#!/usr/local/munki/python
# encoding: utf-8
#
# Copyright 2018-2020 Greg Neagle.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
precache_agent

Created by Greg Neagle on 2018-07-18.

A privileged agent that downloads optional installs items marked for precaching.
"""
from __future__ import absolute_import

import signal
import sys
import time

from munkilib import display
from munkilib.updatecheck import download


def signal_handler(signum, _):
    """Handle any signals we've been told to.
    Right now just handle SIGTERM so clean up can happen, like
    garbage collection, which will trigger object destructors and
    kill any launchd processes we've started."""
    if signum == signal.SIGTERM:
        display.display_info("###    Precaching session stopped    ###")
        sys.exit()


if __name__ == '__main__':
    # install handler for SIGTERM
    signal.signal(signal.SIGTERM, signal_handler)
    # turn off Munki status output; this should be silent
    display.munkistatusoutput = False
    download.cache()
    # sleep 10 seconds to prevent launchd from complaining
    time.sleep(10)