def test_routing_key_can_optionally_be_used_to_return_only_select_messages(
self):
queue = Queue(database='karait_test', queue='queue_test')
queue.write(Message({'foo': 1}), routing_key='foobar')
queue.write(Message({'foo': 2}))
messages = queue.read(routing_key='foobar')
self.assertEqual(1, len(messages))
self.assertEqual(1, messages[0].foo)
def test_calling_delete_on_a_message_returned_removes_it_from_mongodb(
self):
collection = Connection().karait_test.queue_test
queue = Queue(database='karait_test', queue='queue_test')
queue.write(Message({'foo': 1}))
self.assertEqual(1, collection.find({}).count())
queue.read()[0].delete()
self.assertEqual(0, len(queue.read()))
def test_a_message_with_a_unique_key_specified_can_only_be_inserted_once_for_a_given_key_value(
self):
queue = Queue(database='karait_test', queue='queue_test')
queue.write(Message({'foo': 'value1'}), unique_key='foo')
queue.write(Message({'foo': 'value1'}), unique_key='foo')
queue.write(Message({'foo': 'value2'}), unique_key='foo')
messages = queue.read()
self.assertEqual(len(messages), 2)
def test_read_with_no_routing_key_only_returns_messages_with_no_routing_key(
self):
queue = Queue(database='karait_test', queue='queue_test')
queue.write(Message({'foo': 1}), routing_key='foobar')
queue.write(Message({'foo': 2}))
messages = queue.read()
self.assertEqual(1, len(messages))
self.assertEqual(2, messages[0].foo)
def test_messages_returned_in_fifo_order(self):
queue = Queue(database='karait_test', queue='queue_test')
queue.write(Message({'foo': 1}))
queue.write(Message({'foo': 2}))
queue.write(Message({'foo': 3}))
messages = queue.read()
self.assertEqual(1, messages[0].foo)
self.assertEqual(2, messages[1].foo)
self.assertEqual(3, messages[2].foo)
def test_delete_messages_removes_whole_set_of_messages(self):
queue = Queue(database='karait_test', queue='queue_test')
queue.write(Message({'foo': 1}))
queue.write(Message({'foo': 2}))
queue.write(Message({'foo': 3}))
messages = queue.read()
self.assertEqual(3, len(messages))
queue.delete_messages(messages)
messages = queue.read()
self.assertEqual(0, len(messages))
def test_queue_initializes_capped_collection_for_queue_if_collection_does_not_exist(
self):
queue = Queue(database='karait_test',
queue='queue_test',
average_message_size=8192,
queue_size=4096)
collection = Connection().karait_test.queue_test
options = collection.options()
self.assertEqual(1, options['capped'])
self.assertEqual(4096, options['max'])
self.assertEqual((8192 * 4096), options['size'])
def test_expired_messages_not_returned_by_read(self):
queue = Queue(database='karait_test', queue='queue_test')
queue.write(Message({'foo': 1}), expire=0.1)
time.sleep(0.2)
self.assertEqual(0, len(queue.read()))
self.assertEqual(0, len(queue.read()))
# Make sure the meta._expired key is actually set.
collection = Connection().karait_test.queue_test
raw_message = collection.find_one({})
self.assertEqual(True, raw_message['_meta']['expired'])
def test_reading_from_the_queue_returns_a_message_object(self):
queue = Queue(database='karait_test', queue='queue_test')
write_message = Message()
write_message.apple = 5
write_message.banana = 6
write_message.inner_object = {'foo': 1, 'bar': 2}
queue.write(write_message)
read_message = queue.read()[0]
self.assertEqual(5, read_message.apple)
self.assertEqual(2, read_message.inner_object['bar'])
self.assertEqual(3, len(read_message.to_dictionary().keys()))
def test_queue_object_can_attach_to_a_collection_that_already_exists(self):
collection = Connection().karait_test.queue_test
collection.insert({
'routing_key': 'foobar',
'message': {
'apple': 3,
'banana': 5
},
'timestamp': 2523939,
'expire': 20393
})
queue = Queue(database='karait_test', queue='queue_test')
self.assertEqual(1, collection.find({}).count())
def test_setting_visibility_timeout_makes_a_message_unavailable_for_a_set_number_of_milliseconds(
self):
queue = Queue(database='karait_test', queue='queue_test')
queue.write(Message({'foo': 1}))
queue.write(Message({'foo': 2}))
queue.write(Message({'foo': 3}))
messages = queue.read(visibility_timeout=0.4)
self.assertEqual(3, len(messages))
messages = queue.read()
self.assertEqual(0, len(messages))
time.sleep(0.5)
messages = queue.read()
self.assertEqual(3, len(messages))
def test_writing_a_message_to_the_queue_populates_it_within_mongodb(self):
queue = Queue(database='karait_test', queue='queue_test')
message = Message()
message.apple = 5
message.banana = 6
message.inner_object = {'foo': 1, 'bar': 2}
queue.write(message)
collection = Connection().karait_test.queue_test
obj = collection.find_one({})
self.assertEqual(6, obj['banana'])
self.assertEqual(2, obj['inner_object']['bar'])
self.assertTrue(obj['_meta']['expire'])
self.assertTrue(obj['_meta']['timestamp'])
def test_writing_a_dictionary_to_the_queue_populates_it_within_mongodb(
self):
queue = Queue(database='karait_test', queue='queue_test')
queue.write({
'apple': 5,
'banana': 6,
'inner_object': {
'foo': 1,
'bar': 2
}
})
collection = Connection().karait_test.queue_test
obj = collection.find_one({})
self.assertEqual(6, obj['banana'])
self.assertEqual(2, obj['inner_object']['bar'])
self.assertTrue(obj['_meta']['expire'])
self.assertTrue(obj['_meta']['timestamp'])
from karait import Message, Queue
print('Starting Python process.')
queue = Queue()
while True:
messages = queue.read()
if messages and messages[0].action == 'shutdown_broadcast':
print('Terminating due to broadcast shutdown message.')
break
def test_message_with_expire_set_does_not_immediately_expire(self):
queue = Queue(database='karait_test', queue='queue_test')
queue.write(Message({'foo': 1}), expire=0.1)
self.assertEqual(1, len(queue.read()))
self.assertEqual(1, len(queue.read()))
