#!/usr/bin/python
#
# Copyright (c) 2003 Intel Corporation
# All rights reserved.
#
# Copyright (c) 2004-2006 The Trustees of Princeton University
# All rights reserved.


import os

from Exceptions import *
import BootAPI


def Run(vars, log):
    """
        Stop the RunlevelAgent.py script.  Should proceed
        kexec to reset run_level to 'boot' before kexec
    """

    log.write("\n\nStep: Stopping RunlevelAgent.py\n")

    try:
        cmd = "{}/RunlevelAgent.py".format(vars['BM_SOURCE_DIR'])
        # raise error if script is not present.
        os.stat(cmd)
        os.system("/usr/bin/python {} stop".format(cmd))
    except KeyError as var:
        raise BootManagerException("Missing variable in vars: {}\n".format(var))
    except ValueError as var:
        raise BootManagerException("Variable in vars, shouldn't be: {}\n".format(var))

    try:
        update_vals = {}
        update_vals['run_level'] = 'boot'
        BootAPI.call_api_function(vars, "ReportRunlevel", (update_vals,))
    except BootManagerException as e:
        log.write("Unable to update boot state for this node at PLC: {}.\n".format(e))

    return 1