1 # Copyright (c) 2016-2018 Intel Corporation
3 # Licensed under the Apache License, Version 2.0 (the "License");
4 # you may not use this file except in compliance with the License.
5 # You may obtain a copy of the License at
7 # http://www.apache.org/licenses/LICENSE-2.0
9 # Unless required by applicable law or agreed to in writing, software
10 # distributed under the License is distributed on an "AS IS" BASIS,
11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 # See the License for the specific language governing permissions and
13 # limitations under the License.
14 """ Base class implementation for generic vnf implementation """
16 from collections import Mapping
18 from multiprocessing import Queue, Value, Process
28 from trex_stl_lib.trex_stl_client import LoggerApi
29 from trex_stl_lib.trex_stl_client import STLClient
30 from trex_stl_lib.trex_stl_exceptions import STLError
31 from yardstick.benchmark.contexts.base import Context
32 from yardstick.common import exceptions as y_exceptions
33 from yardstick.common.process import check_if_process_failed
34 from yardstick.common import utils
35 from yardstick.network_services import constants
36 from yardstick.network_services.helpers.dpdkbindnic_helper import DpdkBindHelper, DpdkNode
37 from yardstick.network_services.helpers.samplevnf_helper import MultiPortConfig
38 from yardstick.network_services.nfvi.resource import ResourceProfile
39 from yardstick.network_services.utils import get_nsb_option
40 from yardstick.network_services.vnf_generic.vnf.base import GenericTrafficGen
41 from yardstick.network_services.vnf_generic.vnf.base import GenericVNF
42 from yardstick.network_services.vnf_generic.vnf.base import QueueFileWrapper
43 from yardstick.network_services.vnf_generic.vnf.vnf_ssh_helper import VnfSshHelper
46 LOG = logging.getLogger(__name__)
49 class SetupEnvHelper(object):
51 CFG_CONFIG = os.path.join(constants.REMOTE_TMP, "sample_config")
52 CFG_SCRIPT = os.path.join(constants.REMOTE_TMP, "sample_script")
53 DEFAULT_CONFIG_TPL_CFG = "sample.cfg"
57 def __init__(self, vnfd_helper, ssh_helper, scenario_helper):
58 super(SetupEnvHelper, self).__init__()
59 self.vnfd_helper = vnfd_helper
60 self.ssh_helper = ssh_helper
61 self.scenario_helper = scenario_helper
62 self.collectd_options = {}
64 def build_config(self):
65 raise NotImplementedError
67 def setup_vnf_environment(self):
74 raise NotImplementedError
77 class DpdkVnfSetupEnvHelper(SetupEnvHelper):
80 FIND_NET_CMD = "find /sys/class/net -lname '*{}*' -printf '%f'"
81 NR_HUGEPAGES_PATH = '/proc/sys/vm/nr_hugepages'
84 def _update_packet_type(ip_pipeline_cfg, traffic_options):
85 match_str = 'pkt_type = ipv4'
86 replace_str = 'pkt_type = {0}'.format(traffic_options['pkt_type'])
87 pipeline_config_str = ip_pipeline_cfg.replace(match_str, replace_str)
88 return pipeline_config_str
91 def _update_traffic_type(cls, ip_pipeline_cfg, traffic_options):
92 traffic_type = traffic_options['traffic_type']
94 if traffic_options['vnf_type'] is not cls.APP_NAME:
95 match_str = 'traffic_type = 4'
96 replace_str = 'traffic_type = {0}'.format(traffic_type)
98 elif traffic_type == 4:
99 match_str = 'pkt_type = ipv4'
100 replace_str = 'pkt_type = ipv4'
103 match_str = 'pkt_type = ipv4'
104 replace_str = 'pkt_type = ipv6'
106 pipeline_config_str = ip_pipeline_cfg.replace(match_str, replace_str)
107 return pipeline_config_str
109 def __init__(self, vnfd_helper, ssh_helper, scenario_helper):
110 super(DpdkVnfSetupEnvHelper, self).__init__(vnfd_helper, ssh_helper, scenario_helper)
111 self.all_ports = None
112 self.bound_pci = None
114 self.used_drivers = None
115 self.dpdk_bind_helper = DpdkBindHelper(ssh_helper)
117 def _setup_hugepages(self):
118 meminfo = utils.read_meminfo(self.ssh_helper)
119 hp_size_kb = int(meminfo['Hugepagesize'])
120 hugepages_gb = self.scenario_helper.all_options.get('hugepages_gb', 16)
121 nr_hugepages = int(abs(hugepages_gb * 1024 * 1024 / hp_size_kb))
122 self.ssh_helper.execute('echo %s | sudo tee %s' %
123 (nr_hugepages, self.NR_HUGEPAGES_PATH))
125 self.ssh_helper.get_file_obj(self.NR_HUGEPAGES_PATH, hp)
126 nr_hugepages_set = int(hp.getvalue().decode('utf-8').splitlines()[0])
127 LOG.info('Hugepages size (kB): %s, number claimed: %s, number set: %s',
128 hp_size_kb, nr_hugepages, nr_hugepages_set)
130 def build_config(self):
131 vnf_cfg = self.scenario_helper.vnf_cfg
132 task_path = self.scenario_helper.task_path
134 config_file = vnf_cfg.get('file')
135 lb_count = vnf_cfg.get('lb_count', 3)
136 lb_config = vnf_cfg.get('lb_config', 'SW')
137 worker_config = vnf_cfg.get('worker_config', '1C/1T')
138 worker_threads = vnf_cfg.get('worker_threads', 3)
140 traffic_type = self.scenario_helper.all_options.get('traffic_type', 4)
142 'traffic_type': traffic_type,
143 'pkt_type': 'ipv%s' % traffic_type,
144 'vnf_type': self.VNF_TYPE,
147 config_tpl_cfg = utils.find_relative_file(self.DEFAULT_CONFIG_TPL_CFG,
149 config_basename = posixpath.basename(self.CFG_CONFIG)
150 script_basename = posixpath.basename(self.CFG_SCRIPT)
151 multiport = MultiPortConfig(self.scenario_helper.topology,
162 multiport.generate_config()
164 with utils.open_relative_file(config_file, task_path) as infile:
165 new_config = ['[EAL]']
167 for port in self.vnfd_helper.port_pairs.all_ports:
168 interface = self.vnfd_helper.find_interface(name=port)
169 vpci.append(interface['virtual-interface']["vpci"])
170 new_config.extend('w = {0}'.format(item) for item in vpci)
171 new_config = '\n'.join(new_config) + '\n' + infile.read()
173 with open(self.CFG_CONFIG) as handle:
174 new_config = handle.read()
175 new_config = self._update_traffic_type(new_config, traffic_options)
176 new_config = self._update_packet_type(new_config, traffic_options)
177 self.ssh_helper.upload_config_file(config_basename, new_config)
178 self.ssh_helper.upload_config_file(script_basename,
179 multiport.generate_script(self.vnfd_helper))
181 LOG.info("Provision and start the %s", self.APP_NAME)
182 self._build_pipeline_kwargs()
183 return self.PIPELINE_COMMAND.format(**self.pipeline_kwargs)
185 def _build_pipeline_kwargs(self):
186 tool_path = self.ssh_helper.provision_tool(tool_file=self.APP_NAME)
187 # count the number of actual ports in the list of pairs
188 # remove duplicate ports
189 # this is really a mapping from LINK ID to DPDK PMD ID
190 # e.g. 0x110 maps LINK0 -> PMD_ID_1, LINK1 -> PMD_ID_2
191 # 0x1010 maps LINK0 -> PMD_ID_1, LINK1 -> PMD_ID_3
192 ports = self.vnfd_helper.port_pairs.all_ports
193 port_nums = self.vnfd_helper.port_nums(ports)
194 # create mask from all the dpdk port numbers
195 ports_mask_hex = hex(sum(2 ** num for num in port_nums))
197 vnf_cfg = self.scenario_helper.vnf_cfg
198 lb_config = vnf_cfg.get('lb_config', 'SW')
199 worker_threads = vnf_cfg.get('worker_threads', 3)
201 if lb_config == 'HW':
202 hwlb = ' --hwlb %s' % worker_threads
204 self.pipeline_kwargs = {
205 'cfg_file': self.CFG_CONFIG,
206 'script': self.CFG_SCRIPT,
207 'port_mask_hex': ports_mask_hex,
208 'tool_path': tool_path,
212 def setup_vnf_environment(self):
215 # bind before _setup_resources so we can use dpdk_port_num
216 self._detect_and_bind_drivers()
217 resource = self._setup_resources()
221 # pkill is not matching, debug with pgrep
222 self.ssh_helper.execute("sudo pgrep -lax %s" % self.APP_NAME)
223 self.ssh_helper.execute("sudo ps aux | grep -i %s" % self.APP_NAME)
224 # have to use exact match
225 # try using killall to match
226 self.ssh_helper.execute("sudo killall %s" % self.APP_NAME)
228 def _setup_dpdk(self):
229 """Setup DPDK environment needed for VNF to run"""
230 self._setup_hugepages()
231 self.dpdk_bind_helper.load_dpdk_driver()
233 exit_status = self.dpdk_bind_helper.check_dpdk_driver()
237 def _setup_resources(self):
238 # what is this magic? how do we know which socket is for which port?
239 # what about quad-socket?
240 if any(v[5] == "0" for v in self.bound_pci):
245 # implicit ordering, presumably by DPDK port num, so pre-sort by port_num
246 # this won't work because we don't have DPDK port numbers yet
247 ports = sorted(self.vnfd_helper.interfaces, key=self.vnfd_helper.port_num)
248 port_names = (intf["name"] for intf in ports)
249 plugins = self.collectd_options.get("plugins", {})
250 interval = self.collectd_options.get("interval")
251 # we must set timeout to be the same as the VNF otherwise KPIs will die before VNF
252 return ResourceProfile(self.vnfd_helper.mgmt_interface, port_names=port_names,
253 plugins=plugins, interval=interval,
254 timeout=self.scenario_helper.timeout)
256 def _check_interface_fields(self):
257 num_nodes = len(self.scenario_helper.nodes)
258 # OpenStack instance creation time is probably proportional to the number
260 timeout = 120 * num_nodes
261 dpdk_node = DpdkNode(self.scenario_helper.name, self.vnfd_helper.interfaces,
262 self.ssh_helper, timeout)
265 def _detect_and_bind_drivers(self):
266 interfaces = self.vnfd_helper.interfaces
268 self._check_interface_fields()
269 # check for bound after probe
270 self.bound_pci = [v['virtual-interface']["vpci"] for v in interfaces]
272 self.dpdk_bind_helper.read_status()
273 self.dpdk_bind_helper.save_used_drivers()
275 self.dpdk_bind_helper.bind(self.bound_pci, 'igb_uio')
277 sorted_dpdk_pci_addresses = sorted(self.dpdk_bind_helper.dpdk_bound_pci_addresses)
278 for dpdk_port_num, vpci in enumerate(sorted_dpdk_pci_addresses):
280 intf = next(v for v in interfaces
281 if vpci == v['virtual-interface']['vpci'])
283 intf['virtual-interface']['dpdk_port_num'] = int(dpdk_port_num)
284 except: # pylint: disable=bare-except
288 def get_local_iface_name_by_vpci(self, vpci):
289 find_net_cmd = self.FIND_NET_CMD.format(vpci)
290 exit_status, stdout, _ = self.ssh_helper.execute(find_net_cmd)
296 self.dpdk_bind_helper.rebind_drivers()
299 class ResourceHelper(object):
302 MAKE_INSTALL = 'cd {0} && make && sudo make install'
303 RESOURCE_WORD = 'sample'
307 def __init__(self, setup_helper):
308 super(ResourceHelper, self).__init__()
310 self.setup_helper = setup_helper
311 self.ssh_helper = setup_helper.ssh_helper
314 self.resource = self.setup_helper.setup_vnf_environment()
316 def generate_cfg(self):
319 def _collect_resource_kpi(self):
321 status = self.resource.check_if_system_agent_running("collectd")[0]
323 result = self.resource.amqp_collect_nfvi_kpi()
325 result = {"core": result}
328 def start_collect(self):
329 self.resource.initiate_systemagent(self.ssh_helper.bin_path)
330 self.resource.start()
331 self.resource.amqp_process_for_nfvi_kpi()
333 def stop_collect(self):
337 def collect_kpi(self):
338 return self._collect_resource_kpi()
341 class ClientResourceHelper(ResourceHelper):
348 def __init__(self, setup_helper):
349 super(ClientResourceHelper, self).__init__(setup_helper)
350 self.vnfd_helper = setup_helper.vnfd_helper
351 self.scenario_helper = setup_helper.scenario_helper
354 self.client_started = Value('i', 0)
355 self.all_ports = None
356 self._queue = Queue()
358 self._terminated = Value('i', 0)
360 def _build_ports(self):
361 self.networks = self.vnfd_helper.port_pairs.networks
362 self.uplink_ports = self.vnfd_helper.port_nums(self.vnfd_helper.port_pairs.uplink_ports)
363 self.downlink_ports = \
364 self.vnfd_helper.port_nums(self.vnfd_helper.port_pairs.downlink_ports)
365 self.all_ports = self.vnfd_helper.port_nums(self.vnfd_helper.port_pairs.all_ports)
367 def port_num(self, intf):
368 # by default return port num
369 return self.vnfd_helper.port_num(intf)
371 def get_stats(self, *args, **kwargs):
373 return self.client.get_stats(*args, **kwargs)
375 LOG.error('TRex client not connected')
378 def generate_samples(self, ports, key=None, default=None):
379 # needs to be used ports
380 last_result = self.get_stats(ports)
381 key_value = last_result.get(key, default)
383 if not isinstance(last_result, Mapping): # added for mock unit test
384 self._terminated.value = 1
388 # recalculate port for interface and see if it matches ports provided
389 for intf in self.vnfd_helper.interfaces:
391 port = self.vnfd_helper.port_num(name)
393 xe_value = last_result.get(port, {})
395 "rx_throughput_fps": float(xe_value.get("rx_pps", 0.0)),
396 "tx_throughput_fps": float(xe_value.get("tx_pps", 0.0)),
397 "rx_throughput_mbps": float(xe_value.get("rx_bps", 0.0)),
398 "tx_throughput_mbps": float(xe_value.get("tx_bps", 0.0)),
399 "in_packets": int(xe_value.get("ipackets", 0)),
400 "out_packets": int(xe_value.get("opackets", 0)),
403 samples[name][key] = key_value
406 def _run_traffic_once(self, traffic_profile):
407 traffic_profile.execute_traffic(self)
408 self.client_started.value = 1
409 time.sleep(self.RUN_DURATION)
410 samples = self.generate_samples(traffic_profile.ports)
411 time.sleep(self.QUEUE_WAIT_TIME)
412 self._queue.put(samples)
414 def run_traffic(self, traffic_profile):
415 # if we don't do this we can hang waiting for the queue to drain
416 # have to do this in the subprocess
417 self._queue.cancel_join_thread()
418 # fixme: fix passing correct trex config file,
419 # instead of searching the default path
422 self.client = self._connect()
423 self.client.reset(ports=self.all_ports)
424 self.client.remove_all_streams(self.all_ports) # remove all streams
425 traffic_profile.register_generator(self)
427 while self._terminated.value == 0:
428 self._run_traffic_once(traffic_profile)
430 self.client.stop(self.all_ports)
431 self.client.disconnect()
432 self._terminated.value = 0
434 if self._terminated.value:
435 LOG.debug("traffic generator is stopped")
436 return # return if trex/tg server is stopped.
440 self._terminated.value = 1 # stop client
442 def clear_stats(self, ports=None):
444 ports = self.all_ports
445 self.client.clear_stats(ports=ports)
447 def start(self, ports=None, *args, **kwargs):
448 # pylint: disable=keyword-arg-before-vararg
449 # NOTE(ralonsoh): defining keyworded arguments before variable
450 # positional arguments is a bug. This function definition doesn't work
451 # in Python 2, although it works in Python 3. Reference:
452 # https://www.python.org/dev/peps/pep-3102/
454 ports = self.all_ports
455 self.client.start(ports=ports, *args, **kwargs)
457 def collect_kpi(self):
458 if not self._queue.empty():
459 kpi = self._queue.get()
460 self._result.update(kpi)
461 LOG.debug('Got KPIs from _queue for %s %s',
462 self.scenario_helper.name, self.RESOURCE_WORD)
465 def _connect(self, client=None):
467 client = STLClient(username=self.vnfd_helper.mgmt_interface["user"],
468 server=self.vnfd_helper.mgmt_interface["ip"],
469 verbose_level=LoggerApi.VERBOSE_QUIET)
471 # try to connect with 5s intervals, 30s max
477 LOG.info("Unable to connect to Trex Server.. Attempt %s", idx)
482 class Rfc2544ResourceHelper(object):
484 DEFAULT_CORRELATED_TRAFFIC = False
485 DEFAULT_LATENCY = False
486 DEFAULT_TOLERANCE = '0.0001 - 0.0001'
488 def __init__(self, scenario_helper):
489 super(Rfc2544ResourceHelper, self).__init__()
490 self.scenario_helper = scenario_helper
491 self._correlated_traffic = None
492 self.iteration = Value('i', 0)
495 self._tolerance_low = None
496 self._tolerance_high = None
500 if self._rfc2544 is None:
501 self._rfc2544 = self.scenario_helper.all_options['rfc2544']
505 def tolerance_low(self):
506 if self._tolerance_low is None:
507 self.get_rfc_tolerance()
508 return self._tolerance_low
511 def tolerance_high(self):
512 if self._tolerance_high is None:
513 self.get_rfc_tolerance()
514 return self._tolerance_high
517 def correlated_traffic(self):
518 if self._correlated_traffic is None:
519 self._correlated_traffic = \
520 self.get_rfc2544('correlated_traffic', self.DEFAULT_CORRELATED_TRAFFIC)
522 return self._correlated_traffic
526 if self._latency is None:
527 self._latency = self.get_rfc2544('latency', self.DEFAULT_LATENCY)
530 def get_rfc2544(self, name, default=None):
531 return self.rfc2544.get(name, default)
533 def get_rfc_tolerance(self):
534 tolerance_str = self.get_rfc2544('allowed_drop_rate', self.DEFAULT_TOLERANCE)
535 tolerance_iter = iter(sorted(float(t.strip()) for t in tolerance_str.split('-')))
536 self._tolerance_low = next(tolerance_iter)
537 self._tolerance_high = next(tolerance_iter, self.tolerance_low)
540 class SampleVNFDeployHelper(object):
542 SAMPLE_VNF_REPO = 'https://gerrit.opnfv.org/gerrit/samplevnf'
543 REPO_NAME = posixpath.basename(SAMPLE_VNF_REPO)
544 SAMPLE_REPO_DIR = os.path.join('~/', REPO_NAME)
546 def __init__(self, vnfd_helper, ssh_helper):
547 super(SampleVNFDeployHelper, self).__init__()
548 self.ssh_helper = ssh_helper
549 self.vnfd_helper = vnfd_helper
551 def deploy_vnfs(self, app_name):
552 vnf_bin = self.ssh_helper.join_bin_path(app_name)
553 exit_status = self.ssh_helper.execute("which %s" % vnf_bin)[0]
557 subprocess.check_output(["rm", "-rf", self.REPO_NAME])
558 subprocess.check_output(["git", "clone", self.SAMPLE_VNF_REPO])
560 self.ssh_helper.execute("rm -rf %s" % self.SAMPLE_REPO_DIR)
561 self.ssh_helper.put(self.REPO_NAME, self.SAMPLE_REPO_DIR, True)
563 build_script = os.path.join(self.SAMPLE_REPO_DIR, 'tools/vnf_build.sh')
565 http_proxy = os.environ.get('http_proxy', '')
566 cmd = "sudo -E %s -s -p='%s'" % (build_script, http_proxy)
568 self.ssh_helper.execute(cmd)
569 vnf_bin_loc = os.path.join(self.SAMPLE_REPO_DIR, "VNFs", app_name, "build", app_name)
570 self.ssh_helper.execute("sudo mkdir -p %s" % self.ssh_helper.bin_path)
571 self.ssh_helper.execute("sudo cp %s %s" % (vnf_bin_loc, vnf_bin))
574 class ScenarioHelper(object):
579 'worker_config': '1C/1T',
583 def __init__(self, name):
585 self.scenario_cfg = None
589 return self.scenario_cfg['task_path']
593 return self.scenario_cfg.get('nodes')
596 def all_options(self):
597 return self.scenario_cfg.get('options', {})
601 return self.all_options.get(self.name, {})
605 return self.options.get('vnf_config', self.DEFAULT_VNF_CFG)
609 return self.scenario_cfg['topology']
613 test_duration = self.scenario_cfg.get('runner', {}).get('duration',
614 self.options.get('timeout', constants.DEFAULT_VNF_TIMEOUT))
615 test_timeout = self.options.get('timeout', constants.DEFAULT_VNF_TIMEOUT)
616 return test_duration if test_duration > test_timeout else test_timeout
618 class SampleVNF(GenericVNF):
619 """ Class providing file-like API for generic VNF implementation """
621 VNF_PROMPT = "pipeline>"
623 WAIT_TIME_FOR_SCRIPT = 10
624 APP_NAME = "SampleVNF"
625 # we run the VNF interactively, so the ssh command will timeout after this long
627 def __init__(self, name, vnfd, setup_env_helper_type=None, resource_helper_type=None):
628 super(SampleVNF, self).__init__(name, vnfd)
629 self.bin_path = get_nsb_option('bin_path', '')
631 self.scenario_helper = ScenarioHelper(self.name)
632 self.ssh_helper = VnfSshHelper(self.vnfd_helper.mgmt_interface, self.bin_path)
634 if setup_env_helper_type is None:
635 setup_env_helper_type = SetupEnvHelper
637 self.setup_helper = setup_env_helper_type(self.vnfd_helper,
639 self.scenario_helper)
641 self.deploy_helper = SampleVNFDeployHelper(vnfd, self.ssh_helper)
643 if resource_helper_type is None:
644 resource_helper_type = ResourceHelper
646 self.resource_helper = resource_helper_type(self.setup_helper)
648 self.context_cfg = None
649 self.nfvi_context = None
650 self.pipeline_kwargs = {}
651 self.uplink_ports = None
652 self.downlink_ports = None
653 # NOTE(esm): make QueueFileWrapper invert-able so that we
654 # never have to manage the queues
657 self.queue_wrapper = None
659 self.used_drivers = {}
660 self.vnf_port_pairs = None
661 self._vnf_process = None
663 def _start_vnf(self):
664 self.queue_wrapper = QueueFileWrapper(self.q_in, self.q_out, self.VNF_PROMPT)
665 name = "{}-{}-{}".format(self.name, self.APP_NAME, os.getpid())
666 self._vnf_process = Process(name=name, target=self._run)
667 self._vnf_process.start()
669 def _vnf_up_post(self):
672 def instantiate(self, scenario_cfg, context_cfg):
673 self._update_collectd_options(scenario_cfg, context_cfg)
674 self.scenario_helper.scenario_cfg = scenario_cfg
675 self.context_cfg = context_cfg
676 self.nfvi_context = Context.get_context_from_server(self.scenario_helper.nodes[self.name])
677 # self.nfvi_context = None
679 # vnf deploy is unsupported, use ansible playbooks
680 if self.scenario_helper.options.get("vnf_deploy", False):
681 self.deploy_helper.deploy_vnfs(self.APP_NAME)
682 self.resource_helper.setup()
685 def _update_collectd_options(self, scenario_cfg, context_cfg):
686 """Update collectd configuration options
687 This function retrieves all collectd options contained in the test case
689 definition builds a single dictionary combining them. The following fragment
690 represents a test case with the collectd options and priorities (1 highest, 3 lowest):
692 schema: yardstick:task:0.1
696 tg__0: trafficgen_1.yardstick
697 vnf__0: vnf.yardstick
700 <options> # COLLECTD priority 3
705 <options> # COLLECTD priority 2
710 file: /etc/yardstick/nodes/pod_ixia.yaml # COLLECTD priority 1
712 scenario_options = scenario_cfg.get('options', {})
713 generic_options = scenario_options.get('collectd', {})
714 scenario_node_options = scenario_options.get(self.name, {})\
716 context_node_options = context_cfg.get('nodes', {})\
717 .get(self.name, {}).get('collectd', {})
719 options = generic_options
720 self._update_options(options, scenario_node_options)
721 self._update_options(options, context_node_options)
723 self.setup_helper.collectd_options = options
725 def _update_options(self, options, additional_options):
726 """Update collectd options and plugins dictionary"""
727 for k, v in additional_options.items():
728 if isinstance(v, dict) and k in options:
733 def wait_for_instantiate(self):
735 time.sleep(self.WAIT_TIME) # Give some time for config to load
737 if not self._vnf_process.is_alive():
738 raise RuntimeError("%s VNF process died." % self.APP_NAME)
740 # NOTE(esm): move to QueueFileWrapper
741 while self.q_out.qsize() > 0:
742 buf.append(self.q_out.get())
743 message = ''.join(buf)
744 if self.VNF_PROMPT in message:
745 LOG.info("%s VNF is up and running.", self.APP_NAME)
747 self.queue_wrapper.clear()
748 return self._vnf_process.exitcode
750 if "PANIC" in message:
751 raise RuntimeError("Error starting %s VNF." %
754 LOG.info("Waiting for %s VNF to start.. ", self.APP_NAME)
755 time.sleep(self.WAIT_TIME_FOR_SCRIPT)
756 # Send ENTER to display a new prompt in case the prompt text was corrupted
757 # by other VNF output
758 self.q_in.put('\r\n')
760 def start_collect(self):
761 self.resource_helper.start_collect()
763 def stop_collect(self):
764 self.resource_helper.stop_collect()
766 def _build_run_kwargs(self):
768 'stdin': self.queue_wrapper,
769 'stdout': self.queue_wrapper,
770 'keep_stdin_open': True,
772 'timeout': self.scenario_helper.timeout,
775 def _build_config(self):
776 return self.setup_helper.build_config()
779 # we can't share ssh paramiko objects to force new connection
780 self.ssh_helper.drop_connection()
781 cmd = self._build_config()
782 # kill before starting
783 self.setup_helper.kill_vnf()
786 self._build_run_kwargs()
787 self.ssh_helper.run(cmd, **self.run_kwargs)
789 def vnf_execute(self, cmd, wait_time=2):
790 """ send cmd to vnf process """
792 LOG.info("%s command: %s", self.APP_NAME, cmd)
793 self.q_in.put("{}\r\n".format(cmd))
794 time.sleep(wait_time)
796 while self.q_out.qsize() > 0:
797 output.append(self.q_out.get())
798 return "".join(output)
800 def _tear_down(self):
804 self.vnf_execute("quit")
805 self.setup_helper.kill_vnf()
807 self.resource_helper.stop_collect()
808 if self._vnf_process is not None:
809 # be proper and join first before we kill
810 LOG.debug("joining before terminate %s", self._vnf_process.name)
811 self._vnf_process.join(constants.PROCESS_JOIN_TIMEOUT)
812 self._vnf_process.terminate()
813 # no terminate children here because we share processes with tg
815 def get_stats(self, *args, **kwargs): # pylint: disable=unused-argument
816 """Method for checking the statistics
818 This method could be overridden in children classes.
820 :return: VNF statistics
822 cmd = 'p {0} stats'.format(self.APP_WORD)
823 out = self.vnf_execute(cmd)
826 def collect_kpi(self):
827 # we can't get KPIs if the VNF is down
828 check_if_process_failed(self._vnf_process, 0.01)
829 stats = self.get_stats()
830 m = re.search(self.COLLECT_KPI, stats, re.MULTILINE)
832 result = {k: int(m.group(v)) for k, v in self.COLLECT_MAP.items()}
833 result["collect_stats"] = self.resource_helper.collect_kpi()
838 "packets_dropped": 0,
840 LOG.debug("%s collect KPIs %s", self.APP_NAME, result)
843 def scale(self, flavor=""):
844 """The SampleVNF base class doesn't provide the 'scale' feature"""
845 raise y_exceptions.FunctionNotImplemented(
846 function_name='scale', class_name='SampleVNFTrafficGen')
849 class SampleVNFTrafficGen(GenericTrafficGen):
850 """ Class providing file-like API for generic traffic generator """
855 def __init__(self, name, vnfd, setup_env_helper_type=None, resource_helper_type=None):
856 super(SampleVNFTrafficGen, self).__init__(name, vnfd)
857 self.bin_path = get_nsb_option('bin_path', '')
859 self.scenario_helper = ScenarioHelper(self.name)
860 self.ssh_helper = VnfSshHelper(self.vnfd_helper.mgmt_interface, self.bin_path, wait=True)
862 if setup_env_helper_type is None:
863 setup_env_helper_type = SetupEnvHelper
865 self.setup_helper = setup_env_helper_type(self.vnfd_helper,
867 self.scenario_helper)
869 if resource_helper_type is None:
870 resource_helper_type = ClientResourceHelper
872 self.resource_helper = resource_helper_type(self.setup_helper)
874 self.runs_traffic = True
875 self.traffic_finished = False
876 self._tg_process = None
877 self._traffic_process = None
879 def _start_server(self):
880 # we can't share ssh paramiko objects to force new connection
881 self.ssh_helper.drop_connection()
883 def instantiate(self, scenario_cfg, context_cfg):
884 self.scenario_helper.scenario_cfg = scenario_cfg
885 self.resource_helper.setup()
886 # must generate_cfg after DPDK bind because we need port number
887 self.resource_helper.generate_cfg()
889 LOG.info("Starting %s server...", self.APP_NAME)
890 name = "{}-{}-{}".format(self.name, self.APP_NAME, os.getpid())
891 self._tg_process = Process(name=name, target=self._start_server)
892 self._tg_process.start()
894 def _check_status(self):
895 raise NotImplementedError
897 def _wait_for_process(self):
899 if not self._tg_process.is_alive():
900 raise RuntimeError("%s traffic generator process died." % self.APP_NAME)
901 LOG.info("Waiting for %s TG Server to start.. ", self.APP_NAME)
903 status = self._check_status()
905 LOG.info("%s TG Server is up and running.", self.APP_NAME)
906 return self._tg_process.exitcode
908 def _traffic_runner(self, traffic_profile):
909 # always drop connections first thing in new processes
910 # so we don't get paramiko errors
911 self.ssh_helper.drop_connection()
912 LOG.info("Starting %s client...", self.APP_NAME)
913 self.resource_helper.run_traffic(traffic_profile)
915 def run_traffic(self, traffic_profile):
916 """ Generate traffic on the wire according to the given params.
917 Method is non-blocking, returns immediately when traffic process
918 is running. Mandatory.
920 :param traffic_profile:
923 name = "{}-{}-{}-{}".format(self.name, self.APP_NAME, traffic_profile.__class__.__name__,
925 self._traffic_process = Process(name=name, target=self._traffic_runner,
926 args=(traffic_profile,))
927 self._traffic_process.start()
928 # Wait for traffic process to start
929 while self.resource_helper.client_started.value == 0:
930 time.sleep(self.RUN_WAIT)
931 # what if traffic process takes a few seconds to start?
932 if not self._traffic_process.is_alive():
935 return self._traffic_process.is_alive()
937 def collect_kpi(self):
938 # check if the tg processes have exited
939 for proc in (self._tg_process, self._traffic_process):
940 check_if_process_failed(proc)
941 result = self.resource_helper.collect_kpi()
942 LOG.debug("%s collect KPIs %s", self.APP_NAME, result)
946 """ After this method finishes, all traffic processes should stop. Mandatory.
950 self.traffic_finished = True
951 # we must kill client before we kill the server, or the client will raise exception
952 if self._traffic_process is not None:
953 # be proper and try to join before terminating
954 LOG.debug("joining before terminate %s", self._traffic_process.name)
955 self._traffic_process.join(constants.PROCESS_JOIN_TIMEOUT)
956 self._traffic_process.terminate()
957 if self._tg_process is not None:
958 # be proper and try to join before terminating
959 LOG.debug("joining before terminate %s", self._tg_process.name)
960 self._tg_process.join(constants.PROCESS_JOIN_TIMEOUT)
961 self._tg_process.terminate()
962 # no terminate children here because we share processes with vnf
964 def scale(self, flavor=""):
965 """A traffic generator VFN doesn't provide the 'scale' feature"""
966 raise y_exceptions.FunctionNotImplemented(
967 function_name='scale', class_name='SampleVNFTrafficGen')