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48 lines
1022 B
48 lines
1022 B
9 years ago
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package migrations
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import (
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"errors"
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"github.com/go-xorm/xorm"
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)
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type migration func(*xorm.Engine) error
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// The version table. Should have only one row with id==1
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type Version struct {
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Id int64 `xorm:"pk"`
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Version int64
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}
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// This is a sequence of migrations. Add new migrations to the bottom of the list.
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// If you want to "retire" a migration, replace it with "expiredMigration"
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var migrations = []migration{}
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// Migrate database to current version
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func Migrate(x *xorm.Engine) error {
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x.Sync(new(Version))
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currentVersion := &Version{Id: 1}
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has, err := x.Get(currentVersion)
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if err != nil {
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return err
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}
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if !has {
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_, err = x.InsertOne(currentVersion)
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}
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v := currentVersion.Version
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for i, migration := range migrations[v:] {
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if err = migration(x); err != nil {
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return err
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}
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currentVersion.Version = v + int64(i) + 1
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x.Id(1).Update(currentVersion)
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}
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return nil
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}
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func expiredMigration(x *xorm.Engine) error {
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return errors.New("You are migrating from a too old gogs version")
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}
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