class InMemoryCheckpointStore(CheckpointStore):
def __init__(self):
self._checkpoint_store_impl = CheckPointStoreImpl()
async def list_ownership(self, fully_qualified_namespace: str,
eventhub_name: str, consumer_group: str,
**kwargs: Any) -> Iterable[Dict[str, Any]]:
return self._checkpoint_store_impl.list_ownership(
fully_qualified_namespace, eventhub_name, consumer_group)
async def claim_ownership(self, ownership_list: Iterable[Dict[str, Any]],
**kwargs: Any) -> Iterable[Dict[str, Any]]:
return self._checkpoint_store_impl.claim_ownership(ownership_list)
async def update_checkpoint(self, checkpoint: Dict[str,
Optional[Union[str,
int]]],
**kwargs: Any) -> None:
self._checkpoint_store_impl.update_checkpoint(checkpoint)
async def list_checkpoints(self, fully_qualified_namespace: str,
eventhub_name: str, consumer_group: str,
**kwargs: Any) -> Iterable[Dict[str, Any]]:
return self._checkpoint_store_impl.list_checkpoints(
fully_qualified_namespace, eventhub_name, consumer_group)
def test_receive_load_balancing(connstr_senders):
if sys.platform.startswith('darwin'):
pytest.skip("Skipping on OSX - test code using multiple threads. Sometimes OSX aborts python process")
connection_str, senders = connstr_senders
cs = InMemoryCheckpointStore()
client1 = EventHubConsumerClient.from_connection_string(
connection_str, consumer_group='$default', checkpoint_store=cs, load_balancing_interval=1)
client2 = EventHubConsumerClient.from_connection_string(
connection_str, consumer_group='$default', checkpoint_store=cs, load_balancing_interval=1)
def on_event(partition_context, event):
pass
with client1, client2:
worker1 = threading.Thread(target=client1.receive,
args=(on_event,),
kwargs={"starting_position": "-1"})
worker2 = threading.Thread(target=client2.receive,
args=(on_event,),
kwargs={"starting_position": "-1"})
worker1.start()
time.sleep(3.3)
worker2.start()
time.sleep(20)
assert len(client1._event_processors[("$default", ALL_PARTITIONS)]._consumers) == 1
assert len(client2._event_processors[("$default", ALL_PARTITIONS)]._consumers) == 1
def test_partition_processor_process_eventhub_consumer_error():
assert_result = {}
def event_handler(partition_context, events):
pass
def error_handler(partition_context, error):
assert_result["error"] = error
def partition_close_handler(partition_context, reason):
assert_result["reason"] = CloseReason.OWNERSHIP_LOST
class MockEventHubClient(object):
eventhub_name = "test_eventhub_name"
def __init__(self):
self._address = _Address(hostname="test",
path=MockEventHubClient.eventhub_name)
def _create_consumer(self, consumer_group, partition_id,
event_position, on_event_received, **kwargs):
return MockEventhubConsumer(on_event_received=on_event_received,
**kwargs)
def get_partition_ids(self):
return ["0", "1"]
class MockEventhubConsumer(object):
def __init__(self, **kwargs):
self.stop = False
self._on_event_received = kwargs.get("on_event_received")
def receive(self, *args, **kwargs):
time.sleep(0.5)
raise EventHubError("Mock EventHubConsumer EventHubError")
def close(self):
pass
eventhub_client = MockEventHubClient()
checkpoint_store = InMemoryCheckpointStore()
event_processor = EventProcessor(
eventhub_client=eventhub_client,
consumer_group='$default',
checkpoint_store=checkpoint_store,
on_event=event_handler,
on_error=error_handler,
on_partition_close=partition_close_handler,
load_balancing_interval=1)
thread = threading.Thread(target=event_processor.start)
thread.start()
time.sleep(2)
event_processor.stop()
thread.join()
assert isinstance(assert_result["error"], EventHubError)
assert assert_result["reason"] == CloseReason.OWNERSHIP_LOST
def test_partition_processor_process_error_close_error():
def partition_initialize_handler(partition_context):
partition_initialize_handler.called = True
raise RuntimeError("initialize error")
def event_handler(partition_context, event):
event_handler.called = True
raise RuntimeError("process_events error")
def error_handler(partition_context, error):
assert isinstance(error, RuntimeError)
error_handler.called = True
raise RuntimeError("process_error error")
def partition_close_handler(partition_context, reason):
assert reason == CloseReason.OWNERSHIP_LOST
partition_close_handler.called = True
raise RuntimeError("close error")
class MockEventHubClient(object):
eventhub_name = "test_eventhub_name"
def __init__(self):
self._address = _Address(hostname="test",
path=MockEventHubClient.eventhub_name)
def _create_consumer(self, consumer_group, partition_id,
event_position, on_event_received, **kwargs):
return MockEventhubConsumer(on_event_received=on_event_received,
**kwargs)
def get_partition_ids(self):
return ["0", "1"]
class MockEventhubConsumer(object):
def __init__(self, **kwargs):
self.stop = False
self._on_event_received = kwargs.get("on_event_received")
def receive(self, *args, **kwargs):
time.sleep(0.5)
self._on_event_received(EventData("test data"))
def close(self):
pass
class MockOwnershipManager(OwnershipManager):
called = False
def release_ownership(self, partition_id):
self.called = True
eventhub_client = MockEventHubClient(
) # EventHubClient.from_connection_string(connection_str, receive_timeout=3)
checkpoint_store = InMemoryCheckpointStore()
ownership_manager = MockOwnershipManager(eventhub_client, "$Default",
"owner", checkpoint_store, 10.0,
"0")
event_processor = EventProcessor(
eventhub_client=eventhub_client,
consumer_group='$default',
checkpoint_store=checkpoint_store,
on_event=event_handler,
on_error=error_handler,
on_partition_initialize=partition_initialize_handler,
on_partition_close=partition_close_handler,
load_balancing_interval=1)
event_processor._ownership_manager = ownership_manager
thread = threading.Thread(target=event_processor.start)
thread.start()
time.sleep(2)
event_processor.stop()
thread.join()
assert partition_initialize_handler.called
assert event_handler.called
assert error_handler.called
assert partition_close_handler.called
assert ownership_manager.called
def test_loadbalancer_balance():
class MockEventHubClient(object):
eventhub_name = "test_eventhub_name"
def __init__(self):
self._address = _Address(hostname="test",
path=MockEventHubClient.eventhub_name)
def _create_consumer(self, consumer_group, partition_id,
event_position, on_event_received, **kwargs):
consumer = MockEventhubConsumer(
on_event_received=on_event_received, **kwargs)
return consumer
def get_partition_ids(self):
return ["0", "1"]
class MockEventhubConsumer(object):
def __init__(self, **kwargs):
self.stop = False
self._on_event_received = kwargs.get("on_event_received")
def receive(self, *args, **kwargs):
time.sleep(0.1)
self._on_event_received(EventData(""))
def close(self):
pass
eventhub_client = MockEventHubClient()
checkpoint_store = InMemoryCheckpointStore()
threads = []
event_processor1 = EventProcessor(eventhub_client=eventhub_client,
consumer_group='$default',
checkpoint_store=checkpoint_store,
on_event=event_handler,
load_balancing_interval=0.3)
thread1 = threading.Thread(target=event_processor1.start)
thread1.start()
threads.append(thread1)
time.sleep(2)
ep1_after_start = len(event_processor1._consumers)
event_processor2 = EventProcessor(eventhub_client=eventhub_client,
consumer_group='$default',
checkpoint_store=checkpoint_store,
on_event=event_handler,
load_balancing_interval=0.3)
thread2 = threading.Thread(target=event_processor2.start)
thread2.start()
threads.append(thread2)
time.sleep(3)
ep2_after_start = len(event_processor2._consumers)
event_processor1.stop()
thread1.join()
time.sleep(3)
ep2_after_ep1_stopped = len(event_processor2._consumers)
event_processor2.stop()
thread2.join()
assert ep1_after_start == 2
assert ep2_after_start == 1
assert ep2_after_ep1_stopped == 2
def test_partition_processor():
assert_map = {}
event_map = {}
def partition_initialize_handler(partition_context):
assert partition_context
assert_map["initialize"] = "called"
def event_handler(partition_context, event):
event_map[partition_context.partition_id] = event_map.get(
partition_context.partition_id, 0) + 1
partition_context.update_checkpoint(event)
assert_map["checkpoint"] = "checkpoint called"
def partition_close_handler(partition_context, reason):
assert_map["close_reason"] = reason
def error_handler(partition_context, err):
assert_map["error"] = err
class MockEventHubClient(object):
eventhub_name = "test_eventhub_name"
def __init__(self):
self._address = _Address(hostname="test",
path=MockEventHubClient.eventhub_name)
def _create_consumer(self, consumer_group, partition_id,
event_position, on_event_received, **kwargs):
return MockEventhubConsumer(on_event_received=on_event_received,
**kwargs)
def get_partition_ids(self):
return ["0", "1"]
class MockEventhubConsumer(object):
def __init__(self, **kwargs):
self.stop = False
self._on_event_received = kwargs.get("on_event_received")
def receive(self, *args, **kwargs):
time.sleep(0.5)
self._on_event_received(EventData("test data"))
def close(self):
pass
eventhub_client = MockEventHubClient()
checkpoint_store = InMemoryCheckpointStore()
event_processor = EventProcessor(
eventhub_client=eventhub_client,
consumer_group='$default',
checkpoint_store=checkpoint_store,
on_event=event_handler,
on_error=error_handler,
on_partition_initialize=partition_initialize_handler,
on_partition_close=partition_close_handler,
load_balancing_interval=0.3)
thread = threading.Thread(target=event_processor.start)
thread.start()
time.sleep(2)
ep_partitions = len(event_processor._consumers)
event_processor.stop()
time.sleep(2)
thread.join()
assert ep_partitions == 2
assert assert_map["initialize"] == "called"
assert event_map['0'] >= 1 and event_map['1'] >= 1
assert assert_map["checkpoint"] == "checkpoint called"
assert "error" not in assert_map
assert assert_map["close_reason"] == CloseReason.SHUTDOWN
def __init__(self):
self._checkpoint_store_impl = CheckPointStoreImpl()
