File: features.py

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from os import getenv

from pubnub.exceptions import PubNubException

flags = {"PN_ENABLE_ENTITIES": getenv("PN_ENABLE_ENTITIES", False)}


def feature_flag(flag):
    def not_implemented(*args, **kwargs):
        raise PubNubException(errormsg="This feature is not enabled")

    def inner(method):
        if flag not in flags.keys():
            raise PubNubException(errormsg="Flag not supported")

        if not flags[flag]:
            return not_implemented
        return method

    return inner