from abc import abstractmethod

from ..singleton import Singleton


class Server(metaclass=Singleton):
    def __init__(self):
        super().__init__()
        self._components = []

    def register_component(self, component):
        self._components.append(component)

    def unregister_component(self, component):
        self._components.remove(component)


    @abstractmethod
    def step(self):
        pass