python_daemon_context_manager_with_signal_handling_and_pidfile.py

1import daemon
2import lockfile
3import time
4
5from spam import do_main_program
6
7context = daemon.DaemonContext(
8    working_directory='/var/lib/spam',
9    umask=0o002,
10    pidfile=lockfile.FileLock('/var/run/spam.pid'),
11    )
12
13context.signal_map = {
14    signal.SIGTERM: cleanup_stop,
15    signal.SIGHUP: 'terminate',
16    signal.SIGUSR1: reload_program_config,
17    }
18
19mail_gid = grp.getgrnam('mail').gr_gid
20context.gid = mail_gid
21
22important_file = open('test.log', 'w')
23context.files_preserve = [important_file]
24
25with context:
26    do_main_program()