我正在使用Flask的内置开发服务器开发Flask应用程序。我是用Flask-Script开始的。我想切换到使用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？或者Flask-Script与使用Gunicorn运行应用程序无关？
提前致谢！
支持@sean-lynch的道具。以下是基于他的答案的工作，测试代码。 我所做的改变是：
在尝试启动服务器之前，Gunicorn无法识别的选项将从sys.argv中的remove_non_gunicorn_command_line_args()中删除。否则Gunicorn会抛出一条错误消息：error: unrecognized arguments: --port 5010。我删除了-p，因为即使它没有导致错误，也只是因为Gunicorn认为它是pidfile选项的缩写形式，这显然不是预期的。
修改了GunicornServer.handle（）签名以匹配它覆盖的方法，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())
答案 0 :(得分：13)
正如Dhaivat所说，你可以直接使用你的Flask应用程序与Gunicorn。
如果您仍想使用Flask-Script，则需要创建自定义Command。我对Gunicorn没有任何经验，但是我发现Flask-Actions有一个类似的solution并将它移植到Flask-Script，虽然被警告，但它没有经过测试。
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()
然后您可以注册它以在python manage.py runserver
manager.add_command("runserver", GunicornServer())
或注册为python manage.py gunicorn
manager.add_command("gunicorn", GunicornServer())
2016年6月编辑：使用最新版本的Flask-Script，将方法handle更改为__call__。 old flask-script vs new flask-script
答案 1 :(得分：8)
我写了一个基于肖恩林奇的更好版本的GunicornServer，命令现在接受所有gunicorn的论点
from yourapp import app
from flask.ext.script import Manager, Command, Option
class GunicornServer(Command):
"""Run the app within Gunicorn"""
def get_options(self):
from gunicorn.config import make_settings
settings = make_settings()
options = (
Option(*klass.cli, action=klass.action)
for setting, klass in settings.iteritems() if klass.cli
)
return options
def run(self, *args, **kwargs):
from gunicorn.app.wsgiapp import WSGIApplication
app = WSGIApplication()
app.app_uri = 'manage:app'
return app.run()
manager = Manager(app)
manager.add_command("gunicorn", GunicornServer())
答案 2 :(得分：3)
根据肖恩的回答，我还写了一个更适合我的版本。
@manager.option('-h', '--host', dest='host', default='127.0.0.1')
@manager.option('-p', '--port', dest='port', type=int, default=6969)
@manager.option('-w', '--workers', dest='workers', type=int, default=3)
def gunicorn(host, port, workers):
"""Start the Server with Gunicorn"""
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
application = FlaskApplication()
return application.run()
你可以使用像python manager.py gunicorn
答案 3 :(得分：2)
Flask实际上有运行Gunicorn的文档here。
你必须记住，Gunicorn是一个带有一些细节的WSGI服务器。
答案 4 :(得分：1)
感谢@menghan的解决方案和@OutOfFoodException的改进。但是请记住，对于gunicorn=20.0.4使用-b, --bind documentation来绑定服务器套接字。结果命令对我来说是这样的：
python3 manage.py gunicorn -b 0.0.0.0:5000
from yourapp import app
from flask.ext.script import Manager, Command, Option
class GunicornServer(Command):
"""Run the app within Gunicorn"""
def get_options(self):
from gunicorn.config import make_settings
settings = make_settings()
options = (
Option(*klass.cli, action=klass.action)
for setting, klass in settings.iteritems() if klass.cli
)
return options
def run(self, *args, **kwargs):
from gunicorn.app.wsgiapp import WSGIApplication
app = WSGIApplication()
app.app_uri = 'manage:app'
return app.run()
manager = Manager(app)
manager.add_command("gunicorn", GunicornServer())
答案 5 :(得分：0)
我将在@NinjaDQ上进一步阐述答案。如果要使用WSGIApplication属性同时定义烧瓶应用程序配置文件和自定义命令行参数，则需要使用overrides。问题是这个应用程序sys.argv命令行参数因此有必要忽略 from gunicorn.app.base import Application
class FlaskApplication(Application):
def init(self, parser, opts, args):
return {
"bind": "{0}:{1}".format(host, port),
"workers": 4
}
def chdir(self):
# chdir to the configured path before loading,
# default is the current dir
os.chdir(self.cfg.chdir)
# add the path to sys.path
sys.path.insert(0, self.cfg.chdir)
def load_wsgiapp(self):
self.chdir()
# load the app
return util.import_app(self.app_uri)
def load(self):
return self.load_wsgiapp()
# Important! Do not pass any cmd line arguments to gunicorn
sys.argv = sys.argv[:2]
wsgi_app = FlaskApplication()
wsgi_app.app_uri = "manage:create_app('{0}')".format(config_file)
return wsgi_app.run()
。
note:答案 6 :(得分：0)
根据menghan的回答，从Application config接收所有参数。
from flask_script import Command, Option
class GunicornApp(Command):
def get_options(self):
from gunicorn.config import make_settings
settings = make_settings()
options = (
Option(*klass.cli, dest=klass.name, default=klass.default)
for setting, klass in settings.items() if klass.cli
)
return options
def __call__(self, app=None, *args, **kwargs):
from gunicorn.app.base import Application
class FlaskApplication(Application):
def init(self, parser, opts, args):
return kwargs
def load(self):
return app
FlaskApplication().run()