forked from platypush/platypush
Revert "Added a multi-worker approach to the Tornado WSGI container."
This reverts commit 71401a4936.
Temporarily reverted this commit because the `reuse_address` on the
application's `listen` method has only been implemented in Tornado 6.2 -
and Debian stable still shipts Tornado 6.1.
This commit is contained in:
parent
71401a4936
commit
ac4fe4447e
GPG Key ID:
D90FBA7F76362774
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@ -1,12 +1,10 @@
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import multiprocessing
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import os
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import pathlib
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import secrets
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import threading
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import time
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from multiprocessing import Process
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from typing import List, Mapping, Optional
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from typing import Mapping, Optional
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from tornado.wsgi import WSGIContainer
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from tornado.web import Application, FallbackHandler
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@ -188,7 +186,6 @@ class HttpBackend(Backend):
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"""
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_DEFAULT_HTTP_PORT = 8008
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"""The default listen port for the webserver."""
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def __init__(
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self,
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@ -196,7 +193,6 @@ class HttpBackend(Backend):
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bind_address: str = '0.0.0.0',
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resource_dirs: Optional[Mapping[str, str]] = None,
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secret_key_file: Optional[str] = None,
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num_workers: Optional[int] = None,
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**kwargs,
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):
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"""
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@ -208,13 +204,12 @@ class HttpBackend(Backend):
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the value is the absolute path to expose.
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:param secret_key_file: Path to the file containing the secret key that will be used by Flask
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(default: ``~/.local/share/platypush/flask.secret.key``).
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:param num_workers: Number of worker processes to use (default: ``(cpu_count * 2) + 1``).
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"""
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super().__init__(**kwargs)
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self.port = port
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self._workers: List[Process] = []
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self.server_proc = None
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self._service_registry_thread = None
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self.bind_address = bind_address
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self._io_loop: Optional[IOLoop] = None
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@ -232,7 +227,6 @@ class HttpBackend(Backend):
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or os.path.join(Config.get('workdir'), 'flask.secret.key') # type: ignore
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)
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self.local_base_url = f'http://localhost:{self.port}'
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self.num_workers = num_workers or (multiprocessing.cpu_count() * 2) + 1
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def send_message(self, *_, **__):
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self.logger.warning('Use cURL or any HTTP client to query the HTTP backend')
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@ -246,27 +240,18 @@ class HttpBackend(Backend):
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self._io_loop.stop()
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self._io_loop.close()
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workers = self._workers.copy()
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for worker in workers:
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worker.terminate()
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stop_timeout = 5
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wait_start_time = time.time()
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wait_max_time = wait_start_time + stop_timeout
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for i, worker in enumerate(workers[::-1]):
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worker.join(timeout=max(0, wait_max_time - time.time()))
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if worker.is_alive():
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worker.kill()
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if worker.is_alive():
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if self.server_proc:
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self.server_proc.terminate()
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self.server_proc.join(timeout=10)
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if self.server_proc.is_alive():
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self.server_proc.kill()
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if self.server_proc.is_alive():
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self.logger.info(
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'HTTP worker %s may be still alive at termination', worker.name
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'HTTP server process may be still alive at termination'
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)
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else:
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self._workers.pop(i)
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self.logger.info('HTTP server process terminated')
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self.logger.info('HTTP workers terminated')
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if self._service_registry_thread and self._service_registry_thread.is_alive():
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self._service_registry_thread.join(timeout=5)
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self._service_registry_thread = None
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@ -297,28 +282,33 @@ class HttpBackend(Backend):
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raise e
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def _web_server_proc(self):
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assert isinstance(
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self.bus, RedisBus
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), 'The HTTP backend only works if backed by a Redis bus'
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def proc():
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self.logger.info('Starting local web server on port %s', self.port)
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assert isinstance(
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self.bus, RedisBus
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), 'The HTTP backend only works if backed by a Redis bus'
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application.config['redis_queue'] = self.bus.redis_queue
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application.secret_key = self._get_secret_key()
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container = WSGIContainer(application)
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server = Application(
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[
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*[(route.path(), route) for route in get_ws_routes()],
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(r'.*', FallbackHandler, {'fallback': container}),
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]
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)
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application.config['redis_queue'] = self.bus.redis_queue
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application.secret_key = self._get_secret_key()
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server.listen(address=self.bind_address, port=self.port, reuse_port=True)
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self._io_loop = IOLoop.instance()
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container = WSGIContainer(application)
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server = Application(
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[
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*[(route.path(), route) for route in get_ws_routes()],
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(r'.*', FallbackHandler, {'fallback': container}),
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]
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)
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try:
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self._io_loop.start()
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except Exception as e:
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if not self.should_stop():
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raise e
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server.listen(address=self.bind_address, port=self.port)
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self._io_loop = IOLoop.instance()
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try:
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self._io_loop.start()
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except Exception as e:
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if not self.should_stop():
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raise e
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return proc
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def _register_service(self):
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try:
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@ -335,22 +325,9 @@ class HttpBackend(Backend):
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self._service_registry_thread.start()
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def _run_web_server(self):
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self.logger.info(
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'Starting local web server on port %s with %d service workers',
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self.port,
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self.num_workers,
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)
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workers = [
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Process(target=self._web_server_proc, name=f'WebWorker#{i + 1}')
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for i in range(self.num_workers)
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]
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for worker in workers:
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worker.start()
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for worker in workers:
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worker.join()
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self.server_proc = Process(target=self._web_server_proc(), name='WebServer')
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self.server_proc.start()
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self.server_proc.join()
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def run(self):
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super().run()
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