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# Copyright (c) Meta Platforms, Inc. and affiliates.
# SPDX-License-Identifier: LGPL-2.1-or-later
import asyncio
from contextlib import contextmanager
import os
from subprocess import CalledProcessError as CalledProcessError
from typing import Any, Iterator, Tuple
async def check_call(*args: Any, **kwds: Any) -> None:
proc = await asyncio.create_subprocess_exec(*args, **kwds)
returncode = await proc.wait()
if returncode != 0:
raise CalledProcessError(returncode, args)
async def check_output(*args: Any, **kwds: Any) -> bytes:
kwds["stdout"] = asyncio.subprocess.PIPE
proc = await asyncio.create_subprocess_exec(*args, **kwds)
stdout = (await proc.communicate())[0]
if proc.returncode:
raise CalledProcessError(proc.returncode, args)
return stdout
async def check_output_shell(cmd: str, **kwds: Any) -> bytes:
kwds["stdout"] = asyncio.subprocess.PIPE
proc = await asyncio.create_subprocess_shell(cmd, **kwds)
stdout = (await proc.communicate())[0]
if proc.returncode:
raise CalledProcessError(proc.returncode, cmd)
return stdout
@contextmanager
def pipe_context() -> Iterator[Tuple[int, int]]:
pipe_r = pipe_w = None
try:
pipe_r, pipe_w = os.pipe()
yield pipe_r, pipe_w
finally:
if pipe_r is not None:
os.close(pipe_r)
if pipe_w is not None:
os.close(pipe_w)
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