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070c57867d
* Fix postgres ID sequences broken by recreate-table Unfortunately there is a subtle problem with recreatetable on postgres which leads to the sequences not being renamed and not being left at 0. Fix #14725 Signed-off-by: Andrew Thornton <art27@cantab.net> * let us try information_schema instead Signed-off-by: Andrew Thornton <art27@cantab.net> * try again Signed-off-by: Andrew Thornton <art27@cantab.net> Co-authored-by: techknowlogick <techknowlogick@gitea.io> Co-authored-by: 6543 <6543@obermui.de>
54 lines
1.6 KiB
Go
54 lines
1.6 KiB
Go
// Copyright 2021 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package migrations
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import (
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"fmt"
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"regexp"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/setting"
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"xorm.io/xorm"
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)
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func fixPostgresIDSequences(x *xorm.Engine) error {
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if !setting.Database.UsePostgreSQL {
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return nil
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}
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sess := x.NewSession()
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defer sess.Close()
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if err := sess.Begin(); err != nil {
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return err
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}
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var sequences []string
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schema := sess.Engine().Dialect().URI().Schema
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sess.Engine().SetSchema("")
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if err := sess.Table("information_schema.sequences").Cols("sequence_name").Where("sequence_name LIKE 'tmp_recreate__%_id_seq%' AND sequence_catalog = ?", setting.Database.Name).Find(&sequences); err != nil {
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log.Error("Unable to find sequences: %v", err)
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return err
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}
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sess.Engine().SetSchema(schema)
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sequenceRegexp := regexp.MustCompile(`tmp_recreate__(\w+)_id_seq.*`)
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for _, sequence := range sequences {
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tableName := sequenceRegexp.FindStringSubmatch(sequence)[1]
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newSequenceName := tableName + "_id_seq"
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if _, err := sess.Exec(fmt.Sprintf("ALTER SEQUENCE `%s` RENAME TO `%s`", sequence, newSequenceName)); err != nil {
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log.Error("Unable to rename %s to %s. Error: %v", sequence, newSequenceName, err)
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return err
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}
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if _, err := sess.Exec(fmt.Sprintf("SELECT setval('%s', COALESCE((SELECT MAX(id)+1 FROM `%s`), 1), false)", newSequenceName, tableName)); err != nil {
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log.Error("Unable to reset sequence %s for %s. Error: %v", newSequenceName, tableName, err)
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return err
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}
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}
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return sess.Commit()
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}
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