62 lines
1.6 KiB
Python
62 lines
1.6 KiB
Python
from __future__ import annotations
|
|
|
|
import traceback
|
|
from types import TracebackType
|
|
from typing import TYPE_CHECKING
|
|
|
|
from .constants import ErrorType
|
|
from .errors import DBusError
|
|
from .message import Message
|
|
|
|
if TYPE_CHECKING:
|
|
from .message_bus import BaseMessageBus
|
|
|
|
|
|
class SendReply:
|
|
"""A context manager to send a reply to a message."""
|
|
|
|
__slots__ = ("_bus", "_msg")
|
|
|
|
def __init__(self, bus: BaseMessageBus, msg: Message) -> None:
|
|
"""Create a new reply context manager."""
|
|
self._bus = bus
|
|
self._msg = msg
|
|
|
|
def __enter__(self) -> SendReply:
|
|
return self
|
|
|
|
def __call__(self, reply: Message) -> None:
|
|
self._bus.send(reply)
|
|
|
|
def _exit(
|
|
self,
|
|
exc_type: type[Exception] | None,
|
|
exc_value: Exception | None,
|
|
tb: TracebackType | None,
|
|
) -> bool:
|
|
if exc_value:
|
|
if isinstance(exc_value, DBusError):
|
|
self(exc_value._as_message(self._msg))
|
|
else:
|
|
self(
|
|
Message.new_error(
|
|
self._msg,
|
|
ErrorType.SERVICE_ERROR,
|
|
f"The service interface raised an error: {exc_value}.\n{traceback.format_tb(tb)}",
|
|
)
|
|
)
|
|
return True
|
|
|
|
return False
|
|
|
|
def __exit__(
|
|
self,
|
|
exc_type: type[Exception] | None,
|
|
exc_value: Exception | None,
|
|
tb: TracebackType | None,
|
|
) -> bool:
|
|
return self._exit(exc_type, exc_value, tb)
|
|
|
|
def send_error(self, exc: Exception) -> None:
|
|
self._exit(exc.__class__, exc, exc.__traceback__)
|