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Add command to convert mysql database from utf8 to utf8mb4 (#7144)

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* add command to convert mysql database from utf8 to utf8mb4

* Update cmd/convert.go

Co-Authored-By: John Olheiser <42128690+jolheiser@users.noreply.github.com>

* Update cmd/convert.go

Co-Authored-By: John Olheiser <42128690+jolheiser@users.noreply.github.com>

* Update cmd/convert.go

Co-Authored-By: John Olheiser <42128690+jolheiser@users.noreply.github.com>

* Update models/convert.go

Co-Authored-By: John Olheiser <42128690+jolheiser@users.noreply.github.com>

* Update models/convert.go

Co-Authored-By: John Olheiser <42128690+jolheiser@users.noreply.github.com>

* Update cmd/convert.go

Co-Authored-By: John Olheiser <42128690+jolheiser@users.noreply.github.com>

* Update cmd/convert.go

Co-Authored-By: John Olheiser <42128690+jolheiser@users.noreply.github.com>
This commit is contained in:
Lunny Xiao 2019-06-08 21:53:45 +08:00 committed by GitHub
parent 6fb31a5461
commit 23a2ee3510
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3 changed files with 77 additions and 0 deletions
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49
cmd/convert.go Normal file
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@ -0,0 +1,49 @@
// Copyright 2019 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package cmd
import (
"fmt"
"code.gitea.io/gitea/models"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"github.com/urfave/cli"
)
// CmdConvert represents the available convert sub-command.
var CmdConvert = cli.Command{
Name: "convert",
Usage: "Convert the database",
Description: "A command to convert an existing MySQL database from utf8 to utf8mb4",
Action: runConvert,
}
func runConvert(ctx *cli.Context) error {
if err := initDB(); err != nil {
return err
}
log.Trace("AppPath: %s", setting.AppPath)
log.Trace("AppWorkPath: %s", setting.AppWorkPath)
log.Trace("Custom path: %s", setting.CustomPath)
log.Trace("Log path: %s", setting.LogRootPath)
models.LoadConfigs()
if models.DbCfg.Type != "mysql" {
fmt.Println("This command can only be used with a MySQL database")
return nil
}
if err := models.ConvertUtf8ToUtf8mb4(); err != nil {
log.Fatal("Failed to convert database from utf8 to utf8mb4: %v", err)
return err
}
fmt.Println("Converted successfully, please confirm your database's character set is now utf8mb4")
return nil
}

1
main.go
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@ -67,6 +67,7 @@ arguments - which can alternatively be run by running the subcommand web.`
cmd.CmdGenerate,
cmd.CmdMigrate,
cmd.CmdKeys,
cmd.CmdConvert,
}
// Now adjust these commands to add our global configuration options

27
models/convert.go Normal file
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@ -0,0 +1,27 @@
// Copyright 2019 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package models
import "fmt"
// ConvertUtf8ToUtf8mb4 converts database and tables from utf8 to utf8mb4 if it's mysql
func ConvertUtf8ToUtf8mb4() error {
_, err := x.Exec(fmt.Sprintf("ALTER DATABASE `%s` CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci", DbCfg.Name))
if err != nil {
return err
}
tables, err := x.DBMetas()
if err != nil {
return err
}
for _, table := range tables {
if _, err := x.Exec(fmt.Sprintf("ALTER TABLE `%s` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;", table.Name)); err != nil {
return err
}
}
return nil
}