Example #1
0
File: kytosd.py Project: kytos/kyco
def async_main():
    """Start main Kytos Daemon with asyncio loop."""
    def stop_controller(controller):
        """Stop the controller before quitting."""
        loop = asyncio.get_event_loop()

        # If stop() hangs, old ctrl+c behaviour will be restored
        loop.remove_signal_handler(signal.SIGINT)
        loop.remove_signal_handler(signal.SIGTERM)

        # disable_threadpool_exit()

        controller.log.info("Stopping Kytos controller...")
        controller.stop()

    async def start_shell_async():
        """Run the shell inside a thread and stop controller when done."""
        _start_shell = functools.partial(start_shell, controller)
        data = await loop.run_in_executor(executor, _start_shell)
        executor.shutdown()
        stop_controller(controller)
        return data

    config = KytosConfig()
    controller = Controller(config.options['daemon'])

    loop = asyncio.get_event_loop()
    kill_handler = functools.partial(stop_controller, controller)
    loop.add_signal_handler(signal.SIGINT, kill_handler)
    loop.add_signal_handler(signal.SIGTERM, kill_handler)

    if controller.options.debug:
        loop.set_debug(True)

    if controller.options.foreground:
        try:
            controller.start()
        except SystemExit as exc:
            controller.log.error(exc)
            controller.log.info("Kytos start aborted.")
            sys.exit()

        executor = ThreadPoolExecutor(max_workers=1)
        loop.create_task(start_shell_async())
    else:
        with daemon.DaemonContext():
            try:
                controller.start()
            except SystemExit as exc:
                controller.log.error(exc)
                controller.log.info("Kytos daemon start aborted.")
                sys.exit()
Example #2
0
def new_controller(options=None):
    """Instantiate a Kytos Controller.

    Args:
        options (KytosConfig.options): options generated by KytosConfig

    Returns:
        controller: Running Controler

    """
    if options is None:
        options = get_config().options['daemon']
    controller = Controller(options)
    controller.start()
    time.sleep(0.1)
    return controller
Example #3
0
File: helper.py Project: kytos/kyco
def new_controller(options=None):
    """Instantiate a Kytos Controller.

    Args:
        options (KytosConfig.options): options generated by KytosConfig

    Returns:
        controller: Running Controler

    """
    if options is None:
        options = get_config().options['daemon']
    controller = Controller(options)
    controller.start()
    time.sleep(0.1)
    return controller
Example #4
0
File: kytosd.py Project: kytos/kyco
def main():
    """Start main Kytos Daemon."""
    def stop_controller(signum, frame):     # pylint: disable=unused-argument
        """Stop the controller before quitting."""
        if controller:
            print('Stopping controller...')

            # If stop() hangs, old ctrl+c behaviour will be restored
            signal.signal(signal.SIGINT, sigint_handler)
            signal.signal(signal.SIGTERM, sigkill_handler)

            controller.stop()

    sigint_handler = signal.signal(signal.SIGINT, stop_controller)
    sigkill_handler = signal.signal(signal.SIGTERM, stop_controller)

    config = KytosConfig()
    controller = Controller(config.options['daemon'])

    if controller.options.foreground:
        try:
            controller.start()
        except SystemExit as exc:
            controller.log.error(exc)
            controller.log.info("Kytos start aborted.")
            sys.exit()

        start_shell(controller)

        # Stop Kytos controller after user exits shell
        controller.stop()
    else:
        with daemon.DaemonContext():
            try:
                controller.start()
            except SystemExit as exc:
                controller.log.error(exc)
                controller.log.info("Kytos daemon start aborted.")
                sys.exit()
Example #5
0
def main():
    """Start main Kytos Daemon."""
    def stop_controller(signum, frame):  # pylint: disable=unused-argument
        """Stop the controller before quitting."""
        if controller:
            print('Stopping controller...')

            # If stop() hangs, old ctrl+c behaviour will be restored
            signal.signal(signal.SIGINT, sigint_handler)
            signal.signal(signal.SIGTERM, sigkill_handler)

            controller.stop()

    sigint_handler = signal.signal(signal.SIGINT, stop_controller)
    sigkill_handler = signal.signal(signal.SIGTERM, stop_controller)

    config = KytosConfig()
    controller = Controller(config.options['daemon'])

    if controller.options.foreground:
        try:
            controller.start()
        except SystemExit as exc:
            controller.log.error(exc)
            controller.log.info("Kytos start aborted.")
            sys.exit()

        start_shell(controller)

        # Stop Kytos controller after user exits shell
        controller.stop()
    else:
        with daemon.DaemonContext():
            try:
                controller.start()
            except SystemExit as exc:
                controller.log.error(exc)
                controller.log.info("Kytos daemon start aborted.")
                sys.exit()
Example #6
0
class TestController(TestCase):
    """Controller tests."""
    def setUp(self):
        """Instantiate a controller."""

        self.loop = asyncio.new_event_loop()
        asyncio.set_event_loop(self.loop)

        self.options = KytosConfig().options['daemon']
        self.napps_manager = Mock()
        self.controller = Controller(self.options, loop=self.loop)
        self.controller.napps_manager = self.napps_manager
        self.controller.log = Mock()

    def test_configuration_endpoint(self):
        """Should return the attribute options as json."""
        serializable_options = vars(self.options)
        expected = json.dumps(serializable_options)
        actual = self.controller.configuration_endpoint()
        self.assertEqual(expected, actual)

    @staticmethod
    @patch('kytos.core.controller.LogManager')
    @patch('kytos.core.logs.Path')
    def test_websocket_log_usage(path, log_manager):
        """Assert that the web socket log is used."""
        loop = asyncio.new_event_loop()
        asyncio.set_event_loop(None)

        # Save original state
        handlers_bak = copy(logging.root.handlers)

        # Minimum to instantiate Controller
        options = Mock(napps='')
        path.return_value.exists.return_value = False
        controller = Controller(options, loop=loop)

        # The test
        controller.enable_logs()
        log_manager.enable_websocket.assert_called_once()

        # Restore original state
        logging.root.handlers = handlers_bak

    @patch('kytos.core.api_server.APIServer.remove_napp_endpoints')
    def test_unload_napp_listener(self, _):
        """Call NApp shutdown listener on unload."""
        username, napp_name = 'test', 'napp'
        listener = self._add_napp(username, napp_name)

        listener.assert_not_called()
        self.controller.unload_napp(username, napp_name)
        listener.assert_called()

    @patch('kytos.core.api_server.APIServer.remove_napp_endpoints')
    def test_unload_napp_other_listener(self, _):
        """Should not call other NApps' shutdown listener on unload."""
        username, napp_name = 'test', 'napp1'
        self._add_napp(username, napp_name)
        other_listener = self._add_napp('test', 'napp2')

        self.controller.unload_napp(username, napp_name)
        other_listener.assert_not_called()

    def _add_napp(self, username, napp_name):
        """Add a mocked NApp to the controller."""
        napp_id = f'{username}/{napp_name}'
        event_name = f'kytos/core.shutdown.{napp_id}'
        listener = Mock()
        self.controller.events_listeners[event_name] = [listener]
        napp = Mock(_listeners={})
        self.controller.napps[(username, napp_name)] = napp
        return listener

    def test_deprecation_warning(self):
        """Deprecated method should suggest @rest decorator."""
        with warnings.catch_warnings(record=True) as wrngs:
            warnings.simplefilter("always")  # trigger all warnings
            self.controller.register_rest_endpoint('x', lambda x: x, ['GET'])
            self.assertEqual(1, len(wrngs))
            warning = wrngs[0]
            self.assertEqual(warning.category, DeprecationWarning)
            self.assertIn('@rest', str(warning.message))

    def test_loggers(self):
        """Test that all controller loggers are under kytos
        hierarchy logger.
        """
        loggers = self.controller.loggers()
        for logger in loggers:
            self.assertTrue(logger.name.startswith("kytos"))

    def test_debug_on(self):
        """Test the enable debug feature."""
        # Enable debug for kytos.core
        self.controller.toggle_debug("kytos.core")
        self._test_debug_result()

    def test_debug_on_defaults(self):
        """Test the enable debug feature. Test the default parameter"""
        # Enable debug for kytos.core
        self.controller.toggle_debug("kytos.core")
        self._test_debug_result()

    def _test_debug_result(self):
        """Verify if the loggers have level debug."""
        loggers = self.controller.loggers()
        for logger in loggers:
            # Check if all kytos.core loggers are in DEBUG mode.
            # All the rest must remain the same.
            if logger.name.startswith("kytos.core"):
                self.assertTrue(logger.getEffectiveLevel(), logging.DEBUG)
            else:
                self.assertTrue(logger.getEffectiveLevel(), logging.CRITICAL)

    def test_debug_off(self):
        """Test the disable debug feature"""
        # Fist we enable the debug
        self.controller.toggle_debug("kytos.core")
        # ... then we disable the debug for the test
        self.controller.toggle_debug("kytos.core")
        loggers = self.controller.loggers()
        for logger in loggers:
            self.assertTrue(logger.getEffectiveLevel(), logging.CRITICAL)

    @patch.object(LogManager, 'load_config_file')
    def test_debug_no_name(self, mock_load_config_file):
        """Test the enable debug logger with default levels."""
        # Mock the LogManager that loads the default Loggers
        self.controller.toggle_debug()
        self._test_debug_result()

        mock_load_config_file.assert_called_once()

    @patch.object(LogManager, 'load_config_file')
    def test_debug_empty_name(self, mock_load_config_file):
        """Test the enable debug logger with default levels."""
        # Mock the LogManager that loads the default Loggers
        self.controller.toggle_debug('')
        self._test_debug_result()

        mock_load_config_file.assert_called_once()

    def test_debug_wrong_name(self):
        """Test the enable debug logger with wrong name."""
        self.assertRaises(ValueError,
                          self.controller.toggle_debug,
                          name="foobar")

    @patch('kytos.core.controller.Controller.start_controller')
    @patch('kytos.core.controller.Controller.create_pidfile')
    @patch('kytos.core.controller.Controller.enable_logs')
    def test_start(self, *args):
        """Test activate method."""
        (mock_enable_logs, mock_create_pidfile, mock_start_controller) = args
        self.controller.start()

        mock_enable_logs.assert_called()
        mock_create_pidfile.assert_called()
        mock_start_controller.assert_called()

    @patch('os.getpid')
    @patch('kytos.core.controller.atexit')
    def test_create_pidfile(self, *args):
        """Test activate method."""
        (_, mock_getpid) = args
        mock_getpid.return_value = 2
        with tempfile.NamedTemporaryFile() as tmp_file:
            tmp_file.write(b'4194305')  # pid_max +1
            tmp_file.seek(0)
            self.controller.options.pidfile = tmp_file.name

            self.controller.create_pidfile()

            pid = tmp_file.read()
            self.assertEqual(pid, b'2')

    @staticmethod
    @patch('kytos.core.controller.KytosServer')
    @patch('kytos.core.controller.Controller.app_event_handler')
    @patch('kytos.core.controller.Controller.msg_out_event_handler')
    @patch('kytos.core.controller.Controller.msg_in_event_handler')
    @patch('kytos.core.controller.Controller.raw_event_handler')
    @patch('kytos.core.controller.Controller.load_napps')
    @patch('kytos.core.controller.Controller.pre_install_napps')
    def test_start_controller(*args):
        """Test activate method."""
        (mock_pre_install_napps, mock_load_napps, mock_raw_event_handler,
         mock_msg_in_event_handler, mock_msg_out_event_handler,
         mock_app_event_handler, _) = args

        napp = MagicMock()
        loop = MagicMock()
        options = KytosConfig().options['daemon']
        options.napps_pre_installed = [napp]
        controller = Controller(options, loop=loop)
        controller.log = Mock()

        controller.start_controller()

        controller.server.serve_forever.assert_called()
        calls = [
            call(mock_raw_event_handler.return_value),
            call(mock_msg_in_event_handler.return_value),
            call(mock_msg_out_event_handler.return_value),
            call(mock_app_event_handler.return_value)
        ]
        loop.create_task.assert_has_calls(calls)
        mock_pre_install_napps.assert_called_with([napp])
        mock_load_napps.assert_called()

    @patch('kytos.core.controller.Controller.__init__')
    @patch('kytos.core.controller.Controller.start')
    @patch('kytos.core.controller.Controller.stop')
    def test_restart(self, *args):
        """Test restart method."""
        (mock_stop, mock_start, mock_init) = args
        self.controller.started_at = 1

        graceful = True
        self.controller.restart(graceful)

        mock_stop.assert_called_with(graceful)
        mock_init.assert_called_with(self.controller.options)
        mock_start.assert_called_with(restart=True)

    @patch('kytos.core.controller.Controller.stop_controller')
    def test_stop(self, mock_stop_controller):
        """Test stop method."""
        self.controller.started_at = 1

        graceful = True
        self.controller.stop(graceful)

        mock_stop_controller.assert_called_with(graceful)

    @patch('kytos.core.controller.Controller.unload_napps')
    @patch('kytos.core.controller.KytosBuffers')
    def test_stop_controller(self, *args):
        """Test stop_controller method."""
        (_, mock_unload_napps) = args
        server = MagicMock()
        buffers = MagicMock()
        api_server = MagicMock()
        napp_dir_listener = MagicMock()
        pool = MagicMock()
        self.controller.server = server
        self.controller.buffers = buffers
        self.controller.api_server = api_server
        self.controller.napp_dir_listener = napp_dir_listener
        self.controller._pool = pool

        self.controller.stop_controller()

        buffers.send_stop_signal.assert_called()
        api_server.stop_api_server.assert_called()
        napp_dir_listener.stop.assert_called()
        pool.shutdown.assert_called()
        mock_unload_napps.assert_called()
        server.shutdown.assert_called()

    def test_status(self):
        """Test status method."""
        status_1 = self.controller.status()
        self.controller.started_at = 1
        status_2 = self.controller.status()

        self.assertEqual(status_1, 'Stopped')
        self.assertEqual(status_2, 'Running since 1')

    @patch('kytos.core.controller.now')
    def test_uptime(self, mock_now):
        """Test uptime method."""
        mock_now.return_value = 11

        uptime_1 = self.controller.uptime()
        self.controller.started_at = 1
        uptime_2 = self.controller.uptime()

        self.assertEqual(uptime_1, 0)
        self.assertEqual(uptime_2, 10)

    def test_metadata_endpoint(self):
        """Test metadata_endpoint method."""
        metadata = self.controller.metadata_endpoint()
        json_metadata = json.loads(metadata)

        expected_keys = [
            '__version__', '__author__', '__license__', '__url__',
            '__description__'
        ]
        self.assertEqual(list(json_metadata.keys()), expected_keys)

    def test_notify_listeners(self):
        """Test notify_listeners method."""
        method = MagicMock()
        self.controller.events_listeners = {'kytos/any': [method]}

        event = MagicMock()
        event.name = 'kytos/any'
        self.controller.notify_listeners(event)

        method.assert_called_with(event)

    def test_get_interface_by_id__not_interface(self):
        """Test get_interface_by_id method when interface does not exist."""
        resp_interface = self.controller.get_interface_by_id(None)

        self.assertIsNone(resp_interface)

    def test_get_interface_by_id__not_switch(self):
        """Test get_interface_by_id method when switch does not exist."""
        interface = MagicMock()
        switch = MagicMock()
        switch.interfaces = {123: interface}
        self.controller.switches = {'00:00:00:00:00:00:00:02': switch}

        interface_id = '00:00:00:00:00:00:00:01:123'
        resp_interface = self.controller.get_interface_by_id(interface_id)

        self.assertIsNone(resp_interface)

    def test_get_interface_by_id(self):
        """Test get_interface_by_id method."""
        interface = MagicMock()
        switch = MagicMock()
        switch.interfaces = {123: interface}
        self.controller.switches = {'00:00:00:00:00:00:00:01': switch}

        interface_id = '00:00:00:00:00:00:00:01:123'
        resp_interface = self.controller.get_interface_by_id(interface_id)

        self.assertEqual(resp_interface, interface)

    def test_get_switch_by_dpid(self):
        """Test get_switch_by_dpid method."""
        dpid = '00:00:00:00:00:00:00:01'
        switch = MagicMock(dpid=dpid)
        self.controller.switches = {dpid: switch}

        resp_switch = self.controller.get_switch_by_dpid(dpid)

        self.assertEqual(resp_switch, switch)

    def test_get_switch_or_create__exists(self):
        """Test status_api method when switch exists."""
        dpid = '00:00:00:00:00:00:00:01'
        switch = MagicMock(dpid=dpid)
        self.controller.switches = {dpid: switch}

        connection = MagicMock()
        resp_switch = self.controller.get_switch_or_create(dpid, connection)

        self.assertEqual(resp_switch, switch)

    def test_get_switch_or_create__not_exists(self):
        """Test status_api method when switch does not exist."""
        self.controller.switches = {}

        dpid = '00:00:00:00:00:00:00:01'
        connection = MagicMock()
        switch = self.controller.get_switch_or_create(dpid, connection)

        expected_switches = {'00:00:00:00:00:00:00:01': switch}
        self.assertEqual(self.controller.switches, expected_switches)

    def test_create_or_update_connection(self):
        """Test create_or_update_connection method."""
        self.controller.connections = {}

        connection = MagicMock()
        connection.id = '123'
        self.controller.create_or_update_connection(connection)

        self.assertEqual(self.controller.connections, {'123': connection})

    def test_get_connection_by_id(self):
        """Test get_connection_by_id method."""
        connection = MagicMock()
        connection.id = '123'
        self.controller.connections = {connection.id: connection}

        resp_connection = self.controller.get_connection_by_id('123')

        self.assertEqual(resp_connection, connection)

    def test_remove_connection(self):
        """Test remove_connection method."""
        connection = MagicMock()
        connection.id = '123'
        self.controller.connections = {connection.id: connection}

        self.controller.remove_connection(connection)

        self.assertEqual(self.controller.connections, {})

    def test_remove_switch(self):
        """Test remove_switch method."""
        switch = MagicMock()
        switch.dpid = '00:00:00:00:00:00:00:01'
        self.controller.switches = {switch.dpid: switch}

        self.controller.remove_switch(switch)

        self.assertEqual(self.controller.switches, {})

    def test_remove_switch__error(self):
        """Test remove_switch method to error case."""
        switch_1 = MagicMock()
        switch_2 = MagicMock()
        switch_1.dpid = '00:00:00:00:00:00:00:01'
        switch_2.dpid = '00:00:00:00:00:00:00:02'
        self.controller.switches = {switch_1.dpid: switch_1}

        self.controller.remove_switch(switch_2)

        self.assertEqual(self.controller.switches, {switch_1.dpid: switch_1})

    def test_new_connection(self):
        """Test new_connection method."""
        self.controller.connections = {}

        connection = MagicMock()
        connection.id = '123'
        event = MagicMock()
        event.source = connection
        self.controller.new_connection(event)

        self.assertEqual(self.controller.connections, {'123': connection})

    def test_add_new_switch(self):
        """Test add_new_switch method."""
        self.controller.switches = {}

        switch = MagicMock()
        switch.dpid = '00:00:00:00:00:00:00:01'
        self.controller.add_new_switch(switch)

        expected_switches = {'00:00:00:00:00:00:00:01': switch}
        self.assertEqual(self.controller.switches, expected_switches)

    @patch('kytos.core.controller.module_from_spec')
    @patch('kytos.core.controller.spec_from_file_location')
    def test_import_napp(self, *args):
        """Test _import_napp method."""
        (mock_spec_from_file, mock_module_from_spec) = args
        napp_spec = MagicMock()
        napp_spec.name = 'spec_name'
        mock_spec_from_file.return_value = napp_spec
        napp_module = MagicMock()
        mock_module_from_spec.return_value = napp_module

        self.controller.options.napps = 'napps'
        self.controller._import_napp('kytos', 'napp')

        self.assertEqual(sys.modules[napp_spec.name], napp_module)
        mock_spec_from_file.assert_called_with('napps.kytos.napp.main',
                                               'napps/kytos/napp/main.py')
        napp_spec.loader.exec_module.assert_called_with(napp_module)

    def test_load_napp__loaded(self):
        """Test load_napp method when napp is already loaded."""
        napp = MagicMock()
        self.controller.napps = {('kytos', 'napp'): napp}

        self.controller.load_napp('kytos', 'napp')

        self.assertEqual(self.controller.napps, {('kytos', 'napp'): napp})

    @patch('kytos.core.controller.Controller._import_napp')
    def test_load_napp__module_not_found(self, mock_import_napp):
        """Test load_napp method when module is not found."""
        mock_import_napp.side_effect = ModuleNotFoundError
        self.controller.napps = {}

        self.controller.load_napp('kytos', 'napp')

        self.assertEqual(self.controller.napps, {})

    @patch('kytos.core.controller.Controller._import_napp')
    def test_load_napp__file_not_found(self, mock_import_napp):
        """Test load_napp method when file is not found."""
        mock_import_napp.side_effect = FileNotFoundError
        self.controller.napps = {}

        self.controller.load_napp('kytos', 'napp')

        self.assertEqual(self.controller.napps, {})

    @patch('kytos.core.api_server.APIServer.register_napp_endpoints')
    @patch('kytos.core.controller.Controller._import_napp')
    def test_load_napp__error(self, *args):
        """Test load_napp method when an error is raised on napp module
           attribution."""
        (mock_import_napp, _) = args
        self.controller.napps = {}

        module = MagicMock()
        module.Main.side_effect = Exception
        mock_import_napp.return_value = module

        self.controller.load_napp('kytos', 'napp')

        self.assertEqual(self.controller.napps, {})

    @patch('kytos.core.api_server.APIServer.register_napp_endpoints')
    @patch('kytos.core.controller.Controller._import_napp')
    def test_load_napp(self, *args):
        """Test load_napp method."""
        (mock_import_napp, mock_register) = args
        self.controller.napps = {}

        napp = MagicMock()
        module = MagicMock()
        module.Main.return_value = napp
        mock_import_napp.return_value = module

        self.controller.load_napp('kytos', 'napp')

        self.assertEqual(self.controller.napps, {('kytos', 'napp'): napp})
        napp.start.assert_called()
        mock_register.assert_called_with(napp)

    def test_pre_install_napps(self):
        """Test pre_install_napps method."""
        napp_1 = MagicMock()
        napp_2 = MagicMock()
        installed_napps = [napp_1]
        napps = [str(napp_1), str(napp_2)]
        self.napps_manager.get_installed_napps.return_value = installed_napps

        self.controller.pre_install_napps(napps)

        self.napps_manager.install.assert_called_with(str(napp_2), enable=True)

    @patch('kytos.core.controller.Controller.load_napp')
    def test_load_napps(self, mock_load):
        """Test load_napps method."""
        napp = MagicMock()
        napp.username = '******'
        napp.name = 'name'
        enabled_napps = [napp]
        self.napps_manager.get_enabled_napps.return_value = enabled_napps

        self.controller.load_napps()

        mock_load.assert_called_with('kytos', 'name')

    @patch('kytos.core.controller.import_module')
    def test_reload_napp_module__module_not_found(self, mock_import_module):
        """Test reload_napp_module method when module is not found."""
        mock_import_module.side_effect = ModuleNotFoundError

        with self.assertRaises(ModuleNotFoundError):
            self.controller.reload_napp_module('kytos', 'napp', 'napp_file')

    @patch('kytos.core.controller.reload_module')
    @patch('kytos.core.controller.import_module')
    def test_reload_napp_module__import_error(self, *args):
        """Test reload_napp_module method when an import error occurs."""
        (mock_import_module, mock_reload_module) = args
        napp_module = MagicMock()
        mock_import_module.return_value = napp_module
        mock_reload_module.side_effect = ImportError

        with self.assertRaises(ImportError):
            self.controller.reload_napp_module('kytos', 'napp', 'napp_file')

    @patch('kytos.core.controller.reload_module')
    @patch('kytos.core.controller.import_module')
    def test_reload_napp_module(self, *args):
        """Test reload_napp_module method."""
        (mock_import_module, mock_reload_module) = args
        napp_module = MagicMock()
        mock_import_module.return_value = napp_module

        self.controller.reload_napp_module('kytos', 'napp', 'napp_file')

        mock_import_module.assert_called_with('napps.kytos.napp.napp_file')
        mock_reload_module.assert_called_with(napp_module)

    @patch('kytos.core.controller.Controller.load_napp')
    @patch('kytos.core.controller.Controller.unload_napp')
    @patch('kytos.core.controller.Controller.reload_napp_module')
    def test_reload_napp(self, *args):
        """Test reload_napp method."""
        (mock_reload_napp_module, mock_unload, mock_load) = args

        code = self.controller.reload_napp('kytos', 'napp')

        mock_unload.assert_called_with('kytos', 'napp')
        calls = [
            call('kytos', 'napp', 'settings'),
            call('kytos', 'napp', 'main')
        ]
        mock_reload_napp_module.assert_has_calls(calls)
        mock_load.assert_called_with('kytos', 'napp')
        self.assertEqual(code, 200)

    @patch('kytos.core.controller.Controller.unload_napp')
    @patch('kytos.core.controller.Controller.reload_napp_module')
    def test_reload_napp__error(self, *args):
        """Test reload_napp method to error case."""
        (mock_reload_napp_module, _) = args
        mock_reload_napp_module.side_effect = ModuleNotFoundError

        code = self.controller.reload_napp('kytos', 'napp')

        self.assertEqual(code, 400)

    @patch('kytos.core.controller.Controller.reload_napp', return_value=200)
    def test_rest_reload_napp(self, mock_reload_napp):
        """Test rest_reload_napp method."""
        resp, code = self.controller.rest_reload_napp('kytos', 'napp')

        mock_reload_napp.assert_called_with('kytos', 'napp')
        self.assertEqual(resp, 'reloaded')
        self.assertEqual(code, 200)

    @patch('kytos.core.controller.Controller.reload_napp')
    def test_rest_reload_all_napps(self, mock_reload_napp):
        """Test rest_reload_all_napps method."""
        self.controller.napps = [('kytos', 'napp')]
        resp, code = self.controller.rest_reload_all_napps()

        mock_reload_napp.assert_called_with('kytos', 'napp')
        self.assertEqual(resp, 'reloaded')
        self.assertEqual(code, 200)

    @patch('kytos.core.controller.Controller.notify_listeners')
    def test_raw_event_handler(self, mock_notify_listeners):
        """Test raw_event_handler async method by handling a shutdown event."""
        event = MagicMock()
        event.name = 'kytos/core.shutdown'
        self.controller.buffers.raw._queue.sync_q.put(event)

        self.loop.run_until_complete(self.controller.raw_event_handler())

        mock_notify_listeners.assert_called_with(event)

    @patch('kytos.core.controller.Controller.notify_listeners')
    def test_msg_in_event_handler(self, mock_notify_listeners):
        """Test msg_in_event_handler async method by handling a shutdown
           event."""
        event = MagicMock()
        event.name = 'kytos/core.shutdown'
        self.controller.buffers.msg_in._queue.sync_q.put(event)

        self.loop.run_until_complete(self.controller.msg_in_event_handler())

        mock_notify_listeners.assert_called_with(event)

    @patch('kytos.core.controller.Controller.notify_listeners')
    def test_msg_out_event_handler(self, mock_notify_listeners):
        """Test msg_out_event_handler async method by handling a common and a
           shutdown event."""
        dst = MagicMock()
        dst.state = 0
        packet = MagicMock()
        msg = MagicMock()
        msg.pack.return_value = packet

        event_1 = MagicMock()
        event_1.name = 'kytos/core.any'
        event_1.destination = dst
        event_1.content = {"message": msg}

        event_2 = MagicMock()
        event_2.name = 'kytos/core.shutdown'

        self.controller.buffers.msg_out._queue.sync_q.put(event_1)
        self.controller.buffers.msg_out._queue.sync_q.put(event_2)

        self.loop.run_until_complete(self.controller.msg_out_event_handler())

        dst.send.assert_called_with(packet)
        mock_notify_listeners.assert_called_with(event_1)

    @patch('kytos.core.controller.Controller.notify_listeners')
    def test_app_event_handler(self, mock_notify_listeners):
        """Test app_event_handler async method by handling a shutdown event."""
        event = MagicMock()
        event.name = 'kytos/core.shutdown'
        self.controller.buffers.app._queue.sync_q.put(event)

        self.loop.run_until_complete(self.controller.app_event_handler())

        mock_notify_listeners.assert_called_with(event)