def test_checkpoint_with_multiple_topics(self):
feed = KafkaChangeFeed(topics=[topics.FORM, topics.CASE], group_id='test-kafka-feed')
pillow_name = 'test-multi-topic-checkpoints'
checkpoint = PillowCheckpoint(pillow_name, feed.sequence_format)
processor = CountingProcessor()
pillow = ConstructedPillow(
name=pillow_name,
checkpoint=checkpoint,
change_feed=feed,
processor=processor,
change_processed_event_handler=KafkaCheckpointEventHandler(
checkpoint=checkpoint, checkpoint_frequency=1, change_feed=feed
)
)
offsets = feed.get_latest_offsets()
self.assertEqual(set([(topics.FORM, 0), (topics.CASE, 0)]), set(offsets.keys()))
# send a few changes to kafka so they should be picked up by the pillow
publish_stub_change(topics.FORM)
publish_stub_change(topics.FORM)
publish_stub_change(topics.CASE)
publish_stub_change(topics.CASE)
publish_stub_change(topics.CASE_SQL)
pillow.process_changes(since=offsets, forever=False)
self.assertEqual(4, processor.count)
self.assertEqual(feed.get_current_checkpoint_offsets(), pillow.get_last_checkpoint_sequence())
publish_stub_change(topics.FORM)
publish_stub_change(topics.FORM)
publish_stub_change(topics.CASE)
publish_stub_change(topics.CASE)
publish_stub_change(topics.CASE_SQL)
pillow.process_changes(pillow.get_last_checkpoint_sequence(), forever=False)
self.assertEqual(8, processor.count)
self.assertEqual(feed.get_current_checkpoint_offsets(), pillow.get_last_checkpoint_sequence())
def test_dont_create_checkpoint_past_current(self):
pillow_name = 'test-checkpoint-reset'
# initialize change feed and pillow
feed = KafkaChangeFeed(topics=topics.USER_TOPICS, group_id='test-kafka-feed')
checkpoint = PillowCheckpoint(pillow_name, feed.sequence_format)
processor = CountingProcessor()
pillow = ConstructedPillow(
name=pillow_name,
checkpoint=checkpoint,
change_feed=feed,
processor=processor,
change_processed_event_handler=KafkaCheckpointEventHandler(
checkpoint=checkpoint, checkpoint_frequency=1, change_feed=feed
)
)
original_kafka_offsets = feed.get_latest_offsets()
current_kafka_offsets = deepcopy(original_kafka_offsets)
self.assertEqual(feed.get_current_checkpoint_offsets(), {})
self.assertEqual(pillow.get_last_checkpoint_sequence(), {})
publish_stub_change(topics.COMMCARE_USER)
# the following line causes tests to fail if you have multiple partitions
current_kafka_offsets[(topics.COMMCARE_USER, 0)] += 1
pillow.process_changes(since=original_kafka_offsets, forever=False)
self.assertEqual(1, processor.count)
self.assertEqual(feed.get_current_checkpoint_offsets(), current_kafka_offsets)
def setUp(self):
self.processor = CountingProcessor()
self.pillow = ConstructedPillow(
name='test-kafka-case-feed',
checkpoint=None,
change_feed=KafkaChangeFeed(topics=[topics.CASE, topics.CASE_SQL],
client_id='test-kafka-case-feed'),
processor=self.processor)
self.original_process_change = self.pillow.process_change