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How to use _verify_stats_exists method in lisa

Best Python code snippet using lisa_python

networksettings.py

Source:networksettings.py

...506    def validate_device_statistics(self, environment: Environment, log: Logger) -> None:507        server_node = cast(RemoteNode, environment.nodes[0])508        client_node = cast(RemoteNode, environment.nodes[1])509        ethtool = client_node.tools[Ethtool]510        self._verify_stats_exists(server_node, client_node)511        starving_queues: Tuple[List[int], List[int]] = ([], [])512        prev_starved_queues = starving_queues513        an_enabled = False514        device = client_node.nics.default_nic515        nic = client_node.nics.get_nic(device)516        if nic.lower:517            # If AN is enabled on this interface then use VF nic stats.518            an_enabled = True519            device = nic.lower520        timeout = 300521        timer = create_timer()522        self._run_iperf3(server_node, client_node, run_time_seconds=timeout)523        while timer.elapsed(False) < timeout:524            per_tx_queue_packets: List[int] = []525            per_rx_queue_packets: List[int] = []526            device_stats = ethtool.get_device_statistics(device, True)527            if an_enabled:528                per_tx_queue_packets = [529                    v530                    for (k, v) in device_stats.counters.items()531                    if self._vf_tx_stats_regex.search(k)532                ]533                per_rx_queue_packets = [534                    v535                    for (k, v) in device_stats.counters.items()536                    if self._vf_rx_stats_regex.search(k)537                ]538            else:539                per_tx_queue_packets = [540                    v541                    for (k, v) in device_stats.counters.items()542                    if self._tx_queue_stats_regex.search(k)543                ]544                per_rx_queue_packets = [545                    v546                    for (k, v) in device_stats.counters.items()547                    if self._rx_queue_stats_regex.search(k)548                ]549            starving_queues = (550                [queue for queue, pkts in enumerate(per_tx_queue_packets) if pkts == 0],551                [queue for queue, pkts in enumerate(per_rx_queue_packets) if pkts == 0],552            )553            if (not prev_starved_queues) and (not starving_queues):554                # This means there is no queue that was starved in last check555                # and this check. It establishes no single queue is being starved.556                # Hence Test would PASS.557                return558            prev_starved_queues = (559                [560                    element561                    for element in prev_starved_queues[0]562                    if element in starving_queues[0]563                ],564                [565                    element566                    for element in prev_starved_queues[1]567                    if element in starving_queues[1]568                ],569            )570            starving_queues = ([], [])571            time.sleep(2)572        assert_that(573            prev_starved_queues[0],574            f"The tx stats for queue/queues {prev_starved_queues[0]} is/are 0."575            " This can have perf impact, please ensure all tx queues are used for"576            " traffic distribution.",577        ).is_empty()578        assert_that(579            prev_starved_queues[1],580            f"The rx stats for queue/queues {prev_starved_queues[1]} is/are 0"581            " This can have perf impact, please ensure all rx queues are used for"582            " traffic distribution.",583        ).is_empty()584    def after_case(self, log: Logger, **kwargs: Any) -> None:585        environment: Environment = kwargs.pop("environment")586        cleanup_iperf3(environment)587    def _check_msg_level_change_supported(self, node: Node) -> None:588        msg_level_symbols: Union[str, List[str]]589        uname_tool = node.tools[Uname]590        kernel_version = uname_tool.get_linux_information().kernel_version591        if not node.tools[KernelConfig].is_built_in("CONFIG_HYPERV_NET"):592            modinfo = node.tools[Modinfo]593            netvsc_module = modinfo.get_filename("hv_netvsc")594            # remove any escape character at the end of string595            netvsc_module = netvsc_module.strip()596            decompress_tool = ""597            # if the module is archived as xz, extract it to check symbols598            if netvsc_module.endswith(".xz"):599                decompress_tool = "xz"600            # if the module is archived as zst, extract it to check symbols601            if netvsc_module.endswith(".zst"):602                decompress_tool = "zstd"603            if decompress_tool:604                node.execute(605                    f"cp {netvsc_module} {node.working_path}/", cwd=node.working_path606                )607                node.execute(608                    (609                        f"{decompress_tool} -d {node.working_path}/"610                        f"{netvsc_module.rsplit('/', 1)[-1]}"611                    ),612                    cwd=node.working_path,613                )614                netvsc_module = node.execute(615                    f"ls {node.working_path}/hv_netvsc.ko",616                    shell=True,617                    cwd=node.working_path,618                ).stdout619            assert node.shell.exists(620                PurePosixPath(netvsc_module)621            ), f"{netvsc_module} doesn't exist."622            nm = node.tools[Nm]623            msg_level_symbols = nm.get_symbol_table(netvsc_module)624        else:625            # if the module is builtin626            command = f"grep 'netvsc.*msglevel' '/boot/System.map-{kernel_version}'"627            result = node.execute(628                command,629                shell=True,630                sudo=True,631                expected_exit_code=0,632                expected_exit_code_failure_message="Couldn't get the message level"633                "symbols in System map.",634            )635            msg_level_symbols = result.stdout636        if ("netvsc_get_msglevel" not in msg_level_symbols) or (637            "netvsc_set_msglevel" not in msg_level_symbols638        ):639            raise SkippedException(640                f"Get/Set message level not supported on {kernel_version},"641                " Skipping test."642            )643    def _verify_stats_exists(644        self,645        server_node: RemoteNode,646        client_node: RemoteNode,647    ) -> None:648        ethtool = client_node.tools[Ethtool]649        try:650            devices_statistics = ethtool.get_all_device_statistics()651        except UnsupportedOperationException as identifier:652            raise SkippedException(identifier)653        per_queue_stats = 0654        per_vf_queue_stats = 0655        for device_stats in devices_statistics:656            nic = client_node.nics.get_nic(device_stats.interface)657            if nic.lower:...

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