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Include OriginalAuthor in Reaction constraint (#13505)

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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>
This commit is contained in:
zeripath 2020-11-10 22:37:11 +00:00 committed by GitHub
parent 3400928f7a
commit 3fd060eb37
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 47 additions and 7 deletions
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14
models/issue_reaction.go
View file

@ -17,13 +17,13 @@ import (
// 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
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)"`
User *User `xorm:"-"`
CreatedUnix timeutil.TimeStamp `xorm:"INDEX created"`
}

2
models/migrations/migrations.go
View file

@ -252,6 +252,8 @@ var migrations = []Migration{
NewMigration("ensure repo topics are up-to-date", fixRepoTopics),
// v158 -> v159
NewMigration("code comment replies should have the commitID of the review they are replying to", updateCodeCommentReplies),
// v159 -> v160
NewMigration("update reactions constraint", updateReactionConstraint),
}
// GetCurrentDBVersion returns the current db version

38
models/migrations/v159.go Normal file
View file

@ -0,0 +1,38 @@
// 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()
}