| 67 | } |
| 68 | |
| 69 | func writeSnap(snapPath string, contents []byte) error { |
| 70 | // Sort the JSON keys recursively to ensure consistent output. |
| 71 | // We do this by unmarshaling and remarshaling, which ensures Go's JSON encoder |
| 72 | // sorts all map keys alphabetically at every level. |
| 73 | sortedJSON, err := sortJSONKeys(contents) |
| 74 | if err != nil { |
| 75 | return fmt.Errorf("failed to sort JSON keys: %w", err) |
| 76 | } |
| 77 | |
| 78 | // Ensure the directory exists |
| 79 | if err := os.MkdirAll(filepath.Dir(snapPath), 0700); err != nil { |
| 80 | return fmt.Errorf("failed to create snapshot directory: %w", err) |
| 81 | } |
| 82 | |
| 83 | // Write the snapshot file |
| 84 | if err := os.WriteFile(snapPath, sortedJSON, 0600); err != nil { |
| 85 | return fmt.Errorf("failed to write snapshot file: %w", err) |
| 86 | } |
| 87 | |
| 88 | return nil |
| 89 | } |
| 90 | |
| 91 | // sortJSONKeys recursively sorts all object keys in a JSON byte array by |
| 92 | // unmarshaling to map[string]any and remarshaling. Go's JSON encoder |