#!/usr/bin/env python # Copyright 2016 Cisco Systems, Inc. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); you may # not use this file except in compliance with the License. You may obtain # a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the # License for the specific language governing permissions and limitations # under the License. # import json import logging import sys from attrdict import AttrDict from mock import patch import pytest from nfvbench.config import config_loads from nfvbench.credentials import Credentials from nfvbench.fluentd import FluentLogHandler import nfvbench.log import nfvbench.nfvbench from nfvbench.traffic_client import Device from nfvbench.traffic_client import GeneratorConfig from nfvbench.traffic_client import IpBlock from nfvbench.traffic_client import TrafficClient import nfvbench.traffic_gen.traffic_utils as traffic_utils from .mock_trex import no_op # just to get rid of the unused function warning no_op() def setup_module(module): """Enable log.""" nfvbench.log.setup(mute_stdout=True) # ========================================================================= # Traffic client tests # ========================================================================= def test_parse_rate_str(): parse_rate_str = traffic_utils.parse_rate_str try: assert parse_rate_str('100%') == {'rate_percent': '100.0'} assert parse_rate_str('37.5%') == {'rate_percent': '37.5'} assert parse_rate_str('100%') == {'rate_percent': '100.0'} assert parse_rate_str('60pps') == {'rate_pps': '60'} assert parse_rate_str('60kpps') == {'rate_pps': '60000'} assert parse_rate_str('6Mpps') == {'rate_pps': '6000000'} assert parse_rate_str('6gpps') == {'rate_pps': '6000000000'} assert parse_rate_str('80bps') == {'rate_bps': '80'} assert parse_rate_str('80bps') == {'rate_bps': '80'} assert parse_rate_str('80kbps') == {'rate_bps': '80000'} assert parse_rate_str('80kBps') == {'rate_bps': '640000'} assert parse_rate_str('80Mbps') == {'rate_bps': '80000000'} assert parse_rate_str('80 MBps') == {'rate_bps': '640000000'} assert parse_rate_str('80Gbps') == {'rate_bps': '80000000000'} except Exception as exc: assert False, exc.message def should_raise_error(str): try: parse_rate_str(str) except Exception: return True else: return False return False assert should_raise_error('101') assert should_raise_error('201%') assert should_raise_error('10Kbps') assert should_raise_error('0kbps') assert should_raise_error('0pps') assert should_raise_error('-1bps') def test_rate_conversion(): assert traffic_utils.load_to_bps(50, 10000000000) == pytest.approx(5000000000.0) assert traffic_utils.load_to_bps(37, 10000000000) == pytest.approx(3700000000.0) assert traffic_utils.load_to_bps(100, 10000000000) == pytest.approx(10000000000.0) assert traffic_utils.bps_to_load(5000000000.0, 10000000000) == pytest.approx(50.0) assert traffic_utils.bps_to_load(3700000000.0, 10000000000) == pytest.approx(37.0) assert traffic_utils.bps_to_load(10000000000.0, 10000000000) == pytest.approx(100.0) assert traffic_utils.bps_to_pps(500000, 64) == pytest.approx(744.047619048) assert traffic_utils.bps_to_pps(388888, 1518) == pytest.approx(31.6066319896) assert traffic_utils.bps_to_pps(9298322222, 340.3) == pytest.approx(3225895.85831) assert traffic_utils.pps_to_bps(744.047619048, 64) == pytest.approx(500000) assert traffic_utils.pps_to_bps(31.6066319896, 1518) == pytest.approx(388888) assert traffic_utils.pps_to_bps(3225895.85831, 340.3) == pytest.approx(9298322222) # pps at 10Gbps line rate for 64 byte frames LR_64B_PPS = 14880952 LR_1518B_PPS = 812743 def assert_equivalence(reference, value, allowance_pct=1): """Assert if a value is equivalent to a reference value with given margin. :param float reference: reference value to compare to :param float value: value to compare to reference :param float allowance_pct: max allowed percentage of margin 0 : requires exact match 1 : must be equal within 1% of the reference value ... 100: always true """ if reference == 0: assert value == 0 else: assert abs(value - reference) * 100 / reference <= allowance_pct def test_load_from_rate(): assert traffic_utils.get_load_from_rate('100%') == 100 assert_equivalence(100, traffic_utils.get_load_from_rate(str(LR_64B_PPS) + 'pps')) assert_equivalence(50, traffic_utils.get_load_from_rate(str(LR_64B_PPS / 2) + 'pps')) assert_equivalence(100, traffic_utils.get_load_from_rate('10Gbps')) assert_equivalence(50, traffic_utils.get_load_from_rate('5000Mbps')) assert_equivalence(1, traffic_utils.get_load_from_rate('100Mbps')) assert_equivalence(100, traffic_utils.get_load_from_rate(str(LR_1518B_PPS) + 'pps', avg_frame_size=1518)) assert_equivalence(100, traffic_utils.get_load_from_rate(str(LR_1518B_PPS * 2) + 'pps', avg_frame_size=1518, line_rate='20Gbps')) # ========================================================================= # Other tests # ========================================================================= def test_no_credentials(): cred = Credentials('/completely/wrong/path/openrc', None, False) if cred.rc_auth_url: # shouldn't get valid data unless user set environment variables assert False else: assert True def test_ip_block(): ipb = IpBlock('10.0.0.0', '0.0.0.1', 256) assert ipb.get_ip() == '10.0.0.0' assert ipb.get_ip(255) == '10.0.0.255' with pytest.raises(IndexError): ipb.get_ip(256) ipb = IpBlock('10.0.0.0', '0.0.0.1', 1) assert ipb.get_ip() == '10.0.0.0' with pytest.raises(IndexError): ipb.get_ip(1) ipb = IpBlock('10.0.0.0', '0.0.0.2', 256) assert ipb.get_ip() == '10.0.0.0' assert ipb.get_ip(1) == '10.0.0.2' assert ipb.get_ip(127) == '10.0.0.254' assert ipb.get_ip(128) == '10.0.1.0' with pytest.raises(IndexError): ipb.get_ip(256) # verify with step larger than 1 ipb = IpBlock('10.0.0.0', '0.0.0.2', 256) assert ipb.get_ip() == '10.0.0.0' assert ipb.get_ip(1) == '10.0.0.2' assert ipb.get_ip(128) == '10.0.1.0' assert ipb.get_ip(255) == '10.0.1.254' with pytest.raises(IndexError): ipb.get_ip(256) def check_stream_configs(gen_config): """Verify that the range for each chain have adjacent IP ranges without holes between chains.""" config = gen_config.config tgc = config['traffic_generator'] step = Device.ip_to_int(tgc['ip_addrs_step']) cfc = 0 sip = Device.ip_to_int(tgc['ip_addrs'][0].split('/')[0]) dip = Device.ip_to_int(tgc['ip_addrs'][1].split('/')[0]) stream_configs = gen_config.devices[0].get_stream_configs() for index in range(config['service_chain_count']): stream_cfg = stream_configs[index] assert stream_cfg['ip_src_count'] == stream_cfg['ip_dst_count'] assert Device.ip_to_int(stream_cfg['ip_src_addr']) == sip assert Device.ip_to_int(stream_cfg['ip_dst_addr']) == dip count = stream_cfg['ip_src_count'] cfc += count sip += count * step dip += count * step assert cfc == int(config['flow_count'] / 2) def _check_device_flow_config(step_ip): config = _get_dummy_tg_config('PVP', '1Mpps', scc=10, fc=99999, step_ip=step_ip) gen_config = GeneratorConfig(config) check_stream_configs(gen_config) def test_device_flow_config(): _check_device_flow_config('0.0.0.1') _check_device_flow_config('0.0.0.2') def test_config(): refcfg = {1: 100, 2: {21: 100, 22: 200}, 3: None} res1 = {1: 10, 2: {21: 100, 22: 200}, 3: None} res2 = {1: 100, 2: {21: 1000, 22: 200}, 3: None} res3 = {1: 100, 2: {21: 100, 22: 200}, 3: "abc"} assert config_loads("{}", refcfg) == refcfg assert config_loads("{1: 10}", refcfg) == res1 assert config_loads("{2: {21: 1000}}", refcfg) == res2 assert config_loads('{3: "abc"}', refcfg) == res3 # correctly fails # pairs of input string and expected subset (None if identical) fail_pairs = [ ["{4: 0}", None], ["{2: {21: 100, 30: 50}}", "{2: {30: 50}}"], ["{2: {0: 1, 1: 2}, 5: 5}", None], ["{1: 'abc', 2: {21: 0}}", "{1: 'abc'}"], ["{2: 100}", None] ] for fail_pair in fail_pairs: with pytest.raises(Exception) as e_info: config_loads(fail_pair[0], refcfg) expected = fail_pair[1] if expected is None: expected = fail_pair[0] assert expected in str(e_info) # whitelist keys flavor = {'flavor': {'vcpus': 2, 'ram': 8192, 'disk': 0, 'extra_specs': {'hw:cpu_policy': 'dedicated'}}} new_flavor = {'flavor': {'vcpus': 2, 'ram': 8192, 'disk': 0, 'extra_specs': {'hw:cpu_policy': 'dedicated', 'hw:numa_nodes': 2}}} assert config_loads("{'flavor': {'extra_specs': {'hw:numa_nodes': 2}}}", flavor, whitelist_keys=['alpha', 'extra_specs']) == new_flavor def test_fluentd(): logger = logging.getLogger('fluent-logger') class FluentdConfig(dict): def __getattr__(self, attr): return self.get(attr) fluentd_configs = [ FluentdConfig({ 'logging_tag': 'nfvbench', 'result_tag': 'resultnfvbench', 'ip': '127.0.0.1', 'port': 7081 }), FluentdConfig({ 'logging_tag': 'nfvbench', 'result_tag': 'resultnfvbench', 'ip': '127.0.0.1', 'port': 24224 }), FluentdConfig({ 'logging_tag': None, 'result_tag': 'resultnfvbench', 'ip': '127.0.0.1', 'port': 7082 }), FluentdConfig({ 'logging_tag': 'nfvbench', 'result_tag': None, 'ip': '127.0.0.1', 'port': 7083 }) ] handler = FluentLogHandler(fluentd_configs=fluentd_configs) logger.addHandler(handler) logger.setLevel(logging.INFO) logger.info('test') logger.warning('test %d', 100) try: raise Exception("test") except Exception: logger.exception("got exception") def assert_ndr_pdr(stats, ndr, ndr_dr, pdr, pdr_dr): assert stats['ndr']['rate_percent'] == ndr assert stats['ndr']['stats']['overall']['drop_percentage'] == ndr_dr assert_equivalence(pdr, stats['pdr']['rate_percent']) assert_equivalence(pdr_dr, stats['pdr']['stats']['overall']['drop_percentage']) def _get_dummy_tg_config(chain_type, rate, scc=1, fc=10, step_ip='0.0.0.1', ip0='10.0.0.0/8', ip1='20.0.0.0/8'): return AttrDict({ 'traffic_generator': {'host_name': 'nfvbench_tg', 'default_profile': 'dummy', 'generator_profile': [{'name': 'dummy', 'tool': 'dummy', 'ip': '127.0.0.1', 'intf_speed': '10Gbps', 'interfaces': [{'port': 0, 'pci': '0.0'}, {'port': 1, 'pci': '0.0'}]}], 'ip_addrs_step': step_ip, 'ip_addrs': [ip0, ip1], 'tg_gateway_ip_addrs': ['1.1.0.100', '2.2.0.100'], 'tg_gateway_ip_addrs_step': step_ip, 'gateway_ip_addrs': ['1.1.0.2', '2.2.0.2'], 'gateway_ip_addrs_step': step_ip, 'mac_addrs_left': None, 'mac_addrs_right': None, 'udp_src_port': None, 'udp_dst_port': None}, 'traffic': {'profile': 'profile_64', 'bidirectional': True}, 'traffic_profile': [{'name': 'profile_64', 'l2frame_size': ['64']}], 'generator_profile': None, 'service_chain': chain_type, 'service_chain_count': scc, 'flow_count': fc, 'vlan_tagging': True, 'no_arp': False, 'duration_sec': 1, 'interval_sec': 1, 'pause_sec': 1, 'rate': rate, 'check_traffic_time_sec': 200, 'generic_poll_sec': 2, 'measurement': {'NDR': 0.001, 'PDR': 0.1, 'load_epsilon': 0.1}, 'l2_loopback': False, 'cores': None, 'mbuf_factor': None, 'disable_hdrh': None, 'mbuf_64': None, 'service_mode': False, 'no_flow_stats': False, 'no_latency_stats': False, 'no_latency_streams': False }) def _get_traffic_client(): config = _get_dummy_tg_config('PVP', 'ndr_pdr') config['vxlan'] = False config['ndr_run'] = True config['pdr_run'] = True config['generator_profile'] = 'dummy' config['single_run'] = False traffic_client = TrafficClient(config) traffic_client.start_traffic_generator() traffic_client.set_traffic('64', True) return traffic_client @patch.object(TrafficClient, 'skip_sleep', lambda x: True) def test_ndr_at_lr(): """Test NDR at line rate.""" traffic_client = _get_traffic_client() tg = traffic_client.gen # this is a perfect sut with no loss at LR tg.set_response_curve(lr_dr=0, ndr=100, max_actual_tx=100, max_11_tx=100) # tx packets should be line rate for 64B and no drops... assert tg.get_tx_pps_dropped_pps(100) == (LR_64B_PPS, 0) # NDR and PDR should be at 100% # traffic_client.ensure_end_to_end() results = traffic_client.get_ndr_and_pdr() assert_ndr_pdr(results, 200.0, 0.0, 200.0, 0.0) @patch.object(TrafficClient, 'skip_sleep', lambda x: True) def test_ndr_at_50(): """Test NDR at 50% line rate. This is a sut with an NDR of 50% and linear drop rate after NDR up to 20% drops at LR (meaning that if you send 100% TX, you will only receive 80% RX) the tg requested TX/actual TX ratio is up to 50%, after 50% is linear up 80% actuak TX when requesting 100% """ traffic_client = _get_traffic_client() tg = traffic_client.gen tg.set_response_curve(lr_dr=20, ndr=50, max_actual_tx=80, max_11_tx=50) # tx packets should be half line rate for 64B and no drops... assert tg.get_tx_pps_dropped_pps(50) == (LR_64B_PPS / 2, 0) # at 100% TX requested, actual TX is 80% where the drop rate is 3/5 of 20% of the actual TX assert tg.get_tx_pps_dropped_pps(100) == (int(LR_64B_PPS * 0.8), int(LR_64B_PPS * 0.8 * 0.6 * 0.2)) results = traffic_client.get_ndr_and_pdr() assert_ndr_pdr(results, 100.0, 0.0, 100.781, 0.09374) @patch.object(TrafficClient, 'skip_sleep', lambda x: True) def test_ndr_pdr_low_cpu(): """Test NDR and PDR with too low cpu. This test is for the case where the TG is underpowered and cannot send fast enough for the NDR true NDR=40%, actual TX at 50% = 30%, actual measured DR is 0% The ndr/pdr should bail out with a warning and a best effort measured NDR of 30% """ traffic_client = _get_traffic_client() tg = traffic_client.gen tg.set_response_curve(lr_dr=50, ndr=40, max_actual_tx=60, max_11_tx=0) # tx packets should be 30% at requested half line rate for 64B and no drops... assert tg.get_tx_pps_dropped_pps(50) == (int(LR_64B_PPS * 0.3), 0) results = traffic_client.get_ndr_and_pdr() assert results # import pprint # pp = pprint.PrettyPrinter(indent=4) # pp.pprint(results) @patch.object(TrafficClient, 'skip_sleep', lambda x: True) def test_no_openstack(): """Test nfvbench using main.""" config = _get_dummy_tg_config('EXT', '1000pps') config.openrc_file = None config.vlans = [[100], [200]] config['traffic_generator']['mac_addrs_left'] = ['00:00:00:00:00:00'] config['traffic_generator']['mac_addrs_right'] = ['00:00:00:00:01:00'] del config['generator_profile'] old_argv = sys.argv sys.argv = [old_argv[0], '-c', json.dumps(config)] nfvbench.nfvbench.main() sys.argv = old_argv