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# Copyright (c) 2019 Viosoft 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 trex_stl_lib.trex_stl_exceptions import STLError
from yardstick.common.utils import safe_cast
from yardstick.network_services.vnf_generic.vnf.sample_vnf import \
Rfc2544ResourceHelper
from yardstick.network_services.vnf_generic.vnf.sample_vnf import \
SampleVNFTrafficGen
from yardstick.network_services.vnf_generic.vnf.tg_trex import \
TrexDpdkVnfSetupEnvHelper
from yardstick.network_services.vnf_generic.vnf.tg_trex import \
TrexResourceHelper
LOGGING = logging.getLogger(__name__)
class TrexVppResourceHelper(TrexResourceHelper):
def __init__(self, setup_helper, rfc_helper_type=None):
super(TrexVppResourceHelper, self).__init__(setup_helper)
if rfc_helper_type is None:
rfc_helper_type = Rfc2544ResourceHelper
self.rfc2544_helper = rfc_helper_type(self.scenario_helper)
self.loss = None
self.sent = None
self.latency = None
def generate_samples(self, stats=None, ports=None, port_pg_id=None,
latency=False):
samples = {}
if stats is None:
stats = self.get_stats(ports)
for pname in (intf['name'] for intf in self.vnfd_helper.interfaces):
port_num = self.vnfd_helper.port_num(pname)
port_stats = stats.get(port_num, {})
samples[pname] = {
'rx_throughput_fps': float(port_stats.get('rx_pps', 0.0)),
'tx_throughput_fps': float(port_stats.get('tx_pps', 0.0)),
'rx_throughput_bps': float(port_stats.get('rx_bps', 0.0)),
'tx_throughput_bps': float(port_stats.get('tx_bps', 0.0)),
'in_packets': int(port_stats.get('ipackets', 0)),
'out_packets': int(port_stats.get('opackets', 0)),
}
if latency:
pg_id_list = port_pg_id.get_pg_ids(port_num)
samples[pname]['latency'] = {}
for pg_id in pg_id_list:
latency_global = stats.get('latency', {})
pg_latency = latency_global.get(pg_id, {}).get('latency')
t_min = safe_cast(pg_latency.get("total_min", 0.0), float,
-1.0)
t_avg = safe_cast(pg_latency.get("average", 0.0), float,
-1.0)
t_max = safe_cast(pg_latency.get("total_max", 0.0), float,
-1.0)
latency = {
"min_latency": t_min,
"max_latency": t_max,
"avg_latency": t_avg,
}
samples[pname]['latency'][pg_id] = latency
return samples
def _run_traffic_once(self, traffic_profile):
self.client_started.value = 1
traffic_profile.execute_traffic(self)
return True
def run_traffic(self, traffic_profile):
self._queue.cancel_join_thread()
traffic_profile.init_queue(self._queue)
super(TrexVppResourceHelper, self).run_traffic(traffic_profile)
@staticmethod
def fmt_latency(lat_min, lat_avg, lat_max):
t_min = int(round(safe_cast(lat_min, float, -1.0)))
t_avg = int(round(safe_cast(lat_avg, float, -1.0)))
t_max = int(round(safe_cast(lat_max, float, -1.0)))
return "/".join(str(tmp) for tmp in (t_min, t_avg, t_max))
def send_traffic_on_tg(self, ports, port_pg_id, duration, rate,
latency=False):
try:
# Choose rate and start traffic:
self.client.start(ports=ports, mult=rate, duration=duration)
# Block until done:
try:
self.client.wait_on_traffic(ports=ports, timeout=duration + 20)
except STLError as err:
self.client.stop(ports)
LOGGING.error("TRex stateless timeout error: %s", err)
if self.client.get_warnings():
for warning in self.client.get_warnings():
LOGGING.warning(warning)
# Read the stats after the test
stats = self.client.get_stats()
packets_in = []
packets_out = []
for port in ports:
packets_in.append(stats[port]["ipackets"])
packets_out.append(stats[port]["opackets"])
if latency:
self.latency = []
pg_id_list = port_pg_id.get_pg_ids(port)
for pg_id in pg_id_list:
latency_global = stats.get('latency', {})
pg_latency = latency_global.get(pg_id, {}).get(
'latency')
lat = self.fmt_latency(
str(pg_latency.get("total_min")),
str(pg_latency.get("average")),
str(pg_latency.get("total_max")))
LOGGING.info(
"latencyStream%s(usec)=%s", pg_id, lat)
self.latency.append(lat)
self.sent = sum(packets_out)
total_rcvd = sum(packets_in)
self.loss = self.sent - total_rcvd
LOGGING.info("rate=%s, totalReceived=%s, totalSent=%s,"
" frameLoss=%s", rate, total_rcvd, self.sent,
self.loss)
return stats
except STLError as err:
LOGGING.error("TRex stateless runtime error: %s", err)
raise RuntimeError('TRex stateless runtime error')
class TrexTrafficGenVpp(SampleVNFTrafficGen):
APP_NAME = 'TRex'
WAIT_TIME = 20
def __init__(self, name, vnfd, setup_env_helper_type=None,
resource_helper_type=None):
if setup_env_helper_type is None:
setup_env_helper_type = TrexDpdkVnfSetupEnvHelper
if resource_helper_type is None:
resource_helper_type = TrexVppResourceHelper
super(TrexTrafficGenVpp, self).__init__(
name, vnfd, setup_env_helper_type, resource_helper_type)
def _check_status(self):
return self.resource_helper.check_status()
def _start_server(self):
super(TrexTrafficGenVpp, self)._start_server()
self.resource_helper.start()
def wait_for_instantiate(self):
return self._wait_for_process()
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