from __future__ import annotations

from .cell_agent import build_from_env


def main() -> None:
    service, server = build_from_env()
    try:
        server.serve_forever()
    except KeyboardInterrupt:
        return
    finally:
        server.shutdown()
        server.server_close()
        service.close()


if __name__ == "__main__":
    try:
        main()
    except ValueError as exc:
        raise SystemExit(f"configuration error: {exc}") from exc