feat: support customize dsn for mysql and pg (#6031)

* support for unixsocket to connect to mysql

* feat: customize dsn for mysql and pg

---------

Co-authored-by: Andy Hsu <i@nn.ci>

internal/bootstrap/db.go

@@ -56,14 +56,21 @@ func InitDB() {
 			}
 		case "mysql":
 			{
+				//[username[:password]@][protocol[(address)]]/dbname[?param1=value1&...&paramN=valueN]
 				dsn := fmt.Sprintf("%s:%s@tcp(%s:%d)/%s?charset=utf8mb4&parseTime=True&loc=Local&tls=%s",
 					database.User, database.Password, database.Host, database.Port, database.Name, database.SSLMode)
+				if database.DSN != "" {
+					dsn = database.DSN
+				}
 				dB, err = gorm.Open(mysql.Open(dsn), gormConfig)
 			}
 		case "postgres":
 			{
 				dsn := fmt.Sprintf("host=%s user=%s password=%s dbname=%s port=%d sslmode=%s TimeZone=Asia/Shanghai",
 					database.Host, database.User, database.Password, database.Name, database.Port, database.SSLMode)
+				if database.DSN != "" {
+					dsn = database.DSN
+				}
 				dB, err = gorm.Open(postgres.Open(dsn), gormConfig)
 			}
 		default:

internal/conf/config.go

@@ -17,6 +17,7 @@ type Database struct {
 	DBFile      string `json:"db_file" env:"FILE"`
 	TablePrefix string `json:"table_prefix" env:"TABLE_PREFIX"`
 	SSLMode     string `json:"ssl_mode" env:"SSL_MODE"`
+	DSN         string `json:"dsn" env:"DSN"`
 }
 
 type Scheme struct {