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package migrations
import (
"errors"
"github.com/go-xorm/xorm"
)
type migration func(*xorm.Engine) error
// The version table. Should have only one row with id==1
type Version struct {
Id int64
Version int64
}
// This is a sequence of migrations. Add new migrations to the bottom of the list.
// If you want to "retire" a migration, replace it with "expiredMigration"
var migrations = []migration{}
// Migrate database to current version
func Migrate(x *xorm.Engine) error {
x.Sync(new(Version))
currentVersion := &Version{Id: 1}
has, err := x.Get(currentVersion)
if err != nil {
return err
} else if !has {
if _, err = x.InsertOne(currentVersion); err != nil {
return err
}
}
v := currentVersion.Version
for i, migration := range migrations[v:] {
if err = migration(x); err != nil {
return err
}
currentVersion.Version = v + int64(i) + 1
x.Id(1).Update(currentVersion)
}
return nil
}
func expiredMigration(x *xorm.Engine) error {
return errors.New("You are migrating from a too old gogs version")
}
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