Subversion Repositories SmartDukaan

Rev

Rev 3894 | Rev 19284 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 3894 Rev 19283
Line 8... Line 8...
8 
Some of the references within the code comments are no longer available.
 8 
Some of the references within the code comments are no longer available.
9 
 
 9 
 
10 
'''
 10 
'''
11 
 
 11 
 
12 
import sys, os, time, atexit
 12 
import sys, os, time, atexit
13 
from signal import SIGTERM
13 
from signal import SIGTERM
- 
 
 14 
import logging
14 
 
 15 
 
15 
class Daemon:
 16 
class Daemon:
16 
	"""
 17 
	"""
17 
	A generic daemon class.
 18 
	A generic daemon class.
18
19
Line 21... Line 22...
21 
	def __init__(self, pidfile, stdin='/dev/null', stdout='/dev/null', stderr='/dev/null'):
 22 
	def __init__(self, pidfile, stdin='/dev/null', stdout='/dev/null', stderr='/dev/null'):
22 
		self.stdin = stdin
 23 
		self.stdin = stdin
23 
		self.stdout = stdout
 24 
		self.stdout = stdout
24 
		self.stderr = stderr
 25 
		self.stderr = stderr
25 
		self.pidfile = pidfile
 26 
		self.pidfile = pidfile
- 
 
 27 
		configure_logging(stdout)
26
28
27 
	def daemonize(self):
 29 
	def daemonize(self):
28 
		"""
 30 
		"""
29 
		do the UNIX double-fork magic, see Stevens' "Advanced
31 
		do the UNIX double-fork magic, see Stevens' "Advanced
30 
		Programming in the UNIX Environment" for details (ISBN 0201563177)
 32 
		Programming in the UNIX Environment" for details (ISBN 0201563177)
Line 56... Line 58...
56
58
57 
		# redirect standard file descriptors
 59 
		# redirect standard file descriptors
58 
		sys.stdout.flush()
 60 
		sys.stdout.flush()
59 
		sys.stderr.flush()
 61 
		sys.stderr.flush()
60 
		si = file(self.stdin, 'r')
 62 
		si = file(self.stdin, 'r')
- 
 
 63
- 
 
 64 
		so = os.open(self.stdout, os.O_RDWR)
61 
		so = file(self.stdout, 'a+')
 65 
		#so = file(self.stdout, 'a+')
62 
		se = file(self.stderr, 'a+', 0)
 66 
		se = os.open(self.stderr, os.O_RDWR)
63 
		os.dup2(si.fileno(), sys.stdin.fileno())
 67 
		os.dup2(si.fileno(), sys.stdin.fileno())
64 
		os.dup2(so.fileno(), sys.stdout.fileno())
 68 
		os.dup2(so.fileno(), sys.stdout.fileno())
65 
		os.dup2(se.fileno(), sys.stderr.fileno())
 69 
		os.dup2(se.fileno(), sys.stderr.fileno())
66
70
67 
		# write pidfile
 71 
		# write pidfile
Line 135... Line 139...
135 
		"""
 139 
		"""
136 
		You should override this method when you subclass Daemon. It will be called after the process has been
 140 
		You should override this method when you subclass Daemon. It will be called after the process has been
137 
		daemonized by start() or restart().
 141 
		daemonized by start() or restart().
138 
		"""
 142 
		"""
139 
		pass
 143 
		pass
- 
 
 144 
def configure_logging(logfile):
- 
 
 145 
    fh = logging.FileHandler(logfile, 'w')
- 
 
 146 
    formatter = logging.Formatter(logging.BASIC_FORMAT)
- 
 
 147 
    fh.setFormatter(formatter)
- 
 
 148 
    root = logging.getLogger()
- 
 
 149 
    root.setLevel(logging.ERROR)
- 
 
 150 
    root.addHandler(fh)
140 

            151