def run(self):
""" Coordinate the job. """
self.logger.info("%s started" % (self.prog,))
self._running = True
action = None
while self._running:
self.supervise()
self.save_status()
if self._config.get("command") == "single":
self.logger.debug("single mode, exiting")
return
wake_time = self.sleep_interval() + time.time()
self.logger.debug("sleeping for %d seconds" % self.sleep_interval())
while wake_time >= time.time():
if self._config.get("pidfile"):
pid_touch(self._config["pidfile"])
action = pid_check(self._config["pidfile"])
if action in ["quit", "stop_supervisor"]:
self.logger.info("asked to %s" % action)
self._running = False
break
elif action == "stop_children":
self.logger.info("stopping all the children")
self._child.stop()
pid_write(self._config["pidfile"], os.getpid())
elif action != "":
self.logger.warning("unknown action: %s" % action)
if not self._running:
break
time.sleep(0.2)
if action != "stop_supervisor":
self.logger.info("stopping all the children")
self._child.stop()
self.logger.info("stopping %s" % (self.prog,))
self.save_status()
def initialize(self):
""" Initialize. """
self._initialize_log()
self._initialize_callback()
self._initialize_daemon()
if self._config.get("pidfile"):
pid_write(self._config["pidfile"], os.getpid(), excl=True)
def stop(self, action="quit"):
""" Quit the process. """
if not self._config.get("pidfile"):
raise SimplevisorError("%s requires a pidfile" % action)
pid = pid_read(self._config["pidfile"])
timeout = 10
if pid and timeout is not None:
print("%s (pid %d) is being told to %s..." %
(self.prog, pid, action))
pid_write(self._config["pidfile"], pid, action)
while timeout >= 0:
try:
os.kill(pid, 0)
except OSError:
break
timeout -= 1
time.sleep(0.5)
try:
os.kill(pid, 0)
except OSError:
print("%s (pid %d) does not seem to be running anymore" %
(self.prog, pid))
sys.exit(0)
pid_quit(self._config["pidfile"], self.prog)
sys.exit(0)
def start(self):
""" Do start action. """
signal.signal(signal.SIGINT, self.on_signal)
signal.signal(signal.SIGTERM, self.on_signal)
signal.signal(signal.SIGHUP, self.on_signal)
self.pre_run()
if self._config.get("daemon"):
daemonize()
run_function = log.log_exceptions(
logger_name=self.prog,
re_raise=False)(self.run)
else:
run_function = log.log_exceptions(
logger_name=self.prog,
re_raise=True)(self.run)
if self._config.get("pidfile"):
pid_write(self._config["pidfile"], os.getpid(), excl=True)
try:
run_function()
except:
self.save_status()
if self._config.get("pidfile"):
pid_remove(self._config.get("pidfile"))
raise sys.exc_info()[1]
if self._config.get("pidfile"):
pid_remove(self._config.get("pidfile"))
def initialize(self):
""" Initialize. """
self._initialize_log()
self._initialize_callback()
self._initialize_daemon()
if self._config.get("pidfile"):
pid_write(self._config["pidfile"], os.getpid(), excl=True)
def single(self):
""" Do single action. """
if self._config.get("pidfile"):
pid_write(self._config["pidfile"], os.getpid(), excl=True)
self.pre_run()
self.run()
if self._config.get("pidfile"):
pid_remove(self._config.get("pidfile"))
def send_action(self, action="stop_children"):
""" Tell the supervisor to execute an action. """
if not self._config.get("pidfile"):
raise SimplevisorError("%s requires a pidfile" % action)
pid = pid_read(self._config["pidfile"])
if pid:
print("%s (pid %d) is being told to %s..." % (self.prog, pid, action))
pid_write(self._config["pidfile"], pid, action)
elif pid is not None:
print("%s does not seem to be running anymore" % (self.prog,))
def run(self):
""" Coordinate the job. """
self.logger.info("started")
self._running = True
action = None
while self._running:
self.supervise()
self.save_status()
wake_time = self.sleep_interval() + time.time()
self.logger.debug(
"sleeping for %d seconds", self.sleep_interval())
while wake_time >= time.time():
if self._config.get("pidfile"):
pid_touch(self._config["pidfile"])
action = pid_check(self._config["pidfile"])
if action != "":
self.logger.info("asked to %s", action)
pid_write(self._config["pidfile"], os.getpid())
if action in ["quit", "stop_supervisor"]:
self._running = False
elif action == "stop_children":
self._child.stop()
elif action == "wake_up":
break
elif action[:14] == "restart_child ":
target = self.get_child(action[14:])
target.restart()
elif action != "":
self.logger.warning("unknown action: %s", action)
if not self._running:
break
time.sleep(0.5)
if action != "stop_supervisor":
self.logger.info("stopping all the children")
self._child.stop()
self.logger.info("stopping")
self.save_status()
self.logger.info("stopped")
