def test_update_configuration(self):
nodes = ['0', '1']
self.cluster.zookeeper.get_children.return_value = nodes
brokers = BrokerMap(self.cluster)
self.assertEqual(len(brokers), len(nodes))
broker = brokers.get(1)
# Emulate a broker entering the pool.
nodes = ['0', '1', '2']
self.cluster.zookeeper.get_children.return_value = nodes
brokers._configure(event=mock.Mock())
self.assertEqual(len(brokers), len(nodes))
self.assertIs(broker, brokers.get(1))
self.assertFalse(broker.is_dead)
# Emulate a broker leaving the pool.
nodes = ['0', '2']
self.cluster.zookeeper.get_children.return_value = nodes
brokers._configure(event=mock.Mock())
self.assertEqual(len(brokers), len(nodes))
self.assertTrue(broker.is_dead)
with self.assertRaises(KeyError):
brokers.get(1)
def test_initial_configuration(self, cw):
nodes = ['0', '1', '2', '5']
with mock.patch('samsa.brokers.DataWatch'):
brokers = BrokerMap(self.cluster)
brokers._configure(nodes)
self.assertEqual(len(brokers), len(nodes))
self.assertEqual(brokers.keys(), map(int, nodes))
self.assertTrue(all(isinstance(value, Broker) for value
in brokers.values()))
def test_initial_configuration(self, cw):
nodes = ['0', '1', '2', '5']
with mock.patch('samsa.brokers.DataWatch'):
brokers = BrokerMap(self.cluster)
brokers._configure(nodes)
self.assertEqual(len(brokers), len(nodes))
self.assertEqual(brokers.keys(), map(int, nodes))
self.assertTrue(
all(isinstance(value, Broker) for value in brokers.values()))
def test_update_configuration(self, w1, w2):
nodes = ['0', '1']
brokers = BrokerMap(self.cluster)
brokers._configure(nodes)
self.assertEqual(len(brokers), len(nodes))
broker = brokers.get(1)
# Emulate a broker entering the pool.
nodes = ['0', '1', '2']
self.cluster.zookeeper.get_children.return_value = nodes
brokers._configure(nodes)
self.assertEqual(len(brokers), len(nodes))
self.assertIs(broker, brokers.get(1))
self.assertFalse(broker.is_dead)
# Emulate a broker leaving the pool.
nodes = ['0', '2']
brokers._configure(nodes)
self.assertEqual(len(brokers), len(nodes))
self.assertTrue(broker.is_dead)
with self.assertRaises(KeyError):
brokers.get(1)
