Download this file
| 1 | package store |
| 2 | |
| 3 | import ( |
| 4 | "errors" |
| 5 | "math" |
| 6 | |
| 7 | "gorm.io/gorm" |
| 8 | ) |
| 9 | |
| 10 | const maxContentVersion uint64 = math.MaxInt64 |
| 11 | |
| 12 | var errVersionExhausted = errors.New("store: content version exhausted") |
| 13 | |
| 14 | func (h *Handle) advanceContentVersion(tx *gorm.DB, version uint64) error { |
| 15 | if version >= maxContentVersion { |
| 16 | return errVersionExhausted |
| 17 | } |
| 18 | result := tx.Model(&Tab{}).Where("id = ?", h.tabID). |
| 19 | Select("content_version").Update("content_version", gorm.Expr("MAX(content_version, ?)", version)) |
| 20 | if result.Error != nil { |
| 21 | return result.Error |
| 22 | } |
| 23 | if result.RowsAffected != 1 { |
| 24 | return gorm.ErrRecordNotFound |
| 25 | } |
| 26 | return nil |
| 27 | } |
| 28 | |
amadan