def test_reconnect_on_socket_error():
container = Mock()
container.config = {AMQP_URI_CONFIG_KEY: None}
container.max_workers = 1
container.spawn_managed_thread = spawn_thread
connection_revived = Mock()
queue_consumer = QueueConsumer()
queue_consumer.on_connection_revived = connection_revived
queue_consumer.bind("queue_consumer", container)
handler = MessageHandler()
queue_consumer.register_provider(handler)
queue_consumer.start()
with patch.object(Connection, 'drain_events',
autospec=True) as drain_events:
drain_events.side_effect = socket.error('test-error')
def check_reconnected():
assert connection_revived.call_count > 1
assert_stops_raising(check_reconnected)
def test_kill_closes_connections(rabbit_manager, rabbit_config):
container = Mock()
container.config = rabbit_config
container.max_workers = 1
container.spawn_managed_thread = spawn_thread
queue_consumer = QueueConsumer()
queue_consumer.bind("queue_consumer", container)
class Handler(object):
queue = ham_queue
def handle_message(self, body, message):
pass
queue_consumer.register_provider(Handler())
queue_consumer.start()
# kill should close all connections
queue_consumer.kill()
# no connections should remain for our vhost
vhost = rabbit_config['vhost']
connections = get_rabbit_connections(vhost, rabbit_manager)
if connections:
for connection in connections:
assert connection['vhost'] != vhost
def test_reconnect_on_socket_error(rabbit_config, mock_container):
container = mock_container
container.shared_extensions = {}
container.config = rabbit_config
container.max_workers = 1
container.spawn_managed_thread = spawn_managed_thread
connection_revived = Mock()
queue_consumer = QueueConsumer().bind(container)
queue_consumer.setup()
queue_consumer.on_connection_revived = connection_revived
handler = MessageHandler()
queue_consumer.register_provider(handler)
queue_consumer.start()
with patch.object(Connection, "drain_events", autospec=True) as drain_events:
drain_events.side_effect = socket.error("test-error")
def check_reconnected():
assert connection_revived.call_count > 1
assert_stops_raising(check_reconnected)
queue_consumer.unregister_provider(handler)
queue_consumer.stop()
def test_kill_closes_connections(rabbit_manager, rabbit_config):
container = Mock()
container.config = rabbit_config
container.max_workers = 1
container.spawn_managed_thread = spawn_thread
queue_consumer = QueueConsumer()
queue_consumer.bind("queue_consumer", container)
class Handler(object):
queue = ham_queue
def handle_message(self, body, message):
pass
queue_consumer.register_provider(Handler())
queue_consumer.start()
# kill should close all connections
queue_consumer.kill()
# no connections should remain for our vhost
vhost = rabbit_config['vhost']
connections = get_rabbit_connections(vhost, rabbit_manager)
if connections:
for connection in connections:
assert connection['vhost'] != vhost
def test_kill_closes_connections(rabbit_manager, rabbit_config, mock_container):
container = mock_container
container.shared_extensions = {}
container.config = rabbit_config
container.max_workers = 1
container.spawn_managed_thread = spawn_managed_thread
queue_consumer = QueueConsumer().bind(container)
queue_consumer.setup()
class Handler(object):
queue = ham_queue
def handle_message(self, body, message):
pass # pragma: no cover
queue_consumer.register_provider(Handler())
queue_consumer.start()
# kill should close all connections
queue_consumer.kill()
# no connections should remain for our vhost
vhost = rabbit_config["vhost"]
connections = get_rabbit_connections(vhost, rabbit_manager)
if connections: # pragma: no cover
for connection in connections:
assert connection["vhost"] != vhost
def test_reconnect_on_socket_error():
container = Mock()
container.config = {AMQP_URI_CONFIG_KEY: None}
container.max_workers = 1
container.spawn_managed_thread = spawn_thread
connection_revived = Mock()
queue_consumer = QueueConsumer()
queue_consumer.on_connection_revived = connection_revived
queue_consumer.bind("queue_consumer", container)
handler = MessageHandler()
queue_consumer.register_provider(handler)
queue_consumer.start()
with patch.object(
Connection, 'drain_events', autospec=True) as drain_events:
drain_events.side_effect = socket.error('test-error')
def check_reconnected():
assert connection_revived.call_count > 1
assert_stops_raising(check_reconnected)
def test_lifecycle(rabbit_manager, rabbit_config, mock_container):
container = mock_container
container.shared_extensions = {}
container.config = rabbit_config
container.max_workers = 3
container.spawn_managed_thread.side_effect = spawn_managed_thread
content_type = 'application/data'
container.accept = [content_type]
queue_consumer = QueueConsumer().bind(container)
handler = MessageHandler()
queue_consumer.register_provider(handler)
queue_consumer.setup()
queue_consumer.start()
# making sure the QueueConsumer uses the container to spawn threads
container.spawn_managed_thread.assert_called_once_with(ANY)
vhost = rabbit_config['vhost']
rabbit_manager.publish(vhost,
'spam',
'',
'shrub',
properties=dict(content_type=content_type))
message = handler.wait()
gt = eventlet.spawn(queue_consumer.unregister_provider, handler)
# wait for the handler to be removed
with eventlet.Timeout(TIMEOUT):
while len(queue_consumer._consumers):
eventlet.sleep()
# remove_consumer has to wait for all messages to be acked
assert not gt.dead
# the consumer should have stopped and not accept any new messages
rabbit_manager.publish(vhost, 'spam', '', 'ni')
# this should cause the consumer to finish shutting down
queue_consumer.ack_message(message)
with eventlet.Timeout(TIMEOUT):
gt.wait()
# there should be a message left on the queue
messages = rabbit_manager.get_messages(vhost, 'ham')
assert ['ni'] == [msg['payload'] for msg in messages]
queue_consumer.kill()
def test_lifecycle(rabbit_manager, rabbit_config, mock_container):
container = mock_container
container.shared_extensions = {}
container.config = rabbit_config
container.max_workers = 3
container.spawn_managed_thread.side_effect = spawn_thread
content_type = 'application/data'
container.accept = [content_type]
queue_consumer = QueueConsumer().bind(container)
handler = MessageHandler()
queue_consumer.register_provider(handler)
queue_consumer.setup()
queue_consumer.start()
# making sure the QueueConsumer uses the container to spawn threads
container.spawn_managed_thread.assert_called_once_with(ANY, protected=True)
vhost = rabbit_config['vhost']
rabbit_manager.publish(vhost, 'spam', '', 'shrub',
properties=dict(content_type=content_type))
message = handler.wait()
gt = eventlet.spawn(queue_consumer.unregister_provider, handler)
# wait for the handler to be removed
with eventlet.Timeout(TIMEOUT):
while len(queue_consumer._consumers):
eventlet.sleep()
# remove_consumer has to wait for all messages to be acked
assert not gt.dead
# the consumer should have stopped and not accept any new messages
rabbit_manager.publish(vhost, 'spam', '', 'ni')
# this should cause the consumer to finish shutting down
queue_consumer.ack_message(message)
with eventlet.Timeout(TIMEOUT):
gt.wait()
# there should be a message left on the queue
messages = rabbit_manager.get_messages(vhost, 'ham')
assert ['ni'] == [msg['payload'] for msg in messages]
queue_consumer.kill()
def test_reentrant_start_stops(rabbit_config):
container = Mock()
container.config = rabbit_config
container.max_workers = 3
container.spawn_managed_thread = spawn_thread
queue_consumer = QueueConsumer()
queue_consumer.bind("queue_consumer", container)
queue_consumer.start()
gt = queue_consumer._gt
# nothing should happen as the consumer has already been started
queue_consumer.start()
assert gt is queue_consumer._gt
def test_reentrant_start_stops():
container = Mock()
container.config = {AMQP_URI_CONFIG_KEY: 'memory://'}
container.max_workers = 3
container.spawn_managed_thread = spawn_thread
queue_consumer = QueueConsumer()
queue_consumer.bind("queue_consumer", container)
queue_consumer.start()
gt = queue_consumer._gt
# nothing should happen as the consumer has already been started
queue_consumer.start()
assert gt is queue_consumer._gt
queue_consumer.kill()
def test_reentrant_start_stops():
container = Mock()
container.config = {AMQP_URI_CONFIG_KEY: 'memory://'}
container.max_workers = 3
container.spawn_managed_thread = spawn_thread
queue_consumer = QueueConsumer()
queue_consumer.bind("queue_consumer", container)
queue_consumer.start()
gt = queue_consumer._gt
# nothing should happen as the consumer has already been started
queue_consumer.start()
assert gt is queue_consumer._gt
queue_consumer.kill()
def test_reentrant_start_stops(rabbit_config):
container = Mock()
container.config = rabbit_config
container.max_workers = 3
container.spawn_managed_thread = spawn_thread
queue_consumer = QueueConsumer()
queue_consumer.bind("queue_consumer", container)
queue_consumer.start()
gt = queue_consumer._gt
# nothing should happen as the consumer has already been started
queue_consumer.start()
assert gt is queue_consumer._gt
queue_consumer.kill()
def test_reentrant_start_stops(mock_container):
container = mock_container
container.shared_extensions = {}
container.config = {AMQP_URI_CONFIG_KEY: "memory://"}
container.max_workers = 3
container.spawn_managed_thread = spawn_managed_thread
queue_consumer = QueueConsumer().bind(container)
queue_consumer.setup()
queue_consumer.start()
gt = queue_consumer._gt
# nothing should happen as the consumer has already been started
queue_consumer.start()
assert gt is queue_consumer._gt
queue_consumer.kill()
def test_on_consume_error_kills_consumer(mock_container):
container = mock_container
container.shared_extensions = {}
container.config = {AMQP_URI_CONFIG_KEY: "memory://"}
container.max_workers = 1
container.spawn_managed_thread = spawn_managed_thread
queue_consumer = QueueConsumer().bind(container)
queue_consumer.setup()
handler = MessageHandler()
queue_consumer.register_provider(handler)
with patch.object(queue_consumer, "on_consume_ready") as on_consume_ready:
on_consume_ready.side_effect = Exception("err")
queue_consumer.start()
with pytest.raises(Exception):
queue_consumer._gt.wait()
def test_on_consume_error_kills_consumer():
container = Mock()
container.config = {AMQP_URI_CONFIG_KEY: None}
container.max_workers = 1
container.spawn_managed_thread = spawn_thread
queue_consumer = QueueConsumer()
queue_consumer.bind("queue_consumer", container)
handler = MessageHandler()
queue_consumer.register_provider(handler)
with patch.object(queue_consumer, 'on_consume_ready') as on_consume_ready:
on_consume_ready.side_effect = Exception('err')
queue_consumer.start()
with pytest.raises(Exception):
queue_consumer._gt.wait()
def test_on_consume_error_kills_consumer():
container = Mock()
container.config = {AMQP_URI_CONFIG_KEY: None}
container.max_workers = 1
container.spawn_managed_thread = spawn_thread
queue_consumer = QueueConsumer()
queue_consumer.bind("queue_consumer", container)
handler = MessageHandler()
queue_consumer.register_provider(handler)
with patch.object(queue_consumer, 'on_consume_ready') as on_consume_ready:
on_consume_ready.side_effect = Exception('err')
queue_consumer.start()
with pytest.raises(Exception):
queue_consumer._gt.wait()
def test_error_stops_consumer_thread():
container = Mock()
container.config = {AMQP_URI_CONFIG_KEY: 'memory://'}
container.max_workers = 3
container.spawn_managed_thread = spawn_thread
queue_consumer = QueueConsumer()
queue_consumer.bind("queue_consumer", container)
handler = MessageHandler()
queue_consumer.register_provider(handler)
with eventlet.Timeout(TIMEOUT):
with patch.object(Connection, 'drain_events',
autospec=True) as drain_events:
drain_events.side_effect = Exception('test')
queue_consumer.start()
with pytest.raises(Exception) as exc_info:
queue_consumer._gt.wait()
assert exc_info.value.args == ('test', )
def test_error_stops_consumer_thread(mock_container):
container = mock_container
container.shared_extensions = {}
container.config = {AMQP_URI_CONFIG_KEY: "memory://"}
container.max_workers = 3
container.spawn_managed_thread = spawn_managed_thread
queue_consumer = QueueConsumer().bind(container)
queue_consumer.setup()
handler = MessageHandler()
queue_consumer.register_provider(handler)
with eventlet.Timeout(TIMEOUT):
with patch.object(Connection, "drain_events", autospec=True) as drain_events:
drain_events.side_effect = Exception("test")
queue_consumer.start()
with pytest.raises(Exception) as exc_info:
queue_consumer._gt.wait()
assert exc_info.value.args == ("test",)
def test_error_stops_consumer_thread():
container = Mock()
container.config = {AMQP_URI_CONFIG_KEY: None}
container.max_workers = 3
container.spawn_managed_thread = spawn_thread
queue_consumer = QueueConsumer()
queue_consumer.bind("queue_consumer", container)
handler = MessageHandler()
queue_consumer.register_provider(handler)
with eventlet.Timeout(TIMEOUT):
with patch.object(
Connection, 'drain_events', autospec=True) as drain_events:
drain_events.side_effect = Exception('test')
queue_consumer.start()
with pytest.raises(Exception) as exc_info:
queue_consumer._gt.wait()
assert exc_info.value.args == ('test',)
def test_kill_closes_connections(rabbit_manager, rabbit_config):
container = Mock()
container.config = rabbit_config
container.max_workers = 1
container.spawn_managed_thread = spawn_thread
queue_consumer = QueueConsumer()
queue_consumer.bind("queue_consumer", container)
class Handler(object):
queue = ham_queue
def handle_message(self, body, message):
pass
queue_consumer.register_provider(Handler())
queue_consumer.start()
# kill should close all connections
queue_consumer.kill(Exception('test-kill'))
connections = rabbit_manager.get_connections()
assert connections is None
def test_prefetch_count(rabbit_manager, rabbit_config):
container = Mock()
container.config = rabbit_config
container.max_workers = 1
container.spawn_managed_thread = spawn_thread
queue_consumer1 = QueueConsumer()
queue_consumer1.bind("queue_consumer", container)
queue_consumer2 = QueueConsumer()
queue_consumer2.bind("queue_consumer", container)
consumer_continue = Event()
class Handler1(object):
queue = ham_queue
def handle_message(self, body, message):
consumer_continue.wait()
queue_consumer1.ack_message(message)
messages = []
class Handler2(object):
queue = ham_queue
def handle_message(self, body, message):
messages.append(body)
queue_consumer2.ack_message(message)
handler1 = Handler1()
handler2 = Handler2()
queue_consumer1.register_provider(handler1)
queue_consumer2.register_provider(handler2)
queue_consumer1.start()
queue_consumer2.start()
vhost = rabbit_config['vhost']
# the first consumer only has a prefetch_count of 1 and will only
# consume 1 message and wait in handler1()
rabbit_manager.publish(vhost, 'spam', '', 'ham')
# the next message will go to handler2() no matter of any prefetch_count
rabbit_manager.publish(vhost, 'spam', '', 'eggs')
# the third message is only going to handler2 because the first consumer
# has a prefetch_count of 1 and thus is unable to deal with another message
# until having ACKed the first one
rabbit_manager.publish(vhost, 'spam', '', 'bacon')
with eventlet.Timeout(TIMEOUT):
while len(messages) < 2:
eventlet.sleep()
# allow the waiting consumer to ack its message
consumer_continue.send(None)
assert messages == ['eggs', 'bacon']
queue_consumer1.unregister_provider(handler1)
queue_consumer2.unregister_provider(handler2)
queue_consumer1.kill()
queue_consumer2.kill()
def test_prefetch_count(rabbit_manager, rabbit_config):
container = Mock()
container.config = rabbit_config
container.max_workers = 1
container.spawn_managed_thread = spawn_thread
queue_consumer1 = QueueConsumer()
queue_consumer1.bind("queue_consumer", container)
queue_consumer2 = QueueConsumer()
queue_consumer2.bind("queue_consumer", container)
consumer_continue = Event()
class Handler1(object):
queue = ham_queue
def handle_message(self, body, message):
consumer_continue.wait()
queue_consumer1.ack_message(message)
messages = []
class Handler2(object):
queue = ham_queue
def handle_message(self, body, message):
messages.append(body)
queue_consumer2.ack_message(message)
handler1 = Handler1()
handler2 = Handler2()
queue_consumer1.register_provider(handler1)
queue_consumer2.register_provider(handler2)
queue_consumer1.start()
queue_consumer2.start()
vhost = rabbit_config['vhost']
# the first consumer only has a prefetch_count of 1 and will only
# consume 1 message and wait in handler1()
rabbit_manager.publish(vhost, 'spam', '', 'ham')
# the next message will go to handler2() no matter of any prefetch_count
rabbit_manager.publish(vhost, 'spam', '', 'eggs')
# the third message is only going to handler2 because the first consumer
# has a prefetch_count of 1 and thus is unable to deal with another message
# until having ACKed the first one
rabbit_manager.publish(vhost, 'spam', '', 'bacon')
with eventlet.Timeout(TIMEOUT):
while len(messages) < 2:
eventlet.sleep()
# allow the waiting consumer to ack its message
consumer_continue.send(None)
assert messages == ['eggs', 'bacon']
queue_consumer1.unregister_provider(handler1)
queue_consumer2.unregister_provider(handler2)
queue_consumer1.kill()
queue_consumer2.kill()