Source code for ska_sdp_piper.piper.named_instance

class NamedInstance(type):
    """
    Metaclass to manage named instances

    Attributes
    ----------
         _instances: dict
            Mapping between cls, name and instance
    """

    _instances = {}



    @classmethod
    def get_instance(cls, name):
        return cls._instances.get(name, None)


    def __call__(cls, name, *args, **kwargs):
        """
        Creates mapping between cls, name and instance of cls

        Parameters
        ----------
            cls: class
                Class to instantiate
            name: str
                Name of the instance.
            *args
                Additional args
            **kwargs
                Additional named args

        Returns
        -------
            Instance of cls
        """
        new_instance = super(NamedInstance, cls).__call__(
            name, *args, **kwargs
        )

        cls._instances[name] = new_instance

        return new_instance