def get_lock(uuid):
if CONF.standalone:
return InternalLock(uuid)
coordinator = coordination.get_coordinator()
lock = coordinator.get_lock(uuid)
return ToozLock(lock)
def init_host(self):
"""Initialize Worker host
Init db connection, load and validate processing
hooks, runs periodic tasks.
:returns None
"""
if CONF.processing.store_data == 'none':
LOG.warning('Introspection data will not be stored. Change '
'"[processing] store_data" option if this is not '
'the desired behavior')
else:
LOG.info('Introspection data will be stored in the %s backend',
CONF.processing.store_data)
db.init()
try:
hooks = plugins_base.validate_processing_hooks()
except Exception as exc:
LOG.critical(str(exc))
sys.exit(1)
LOG.info('Enabled processing hooks: %s', [h.name for h in hooks])
driver = pxe_filter.driver()
driver.init_filter()
periodic_clean_up_ = periodics.periodic(
spacing=CONF.clean_up_period)(periodic_clean_up)
self._periodics_worker = periodics.PeriodicWorker(
callables=[(driver.get_periodic_sync_task(), None, None),
(periodic_clean_up_, None, None)],
executor_factory=periodics.ExistingExecutor(utils.executor()),
on_failure=self._periodics_watchdog)
utils.executor().submit(self._periodics_worker.start)
if CONF.enable_mdns:
endpoint = keystone.get_endpoint('service_catalog')
self._zeroconf = mdns.Zeroconf()
self._zeroconf.register_service('baremetal-introspection',
endpoint)
if not CONF.standalone:
try:
coordinator = coordination.get_coordinator(prefix='conductor')
coordinator.start(heartbeat=True)
coordinator.join_group()
except tooz.ToozError:
with excutils.save_and_reraise_exception():
LOG.critical('Failed when connecting to coordination '
'backend.')
self.del_host()
else:
LOG.info('Successfully connected to coordination backend.')
def get_random_topic():
coordinator = coordination.get_coordinator(prefix='api')
members = coordinator.get_members()
hosts = []
for member in members:
# NOTE(kaifeng) recomposite host in case it contains '.'
parts = member.decode('ascii').split('.')
if len(parts) < 3:
LOG.warning('Found invalid member %s', member)
continue
if parts[1] == 'conductor':
hosts.append('.'.join(parts[2:]))
if not hosts:
raise utils.NoAvailableConductor('No available conductor service')
topic = '%s.%s' % (manager.MANAGER_TOPIC, random.choice(hosts))
return topic
def del_host(self):
"""Shutdown the ironic inspector conductor service."""
if not CONF.standalone:
try:
coordinator = coordination.get_coordinator(prefix='conductor')
if coordinator.started:
coordinator.leave_group()
coordinator.stop()
except tooz.ToozError:
LOG.exception('Failed to stop coordinator')
if not self._shutting_down.acquire(blocking=False):
LOG.warning('Attempted to shut down while already shutting down')
return
pxe_filter.driver().tear_down_filter()
if self._periodics_worker is not None:
try:
self._periodics_worker.stop()
self._periodics_worker.wait()
except Exception as e:
LOG.exception(
'Service error occurred when stopping '
'periodic workers. Error: %s', e)
self._periodics_worker = None
if utils.executor().alive:
utils.executor().shutdown(wait=True)
if self._zeroconf is not None:
self._zeroconf.close()
self._zeroconf = None
self._shutting_down.release()
LOG.info('Shut down successfully')
def start_coordinator():
"""Create a coordinator instance for non-standalone case."""
if not CONF.standalone:
coordinator = coordination.get_coordinator(prefix='api')
coordinator.start(heartbeat=False)
LOG.info('Sucessfully created coordinator.')
def test_get_with_prefix(self, mock_coordinator):
coordination.get_coordinator(prefix='conductor')
mock_coordinator.assert_called_once_with(prefix='conductor')
def test_get(self, mock_coordinator):
coordination.get_coordinator()
mock_coordinator.assert_called_once_with(prefix=None)
def init_host(self):
"""Initialize Worker host
Init db connection, load and validate processing
hooks, runs periodic tasks.
:returns None
"""
if CONF.processing.store_data == 'none':
LOG.warning('Introspection data will not be stored. Change '
'"[processing] store_data" option if this is not '
'the desired behavior')
else:
LOG.info('Introspection data will be stored in the %s backend',
CONF.processing.store_data)
db.init()
self.coordinator = None
try:
self.coordinator = coordination.get_coordinator(prefix='conductor')
self.coordinator.start(heartbeat=True)
self.coordinator.join_group()
except Exception as exc:
if CONF.standalone:
LOG.info(
'Coordination backend cannot be started, assuming '
'no other instances are running. Error: %s', exc)
self.coordinator = None
else:
with excutils.save_and_reraise_exception():
LOG.critical(
'Failure when connecting to coordination '
'backend',
exc_info=True)
self.del_host()
else:
LOG.info('Successfully connected to coordination backend.')
try:
hooks = plugins_base.validate_processing_hooks()
except Exception as exc:
LOG.critical(str(exc))
sys.exit(1)
LOG.info('Enabled processing hooks: %s', [h.name for h in hooks])
driver = pxe_filter.driver()
driver.init_filter()
periodic_clean_up_ = periodics.periodic(
spacing=CONF.clean_up_period,
enabled=(CONF.clean_up_period != 0))(periodic_clean_up)
sync_with_ironic_ = periodics.periodic(
spacing=CONF.clean_up_period,
enabled=(CONF.clean_up_period != 0))(sync_with_ironic)
callables = [(periodic_clean_up_, None, None),
(sync_with_ironic_, (self, ), None)]
driver_task = driver.get_periodic_sync_task()
if driver_task is not None:
callables.append((driver_task, None, None))
# run elections periodically if we have a coordinator
# that we were able to start
if (self.coordinator and self.coordinator.started):
periodic_leader_election_ = periodics.periodic(
spacing=CONF.leader_election_interval)(
periodic_leader_election)
callables.append((periodic_leader_election_, (self, ), None))
self._periodics_worker = periodics.PeriodicWorker(
callables=callables,
executor_factory=periodics.ExistingExecutor(utils.executor()),
on_failure=self._periodics_watchdog)
utils.executor().submit(self._periodics_worker.start)
if CONF.enable_mdns:
endpoint = keystone.get_endpoint('service_catalog')
self._zeroconf = mdns.Zeroconf()
self._zeroconf.register_service('baremetal-introspection',
endpoint)
