Replaced tabs with whitespaces.
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1 changed files with 91 additions and 91 deletions
150
uplink/daemon.py
150
uplink/daemon.py
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@ -19,94 +19,94 @@ import signal
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# TODO: Check why pid files are not being deleted when sending the TERM signal
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class Daemon:
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def __init__(self, pid_file):
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self.pid_file = pid_file
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def __init__(self, pid_file):
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self.pid_file = pid_file
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def daemonize(self):
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try:
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pid = os.fork()
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if pid > 0:
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sys.exit(0)
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except OSError as err:
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sys.stderr.write('fork #1 failed: {0}\n'.format(err))
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sys.exit(1)
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def daemonize(self):
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try:
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pid = os.fork()
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if pid > 0:
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sys.exit(0)
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except OSError as err:
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sys.stderr.write('fork #1 failed: {0}\n'.format(err))
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sys.exit(1)
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os.chdir('/')
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os.setsid()
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os.umask(0)
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os.chdir('/')
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os.setsid()
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os.umask(0)
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try:
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pid = os.fork()
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if pid > 0:
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sys.exit(0)
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except OSError as err:
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sys.stderr.write('fork #2 failed: {0}\n'.format(err))
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sys.exit(1)
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try:
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pid = os.fork()
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if pid > 0:
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sys.exit(0)
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except OSError as err:
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sys.stderr.write('fork #2 failed: {0}\n'.format(err))
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sys.exit(1)
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sys.stdout.flush()
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sys.stderr.flush()
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si = open(os.devnull, 'r')
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so = open(os.devnull, 'a+')
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se = open(os.devnull, 'a+')
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sys.stdout.flush()
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sys.stderr.flush()
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si = open(os.devnull, 'r')
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so = open(os.devnull, 'a+')
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se = open(os.devnull, 'a+')
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os.dup2(si.fileno(), sys.stdin.fileno())
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os.dup2(so.fileno(), sys.stdout.fileno())
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os.dup2(se.fileno(), sys.stderr.fileno())
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os.dup2(si.fileno(), sys.stdin.fileno())
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os.dup2(so.fileno(), sys.stdout.fileno())
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os.dup2(se.fileno(), sys.stderr.fileno())
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atexit.register(self.del_pid)
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atexit.register(self.del_pid)
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pid = str(os.getpid())
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with open(self.pid_file, 'w+') as f:
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f.write(pid + '\n')
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pid = str(os.getpid())
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with open(self.pid_file, 'w+') as f:
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f.write(pid + '\n')
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def del_pid(self):
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os.remove(self.pid_file)
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def del_pid(self):
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os.remove(self.pid_file)
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def start(self):
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try:
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with open(self.pid_file, 'r') as pf:
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pid = int(pf.read().strip())
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except IOError:
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pid = None
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def start(self):
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try:
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with open(self.pid_file, 'r') as pf:
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pid = int(pf.read().strip())
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except IOError:
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pid = None
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if pid:
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message = "pid_file {0} already exist. Daemon already running?\n"
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sys.stderr.write(message.format(self.pid_file))
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sys.exit(1)
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if pid:
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message = "pid_file {0} already exist. Daemon already running?\n"
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sys.stderr.write(message.format(self.pid_file))
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sys.exit(1)
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self.daemonize()
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self.run()
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self.daemonize()
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self.run()
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def stop(self):
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try:
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with open(self.pid_file, 'r') as pf:
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pid = int(pf.read().strip())
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except IOError:
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pid = None
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def stop(self):
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try:
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with open(self.pid_file, 'r') as pf:
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pid = int(pf.read().strip())
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except IOError:
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pid = None
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if not pid:
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message = "pid_file {0} does not exist. Daemon not running?\n"
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sys.stderr.write(message.format(self.pid_file))
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return
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if not pid:
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message = "pid_file {0} does not exist. Daemon not running?\n"
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sys.stderr.write(message.format(self.pid_file))
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return
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try:
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while 1:
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os.kill(pid, signal.SIGTERM)
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time.sleep(0.1)
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except OSError as err:
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e = str(err.args)
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if e.find("No such process") > 0:
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if os.path.exists(self.pid_file):
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os.remove(self.pid_file)
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else:
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print(str(err.args))
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sys.exit(1)
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try:
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while 1:
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os.kill(pid, signal.SIGTERM)
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time.sleep(0.1)
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except OSError as err:
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e = str(err.args)
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if e.find("No such process") > 0:
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if os.path.exists(self.pid_file):
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os.remove(self.pid_file)
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else:
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print(str(err.args))
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sys.exit(1)
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def restart(self):
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self.stop()
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self.start()
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def restart(self):
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self.stop()
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self.start()
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def run(self):
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"""Override this method when you subclass Daemon.
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It will be called after the process has been daemonized by
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start() or restart()."""
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def run(self):
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"""Override this method when you subclass Daemon.
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It will be called after the process has been daemonized by
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start() or restart()."""
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