Загрузить файлы в «venv/Lib/site-packages/uvicorn»

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2026-07-02 20:55:39 +00:00
parent 0088df129a
commit 69a3dfbc39
4 changed files with 184 additions and 0 deletions

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from uvicorn.config import Config
from uvicorn.main import Server, main, run
__version__ = "0.49.0"
__all__ = ["main", "run", "Config", "Server"]

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import uvicorn
if __name__ == "__main__":
uvicorn.main()

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from __future__ import annotations
import asyncio
import sys
from collections.abc import Callable, Coroutine
from typing import Any, TypeVar
__all__ = ["asyncio_run", "iscoroutinefunction"]
if sys.version_info >= (3, 14):
from inspect import iscoroutinefunction
else:
from asyncio import iscoroutinefunction
_T = TypeVar("_T")
if sys.version_info >= (3, 12):
asyncio_run = asyncio.run
elif sys.version_info >= (3, 11):
def asyncio_run(
main: Coroutine[Any, Any, _T],
*,
debug: bool = False,
loop_factory: Callable[[], asyncio.AbstractEventLoop] | None = None,
) -> _T:
# asyncio.run from Python 3.12
# https://docs.python.org/3/license.html#psf-license
with asyncio.Runner(debug=debug, loop_factory=loop_factory) as runner:
return runner.run(main)
else:
# modified version of asyncio.run from Python 3.10 to add loop_factory kwarg
# https://docs.python.org/3/license.html#psf-license
def asyncio_run(
main: Coroutine[Any, Any, _T],
*,
debug: bool = False,
loop_factory: Callable[[], asyncio.AbstractEventLoop] | None = None,
) -> _T:
try:
asyncio.get_running_loop()
except RuntimeError:
pass
else:
raise RuntimeError("asyncio.run() cannot be called from a running event loop")
if not asyncio.iscoroutine(main):
raise ValueError(f"a coroutine was expected, got {main!r}")
if loop_factory is None:
loop = asyncio.new_event_loop()
else:
loop = loop_factory()
try:
if loop_factory is None:
asyncio.set_event_loop(loop)
if debug is not None:
loop.set_debug(debug)
return loop.run_until_complete(main)
finally:
try:
_cancel_all_tasks(loop)
loop.run_until_complete(loop.shutdown_asyncgens())
loop.run_until_complete(loop.shutdown_default_executor())
finally:
if loop_factory is None:
asyncio.set_event_loop(None)
loop.close()
def _cancel_all_tasks(loop: asyncio.AbstractEventLoop) -> None:
to_cancel = asyncio.all_tasks(loop)
if not to_cancel:
return
for task in to_cancel:
task.cancel()
loop.run_until_complete(asyncio.gather(*to_cancel, return_exceptions=True))
for task in to_cancel:
if task.cancelled():
continue
if task.exception() is not None:
loop.call_exception_handler(
{
"message": "unhandled exception during asyncio.run() shutdown",
"exception": task.exception(),
"task": task,
}
)

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"""
Some light wrappers around Python's multiprocessing, to deal with cleanly
starting child processes.
"""
from __future__ import annotations
import multiprocessing
import os
import sys
from collections.abc import Callable
from multiprocessing.context import SpawnProcess
from socket import socket
from uvicorn.config import Config
multiprocessing.allow_connection_pickling()
spawn = multiprocessing.get_context("spawn")
def get_subprocess(
config: Config,
target: Callable[..., None],
sockets: list[socket],
) -> SpawnProcess:
"""
Called in the parent process, to instantiate a new child process instance.
The child is not yet started at this point.
* config - The Uvicorn configuration instance.
* target - A callable that accepts a list of sockets. In practice this will
be the `Server.run()` method.
* sockets - A list of sockets to pass to the server. Sockets are bound once
by the parent process, and then passed to the child processes.
"""
# We pass across the stdin fileno, and reopen it in the child process.
# This is required for some debugging environments.
try:
stdin_fileno = sys.stdin.fileno()
# The `sys.stdin` can be `None`, see https://docs.python.org/3/library/sys.html#sys.__stdin__.
except (AttributeError, OSError):
stdin_fileno = None
kwargs = {
"config": config,
"target": target,
"sockets": sockets,
"stdin_fileno": stdin_fileno,
}
return spawn.Process(target=subprocess_started, kwargs=kwargs)
def subprocess_started(
config: Config,
target: Callable[..., None],
sockets: list[socket],
stdin_fileno: int | None,
) -> None:
"""
Called when the child process starts.
* config - The Uvicorn configuration instance.
* target - A callable that accepts a list of sockets. In practice this will
be the `Server.run()` method.
* sockets - A list of sockets to pass to the server. Sockets are bound once
by the parent process, and then passed to the child processes.
* stdin_fileno - The file number of sys.stdin, so that it can be reattached
to the child process.
"""
# Re-open stdin.
if stdin_fileno is not None:
sys.stdin = os.fdopen(stdin_fileno) # pragma: full coverage
# Logging needs to be setup again for each child.
config.configure_logging()
try:
# Now we can call into `Server.run(sockets=sockets)`
target(sockets=sockets)
except KeyboardInterrupt: # pragma: no cover
# suppress the exception to avoid a traceback from subprocess.Popen
# the parent already expects us to end, so no vital information is lost
pass