def test_failed_group_join(self):
client = AIOKafkaClient(loop=self.loop, bootstrap_servers=self.hosts)
subscription = SubscriptionState('latest')
subscription.subscribe(topics=('topic1', ))
coordinator = GroupCoordinator(client,
subscription,
loop=self.loop,
retry_backoff_ms=10)
@asyncio.coroutine
def do_rebalance():
rebalance = CoordinatorGroupRebalance(
coordinator,
coordinator.group_id,
coordinator.coordinator_id,
subscription.subscription,
coordinator._assignors,
coordinator._session_timeout_ms,
coordinator._retry_backoff_ms,
loop=self.loop)
yield from rebalance.perform_group_join()
yield from client.bootstrap()
yield from self.wait_topic(client, 'topic1')
mocked = mock.MagicMock()
coordinator._client = mocked
# no exception expected, just wait
mocked.send.side_effect = Errors.GroupLoadInProgressError()
yield from do_rebalance()
self.assertEqual(coordinator.need_rejoin(), True)
mocked.send.side_effect = Errors.InvalidGroupIdError()
with self.assertRaises(Errors.InvalidGroupIdError):
yield from do_rebalance()
self.assertEqual(coordinator.need_rejoin(), True)
# no exception expected, member_id should be reseted
coordinator.member_id = 'some_invalid_member_id'
mocked.send.side_effect = Errors.UnknownMemberIdError()
yield from do_rebalance()
self.assertEqual(coordinator.need_rejoin(), True)
self.assertEqual(coordinator.member_id,
JoinGroupRequest.UNKNOWN_MEMBER_ID)
# no exception expected, coordinator_id should be reseted
coordinator.coordinator_id = 'some_id'
mocked.send.side_effect = Errors.GroupCoordinatorNotAvailableError()
yield from do_rebalance()
self.assertEqual(coordinator.need_rejoin(), True)
self.assertEqual(coordinator.coordinator_id, None)
yield from client.close()
def test_failed_sync_group(self):
client = AIOKafkaClient(loop=self.loop, bootstrap_servers=self.hosts)
subscription = SubscriptionState('latest')
subscription.subscribe(topics=('topic1', ))
coordinator = GroupCoordinator(client,
subscription,
loop=self.loop,
heartbeat_interval_ms=20000)
@asyncio.coroutine
def do_sync_group():
rebalance = CoordinatorGroupRebalance(
coordinator,
coordinator.group_id,
coordinator.coordinator_id,
subscription.subscription,
coordinator._assignors,
coordinator._session_timeout_ms,
coordinator._retry_backoff_ms,
loop=self.loop)
yield from rebalance._on_join_follower()
with self.assertRaises(GroupCoordinatorNotAvailableError):
yield from do_sync_group()
mocked = mock.MagicMock()
coordinator._client = mocked
coordinator.member_id = 'some_invalid_member_id'
coordinator.coordinator_unknown = asyncio.coroutine(lambda: False)
mocked.send.side_effect = Errors.UnknownMemberIdError()
with self.assertRaises(Errors.UnknownMemberIdError):
yield from do_sync_group()
self.assertEqual(coordinator.member_id,
JoinGroupRequest.UNKNOWN_MEMBER_ID)
mocked.send.side_effect = Errors.NotCoordinatorForGroupError()
coordinator.coordinator_id = 'some_id'
with self.assertRaises(Errors.NotCoordinatorForGroupError):
yield from do_sync_group()
self.assertEqual(coordinator.coordinator_id, None)
mocked.send.side_effect = KafkaError()
with self.assertRaises(KafkaError):
yield from do_sync_group()
# client sends LeaveGroupRequest to group coordinator
# if generation > 0 (means that client is a member of group)
# expecting no exception in this case (error should be ignored in close
# method)
coordinator.generation = 33
yield from coordinator.close()