# -*- coding: utf-8 -*-

from sanic import Sanic
from functools import wraps
from sanic.response import json

app = Sanic()


def check_request_for_authorization_status(request):
    # Note: Define your check, for instance cookie, session.
    flag = True
    return flag


def authorized():
    def decorator(f):
        @wraps(f)
        async def decorated_function(request, *args, **kwargs):
            # run some method that checks the request
            # for the client's authorization status
            is_authorized = check_request_for_authorization_status(request)

            if is_authorized:
                # the user is authorized.
                # run the handler method and return the response
                response = await f(request, *args, **kwargs)
                return response
            else:
                # the user is not authorized.
                return json({'status': 'not_authorized'}, 403)
        return decorated_function
    return decorator


@app.route("/")
@authorized()
async def test(request):
    return json({'status': 'authorized'})

if __name__ == "__main__":
    app.run(host="0.0.0.0", port=8000)

# -*- coding: utf-8 -*-

from sanic import Sanic
from functools import wraps
from sanic.response import json

app = Sanic()


def check_request_for_authorization_status(request):
    # Note: Define your check, for instance cookie, session.
    flag = True
    return flag


def authorized(f):
    @wraps(f)
    async def decorated_function(request, *args, **kwargs):
        # run some method that checks the request
        # for the client's authorization status
        is_authorized = check_request_for_authorization_status(request)

        if is_authorized:
            # the user is authorized.
            # run the handler method and return the response
            response = await f(request, *args, **kwargs)
            return response
        else:
            # the user is not authorized.
            return json({'status': 'not_authorized'}, 403)
    return decorated_function


@app.route("/")
@authorized
async def test(request):
    return json({'status': 'authorized'})

if __name__ == "__main__":
    app.run(host="0.0.0.0", port=8000)

Reduce nesting for the sample authentication decorator (#1715)