Replaced tabs with whitespaces.

This commit is contained in:
Johannes Findeisen 2021-11-14 04:57:09 +01:00
commit 8811a1c293

View file

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