def test_buffer_publishes_with_confirm_mode_on(self):
"""
Verify buffering publishes, with confirm mode on, and then starting the
producer results in a correct number of messages being sent
successfully, measured by counting and verifying the Basic.Acks
received from the broker.
"""
producer = RMQProducer()
event = threading.Event()
key_dict = dict()
def on_confirm(confirm):
if not isinstance(confirm, ConfirmModeOK):
key_dict.pop(confirm)
if len(key_dict.keys()) == 0:
event.set()
# Activate confirm mode
producer.activate_confirm_mode(on_confirm)
# Buffer a few publishes
key_dict[producer.publish(
b"body",
exchange_params=ExchangeParams("exchange_direct"))] = False
key_dict[producer.publish(
b"body",
exchange_params=ExchangeParams("exchange_direct"))] = False
key_dict[producer.publish(
b"body",
exchange_params=ExchangeParams("exchange_direct"))] = False
self.assertEqual(len(producer._unacked_publishes.keys()), 0)
self.assertEqual(len(producer._buffered_messages), 3)
# Start the producer
producer.start()
self.assertTrue(started(producer))
# Await all confirms
event.wait(timeout=1.0)
self.assertEqual(len(producer._unacked_publishes.keys()), 0)
# Stop the extra producer
producer.stop()
class IntegrationTest(unittest.TestCase):
def setUp(self) -> None:
self.consumer = RMQConsumer()
self.consumer.start()
self.assertTrue(started(self.consumer))
self.producer = RMQProducer()
self.producer.start()
self.assertTrue(started(self.producer))
def tearDown(self) -> None:
self.consumer.stop()
self.producer.stop()
def test_stop_consumer(self):
"""
Verify RMQConsumer, when stopped, shuts down completely and releases
allocated resources.
"""
# Run test
self.consumer.stop()
thread_count = len(threading.enumerate())
# Only MainThread should still be running.
self.assertEqual(2, thread_count)
def test_consume_from_queue(self):
"""Verify RMQConsumer can consume from a queue."""
msg_received = None
event = threading.Event()
def on_msg(msg):
event.set()
nonlocal msg_received
msg_received = msg
# Consume
consume_key = self.consumer.consume(ConsumeParams(on_msg),
queue_params=QueueParams("queue"))
self.assertEqual(consume_key, "queue")
# Wait for ConsumeOK
event.wait(timeout=1.0)
self.assertTrue(isinstance(msg_received, ConsumeOK))
# Send a message and verify it is delivered OK
event.clear() # clear to re-use event
self.producer.publish(b"body", queue_params=QueueParams("queue"))
event.wait(timeout=1.0)
self.assertEqual(msg_received, b"body")
def test_consume_from_direct_exchange(self):
"""
Verify RMQConsumer can consume from a direct exchange and routing key.
"""
msg_received = None
event = threading.Event()
def on_msg(msg):
event.set()
nonlocal msg_received
msg_received = msg
# Consume
consume_key = self.consumer.consume(
ConsumeParams(on_msg),
exchange_params=ExchangeParams("exchange"),
routing_key="bla.bla")
self.assertEqual(consume_key, "exchange|bla.bla")
# Wait for ConsumeOK
event.wait(timeout=1.0)
self.assertTrue(isinstance(msg_received, ConsumeOK))
# Send a message and verify it is delivered OK
event.clear()
self.producer.publish(b"body",
exchange_params=ExchangeParams("exchange"),
routing_key="bla.bla")
event.wait(timeout=1.0)
self.assertEqual(msg_received, b"body")
def test_consume_from_fanout_exchange(self):
"""
Verify RMQConsumer can consume from a fanout exchange.
"""
msg_received = None
event = threading.Event()
def on_msg(msg):
event.set()
nonlocal msg_received
msg_received = msg
# Consume
consume_key = self.consumer.consume(
ConsumeParams(on_msg),
exchange_params=ExchangeParams("exchange_fanout",
exchange_type=ExchangeType.fanout))
self.assertEqual(consume_key, "exchange_fanout")
# Wait for ConsumeOK
event.wait(timeout=1.0)
self.assertTrue(isinstance(msg_received, ConsumeOK))
# Send a message and verify it is delivered OK
event.clear()
self.producer.publish(b"body",
exchange_params=ExchangeParams(
"exchange_fanout",
exchange_type=ExchangeType.fanout))
event.wait(timeout=1.0)
self.assertEqual(msg_received, b"body")
def test_consume_from_exchange_and_queue(self):
"""
Verify RMQConsumer can consume from an exchange, binding it to a
specific queue.
"""
msg_received = None
event = threading.Event()
def on_msg(msg):
event.set()
nonlocal msg_received
msg_received = msg
# Consume
consume_key = self.consumer.consume(
ConsumeParams(on_msg),
exchange_params=ExchangeParams("exchange_fanout",
exchange_type=ExchangeType.fanout),
queue_params=QueueParams("queue_fanout_receiver"))
self.assertEqual(consume_key, "queue_fanout_receiver|exchange_fanout")
# Wait for ConsumeOK
event.wait(timeout=1.0)
self.assertTrue(isinstance(msg_received, ConsumeOK))
# Send a message and verify it is delivered OK
event.clear()
self.producer.publish(b"body",
exchange_params=ExchangeParams(
"exchange_fanout",
exchange_type=ExchangeType.fanout))
event.wait(timeout=1.0)
self.assertEqual(msg_received, b"body")
def test_consume_from_exchange_routing_key_and_queue(self):
"""
Verify RMQConsumer can consume from an exchange, binding it to a
specific queue.
"""
msg_received = None
event = threading.Event()
def on_msg(msg):
event.set()
nonlocal msg_received
msg_received = msg
# Consume
consume_key = self.consumer.consume(
ConsumeParams(on_msg),
exchange_params=ExchangeParams("exchange_direct"),
routing_key="fish",
queue_params=QueueParams("queue_direct_receiver"))
self.assertEqual(consume_key,
"queue_direct_receiver|exchange_direct|fish")
# Wait for ConsumeOK
event.wait(timeout=1.0)
self.assertTrue(isinstance(msg_received, ConsumeOK))
# Send a message and verify it is delivered OK
event.clear()
self.producer.publish(
b"body",
exchange_params=ExchangeParams("exchange_direct"),
routing_key="fish")
event.wait(timeout=1.0)
self.assertEqual(msg_received, b"body")
def test_confirm_mode(self):
"""
Verify confirm mode pushes publish_keys to users on successful
delivery.
"""
msg_received = None
event = threading.Event()
def on_confirm(confirm):
event.set()
nonlocal msg_received
msg_received = confirm
# Activate confirm mode
self.producer.activate_confirm_mode(on_confirm)
# Wait for ConfirmModeOK
event.wait(timeout=1.0)
self.assertTrue(isinstance(msg_received, ConfirmModeOK))
# Send a message and verify it is delivered OK
event.clear()
publish_key = self.producer.publish(
b"body",
exchange_params=ExchangeParams("exchange_direct"),
)
event.wait(timeout=1.0)
self.assertEqual(msg_received, publish_key)
self.assertEqual(len(self.producer._unacked_publishes.keys()), 0)
def test_buffer_publishes_with_confirm_mode_on(self):
"""
Verify buffering publishes, with confirm mode on, and then starting the
producer results in a correct number of messages being sent
successfully, measured by counting and verifying the Basic.Acks
received from the broker.
"""
producer = RMQProducer()
event = threading.Event()
key_dict = dict()
def on_confirm(confirm):
if not isinstance(confirm, ConfirmModeOK):
key_dict.pop(confirm)
if len(key_dict.keys()) == 0:
event.set()
# Activate confirm mode
producer.activate_confirm_mode(on_confirm)
# Buffer a few publishes
key_dict[producer.publish(
b"body",
exchange_params=ExchangeParams("exchange_direct"))] = False
key_dict[producer.publish(
b"body",
exchange_params=ExchangeParams("exchange_direct"))] = False
key_dict[producer.publish(
b"body",
exchange_params=ExchangeParams("exchange_direct"))] = False
self.assertEqual(len(producer._unacked_publishes.keys()), 0)
self.assertEqual(len(producer._buffered_messages), 3)
# Start the producer
producer.start()
self.assertTrue(started(producer))
# Await all confirms
event.wait(timeout=1.0)
self.assertEqual(len(producer._unacked_publishes.keys()), 0)
# Stop the extra producer
producer.stop()
@classmethod
def tearDownClass(cls) -> None:
"""
Need general teardown since not wanting to introduce waits part of
test cases. Need to purge queues as consumer/producers are stopped
before acking messages, sometimes.
This teardown enabled re-testability without getting messages sent by
a previous run.
"""
client = RMQConsumer()
client.start()
assert started(client)
client._channel.queue_purge("queue_fanout_receiver")
client._channel.queue_purge("queue")
client.stop()
class TestConfirmMode(unittest.TestCase):
"""
Test the confirm mode functionality of RMQProducer.
"""
@patch("rabbitmq_client.producer.RMQProducer.start")
def setUp(self, _connection_start) -> None:
"""Setup to run before each test case."""
self.producer = RMQProducer()
self.producer.start()
self.producer.on_ready() # Fake connection getting ready
self.producer.confirm_delivery = Mock()
self.producer.declare_exchange = Mock()
self.producer.basic_publish = Mock()
def test_activate_confirm_mode(self):
"""
Verify that confirm mode, when activated, yields the expected state.
"""
# Prep
confirm_mode_started = False
def notify_callback(confirm):
nonlocal confirm_mode_started
if isinstance(confirm, ConfirmModeOK):
confirm_mode_started = True
# Test
self.producer.activate_confirm_mode(notify_callback)
self.producer.confirm_delivery.assert_called_with(
self.producer.on_delivery_confirmed,
callback=self.producer.on_confirm_select_ok)
self.assertFalse(self.producer._confirm_mode_active)
self.producer.on_confirm_select_ok(Mock())
# Assert
self.assertTrue(confirm_mode_started)
self.assertTrue(self.producer._confirm_mode_active)
def test_confirm_mode_publish_key_returned_by_publish(self):
"""
Verify that a publish key is generated and returned by publish if
confirm mode is activated.
"""
# Prep
publish_key = None
def on_confirm(delivery_notification):
if delivery_notification == publish_key:
return
elif isinstance(delivery_notification, ConfirmModeOK):
return
self.fail("delivery notification did not match the generated "
"publish key")
self.producer.activate_confirm_mode(on_confirm)
self.producer.confirm_delivery.assert_called_with(
self.producer.on_delivery_confirmed,
callback=self.producer.on_confirm_select_ok)
self.producer.on_confirm_select_ok(None)
exchange_params = ExchangeParams("exchange")
# Test
publish_key = self.producer.publish(b"body",
exchange_params=exchange_params)
self.producer.declare_exchange.assert_called()
self.producer.on_exchange_declared(b"body",
exchange_params,
None,
publish_key=publish_key)
self.producer.basic_publish.assert_called_with(
b"body",
exchange=exchange_params.exchange,
routing_key="",
publish_params=ANY)
# 1 is the delivery tag
self.assertEqual(self.producer._unacked_publishes[1], publish_key)
frame = Mock()
ack = Basic.Ack()
ack.delivery_tag = 1
frame.method = ack
self.producer.on_delivery_confirmed(frame)
self.assertEqual(len(self.producer._unacked_publishes.keys()), 0)
def test_on_ready_initiates_confirm_mode_again(self):
"""
Verify that after connectivity issues, on_ready will re-start confirm-
mode.
"""
# Prep
self.producer.activate_confirm_mode(lambda _:...)
# Test
self.producer.on_ready()
# Assert
self.producer.confirm_delivery.assert_called_with(
self.producer.on_delivery_confirmed,
callback=self.producer.on_confirm_select_ok)
def test_delivery_not_acked_leads_to_delivery_error(self):
"""
Verify that if a delivery confirmation is NOT an ack, a delivery error
is propagated to the delivery notify callback.
"""
# Prep
got_error = False
def on_confirm(error):
nonlocal got_error
got_error = True
if isinstance(error, DeliveryError):
self.assertEqual("123", error.publish_key)
self.producer.activate_confirm_mode(on_confirm)
self.producer._unacked_publishes[1] = "123"
# Test
frame = Mock()
frame.method = Basic.Nack()
frame.method.delivery_tag = 1
self.producer.on_delivery_confirmed(frame)
# Assert
self.assertTrue(got_error)
def test_activate_confirm_mode_idempotent(self):
"""
Verify that calling activate_confirm_mode more than once has no effect,
and will yield the same result as calling it once.
"""
# Prep
def on_confirm():
...
# Test + assert
self.producer.activate_confirm_mode(on_confirm)
self.producer.activate_confirm_mode(on_confirm)
self.producer.confirm_delivery.assert_called_once()
def test_confirm_mode_delays_buffer_until_confirm_mode_ok(self):
"""
Verify that, if confirm mode has been activated, buffered publishes
are not sent on 'on_ready', but rather 'on_confirm_select_ok'.
"""
# Prep
self.producer.activate_confirm_mode(lambda _:...)
self.producer.on_close()
exchange_params = ExchangeParams("exchange")
# Test + assertions
_pub_key = self.producer.publish(b"body",
exchange_params=exchange_params)
self.assertNotEqual(_pub_key, None)
self.producer.declare_exchange.assert_not_called()
self.assertEqual(len(self.producer._buffered_messages), 1)
self.producer.on_ready()
self.producer.declare_exchange.assert_not_called()
self.assertEqual(len(self.producer._buffered_messages), 1)
self.producer.on_confirm_select_ok(Mock())
self.producer.declare_exchange.assert_called()
self.assertEqual(len(self.producer._buffered_messages), 0)
def test_publish_before_confirm_mode_ok_buffers_the_publish(self):
"""
Verify that any call to publish before confirm mode ok (when confirm
mode has been activated) leads to the call being buffered and delayed
until 'on_confirm_select_ok'.
"""
# Prep
self.producer.activate_confirm_mode(lambda _:...)
exchange_params = ExchangeParams("exchange")
# Test + assertions
_pub_key = self.producer.publish(b"body",
exchange_params=exchange_params)
self.assertNotEqual(_pub_key, None)
self.producer.declare_exchange.assert_not_called()
self.assertEqual(len(self.producer._buffered_messages), 1)
self.producer.on_confirm_select_ok(Mock())
self.producer.declare_exchange.assert_called()
self.assertEqual(len(self.producer._buffered_messages), 0)
def stop(*args):
producer.stop()
sys.exit(0)
signal.signal(signal.SIGINT, stop)
producer.publish(b"queue publish 1", queue_params=QueueParams("queue"))
producer.publish(b"queue publish 2", queue_params=QueueParams("queue"))
producer.publish(b"queue publish 3", queue_params=QueueParams("queue"))
producer.publish(b"exchange publish 1",
exchange_params=ExchangeParams("direct"),
routing_key="rkey")
producer.publish(b"exchange publish 2",
exchange_params=ExchangeParams(
"fanout", exchange_type=ExchangeType.fanout))
time.sleep(0.3)
producer.activate_confirm_mode(lambda x: print(x))
producer.publish(b"exchange publish 2",
exchange_params=ExchangeParams(
"fanout", exchange_type=ExchangeType.fanout))
producer.publish(b"exchange publish 2",
exchange_params=ExchangeParams(
"fanout", exchange_type=ExchangeType.fanout))
producer.publish(b"exchange publish 2",
exchange_params=ExchangeParams(
"fanout", exchange_type=ExchangeType.fanout))
threading.Event().wait()