cache_on_arguments not taking class member variables or class object into consideration

[anandtripathi5]

So lets say I'm having a below example

Class A:
    def __init__(self, param_1, param_2):
        self.param_1 = param_1
        self.param_2 = param_2
    @region.cache_on_arguments()
    def a(self, param):
        return param*self.param_1*self.param_2

So if I call
A(1,2).a(2)
this will cache the function result for other objects too like

A(3,4).a(2)
A(5,6).a(2)

[zzzeek]

so it depends on how prevalent this pattern is, it might be most expedient to use region.get_or_create() directly instead if it's only in a few places. however if you want cache_on_arguments to take things for "self" into account you can use function_key_generator:

Class A:
    def __init__(self, param_1, param_2):
        self.param_1 = param_1
        self.param_2 = param_2

    def _my_key_generator(namespace, fn, to_str=str):

        # this is hardcoded to your fn below, however use inspect.getargspec(fn)
        # to build a cache key dynamically
        def generate_key(self, param):
            return f"{namespace}:{self.param_1}:{self.param_2}:{param}"
        return generate_key

    @region.cache_on_arguments(function_key_generator=_my_key_generator)
    def a(self, param):
        return param*self.param_1*self.param_2