242 lines
8 KiB
Python
242 lines
8 KiB
Python
"""Async gunicorn worker for aiohttp.web"""
|
|
|
|
import asyncio
|
|
import os
|
|
import re
|
|
import signal
|
|
import sys
|
|
from types import FrameType
|
|
from typing import Any, Awaitable, Callable, Optional, Union # noqa
|
|
|
|
from gunicorn.config import AccessLogFormat as GunicornAccessLogFormat
|
|
from gunicorn.workers import base
|
|
|
|
from aiohttp import web
|
|
|
|
from .helpers import set_result
|
|
from .web_app import Application
|
|
from .web_log import AccessLogger
|
|
|
|
try:
|
|
import ssl
|
|
SSLContext = ssl.SSLContext # noqa
|
|
except ImportError: # pragma: no cover
|
|
ssl = None # type: ignore
|
|
SSLContext = object # type: ignore
|
|
|
|
|
|
__all__ = ('GunicornWebWorker',
|
|
'GunicornUVLoopWebWorker',
|
|
'GunicornTokioWebWorker')
|
|
|
|
|
|
class GunicornWebWorker(base.Worker):
|
|
|
|
DEFAULT_AIOHTTP_LOG_FORMAT = AccessLogger.LOG_FORMAT
|
|
DEFAULT_GUNICORN_LOG_FORMAT = GunicornAccessLogFormat.default
|
|
|
|
def __init__(self, *args: Any, **kw: Any) -> None: # pragma: no cover
|
|
super().__init__(*args, **kw)
|
|
|
|
self._task = None # type: Optional[asyncio.Task[None]]
|
|
self.exit_code = 0
|
|
self._notify_waiter = None # type: Optional[asyncio.Future[bool]]
|
|
|
|
def init_process(self) -> None:
|
|
# create new event_loop after fork
|
|
asyncio.get_event_loop().close()
|
|
|
|
self.loop = asyncio.new_event_loop()
|
|
asyncio.set_event_loop(self.loop)
|
|
|
|
super().init_process()
|
|
|
|
def run(self) -> None:
|
|
self._task = self.loop.create_task(self._run())
|
|
|
|
try: # ignore all finalization problems
|
|
self.loop.run_until_complete(self._task)
|
|
except Exception:
|
|
self.log.exception("Exception in gunicorn worker")
|
|
if sys.version_info >= (3, 6):
|
|
self.loop.run_until_complete(self.loop.shutdown_asyncgens())
|
|
self.loop.close()
|
|
|
|
sys.exit(self.exit_code)
|
|
|
|
async def _run(self) -> None:
|
|
if isinstance(self.wsgi, Application):
|
|
app = self.wsgi
|
|
elif asyncio.iscoroutinefunction(self.wsgi):
|
|
app = await self.wsgi()
|
|
else:
|
|
raise RuntimeError("wsgi app should be either Application or "
|
|
"async function returning Application, got {}"
|
|
.format(self.wsgi))
|
|
access_log = self.log.access_log if self.cfg.accesslog else None
|
|
runner = web.AppRunner(app,
|
|
logger=self.log,
|
|
keepalive_timeout=self.cfg.keepalive,
|
|
access_log=access_log,
|
|
access_log_format=self._get_valid_log_format(
|
|
self.cfg.access_log_format))
|
|
await runner.setup()
|
|
|
|
ctx = self._create_ssl_context(self.cfg) if self.cfg.is_ssl else None
|
|
|
|
runner = runner
|
|
assert runner is not None
|
|
server = runner.server
|
|
assert server is not None
|
|
for sock in self.sockets:
|
|
site = web.SockSite(
|
|
runner, sock, ssl_context=ctx,
|
|
shutdown_timeout=self.cfg.graceful_timeout / 100 * 95)
|
|
await site.start()
|
|
|
|
# If our parent changed then we shut down.
|
|
pid = os.getpid()
|
|
try:
|
|
while self.alive: # type: ignore
|
|
self.notify()
|
|
|
|
cnt = server.requests_count
|
|
if self.cfg.max_requests and cnt > self.cfg.max_requests:
|
|
self.alive = False
|
|
self.log.info("Max requests, shutting down: %s", self)
|
|
|
|
elif pid == os.getpid() and self.ppid != os.getppid():
|
|
self.alive = False
|
|
self.log.info("Parent changed, shutting down: %s", self)
|
|
else:
|
|
await self._wait_next_notify()
|
|
except BaseException:
|
|
pass
|
|
|
|
await runner.cleanup()
|
|
|
|
def _wait_next_notify(self) -> 'asyncio.Future[bool]':
|
|
self._notify_waiter_done()
|
|
|
|
loop = self.loop
|
|
assert loop is not None
|
|
self._notify_waiter = waiter = loop.create_future()
|
|
self.loop.call_later(1.0, self._notify_waiter_done, waiter)
|
|
|
|
return waiter
|
|
|
|
def _notify_waiter_done(self, waiter: 'asyncio.Future[bool]'=None) -> None:
|
|
if waiter is None:
|
|
waiter = self._notify_waiter
|
|
if waiter is not None:
|
|
set_result(waiter, True)
|
|
|
|
if waiter is self._notify_waiter:
|
|
self._notify_waiter = None
|
|
|
|
def init_signals(self) -> None:
|
|
# Set up signals through the event loop API.
|
|
|
|
self.loop.add_signal_handler(signal.SIGQUIT, self.handle_quit,
|
|
signal.SIGQUIT, None)
|
|
|
|
self.loop.add_signal_handler(signal.SIGTERM, self.handle_exit,
|
|
signal.SIGTERM, None)
|
|
|
|
self.loop.add_signal_handler(signal.SIGINT, self.handle_quit,
|
|
signal.SIGINT, None)
|
|
|
|
self.loop.add_signal_handler(signal.SIGWINCH, self.handle_winch,
|
|
signal.SIGWINCH, None)
|
|
|
|
self.loop.add_signal_handler(signal.SIGUSR1, self.handle_usr1,
|
|
signal.SIGUSR1, None)
|
|
|
|
self.loop.add_signal_handler(signal.SIGABRT, self.handle_abort,
|
|
signal.SIGABRT, None)
|
|
|
|
# Don't let SIGTERM and SIGUSR1 disturb active requests
|
|
# by interrupting system calls
|
|
signal.siginterrupt(signal.SIGTERM, False)
|
|
signal.siginterrupt(signal.SIGUSR1, False)
|
|
|
|
def handle_quit(self, sig: int, frame: FrameType) -> None:
|
|
self.alive = False
|
|
|
|
# worker_int callback
|
|
self.cfg.worker_int(self)
|
|
|
|
# wakeup closing process
|
|
self._notify_waiter_done()
|
|
|
|
def handle_abort(self, sig: int, frame: FrameType) -> None:
|
|
self.alive = False
|
|
self.exit_code = 1
|
|
self.cfg.worker_abort(self)
|
|
sys.exit(1)
|
|
|
|
@staticmethod
|
|
def _create_ssl_context(cfg: Any) -> 'SSLContext':
|
|
""" Creates SSLContext instance for usage in asyncio.create_server.
|
|
|
|
See ssl.SSLSocket.__init__ for more details.
|
|
"""
|
|
if ssl is None: # pragma: no cover
|
|
raise RuntimeError('SSL is not supported.')
|
|
|
|
ctx = ssl.SSLContext(cfg.ssl_version)
|
|
ctx.load_cert_chain(cfg.certfile, cfg.keyfile)
|
|
ctx.verify_mode = cfg.cert_reqs
|
|
if cfg.ca_certs:
|
|
ctx.load_verify_locations(cfg.ca_certs)
|
|
if cfg.ciphers:
|
|
ctx.set_ciphers(cfg.ciphers)
|
|
return ctx
|
|
|
|
def _get_valid_log_format(self, source_format: str) -> str:
|
|
if source_format == self.DEFAULT_GUNICORN_LOG_FORMAT:
|
|
return self.DEFAULT_AIOHTTP_LOG_FORMAT
|
|
elif re.search(r'%\([^\)]+\)', source_format):
|
|
raise ValueError(
|
|
"Gunicorn's style options in form of `%(name)s` are not "
|
|
"supported for the log formatting. Please use aiohttp's "
|
|
"format specification to configure access log formatting: "
|
|
"http://docs.aiohttp.org/en/stable/logging.html"
|
|
"#format-specification"
|
|
)
|
|
else:
|
|
return source_format
|
|
|
|
|
|
class GunicornUVLoopWebWorker(GunicornWebWorker):
|
|
|
|
def init_process(self) -> None:
|
|
import uvloop
|
|
|
|
# Close any existing event loop before setting a
|
|
# new policy.
|
|
asyncio.get_event_loop().close()
|
|
|
|
# Setup uvloop policy, so that every
|
|
# asyncio.get_event_loop() will create an instance
|
|
# of uvloop event loop.
|
|
asyncio.set_event_loop_policy(uvloop.EventLoopPolicy())
|
|
|
|
super().init_process()
|
|
|
|
|
|
class GunicornTokioWebWorker(GunicornWebWorker):
|
|
|
|
def init_process(self) -> None: # pragma: no cover
|
|
import tokio
|
|
|
|
# Close any existing event loop before setting a
|
|
# new policy.
|
|
asyncio.get_event_loop().close()
|
|
|
|
# Setup tokio policy, so that every
|
|
# asyncio.get_event_loop() will create an instance
|
|
# of tokio event loop.
|
|
asyncio.set_event_loop_policy(tokio.EventLoopPolicy())
|
|
|
|
super().init_process()
|