Using a bulb inside a class

Question

I have an application with many threads. One of them is a flask that is used to implement the (axillary) API. It is used with low load and is never exposed to the Internet, so the built-in flask web server is great.

My current code is as follows:

class API:
    # ... all other stuff here, skipped
    def run():
        app = flask.Flask('API')

        @app.route('/cmd1')
        def cmd1():
            self.cmd1()

        @app.route('/cmd2')
        def cmd2()
            self.cmd2()

        app.run()

I feel like I did it wrong, because all the documents say "create a flash application at the module level." But I don’t want to do this - it will ruin my tests, and the API is a small part of a larger application that has its own structure and conventions (each "application" is a separate class running in one or more threads).

How can I use Flask inside a class?

Answer 1

, Flask. Flask , ,

from flask import Flask, Response


class EndpointAction(object):

    def __init__(self, action):
        self.action = action
        self.response = Response(status=200, headers={})

    def __call__(self, *args):
        self.action()
        return self.response


class FlaskAppWrapper(object):
    app = None

    def __init__(self, name):
        self.app = Flask(name)

    def run(self):
        self.app.run()

    def add_endpoint(self, endpoint=None, endpoint_name=None, handler=None):
        self.app.add_url_rule(endpoint, endpoint_name, EndpointAction(handler))


def action():
    # Execute anything

a = FlaskAppWrapper('wrap')
a.add_endpoint(endpoint='/ad', endpoint_name='ad', handler=action)
a.run()

:

• EndpointAction , 200. ,
• , __call__,
• ,
• , . , , URL ,

Answer 2

, , . py3, ... ... ...

Answer 3

, , .

FLASK :

class EndpointAction(object):

def __init__(self, action):
    self.action = action

def __call__(self, *args):
    # Perform the action
    answer = self.action()
    # Create the answer (bundle it in a correctly formatted HTTP answer)
    self.response = flask.Response(answer, status=200, headers={})
    # Send it
    return self.response

class FlaskAppWrapper(object):

def add_all_endpoints(self):
    # Add root endpoint
    self.add_endpoint(endpoint="/", endpoint_name="/", handler=self.action)

    # Add action endpoints
    self.add_endpoint(endpoint="/add_X", endpoint_name="/add_X", handler=self.add_X)
    # you can add more ... 

def add_endpoint(self, endpoint=None, endpoint_name=None, handler=None):
    self.app.add_url_rule(endpoint, endpoint_name, EndpointAction(handler)) 
    # You can also add options here : "... , methods=['POST'], ... "

# ==================== ------ API Calls ------- ====================
def action(self):
    # Dummy action
    return "action" # String that will be returned and display on the webpage
    # Test it with curl 127.0.0.1:5000

def add_X(self):
    # Dummy action
    return "add_X"
    # Test it with curl 127.0.0.1:5000/add_X