virsh.py 文件源码

def power_state_virsh(
            self, power_address, power_id, power_pass=None, **kwargs):
        """Return the power state for the VM using virsh."""

        # Force password to None if blank, as the power control
        # script will send a blank password if one is not set.
        if power_pass == '':
            power_pass = None

        conn = VirshSSH()
        logged_in = yield deferToThread(conn.login, power_address, power_pass)
        if not logged_in:
            raise VirshError('Failed to login to virsh console.')

        state = yield deferToThread(conn.get_machine_state, power_id)
        if state is None:
            raise VirshError('Failed to get domain: %s' % power_id)

        try:
            return VM_STATE_TO_POWER_STATE[state]
        except KeyError:
            raise VirshError('Unknown state: %s' % state)