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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
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):
pass
class IxiaResourceHelper(ClientResourceHelper):
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.tg_port_pairs = []
self.priv_ports = None
self.pub_ports = None
def _connect(self, client=None):
self.client._connect(self.vnfd_helper)
def _build_ports(self):
# self.generate_port_pairs(self.topology)
self.priv_ports = [int(x[0][2:]) for x in self.tg_port_pairs]
self.pub_ports = [int(x[1][2:]) for x in self.tg_port_pairs]
self.my_ports = list(set(self.priv_ports).union(set(self.pub_ports)))
def get_stats(self, *args, **kwargs):
return self.client.ix_get_statistics()[1]
def stop_collect(self):
self._terminated.value = 0
if self.client and self.client.ixnet:
self.client.ix_stop_traffic()
def generate_samples(self, key=None, default=None):
last_result = self.get_stats()
samples = {}
for vpci_idx, interface in enumerate(self.vnfd_helper.interfaces):
name = "xe{0}".format(vpci_idx)
samples[name] = {
"rx_throughput_kps": float(last_result["Rx_Rate_Kbps"][vpci_idx]),
"tx_throughput_kps": float(last_result["Tx_Rate_Kbps"][vpci_idx]),
"rx_throughput_mbps": float(last_result["Rx_Rate_Mbps"][vpci_idx]),
"tx_throughput_mbps": float(last_result["Tx_Rate_Mbps"][vpci_idx]),
"in_packets": int(last_result["Valid_Frames_Rx"][vpci_idx]),
"out_packets": int(last_result["Frames_Tx"][vpci_idx]),
"RxThroughput": int(last_result["Valid_Frames_Rx"][vpci_idx]) / 30,
"TxThroughput": int(last_result["Frames_Tx"][vpci_idx]) / 30,
}
return samples
def run_traffic(self, traffic_profile):
min_tol = self.rfc_helper.tolerance_low
max_tol = self.rfc_helper.tolerance_high
self._build_ports()
self._connect()
# we don't know client_file_name until runtime as instantiate
client_file_name = self.scenario_helper.scenario_cfg['ixia_profile']
self.client.ix_load_config(client_file_name)
time.sleep(WAIT_AFTER_CFG_LOAD)
self.client.ix_assign_ports()
mac = {}
for index, interface in enumerate(self.vnfd_helper.interfaces, 1):
virt_intf = interface["virtual-interface"]
mac.update({
"src_mac_{}".format(index): virt_intf["local_mac"],
"dst_mac_{}".format(index): virt_intf["dst_mac"],
})
samples = {}
ixia_file = os.path.join(os.getcwd(), "ixia_traffic.cfg")
# Generate ixia traffic config...
while not self._terminated.value:
traffic_profile.execute(self, self.client, mac, ixia_file)
self.client_started.value = 1
time.sleep(WAIT_FOR_TRAFFIC)
self.client.ix_stop_traffic()
samples = self.generate_samples()
self._queue.put(samples)
status, samples = traffic_profile.get_drop_percentage(self, samples, min_tol,
max_tol, self.client, mac,
ixia_file)
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)
class IxiaTrafficGen(SampleVNFTrafficGen):
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.tg_port_pairs = []
self.vnf_port_pairs = []
def _check_status(self):
pass
def scale(self, flavor=""):
pass
def listen_traffic(self, traffic_profile):
pass
def terminate(self):
self.resource_helper.stop_collect()
super(IxiaTrafficGen, self).terminate()
def wait_for_instantiate(self):
# not needed for IxNet
pass
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