pacemaker/cts/pacemaker-cts-dummyd.in

#!@PYTHON@
""" Slow-starting idle daemon that notifies systemd when it starts
"""

# Pacemaker targets compatibility with Python 2.7 and 3.2+
from __future__ import print_function, unicode_literals, absolute_import, division

__copyright__ = "Copyright 2014-2018 Andrew Beekhof <andrew@beekhof.net>"
__license__ = "GNU General Public License version 2 or later (GPLv2+) WITHOUT ANY WARRANTY"

import sys
import time
import signal
import subprocess
have_systemd_daemon = True
try:
    import systemd.daemon
except ImportError:
    have_systemd_daemon = False

delay = None

def parse_args():
    global delay

    # Lone argument is a number of seconds to delay start and stop
    if len(sys.argv) > 0:
        try:
            delay = float(sys.argv[1])
        except ValueError:
            delay = None


def twiddle():
    global delay

    if delay is not None:
        time.sleep(delay)


def bye(signum, frame):
    twiddle()
    sys.exit(0)


if __name__ == "__main__":

    parse_args()
    signal.signal(signal.SIGTERM, bye)
    twiddle()
    if have_systemd_daemon:
        systemd.daemon.notify("READY=1")
    else:
        subprocess.call(["systemd-notify", "READY=1"])

    # This isn't a "proper" daemon, but that would be overkill for testing purposes
    while True:
        time.sleep(600.0)