async def test_compacted_topic_consumption(self):
# Compacted topics can have offsets skipped
client = AIOKafkaClient(
loop=self.loop,
bootstrap_servers=[])
client.ready = mock.MagicMock()
client.ready.side_effect = asyncio.coroutine(lambda a: True)
client.force_metadata_update = mock.MagicMock()
client.force_metadata_update.side_effect = asyncio.coroutine(
lambda: False)
client.send = mock.MagicMock()
subscriptions = SubscriptionState(loop=self.loop)
fetcher = Fetcher(client, subscriptions, loop=self.loop)
tp = TopicPartition('test', 0)
req = FetchRequest(
-1, # replica_id
100, 100, [(tp.topic, [(tp.partition, 155, 100000)])])
builder = LegacyRecordBatchBuilder(
magic=1, compression_type=0, batch_size=99999999)
builder.append(160, value=b"12345", key=b"1", timestamp=None)
builder.append(162, value=b"23456", key=b"2", timestamp=None)
builder.append(167, value=b"34567", key=b"3", timestamp=None)
batch = bytes(builder.build())
resp = FetchResponse(
[('test', [(
0, 0, 3000, # partition, error_code, highwater_offset
batch # Batch raw bytes
)])])
subscriptions.assign_from_user({tp})
assignment = subscriptions.subscription.assignment
tp_state = assignment.state_value(tp)
client.send.side_effect = asyncio.coroutine(lambda n, r: resp)
tp_state.seek(155)
fetcher._in_flight.add(0)
needs_wake_up = await fetcher._proc_fetch_request(
assignment, 0, req)
self.assertEqual(needs_wake_up, True)
buf = fetcher._records[tp]
# Test successful getone, the closest in batch offset=160
first = buf.getone()
self.assertEqual(tp_state.position, 161)
self.assertEqual(
(first.value, first.key, first.offset),
(b"12345", b"1", 160))
# Test successful getmany
second, third = buf.getall()
self.assertEqual(tp_state.position, 168)
self.assertEqual(
(second.value, second.key, second.offset),
(b"23456", b"2", 162))
self.assertEqual(
(third.value, third.key, third.offset),
(b"34567", b"3", 167))
async def test_proc_fetch_request(self):
client = AIOKafkaClient(bootstrap_servers=[])
subscriptions = SubscriptionState()
fetcher = Fetcher(client, subscriptions, auto_offset_reset="latest")
tp = TopicPartition('test', 0)
tp_info = (tp.topic, [(tp.partition, 4, 100000)])
req = FetchRequest(
-1, # replica_id
100,
100,
[tp_info])
async def ready(conn):
return True
def force_metadata_update():
fut = create_future()
fut.set_result(False)
return fut
client.ready = mock.MagicMock()
client.ready.side_effect = ready
client.force_metadata_update = mock.MagicMock()
client.force_metadata_update.side_effect = force_metadata_update
client.send = mock.MagicMock()
builder = LegacyRecordBatchBuilder(magic=1,
compression_type=0,
batch_size=99999999)
builder.append(offset=4, value=b"test msg", key=None, timestamp=None)
raw_batch = bytes(builder.build())
fetch_response = FetchResponse([('test', [(0, 0, 9, raw_batch)])])
async def send(node, request):
nonlocal fetch_response
return fetch_response
client.send.side_effect = send
subscriptions.assign_from_user({tp})
assignment = subscriptions.subscription.assignment
tp_state = assignment.state_value(tp)
# The partition has no active position, so will ignore result
needs_wake_up = await fetcher._proc_fetch_request(assignment, 0, req)
self.assertEqual(needs_wake_up, False)
self.assertEqual(fetcher._records, {})
# The partition's position does not match request's fetch offset
subscriptions.seek(tp, 0)
needs_wake_up = await fetcher._proc_fetch_request(assignment, 0, req)
self.assertEqual(needs_wake_up, False)
self.assertEqual(fetcher._records, {})
subscriptions.seek(tp, 4)
needs_wake_up = await fetcher._proc_fetch_request(assignment, 0, req)
self.assertEqual(needs_wake_up, True)
buf = fetcher._records[tp]
self.assertEqual(buf.getone().value, b"test msg")
# If position changed after fetch request passed
subscriptions.seek(tp, 4)
needs_wake_up = await fetcher._proc_fetch_request(assignment, 0, req)
subscriptions.seek(tp, 10)
self.assertIsNone(buf.getone())
# If assignment is lost after fetch request passed
subscriptions.seek(tp, 4)
needs_wake_up = await fetcher._proc_fetch_request(assignment, 0, req)
subscriptions.unsubscribe()
self.assertIsNone(buf.getone())
subscriptions.assign_from_user({tp})
assignment = subscriptions.subscription.assignment
tp_state = assignment.state_value(tp)
# error -> no partition found (UnknownTopicOrPartitionError)
subscriptions.seek(tp, 4)
fetcher._records.clear()
fetch_response = FetchResponse([('test', [(0, 3, 9, raw_batch)])])
cc = client.force_metadata_update.call_count
needs_wake_up = await fetcher._proc_fetch_request(assignment, 0, req)
self.assertEqual(needs_wake_up, False)
self.assertEqual(client.force_metadata_update.call_count, cc + 1)
# error -> topic auth failed (TopicAuthorizationFailedError)
fetch_response = FetchResponse([('test', [(0, 29, 9, raw_batch)])])
needs_wake_up = await fetcher._proc_fetch_request(assignment, 0, req)
self.assertEqual(needs_wake_up, True)
with self.assertRaises(TopicAuthorizationFailedError):
await fetcher.next_record([])
# error -> unknown
fetch_response = FetchResponse([('test', [(0, -1, 9, raw_batch)])])
needs_wake_up = await fetcher._proc_fetch_request(assignment, 0, req)
self.assertEqual(needs_wake_up, False)
# error -> offset out of range with offset strategy
fetch_response = FetchResponse([('test', [(0, 1, 9, raw_batch)])])
needs_wake_up = await fetcher._proc_fetch_request(assignment, 0, req)
self.assertEqual(needs_wake_up, False)
self.assertEqual(tp_state.has_valid_position, False)
self.assertEqual(tp_state.awaiting_reset, True)
self.assertEqual(tp_state.reset_strategy, OffsetResetStrategy.LATEST)
# error -> offset out of range without offset strategy
subscriptions.seek(tp, 4)
fetcher._default_reset_strategy = OffsetResetStrategy.NONE
needs_wake_up = await fetcher._proc_fetch_request(assignment, 0, req)
self.assertEqual(needs_wake_up, True)
with self.assertRaises(OffsetOutOfRangeError):
await fetcher.next_record([])
await fetcher.close()