158 lines
3.9 KiB
Go
158 lines
3.9 KiB
Go
package model
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import (
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"context"
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"encoding/json"
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"fmt"
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"game/common/proto/pb"
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"game/common/serialization"
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"game/common/utils"
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"github.com/fox/fox/log"
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"github.com/go-redis/redis/v8"
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"gorm.io/gorm"
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"time"
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)
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const (
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TableExpire = 7 * 24 * time.Hour // 七天后过期
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)
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type resultT[T any] struct {
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ret T
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//err error
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}
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type iTable interface {
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GetId() uint
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TableName() string
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}
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/*
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T:Table，如果不想操作redis则将rds设置为nil
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*/
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type TableOp[T iTable] struct {
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db *gorm.DB
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rds *redis.Client
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}
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func NewTableOp[T iTable](db *gorm.DB, rds *redis.Client) *TableOp[T] {
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return &TableOp[T]{db: db, rds: rds}
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}
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func (s *TableOp[T]) tableName() string {
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var result resultT[T]
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return result.ret.TableName()
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}
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func (s *TableOp[T]) redisKey(id uint) string {
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return fmt.Sprintf("%s:%d", s.tableName(), id)
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}
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func (s *TableOp[T]) findByRedis(id uint) *T {
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if s.rds == nil {
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return nil
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}
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maps, err := s.rds.HGetAll(context.Background(), s.redisKey(id)).Result()
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if err != nil {
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log.ErrorF("redis-key:%v HGetAll err: %v", s.redisKey(id), err)
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return nil
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}
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if len(maps) == 0 {
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return nil
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}
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jsonByte, _ := json.Marshal(maps)
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var result resultT[T]
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_ = json.Unmarshal(jsonByte, &result.ret)
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log.DebugF("findByRedis redis-key:%v result:%v", s.redisKey(id), result.ret)
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return &result.ret
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}
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func (s *TableOp[T]) writeRedis(id uint, t *T) {
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if s.rds == nil {
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return
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}
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maps := serialization.StructToMap(t)
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if len(maps) == 0 {
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log.ErrorF("table struct is empty:%v", s.tableName())
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}
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s.updateRedis(id, maps)
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}
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func (s *TableOp[T]) updateRedis(id uint, maps map[string]any) {
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if s.rds == nil {
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return
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}
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if err := s.rds.HMSet(context.Background(), s.redisKey(id), maps).Err(); err != nil {
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log.ErrorF("redis-key:%v HMSet err: %v", s.redisKey(id), err)
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}
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_ = s.rds.Expire(context.Background(), s.redisKey(id), TableExpire).Err()
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}
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func (s *TableOp[T]) deleteRedis(id uint) {
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if s.rds == nil {
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return
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}
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_ = s.rds.Del(context.Background(), s.redisKey(id)).Err()
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}
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func (s *TableOp[T]) Create(t *T) (*T, pb.ErrCode) {
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if err := s.db.Create(t).Error; err != nil {
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log.ErrorF("create table:%v err:%v", s.tableName(), err)
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return nil, pb.ErrCode_SystemErr
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}
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s.writeRedis((*t).GetId(), t)
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return t, pb.ErrCode_OK
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}
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func (s *TableOp[T]) Find(id uint) (*T, pb.ErrCode) {
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// 先从redis中查询，redis中没有则从mysql中查询
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if table := s.findByRedis(id); table != nil {
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return table, pb.ErrCode_OK
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}
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var result resultT[T]
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err := s.db.Where("id = ?", id).First(&result.ret).Error
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if err != nil {
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log.DebugF("find table:%v id:%v err:%v", s.tableName(), id, err)
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return nil, pb.ErrCode_SystemErr
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}
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return &result.ret, pb.ErrCode_OK
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}
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// 根据条件查询，只在mysql中查询，无法在redis中查询
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func (s *TableOp[T]) FindCondition(condition map[string]any) (*T, error) {
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var result resultT[T]
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err := s.db.Where(condition).First(&result.ret).Error
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if err != nil {
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log.ErrorF("find table:%v condition:%v err:%v", s.tableName(), utils.JsonMarshal(condition), err)
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return nil, err
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}
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// 查看redis中是否存在该键，不存在则写入数据
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exist, _ := s.rds.Exists(context.Background(), s.redisKey(result.ret.GetId())).Result()
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if exist != 1 {
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s.writeRedis(result.ret.GetId(), &result.ret)
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}
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return &result.ret, nil
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}
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func (s *TableOp[T]) Update(id uint, updates map[string]any) (*T, pb.ErrCode) {
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var result resultT[T]
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err := s.db.Model(&result.ret).Where("id = ?", id).Updates(updates).Error
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if err != nil {
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log.ErrorF("update table:%v id:%v err:%v", s.tableName(), id, err)
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return nil, pb.ErrCode_SystemErr
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}
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s.updateRedis(id, updates)
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return &result.ret, pb.ErrCode_OK
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}
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func (s *TableOp[T]) Delete(id uint) (*T, pb.ErrCode) {
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var result resultT[T]
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err := s.db.Delete(&result.ret, id).Error
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if err != nil {
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log.ErrorF("delete table:%v err:%v", s.tableName(), err)
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return nil, pb.ErrCode_SystemErr
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}
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s.deleteRedis(id)
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return &result.ret, pb.ErrCode_OK
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}
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