langchain/libs/community/langchain_community/utilities/cassandra.py

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from __future__ import annotations
import asyncio
from typing import TYPE_CHECKING, Any, Callable
if TYPE_CHECKING:
from cassandra.cluster import ResponseFuture
async def wrapped_response_future(
func: Callable[..., ResponseFuture], *args: Any, **kwargs: Any
) -> Any:
loop = asyncio.get_event_loop()
asyncio_future = loop.create_future()
response_future = func(*args, **kwargs)
def success_handler(_: Any) -> None:
loop.call_soon_threadsafe(asyncio_future.set_result, response_future.result())
def error_handler(exc: BaseException) -> None:
loop.call_soon_threadsafe(asyncio_future.set_exception, exc)
response_future.add_callbacks(success_handler, error_handler)
return await asyncio_future