def test_should_configure_two_services_without_subscribers():
spy = SpyEvents()
def assert_store(event: Event) -> BoolResult:
spy.append(event)
return isSuccess
configurer_service_1 = RabbitMqEventConfigurerMother.with_service(
"service1")
configurer_service_1.configure()
configurer_service_2 = RabbitMqEventConfigurerMother.with_service(
"service2")
configurer_service_2.configure()
event = EventUserCreatedMother.random()
bus = RabbitMqEventBusMother.with_service("service1")
bus.publish(event)
consumer = RabbitMqEventConsumerMother.default()
consumer.add_handler_on_store(assert_store)
consumer.start()
sleep(1.0)
consumer.stop()
configurer_service_1.clear()
configurer_service_2.clear()
spy.assert_number_unique_events(1)
spy.assert_first_event(event)
spy.assert_last_event(event)
spy.assert_count_by_event_id(event.event_id, 1)
def test_should_publish_consume_from_store_queue_from_rabbitmq():
spy = SpyEvents()
def assert_consumer_event_store(event: Event) -> BoolResult:
spy.append(event)
return isSuccess
event = EventUserCreatedMother.random()
configurer = RabbitMqEventConfigurerMother.default()
configurer.configure_event(event)
bus = RabbitMqEventBusMother.default()
bus.publish(event)
consumer = RabbitMqEventConsumerMother.default()
consumer.add_handler_on_store(assert_consumer_event_store)
consumer.start()
sleep(1.0)
consumer.stop()
configurer.clear()
spy.assert_number_unique_events(1)
spy.assert_first_event(event)
spy.assert_count_by_event_id(event.event_id, 1)
def test_should_publish_consume_and_retry_from_store_queue_from_rabbitmq(
max_retries_allowed, expected_number_event_consumed, simulated_results
):
spy = SpyEvents()
def assert_consumer_event_store(event: Event) -> Result[bool, Error]:
spy.append(event)
result = simulated_results.pop(0)
return result
event = EventUserCreatedMother.random()
configurer = RabbitMqEventConfigurerMother.with_retry_ttl_10ms()
configurer.configure_event(event)
bus = RabbitMqEventBusMother.default()
bus.publish(event)
consumer = RabbitMqEventConsumerMother.with_max_retries(max_retries_allowed)
consumer.add_handler_on_store(assert_consumer_event_store)
consumer.start()
sleep(1.0)
consumer.stop()
configurer.clear()
spy.assert_number_unique_events(1)
spy.assert_first_event(event)
spy.assert_count_by_event_id(event.event_id, expected_number_event_consumed)
def test_should_publish_consume_and_retry_event_with_two_handlers_from_rabbitmq_when_fail_consumer(
max_retries_allowed, expected_number_event_consumed,
simulated_results):
spy_consumer_1 = SpyEvents()
spy_consumer_2 = SpyEvents()
simulated_results_1 = copy.deepcopy(simulated_results)
simulated_results_2 = copy.deepcopy(simulated_results)
def assert_consumer_1(event: Event) -> Result[bool, Error]:
spy_consumer_1.append(event)
result = simulated_results_1.pop(0)
return result
def assert_consumer_2(event: Event) -> Result[bool, Error]:
spy_consumer_2.append(event)
result = simulated_results_2.pop(0)
return result
event = EventUserCreatedMother.random()
subscribers = [
EventSubscriber(
event_name=event.event_name,
event_version=event.event_version,
handlers=[assert_consumer_1, assert_consumer_2],
)
]
configurer = RabbitMqEventConfigurerMother.with_retry_ttl_10ms()
configurer.configure_subscribers(subscribers)
bus = RabbitMqEventBusMother.default()
bus.publish(event)
consumer = RabbitMqEventConsumerMother.with_max_retries(
max_retries_allowed)
consumer.add_subscribers(subscribers)
consumer.start()
sleep(1.5)
consumer.stop()
configurer.clear()
print(f"num events: {len(spy_consumer_1.events)} - {spy_consumer_1}")
print(f"num events: {len(spy_consumer_2.events)} - {spy_consumer_2}")
spy_consumer_1.assert_number_unique_events(1)
spy_consumer_1.assert_first_event(event)
spy_consumer_1.assert_count_by_event_id(event.event_id,
expected_number_event_consumed)
spy_consumer_2.assert_number_unique_events(1)
spy_consumer_2.assert_first_event(event)
spy_consumer_2.assert_count_by_event_id(event.event_id,
expected_number_event_consumed)
def test_should_configure_one_services_with_modern_event_management_an_other_with_legacy(
):
spy_legacy = SpyEvents()
spy_modern = SpyEvents()
event = EventUserCreatedMother.random()
def step_1_execute_legacy():
# Define legacy Subscriber
@subscriber_handler(logger=NotImplementedLogger())
def main_handler(event: Event):
spy_legacy.append(event)
return isFailure
subscriber = RabbitMqEventSubscriberMother.default(main_handler)
subscriber.start()
# Define legacy Publisher
legacy_publisher = RabbitMqEventPublisherMother.default()
legacy_publisher.publish(event)
sleep(1.0)
subscriber.stop()
def step_2_execute_modern():
# Define modern Consumer
def modern_handler(event: Event) -> BoolResult:
spy_modern.append(event)
return isSuccess
legacy_queue = RabbitMqQueueNamingMother.legacy_dead_letter_queue()
consumer = RabbitMqEventConsumerMother.default()
consumer.add_handler_on_queue(legacy_queue, modern_handler)
consumer.start()
sleep(1.0)
consumer.stop()
rabbitmq = RabbitMqDeclarerMother.default()
rabbitmq.delete_queue(RabbitMqQueueNamingMother.legacy_dead_letter_queue())
step_1_execute_legacy()
step_2_execute_modern()
spy_legacy.assert_number_unique_events(1)
spy_legacy.assert_first_event(event)
spy_modern.assert_number_unique_events(1)
spy_modern.assert_first_event(event)
spy_modern.assert_count_by_event_id(event.event_id, 1)
rabbitmq.delete_queue(RabbitMqQueueNamingMother.legacy_main_queue())
rabbitmq.delete_queue(RabbitMqQueueNamingMother.legacy_dead_letter_queue())
def test_should_publish_consume_with_event_handler_notify_when_fail_consumer_with_critical_error(
given_any_petisco
):
spy = SpyEvents()
logger = FakeLogger()
notifier = FakeNotifier()
class MyCriticalError(CriticalError):
pass
@event_handler(logger=logger, notifier=notifier)
def assert_consumer(event: Event) -> Result[bool, Error]:
spy.append(event)
return Failure(MyCriticalError(Exception()))
event = EventUserCreatedMother.random()
subscribers = [
EventSubscriber(
event_name=event.event_name,
event_version=event.event_version,
handlers=[assert_consumer],
)
]
configurer = RabbitMqEventConfigurerMother.default()
configurer.configure_subscribers(subscribers)
bus = RabbitMqEventBusMother.default()
bus.publish(event)
consumer = RabbitMqEventConsumerMother.without_retry()
consumer.add_subscribers(subscribers)
consumer.start()
sleep(1.0)
consumer.stop()
configurer.clear()
spy.assert_number_unique_events(1)
spy.assert_first_event(event)
spy.assert_count_by_event_id(event.event_id, 1)
first_logging_message = logger.get_logging_messages()[0]
assert first_logging_message == (
DEBUG,
LogMessageMother.get_event_handler(
operation="assert_consumer",
message={"event": event.event_name, "body": event.to_json()},
).to_dict(),
)
assert notifier.publish_called
assert notifier.publish_times_called == 1
def test_should_publish_consume_and_retry_event_from_rabbitmq_when_a_queue_is_configured_with_specific_parameters(
max_retries_allowed, expected_number_event_consumed, simulated_results
):
spy = SpyEvents()
spy_specific = SpyEvents()
def assert_consumer(event: Event) -> Result[bool, Error]:
spy.append(event)
result = simulated_results.pop(0)
return result
def assert_specific_consumer(event: Event) -> Result[bool, Error]:
spy_specific.append(event)
return isSuccess
event = EventUserCreatedMother.random()
subscribers = [
EventSubscriber(
event_name=event.event_name,
event_version=event.event_version,
handlers=[assert_consumer, assert_specific_consumer],
)
]
specific_queue_config = SpecificQueueConfig(
wildcard="*assert_specific_consumer",
specific_retry_ttl=50,
specific_main_ttl=75,
)
queue_config = QueueConfigMother.with_specific_queue_config(
specific_queue_config, default_retry_ttl=100, default_main_ttl=100
)
configurer = RabbitMqEventConfigurerMother.with_queue_config(queue_config)
configurer.configure_subscribers(subscribers)
bus = RabbitMqEventBusMother.default()
bus.publish(event)
consumer = RabbitMqEventConsumerMother.with_max_retries(max_retries_allowed)
consumer.add_subscribers(subscribers)
consumer.start()
sleep(1.0)
consumer.stop()
configurer.clear()
spy.assert_number_unique_events(1)
spy.assert_first_event(event)
spy.assert_last_event(event)
spy.assert_count_by_event_id(event.event_id, expected_number_event_consumed)
spy_specific.assert_number_unique_events(1)
def test_should_publish_consume_retry_and_send_to_dead_letter_event_from_rabbitmq_when_fail_consumer(
):
max_retries_allowed = 2
expected_number_event_consumed = 3
spy = SpyEvents()
spy_dead_letter = SpyEvents()
def assert_consumer(event: Event) -> Result[bool, Error]:
spy.append(event)
return isFailure
event = EventUserCreatedMother.random()
subscriber = EventSubscriber(
event_name=event.event_name,
event_version=event.event_version,
handlers=[assert_consumer],
)
subscribers = [subscriber]
configurer = RabbitMqEventConfigurerMother.with_retry_ttl_10ms()
configurer.configure_subscribers(subscribers)
bus = RabbitMqEventBusMother.default()
bus.publish(event)
consumer = RabbitMqEventConsumerMother.with_max_retries(
max_retries_allowed)
consumer.add_subscribers(subscribers)
def dead_letter_consumer(event: Event) -> Result[bool, Error]:
spy_dead_letter.append(event)
return isSuccess
consumer.add_subscriber_on_dead_letter(subscriber, dead_letter_consumer)
consumer.start()
sleep(1.5)
consumer.stop()
configurer.clear()
spy.assert_number_unique_events(1)
spy.assert_first_event(event)
spy.assert_count_by_event_id(event.event_id,
expected_number_event_consumed)
spy_dead_letter.assert_number_unique_events(1)
spy_dead_letter.assert_first_event(event)
spy_dead_letter.assert_count_by_event_id(event.event_id, 1)
def test_should_publish_consume_and_retry_event_not_affecting_store_queue_from_rabbitmq_when_fail_handler_consumer(
max_retries_allowed, expected_number_event_consumed,
simulated_results):
spy_consumer_event_store = SpyEvents()
spy_consumer_handler = SpyEvents()
def assert_consumer_event_store(event: Event) -> Result[bool, Error]:
spy_consumer_event_store.append(event)
return isSuccess
def assert_consumer_handler(event: Event) -> Result[bool, Error]:
spy_consumer_handler.append(event)
result = simulated_results.pop(0)
return result
event = EventUserCreatedMother.random()
subscribers = [
EventSubscriber(
event_name=event.event_name,
event_version=event.event_version,
handlers=[assert_consumer_handler],
)
]
configurer = RabbitMqEventConfigurerMother.with_retry_ttl_10ms()
configurer.configure_subscribers(subscribers)
bus = RabbitMqEventBusMother.default()
bus.publish(event)
consumer = RabbitMqEventConsumerMother.with_max_retries(
max_retries_allowed)
consumer.add_subscribers(subscribers)
consumer.add_handler_on_queue("store", assert_consumer_event_store)
consumer.start()
sleep(1.0)
consumer.stop()
configurer.clear()
spy_consumer_event_store.assert_number_unique_events(1)
spy_consumer_event_store.assert_first_event(event)
spy_consumer_event_store.assert_count_by_event_id(event.event_id, 1)
spy_consumer_handler.assert_number_unique_events(1)
spy_consumer_handler.assert_first_event(event)
spy_consumer_handler.assert_count_by_event_id(
event.event_id, expected_number_event_consumed)
def test_should_consumer_react_to_chaos_with_zero_probability():
spy = SpyEvents()
logger = FakeLogger()
def assert_consumer(event: Event) -> Result[bool, Error]:
spy.append(event)
return isSuccess
event = EventUserCreatedMother.random()
subscribers = [
EventSubscriber(
event_name=event.event_name,
event_version=event.event_version,
handlers=[assert_consumer],
)
]
configurer = RabbitMqEventConfigurerMother.with_retry_ttl_10ms()
configurer.configure_subscribers(subscribers)
bus = RabbitMqEventBusMother.default()
bus.publish(event)
max_retries_allowed = 5
chaos = RabbitMqEventChaos(
percentage_simulate_nack=0.0, percentage_simulate_failures=0.0
)
consumer = RabbitMqEventConsumerMother.with_chaos(
chaos, max_retries_allowed, logger
)
consumer.add_subscribers(subscribers)
consumer.start()
sleep(1.0)
consumer.stop()
configurer.clear()
spy.assert_number_unique_events(1)
spy.assert_first_event(event)
spy.assert_count_by_event_id(event.event_id, 1)
assert len(logger.get_logging_messages()) == 2
logging_message = logger.get_logging_messages()[1]
assert logging_message[0] == DEBUG
assert logging_message[1]["data"]["message"]["derived_action"] == {}
def test_should_unsubscribe_and_resume_handler_on_store_queue():
spy = SpyEvents()
spy_dead_letter = SpyEvents()
def assert_consumer_event_store(event: Event) -> BoolResult:
spy.append(event)
return isSuccess
def assert_consumer_event_dead_letter(event: Event) -> BoolResult:
spy_dead_letter.append(event)
return isSuccess
bus = RabbitMqEventBusMother.default()
first_event = EventUserCreatedMother.random()
configurer = RabbitMqEventConfigurerMother.with_retry_ttl_10ms()
configurer.configure_event(first_event)
# Consumer configuration
consumer = RabbitMqEventConsumerMother.default()
consumer.add_handler_on_store(assert_consumer_event_store)
consumer.add_handler_on_queue(
"dead_letter.store", assert_consumer_event_dead_letter
)
consumer.start()
bus.publish(first_event)
sleep(1.0)
consumer.unsubscribe_handler_on_queue("store")
for i in range(10):
bus.publish(EventUserCreatedMother.random())
sleep(5.0)
consumer.resume_handler_on_queue("store")
second_event = EventUserCreatedMother.random()
bus.publish(second_event)
sleep(3.0)
consumer.stop()
configurer.clear()
spy.assert_number_unique_events(2)
spy.assert_count_by_event_id(first_event.event_id, 1)
spy.assert_count_by_event_id(second_event.event_id, 1)
spy_dead_letter.assert_number_unique_events(10)
def test_should_publish_consume_with_event_handler_when_fail_consumer():
spy = SpyEvents()
logger = FakeLogger()
@event_handler(logger=logger)
def assert_consumer(event: Event) -> Result[bool, Error]:
spy.append(event)
return isFailure
event = EventUserCreatedMother.random()
subscribers = [
EventSubscriber(
event_name=event.event_name,
event_version=event.event_version,
handlers=[assert_consumer],
)
]
configurer = RabbitMqEventConfigurerMother.default()
configurer.configure_subscribers(subscribers)
bus = RabbitMqEventBusMother.default()
bus.publish(event)
consumer = RabbitMqEventConsumerMother.with_max_retries(1)
consumer.add_subscribers(subscribers)
consumer.start()
sleep(1.0)
consumer.stop()
configurer.clear()
spy.assert_number_unique_events(1)
spy.assert_first_event(event)
spy.assert_count_by_event_id(event.event_id, 1)
first_logging_message = logger.get_logging_messages()[0]
assert first_logging_message == (
DEBUG,
LogMessageMother.get_event_handler(
operation="assert_consumer",
message={"event": event.event_name, "body": event.to_json()},
).to_dict(),
)
def test_should_publish_consume_and_retry_event_with_two_handlers_from_rabbitmq(
):
spy_consumer_1 = SpyEvents()
spy_consumer_2 = SpyEvents()
def assert_consumer_1(event: Event) -> Result[bool, Error]:
spy_consumer_1.append(event)
return isSuccess
def assert_consumer_2(event: Event) -> Result[bool, Error]:
spy_consumer_2.append(event)
return isSuccess
event = EventUserCreatedMother.random()
subscribers = [
EventSubscriber(
event_name=event.event_name,
event_version=event.event_version,
handlers=[assert_consumer_1, assert_consumer_2],
)
]
configurer = RabbitMqEventConfigurerMother.default()
configurer.configure_subscribers(subscribers)
bus = RabbitMqEventBusMother.default()
bus.publish(event)
consumer = RabbitMqEventConsumerMother.default()
consumer.add_subscribers(subscribers)
consumer.start()
sleep(1.0)
consumer.stop()
configurer.clear()
spy_consumer_1.assert_number_unique_events(1)
spy_consumer_1.assert_first_event(event)
spy_consumer_1.assert_count_by_event_id(event.event_id, 1)
spy_consumer_2.assert_number_unique_events(1)
spy_consumer_2.assert_first_event(event)
spy_consumer_2.assert_count_by_event_id(event.event_id, 1)
def test_should_retry_publish_only_on_store_queue_not_affecting_default_event_queue(
):
spy_consumer_default_queue = SpyEvents()
spy_consumer_store = SpyEvents()
def assert_consumer_default_queue(event: Event) -> BoolResult:
spy_consumer_default_queue.append(event)
return isSuccess
def assert_consumer_store(event: Event) -> BoolResult:
spy_consumer_store.append(event)
return isSuccess
event = EventUserCreatedMother.random()
subscribers = [
EventSubscriber(
event_name=event.event_name,
event_version=event.event_version,
handlers=[assert_consumer_default_queue],
)
]
configurer = RabbitMqEventConfigurerMother.default()
configurer.configure_subscribers(subscribers)
bus = RabbitMqEventBusMother.default()
bus.retry_publish_only_on_store_queue(event)
consumer = RabbitMqEventConsumerMother.default()
consumer.add_subscribers(subscribers)
consumer.add_handler_on_store(assert_consumer_store)
consumer.start()
sleep(1.0)
consumer.stop()
configurer.clear()
spy_consumer_default_queue.assert_number_unique_events(0)
spy_consumer_default_queue.assert_count_by_event_id(event.event_id, 0)
spy_consumer_store.assert_number_unique_events(1)
spy_consumer_store.assert_first_event(event)
spy_consumer_store.assert_count_by_event_id(event.event_id, 1)
def test_should_configure_two_services_without_subscribers_and_consuming_event_from_store_queues(
publish_events_service_1,
publish_events_service_2,
expected_unique_events,
expected_total_received_events,
simulated_results_store,
):
spy = SpyEvents()
def assert_store(event: Event) -> BoolResult:
spy.append(event)
result = simulated_results_store.pop(0)
return result
configurer_service_1 = RabbitMqEventConfigurerMother.with_service(
"service1")
configurer_service_1.configure()
configurer_service_2 = RabbitMqEventConfigurerMother.with_service(
"service2")
configurer_service_2.configure()
bus_service_1 = RabbitMqEventBusMother.with_service("service1")
bus_service_2 = RabbitMqEventBusMother.with_service("service2")
def publish_event(bus: IEventBus, times: int):
for _ in range(times):
event = EventUserCreatedMother.random()
bus.publish(event)
publish_event(bus_service_1, publish_events_service_1)
publish_event(bus_service_2, publish_events_service_2)
consumer = RabbitMqEventConsumerMother.with_service("service1")
consumer.add_handler_on_store(assert_store)
consumer.start()
sleep(1.0)
consumer.stop()
configurer_service_1.clear()
configurer_service_2.clear()
spy.assert_number_unique_events(expected_unique_events)
spy.assert_number_total_events(expected_total_received_events)
def test_should_publish_consume_with_event_handler_with_default_parameters_when_success_consumer(
given_any_petisco
):
spy = SpyEvents()
@event_handler()
def assert_consumer(event: Event) -> Result[bool, Error]:
spy.append(event)
return isSuccess
event = EventUserCreatedMother.random()
subscribers = [
EventSubscriber(
event_name=event.event_name,
event_version=event.event_version,
handlers=[assert_consumer],
)
]
configurer = RabbitMqEventConfigurerMother.default()
configurer.configure_subscribers(subscribers)
bus = RabbitMqEventBusMother.default()
bus.publish(event)
consumer = RabbitMqEventConsumerMother.without_retry()
consumer.add_subscribers(subscribers)
consumer.start()
sleep(1.0)
consumer.stop()
configurer.clear()
spy.assert_number_unique_events(1)
spy.assert_first_event(event)
spy.assert_count_by_event_id(event.event_id, 1)
def test_should_publish_consume_from_store_queue_from_rabbitmq_with_stop_and_start():
spy = SpyEvents()
def assert_consumer_event_store(event: Event) -> BoolResult:
spy.append(event)
return isSuccess
bus = RabbitMqEventBusMother.default()
first_event = EventUserCreatedMother.random()
configurer = RabbitMqEventConfigurerMother.default()
configurer.configure_event(first_event)
# First Start & Stop
bus.publish(first_event)
first_consumer = RabbitMqEventConsumerMother.default()
first_consumer.add_handler_on_store(assert_consumer_event_store)
first_consumer.start()
sleep(1.0)
first_consumer.stop()
# Second Start & Stop
second_event = EventUserCreatedMother.random()
second_consumer = RabbitMqEventConsumerMother.default()
second_consumer.add_handler_on_store(assert_consumer_event_store)
second_consumer.start()
bus.publish(second_event)
sleep(1.0)
second_consumer.stop()
configurer.clear()
spy.assert_number_unique_events(2)
spy.assert_count_by_event_id(first_event.event_id, 1)
spy.assert_count_by_event_id(second_event.event_id, 1)
def test_should_publish_event_on_consumer_with_event_handler():
spy = SpyEvents()
@event_handler(logger=FakeLogger())
def assert_consumer(event: Event, event_bus: IEventBus) -> BoolResult:
spy.append(event)
event = EventUserUpdatedMother.random()
event_bus.publish(event)
return isSuccess
event = EventUserCreatedMother.random()
subscribers = [
EventSubscriber(
event_name=event.event_name,
event_version=event.event_version,
handlers=[assert_consumer],
)
]
configurer = RabbitMqEventConfigurerMother.with_retry_ttl_10ms()
configurer.configure_subscribers(subscribers)
consumer = RabbitMqEventConsumerMother.with_max_retries(1)
consumer.add_subscribers(subscribers)
consumer.start()
bus = RabbitMqEventBusMother.default()
for _ in range(1):
event = EventUserCreatedMother.random()
bus.publish(event)
sleep(1.0)
consumer.stop()
configurer.clear()
spy.assert_number_unique_events(1)