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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.
""" Trex traffic generation definitions which implements rfc2544 """
from __future__ import absolute_import
from __future__ import print_function
import time
import logging
from collections import Mapping
from yardstick.network_services.vnf_generic.vnf.tg_trex import TrexTrafficGen
from yardstick.network_services.vnf_generic.vnf.sample_vnf import Rfc2544ResourceHelper
from yardstick.network_services.vnf_generic.vnf.tg_trex import TrexResourceHelper
LOGGING = logging.getLogger(__name__)
class TrexRfc2544ResourceHelper(Rfc2544ResourceHelper):
def is_done(self):
return self.latency and self.iteration.value > 10
class TrexRfcResourceHelper(TrexResourceHelper):
LATENCY_TIME_SLEEP = 120
RUN_DURATION = 30
WAIT_TIME = 3
def __init__(self, setup_helper, rfc_helper_type=None):
super(TrexRfcResourceHelper, self).__init__(setup_helper)
if rfc_helper_type is None:
rfc_helper_type = TrexRfc2544ResourceHelper
self.rfc2544_helper = rfc_helper_type(self.scenario_helper)
def _run_traffic_once(self, traffic_profile):
if self._terminated.value:
return
traffic_profile.execute_traffic(self)
self.client_started.value = 1
time.sleep(self.RUN_DURATION)
self.client.stop(traffic_profile.ports)
time.sleep(self.WAIT_TIME)
samples = traffic_profile.get_drop_percentage(self)
self._queue.put(samples)
if not self.rfc2544_helper.is_done():
return
self.client.stop(traffic_profile.ports)
self.client.reset(ports=traffic_profile.ports)
self.client.remove_all_streams(traffic_profile.ports)
traffic_profile.execute_traffic_latency(samples=samples)
multiplier = traffic_profile.calculate_pps(samples)[1]
for _ in range(5):
time.sleep(self.LATENCY_TIME_SLEEP)
self.client.stop(traffic_profile.ports)
time.sleep(self.WAIT_TIME)
last_res = self.client.get_stats(traffic_profile.ports)
if not isinstance(last_res, Mapping):
self._terminated.value = 1
continue
self.generate_samples(traffic_profile.ports, 'latency', {})
self._queue.put(samples)
self.client.start(mult=str(multiplier),
ports=traffic_profile.ports,
duration=120, force=True)
def start_client(self, ports, mult=None, duration=None, force=True):
self.client.start(ports=ports, mult=mult, duration=duration, force=force)
def clear_client_stats(self, ports):
self.client.clear_stats(ports=ports)
def collect_kpi(self):
self.rfc2544_helper.iteration.value += 1
return super(TrexRfcResourceHelper, self).collect_kpi()
class TrexTrafficGenRFC(TrexTrafficGen):
"""
This class handles mapping traffic profile and generating
traffic for rfc2544 testcase.
"""
def __init__(self, name, vnfd, setup_env_helper_type=None, resource_helper_type=None):
if resource_helper_type is None:
resource_helper_type = TrexRfcResourceHelper
super(TrexTrafficGenRFC, self).__init__(name, vnfd, setup_env_helper_type,
resource_helper_type)
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