first-commit

models/db/convert.go

@@ -0,0 +1,88 @@
+// Copyright 2019 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package db
+
+import (
+	"fmt"
+	"strconv"
+
+	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/setting"
+
+	"xorm.io/xorm"
+	"xorm.io/xorm/schemas"
+)
+
+// ConvertDatabaseTable converts database and tables from utf8 to utf8mb4 if it's mysql and set ROW_FORMAT=dynamic
+func ConvertDatabaseTable() error {
+	if xormEngine.Dialect().URI().DBType != schemas.MYSQL {
+		return nil
+	}
+
+	r, err := CheckCollations(xormEngine)
+	if err != nil {
+		return err
+	}
+
+	_, err = xormEngine.Exec(fmt.Sprintf("ALTER DATABASE `%s` CHARACTER SET utf8mb4 COLLATE %s", setting.Database.Name, r.ExpectedCollation))
+	if err != nil {
+		return err
+	}
+
+	tables, err := xormEngine.DBMetas()
+	if err != nil {
+		return err
+	}
+	for _, table := range tables {
+		if _, err := xormEngine.Exec(fmt.Sprintf("ALTER TABLE `%s` ROW_FORMAT=dynamic", table.Name)); err != nil {
+			return err
+		}
+
+		if _, err := xormEngine.Exec(fmt.Sprintf("ALTER TABLE `%s` CONVERT TO CHARACTER SET utf8mb4 COLLATE %s", table.Name, r.ExpectedCollation)); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+// ConvertVarcharToNVarchar converts database and tables from varchar to nvarchar if it's mssql
+func ConvertVarcharToNVarchar() error {
+	if xormEngine.Dialect().URI().DBType != schemas.MSSQL {
+		return nil
+	}
+
+	sess := xormEngine.NewSession()
+	defer sess.Close()
+	res, err := sess.QuerySliceString(`SELECT 'ALTER TABLE ' + OBJECT_NAME(SC.object_id) + ' MODIFY SC.name NVARCHAR(' + CONVERT(VARCHAR(5),SC.max_length) + ')'
+FROM SYS.columns SC
+JOIN SYS.types ST
+ON SC.system_type_id = ST.system_type_id
+AND SC.user_type_id = ST.user_type_id
+WHERE ST.name ='varchar'`)
+	if err != nil {
+		return err
+	}
+	for _, row := range res {
+		if len(row) == 1 {
+			if _, err = sess.Exec(row[0]); err != nil {
+				return err
+			}
+		}
+	}
+	return err
+}
+
+// Cell2Int64 converts a xorm.Cell type to int64,
+// and handles possible irregular cases.
+func Cell2Int64(val xorm.Cell) int64 {
+	switch (*val).(type) {
+	case []uint8:
+		log.Trace("Cell2Int64 ([]uint8): %v", *val)
+
+		v, _ := strconv.ParseInt(string((*val).([]uint8)), 10, 64)
+		return v
+	}
+	return (*val).(int64)
+}