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# Copyright (c) 2016-2017 Intel Corporation
#
# 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.
from __future__ import absolute_import
import time
import os
import logging
import sys
from yardstick.common.utils import ErrorClass
from yardstick.network_services.vnf_generic.vnf.sample_vnf import SampleVNFTrafficGen
from yardstick.network_services.vnf_generic.vnf.sample_vnf import ClientResourceHelper
from yardstick.network_services.vnf_generic.vnf.sample_vnf import Rfc2544ResourceHelper
from yardstick.benchmark.scenarios.networking.vnf_generic import find_relative_file
LOG = logging.getLogger(__name__)
WAIT_AFTER_CFG_LOAD = 10
WAIT_FOR_TRAFFIC = 30
IXIA_LIB = os.path.dirname(os.path.realpath(__file__))
IXNET_LIB = os.path.join(IXIA_LIB, "../../libs/ixia_libs/IxNet")
sys.path.append(IXNET_LIB)
try:
from IxNet import IxNextgen
except ImportError:
IxNextgen = ErrorClass
class IxiaRfc2544Helper(Rfc2544ResourceHelper):
def is_done(self):
return self.latency and self.iteration.value > 10
class IxiaResourceHelper(ClientResourceHelper):
LATENCY_TIME_SLEEP = 120
def __init__(self, setup_helper, rfc_helper_type=None):
super(IxiaResourceHelper, self).__init__(setup_helper)
self.scenario_helper = setup_helper.scenario_helper
self.client = IxNextgen()
if rfc_helper_type is None:
rfc_helper_type = IxiaRfc2544Helper
self.rfc_helper = rfc_helper_type(self.scenario_helper)
self.uplink_ports = None
self.downlink_ports = None
self._connect()
def _connect(self, client=None):
self.client._connect(self.vnfd_helper)
def get_stats(self, *args, **kwargs):
return self.client.ix_get_statistics()
def stop_collect(self):
self._terminated.value = 1
if self.client:
self.client.ix_stop_traffic()
def generate_samples(self, ports, key=None, default=None):
stats = self.get_stats()
last_result = stats[1]
latency = stats[0]
samples = {}
# this is not DPDK port num, but this is whatever number we gave
# when we selected ports and programmed the profile
for port_num in ports:
try:
# reverse lookup port name from port_num so the stats dict is descriptive
intf = self.vnfd_helper.find_interface_by_port(port_num)
port_name = intf["name"]
samples[port_name] = {
"rx_throughput_kps": float(last_result["Rx_Rate_Kbps"][port_num]),
"tx_throughput_kps": float(last_result["Tx_Rate_Kbps"][port_num]),
"rx_throughput_mbps": float(last_result["Rx_Rate_Mbps"][port_num]),
"tx_throughput_mbps": float(last_result["Tx_Rate_Mbps"][port_num]),
"in_packets": int(last_result["Valid_Frames_Rx"][port_num]),
"out_packets": int(last_result["Frames_Tx"][port_num]),
"RxThroughput": int(last_result["Valid_Frames_Rx"][port_num]) / 30,
"TxThroughput": int(last_result["Frames_Tx"][port_num]) / 30,
}
if key:
avg_latency = latency["Store-Forward_Avg_latency_ns"][port_num]
min_latency = latency["Store-Forward_Min_latency_ns"][port_num]
max_latency = latency["Store-Forward_Max_latency_ns"][port_num]
samples[port_name][key] = \
{"Store-Forward_Avg_latency_ns": avg_latency,
"Store-Forward_Min_latency_ns": min_latency,
"Store-Forward_Max_latency_ns": max_latency}
except IndexError:
pass
return samples
def run_traffic(self, traffic_profile):
if self._terminated.value:
return
min_tol = self.rfc_helper.tolerance_low
max_tol = self.rfc_helper.tolerance_high
default = "00:00:00:00:00:00"
self._build_ports()
# we don't know client_file_name until runtime as instantiate
client_file_name = \
find_relative_file(self.scenario_helper.scenario_cfg['ixia_profile'],
self.scenario_helper.scenario_cfg["task_path"])
self.client.ix_load_config(client_file_name)
time.sleep(WAIT_AFTER_CFG_LOAD)
self.client.ix_assign_ports()
mac = {}
for port_name in self.vnfd_helper.port_pairs.all_ports:
intf = self.vnfd_helper.find_interface(name=port_name)
virt_intf = intf["virtual-interface"]
# we only know static traffic id by reading the json
# this is used by _get_ixia_trafficrofile
port_num = self.vnfd_helper.port_num(intf)
mac["src_mac_{}".format(port_num)] = virt_intf.get("local_mac", default)
mac["dst_mac_{}".format(port_num)] = virt_intf.get("dst_mac", default)
samples = {}
# Generate ixia traffic config...
try:
while not self._terminated.value:
traffic_profile.execute_traffic(self, self.client, mac)
self.client_started.value = 1
time.sleep(WAIT_FOR_TRAFFIC)
self.client.ix_stop_traffic()
samples = self.generate_samples(traffic_profile.ports)
self._queue.put(samples)
status, samples = traffic_profile.get_drop_percentage(self, samples, min_tol,
max_tol, self.client, mac)
current = samples['CurrentDropPercentage']
if min_tol <= current <= max_tol or status == 'Completed':
self._terminated.value = 1
self.client.ix_stop_traffic()
self._queue.put(samples)
if not self.rfc_helper.is_done():
self._terminated.value = 1
return
traffic_profile.execute_traffic(self, self.client, mac)
for _ in range(5):
time.sleep(self.LATENCY_TIME_SLEEP)
self.client.ix_stop_traffic()
samples = self.generate_samples(traffic_profile.ports, 'latency', {})
self._queue.put(samples)
traffic_profile.start_ixia_latency(self, self.client, mac)
if self._terminated.value:
break
self.client.ix_stop_traffic()
except Exception: # pylint: disable=broad-except
LOG.exception("Run Traffic terminated")
self._terminated.value = 1
def collect_kpi(self):
self.rfc_helper.iteration.value += 1
return super(IxiaResourceHelper, self).collect_kpi()
class IxiaTrafficGen(SampleVNFTrafficGen):
APP_NAME = 'Ixia'
def __init__(self, name, vnfd, setup_env_helper_type=None, resource_helper_type=None):
if resource_helper_type is None:
resource_helper_type = IxiaResourceHelper
super(IxiaTrafficGen, self).__init__(name, vnfd, setup_env_helper_type,
resource_helper_type)
self._ixia_traffic_gen = None
self.ixia_file_name = ''
self.vnf_port_pairs = []
def _check_status(self):
pass
def terminate(self):
self.resource_helper.stop_collect()
super(IxiaTrafficGen, self).terminate()
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