Source code for labgrid.strategy.common

import attr

from ..binding import BindingError
from ..driver import Driver


[docs] @attr.s(eq=False) class StrategyError(Exception): msg = attr.ib(validator=attr.validators.instance_of(str))
[docs] @attr.s(eq=False) class Strategy(Driver): # reuse driver handling """ Represents a strategy which places a target into a requested state by calling specific drivers. A strategy usually needs to know some details of a given target. Life cycle: - create - bind (n times) - usage TODO: This might also be just a driver? """
[docs] def __attrs_post_init__(self): super().__attrs_post_init__() if self.target is None: raise BindingError( "Strategies can only be created on a valid target" )
[docs] def on_client_bound(self, client): raise NotImplementedError("Strategies do not support clients")
[docs] def on_activate(self): raise NotImplementedError("Strategies can not be activated")
[docs] def on_deactivate(self): pass
[docs] def resolve_conflicts(self, client): raise NotImplementedError("Strategies do not support clients")
[docs] def transition(self, status): raise NotImplementedError(f"Strategy.transition() is not implemented for {self.__class__.__name__}")
[docs] def force(self, status): raise NotImplementedError(f"Strategy.force() is not implemented for {self.__class__.__name__}")
[docs] def prepare_export(self): """By default, export all drivers bound by the strategy.""" name_map = {} for name in self.bindings.keys(): name_map[getattr(self, name)] = name return name_map