python2-nstack-shim/nstack/runner.py at master · nstack/python2-nstack-shim

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#!/usr/bin/env python3

# -*- coding: utf-8 -*-

"""

Demo NStack service

"""

import logging

import os

import signal

import sys

import argparse

logger = logging.getLogger('python-runner')

# Because systemd-nspawn is not connect to a TTY, python will

# open stdout and stderr in default file buffering mode. However,

# we want line buffering mode.

sys.stdout = os.fdopen(sys.stdout.fileno(), 'w', 1)

sys.stderr = os.fdopen(sys.stderr.fileno(), 'w', 1)

try:

from gi.repository import GLib

except ImportError:

# support pgi as a fallback

# for use in non-system pythons

import pgi

pgi.install_as_gi()

from pgi.repository import GLib

from pydbus import SessionBus

import nstack

from service import Service

def sigterm_handler(signo, frame):

logger.warn("Received shutdown signal".format(signo))

sys.exit(0)

def main():

# install signal handler

signal.signal(signal.SIGTERM, sigterm_handler)

# get the service name

parser = argparse.ArgumentParser()

parser.add_argument('--debug', action="store_true", help="Enable debugging")

parser.add_argument('name', help="Service Name")

args = parser.parse_args()

loglevel = logging.DEBUG if args.debug else logging.INFO

logging.basicConfig(level=loglevel)

if args.debug:

logger.debug("Enabled debug logging!")

# setup the main loop

loop = GLib.MainLoop()

# publish on dbus and start main loop

try:

with SessionBus().publish(args.name, nstack.DBusWrapper(Service())):

loop.run()

except KeyboardInterrupt:

loop.quit()

return 0

if __name__ == '__main__':

sys.exit(main())

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