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fff32e9469
Migrations should never use model structs directly, because the model structs can be different in different releases. e.g. if one migration uses "User" model, it works in the early releases, then one day, when the User model changes, the migration breaks because it will use the new (incorrect) User model, it should only use the old User model. The same to "modules/structs". --------- Signed-off-by: wxiaoguang <wxiaoguang@gmail.com> Co-authored-by: delvh <dev.lh@web.de>
53 lines
1.5 KiB
Go
53 lines
1.5 KiB
Go
// Copyright 2021 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package v1_14
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import (
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"fmt"
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"regexp"
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"gitea.dev/modelmigration/base"
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"gitea.dev/modules/log"
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"gitea.dev/modules/setting"
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)
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func FixPostgresIDSequences(x base.EngineMigration) error {
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if !setting.Database.Type.IsPostgreSQL() {
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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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