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gitea/models/migrations/v159.go
zeripath 3fd060eb37
Include OriginalAuthor in Reaction constraint (#13505)
When migrating repositories with reactions with deleted users, the original
author id may be -1. This means that it is possible to end up attempting
to create multiple reactions with the same [ Type, IssueID, CommentID, UserID,
OriginalAuthorID ] thus breaking the constraints.

On SQLite this appears to cause a deadlock but on other dbs this will
cause the migration to fail.

This PR extends the constraint to include the original author username
in the constraint.

Fix #13271

Signed-off-by: Andrew Thornton <art27@cantab.net>
2020-11-10 22:37:11 +00:00

39 lines
1.1 KiB
Go

// Copyright 2020 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package migrations
import (
"code.gitea.io/gitea/modules/timeutil"
"xorm.io/xorm"
)
func updateReactionConstraint(x *xorm.Engine) error {
// Reaction represents a reactions on issues and comments.
type Reaction struct {
ID int64 `xorm:"pk autoincr"`
Type string `xorm:"INDEX UNIQUE(s) NOT NULL"`
IssueID int64 `xorm:"INDEX UNIQUE(s) NOT NULL"`
CommentID int64 `xorm:"INDEX UNIQUE(s)"`
UserID int64 `xorm:"INDEX UNIQUE(s) NOT NULL"`
OriginalAuthorID int64 `xorm:"INDEX UNIQUE(s) NOT NULL DEFAULT(0)"`
OriginalAuthor string `xorm:"INDEX UNIQUE(s)"`
CreatedUnix timeutil.TimeStamp `xorm:"INDEX created"`
}
sess := x.NewSession()
defer sess.Close()
if err := sess.Begin(); err != nil {
return err
}
if err := recreateTable(sess, &Reaction{}); err != nil {
return err
}
return sess.Commit()
}