def filter_message(prefix: str):
    def inner_check(func: typing.Callable[[str], None]):
        def inner_deeper_check(arg: str):
            if arg.startswith(prefix):
                print('Checking prefix....OK')
                func(arg)
                print('post process...OK')
            else:
                print('Checking prefix....Failed')
                print('access denied')
        return inner_deeper_check
    return inner_check

@filter_message(prefix="test")
def orig_func(arg1: str):
    print(f"arg1: {arg1}")
    
if __name__ == "__main__":
    orig_func("Hello World!")
    orig_func("test: Hello World!")