def start(self):
verstr = version.version_string_with_package()
LOG.audit(_('Starting %(topic)s node (version %(version)s)'), {
'topic': self.topic,
'version': verstr
})
self.basic_config_check()
self.manager.init_host()
self.model_disconnected = False
ctxt = context.get_admin_context()
try:
self.service_ref = self.conductor_api.service_get_by_args(
ctxt, self.host, self.binary)
self.service_id = self.service_ref['id']
except exception.NotFound:
self.service_ref = self._create_service_ref(ctxt)
if self.backdoor_port is not None:
self.manager.backdoor_port = self.backdoor_port
self.conn = rpc.create_connection(new=True)
LOG.debug(
_("Creating Consumer connection for Service %s") % self.topic)
self.manager.pre_start_hook(rpc_connection=self.conn)
rpc_dispatcher = self.manager.create_rpc_dispatcher(self.backdoor_port)
# Share this same connection for these Consumers
self.conn.create_consumer(self.topic, rpc_dispatcher, fanout=False)
node_topic = '%s.%s' % (self.topic, self.host)
self.conn.create_consumer(node_topic, rpc_dispatcher, fanout=False)
self.conn.create_consumer(self.topic, rpc_dispatcher, fanout=True)
# Consume from all consumers in a thread
self.conn.consume_in_thread()
self.manager.post_start_hook()
LOG.debug(
_("Join ServiceGroup membership for this service %s") % self.topic)
# Add service to the ServiceGroup membership group.
pulse = self.servicegroup_api.join(self.host, self.topic, self)
if pulse:
self.timers.append(pulse)
if self.periodic_enable:
if self.periodic_fuzzy_delay:
initial_delay = random.randint(0, self.periodic_fuzzy_delay)
else:
initial_delay = None
periodic = loopingcall.DynamicLoopingCall(self.periodic_tasks)
periodic.start(initial_delay=initial_delay,
periodic_interval_max=self.periodic_interval_max)
self.timers.append(periodic)
def add_dynamic_timer(self,
callback,
initial_delay=None,
periodic_interval_max=None,
*args,
**kwargs):
timer = loopingcall.DynamicLoopingCall(callback, *args, **kwargs)
timer.start(initial_delay=initial_delay,
periodic_interval_max=periodic_interval_max)
self.timers.append(timer)