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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.
import logging
from yardstick.common import utils
from yardstick.network_services.libs.ixia_libs.ixnet import ixnet_api
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
LOG = logging.getLogger(__name__)
WAIT_AFTER_CFG_LOAD = 10
WAIT_FOR_TRAFFIC = 30
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 = ixnet_api.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.get_statistics()
def stop_collect(self):
self._terminated.value = 1
def generate_samples(self, ports, duration):
stats = self.get_stats()
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']
avg_latency = stats['Store-Forward_Avg_latency_ns'][port_num]
min_latency = stats['Store-Forward_Min_latency_ns'][port_num]
max_latency = stats['Store-Forward_Max_latency_ns'][port_num]
samples[port_name] = {
'rx_throughput_kps': float(stats['Rx_Rate_Kbps'][port_num]),
'tx_throughput_kps': float(stats['Tx_Rate_Kbps'][port_num]),
'rx_throughput_mbps': float(stats['Rx_Rate_Mbps'][port_num]),
'tx_throughput_mbps': float(stats['Tx_Rate_Mbps'][port_num]),
'in_packets': int(stats['Valid_Frames_Rx'][port_num]),
'out_packets': int(stats['Frames_Tx'][port_num]),
'RxThroughput': float(stats['Valid_Frames_Rx'][port_num]) / duration,
'TxThroughput': float(stats['Frames_Tx'][port_num]) / duration,
'Store-Forward_Avg_latency_ns': utils.safe_cast(avg_latency, int, 0),
'Store-Forward_Min_latency_ns': utils.safe_cast(min_latency, int, 0),
'Store-Forward_Max_latency_ns': utils.safe_cast(max_latency, int, 0)
}
except IndexError:
pass
return samples
def _initialize_client(self):
"""Initialize the IXIA IxNetwork client and configure the server"""
self.client.clear_config()
self.client.assign_ports()
vports = self.client.get_vports()
uplink_vports = vports[::2]
downlink_vports = vports[1::2]
self.client.create_traffic_model(uplink_vports, downlink_vports)
def run_traffic(self, traffic_profile, *args):
if self._terminated.value:
return
min_tol = self.rfc_helper.tolerance_low
max_tol = self.rfc_helper.tolerance_high
precision = self.rfc_helper.tolerance_precision
default = "00:00:00:00:00:00"
self._build_ports()
self._initialize_client()
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)
try:
while not self._terminated.value:
first_run = traffic_profile.execute_traffic(
self, self.client, mac)
self.client_started.value = 1
# pylint: disable=unnecessary-lambda
utils.wait_until_true(lambda: self.client.is_traffic_stopped(),
timeout=traffic_profile.config.duration * 2)
samples = self.generate_samples(traffic_profile.ports,
traffic_profile.config.duration)
completed, samples = traffic_profile.get_drop_percentage(
samples, min_tol, max_tol, precision, first_run=first_run)
self._queue.put(samples)
if completed:
self._terminated.value = 1
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, task_id, 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, task_id, 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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