我正在使用Flask的内置开发服务器来开发Flask应用程序。我使用Flask-Script启动它。我想切换为使用Gunicorn作为Web服务器。为此,我需要在Flask-Script和Gunicorn之间编写某种集成代码吗?还是Flask-Script与使用Gunicorn运行应用程序无关?
提前致谢!
到@ sean-lynch的道具。以下是根据他的回答而工作,经过测试的代码。我所做的更改是:
在尝试启动服务器之前,将从sys.argv中删除了Gunicorn无法识别的选项remove_non_gunicorn_command_line_args()。否则,Gunicorn会引发错误,并显示以下消息:error: unrecognized arguments: --port 5010。我删除-p这是因为,即使它不会导致错误,也仅是因为Gunicorn认为它是其pidfile选择的简称,这显然不是我们想要的。
sys.argv
remove_non_gunicorn_command_line_args()
error: unrecognized arguments: --port 5010
-p
pidfile
修改GunicornServer.handle()签名以匹配其覆盖的方法,即Command.handle()
from flask_script import Command from gunicorn.app.base import Application class GunicornServer(Command): description = 'Run the app within Gunicorn' def __init__(self, host='127.0.0.1', port=8000, workers=6): self.port = port self.host = host self.workers = workers def get_options(self): return ( Option('-t', '--host', dest='host', default=self.host), Option('-p', '--port', dest='port', type=int, default=self.port), Option('-w', '--workers', dest='workers', type=int, default=self.workers), ) def handle(self, app, *args, **kwargs): host = kwargs['host'] port = kwargs['port'] workers = kwargs['workers'] def remove_non_gunicorn_command_line_args(): import sys args_to_remove = ['--port','-p'] def args_filter(name_or_value): keep = not args_to_remove.count(name_or_value) if keep: previous = sys.argv[sys.argv.index(name_or_value) - 1] keep = not args_to_remove.count(previous) return keep sys.argv = filter(args_filter, sys.argv) remove_non_gunicorn_command_line_args() from gunicorn import version_info if version_info < (0, 9, 0): from gunicorn.arbiter import Arbiter from gunicorn.config import Config arbiter = Arbiter(Config({'bind': "%s:%d" % (host, int(port)),'workers': workers}), app) arbiter.run() else: class FlaskApplication(Application): def init(self, parser, opts, args): return { 'bind': '{0}:{1}'.format(host, port), 'workers': workers } def load(self): return app FlaskApplication().run() manager.add_command('gunicorn', GunicornServer())
正如Dhaivat所说,你可以直接在Gunicorn中使用Flask应用程序。
如果你仍然想使用Flask-Script,则需要创建一个custom Command。我没有使用Gunicorn的经验,但是我发现了Flask-Actions 的类似解决方案,并将其移植到Flask-Script中,尽管会警告,但未经测试。
Command
from flask_script import Command, Option class GunicornServer(Command): description = 'Run the app within Gunicorn' def __init__(self, host='127.0.0.1', port=8000, workers=4): self.port = port self.host = host self.workers = workers def get_options(self): return ( Option('-H', '--host', dest='host', default=self.host), Option('-p', '--port', dest='port', type=int, default=self.port), Option('-w', '--workers', dest='workers', type=int, default=self.workers), ) def handle(self, app, host, port, workers): from gunicorn import version_info if version_info < (0, 9, 0): from gunicorn.arbiter import Arbiter from gunicorn.config import Config arbiter = Arbiter(Config({'bind': "%s:%d" % (host, int(port)),'workers': workers}), app) arbiter.run() else: from gunicorn.app.base import Application class FlaskApplication(Application): def init(self, parser, opts, args): return { 'bind': '{0}:{1}'.format(host, port), 'workers': workers } def load(self): return app FlaskApplication().run()
然后,你可以注册它来代替瓶的本地开发服务器在python manage.py runserver
python manage.py runserver
manager.add_command("runserver", GunicornServer())
或注册为新命令,例如 python manage.py gunicorn
manager.add_command("gunicorn", GunicornServer())
随着瓶脚本的最新版本,改变方法handle有__call__
handle
__call__