From 3636829d1fd2053d09c95a98ec1a697c601e0e6f Mon Sep 17 00:00:00 2001 From: Rodolfo Alonso Hernandez Date: Thu, 16 Nov 2017 08:56:56 +0000 Subject: Make GenericTrafficGen class abstract GenericTrafficGen class is now an abstract class. Only optional methods are implemented. - 'run_traffic' and 'terminate' are mandatory. - 'listen_traffic', 'verify_traffic' and 'wait_for_instance' are optional. By default these methods doesn't execute any action. JIRA: YARDSTICK-853 Change-Id: I2befdaa337af79cc2364bdd7c66183c31c5ab69a Signed-off-by: Rodolfo Alonso Hernandez --- .../network_services/vnf_generic/vnf/test_base.py | 34 +++------- .../vnf_generic/vnf/test_sample_vnf.py | 73 ++++++++-------------- yardstick/network_services/vnf_generic/vnf/base.py | 37 ++++++++--- .../network_services/vnf_generic/vnf/sample_vnf.py | 22 ------- .../network_services/vnf_generic/vnf/tg_ixload.py | 7 --- .../network_services/vnf_generic/vnf/tg_ping.py | 12 ---- .../network_services/vnf_generic/vnf/tg_prox.py | 5 +- .../vnf_generic/vnf/tg_rfc2544_ixia.py | 7 --- .../network_services/vnf_generic/vnf/tg_trex.py | 8 +-- 9 files changed, 65 insertions(+), 140 deletions(-) diff --git a/tests/unit/network_services/vnf_generic/vnf/test_base.py b/tests/unit/network_services/vnf_generic/vnf/test_base.py index 478ce186b..f812d67ef 100644 --- a/tests/unit/network_services/vnf_generic/vnf/test_base.py +++ b/tests/unit/network_services/vnf_generic/vnf/test_base.py @@ -243,31 +243,13 @@ class TestGenericVNF(unittest.TestCase): class TestGenericTrafficGen(unittest.TestCase): - def test___init__(self): - vnfd = TestGenericVNF.VNFD['vnfd:vnfd-catalog']['vnfd'][0] - generic_traffic_gen = GenericTrafficGen('vnf1', vnfd) - assert generic_traffic_gen.name == "vnf1" - - def test_listen_traffic(self): - vnfd = TestGenericVNF.VNFD['vnfd:vnfd-catalog']['vnfd'][0] - generic_traffic_gen = GenericTrafficGen('vnf1', vnfd) - traffic_profile = {} - self.assertIsNone(generic_traffic_gen.listen_traffic(traffic_profile)) - - def test_run_traffic(self): - vnfd = TestGenericVNF.VNFD['vnfd:vnfd-catalog']['vnfd'][0] - generic_traffic_gen = GenericTrafficGen('vnf1', vnfd) - traffic_profile = {} - self.assertRaises(NotImplementedError, - generic_traffic_gen.run_traffic, traffic_profile) - - def test_terminate(self): - vnfd = TestGenericVNF.VNFD['vnfd:vnfd-catalog']['vnfd'][0] - generic_traffic_gen = GenericTrafficGen('vnf1', vnfd) - self.assertRaises(NotImplementedError, generic_traffic_gen.terminate) - def test_verify_traffic(self): + def test_definition(self): + """Make sure that the abstract class cannot be instantiated""" vnfd = TestGenericVNF.VNFD['vnfd:vnfd-catalog']['vnfd'][0] - generic_traffic_gen = GenericTrafficGen('vnf1', vnfd) - traffic_profile = {} - self.assertIsNone(generic_traffic_gen.verify_traffic(traffic_profile)) + name = 'vnf1' + with self.assertRaises(TypeError) as exc: + GenericTrafficGen(name, vnfd) + msg = ("Can't instantiate abstract class GenericTrafficGen with " + "abstract methods run_traffic, terminate") + self.assertEqual(msg, str(exc.exception)) diff --git a/tests/unit/network_services/vnf_generic/vnf/test_sample_vnf.py b/tests/unit/network_services/vnf_generic/vnf/test_sample_vnf.py index 57f9fac61..85b10c5a9 100644 --- a/tests/unit/network_services/vnf_generic/vnf/test_sample_vnf.py +++ b/tests/unit/network_services/vnf_generic/vnf/test_sample_vnf.py @@ -2022,55 +2022,32 @@ class TestSampleVNFTrafficGen(unittest.TestCase): sample_vnf_tg.terminate() - @mock.patch('yardstick.network_services.vnf_generic.vnf.sample_vnf.time') - @mock.patch('yardstick.network_services.vnf_generic.vnf.sample_vnf.LOG') - def test_wait_for_instantiate(self, mock_logger, mock_time): + def test__wait_for_process(self): sample_vnf_tg = SampleVNFTrafficGen('tg1', self.VNFD_0) - sample_vnf_tg._check_status = mock.Mock(side_effect=iter([1, 0])) - sample_vnf_tg._tg_process = mock.Mock() - sample_vnf_tg._tg_process.is_alive.return_value = True - sample_vnf_tg._tg_process.exitcode = 234 - - self.assertEqual(sample_vnf_tg.wait_for_instantiate(), 234) - - @mock.patch('yardstick.network_services.vnf_generic.vnf.sample_vnf.time') - @mock.patch('yardstick.network_services.vnf_generic.vnf.sample_vnf.LOG') - def test_wait_for_instantiate_not_alive(self, mock_logger, mock_time): + with mock.patch.object(sample_vnf_tg, '_check_status', + return_value=0) as mock_status, \ + mock.patch.object(sample_vnf_tg, '_tg_process') as mock_proc: + mock_proc.is_alive.return_value = True + mock_proc.exitcode = 234 + self.assertEqual(sample_vnf_tg._wait_for_process(), 234) + mock_proc.is_alive.assert_called_once() + mock_status.assert_called_once() + + def test__wait_for_process_not_alive(self): sample_vnf_tg = SampleVNFTrafficGen('tg1', self.VNFD_0) - sample_vnf_tg._check_status = mock.Mock(return_value=1) - sample_vnf_tg._tg_process = mock.Mock() - sample_vnf_tg._tg_process.is_alive.side_effect = iter([True, False]) - sample_vnf_tg._tg_process.exitcode = 234 - - with self.assertRaises(RuntimeError): - sample_vnf_tg.wait_for_instantiate() - - @mock.patch('yardstick.network_services.vnf_generic.vnf.sample_vnf.time') - @mock.patch('yardstick.network_services.vnf_generic.vnf.sample_vnf.LOG') - @mock.patch('yardstick.network_services.vnf_generic.vnf.sample_vnf.Process') - def test_wait_for_instantiate_delayed(self, mock_process, mock_logger, mock_time): - class MockClientStarted(mock.Mock): - - def __init__(self, *args, **kwargs): - super(MockClientStarted, self).__init__(*args, **kwargs) - self.iter = iter([0, 0, 1]) - - @property - def value(self): - return next(self.iter) - - mock_traffic_profile = mock.Mock(autospec=TrafficProfile) - mock_traffic_profile.get_traffic_definition.return_value = "64" - mock_traffic_profile.execute_traffic.return_value = "64" - mock_traffic_profile.params = self.TRAFFIC_PROFILE + with mock.patch.object(sample_vnf_tg, '_tg_process') as mock_proc: + mock_proc.is_alive.return_value = False + self.assertRaises(RuntimeError, sample_vnf_tg._wait_for_process) + mock_proc.is_alive.assert_called_once() + def test__wait_for_process_delayed(self): sample_vnf_tg = SampleVNFTrafficGen('tg1', self.VNFD_0) - sample_vnf_tg._check_status = mock.Mock(side_effect=iter([1, 0])) - sample_vnf_tg._tg_process = mock.Mock() - sample_vnf_tg._tg_process.is_alive.return_value = True - sample_vnf_tg._tg_process.exitcode = 234 - sample_vnf_tg.resource_helper = mock.Mock() - sample_vnf_tg.resource_helper.client_started = MockClientStarted() - - self.assertTrue(sample_vnf_tg.run_traffic(mock_traffic_profile)) - self.assertEqual(mock_time.sleep.call_count, 2) + with mock.patch.object(sample_vnf_tg, '_check_status', + side_effect=[1, 0]) as mock_status, \ + mock.patch.object(sample_vnf_tg, + '_tg_process') as mock_proc: + mock_proc.is_alive.return_value = True + mock_proc.exitcode = 234 + self.assertEqual(sample_vnf_tg._wait_for_process(), 234) + mock_proc.is_alive.assert_has_calls([mock.call(), mock.call()]) + mock_status.assert_has_calls([mock.call(), mock.call()]) diff --git a/yardstick/network_services/vnf_generic/vnf/base.py b/yardstick/network_services/vnf_generic/vnf/base.py index 778119568..8ed754dce 100644 --- a/yardstick/network_services/vnf_generic/vnf/base.py +++ b/yardstick/network_services/vnf_generic/vnf/base.py @@ -13,11 +13,14 @@ # limitations under the License. """ Base class implementation for generic vnf implementation """ -from __future__ import absolute_import +import abc + import logging +import six from yardstick.network_services.helpers.samplevnf_helper import PortPairs + LOG = logging.getLogger(__name__) @@ -207,6 +210,7 @@ class GenericVNF(VNFObject): raise NotImplementedError() +@six.add_metaclass(abc.ABCMeta) class GenericTrafficGen(GenericVNF): """ Class providing file-like API for generic traffic generator """ @@ -215,18 +219,29 @@ class GenericTrafficGen(GenericVNF): self.runs_traffic = True self.traffic_finished = False + @abc.abstractmethod def run_traffic(self, traffic_profile): - """ Generate traffic on the wire according to the given params. - Method is non-blocking, returns immediately when traffic process + """Generate traffic on the wire according to the given params. + + This method is non-blocking, returns immediately when traffic process is running. Mandatory. :param traffic_profile: :return: True/False """ - raise NotImplementedError() + + @abc.abstractmethod + def terminate(self): + """After this method finishes, all traffic processes should stop. + + Mandatory. + + :return: True/False + """ def listen_traffic(self, traffic_profile): - """ Listen to traffic with the given parameters. + """Listen to traffic with the given parameters. + Method is non-blocking, returns immediately when traffic process is running. Optional. @@ -236,16 +251,20 @@ class GenericTrafficGen(GenericVNF): pass def verify_traffic(self, traffic_profile): - """ Verify captured traffic after it has ended. Optional. + """Verify captured traffic after it has ended. + + Optional. :param traffic_profile: :return: dict """ pass - def terminate(self): - """ After this method finishes, all traffic processes should stop. Mandatory. + def wait_for_instantiate(self): + """Wait for an instance to load. + + Optional. :return: True/False """ - raise NotImplementedError() + pass diff --git a/yardstick/network_services/vnf_generic/vnf/sample_vnf.py b/yardstick/network_services/vnf_generic/vnf/sample_vnf.py index ff81b5f5f..20e5895ee 100644 --- a/yardstick/network_services/vnf_generic/vnf/sample_vnf.py +++ b/yardstick/network_services/vnf_generic/vnf/sample_vnf.py @@ -895,10 +895,6 @@ class SampleVNFTrafficGen(GenericTrafficGen): self._tg_process = Process(name=name, target=self._start_server) self._tg_process.start() - def wait_for_instantiate(self): - # overridden by subclasses - return self._wait_for_process() - def _check_status(self): raise NotImplementedError @@ -942,24 +938,6 @@ class SampleVNFTrafficGen(GenericTrafficGen): return self._traffic_process.is_alive() - def listen_traffic(self, traffic_profile): - """ Listen to traffic with the given parameters. - Method is non-blocking, returns immediately when traffic process - is running. Optional. - - :param traffic_profile: - :return: True/False - """ - pass - - def verify_traffic(self, traffic_profile): - """ Verify captured traffic after it has ended. Optional. - - :param traffic_profile: - :return: dict - """ - pass - def collect_kpi(self): # check if the tg processes have exited for proc in (self._tg_process, self._traffic_process): diff --git a/yardstick/network_services/vnf_generic/vnf/tg_ixload.py b/yardstick/network_services/vnf_generic/vnf/tg_ixload.py index 612799ff5..61c045405 100644 --- a/yardstick/network_services/vnf_generic/vnf/tg_ixload.py +++ b/yardstick/network_services/vnf_generic/vnf/tg_ixload.py @@ -170,16 +170,9 @@ class IxLoadTrafficGen(SampleVNFTrafficGen): self.resource_helper.log() self.resource_helper.data = self.resource_helper.make_aggregates() - def listen_traffic(self, traffic_profile): - pass - def instantiate(self, scenario_cfg, context_cfg): super(IxLoadTrafficGen, self).instantiate(scenario_cfg, context_cfg) - def wait_for_instantiate(self): - # not needed for Ixload - pass - def terminate(self): call(["pkill", "-9", "http_ixload.py"]) super(IxLoadTrafficGen, self).terminate() diff --git a/yardstick/network_services/vnf_generic/vnf/tg_ping.py b/yardstick/network_services/vnf_generic/vnf/tg_ping.py index 9cd9f2574..30a917862 100644 --- a/yardstick/network_services/vnf_generic/vnf/tg_ping.py +++ b/yardstick/network_services/vnf_generic/vnf/tg_ping.py @@ -14,7 +14,6 @@ """ PING acts as traffic generation and vnf definitions based on IETS Spec """ from __future__ import absolute_import -from __future__ import print_function import logging import re @@ -135,14 +134,3 @@ class PingTrafficGen(SampleVNFTrafficGen): } self.setup_helper.setup_vnf_environment() - - def wait_for_instantiate(self): - pass - - def listen_traffic(self, traffic_profile): - """ Not needed for ping - - :param traffic_profile: - :return: - """ - pass diff --git a/yardstick/network_services/vnf_generic/vnf/tg_prox.py b/yardstick/network_services/vnf_generic/vnf/tg_prox.py index 40eda753f..151252ce8 100644 --- a/yardstick/network_services/vnf_generic/vnf/tg_prox.py +++ b/yardstick/network_services/vnf_generic/vnf/tg_prox.py @@ -12,7 +12,7 @@ # See the License for the specific language governing permissions and # limitations under the License. -from __future__ import print_function, absolute_import +from __future__ import absolute_import import logging @@ -63,9 +63,6 @@ class ProxTrafficGen(SampleVNFTrafficGen): self.vpci_if_name_ascending = self._sort_vpci(vnfd) self.resource_helper.vpci_if_name_ascending = self._sort_vpci(vnfd) - def listen_traffic(self, traffic_profile): - pass - def terminate(self): self._vnf_wrapper.terminate() super(ProxTrafficGen, self).terminate() diff --git a/yardstick/network_services/vnf_generic/vnf/tg_rfc2544_ixia.py b/yardstick/network_services/vnf_generic/vnf/tg_rfc2544_ixia.py index 47c5a35d9..a8b19cfba 100644 --- a/yardstick/network_services/vnf_generic/vnf/tg_rfc2544_ixia.py +++ b/yardstick/network_services/vnf_generic/vnf/tg_rfc2544_ixia.py @@ -204,13 +204,6 @@ class IxiaTrafficGen(SampleVNFTrafficGen): def scale(self, flavor=""): pass - def listen_traffic(self, traffic_profile): - pass - def terminate(self): self.resource_helper.stop_collect() super(IxiaTrafficGen, self).terminate() - - def wait_for_instantiate(self): - # not needed for IxNet - pass diff --git a/yardstick/network_services/vnf_generic/vnf/tg_trex.py b/yardstick/network_services/vnf_generic/vnf/tg_trex.py index 93ba8557a..4250cb7a6 100644 --- a/yardstick/network_services/vnf_generic/vnf/tg_trex.py +++ b/yardstick/network_services/vnf_generic/vnf/tg_trex.py @@ -14,8 +14,6 @@ """ Trex acts as traffic generation and vnf definitions based on IETS Spec """ from __future__ import absolute_import -from __future__ import print_function - import logging import os @@ -191,8 +189,8 @@ class TrexTrafficGen(SampleVNFTrafficGen): def scale(self, flavor=""): pass - def listen_traffic(self, traffic_profile): - pass - def terminate(self): self.resource_helper.terminate() + + def wait_for_instantiate(self): + return self._wait_for_process() -- cgit 1.2.3-korg