X-Git-Url: https://gerrit.fd.io/r/gitweb?p=csit.git;a=blobdiff_plain;f=resources%2Flibraries%2Fpython%2FTrafficGenerator.py;h=52b5247dfd52b9741deb708de61c221fb0f55f08;hp=03881798761d103d2f5ec54412b165c84730f068;hb=b2f75ec0f52110c267b90372e657b664417c1f4b;hpb=147ce6e1ab9e6f557172d05aa0c09d44a34b0fdc diff --git a/resources/libraries/python/TrafficGenerator.py b/resources/libraries/python/TrafficGenerator.py index 0388179876..52b5247dfd 100644 --- a/resources/libraries/python/TrafficGenerator.py +++ b/resources/libraries/python/TrafficGenerator.py @@ -34,28 +34,40 @@ class TGDropRateSearchImpl(DropRateSearch): def measure_loss(self, rate, frame_size, loss_acceptance, loss_acceptance_type, traffic_type): - + """Runs the traffic and evaluate the measured results. + + :param rate: Offered traffic load. + :param frame_size: Size of frame. + :param loss_acceptance: Permitted drop ratio or frames count. + :param loss_acceptance_type: Type of permitted loss. + :param traffic_type: Traffic profile ([2,3]-node-L[2,3], ...). + :type rate: int + :type frame_size: str + :type loss_acceptance: float + :type loss_acceptance_type: LossAcceptanceType + :type traffic_type: str + :returns: Drop threshold exceeded? (True/False) + :rtype: bool + :raises: NotImplementedError if TG is not supported. + :raises: RuntimeError if TG is not specified. + """ # we need instance of TrafficGenerator instantiated by Robot Framework # to be able to use trex_stl-*() tg_instance = BuiltIn().get_library_instance( 'resources.libraries.python.TrafficGenerator') - if tg_instance._node['subtype'] is None: - raise Exception('TG subtype not defined') - elif tg_instance._node['subtype'] == NodeSubTypeTG.TREX: + if tg_instance.node['subtype'] is None: + raise RuntimeError('TG subtype not defined') + elif tg_instance.node['subtype'] == NodeSubTypeTG.TREX: unit_rate = str(rate) + self.get_rate_type_str() tg_instance.trex_stl_start_remote_exec(self.get_duration(), unit_rate, frame_size, traffic_type) - # Get latency stats from stream - self._latency_stats = tg_instance.get_latency() - loss = tg_instance.get_loss() sent = tg_instance.get_sent() if self.loss_acceptance_type_is_percentage(): loss = (float(loss) / float(sent)) * 100 - # TODO: getters for tg_instance logger.trace("comparing: {} < {} {}".format(loss, loss_acceptance, loss_acceptance_type)) @@ -66,6 +78,16 @@ class TGDropRateSearchImpl(DropRateSearch): else: raise NotImplementedError("TG subtype not supported") + def get_latency(self): + """Returns min/avg/max latency. + + :returns: Latency stats. + :rtype: list + """ + tg_instance = BuiltIn().get_library_instance( + 'resources.libraries.python.TrafficGenerator') + return tg_instance.get_latency_int() + class TrafficGenerator(object): """Traffic Generator.""" @@ -83,10 +105,19 @@ class TrafficGenerator(object): # T-REX interface order mapping self._ifaces_reordered = 0 + @property + def node(self): + """Getter. + + :returns: Traffic generator node. + :rtype: dict + """ + return self._node + def get_loss(self): """Return number of lost packets. - :return: Number of lost packets. + :returns: Number of lost packets. :rtype: str """ return self._loss @@ -94,7 +125,7 @@ class TrafficGenerator(object): def get_sent(self): """Return number of sent packets. - :return: Number of sent packets. + :returns: Number of sent packets. :rtype: str """ return self._sent @@ -102,24 +133,24 @@ class TrafficGenerator(object): def get_received(self): """Return number of received packets. - :return: Number of received packets. + :returns: Number of received packets. :rtype: str """ return self._received - def get_latency(self): - """Return min/avg/max latency. + def get_latency_int(self): + """Return rounded min/avg/max latency. - :return: Latency stats. + :returns: Latency stats. :rtype: list """ return self._latency - #pylint: disable=too-many-arguments, too-many-locals def initialize_traffic_generator(self, tg_node, tg_if1, tg_if2, tg_if1_adj_node, tg_if1_adj_if, tg_if2_adj_node, tg_if2_adj_if, - test_type): + test_type, + tg_if1_dst_mac=None, tg_if2_dst_mac=None): """TG initialization. :param tg_node: Traffic generator node. @@ -129,7 +160,9 @@ class TrafficGenerator(object): :param tg_if1_adj_if: TG if1 adjecent interface. :param tg_if2_adj_node: TG if2 adjecent node. :param tg_if2_adj_if: TG if2 adjecent interface. - :test_type: 'L2' or 'L3' - src/dst MAC address. + :param test_type: 'L2' or 'L3' - src/dst MAC address. + :param tg_if1_dst_mac: Interface 1 destination MAC address. + :param tg_if2_dst_mac: Interface 2 destination MAC address. :type tg_node: dict :type tg_if1: str :type tg_if2: str @@ -138,23 +171,26 @@ class TrafficGenerator(object): :type tg_if2_adj_node: dict :type tg_if2_adj_if: str :type test_type: str - :return: nothing + :type tg_if1_dst_mac: str + :type tg_if2_dst_mac: str + :returns: nothing + :raises: RuntimeError in case of issue during initialization. """ topo = Topology() if tg_node['type'] != NodeType.TG: - raise Exception('Node type is not a TG') + raise RuntimeError('Node type is not a TG') self._node = tg_node if tg_node['subtype'] == NodeSubTypeTG.TREX: - trex_path = "/opt/trex-core-2.07" + trex_path = "/opt/trex-core-2.22" ssh = SSH() ssh.connect(tg_node) (ret, stdout, stderr) = ssh.exec_command( - "sudo sh -c '{}/resources/tools/t-rex/" + "sudo -E sh -c '{}/resources/tools/t-rex/" "t-rex-installer.sh'".format(Constants.REMOTE_FW_DIR), timeout=1800) if int(ret) != 0: @@ -176,7 +212,11 @@ class TrafficGenerator(object): if2_adj_mac = topo.get_interface_mac(tg_if2_adj_node, tg_if2_adj_if) else: - raise Exception("test_type unknown") + raise ValueError("test_type unknown") + + if tg_if1_dst_mac is not None and tg_if2_dst_mac is not None: + if1_adj_mac = tg_if1_dst_mac + if2_adj_mac = tg_if2_dst_mac if min(if1_pci, if2_pci) != if1_pci: if1_mac, if2_mac = if2_mac, if1_mac @@ -208,17 +248,19 @@ class TrafficGenerator(object): .format(stdout + stderr)) raise RuntimeError('trex config generation error') - (ret, stdout, stderr) = ssh.exec_command( - "sh -c 'cd {0}/scripts/ && sudo ./trex-cfg'".format(trex_path)) - if int(ret) != 0: - logger.error('trex-cfg failed: {0}'.format(stdout + stderr)) - raise RuntimeError('trex-cfg failed') - max_startup_retries = 3 while max_startup_retries > 0: # kill T-rex only if it is already running (ret, _, _) = ssh.exec_command( - "sh -c 'pgrep t-rex && sudo pkill t-rex'") + "sh -c 'pgrep t-rex && sudo pkill t-rex && sleep 3'") + + # configure T-rex + (ret, stdout, stderr) = ssh.exec_command( + "sh -c 'cd {0}/scripts/ && sudo ./trex-cfg'"\ + .format(trex_path)) + if int(ret) != 0: + logger.error('trex-cfg failed: {0}'.format(stdout + stderr)) + raise RuntimeError('trex-cfg failed') # start T-rex (ret, _, _) = ssh.exec_command( @@ -250,10 +292,12 @@ class TrafficGenerator(object): :param node: Traffic generator node. :type node: dict - :return: nothing + :returns: nothing + :raises: RuntimeError if T-rex teardown failed. + :raises: RuntimeError if node type is not a TG. """ if node['type'] != NodeType.TG: - raise Exception('Node type is not a TG') + raise RuntimeError('Node type is not a TG') if node['subtype'] == NodeSubTypeTG.TREX: ssh = SSH() ssh.connect(node) @@ -269,7 +313,8 @@ class TrafficGenerator(object): :param node: T-REX generator node. :type node: dict - :return: Nothing + :returns: Nothing + :raises: RuntimeError if stop traffic script fails. """ ssh = SSH() ssh.connect(node) @@ -303,7 +348,9 @@ class TrafficGenerator(object): :type async_call: bool :type latency: bool :type warmup_time: int - :return: Nothing + :returns: Nothing + :raises: NotImplementedError if traffic type is not supported. + :raises: RuntimeError in case of TG driver issue. """ ssh = SSH() ssh.connect(self._node) @@ -451,6 +498,21 @@ class TrafficGenerator(object): _p0, _p1, _async, _latency, warmup_time), timeout=int(duration)+60) + elif traffic_type in ["2-node-bridge"]: + (ret, stdout, stderr) = ssh.exec_command( + "sh -c '{0}/resources/tools/t-rex/t-rex-stateless.py " + "--duration={1} -r {2} -s {3} " + "--p{4}_src_start_ip 10.10.10.2 " + "--p{4}_src_end_ip 10.10.10.254 " + "--p{4}_dst_start_ip 20.20.20.2 " + "--p{5}_src_start_ip 20.20.20.2 " + "--p{5}_src_end_ip 20.20.20.254 " + "--p{5}_dst_start_ip 10.10.10.2 " + "{6} {7} --warmup_time={8}'".format(Constants.REMOTE_FW_DIR, + duration, rate, framesize, + _p0, _p1, _async, _latency, + warmup_time), + timeout = int(duration) + 60) else: raise NotImplementedError('Unsupported traffic type') @@ -476,14 +538,16 @@ class TrafficGenerator(object): self._received = self._result.split(', ')[1].split('=')[1] self._sent = self._result.split(', ')[2].split('=')[1] self._loss = self._result.split(', ')[3].split('=')[1] + self._latency = [] self._latency.append(self._result.split(', ')[4].split('=')[1]) self._latency.append(self._result.split(', ')[5].split('=')[1]) def stop_traffic_on_tg(self): - """Stop all traffic on TG + """Stop all traffic on TG. - :return: Nothing + :returns: Nothing + :raises: RuntimeError if TG is not set. """ if self._node is None: raise RuntimeError("TG is not set") @@ -499,14 +563,21 @@ class TrafficGenerator(object): :param rate: Offered load per interface (e.g. 1%, 3gbps, 4mpps, ...). :param framesize: Frame size (L2) in Bytes. :param traffic_type: Traffic profile. + :param warmup_time: Warmup phase in seconds. + :param async_call: Async mode. :param latency: With latency measurement. :type duration: str :type rate: str :type framesize: str :type traffic_type: str + :type warmup_time: int + :type async_call: bool :type latency: bool - :return: TG output. + :returns: TG output. :rtype: str + :raises: RuntimeError if TG is not set. + :raises: RuntimeError if node is not TG or subtype is not specified. + :raises: NotImplementedError if TG is not supported. """ node = self._node @@ -514,10 +585,10 @@ class TrafficGenerator(object): raise RuntimeError("TG is not set") if node['type'] != NodeType.TG: - raise Exception('Node type is not a TG') + raise RuntimeError('Node type is not a TG') if node['subtype'] is None: - raise Exception('TG subtype not defined') + raise RuntimeError('TG subtype not defined') elif node['subtype'] == NodeSubTypeTG.TREX: self.trex_stl_start_remote_exec(duration, rate, framesize, traffic_type, async_call, latency, @@ -530,7 +601,8 @@ class TrafficGenerator(object): def no_traffic_loss_occurred(self): """Fail if loss occurred in traffic run. - :return: nothing + :returns: nothing + :raises: Exception if loss occured. """ if self._loss is None: raise Exception('The traffic generation has not been issued') @@ -541,7 +613,12 @@ class TrafficGenerator(object): loss_acceptance_type): """Fail if loss is higher then accepted in traffic run. - :return: nothing + :param loss_acceptance: Permitted drop ratio or frames count. + :param loss_acceptance_type: Type of permitted loss. + :type loss_acceptance: float + :type loss_acceptance_type: LossAcceptanceType + :returns: nothing + :raises: Exception if loss is above acceptance criteria. """ if self._loss is None: raise Exception('The traffic generation has not been issued')