| 353 | } |
| 354 | |
| 355 | func (n *Namespace) parseBackup(r io.Reader) (ApplicationSettings, ApplicationVolumeSettings, []byte, error) { |
| 356 | var appSettings ApplicationSettings |
| 357 | var volSettings ApplicationVolumeSettings |
| 358 | var volumeData bytes.Buffer |
| 359 | |
| 360 | gr, err := gzip.NewReader(r) |
| 361 | if err != nil { |
| 362 | return appSettings, volSettings, nil, fmt.Errorf("%w: %v", ErrInvalidBackup, err) |
| 363 | } |
| 364 | defer gr.Close() |
| 365 | |
| 366 | tr := tar.NewReader(gr) |
| 367 | tw := tar.NewWriter(&volumeData) |
| 368 | defer tw.Close() |
| 369 | |
| 370 | foundApp := false |
| 371 | foundVol := false |
| 372 | |
| 373 | for { |
| 374 | header, err := tr.Next() |
| 375 | if errors.Is(err, io.EOF) { |
| 376 | break |
| 377 | } |
| 378 | if err != nil { |
| 379 | return appSettings, volSettings, nil, fmt.Errorf("%w: %v", ErrInvalidBackup, err) |
| 380 | } |
| 381 | |
| 382 | switch header.Name { |
| 383 | case backupAppSettingsEntry: |
| 384 | data, err := io.ReadAll(tr) |
| 385 | if err != nil { |
| 386 | return appSettings, volSettings, nil, fmt.Errorf("%w: reading application settings: %v", ErrInvalidBackup, err) |
| 387 | } |
| 388 | appSettings, err = UnmarshalApplicationSettings(string(data)) |
| 389 | if err != nil { |
| 390 | return appSettings, volSettings, nil, fmt.Errorf("%w: parsing application settings: %v", ErrInvalidBackup, err) |
| 391 | } |
| 392 | foundApp = true |
| 393 | |
| 394 | case backupVolSettingsEntry: |
| 395 | data, err := io.ReadAll(tr) |
| 396 | if err != nil { |
| 397 | return appSettings, volSettings, nil, fmt.Errorf("%w: reading volume settings: %v", ErrInvalidBackup, err) |
| 398 | } |
| 399 | volSettings, err = UnmarshalApplicationVolumeSettings(string(data)) |
| 400 | if err != nil { |
| 401 | return appSettings, volSettings, nil, fmt.Errorf("%w: parsing volume settings: %v", ErrInvalidBackup, err) |
| 402 | } |
| 403 | foundVol = true |
| 404 | |
| 405 | default: |
| 406 | if header.Name == BackupDataDir || strings.HasPrefix(header.Name, BackupDataDir+"/") { |
| 407 | newHeader := *header |
| 408 | if header.Name == BackupDataDir { |
| 409 | newHeader.Name = "data" |
| 410 | } else { |
| 411 | newHeader.Name = "data" + strings.TrimPrefix(header.Name, BackupDataDir) |
| 412 | } |