def daemon(action):
"""
Trigger the daemon, run the action command and return the daemon object
if required.
'action' is a string, either start, stop or status
Returns an instance of deiman.Deiman
"""
d = Deiman(options.pid)
if action == "stop":
d.stop()
sys.exit(0)
elif action == "status":
d.status()
sys.exit(0)
if len(sys.argv) == 1:
print_help()
sys.exit(2)
if action == "start":
d.start()
return d
else:
sys.exit(0)
def daemon(action):
"""
Trigger the daemon, run the action command and return the daemon object
if required.
'action' is a string, either start, stop or status
Returns an instance of deiman.Deiman
"""
d = Deiman(options.pid)
if action == "stop":
d.stop()
sys.exit(0)
elif action == "status":
d.status()
sys.exit(0)
if len(sys.argv) == 1:
print_help()
sys.exit(2)
if action == "start":
d.start()
return d
else:
sys.exit(0)
# Need sys for exit status and argv
import sys
# Import Deiman
from deiman import Deiman
# Create a new instance of Deiman, passing in a PID file to use
# this only instantiates the class, nothing more.
d = Deiman("/tmp/deiman.pid")
# Check incoming argv values to see if we have start, stop or status
# command.
if len(sys.argv) == 1 or sys.argv[1] not in ('start', 'stop', 'status'):
print("Usage: python simple-daemon.py [start, stop, status]")
sys.exit(2)
# Set the incoming action to a shorter variable name, lazy.
act = sys.argv[1]
# Action is start, so tell Deiman to fork itself off in to the
# background.
if act == "start":
d.start()
# Action is stop, this will take the existing PID file, get the
# current process ID and stop the running process.
elif act == "stop":
d.stop()
sys.exit(0)
# Action is status, this will get the current status information
# of the process from /proc. It'll tell you if it's running or not
# and also if it's a zombie process.