#!/usr/bin/env python
# -*- cpy-indent-level: 4; indent-tabs-mode: nil -*-
# ex: set expandtab softtabstop=4 shiftwidth=4:
#
# Copyright (C) 2008,2009,2010,2012,2013,2014,2015,2016  Contributor
#
# 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
#
#     http://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.
"""Test module for stopping the broker."""

import os
import signal
from time import sleep

import unittest

if __name__ == "__main__":
    import utils
    utils.import_depends()

from aquilon.config import Config


class TestBrokerStop(unittest.TestCase):

    @classmethod
    def setUpClass(cls):
        cls.config = Config()

    def setUp(self):
        pass

    def tearDown(self):
        pass

    def teststop(self):
        pidfile = os.path.join(self.config.get("broker", "rundir"), "aqd.pid")
        self.terminate_daemon(pidfile)

    def terminate_daemon(self, pidfile):
        self.assertTrue(os.path.exists(pidfile), msg=pidfile)
        with open(pidfile) as f:
            pid = f.readline()
        self.assertNotEqual(pid, "")
        pid = int(pid)
        os.kill(pid, signal.SIGTERM)

        # Wait for the broker to shut down. E.g. generating code coverage may
        # take some time.
        i = 0
        while i < 180:
            i += 1
            try:
                os.kill(pid, 0)
            except OSError:
                break
            sleep(1)

        # Verify that the broker is down
        self.assertRaises(OSError, os.kill, pid, 0)

    def testeventsstop(self):
        pidfile = os.path.join(self.config.get('broker', 'rundir'), 'read_events.pid')
        self.terminate_daemon(pidfile)


if __name__ == '__main__':
    suite = unittest.TestLoader().loadTestsFromTestCase(TestBrokerStop)
    unittest.TextTestRunner(verbosity=2).run(suite)
