def test_manual_subscribe_pattern(self):
msgs1 = yield from self.send_messages(0, range(0, 10))
msgs2 = yield from self.send_messages(1, range(10, 20))
available_msgs = msgs1 + msgs2
consumer = AIOKafkaConsumer(loop=self.loop,
group_id='test-group',
bootstrap_servers=self.hosts,
auto_offset_reset='earliest',
enable_auto_commit=False)
consumer.subscribe(pattern="topic-test_manual_subs*")
yield from consumer.start()
yield from consumer.seek_to_committed()
result = []
for i in range(20):
msg = yield from consumer.getone()
result.append(msg.value)
self.assertEqual(set(available_msgs), set(result))
yield from consumer.commit(
{TopicPartition(self.topic, 0): OffsetAndMetadata(9, '')})
yield from consumer.seek_to_committed(TopicPartition(self.topic, 0))
msg = yield from consumer.getone(TopicPartition(self.topic, 0))
self.assertEqual(msg.value, b'9')
yield from consumer.commit(
{TopicPartition(self.topic, 0): OffsetAndMetadata(10, '')})
yield from consumer.stop()
# subscribe by topic
consumer = AIOKafkaConsumer(loop=self.loop,
group_id='test-group',
bootstrap_servers=self.hosts,
auto_offset_reset='earliest',
enable_auto_commit=False)
consumer.subscribe(topics=(self.topic, ))
yield from consumer.start()
yield from consumer.seek_to_committed()
result = []
for i in range(10):
msg = yield from consumer.getone()
result.append(msg.value)
self.assertEqual(set(msgs2), set(result))
self.assertEqual(consumer.subscription(), set([self.topic]))
yield from consumer.stop()
def test_unknown_topic_or_partition(self):
consumer = AIOKafkaConsumer(
loop=self.loop, group_id=None,
bootstrap_servers=self.hosts, auto_offset_reset='earliest',
enable_auto_commit=False)
yield from consumer.start()
with self.assertRaises(UnknownTopicOrPartitionError):
yield from consumer.assign([TopicPartition(self.topic, 2222)])
yield from consumer.stop()
def test_consumer_group_without_subscription(self):
consumer = AIOKafkaConsumer(loop=self.loop,
group_id='group-{}'.format(self.id()),
bootstrap_servers=self.hosts,
enable_auto_commit=False,
auto_offset_reset='earliest',
heartbeat_interval_ms=100)
yield from consumer.start()
yield from asyncio.sleep(0.2, loop=self.loop)
yield from consumer.stop()
def test_manual_subscribe_pattern(self):
msgs1 = yield from self.send_messages(0, range(0, 10))
msgs2 = yield from self.send_messages(1, range(10, 20))
available_msgs = msgs1 + msgs2
consumer = AIOKafkaConsumer(
loop=self.loop, group_id='test-group',
bootstrap_servers=self.hosts, auto_offset_reset='earliest',
enable_auto_commit=False)
consumer.subscribe(pattern="topic-test_manual_subs*")
yield from consumer.start()
yield from consumer.seek_to_committed()
result = []
for i in range(20):
msg = yield from consumer.getone()
result.append(msg.value)
self.assertEqual(set(available_msgs), set(result))
yield from consumer.commit(
{TopicPartition(self.topic, 0): OffsetAndMetadata(9, '')})
yield from consumer.seek_to_committed(TopicPartition(self.topic, 0))
msg = yield from consumer.getone()
self.assertEqual(msg.value, b'9')
yield from consumer.commit(
{TopicPartition(self.topic, 0): OffsetAndMetadata(10, '')})
yield from consumer.stop()
# subscribe by topic
consumer = AIOKafkaConsumer(
loop=self.loop, group_id='test-group',
bootstrap_servers=self.hosts, auto_offset_reset='earliest',
enable_auto_commit=False)
consumer.subscribe(topics=(self.topic,))
yield from consumer.start()
yield from consumer.seek_to_committed()
result = []
for i in range(10):
msg = yield from consumer.getone()
result.append(msg.value)
self.assertEqual(set(msgs2), set(result))
self.assertEqual(consumer.subscription(), set([self.topic]))
yield from consumer.stop()
def test_unknown_topic_or_partition(self):
consumer = AIOKafkaConsumer(
loop=self.loop, group_id=None,
bootstrap_servers=self.hosts, auto_offset_reset='earliest',
enable_auto_commit=False)
consumer.subscribe(topics=('some_topic_unknown',))
with self.assertRaises(UnknownTopicOrPartitionError):
yield from consumer.start()
with self.assertRaises(UnknownTopicOrPartitionError):
yield from consumer.assign([TopicPartition(self.topic, 2222)])
def test_consumer_stop_cancels_pending_position_fetches(self):
consumer = AIOKafkaConsumer(self.topic,
loop=self.loop,
bootstrap_servers=self.hosts,
group_id='group-%s' % self.id())
yield from consumer.start()
self.add_cleanup(consumer.stop)
self.assertTrue(consumer._pending_position_fetches)
pending_task = list(consumer._pending_position_fetches)[0]
yield from consumer.stop()
self.assertTrue(pending_task.cancelled())
def consumer_factory(self, **kwargs):
enable_auto_commit = kwargs.pop('enable_auto_commit', True)
auto_offset_reset = kwargs.pop('auto_offset_reset', 'earliest')
group = kwargs.pop('group', 'group-%s' % self.id())
consumer = AIOKafkaConsumer(
self.topic, loop=self.loop, group_id=group,
bootstrap_servers=self.hosts,
enable_auto_commit=enable_auto_commit,
auto_offset_reset=auto_offset_reset,
**kwargs)
yield from consumer.start()
if group is not None:
yield from consumer.seek_to_committed()
return consumer
def consumer_factory(self, **kwargs):
enable_auto_commit = kwargs.pop('enable_auto_commit', True)
auto_offset_reset = kwargs.pop('auto_offset_reset', 'earliest')
group = kwargs.pop('group', 'group-%s' % self.id())
consumer = AIOKafkaConsumer(
self.topic, loop=self.loop, group_id=group,
bootstrap_servers=self.hosts,
enable_auto_commit=enable_auto_commit,
auto_offset_reset=auto_offset_reset,
**kwargs)
yield from consumer.start()
if group is not None:
yield from consumer.seek_to_committed()
return consumer
def test_offset_reset_manual(self):
yield from self.send_messages(0, list(range(0, 10)))
consumer = AIOKafkaConsumer(
self.topic,
loop=self.loop, bootstrap_servers=self.hosts,
metadata_max_age_ms=200, group_id="offset_reset_group",
auto_offset_reset="none")
yield from consumer.start()
self.add_cleanup(consumer.stop)
with self.assertRaises(OffsetOutOfRangeError):
yield from consumer.getmany(timeout_ms=1000)
with self.assertRaises(OffsetOutOfRangeError):
yield from consumer.getone()
def test_consumer_seek_on_unassigned(self):
tp0 = TopicPartition(self.topic, 0)
tp1 = TopicPartition(self.topic, 1)
consumer = AIOKafkaConsumer(loop=self.loop,
group_id=None,
bootstrap_servers=self.hosts)
yield from consumer.start()
self.add_cleanup(consumer.stop)
consumer.assign([tp0])
with self.assertRaises(IllegalStateError):
yield from consumer.seek_to_beginning(tp1)
with self.assertRaises(IllegalStateError):
yield from consumer.seek_to_committed(tp1)
with self.assertRaises(IllegalStateError):
yield from consumer.seek_to_end(tp1)
def test_manual_subscribe_nogroup(self):
msgs1 = yield from self.send_messages(0, range(0, 10))
msgs2 = yield from self.send_messages(1, range(10, 20))
available_msgs = msgs1 + msgs2
consumer = AIOKafkaConsumer(
loop=self.loop, group_id=None,
bootstrap_servers=self.hosts, auto_offset_reset='earliest',
enable_auto_commit=False)
consumer.subscribe(topics=(self.topic,))
yield from consumer.start()
result = []
for i in range(20):
msg = yield from consumer.getone()
result.append(msg.value)
self.assertEqual(set(available_msgs), set(result))
yield from consumer.stop()
def test_manual_subscribe_nogroup(self):
msgs1 = yield from self.send_messages(0, range(0, 10))
msgs2 = yield from self.send_messages(1, range(10, 20))
available_msgs = msgs1 + msgs2
consumer = AIOKafkaConsumer(
loop=self.loop, group_id=None,
bootstrap_servers=self.hosts, auto_offset_reset='earliest',
enable_auto_commit=False)
consumer.subscribe(topics=(self.topic,))
yield from consumer.start()
result = []
for i in range(20):
msg = yield from consumer.getone()
result.append(msg.value)
self.assertEqual(set(available_msgs), set(result))
yield from consumer.stop()
def test_consumer_subscribe_pattern_autocreate_no_group_id(self):
pattern = "^no-group-pattern-.*$"
consumer = AIOKafkaConsumer(loop=self.loop,
bootstrap_servers=self.hosts,
metadata_max_age_ms=200,
group_id=None,
fetch_max_wait_ms=50,
auto_offset_reset="earliest")
self.add_cleanup(consumer.stop)
yield from consumer.start()
consumer.subscribe(pattern=pattern)
# Start getter for the topics. Should not create any topics
consume_task = self.loop.create_task(consumer.getone())
yield from asyncio.sleep(0.3, loop=self.loop)
self.assertFalse(consume_task.done())
self.assertEqual(consumer.subscription(), set())
# Now lets autocreate the topic by fetching metadata for it.
producer = AIOKafkaProducer(loop=self.loop,
bootstrap_servers=self.hosts)
self.add_cleanup(producer.stop)
yield from producer.start()
my_topic = "no-group-pattern-1"
yield from producer.client._wait_on_metadata(my_topic)
# Wait for consumer to refresh metadata with new topic
yield from asyncio.sleep(0.3, loop=self.loop)
self.assertFalse(consume_task.done())
self.assertTrue(consumer._client.cluster.topics() >= {my_topic})
self.assertEqual(consumer.subscription(), {my_topic})
# Add another topic
my_topic2 = "no-group-pattern-2"
yield from producer.client._wait_on_metadata(my_topic2)
# Wait for consumer to refresh metadata with new topic
yield from asyncio.sleep(0.3, loop=self.loop)
self.assertFalse(consume_task.done())
self.assertTrue(
consumer._client.cluster.topics() >= {my_topic, my_topic2})
self.assertEqual(consumer.subscription(), {my_topic, my_topic2})
# Now lets actualy produce some data and verify that it is consumed
yield from producer.send(my_topic, b'test msg')
data = yield from consume_task
self.assertEqual(data.value, b'test msg')
def test_consumer_wait_topic(self):
topic = "some-test-topic-for-autocreate"
consumer = AIOKafkaConsumer(
topic, loop=self.loop, bootstrap_servers=self.hosts)
yield from consumer.start()
consume_task = self.loop.create_task(consumer.getone())
# just to be sure getone does not fail (before produce)
yield from asyncio.sleep(0.5, loop=self.loop)
self.assertFalse(consume_task.done())
producer = AIOKafkaProducer(
loop=self.loop, bootstrap_servers=self.hosts)
yield from producer.start()
yield from producer.send(topic, b'test msg')
yield from producer.stop()
data = yield from consume_task
self.assertEqual(data.value, b'test msg')
yield from consumer.stop()
def test_ssl_consume(self):
# Produce by PLAINTEXT, Consume by SSL
# Send 3 messages
yield from self.send_messages(0, [1, 2, 3])
context = self.create_ssl_context()
group = "group-{}".format(self.id())
consumer = AIOKafkaConsumer(
self.topic, loop=self.loop, group_id=group,
bootstrap_servers=[
"{}:{}".format(self.kafka_host, self.kafka_ssl_port)],
enable_auto_commit=True,
auto_offset_reset="earliest",
security_protocol="SSL", ssl_context=context)
yield from consumer.start()
results = yield from consumer.getmany(timeout_ms=1000)
[msgs] = results.values() # only 1 partition anyway
msgs = [msg.value for msg in msgs]
self.assertEqual(msgs, [b"1", b"2", b"3"])
yield from consumer.stop()
def test_producer_indempotence_no_duplicates(self):
# Indempotent producer should retry produce in case of timeout error
producer = AIOKafkaProducer(
loop=self.loop, bootstrap_servers=self.hosts,
enable_idempotence=True,
request_timeout_ms=2000)
yield from producer.start()
self.add_cleanup(producer.stop)
original_send = producer.client.send
retry = [0]
@asyncio.coroutine
def mocked_send(*args, **kw):
result = yield from original_send(*args, **kw)
if result.API_KEY == ProduceResponse[0].API_KEY and retry[0] < 2:
retry[0] += 1
raise RequestTimedOutError
return result
with mock.patch.object(producer.client, 'send') as mocked:
mocked.side_effect = mocked_send
meta = yield from producer.send_and_wait(
self.topic, b'hello, Kafka!')
consumer = AIOKafkaConsumer(
self.topic, loop=self.loop,
bootstrap_servers=self.hosts,
auto_offset_reset="earliest")
yield from consumer.start()
self.add_cleanup(consumer.stop)
msg = yield from consumer.getone()
self.assertEqual(msg.offset, meta.offset)
self.assertEqual(msg.timestamp, meta.timestamp)
self.assertEqual(msg.value, b"hello, Kafka!")
self.assertEqual(msg.key, None)
with self.assertRaises(asyncio.TimeoutError):
yield from asyncio.wait_for(consumer.getone(), timeout=0.5)
def test_producer_indempotence_no_duplicates(self):
# Indempotent producer should retry produce in case of timeout error
producer = AIOKafkaProducer(
loop=self.loop, bootstrap_servers=self.hosts,
enable_idempotence=True,
request_timeout_ms=2000)
yield from producer.start()
self.add_cleanup(producer.stop)
original_send = producer.client.send
retry = [0]
@asyncio.coroutine
def mocked_send(*args, **kw):
result = yield from original_send(*args, **kw)
if result.API_KEY == ProduceResponse[0].API_KEY and retry[0] < 2:
retry[0] += 1
raise RequestTimedOutError
return result
with mock.patch.object(producer.client, 'send') as mocked:
mocked.side_effect = mocked_send
meta = yield from producer.send_and_wait(
self.topic, b'hello, Kafka!')
consumer = AIOKafkaConsumer(
self.topic, loop=self.loop,
bootstrap_servers=self.hosts,
auto_offset_reset="earliest")
yield from consumer.start()
self.add_cleanup(consumer.stop)
msg = yield from consumer.getone()
self.assertEqual(msg.offset, meta.offset)
self.assertEqual(msg.timestamp, meta.timestamp)
self.assertEqual(msg.value, b"hello, Kafka!")
self.assertEqual(msg.key, None)
with self.assertRaises(asyncio.TimeoutError):
yield from asyncio.wait_for(consumer.getone(), timeout=0.5)
def test_producer_ssl(self):
# Produce by SSL consume by PLAINTEXT
topic = "test_ssl_produce"
context = self.create_ssl_context()
producer = AIOKafkaProducer(
loop=self.loop,
bootstrap_servers=[
"{}:{}".format(self.kafka_host, self.kafka_ssl_port)],
security_protocol="SSL", ssl_context=context)
yield from producer.start()
yield from producer.send_and_wait(topic=topic, value=b"Super msg")
yield from producer.stop()
consumer = AIOKafkaConsumer(
topic, loop=self.loop,
bootstrap_servers=self.hosts,
enable_auto_commit=True,
auto_offset_reset="earliest")
yield from consumer.start()
msg = yield from consumer.getone()
self.assertEqual(msg.value, b"Super msg")
yield from consumer.stop()
def test_producer_ssl(self):
# Produce by SSL consume by PLAINTEXT
topic = "test_ssl_produce"
context = self.create_ssl_context()
producer = AIOKafkaProducer(
loop=self.loop,
bootstrap_servers=[
"{}:{}".format(self.kafka_host, self.kafka_ssl_port)],
security_protocol="SSL", ssl_context=context)
yield from producer.start()
yield from producer.send_and_wait(topic=topic, value=b"Super msg")
yield from producer.stop()
consumer = AIOKafkaConsumer(
topic, loop=self.loop,
bootstrap_servers=self.hosts,
enable_auto_commit=True,
auto_offset_reset="earliest")
yield from consumer.start()
msg = yield from consumer.getone()
self.assertEqual(msg.value, b"Super msg")
yield from consumer.stop()
def test_exclude_internal_topics(self):
# Create random topic
my_topic = "some_noninternal_topic"
client = AIOKafkaClient(
loop=self.loop, bootstrap_servers=self.hosts,
client_id="test_autocreate")
yield from client.bootstrap()
yield from client._wait_on_metadata(my_topic)
yield from client.close()
# Check if only it will be subscribed
pattern = "^.*$"
consumer = AIOKafkaConsumer(
loop=self.loop, bootstrap_servers=self.hosts,
metadata_max_age_ms=200, group_id="some_group_1",
auto_offset_reset="earliest",
exclude_internal_topics=False)
consumer.subscribe(pattern=pattern)
yield from consumer.start()
self.assertIn("__consumer_offsets", consumer.subscription())
yield from consumer._client.force_metadata_update()
self.assertIn("__consumer_offsets", consumer.subscription())
yield from consumer.stop()
def test_producer_indempotence_simple(self):
# The test here will just check if we can do simple produce with
# enable_idempotence option, as no specific API changes is expected.
producer = AIOKafkaProducer(
loop=self.loop, bootstrap_servers=self.hosts,
enable_idempotence=True)
yield from producer.start()
self.add_cleanup(producer.stop)
meta = yield from producer.send_and_wait(self.topic, b'hello, Kafka!')
consumer = AIOKafkaConsumer(
self.topic, loop=self.loop,
bootstrap_servers=self.hosts,
auto_offset_reset="earliest")
yield from consumer.start()
self.add_cleanup(consumer.stop)
msg = yield from consumer.getone()
self.assertEqual(msg.offset, meta.offset)
self.assertEqual(msg.timestamp, meta.timestamp)
self.assertEqual(msg.value, b"hello, Kafka!")
self.assertEqual(msg.key, None)
def test_producer_indempotence_simple(self):
# The test here will just check if we can do simple produce with
# enable_idempotence option, as no specific API changes is expected.
producer = AIOKafkaProducer(
loop=self.loop, bootstrap_servers=self.hosts,
enable_idempotence=True)
yield from producer.start()
self.add_cleanup(producer.stop)
meta = yield from producer.send_and_wait(self.topic, b'hello, Kafka!')
consumer = AIOKafkaConsumer(
self.topic, loop=self.loop,
bootstrap_servers=self.hosts,
auto_offset_reset="earliest")
yield from consumer.start()
self.add_cleanup(consumer.stop)
msg = yield from consumer.getone()
self.assertEqual(msg.offset, meta.offset)
self.assertEqual(msg.timestamp, meta.timestamp)
self.assertEqual(msg.value, b"hello, Kafka!")
self.assertEqual(msg.key, None)
def test_producer_leader_change_preserves_order(self):
# Before 0.5.0 we did not lock partition until a response came from
# the server, but locked the node itself.
# For example: Say the sender sent a request to node 1 and before an
# failure answer came we updated metadata and leader become node 0.
# This way we may send the next batch to node 0 without waiting for
# node 1 batch to be reenqueued, resulting in out-of-order batches
producer = AIOKafkaProducer(
loop=self.loop, bootstrap_servers=self.hosts, linger_ms=1000)
yield from producer.start()
self.add_cleanup(producer.stop)
# Alter metadata to convince the producer, that leader or partition 0
# is a different node
yield from producer.partitions_for(self.topic)
topic_meta = producer._metadata._partitions[self.topic]
real_leader = topic_meta[0].leader
topic_meta[0] = topic_meta[0]._replace(leader=real_leader + 1)
# Make sure the first request for produce takes more time
original_send = producer.client.send
@asyncio.coroutine
def mocked_send(node_id, request, *args, **kw):
if node_id != real_leader and \
request.API_KEY == ProduceResponse[0].API_KEY:
yield from asyncio.sleep(2, loop=self.loop)
result = yield from original_send(node_id, request, *args, **kw)
return result
producer.client.send = mocked_send
# Send Batch 1. This will end up waiting for some time on fake leader
batch = producer.create_batch()
meta = batch.append(key=b"key", value=b"1", timestamp=None)
batch.close()
fut = yield from producer.send_batch(
batch, self.topic, partition=0)
# Make sure we sent the request
yield from asyncio.sleep(0.1, loop=self.loop)
# Update metadata to return leader to real one
yield from producer.client.force_metadata_update()
# Send Batch 2, that if it's bugged will go straight to the real node
batch2 = producer.create_batch()
meta2 = batch2.append(key=b"key", value=b"2", timestamp=None)
batch2.close()
fut2 = yield from producer.send_batch(
batch2, self.topic, partition=0)
batch_meta = yield from fut
batch_meta2 = yield from fut2
# Check the order of messages
consumer = AIOKafkaConsumer(
self.topic, loop=self.loop,
bootstrap_servers=self.hosts,
auto_offset_reset="earliest")
yield from consumer.start()
self.add_cleanup(consumer.stop)
msg = yield from consumer.getone()
self.assertEqual(msg.offset, batch_meta.offset)
self.assertEqual(msg.timestamp or -1, meta.timestamp)
self.assertEqual(msg.value, b"1")
self.assertEqual(msg.key, b"key")
msg2 = yield from consumer.getone()
self.assertEqual(msg2.offset, batch_meta2.offset)
self.assertEqual(msg2.timestamp or -1, meta2.timestamp)
self.assertEqual(msg2.value, b"2")
self.assertEqual(msg2.key, b"key")
def test_rebalance_listener_with_coroutines(self):
yield from self.send_messages(0, list(range(0, 10)))
yield from self.send_messages(1, list(range(10, 20)))
main_self = self
class SimpleRebalanceListener(ConsumerRebalanceListener):
def __init__(self, consumer):
self.consumer = consumer
self.revoke_mock = mock.Mock()
self.assign_mock = mock.Mock()
@asyncio.coroutine
def on_partitions_revoked(self, revoked):
self.revoke_mock(revoked)
# If this commit would fail we will end up with wrong msgs
# eturned in test below
yield from self.consumer.commit()
# Confirm that coordinator is actually waiting for callback to
# complete
yield from asyncio.sleep(0.2, loop=main_self.loop)
main_self.assertTrue(
self.consumer._coordinator.needs_join_prepare)
@asyncio.coroutine
def on_partitions_assigned(self, assigned):
self.assign_mock(assigned)
# Confirm that coordinator is actually waiting for callback to
# complete
yield from asyncio.sleep(0.2, loop=main_self.loop)
main_self.assertFalse(
self.consumer._coordinator.needs_join_prepare)
tp0 = TopicPartition(self.topic, 0)
tp1 = TopicPartition(self.topic, 1)
consumer1 = AIOKafkaConsumer(
loop=self.loop,
group_id="test_rebalance_listener_with_coroutines",
bootstrap_servers=self.hosts,
enable_auto_commit=False,
auto_offset_reset="earliest")
listener1 = SimpleRebalanceListener(consumer1)
consumer1.subscribe([self.topic], listener=listener1)
yield from consumer1.start()
self.add_cleanup(consumer1.stop)
msg = yield from consumer1.getone(tp0)
self.assertEqual(msg.value, b"0")
msg = yield from consumer1.getone(tp1)
self.assertEqual(msg.value, b"10")
listener1.revoke_mock.assert_called_with(set([]))
listener1.assign_mock.assert_called_with(set([tp0, tp1]))
# By adding a 2nd consumer we trigger rebalance
consumer2 = AIOKafkaConsumer(
loop=self.loop,
group_id="test_rebalance_listener_with_coroutines",
bootstrap_servers=self.hosts,
enable_auto_commit=False,
auto_offset_reset="earliest")
listener2 = SimpleRebalanceListener(consumer2)
consumer2.subscribe([self.topic], listener=listener2)
yield from consumer2.start()
self.add_cleanup(consumer2.stop)
msg1 = yield from consumer1.getone()
msg2 = yield from consumer2.getone()
# We can't predict the assignment in test
if consumer1.assignment() == set([tp1]):
msg1, msg2 = msg2, msg1
c1_assignment = set([tp1])
c2_assignment = set([tp0])
else:
c1_assignment = set([tp0])
c2_assignment = set([tp1])
self.assertEqual(msg1.value, b"1")
self.assertEqual(msg2.value, b"11")
listener1.revoke_mock.assert_called_with(set([tp0, tp1]))
self.assertEqual(listener1.revoke_mock.call_count, 2)
listener1.assign_mock.assert_called_with(c1_assignment)
self.assertEqual(listener1.assign_mock.call_count, 2)
listener2.revoke_mock.assert_called_with(set([]))
self.assertEqual(listener2.revoke_mock.call_count, 1)
listener2.assign_mock.assert_called_with(c2_assignment)
self.assertEqual(listener2.assign_mock.call_count, 1)
def test_producer_leader_change_preserves_order(self):
# Before 0.5.0 we did not lock partition until a response came from
# the server, but locked the node itself.
# For example: Say the sender sent a request to node 1 and before an
# failure answer came we updated metadata and leader become node 0.
# This way we may send the next batch to node 0 without waiting for
# node 1 batch to be reenqueued, resulting in out-of-order batches
producer = AIOKafkaProducer(loop=self.loop,
bootstrap_servers=self.hosts,
linger_ms=1000)
yield from producer.start()
self.add_cleanup(producer.stop)
# Alter metadata to convince the producer, that leader or partition 0
# is a different node
yield from producer.partitions_for(self.topic)
topic_meta = producer._metadata._partitions[self.topic]
real_leader = topic_meta[0].leader
topic_meta[0] = topic_meta[0]._replace(leader=real_leader + 1)
# Make sure the first request for produce takes more time
original_send = producer.client.send
@asyncio.coroutine
def mocked_send(node_id, request, *args, **kw):
if node_id != real_leader and \
request.API_KEY == ProduceResponse[0].API_KEY:
yield from asyncio.sleep(2, loop=self.loop)
result = yield from original_send(node_id, request, *args, **kw)
return result
producer.client.send = mocked_send
# Send Batch 1. This will end up waiting for some time on fake leader
batch = producer.create_batch()
meta = batch.append(key=b"key", value=b"1", timestamp=None)
batch.close()
fut = yield from producer.send_batch(batch, self.topic, partition=0)
# Make sure we sent the request
yield from asyncio.sleep(0.1, loop=self.loop)
# Update metadata to return leader to real one
yield from producer.client.force_metadata_update()
# Send Batch 2, that if it's bugged will go straight to the real node
batch2 = producer.create_batch()
meta2 = batch2.append(key=b"key", value=b"2", timestamp=None)
batch2.close()
fut2 = yield from producer.send_batch(batch2, self.topic, partition=0)
batch_meta = yield from fut
batch_meta2 = yield from fut2
# Check the order of messages
consumer = AIOKafkaConsumer(self.topic,
loop=self.loop,
bootstrap_servers=self.hosts,
auto_offset_reset="earliest")
yield from consumer.start()
self.add_cleanup(consumer.stop)
msg = yield from consumer.getone()
self.assertEqual(msg.offset, batch_meta.offset)
self.assertEqual(msg.timestamp or -1, meta.timestamp)
self.assertEqual(msg.value, b"1")
self.assertEqual(msg.key, b"key")
msg2 = yield from consumer.getone()
self.assertEqual(msg2.offset, batch_meta2.offset)
self.assertEqual(msg2.timestamp or -1, meta2.timestamp)
self.assertEqual(msg2.value, b"2")
self.assertEqual(msg2.key, b"key")
def test_consumer_rebalance_on_new_topic(self):
# Test will create a consumer group and check if adding new topic
# will trigger a group rebalance and assign partitions
pattern = "^another-autocreate-pattern-.*$"
client = AIOKafkaClient(
loop=self.loop, bootstrap_servers=self.hosts,
client_id="test_autocreate")
yield from client.bootstrap()
listener1 = StubRebalanceListener(loop=self.loop)
listener2 = StubRebalanceListener(loop=self.loop)
consumer1 = AIOKafkaConsumer(
loop=self.loop, bootstrap_servers=self.hosts,
metadata_max_age_ms=200, group_id="test-autocreate-rebalance",
heartbeat_interval_ms=100)
consumer1.subscribe(pattern=pattern, listener=listener1)
yield from consumer1.start()
consumer2 = AIOKafkaConsumer(
loop=self.loop, bootstrap_servers=self.hosts,
metadata_max_age_ms=200, group_id="test-autocreate-rebalance",
heartbeat_interval_ms=100)
consumer2.subscribe(pattern=pattern, listener=listener2)
yield from consumer2.start()
yield from asyncio.sleep(0.5, loop=self.loop)
# bootstrap will take care of the initial group assignment
self.assertEqual(consumer1.assignment(), set())
self.assertEqual(consumer2.assignment(), set())
listener1.reset()
listener2.reset()
# Lets force autocreation of a topic
my_topic = "another-autocreate-pattern-1"
yield from client._wait_on_metadata(my_topic)
# Wait for group to stabilize
assign1 = yield from listener1.wait_assign()
assign2 = yield from listener2.wait_assign()
# We expect 2 partitons for autocreated topics
my_partitions = set([
TopicPartition(my_topic, 0), TopicPartition(my_topic, 1)])
self.assertEqual(assign1 | assign2, my_partitions)
self.assertEqual(
consumer1.assignment() | consumer2.assignment(),
my_partitions)
# Lets add another topic
listener1.reset()
listener2.reset()
my_topic2 = "another-autocreate-pattern-2"
yield from client._wait_on_metadata(my_topic2)
# Wait for group to stabilize
assign1 = yield from listener1.wait_assign()
assign2 = yield from listener2.wait_assign()
# We expect 2 partitons for autocreated topics
my_partitions = set([
TopicPartition(my_topic, 0), TopicPartition(my_topic, 1),
TopicPartition(my_topic2, 0), TopicPartition(my_topic2, 1)])
self.assertEqual(assign1 | assign2, my_partitions)
self.assertEqual(
consumer1.assignment() | consumer2.assignment(),
my_partitions)
yield from consumer1.stop()
yield from consumer2.stop()
yield from client.close()