Example #1
0
class TestSocketManagerMessageHandling(unittest.TestCase):
    '''Test sending messages to the world and then to each of two agents,
    along with failure cases for each
    '''

    def on_alive(self, packet):
        self.alive_packet = packet
        self.socket_manager.open_channel(
            packet.sender_id, packet.assignment_id)

    def on_message(self, packet):
        self.message_packet = packet

    def on_worker_death(self, worker_id, assignment_id):
        self.dead_worker_id = worker_id
        self.dead_assignment_id = assignment_id

    def on_server_death(self):
        self.server_died = True

    def assertEqualBy(self, val_func, val, max_time):
        start_time = time.time()
        while val_func() != val:
            assert time.time() - start_time < max_time, \
                "Value was not attained in specified time"
            time.sleep(0.1)

    def setUp(self):
        self.fake_socket = MockSocket()
        time.sleep(0.3)
        self.agent1 = MockAgent(TEST_HIT_ID_1, TEST_ASSIGNMENT_ID_1,
                                TEST_WORKER_ID_1, TASK_GROUP_ID_1)
        self.agent2 = MockAgent(TEST_HIT_ID_2, TEST_ASSIGNMENT_ID_2,
                                TEST_WORKER_ID_2, TASK_GROUP_ID_1)
        self.alive_packet = None
        self.message_packet = None
        self.dead_worker_id = None
        self.dead_assignment_id = None
        self.server_died = False

        self.socket_manager = SocketManager(
            'https://127.0.0.1', 3030, self.on_alive, self.on_message,
            self.on_worker_death, TASK_GROUP_ID_1, 1, self.on_server_death)

    def tearDown(self):
        self.socket_manager.shutdown()
        self.fake_socket.close()

    @unittest.skipIf(os.environ.get('TRAVIS'), 'Travis fails socket setup')
    def test_alive_send_and_disconnect(self):
        acked_packet = None
        incoming_hb = None
        message_packet = None
        hb_count = 0

        def on_ack(*args):
            nonlocal acked_packet
            acked_packet = args[0]

        def on_hb(*args):
            nonlocal incoming_hb, hb_count
            incoming_hb = args[0]
            hb_count += 1

        def on_msg(*args):
            nonlocal message_packet
            message_packet = args[0]

        self.agent1.register_to_socket(self.fake_socket, on_ack, on_hb, on_msg)
        self.assertIsNone(acked_packet)
        self.assertIsNone(incoming_hb)
        self.assertIsNone(message_packet)
        self.assertEqual(hb_count, 0)

        # Assert alive is registered
        alive_id = self.agent1.send_alive()
        self.assertEqualBy(lambda: acked_packet is None, False, 8)
        self.assertIsNone(incoming_hb)
        self.assertIsNone(message_packet)
        self.assertIsNone(self.message_packet)
        self.assertEqualBy(lambda: self.alive_packet is None, False, 8)
        self.assertEqual(self.alive_packet.id, alive_id)
        self.assertEqual(acked_packet.id, alive_id, 'Alive was not acked')
        acked_packet = None

        # assert sending heartbeats actually works, and that heartbeats don't
        # get acked
        self.agent1.send_heartbeat()
        self.assertEqualBy(lambda: incoming_hb is None, False, 8)
        self.assertIsNone(acked_packet)
        self.assertGreater(hb_count, 0)

        # Test message send from agent
        test_message_text_1 = 'test_message_text_1'
        msg_id = self.agent1.send_message(test_message_text_1)
        self.assertEqualBy(lambda: self.message_packet is None, False, 8)
        self.assertEqualBy(lambda: acked_packet is None, False, 8)
        self.assertEqual(self.message_packet.id, acked_packet.id)
        self.assertEqual(self.message_packet.id, msg_id)
        self.assertEqual(self.message_packet.data['text'], test_message_text_1)

        # Test message send to agent
        manager_message_id = 'message_id_from_manager'
        test_message_text_2 = 'test_message_text_2'
        message_send_packet = Packet(
            manager_message_id, Packet.TYPE_MESSAGE,
            self.socket_manager.get_my_sender_id(), TEST_WORKER_ID_1,
            TEST_ASSIGNMENT_ID_1, test_message_text_2, 't2')
        self.socket_manager.queue_packet(message_send_packet)
        self.assertEqualBy(lambda: message_packet is None, False, 8)
        self.assertEqual(message_packet.id, manager_message_id)
        self.assertEqual(message_packet.data, test_message_text_2)
        self.assertIn(manager_message_id, self.socket_manager.packet_map)
        self.assertEqualBy(
            lambda: self.socket_manager.packet_map[manager_message_id].status,
            Packet.STATUS_ACK,
            6,
        )

        # Test agent disconnect
        self.agent1.always_beat = False
        self.assertEqualBy(lambda: self.dead_worker_id, TEST_WORKER_ID_1, 8)
        self.assertEqual(self.dead_assignment_id, TEST_ASSIGNMENT_ID_1)
        self.assertGreater(hb_count, 1)

    @unittest.skipIf(os.environ.get('TRAVIS'), 'Travis fails socket setup')
    def test_failed_ack_resend(self):
        '''Ensures when a message from the manager is dropped, it gets
        retried until it works as long as there hasn't been a disconnect
        '''
        acked_packet = None
        incoming_hb = None
        message_packet = None
        hb_count = 0

        def on_ack(*args):
            nonlocal acked_packet
            acked_packet = args[0]

        def on_hb(*args):
            nonlocal incoming_hb, hb_count
            incoming_hb = args[0]
            hb_count += 1

        def on_msg(*args):
            nonlocal message_packet
            message_packet = args[0]

        self.agent1.register_to_socket(self.fake_socket, on_ack, on_hb, on_msg)
        self.assertIsNone(acked_packet)
        self.assertIsNone(incoming_hb)
        self.assertIsNone(message_packet)
        self.assertEqual(hb_count, 0)

        # Assert alive is registered
        alive_id = self.agent1.send_alive()
        self.assertEqualBy(lambda: acked_packet is None, False, 8)
        self.assertIsNone(incoming_hb)
        self.assertIsNone(message_packet)
        self.assertIsNone(self.message_packet)
        self.assertEqualBy(lambda: self.alive_packet is None, False, 8)
        self.assertEqual(self.alive_packet.id, alive_id)
        self.assertEqual(acked_packet.id, alive_id, 'Alive was not acked')
        acked_packet = None

        # assert sending heartbeats actually works, and that heartbeats don't
        # get acked
        self.agent1.send_heartbeat()
        self.assertEqualBy(lambda: incoming_hb is None, False, 8)
        self.assertIsNone(acked_packet)
        self.assertGreater(hb_count, 0)

        # Test message send to agent
        manager_message_id = 'message_id_from_manager'
        test_message_text_2 = 'test_message_text_2'
        self.agent1.send_acks = False
        message_send_packet = Packet(
            manager_message_id, Packet.TYPE_MESSAGE,
            self.socket_manager.get_my_sender_id(), TEST_WORKER_ID_1,
            TEST_ASSIGNMENT_ID_1, test_message_text_2, 't2')
        self.socket_manager.queue_packet(message_send_packet)
        self.assertEqualBy(lambda: message_packet is None, False, 8)
        self.assertEqual(message_packet.id, manager_message_id)
        self.assertEqual(message_packet.data, test_message_text_2)
        self.assertIn(manager_message_id, self.socket_manager.packet_map)
        self.assertNotEqual(
            self.socket_manager.packet_map[manager_message_id].status,
            Packet.STATUS_ACK,
        )
        message_packet = None
        self.agent1.send_acks = True
        self.assertEqualBy(lambda: message_packet is None, False, 8)
        self.assertEqual(message_packet.id, manager_message_id)
        self.assertEqual(message_packet.data, test_message_text_2)
        self.assertIn(manager_message_id, self.socket_manager.packet_map)
        self.assertEqualBy(
            lambda: self.socket_manager.packet_map[manager_message_id].status,
            Packet.STATUS_ACK,
            6,
        )

    @unittest.skipIf(os.environ.get('TRAVIS'), 'Travis fails socket setup')
    def test_one_agent_disconnect_other_alive(self):
        acked_packet = None
        incoming_hb = None
        message_packet = None
        hb_count = 0

        def on_ack(*args):
            nonlocal acked_packet
            acked_packet = args[0]

        def on_hb(*args):
            nonlocal incoming_hb, hb_count
            incoming_hb = args[0]
            hb_count += 1

        def on_msg(*args):
            nonlocal message_packet
            message_packet = args[0]

        self.agent1.register_to_socket(self.fake_socket, on_ack, on_hb, on_msg)
        self.agent2.register_to_socket(self.fake_socket, on_ack, on_hb, on_msg)
        self.assertIsNone(acked_packet)
        self.assertIsNone(incoming_hb)
        self.assertIsNone(message_packet)
        self.assertEqual(hb_count, 0)

        # Assert alive is registered
        self.agent1.send_alive()
        self.agent2.send_alive()
        self.assertEqualBy(lambda: acked_packet is None, False, 8)
        self.assertIsNone(incoming_hb)
        self.assertIsNone(message_packet)

        # Start sending heartbeats
        self.agent1.send_heartbeat()
        self.agent2.send_heartbeat()

        # Kill second agent
        self.agent2.always_beat = False
        self.assertEqualBy(lambda: self.dead_worker_id, TEST_WORKER_ID_2, 8)
        self.assertEqual(self.dead_assignment_id, TEST_ASSIGNMENT_ID_2)

        # Run rest of tests

        # Test message send from agent
        test_message_text_1 = 'test_message_text_1'
        msg_id = self.agent1.send_message(test_message_text_1)
        self.assertEqualBy(lambda: self.message_packet is None, False, 8)
        self.assertEqualBy(lambda: acked_packet is None, False, 8)
        self.assertEqual(self.message_packet.id, acked_packet.id)
        self.assertEqual(self.message_packet.id, msg_id)
        self.assertEqual(self.message_packet.data['text'], test_message_text_1)

        # Test message send to agent
        manager_message_id = 'message_id_from_manager'
        test_message_text_2 = 'test_message_text_2'
        message_send_packet = Packet(
            manager_message_id, Packet.TYPE_MESSAGE,
            self.socket_manager.get_my_sender_id(), TEST_WORKER_ID_1,
            TEST_ASSIGNMENT_ID_1, test_message_text_2, 't2')
        self.socket_manager.queue_packet(message_send_packet)
        self.assertEqualBy(lambda: message_packet is None, False, 8)
        self.assertEqual(message_packet.id, manager_message_id)
        self.assertEqual(message_packet.data, test_message_text_2)
        self.assertIn(manager_message_id, self.socket_manager.packet_map)
        self.assertEqualBy(
            lambda: self.socket_manager.packet_map[manager_message_id].status,
            Packet.STATUS_ACK,
            6,
        )

        # Test agent disconnect
        self.agent1.always_beat = False
        self.assertEqualBy(lambda: self.dead_worker_id, TEST_WORKER_ID_1, 8)
        self.assertEqual(self.dead_assignment_id, TEST_ASSIGNMENT_ID_1)
Example #2
0
class TestSocketManagerRoutingFunctionality(unittest.TestCase):

    ID = 'ID'
    SENDER_ID = 'SENDER_ID'
    ASSIGNMENT_ID = 'ASSIGNMENT_ID'
    DATA = 'DATA'
    CONVERSATION_ID = 'CONVERSATION_ID'
    REQUIRES_ACK = True
    BLOCKING = False
    ACK_FUNCTION = 'ACK_FUNCTION'
    WORLD_ID = '[World_{}]'.format(TASK_GROUP_ID_1)

    def on_alive(self, packet):
        self.alive_packet = packet

    def on_message(self, packet):
        self.message_packet = packet

    def on_worker_death(self, worker_id, assignment_id):
        self.dead_worker_id = worker_id
        self.dead_assignment_id = assignment_id

    def on_server_death(self):
        self.server_died = True

    def setUp(self):
        self.AGENT_HEARTBEAT_PACKET = Packet(
            self.ID, Packet.TYPE_HEARTBEAT, self.SENDER_ID, self.WORLD_ID,
            self.ASSIGNMENT_ID, self.DATA, self.CONVERSATION_ID)

        self.AGENT_ALIVE_PACKET = Packet(
            MESSAGE_ID_1, Packet.TYPE_ALIVE, self.SENDER_ID, self.WORLD_ID,
            self.ASSIGNMENT_ID, self.DATA, self.CONVERSATION_ID)

        self.MESSAGE_SEND_PACKET_1 = Packet(
            MESSAGE_ID_2, Packet.TYPE_MESSAGE, self.WORLD_ID, self.SENDER_ID,
            self.ASSIGNMENT_ID, self.DATA, self.CONVERSATION_ID)

        self.MESSAGE_SEND_PACKET_2 = Packet(
            MESSAGE_ID_3, Packet.TYPE_MESSAGE, self.WORLD_ID, self.SENDER_ID,
            self.ASSIGNMENT_ID, self.DATA, self.CONVERSATION_ID,
            requires_ack=False)

        self.MESSAGE_SEND_PACKET_3 = Packet(
            MESSAGE_ID_4, Packet.TYPE_MESSAGE, self.WORLD_ID, self.SENDER_ID,
            self.ASSIGNMENT_ID, self.DATA, self.CONVERSATION_ID,
            blocking=False)

        self.fake_socket = MockSocket()
        time.sleep(0.3)
        self.alive_packet = None
        self.message_packet = None
        self.dead_worker_id = None
        self.dead_assignment_id = None
        self.server_died = False

        self.socket_manager = SocketManager(
            'https://127.0.0.1', self.fake_socket.port, self.on_alive,
            self.on_message, self.on_worker_death, TASK_GROUP_ID_1, 1,
            self.on_server_death)

    def tearDown(self):
        self.socket_manager.shutdown()
        self.fake_socket.close()

    @unittest.skipIf(os.environ.get('TRAVIS'), 'Travis fails socket setup')
    def test_init_state(self):
        '''Ensure all of the initial state of the socket_manager is ready'''
        self.assertEqual(self.socket_manager.server_url, 'https://127.0.0.1')
        self.assertEqual(self.socket_manager.port, self.fake_socket.port)
        self.assertEqual(self.socket_manager.alive_callback, self.on_alive)
        self.assertEqual(self.socket_manager.message_callback, self.on_message)
        self.assertEqual(self.socket_manager.socket_dead_callback,
                         self.on_worker_death)
        self.assertEqual(self.socket_manager.task_group_id, TASK_GROUP_ID_1)
        self.assertEqual(self.socket_manager.missed_pongs,
                         1 + (1 / SocketManager.HEARTBEAT_RATE))
        self.assertIsNotNone(self.socket_manager.ws)
        self.assertTrue(self.socket_manager.keep_running)
        self.assertIsNotNone(self.socket_manager.listen_thread)
        self.assertDictEqual(self.socket_manager.queues, {})
        self.assertDictEqual(self.socket_manager.threads, {})
        self.assertDictEqual(self.socket_manager.run, {})
        self.assertDictEqual(self.socket_manager.last_sent_heartbeat_time, {})
        self.assertDictEqual(self.socket_manager.last_received_heartbeat, {})
        self.assertDictEqual(self.socket_manager.pongs_without_heartbeat, {})
        self.assertDictEqual(self.socket_manager.packet_map, {})
        self.assertTrue(self.socket_manager.alive)
        self.assertFalse(self.socket_manager.is_shutdown)
        self.assertEqual(self.socket_manager.get_my_sender_id(), self.WORLD_ID)

    @unittest.skipIf(os.environ.get('TRAVIS'), 'Travis fails socket setup')
    def test_needed_heartbeat(self):
        '''Ensure needed heartbeat sends heartbeats at the right time'''
        self.socket_manager._safe_send = mock.MagicMock()
        connection_id = self.AGENT_HEARTBEAT_PACKET.get_sender_connection_id()

        # Ensure no failure under uninitialized cases
        self.socket_manager._send_needed_heartbeat(connection_id)
        self.socket_manager.last_received_heartbeat[connection_id] = None
        self.socket_manager._send_needed_heartbeat(connection_id)

        self.socket_manager._safe_send.assert_not_called()

        # assert not called when called too recently
        self.socket_manager.last_received_heartbeat[connection_id] = \
            self.AGENT_HEARTBEAT_PACKET
        self.socket_manager.last_sent_heartbeat_time[connection_id] = \
            time.time() + 10

        self.socket_manager._send_needed_heartbeat(connection_id)

        self.socket_manager._safe_send.assert_not_called()

        # Assert called when supposed to
        self.socket_manager.last_sent_heartbeat_time[connection_id] = \
            time.time() - SocketManager.HEARTBEAT_RATE
        self.assertGreater(
            time.time() -
            self.socket_manager.last_sent_heartbeat_time[connection_id],
            SocketManager.HEARTBEAT_RATE)
        self.socket_manager._send_needed_heartbeat(connection_id)
        self.assertLess(
            time.time() -
            self.socket_manager.last_sent_heartbeat_time[connection_id],
            SocketManager.HEARTBEAT_RATE)
        used_packet_json = self.socket_manager._safe_send.call_args[0][0]
        used_packet_dict = json.loads(used_packet_json)
        self.assertEqual(
            used_packet_dict['type'], data_model.SOCKET_ROUTE_PACKET_STRING)
        used_packet = Packet.from_dict(used_packet_dict['content'])
        self.assertNotEqual(self.AGENT_HEARTBEAT_PACKET.id, used_packet.id)
        self.assertEqual(used_packet.type, Packet.TYPE_HEARTBEAT)
        self.assertEqual(used_packet.sender_id, self.WORLD_ID)
        self.assertEqual(used_packet.receiver_id, self.SENDER_ID)
        self.assertEqual(used_packet.assignment_id, self.ASSIGNMENT_ID)
        self.assertEqual(used_packet.data, '')
        self.assertEqual(used_packet.conversation_id, self.CONVERSATION_ID)
        self.assertEqual(used_packet.requires_ack, False)
        self.assertEqual(used_packet.blocking, False)

    @unittest.skipIf(os.environ.get('TRAVIS'), 'Travis fails socket setup')
    def test_ack_send(self):
        '''Ensure acks are being properly created and sent'''
        self.socket_manager._safe_send = mock.MagicMock()
        self.socket_manager._send_ack(self.AGENT_ALIVE_PACKET)
        used_packet_json = self.socket_manager._safe_send.call_args[0][0]
        used_packet_dict = json.loads(used_packet_json)
        self.assertEqual(
            used_packet_dict['type'], data_model.SOCKET_ROUTE_PACKET_STRING)
        used_packet = Packet.from_dict(used_packet_dict['content'])
        self.assertEqual(self.AGENT_ALIVE_PACKET.id, used_packet.id)
        self.assertEqual(used_packet.type, Packet.TYPE_ACK)
        self.assertEqual(used_packet.sender_id, self.WORLD_ID)
        self.assertEqual(used_packet.receiver_id, self.SENDER_ID)
        self.assertEqual(used_packet.assignment_id, self.ASSIGNMENT_ID)
        self.assertEqual(used_packet.conversation_id, self.CONVERSATION_ID)
        self.assertEqual(used_packet.requires_ack, False)
        self.assertEqual(used_packet.blocking, False)
        self.assertEqual(self.AGENT_ALIVE_PACKET.status, Packet.STATUS_SENT)

    def _send_packet_in_background(self, packet, send_time):
        '''creates a thread to handle waiting for a packet send'''
        def do_send():
            self.socket_manager._send_packet(
                packet, packet.get_receiver_connection_id(), send_time
            )
            self.sent = True

        send_thread = threading.Thread(target=do_send, daemon=True)
        send_thread.start()
        time.sleep(0.02)

    @unittest.skipIf(os.environ.get('TRAVIS'), 'Travis fails socket setup')
    def test_blocking_ack_packet_send(self):
        '''Checks to see if ack'ed blocking packets are working properly'''
        self.socket_manager._safe_send = mock.MagicMock()
        self.socket_manager._safe_put = mock.MagicMock()
        self.sent = False

        # Test a blocking acknowledged packet
        send_time = time.time()
        self.assertEqual(self.MESSAGE_SEND_PACKET_1.status, Packet.STATUS_INIT)
        self._send_packet_in_background(self.MESSAGE_SEND_PACKET_1, send_time)
        self.assertEqual(self.MESSAGE_SEND_PACKET_1.status, Packet.STATUS_SENT)
        self.socket_manager._safe_send.assert_called_once()

        connection_id = self.MESSAGE_SEND_PACKET_1.get_receiver_connection_id()
        self.socket_manager._safe_put.assert_called_once_with(
            connection_id, (send_time, self.MESSAGE_SEND_PACKET_1))
        self.assertTrue(self.sent)

        self.socket_manager._safe_send.reset_mock()
        self.socket_manager._safe_put.reset_mock()

        # Send it again - end outcome should be a call to send only
        # with sent set
        self.MESSAGE_SEND_PACKET_1.status = Packet.STATUS_ACK
        self._send_packet_in_background(self.MESSAGE_SEND_PACKET_1, send_time)
        self.socket_manager._safe_send.assert_not_called()
        self.socket_manager._safe_put.assert_not_called()

    @unittest.skipIf(os.environ.get('TRAVIS'), 'Travis fails socket setup')
    def test_non_blocking_ack_packet_send(self):
        '''Checks to see if ack'ed non-blocking packets are working'''
        self.socket_manager._safe_send = mock.MagicMock()
        self.socket_manager._safe_put = mock.MagicMock()
        self.sent = False

        # Test a blocking acknowledged packet
        send_time = time.time()
        self.assertEqual(self.MESSAGE_SEND_PACKET_3.status, Packet.STATUS_INIT)
        self._send_packet_in_background(self.MESSAGE_SEND_PACKET_3, send_time)
        self.assertEqual(self.MESSAGE_SEND_PACKET_3.status, Packet.STATUS_SENT)
        self.socket_manager._safe_send.assert_called_once()
        self.socket_manager._safe_put.assert_called_once()
        self.assertTrue(self.sent)

        call_args = self.socket_manager._safe_put.call_args[0]
        connection_id = call_args[0]
        queue_item = call_args[1]
        self.assertEqual(
            connection_id,
            self.MESSAGE_SEND_PACKET_3.get_receiver_connection_id())
        expected_send_time = \
            send_time + SocketManager.ACK_TIME[self.MESSAGE_SEND_PACKET_3.type]
        self.assertAlmostEqual(queue_item[0], expected_send_time, places=2)
        self.assertEqual(queue_item[1], self.MESSAGE_SEND_PACKET_3)
        used_packet_json = self.socket_manager._safe_send.call_args[0][0]
        used_packet_dict = json.loads(used_packet_json)
        self.assertEqual(
            used_packet_dict['type'], data_model.SOCKET_ROUTE_PACKET_STRING)
        self.assertDictEqual(used_packet_dict['content'],
                             self.MESSAGE_SEND_PACKET_3.as_dict())

    @unittest.skipIf(os.environ.get('TRAVIS'), 'Travis fails socket setup')
    def test_non_ack_packet_send(self):
        '''Checks to see if non-ack'ed packets are working'''
        self.socket_manager._safe_send = mock.MagicMock()
        self.socket_manager._safe_put = mock.MagicMock()
        self.sent = False

        # Test a blocking acknowledged packet
        send_time = time.time()
        self.assertEqual(self.MESSAGE_SEND_PACKET_2.status, Packet.STATUS_INIT)
        self._send_packet_in_background(self.MESSAGE_SEND_PACKET_2, send_time)
        self.assertEqual(self.MESSAGE_SEND_PACKET_2.status, Packet.STATUS_SENT)
        self.socket_manager._safe_send.assert_called_once()
        self.socket_manager._safe_put.assert_not_called()
        self.assertTrue(self.sent)

        used_packet_json = self.socket_manager._safe_send.call_args[0][0]
        used_packet_dict = json.loads(used_packet_json)
        self.assertEqual(
            used_packet_dict['type'], data_model.SOCKET_ROUTE_PACKET_STRING)
        self.assertDictEqual(used_packet_dict['content'],
                             self.MESSAGE_SEND_PACKET_2.as_dict())

    @unittest.skipIf(os.environ.get('TRAVIS'), 'Travis fails socket setup')
    def test_simple_packet_channel_management(self):
        '''Ensure that channels are created, managed, and then removed
        as expected
        '''
        self.socket_manager._safe_put = mock.MagicMock()
        use_packet = self.MESSAGE_SEND_PACKET_1
        worker_id = use_packet.receiver_id
        assignment_id = use_packet.assignment_id

        # Open a channel and assert it is there
        self.socket_manager.open_channel(worker_id, assignment_id)
        time.sleep(0.1)
        connection_id = use_packet.get_receiver_connection_id()
        self.assertTrue(self.socket_manager.run[connection_id])

        self.assertIsNotNone(self.socket_manager.queues[connection_id])
        self.assertEqual(
            self.socket_manager.last_sent_heartbeat_time[connection_id], 0)
        self.assertEqual(
            self.socket_manager.pongs_without_heartbeat[connection_id], 0)
        self.assertIsNone(
            self.socket_manager.last_received_heartbeat[connection_id])
        self.assertTrue(self.socket_manager.socket_is_open(connection_id))
        self.assertFalse(self.socket_manager.socket_is_open(FAKE_ID))

        # Send a bad packet, ensure it is ignored
        resp = self.socket_manager.queue_packet(self.AGENT_ALIVE_PACKET)
        self.socket_manager._safe_put.assert_not_called()
        self.assertFalse(resp)
        self.assertNotIn(self.AGENT_ALIVE_PACKET.id,
                         self.socket_manager.packet_map)

        # Send a packet to an open socket, ensure it got queued
        resp = self.socket_manager.queue_packet(use_packet)
        self.socket_manager._safe_put.assert_called_once()
        self.assertIn(use_packet.id, self.socket_manager.packet_map)
        self.assertTrue(resp)

        # Assert we can get the status of a packet in the map, but not
        # existing doesn't throw an error
        self.assertEqual(self.socket_manager.get_status(use_packet.id),
                         use_packet.status)
        self.assertEqual(self.socket_manager.get_status(FAKE_ID),
                         Packet.STATUS_NONE)

        # Assert that closing a thread does the correct cleanup work
        self.socket_manager.close_channel(connection_id)
        time.sleep(0.2)
        self.assertFalse(self.socket_manager.run[connection_id])
        self.assertNotIn(connection_id, self.socket_manager.queues)
        self.assertNotIn(connection_id, self.socket_manager.threads)
        self.assertNotIn(use_packet.id, self.socket_manager.packet_map)

        # Assert that opening multiple threads and closing them is possible
        self.socket_manager.open_channel(worker_id, assignment_id)
        self.socket_manager.open_channel(worker_id + '2', assignment_id)
        time.sleep(0.1)
        self.assertEqual(len(self.socket_manager.queues), 2)
        self.socket_manager.close_all_channels()
        time.sleep(0.1)
        self.assertEqual(len(self.socket_manager.queues), 0)

    @unittest.skipIf(os.environ.get('TRAVIS'), 'Travis fails socket setup')
    def test_safe_put(self):
        '''Test safe put and queue retrieval mechanisms'''
        self.socket_manager._send_packet = mock.MagicMock()
        use_packet = self.MESSAGE_SEND_PACKET_1
        worker_id = use_packet.receiver_id
        assignment_id = use_packet.assignment_id
        connection_id = use_packet.get_receiver_connection_id()

        # Open a channel and assert it is there
        self.socket_manager.open_channel(worker_id, assignment_id)
        send_time = time.time()
        self.socket_manager._safe_put(connection_id, (send_time, use_packet))

        # Wait for the sending thread to try to pull the packet from the queue
        time.sleep(0.3)

        # Ensure the right packet was popped and sent.
        self.socket_manager._send_packet.assert_called_once()
        call_args = self.socket_manager._send_packet.call_args[0]
        self.assertEqual(use_packet, call_args[0])
        self.assertEqual(connection_id, call_args[1])
        self.assertEqual(send_time, call_args[2])

        self.socket_manager.close_all_channels()
        time.sleep(0.1)
        self.socket_manager._safe_put(connection_id, (send_time, use_packet))
        self.assertEqual(use_packet.status, Packet.STATUS_FAIL)