def _wait_startup_before_caching(self):
# NOTE(lucasagomes): Some events are processed at the service's
# startup time and since many services may be started concurrently
# we do not want to use a cached hash ring at that point. This
# method ensures that we start allowing the use of cached HashRings
# once the number of HashRing nodes >= the number of api workers.
# If the startup timeout already expired, there's no reason to
# keep reading from the DB. At this point this will always
# return False
if not self._check_hashring_startup:
return False
api_workers = service._get_api_workers()
nodes = db_hash_ring.get_active_nodes(
self.admin_ctx,
constants.HASH_RING_CACHE_TIMEOUT, self._group, from_host=True)
if len(nodes) >= api_workers:
LOG.debug("Allow caching, nodes %s>=%s", len(nodes), api_workers)
self._check_hashring_startup = False
return False
LOG.debug("Disallow caching, nodes %s<%s", len(nodes), api_workers)
return True
def test_api_workers_from_config(self):
cfg.CONF.set_override('api_workers', 1234)
self.assertEqual(1234,
neutron_service._get_api_workers())
def test_api_workers_default(self):
self.assertEqual(processutils.get_worker_count(),
neutron_service._get_api_workers())
def test_api_workers_from_config(self):
cfg.CONF.set_override('api_workers', 1234)
self.assertEqual(1234, service._get_api_workers())
def test_api_workers_default(self):
self.assertEqual(processutils.get_worker_count(),
service._get_api_workers())
