Source code for labgrid.strategy.shellstrategy

import enum

import attr

from ..factory import target_factory
from ..step import step
from .common import Strategy, StrategyError


[docs]class Status(enum.Enum): unknown = 0 off = 1 shell = 2
[docs]@target_factory.reg_driver @attr.s(eq=False) class ShellStrategy(Strategy): """ShellStrategy - Strategy to switch to shell""" bindings = { "power": "PowerProtocol", "console": "ConsoleProtocol", "shell": "ShellDriver", } status = attr.ib(default=Status.unknown)
[docs] def __attrs_post_init__(self): super().__attrs_post_init__()
[docs] @step(args=['status']) def transition(self, status, *, step): if not isinstance(status, Status): status = Status[status] if status == Status.unknown: raise StrategyError(f"can not transition to {status}") elif status == self.status: step.skip("nothing to do") return # nothing to do elif status == Status.off: self.target.deactivate(self.console) self.target.activate(self.power) self.power.off() elif status == Status.shell: self.transition(Status.off) # pylint: disable=missing-kwoa self.target.activate(self.console) self.power.cycle() self.target.activate(self.shell) self.shell.run("systemctl is-system-running --wait") else: raise StrategyError( f"no transition found from {self.status} to {status}" ) self.status = status
[docs] @step(args=['status']) def force(self, status, *, step): if not isinstance(status, Status): status = Status[status] if status == Status.unknown: raise StrategyError(f"can not force state {status}") elif status == Status.off: self.target.deactivate(self.shell) self.target.activate(self.power) elif status == Status.shell: self.target.activate(self.power) self.target.activate(self.shell) else: raise StrategyError(f"not setup found for {status}") self.status = status