daemonator 0.4

Lightweight and no-nonsense POSIX daemon library for Python (2.x.x/3.x.x)

Lightweight and no-nonsense POSIX daemon library. Extensible, complete with process forking and PID management.

Inspired by Sander Marechal.

License

MIT/X11 - See LICENSE

Getting Started

Installation

# git clone https://github.com/flaviocpontes/daemon-py.git
# cd daemon-py/
# python setup.py install

Note: Daemon-Python, as of version 0.2, has only been tested on Linux. The setup.py script will automatically detect if the underlying platform is compatible, as well as determine the appropriate version of Python.

1. Instantiation

   import daemon
   class MyDaemon(daemon.Daemon):
   """Subclass Daemon-Python."""
   ...
       def run(self):
       """Define what to daemonize by implementing the run() method."""
       ...

2. Implementing control

   Finally, we want to be able to control our daemon.

   ...
   if __name__ == "__main__":
       daemon = MyDaemon('/tmp/mydaemon.pid') #Define a pidfile location (typically located in /tmp or /var/run)
       if len(sys.argv) == 2:
           if 'start' == sys.argv[1]:
               daemon.start()
           elif 'stop' == sys.argv[1]:
               daemon.stop()
           elif 'restart' == sys.argv[1]:
               daemon.restart()
           elif 'status' == sys.argv[1]:
               daemon.status()
           else:
               sys.stdout.write("Unknown command\n")
               sys.exit(2)
           sys.exit(0)
       else:
           sys.stdout.write("Usage: %s start|stop|restart|status\n" % sys.argv[0])
           sys.exit(2)

For a complete basic implementation, see src/test.py