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.
16 from multiprocessing import Queue, Value, Process
25 from trex_stl_lib.trex_stl_client import LoggerApi
26 from trex_stl_lib.trex_stl_client import STLClient
27 from trex_stl_lib.trex_stl_exceptions import STLError
28 from yardstick.benchmark.contexts.base import Context
29 from yardstick.common import exceptions as y_exceptions
30 from yardstick.common.process import check_if_process_failed
31 from yardstick.common import utils
32 from yardstick.common import yaml_loader
33 from yardstick.network_services import constants
34 from yardstick.network_services.helpers.dpdkbindnic_helper import DpdkBindHelper, DpdkNode
35 from yardstick.network_services.helpers.samplevnf_helper import MultiPortConfig
36 from yardstick.network_services.nfvi.resource import ResourceProfile
37 from yardstick.network_services.utils import get_nsb_option
38 from yardstick.network_services.vnf_generic.vnf.base import GenericTrafficGen
39 from yardstick.network_services.vnf_generic.vnf.base import GenericVNF
40 from yardstick.network_services.vnf_generic.vnf.base import QueueFileWrapper
41 from yardstick.network_services.vnf_generic.vnf.vnf_ssh_helper import VnfSshHelper
44 LOG = logging.getLogger(__name__)
47 class SetupEnvHelper(object):
49 CFG_CONFIG = os.path.join(constants.REMOTE_TMP, "sample_config")
50 CFG_SCRIPT = os.path.join(constants.REMOTE_TMP, "sample_script")
51 DEFAULT_CONFIG_TPL_CFG = "sample.cfg"
55 def __init__(self, vnfd_helper, ssh_helper, scenario_helper):
56 super(SetupEnvHelper, self).__init__()
57 self.vnfd_helper = vnfd_helper
58 self.ssh_helper = ssh_helper
59 self.scenario_helper = scenario_helper
60 self.collectd_options = {}
62 def build_config(self):
63 raise NotImplementedError
65 def setup_vnf_environment(self):
72 raise NotImplementedError
75 class DpdkVnfSetupEnvHelper(SetupEnvHelper):
78 FIND_NET_CMD = "find /sys/class/net -lname '*{}*' -printf '%f'"
79 NR_HUGEPAGES_PATH = '/proc/sys/vm/nr_hugepages'
82 def _update_packet_type(ip_pipeline_cfg, traffic_options):
83 match_str = 'pkt_type = ipv4'
84 replace_str = 'pkt_type = {0}'.format(traffic_options['pkt_type'])
85 pipeline_config_str = ip_pipeline_cfg.replace(match_str, replace_str)
86 return pipeline_config_str
89 def _update_traffic_type(cls, ip_pipeline_cfg, traffic_options):
90 traffic_type = traffic_options['traffic_type']
92 if traffic_options['vnf_type'] is not cls.APP_NAME:
93 match_str = 'traffic_type = 4'
94 replace_str = 'traffic_type = {0}'.format(traffic_type)
96 elif traffic_type == 4:
97 match_str = 'pkt_type = ipv4'
98 replace_str = 'pkt_type = ipv4'
101 match_str = 'pkt_type = ipv4'
102 replace_str = 'pkt_type = ipv6'
104 pipeline_config_str = ip_pipeline_cfg.replace(match_str, replace_str)
105 return pipeline_config_str
107 def __init__(self, vnfd_helper, ssh_helper, scenario_helper):
108 super(DpdkVnfSetupEnvHelper, self).__init__(vnfd_helper, ssh_helper, scenario_helper)
109 self.all_ports = None
110 self.bound_pci = None
112 self.used_drivers = None
113 self.dpdk_bind_helper = DpdkBindHelper(ssh_helper)
115 def _setup_hugepages(self):
116 meminfo = utils.read_meminfo(self.ssh_helper)
117 hp_size_kb = int(meminfo['Hugepagesize'])
118 hugepages_gb = self.scenario_helper.all_options.get('hugepages_gb', 16)
119 nr_hugepages = int(abs(hugepages_gb * 1024 * 1024 / hp_size_kb))
120 self.ssh_helper.execute('echo %s | sudo tee %s' %
121 (nr_hugepages, self.NR_HUGEPAGES_PATH))
123 self.ssh_helper.get_file_obj(self.NR_HUGEPAGES_PATH, hp)
124 nr_hugepages_set = int(hp.getvalue().decode('utf-8').splitlines()[0])
125 LOG.info('Hugepages size (kB): %s, number claimed: %s, number set: %s',
126 hp_size_kb, nr_hugepages, nr_hugepages_set)
128 def build_config(self):
129 vnf_cfg = self.scenario_helper.vnf_cfg
130 task_path = self.scenario_helper.task_path
132 config_file = vnf_cfg.get('file')
133 lb_count = vnf_cfg.get('lb_count', 3)
134 lb_config = vnf_cfg.get('lb_config', 'SW')
135 worker_config = vnf_cfg.get('worker_config', '1C/1T')
136 worker_threads = vnf_cfg.get('worker_threads', 3)
138 traffic_type = self.scenario_helper.all_options.get('traffic_type', 4)
140 'traffic_type': traffic_type,
141 'pkt_type': 'ipv%s' % traffic_type,
142 'vnf_type': self.VNF_TYPE,
145 # read actions/rules from file
147 acl_file_name = self.scenario_helper.options.get('rules')
149 with utils.open_relative_file(acl_file_name, task_path) as infile:
150 acl_options = yaml_loader.yaml_load(infile)
152 config_tpl_cfg = utils.find_relative_file(self.DEFAULT_CONFIG_TPL_CFG,
154 config_basename = posixpath.basename(self.CFG_CONFIG)
155 script_basename = posixpath.basename(self.CFG_SCRIPT)
156 multiport = MultiPortConfig(self.scenario_helper.topology,
167 multiport.generate_config()
169 with utils.open_relative_file(config_file, task_path) as infile:
170 new_config = ['[EAL]']
172 for port in self.vnfd_helper.port_pairs.all_ports:
173 interface = self.vnfd_helper.find_interface(name=port)
174 vpci.append(interface['virtual-interface']["vpci"])
175 new_config.extend('w = {0}'.format(item) for item in vpci)
176 new_config = '\n'.join(new_config) + '\n' + infile.read()
178 with open(self.CFG_CONFIG) as handle:
179 new_config = handle.read()
180 new_config = self._update_traffic_type(new_config, traffic_options)
181 new_config = self._update_packet_type(new_config, traffic_options)
182 self.ssh_helper.upload_config_file(config_basename, new_config)
183 self.ssh_helper.upload_config_file(script_basename,
184 multiport.generate_script(self.vnfd_helper,
185 self.get_flows_config(acl_options)))
187 LOG.info("Provision and start the %s", self.APP_NAME)
188 self._build_pipeline_kwargs()
189 return self.PIPELINE_COMMAND.format(**self.pipeline_kwargs)
191 def get_flows_config(self, options=None): # pylint: disable=unused-argument
192 """No actions/rules (flows) by default"""
195 def _build_pipeline_kwargs(self):
196 tool_path = self.ssh_helper.provision_tool(tool_file=self.APP_NAME)
197 # count the number of actual ports in the list of pairs
198 # remove duplicate ports
199 # this is really a mapping from LINK ID to DPDK PMD ID
200 # e.g. 0x110 maps LINK0 -> PMD_ID_1, LINK1 -> PMD_ID_2
201 # 0x1010 maps LINK0 -> PMD_ID_1, LINK1 -> PMD_ID_3
202 ports = self.vnfd_helper.port_pairs.all_ports
203 port_nums = self.vnfd_helper.port_nums(ports)
204 # create mask from all the dpdk port numbers
205 ports_mask_hex = hex(sum(2 ** num for num in port_nums))
207 vnf_cfg = self.scenario_helper.vnf_cfg
208 lb_config = vnf_cfg.get('lb_config', 'SW')
209 worker_threads = vnf_cfg.get('worker_threads', 3)
211 if lb_config == 'HW':
212 hwlb = ' --hwlb %s' % worker_threads
214 self.pipeline_kwargs = {
215 'cfg_file': self.CFG_CONFIG,
216 'script': self.CFG_SCRIPT,
217 'port_mask_hex': ports_mask_hex,
218 'tool_path': tool_path,
222 def setup_vnf_environment(self):
225 # bind before _setup_resources so we can use dpdk_port_num
226 self._detect_and_bind_drivers()
227 resource = self._setup_resources()
231 # pkill is not matching, debug with pgrep
232 self.ssh_helper.execute("sudo pgrep -lax %s" % self.APP_NAME)
233 self.ssh_helper.execute("sudo ps aux | grep -i %s" % self.APP_NAME)
234 # have to use exact match
235 # try using killall to match
236 self.ssh_helper.execute("sudo killall %s" % self.APP_NAME)
238 def _setup_dpdk(self):
239 """Setup DPDK environment needed for VNF to run"""
240 self._setup_hugepages()
241 self.dpdk_bind_helper.load_dpdk_driver()
243 exit_status = self.dpdk_bind_helper.check_dpdk_driver()
247 def _setup_resources(self):
248 # what is this magic? how do we know which socket is for which port?
249 # what about quad-socket?
250 if any(v[5] == "0" for v in self.bound_pci):
255 # implicit ordering, presumably by DPDK port num, so pre-sort by port_num
256 # this won't work because we don't have DPDK port numbers yet
257 ports = sorted(self.vnfd_helper.interfaces, key=self.vnfd_helper.port_num)
258 port_names = (intf["name"] for intf in ports)
259 plugins = self.collectd_options.get("plugins", {})
260 interval = self.collectd_options.get("interval")
261 # we must set timeout to be the same as the VNF otherwise KPIs will die before VNF
262 return ResourceProfile(self.vnfd_helper.mgmt_interface, port_names=port_names,
263 plugins=plugins, interval=interval,
264 timeout=self.scenario_helper.timeout)
266 def _check_interface_fields(self):
267 num_nodes = len(self.scenario_helper.nodes)
268 # OpenStack instance creation time is probably proportional to the number
270 timeout = 120 * num_nodes
271 dpdk_node = DpdkNode(self.scenario_helper.name, self.vnfd_helper.interfaces,
272 self.ssh_helper, timeout)
275 def _detect_and_bind_drivers(self):
276 interfaces = self.vnfd_helper.interfaces
278 self._check_interface_fields()
279 # check for bound after probe
280 self.bound_pci = [v['virtual-interface']["vpci"] for v in interfaces]
282 self.dpdk_bind_helper.read_status()
283 self.dpdk_bind_helper.save_used_drivers()
285 self.dpdk_bind_helper.bind(self.bound_pci, 'igb_uio')
287 sorted_dpdk_pci_addresses = sorted(self.dpdk_bind_helper.dpdk_bound_pci_addresses)
288 for dpdk_port_num, vpci in enumerate(sorted_dpdk_pci_addresses):
290 intf = next(v for v in interfaces
291 if vpci == v['virtual-interface']['vpci'])
293 intf['virtual-interface']['dpdk_port_num'] = int(dpdk_port_num)
294 except: # pylint: disable=bare-except
298 def get_local_iface_name_by_vpci(self, vpci):
299 find_net_cmd = self.FIND_NET_CMD.format(vpci)
300 exit_status, stdout, _ = self.ssh_helper.execute(find_net_cmd)
306 self.dpdk_bind_helper.rebind_drivers()
309 class ResourceHelper(object):
312 MAKE_INSTALL = 'cd {0} && make && sudo make install'
313 RESOURCE_WORD = 'sample'
317 def __init__(self, setup_helper):
318 super(ResourceHelper, self).__init__()
320 self.setup_helper = setup_helper
321 self.ssh_helper = setup_helper.ssh_helper
324 self.resource = self.setup_helper.setup_vnf_environment()
326 def generate_cfg(self):
329 def _collect_resource_kpi(self):
331 status = self.resource.check_if_system_agent_running("collectd")[0]
333 result = self.resource.amqp_collect_nfvi_kpi()
335 result = {"core": result}
338 def start_collect(self):
339 self.resource.initiate_systemagent(self.ssh_helper.bin_path)
340 self.resource.start()
341 self.resource.amqp_process_for_nfvi_kpi()
343 def stop_collect(self):
347 def collect_kpi(self):
348 return self._collect_resource_kpi()
351 class ClientResourceHelper(ResourceHelper):
358 def __init__(self, setup_helper):
359 super(ClientResourceHelper, self).__init__(setup_helper)
360 self.vnfd_helper = setup_helper.vnfd_helper
361 self.scenario_helper = setup_helper.scenario_helper
364 self.client_started = Value('i', 0)
365 self.all_ports = None
366 self._queue = Queue()
368 self._terminated = Value('i', 0)
370 def _build_ports(self):
371 self.networks = self.vnfd_helper.port_pairs.networks
372 self.uplink_ports = self.vnfd_helper.port_nums(self.vnfd_helper.port_pairs.uplink_ports)
373 self.downlink_ports = \
374 self.vnfd_helper.port_nums(self.vnfd_helper.port_pairs.downlink_ports)
375 self.all_ports = self.vnfd_helper.port_nums(self.vnfd_helper.port_pairs.all_ports)
377 def port_num(self, intf):
378 # by default return port num
379 return self.vnfd_helper.port_num(intf)
381 def get_stats(self, *args, **kwargs):
383 return self.client.get_stats(*args, **kwargs)
385 LOG.error('TRex client not connected')
388 def _get_samples(self, ports, port_pg_id=False):
389 raise NotImplementedError()
391 def _run_traffic_once(self, traffic_profile):
392 traffic_profile.execute_traffic(self)
393 self.client_started.value = 1
394 time.sleep(self.RUN_DURATION)
395 samples = self._get_samples(traffic_profile.ports)
396 time.sleep(self.QUEUE_WAIT_TIME)
397 self._queue.put(samples)
399 def run_traffic(self, traffic_profile):
400 # if we don't do this we can hang waiting for the queue to drain
401 # have to do this in the subprocess
402 self._queue.cancel_join_thread()
403 # fixme: fix passing correct trex config file,
404 # instead of searching the default path
407 self.client = self._connect()
408 self.client.reset(ports=self.all_ports)
409 self.client.remove_all_streams(self.all_ports) # remove all streams
410 traffic_profile.register_generator(self)
412 while self._terminated.value == 0:
413 self._run_traffic_once(traffic_profile)
415 self.client.stop(self.all_ports)
416 self.client.disconnect()
417 self._terminated.value = 0
419 if self._terminated.value:
420 LOG.debug("traffic generator is stopped")
421 return # return if trex/tg server is stopped.
425 self._terminated.value = 1 # stop client
427 def clear_stats(self, ports=None):
429 ports = self.all_ports
430 self.client.clear_stats(ports=ports)
432 def start(self, ports=None, *args, **kwargs):
433 # pylint: disable=keyword-arg-before-vararg
434 # NOTE(ralonsoh): defining keyworded arguments before variable
435 # positional arguments is a bug. This function definition doesn't work
436 # in Python 2, although it works in Python 3. Reference:
437 # https://www.python.org/dev/peps/pep-3102/
439 ports = self.all_ports
440 self.client.start(ports=ports, *args, **kwargs)
442 def collect_kpi(self):
443 if not self._queue.empty():
444 kpi = self._queue.get()
445 self._result.update(kpi)
446 LOG.debug('Got KPIs from _queue for %s %s',
447 self.scenario_helper.name, self.RESOURCE_WORD)
450 def _connect(self, client=None):
452 client = STLClient(username=self.vnfd_helper.mgmt_interface["user"],
453 server=self.vnfd_helper.mgmt_interface["ip"],
454 verbose_level=LoggerApi.VERBOSE_QUIET)
456 # try to connect with 5s intervals, 30s max
462 LOG.info("Unable to connect to Trex Server.. Attempt %s", idx)
467 class Rfc2544ResourceHelper(object):
469 DEFAULT_CORRELATED_TRAFFIC = False
470 DEFAULT_LATENCY = False
471 DEFAULT_TOLERANCE = '0.0001 - 0.0001'
473 def __init__(self, scenario_helper):
474 super(Rfc2544ResourceHelper, self).__init__()
475 self.scenario_helper = scenario_helper
476 self._correlated_traffic = None
477 self.iteration = Value('i', 0)
480 self._tolerance_low = None
481 self._tolerance_high = None
485 if self._rfc2544 is None:
486 self._rfc2544 = self.scenario_helper.all_options['rfc2544']
490 def tolerance_low(self):
491 if self._tolerance_low is None:
492 self.get_rfc_tolerance()
493 return self._tolerance_low
496 def tolerance_high(self):
497 if self._tolerance_high is None:
498 self.get_rfc_tolerance()
499 return self._tolerance_high
502 def correlated_traffic(self):
503 if self._correlated_traffic is None:
504 self._correlated_traffic = \
505 self.get_rfc2544('correlated_traffic', self.DEFAULT_CORRELATED_TRAFFIC)
507 return self._correlated_traffic
511 if self._latency is None:
512 self._latency = self.get_rfc2544('latency', self.DEFAULT_LATENCY)
515 def get_rfc2544(self, name, default=None):
516 return self.rfc2544.get(name, default)
518 def get_rfc_tolerance(self):
519 tolerance_str = self.get_rfc2544('allowed_drop_rate', self.DEFAULT_TOLERANCE)
520 tolerance_iter = iter(sorted(float(t.strip()) for t in tolerance_str.split('-')))
521 self._tolerance_low = next(tolerance_iter)
522 self._tolerance_high = next(tolerance_iter, self.tolerance_low)
525 class SampleVNFDeployHelper(object):
527 SAMPLE_VNF_REPO = 'https://gerrit.opnfv.org/gerrit/samplevnf'
528 REPO_NAME = posixpath.basename(SAMPLE_VNF_REPO)
529 SAMPLE_REPO_DIR = os.path.join('~/', REPO_NAME)
531 def __init__(self, vnfd_helper, ssh_helper):
532 super(SampleVNFDeployHelper, self).__init__()
533 self.ssh_helper = ssh_helper
534 self.vnfd_helper = vnfd_helper
536 def deploy_vnfs(self, app_name):
537 vnf_bin = self.ssh_helper.join_bin_path(app_name)
538 exit_status = self.ssh_helper.execute("which %s" % vnf_bin)[0]
542 subprocess.check_output(["rm", "-rf", self.REPO_NAME])
543 subprocess.check_output(["git", "clone", self.SAMPLE_VNF_REPO])
545 self.ssh_helper.execute("rm -rf %s" % self.SAMPLE_REPO_DIR)
546 self.ssh_helper.put(self.REPO_NAME, self.SAMPLE_REPO_DIR, True)
548 build_script = os.path.join(self.SAMPLE_REPO_DIR, 'tools/vnf_build.sh')
550 http_proxy = os.environ.get('http_proxy', '')
551 cmd = "sudo -E %s -s -p='%s'" % (build_script, http_proxy)
553 self.ssh_helper.execute(cmd)
554 vnf_bin_loc = os.path.join(self.SAMPLE_REPO_DIR, "VNFs", app_name, "build", app_name)
555 self.ssh_helper.execute("sudo mkdir -p %s" % self.ssh_helper.bin_path)
556 self.ssh_helper.execute("sudo cp %s %s" % (vnf_bin_loc, vnf_bin))
559 class ScenarioHelper(object):
564 'worker_config': '1C/1T',
568 def __init__(self, name):
570 self.scenario_cfg = None
574 return self.scenario_cfg['task_path']
578 return self.scenario_cfg.get('nodes')
581 def all_options(self):
582 return self.scenario_cfg.get('options', {})
586 return self.all_options.get(self.name, {})
590 return self.options.get('vnf_config', self.DEFAULT_VNF_CFG)
594 return self.scenario_cfg['topology']
598 test_duration = self.scenario_cfg.get('runner', {}).get('duration',
599 self.options.get('timeout', constants.DEFAULT_VNF_TIMEOUT))
600 test_timeout = self.options.get('timeout', constants.DEFAULT_VNF_TIMEOUT)
601 return test_duration if test_duration > test_timeout else test_timeout
603 class SampleVNF(GenericVNF):
604 """ Class providing file-like API for generic VNF implementation """
606 VNF_PROMPT = "pipeline>"
608 WAIT_TIME_FOR_SCRIPT = 10
609 APP_NAME = "SampleVNF"
610 # we run the VNF interactively, so the ssh command will timeout after this long
612 def __init__(self, name, vnfd, setup_env_helper_type=None, resource_helper_type=None):
613 super(SampleVNF, self).__init__(name, vnfd)
614 self.bin_path = get_nsb_option('bin_path', '')
616 self.scenario_helper = ScenarioHelper(self.name)
617 self.ssh_helper = VnfSshHelper(self.vnfd_helper.mgmt_interface, self.bin_path)
619 if setup_env_helper_type is None:
620 setup_env_helper_type = SetupEnvHelper
622 self.setup_helper = setup_env_helper_type(self.vnfd_helper,
624 self.scenario_helper)
626 self.deploy_helper = SampleVNFDeployHelper(vnfd, self.ssh_helper)
628 if resource_helper_type is None:
629 resource_helper_type = ResourceHelper
631 self.resource_helper = resource_helper_type(self.setup_helper)
633 self.context_cfg = None
634 self.nfvi_context = None
635 self.pipeline_kwargs = {}
636 self.uplink_ports = None
637 self.downlink_ports = None
638 # NOTE(esm): make QueueFileWrapper invert-able so that we
639 # never have to manage the queues
642 self.queue_wrapper = None
644 self.used_drivers = {}
645 self.vnf_port_pairs = None
646 self._vnf_process = None
648 def _start_vnf(self):
649 self.queue_wrapper = QueueFileWrapper(self.q_in, self.q_out, self.VNF_PROMPT)
650 name = "{}-{}-{}".format(self.name, self.APP_NAME, os.getpid())
651 self._vnf_process = Process(name=name, target=self._run)
652 self._vnf_process.start()
654 def _vnf_up_post(self):
657 def instantiate(self, scenario_cfg, context_cfg):
658 self._update_collectd_options(scenario_cfg, context_cfg)
659 self.scenario_helper.scenario_cfg = scenario_cfg
660 self.context_cfg = context_cfg
661 self.nfvi_context = Context.get_context_from_server(self.scenario_helper.nodes[self.name])
662 # self.nfvi_context = None
664 # vnf deploy is unsupported, use ansible playbooks
665 if self.scenario_helper.options.get("vnf_deploy", False):
666 self.deploy_helper.deploy_vnfs(self.APP_NAME)
667 self.resource_helper.setup()
670 def _update_collectd_options(self, scenario_cfg, context_cfg):
671 """Update collectd configuration options
672 This function retrieves all collectd options contained in the test case
674 definition builds a single dictionary combining them. The following fragment
675 represents a test case with the collectd options and priorities (1 highest, 3 lowest):
677 schema: yardstick:task:0.1
681 tg__0: trafficgen_1.yardstick
682 vnf__0: vnf.yardstick
685 <options> # COLLECTD priority 3
690 <options> # COLLECTD priority 2
695 file: /etc/yardstick/nodes/pod_ixia.yaml # COLLECTD priority 1
697 scenario_options = scenario_cfg.get('options', {})
698 generic_options = scenario_options.get('collectd', {})
699 scenario_node_options = scenario_options.get(self.name, {})\
701 context_node_options = context_cfg.get('nodes', {})\
702 .get(self.name, {}).get('collectd', {})
704 options = generic_options
705 self._update_options(options, scenario_node_options)
706 self._update_options(options, context_node_options)
708 self.setup_helper.collectd_options = options
710 def _update_options(self, options, additional_options):
711 """Update collectd options and plugins dictionary"""
712 for k, v in additional_options.items():
713 if isinstance(v, dict) and k in options:
718 def wait_for_instantiate(self):
720 time.sleep(self.WAIT_TIME) # Give some time for config to load
722 if not self._vnf_process.is_alive():
723 raise RuntimeError("%s VNF process died." % self.APP_NAME)
725 # NOTE(esm): move to QueueFileWrapper
726 while self.q_out.qsize() > 0:
727 buf.append(self.q_out.get())
728 message = ''.join(buf)
729 if self.VNF_PROMPT in message:
730 LOG.info("%s VNF is up and running.", self.APP_NAME)
732 self.queue_wrapper.clear()
733 return self._vnf_process.exitcode
735 if "PANIC" in message:
736 raise RuntimeError("Error starting %s VNF." %
739 LOG.info("Waiting for %s VNF to start.. ", self.APP_NAME)
740 time.sleep(self.WAIT_TIME_FOR_SCRIPT)
741 # Send ENTER to display a new prompt in case the prompt text was corrupted
742 # by other VNF output
743 self.q_in.put('\r\n')
745 def start_collect(self):
746 self.resource_helper.start_collect()
748 def stop_collect(self):
749 self.resource_helper.stop_collect()
751 def _build_run_kwargs(self):
753 'stdin': self.queue_wrapper,
754 'stdout': self.queue_wrapper,
755 'keep_stdin_open': True,
757 'timeout': self.scenario_helper.timeout,
760 def _build_config(self):
761 return self.setup_helper.build_config()
764 # we can't share ssh paramiko objects to force new connection
765 self.ssh_helper.drop_connection()
766 cmd = self._build_config()
767 # kill before starting
768 self.setup_helper.kill_vnf()
771 self._build_run_kwargs()
772 self.ssh_helper.run(cmd, **self.run_kwargs)
774 def vnf_execute(self, cmd, wait_time=2):
775 """ send cmd to vnf process """
777 LOG.info("%s command: %s", self.APP_NAME, cmd)
778 self.q_in.put("{}\r\n".format(cmd))
779 time.sleep(wait_time)
781 while self.q_out.qsize() > 0:
782 output.append(self.q_out.get())
783 return "".join(output)
785 def _tear_down(self):
789 self.vnf_execute("quit")
790 self.setup_helper.kill_vnf()
792 self.resource_helper.stop_collect()
793 if self._vnf_process is not None:
794 # be proper and join first before we kill
795 LOG.debug("joining before terminate %s", self._vnf_process.name)
796 self._vnf_process.join(constants.PROCESS_JOIN_TIMEOUT)
797 self._vnf_process.terminate()
798 # no terminate children here because we share processes with tg
800 def get_stats(self, *args, **kwargs): # pylint: disable=unused-argument
801 """Method for checking the statistics
803 This method could be overridden in children classes.
805 :return: VNF statistics
807 cmd = 'p {0} stats'.format(self.APP_WORD)
808 out = self.vnf_execute(cmd)
811 def collect_kpi(self):
812 # we can't get KPIs if the VNF is down
813 check_if_process_failed(self._vnf_process, 0.01)
814 stats = self.get_stats()
815 m = re.search(self.COLLECT_KPI, stats, re.MULTILINE)
817 result = {k: int(m.group(v)) for k, v in self.COLLECT_MAP.items()}
818 result["collect_stats"] = self.resource_helper.collect_kpi()
823 "packets_dropped": 0,
825 LOG.debug("%s collect KPIs %s", self.APP_NAME, result)
828 def scale(self, flavor=""):
829 """The SampleVNF base class doesn't provide the 'scale' feature"""
830 raise y_exceptions.FunctionNotImplemented(
831 function_name='scale', class_name='SampleVNFTrafficGen')
834 class SampleVNFTrafficGen(GenericTrafficGen):
835 """ Class providing file-like API for generic traffic generator """
840 def __init__(self, name, vnfd, setup_env_helper_type=None, resource_helper_type=None):
841 super(SampleVNFTrafficGen, self).__init__(name, vnfd)
842 self.bin_path = get_nsb_option('bin_path', '')
844 self.scenario_helper = ScenarioHelper(self.name)
845 self.ssh_helper = VnfSshHelper(self.vnfd_helper.mgmt_interface, self.bin_path, wait=True)
847 if setup_env_helper_type is None:
848 setup_env_helper_type = SetupEnvHelper
850 self.setup_helper = setup_env_helper_type(self.vnfd_helper,
852 self.scenario_helper)
854 if resource_helper_type is None:
855 resource_helper_type = ClientResourceHelper
857 self.resource_helper = resource_helper_type(self.setup_helper)
859 self.runs_traffic = True
860 self.traffic_finished = False
861 self._tg_process = None
862 self._traffic_process = None
864 def _start_server(self):
865 # we can't share ssh paramiko objects to force new connection
866 self.ssh_helper.drop_connection()
868 def instantiate(self, scenario_cfg, context_cfg):
869 self.scenario_helper.scenario_cfg = scenario_cfg
870 self.resource_helper.setup()
871 # must generate_cfg after DPDK bind because we need port number
872 self.resource_helper.generate_cfg()
874 LOG.info("Starting %s server...", self.APP_NAME)
875 name = "{}-{}-{}".format(self.name, self.APP_NAME, os.getpid())
876 self._tg_process = Process(name=name, target=self._start_server)
877 self._tg_process.start()
879 def _check_status(self):
880 raise NotImplementedError
882 def _wait_for_process(self):
884 if not self._tg_process.is_alive():
885 raise RuntimeError("%s traffic generator process died." % self.APP_NAME)
886 LOG.info("Waiting for %s TG Server to start.. ", self.APP_NAME)
888 status = self._check_status()
890 LOG.info("%s TG Server is up and running.", self.APP_NAME)
891 return self._tg_process.exitcode
893 def _traffic_runner(self, traffic_profile):
894 # always drop connections first thing in new processes
895 # so we don't get paramiko errors
896 self.ssh_helper.drop_connection()
897 LOG.info("Starting %s client...", self.APP_NAME)
898 self.resource_helper.run_traffic(traffic_profile)
900 def run_traffic(self, traffic_profile):
901 """ Generate traffic on the wire according to the given params.
902 Method is non-blocking, returns immediately when traffic process
903 is running. Mandatory.
905 :param traffic_profile:
908 name = "{}-{}-{}-{}".format(self.name, self.APP_NAME, traffic_profile.__class__.__name__,
910 self._traffic_process = Process(name=name, target=self._traffic_runner,
911 args=(traffic_profile,))
912 self._traffic_process.start()
913 # Wait for traffic process to start
914 while self.resource_helper.client_started.value == 0:
915 time.sleep(self.RUN_WAIT)
916 # what if traffic process takes a few seconds to start?
917 if not self._traffic_process.is_alive():
920 return self._traffic_process.is_alive()
922 def collect_kpi(self):
923 # check if the tg processes have exited
924 for proc in (self._tg_process, self._traffic_process):
925 check_if_process_failed(proc)
926 result = self.resource_helper.collect_kpi()
927 LOG.debug("%s collect KPIs %s", self.APP_NAME, result)
931 """ After this method finishes, all traffic processes should stop. Mandatory.
935 self.traffic_finished = True
936 # we must kill client before we kill the server, or the client will raise exception
937 if self._traffic_process is not None:
938 # be proper and try to join before terminating
939 LOG.debug("joining before terminate %s", self._traffic_process.name)
940 self._traffic_process.join(constants.PROCESS_JOIN_TIMEOUT)
941 self._traffic_process.terminate()
942 if self._tg_process is not None:
943 # be proper and try to join before terminating
944 LOG.debug("joining before terminate %s", self._tg_process.name)
945 self._tg_process.join(constants.PROCESS_JOIN_TIMEOUT)
946 self._tg_process.terminate()
947 # no terminate children here because we share processes with vnf
949 def scale(self, flavor=""):
950 """A traffic generator VFN doesn't provide the 'scale' feature"""
951 raise y_exceptions.FunctionNotImplemented(
952 function_name='scale', class_name='SampleVNFTrafficGen')