from dataclasses import dataclass
from typing import Final
import os


@dataclass(frozen=True)
class Constants:

    TOR_BOOTSTRAP_TIMEOUT: Final[int] = int(os.environ.get('TOR_BOOTSTRAP_TIMEOUT', '90'))

    TOR_CONTROL_SOCKET_FILENAME: Final[str] = 'tor.sock'
    TOR_PROCESS_IDENTIFIER_FILENAME: Final[str] = 'tor.pid'
    TOR_INSTANCE_LOCK_FILENAME: Final[str] = 'lock'