sanic/examples/authorized_sanic.py

from functools import wraps

from sanic import Sanic
from sanic.response import json

app = Sanic("Example")


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)