Function _write_progress_file

app.py:302–311

Atomically write progress JSON to a file (cross-process safe).

(session_id: str, data: dict)

        _write_progress_file(session_id, {"done": True})

def _write_progress_file(session_id: str, data: dict):
    """Atomically write progress JSON to a file (cross-process safe)."""
    path = _progress_file(session_id)
    tmp_path = path + ".tmp"
    try:
        with open(tmp_path, 'w') as f:
            json.dump(data, f)
        os.replace(tmp_path, path)  # atomic on POSIX
    except Exception:
        pass

# Monkey-patch tqdm to intercept progress
import tqdm as _tqdm_module