def wait(self):
"""Loop waiting on children to die and respawning as necessary."""
systemd.notify_once()
LOG.debug('Full set of CONF:')
CONF.log_opt_values(LOG, std_logging.DEBUG)
try:
while True:
self.handle_signal()
self._respawn_children()
# No signal means that stop was called. Don't clean up here.
if not self.sigcaught:
return
signame = _signo_to_signame(self.sigcaught)
LOG.info(_LI('Caught %s, stopping children'), signame)
if not _is_sighup_and_daemon(self.sigcaught):
break
for pid in self.children:
os.kill(pid, signal.SIGHUP)
self.running = True
self.sigcaught = None
except eventlet.greenlet.GreenletExit:
LOG.info(_LI("Wait called after thread killed. Cleaning up."))
self.stop()
def wait(self):
"""Loop waiting on children to die and respawning as necessary."""
systemd.notify_once()
LOG.debug('Full set of CONF:')
CONF.log_opt_values(LOG, logging.DEBUG)
try:
while True:
self.handle_signal()
self._respawn_children()
# No signal means that stop was called. Don't clean up here.
if not self.sigcaught:
return
signame = _signo_to_signame(self.sigcaught)
LOG.info(_LI('Caught %s, stopping children'), signame)
if not _is_sighup_and_daemon(self.sigcaught):
break
cfg.CONF.reload_config_files()
for service in set(
[wrap.service for wrap in self.children.values()]):
service.reset()
for pid in self.children:
os.kill(pid, signal.SIGHUP)
self.running = True
self.sigcaught = None
except eventlet.greenlet.GreenletExit:
LOG.info(_LI("Wait called after thread killed. Cleaning up."))
self.stop()
def wait(self, ready_callback=None):
systemd.notify_once()
while True:
self.handle_signal()
status, signo = self._wait_for_exit_or_signal(ready_callback)
if not _is_sighup_and_daemon(signo):
return status
self.restart()
def wait(self, ready_callback=None):
systemd.notify_once()
while True:
self.handle_signal()
status, signo = self._wait_for_exit_or_signal(ready_callback)
if not _is_sighup_and_daemon(signo):
return status
self.restart()
def run_service(service, done):
"""Service start wrapper.
:param service: service to run
:param done: event to wait on until a shutdown is triggered
:returns: None
"""
service.start()
systemd.notify_once()
done.wait()
def run_service(service, done):
"""Service start wrapper.
:param service: service to run
:param done: event to wait on until a shutdown is triggered
:returns: None
"""
service.start()
systemd.notify_once()
done.wait()
def _launch(self, application, workers=0):
service = WorkerService(self, application)
if workers < 1:
# The API service should run in the current process.
self._server = service
service.start()
systemd.notify_once()
else:
# The API service runs in a number of child processes.
# Minimize the cost of checking for child exit by extending the
# wait interval past the default of 0.01s.
self._server = common_service.ProcessLauncher(wait_interval=1.0)
self._server.launch_service(service, workers=workers)
def _launch(self, application, workers=0):
service = WorkerService(self, application)
if workers < 1:
# The API service should run in the current process.
self._server = service
service.start()
systemd.notify_once()
else:
# The API service runs in a number of child processes.
# Minimize the cost of checking for child exit by extending the
# wait interval past the default of 0.01s.
self._server = common_service.ProcessLauncher(wait_interval=1.0)
self._server.launch_service(service, workers=workers)
def main():
eventlet.monkey_patch()
# the configuration will be read into the cfg.CONF global data structure
config.parse(sys.argv[1:])
if not cfg.CONF.config_file:
sys.exit(
_("ERROR: Unable to find configuration file via the default"
" search paths (~/.neutron/, ~/, /etc/neutron/, /etc/) and"
" the '--config-file' option!"))
try:
neutron_service = service.serve_wsgi(service.NeutronApiService)
systemd.notify_once()
neutron_service.wait()
except RuntimeError as e:
sys.exit(_("ERROR: %s") % e)
def _launch(self, application, workers=0):
service = WorkerService(self, application)
if workers < 1:
# The API service should run in the current process.
self._server = service
service.start()
systemd.notify_once()
else:
# dispose the whole pool before os.fork, otherwise there will
# be shared DB connections in child processes which may cause
# DB errors.
api.dispose()
# The API service runs in a number of child processes.
# Minimize the cost of checking for child exit by extending the
# wait interval past the default of 0.01s.
self._server = common_service.ProcessLauncher(wait_interval=1.0)
self._server.launch_service(service, workers=workers)
def _launch(self, application, workers=0):
service = WorkerService(self, application)
if workers < 1:
# The API service should run in the current process.
self._server = service
service.start()
systemd.notify_once()
else:
# dispose the whole pool before os.fork, otherwise there will
# be shared DB connections in child processes which may cause
# DB errors.
api.dispose()
# The API service runs in a number of child processes.
# Minimize the cost of checking for child exit by extending the
# wait interval past the default of 0.01s.
self._server = common_service.ProcessLauncher(wait_interval=1.0)
self._server.launch_service(service, workers=workers)
def start(self, application, port, host='0.0.0.0', workers=0):
"""Run a WSGI server with the given application."""
self._host = host
self._port = port
backlog = CONF.backlog
self._socket = self._get_socket(self._host,
self._port,
backlog=backlog)
if workers < 1:
# For the case where only one process is required.
self._server = self.pool.spawn(self._run, application,
self._socket)
systemd.notify_once()
else:
# Minimize the cost of checking for child exit by extending the
# wait interval past the default of 0.01s.
self._launcher = common_service.ProcessLauncher(wait_interval=1.0)
self._server = WorkerService(self, application)
self._launcher.launch_service(self._server, workers=workers)
def start(self, application, port, host='0.0.0.0', workers=0):
"""Run a WSGI server with the given application."""
self._host = host
self._port = port
backlog = CONF.backlog
self._socket = self._get_socket(self._host,
self._port,
backlog=backlog)
if workers < 1:
# For the case where only one process is required.
self._server = self.pool.spawn(self._run, application,
self._socket)
systemd.notify_once()
else:
# Minimize the cost of checking for child exit by extending the
# wait interval past the default of 0.01s.
self._launcher = common_service.ProcessLauncher(wait_interval=1.0)
self._server = WorkerService(self, application)
self._launcher.launch_service(self._server, workers=workers)
