37 lines
1.1 KiB
Python
37 lines
1.1 KiB
Python
from __future__ import annotations
|
|
|
|
from collections.abc import Callable, Sequence
|
|
from typing import Any, ParamSpec
|
|
|
|
from starlette._utils import is_async_callable
|
|
from starlette.concurrency import run_in_threadpool
|
|
|
|
P = ParamSpec("P")
|
|
|
|
|
|
class BackgroundTask:
|
|
def __init__(self, func: Callable[P, Any], *args: P.args, **kwargs: P.kwargs) -> None:
|
|
self.func = func
|
|
self.args = args
|
|
self.kwargs = kwargs
|
|
self.is_async = is_async_callable(func)
|
|
|
|
async def __call__(self) -> None:
|
|
if self.is_async:
|
|
await self.func(*self.args, **self.kwargs)
|
|
else:
|
|
await run_in_threadpool(self.func, *self.args, **self.kwargs)
|
|
|
|
|
|
class BackgroundTasks(BackgroundTask):
|
|
def __init__(self, tasks: Sequence[BackgroundTask] | None = None):
|
|
self.tasks = list(tasks) if tasks else []
|
|
|
|
def add_task(self, func: Callable[P, Any], *args: P.args, **kwargs: P.kwargs) -> None:
|
|
task = BackgroundTask(func, *args, **kwargs)
|
|
self.tasks.append(task)
|
|
|
|
async def __call__(self) -> None:
|
|
for task in self.tasks:
|
|
await task()
|