def start():
instance = SingleInstance(CLI_LOCK_PATH)
try:
instance.start()
except InstanceAlreadyRunning:
raise RetryFailed()
return instance
def start():
instance = SingleInstance(CLI_LOCK_PATH)
try:
instance.start()
except InstanceAlreadyRunning:
raise RetryFailed()
return instance
def main():
create_required_directories()
init_logging()
log = logging.getLogger(LOGGER_NAME)
instance = SingleInstance(DAEMON_LOCK_PATH)
try:
instance.start()
except InstanceAlreadyRunning:
log.info('Daemon: Could not acquire single instance lock. Aborting.')
else:
try:
with open(DAEMON_PID_PATH, 'w') as f:
f.write(str(os.getpid()))
# TODO find out why the core isn't killing itself when the daemon is killed
# TODO maybe I should handle the SIGTERM signal?
monkey.patch_all()
gevent.spawn(check_own_version, log)
# Singletons
core_client = CoreClient()
ui_config = UIConfig()
notifs_handler = NotificationsHandler()
ui_listener = UIListener(UI_LISTENER_SOCKET_ADDRESS, core_client,
ui_config, notifs_handler)
core_listener = CoreListener(CORE_LISTENER_SOCKET_ADDRESS,
core_client, ui_config,
notifs_handler)
core = Core(core_client)
# Attempt to stop core, just in case there is a dangling core running
core.stop()
ui_listener_greenlet = gevent.spawn(ui_listener.start)
core_listener_greenlet = gevent.spawn(core_listener.start)
watchdog_greenlet = gevent.spawn(core.watchdog)
Events.shutdown_required.wait()
log.info('Daemon: Shutting down')
ui_listener_greenlet.kill(block=True)
core_listener_greenlet.kill(block=True)
watchdog_greenlet.kill(block=True)
# Sending a shutdown to the core should be enough to gracefully kill it,
# but it might ignore us so after a little while, kill it forcefully
try:
core_client.shutdown()
gevent.sleep(1)
except Exception:
log.warning(
'Daemon: Gracefull shutdown has thrown an exception. '
' Will ignore it just shut the core down forcefully.')
core.stop()
except Exception:
log.exception('Daemon: An uncatched error occurred!')
finally:
instance.stop()
def main():
create_required_directories()
init_logging()
log = logging.getLogger(LOGGER_NAME)
instance = SingleInstance(DAEMON_LOCK_PATH)
try:
instance.start()
except InstanceAlreadyRunning:
log.info("Daemon: Could not acquire single instance lock. Aborting.")
else:
try:
with open(DAEMON_PID_PATH, "w") as f:
f.write(str(os.getpid()))
# TODO find out why the core isn't killing itself when the daemon is killed
# TODO maybe I should handle the SIGTERM signal?
monkey.patch_all()
gevent.spawn(check_own_version, log)
# Singletons
core_client = CoreClient()
ui_config = UIConfig()
notifs_handler = NotificationsHandler()
ui_listener = UIListener(UI_LISTENER_SOCKET_ADDRESS, core_client, ui_config, notifs_handler)
core_listener = CoreListener(CORE_LISTENER_SOCKET_ADDRESS, core_client, ui_config, notifs_handler)
core = Core(core_client)
# Attempt to stop core, just in case there is a dangling core running
core.stop()
ui_listener_greenlet = gevent.spawn(ui_listener.start)
core_listener_greenlet = gevent.spawn(core_listener.start)
watchdog_greenlet = gevent.spawn(core.watchdog)
Events.shutdown_required.wait()
log.info("Daemon: Shutting down")
ui_listener_greenlet.kill(block=True)
core_listener_greenlet.kill(block=True)
watchdog_greenlet.kill(block=True)
# Sending a shutdown to the core should be enough to gracefully kill it,
# but it might ignore us so after a little while, kill it forcefully
try:
core_client.shutdown()
gevent.sleep(1)
except Exception:
log.warning(
"Daemon: Gracefull shutdown has thrown an exception. "
" Will ignore it just shut the core down forcefully."
)
core.stop()
except Exception:
log.exception("Daemon: An uncatched error occurred!")
finally:
instance.stop()