feat: able to use separated database for table logs

model/main.go

@@ -17,8 +17,9 @@ import (
 )
 
 var DB *gorm.DB
+var LOG_DB *gorm.DB
 
-func createRootAccountIfNeed() error {
+func CreateRootAccountIfNeed() error {
 	var user User
 	//if user.Status != util.UserStatusEnabled {
 	if err := DB.First(&user).Error; err != nil {
@@ -41,9 +42,9 @@ func createRootAccountIfNeed() error {
 	return nil
 }
 
-func chooseDB() (*gorm.DB, error) {
-	if os.Getenv("SQL_DSN") != "" {
-		dsn := os.Getenv("SQL_DSN")
+func chooseDB(envName string) (*gorm.DB, error) {
+	if os.Getenv(envName) != "" {
+		dsn := os.Getenv(envName)
 		if strings.HasPrefix(dsn, "postgres://") {
 			// Use PostgreSQL
 			logger.SysLog("using PostgreSQL as database")
@@ -71,23 +72,22 @@ func chooseDB() (*gorm.DB, error) {
 	})
 }
 
-func InitDB() (err error) {
-	db, err := chooseDB()
+func InitDB(envName string) (db *gorm.DB, err error) {
+	db, err = chooseDB(envName)
 	if err == nil {
 		if config.DebugSQLEnabled {
 			db = db.Debug()
 		}
-		DB = db
-		sqlDB, err := DB.DB()
+		sqlDB, err := db.DB()
 		if err != nil {
-			return err
+			return nil, err
 		}
 		sqlDB.SetMaxIdleConns(env.Int("SQL_MAX_IDLE_CONNS", 100))
 		sqlDB.SetMaxOpenConns(env.Int("SQL_MAX_OPEN_CONNS", 1000))
 		sqlDB.SetConnMaxLifetime(time.Second * time.Duration(env.Int("SQL_MAX_LIFETIME", 60)))
 
 		if !config.IsMasterNode {
-			return nil
+			return db, err
 		}
 		if common.UsingMySQL {
 			_, _ = sqlDB.Exec("DROP INDEX idx_channels_key ON channels;") // TODO: delete this line when most users have upgraded
@@ -95,46 +95,55 @@ func InitDB() (err error) {
 		logger.SysLog("database migration started")
 		err = db.AutoMigrate(&Channel{})
 		if err != nil {
-			return err
+			return nil, err
 		}
 		err = db.AutoMigrate(&Token{})
 		if err != nil {
-			return err
+			return nil, err
 		}
 		err = db.AutoMigrate(&User{})
 		if err != nil {
-			return err
+			return nil, err
 		}
 		err = db.AutoMigrate(&Option{})
 		if err != nil {
-			return err
+			return nil, err
 		}
 		err = db.AutoMigrate(&Redemption{})
 		if err != nil {
-			return err
+			return nil, err
 		}
 		err = db.AutoMigrate(&Ability{})
 		if err != nil {
-			return err
+			return nil, err
 		}
 		err = db.AutoMigrate(&Log{})
 		if err != nil {
-			return err
+			return nil, err
 		}
 		logger.SysLog("database migrated")
-		err = createRootAccountIfNeed()
-		return err
+		return db, err
 	} else {
 		logger.FatalLog(err)
 	}
-	return err
+	return db, err
 }
 
-func CloseDB() error {
-	sqlDB, err := DB.DB()
+func closeDB(db *gorm.DB) error {
+	sqlDB, err := db.DB()
 	if err != nil {
 		return err
 	}
 	err = sqlDB.Close()
 	return err
 }
+
+func CloseDB() error {
+	if LOG_DB != DB {
+		err := closeDB(LOG_DB)
+		if err != nil {
+			return err
+		}
+	}
+	return closeDB(DB)
+}