remove tidb totally

models/migrations/v27.go

@@ -41,8 +41,6 @@ func convertIntervalToDuration(x *xorm.Engine) (err error) {
 		_, err = sess.Exec("ALTER TABLE mirror MODIFY `interval` BIGINT")
 	case "postgres":
 		_, err = sess.Exec("ALTER TABLE mirror ALTER COLUMN \"interval\" SET DATA TYPE bigint")
-	case "tidb":
-		_, err = sess.Exec("ALTER TABLE mirror MODIFY `interval` BIGINT")
 	case "mssql":
 		_, err = sess.Exec("ALTER TABLE mirror ALTER COLUMN \"interval\" BIGINT")
 	case "sqlite3":

models/migrations/v81.go

@@ -14,8 +14,6 @@ func changeU2FCounterType(x *xorm.Engine) error {
 	var err error
 
 	switch x.Dialect().DriverName() {
-	case "tidb":
-		fallthrough
 	case "mysql":
 		_, err = x.Exec("ALTER TABLE `u2f_registration` MODIFY `counter` BIGINT")
 	case "postgres":

modules/setting/database.go

@@ -23,9 +23,6 @@ var (
 	// EnableSQLite3 use SQLite3, set by build flag
 	EnableSQLite3 bool
 
-	// EnableTiDB enable TiDB, set by build flag
-	EnableTiDB bool
-
 	// Database holds the database settings
 	Database = struct {
 		Type              string
@@ -124,14 +121,6 @@ func DBConnStr() (string, error) {
 			return "", fmt.Errorf("Failed to create directories: %v", err)
 		}
 		connStr = fmt.Sprintf("file:%s?cache=shared&mode=rwc&_busy_timeout=%d", Database.Path, Database.Timeout)
-	case "tidb":
-		if !EnableTiDB {
-			return "", errors.New("this binary version does not build support for TiDB")
-		}
-		if err := os.MkdirAll(path.Dir(Database.Path), os.ModePerm); err != nil {
-			return "", fmt.Errorf("Failed to create directories: %v", err)
-		}
-		connStr = "goleveldb://" + Database.Path
 	default:
 		return "", fmt.Errorf("Unknown database type: %s", Database.Type)
 	}

routers/init.go

@@ -105,9 +105,6 @@ func GlobalInit() {
 	if setting.EnableSQLite3 {
 		log.Info("SQLite3 Supported")
 	}
-	if setting.EnableTiDB {
-		log.Info("TiDB Supported")
-	}
 	checkRunMode()
 
 	if setting.InstallLock && setting.SSH.StartBuiltinServer {