ForEachSorted runs method for each snapshot following some sort order
(sortMethod string, handler func(*Snapshot) error)
| 366 | |
| 367 | // ForEachSorted runs method for each snapshot following some sort order |
| 368 | func (collection *SnapshotCollection) ForEachSorted(sortMethod string, handler func(*Snapshot) error) error { |
| 369 | blobs := collection.db.FetchByPrefix([]byte("S")) |
| 370 | list := make([]*Snapshot, 0, len(blobs)) |
| 371 | |
| 372 | for _, blob := range blobs { |
| 373 | s := &Snapshot{} |
| 374 | if err := s.Decode(blob); err != nil { |
| 375 | log.Printf("Error decoding snapshot: %s\n", err) |
| 376 | } else { |
| 377 | list = append(list, s) |
| 378 | } |
| 379 | } |
| 380 | |
| 381 | sorter, err := newSnapshotSorter(sortMethod, list) |
| 382 | if err != nil { |
| 383 | return err |
| 384 | } |
| 385 | |
| 386 | for _, s := range sorter.list { |
| 387 | err = handler(s) |
| 388 | if err != nil { |
| 389 | return err |
| 390 | } |
| 391 | } |
| 392 | |
| 393 | return nil |
| 394 | } |
| 395 | |
| 396 | // Len returns number of snapshots in collection |
| 397 | // ForEach runs method for each snapshot |