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Fix: add optimism lock when updating file size

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This commit is contained in:
HFO4
2022-03-13 16:15:19 +08:00
parent e0714fdd53
commit 081e75146c
2 changed files with 7 additions and 2 deletions
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7
models/file.go
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@@ -268,6 +268,7 @@ func (file *File) UpdatePicInfo(value string) error {
}
// UpdateSize 更新文件的大小信息
// TODO: 全局锁
func (file *File) UpdateSize(value uint64) error {
tx := DB.Begin()
var sizeDelta uint64
@@ -281,7 +282,10 @@ func (file *File) UpdateSize(value uint64) error {
sizeDelta = file.Size - value
}
if res := tx.Model(&file).Set("gorm:association_autoupdate", false).Update("size", value); res.Error != nil {
if res := tx.Model(&file).
Where("size = ?", file.Size).
Set("gorm:association_autoupdate", false).
Update("size", value); res.Error != nil {
tx.Rollback()
return res.Error
}
@@ -291,6 +295,7 @@ func (file *File) UpdateSize(value uint64) error {
return err
}
file.Size = value
return tx.Commit().Error
}