使用 python Falcon 进行路由

Question

我是 python 的 Falcon 框架的新手。我对 Falcon 的中间件 class 的使用有疑问。在中间件中使用自定义路由器和请求身份验证是否明智，还是应该仅在路由上处理

**main.py**

import falcon
import falcon_jsonify
import root
from waitress import serve

if __name__ == "__main__":
    app = falcon.API(
        middleware=[falcon_jsonify.Middleware(help_messages=True),
        root.customRequestParser()]
    )
    serve(app, host="0.0.0.0", port=5555)

root.py 我计划在其中编写自定义路由

import json
import falcon

class Home(object):
    @classmethod
    def getResponse(self):
        return {"someValue": "someOtherValue"}

def process_request_path(path):
    path = path.lstrip("/").split("/")
    return path

class customRequestParser(object):
    def process_request(self, req, resp):
        print process_request_path(req.path)

我还看到了使用 app = falcon.API(router=CustomRouter()) 的示例。我在 falcon 官方文档页面上看到了一个文档 - http://falcon.readthedocs.io/en/stable/api/routing.html

如果有任何参考文献可以让我知道，请告诉我。

Answer 1

引用Falcon Community FAQ

How do I authenticate requests?

Hooks and middleware components can be used together to authenticate and authorize requests. For example, a middleware component could be used to parse incoming credentials and place the results in req.context. Downstream components or hooks could then use this information to authorize the request, taking into account the user’s role and the requested resource.

Falcon 的 Hooks 是用于特定请求函数（即 on_get）或整个 class 的装饰器。它们非常适合验证传入的请求，因此如常见问题解答所述，此时可以完成身份验证。

这是我编写的一个（未经测试的）示例：

def AuthParsingMiddleware(object):
    def process_request(self, req, resp):
        req.context['GodMode'] = req.headers.get('Auth-Token') == 'GodToken':
    # Might need process_resource & process_response     

def validate_god_mode(req, resp, resource, params):
    if not req.context['GodMode']:
        raise falcon.HTTPBadRequest('Not authorized', 'You are not god')


def GodLikeResource(object):
    @falcon.before(validate_god_mode):
    def on_get(self, req, resp):
        resp.body = 'You have god mode; I prostrate myself'


app = falcon.API(
    middleware=[falcon_jsonify.Middleware(help_messages=True),
                AuthParsingMiddleware()]
)
app.add_route('/godlikeresource', GodLikeResource())

或者更好...

有个falcon-auth package.

使用 python Falcon 进行路由

Routing with python Falcon

python

routing

middleware

falconframework

或者更好...