int64, error)
 	}
@@ -47,45 +45,42 @@ func (m *customUserIntegralModel) InsertTx(ctx context.Context, tx *gorm.DB, dat
 	return err
 }
 
-func (m *customUserIntegralModel) UpdateIntegralTx(ctx context.Context, tx *gorm.DB, userId, integral int64) error {
+func (m *customUserIntegralModel) UpdateTx(ctx context.Context, tx *gorm.DB, integral *UserIntegral) error {
-	if integral < 0 {
+	if integral.Integral < 0 {
 		return errors.New("无法将积分更新至负数")
 	}
 	db := withTx(ctx, m.conn, tx)
 
-	result := db.Table(m.table).
+	result := db.Model(&integral).Updates(&UserIntegral{Integral: integral.Integral, Version: optimisticlock.Version{Int64: 1}})
-		Where("`user_id` = ?", userId).
-		Update("`integral`", integral)
 	if result.Error != nil {
 		return result.Error
 	}
-	// TODO 这里得处理一下
 	if result.RowsAffected == 0 {
-		logx.Statf("更新积分影响行数为0, user_id: %d, integral: %d", userId, integral)
+		return ErrRowsAffectedZero
-		return nil
 	}
 	return nil
 }
 
-func (m *customUserIntegralModel) FindIntegral(ctx context.Context, tx *gorm.DB, userId int64) (int64, error) {
+func (m *customUserIntegralModel) FindOneTx(ctx context.Context, tx *gorm.DB, userId int64) (*UserIntegral, error) {
-	var resp int64
+	var resp UserIntegral
-	err := withTx(ctx, m.conn, tx).Table(m.table).
+	err := withTx(ctx, m.conn, tx).Model(&UserIntegral{}).
-		Select(fmt.Sprintf("%s.integral", m.table)).
 		Where("`user_id` = ?", userId).Take(&resp).Error
 	switch err {
 	case nil:
-		return resp, nil
+		return &resp, nil
 	case gormc.ErrNotFound:
-		return 0, ErrNotFound
+		return nil, ErrNotFound
 	default:
-		return 0, err
+		return nil, err
 	}
 }
 
 func (m *customUserIntegralModel) ChangeIntegral(ctx context.Context, tx *gorm.DB, userId int64, change int64) (int64, error) {
 	resp := change
-	err := withTx(ctx, m.conn, tx).Transaction(func(tx *gorm.DB) error {
+	var err error
-		integral, err := m.FindIntegral(ctx, tx, userId)
+	for i := VersionRetryCount; i > 0; i-- {
+		err = withTx(ctx, m.conn, tx).Transaction(func(tx *gorm.DB) error {
+			data, err := m.FindOneTx(ctx, tx, userId)
 			if err != nil {
 				if errors.Is(err, ErrNotFound) {
 					if change < 0 {
@@ -103,17 +98,27 @@ func (m *customUserIntegralModel) ChangeIntegral(ctx context.Context, tx *gorm.D
 					return errors.Wrap(err, "获取当前用户积分失败")
 				}
 			}
-		if integral+change < 0 {
+			if data.Integral+change < 0 {
 				return errors.New("用户积分不足")
 			}
-		if err = m.UpdateIntegralTx(ctx, tx, userId, integral+change); err != nil {
+			data.Integral += change
+			if err = m.UpdateTx(ctx, tx, data); err != nil {
+				if errors.Is(err, ErrRowsAffectedZero) {
+					return err
+				}
 				return errors.Wrap(err, "更新用户积分失败")
 			}
-		resp = integral + change
+			resp = data.Integral
 			return nil
-	}, &sql.TxOptions{
-		Isolation: sql.LevelReadCommitted,
-		ReadOnly:  false,
 		})
+		if err != nil && errors.Is(err, ErrRowsAffectedZero) {
+			// 未能正确更新,直接重试
+			continue
+		} else {
+			// 其它错误退出循环
+			break
+		}
+	}
+
 	return resp, err
 }

app/user_center/model/user_integral_model_gen.go

@@ -5,6 +5,7 @@ package model
 import (
 	"context"
 	"git.noahlan.cn/northlan/ntools-go/gorm-zero/gormc"
+	"gorm.io/plugin/optimisticlock"
 	"time"
 
 	"gorm.io/gorm"
@@ -26,6 +27,7 @@ type (
 	UserIntegral struct {
 		UserId     int64                  `gorm:"column:user_id;primaryKey"`       // 用户ID
 		Integral   int64                  `gorm:"column:integral"`                 // 用户积分，1 RMB：1000
+		Version    optimisticlock.Version `gorm:"column:version"`                  // 乐观锁
 		CreateTime time.Time              `gorm:"column:create_time;default:null"` // 创建时间
 		UpdateTime time.Time              `gorm:"column:update_time;default:null"` // 更新时间
 	}

app/user_center/model/vars.go

@@ -9,6 +9,8 @@ import (
 var ErrNotFound = gorm.ErrRecordNotFound
 var ErrRowsAffectedZero = errors.New("RowsAffected zero")
 
+const VersionRetryCount = 5 // 乐观锁重试次数
+
 // BitBool is an implementation of a bool for the MySQL type BIT(1).
 // This type allows you to avoid wasting an entire byte for MySQL's boolean type TINYINT.
 type BitBool bool

app/user_center/rpc/internal/logic/gift/user_send_gift_logic.go

@@ -65,9 +65,6 @@ func (l *UserSendGiftLogic) UserSendGift(in *pb.UserSendGiftReq) (*pb.UserSendGi
 		if err != nil {
 			return nil, err
 		}
-		if err != nil {
-			return nil, err
-		}
 		resp.Integral = &pb.ChangeIntegralResp{
 			UserId:   in.UserId,
 			Change:   addonIntegral,

app/user_center/rpc/internal/logic/integral/get_user_integral_logic.go

@@ -28,13 +28,13 @@ func NewGetUserIntegralLogic(ctx context.Context, svcCtx *svc.ServiceContext) *G
 // GetUserIntegral 获取用户积分
 func (l *GetUserIntegralLogic) GetUserIntegral(in *pb.UserIdReq) (*pb.UserIntegralResp, error) {
 	// 查询当前用户积分
-	integral, err := l.svcCtx.UserIntegralModel.FindIntegral(l.ctx, nil, in.UserId)
+	integral, err := l.svcCtx.UserIntegralModel.FindOneTx(l.ctx, nil, in.UserId)
 	if err != nil {
 		return nil, errors.Wrapf(nerr.NewWithCode(nerr.DBError), "查询用户积分失败, err:%+v", err)
 	}
 
 	return &pb.UserIntegralResp{
 		UserId:   in.UserId,
-		Integral: integral,
+		Integral: integral.Integral,
 	}, nil
 }

app/user_center/rpc/internal/logic/statistics/stat_pvp_report_logic.go

@@ -67,14 +67,14 @@ func (l *StatPvpReportLogic) StatPvpReport(in *pb.StatPvPReportReq) (*pb.StatPvP
 		battleReportCfg := l.svcCtx.Config.Integral.BattleReport
 		// 名将积分
 		if in.General.Uid > 0 {
-			integral, err := l.svcCtx.UserIntegralModel.ChangeIntegral(l.ctx, nil, in.General.Uid, battleReportCfg.GeneralIntegral)
+			_, err := l.svcCtx.UserIntegralModel.ChangeIntegral(l.ctx, nil, in.General.Uid, battleReportCfg.GeneralIntegral)
 			if err != nil {
 				l.Logger.Errorf("名将积分更新失败, err:%v", err)
 			}
 			resp.General = &pb.StatPvPReportResp_Item{
 				Uid:           in.General.Uid,
 				Uname:         in.General.Uname,
-				AddonIntegral: integral,
+				AddonIntegral: battleReportCfg.GeneralIntegral,
 			}
 		}
 		winItemResp := make([]*pb.StatPvPReportResp_Item, 0, len(in.WinItems))

app/user_center/rpc/internal/svc/service_context.go

@@ -29,12 +29,18 @@ type ServiceContext struct {
 }
 
 func NewServiceContext(c config.Config) *ServiceContext {
+	var logLevel logger.LogLevel
+	if c.Log.Mode == "console" {
+		logLevel = logger.Info
+	} else {
+		logLevel = logger.Warn
+	}
 	gormDb, err := gorm.Open(mysql.Open(c.DB.DataSource), &gorm.Config{
 		Logger: logger.New(
 			log.New(os.Stdout, "\r\n", log.LstdFlags),
 			logger.Config{
 				SlowThreshold:             5 * time.Second,
-				LogLevel:                  logger.Warn,
+				LogLevel:                  logLevel,
 				IgnoreRecordNotFoundError: true,
 				Colorful:                  true,
 			},

go.mod

@@ -12,7 +12,7 @@ require (
 	google.golang.org/grpc v1.45.0
 	google.golang.org/protobuf v1.27.1
 	gorm.io/driver/mysql v1.3.3
-	gorm.io/gorm v1.23.4
+	gorm.io/gorm v1.23.5
 )
 
 require (
@@ -87,6 +87,7 @@ require (
 	google.golang.org/genproto v0.0.0-20220228195345-15d65a4533f7 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gorm.io/plugin/optimisticlock v1.0.7 // indirect
 	k8s.io/api v0.20.12 // indirect
 	k8s.io/apimachinery v0.20.12 // indirect
 	k8s.io/client-go v0.20.12 // indirect

go.sum

@@ -852,6 +852,10 @@ gorm.io/driver/mysql v1.3.3/go.mod h1:ChK6AHbHgDCFZyJp0F+BmVGb06PSIoh9uVYKAlRbb2
 gorm.io/gorm v1.23.1/go.mod h1:l2lP/RyAtc1ynaTjFksBde/O8v9oOGIApu2/xRitmZk=
 gorm.io/gorm v1.23.4 h1:1BKWM67O6CflSLcwGQR7ccfmC4ebOxQrTfOQGRE9wjg=
 gorm.io/gorm v1.23.4/go.mod h1:l2lP/RyAtc1ynaTjFksBde/O8v9oOGIApu2/xRitmZk=
+gorm.io/gorm v1.23.5 h1:TnlF26wScKSvknUC/Rn8t0NLLM22fypYBlvj1+aH6dM=
+gorm.io/gorm v1.23.5/go.mod h1:l2lP/RyAtc1ynaTjFksBde/O8v9oOGIApu2/xRitmZk=
+gorm.io/plugin/optimisticlock v1.0.7 h1:H+UltfbM3twsgMj4WrRLB2YYVdAcVFegj6DdmIuiA7M=
+gorm.io/plugin/optimisticlock v1.0.7/go.mod h1:NTvR8qJnB/+O3yMdVdFPRCOjmzJjIRowhFvQ8HIlODs=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=