29 lines
757 B
Python
29 lines
757 B
Python
"""
|
|
Some useful helpers for working in async contexts.
|
|
"""
|
|
|
|
from asyncio import get_running_loop
|
|
from functools import partial, wraps
|
|
from typing import Awaitable, Callable, TypeVar
|
|
|
|
RT = TypeVar("RT")
|
|
|
|
|
|
def run_in_executor(
|
|
function: Callable[..., RT]
|
|
) -> Callable[..., Awaitable[RT]]:
|
|
"""
|
|
Decorator to make blocking a function call asyncio compatible.
|
|
https://stackoverflow.com/questions/41063331/how-to-use-asyncio-with-existing-blocking-library/
|
|
https://stackoverflow.com/a/53719009
|
|
"""
|
|
|
|
@wraps(function)
|
|
async def wrapper(*args, **kwargs) -> RT:
|
|
loop = get_running_loop()
|
|
return await loop.run_in_executor(
|
|
None,
|
|
partial(function, *args, **kwargs),
|
|
)
|
|
|
|
return wrapper
|