yardstick/network_services/vnf_generic/vnf/tg_rfc2544_trex.py

   1 # Copyright (c) 2016-2017 Intel Corporation
   2 #
   3 # Licensed under the Apache License, Version 2.0 (the "License");
   4 # you may not use this file except in compliance with the License.
   5 # You may obtain a copy of the License at
   6 #
   7 #      http://www.apache.org/licenses/LICENSE-2.0
   8 #
   9 # Unless required by applicable law or agreed to in writing, software
  10 # distributed under the License is distributed on an "AS IS" BASIS,
  11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 # See the License for the specific language governing permissions and
  13 # limitations under the License.
  14
  15 import logging
  16 import time
  17
  18 from yardstick.common import utils
  19 from yardstick.network_services.vnf_generic.vnf import sample_vnf
  20 from yardstick.network_services.vnf_generic.vnf import tg_trex
  21
  22
  23 LOGGING = logging.getLogger(__name__)
  24
  25
  26 class TrexRfcResourceHelper(tg_trex.TrexResourceHelper):
  27
  28     SAMPLING_PERIOD = 2
  29     TRANSIENT_PERIOD = 10
  30
  31     def __init__(self, setup_helper):
  32         super(TrexRfcResourceHelper, self).__init__(setup_helper)
  33         self.rfc2544_helper = sample_vnf.Rfc2544ResourceHelper(
  34             self.scenario_helper)
  35
  36     def _run_traffic_once(self, traffic_profile):
  37         self.client_started.value = 1
  38         ports, port_pg_id = traffic_profile.execute_traffic(self)
  39
  40         samples = []
  41         timeout = int(traffic_profile.config.duration) - self.TRANSIENT_PERIOD
  42         time.sleep(self.TRANSIENT_PERIOD)
  43         for _ in utils.Timer(timeout=timeout):
  44             samples.append(self._get_samples(ports, port_pg_id=port_pg_id))
  45             time.sleep(self.SAMPLING_PERIOD)
  46
  47         traffic_profile.stop_traffic(self)
  48         completed, output = traffic_profile.get_drop_percentage(
  49             samples, self.rfc2544_helper.tolerance_low,
  50             self.rfc2544_helper.tolerance_high,
  51             self.rfc2544_helper.correlated_traffic)
  52         self._queue.put(output)
  53         return completed
  54
  55     def start_client(self, ports, mult=None, duration=None, force=True):
  56         self.client.start(ports=ports, mult=mult, duration=duration, force=force)
  57
  58     def clear_client_stats(self, ports):
  59         self.client.clear_stats(ports=ports)
  60
  61
  62 class TrexTrafficGenRFC(tg_trex.TrexTrafficGen):
  63     """
  64     This class handles mapping traffic profile and generating
  65     traffic for rfc2544 testcase.
  66     """
  67
  68     def __init__(self, name, vnfd, task_id, setup_env_helper_type=None,
  69                  resource_helper_type=None):
  70         if resource_helper_type is None:
  71             resource_helper_type = TrexRfcResourceHelper
  72         super(TrexTrafficGenRFC, self).__init__(
  73             name, vnfd, task_id, setup_env_helper_type, resource_helper_type)