1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
// Copyright 2018 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package db
import (
"context"
"fmt"
"regexp"
"code.gitea.io/gitea/modules/setting"
)
// CountBadSequences looks for broken sequences from recreate-table mistakes
func CountBadSequences(_ context.Context) (int64, error) {
if !setting.Database.Type.IsPostgreSQL() {
return 0, nil
}
sess := x.NewSession()
defer sess.Close()
var sequences []string
schema := x.Dialect().URI().Schema
sess.Engine().SetSchema("")
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 {
return 0, err
}
sess.Engine().SetSchema(schema)
return int64(len(sequences)), nil
}
// FixBadSequences fixes for broken sequences from recreate-table mistakes
func FixBadSequences(_ context.Context) error {
if !setting.Database.Type.IsPostgreSQL() {
return nil
}
sess := x.NewSession()
defer sess.Close()
if err := sess.Begin(); err != nil {
return err
}
var sequences []string
schema := sess.Engine().Dialect().URI().Schema
sess.Engine().SetSchema("")
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 {
return err
}
sess.Engine().SetSchema(schema)
sequenceRegexp := regexp.MustCompile(`tmp_recreate__(\w+)_id_seq.*`)
for _, sequence := range sequences {
tableName := sequenceRegexp.FindStringSubmatch(sequence)[1]
newSequenceName := tableName + "_id_seq"
if _, err := sess.Exec(fmt.Sprintf("ALTER SEQUENCE `%s` RENAME TO `%s`", sequence, newSequenceName)); err != nil {
return err
}
if _, err := sess.Exec(fmt.Sprintf("SELECT setval('%s', COALESCE((SELECT MAX(id)+1 FROM `%s`), 1), false)", newSequenceName, tableName)); err != nil {
return err
}
}
return sess.Commit()
}
|
