core/traffic_controller_rfc2889.py

   1 # Copyright 2016-2017 Spirent Communications, 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 """RFC2889 Traffic Controller implementation.
  15 """
  16 from core.traffic_controller import TrafficController
  17 from core.results.results import IResults
  18 from conf import settings
  19
  20
  21 class TrafficControllerRFC2889(TrafficController, IResults):
  22     """Traffic controller for RFC2889 traffic
  23
  24     Used to setup and control a traffic generator for an RFC2889 deployment
  25     traffic scenario.
  26     """
  27
  28     def __init__(self, traffic_gen_class):
  29         """Initialise the trafficgen and store.
  30
  31         :param traffic_gen_class: The traffic generator class to be used.
  32         """
  33         super(TrafficControllerRFC2889, self).__init__(traffic_gen_class)
  34         self._type = 'rfc2889'
  35         self._trials = int(settings.getValue('TRAFFICGEN_RFC2889_TRIALS'))
  36
  37     def send_traffic(self, traffic):
  38         """See TrafficController for description
  39         """
  40         if not self.traffic_required():
  41             return
  42         self._logger.debug('send_traffic with ' +
  43                            str(self._traffic_gen_class))
  44
  45         # update type with detailed traffic value
  46         self._type = traffic['traffic_type']
  47
  48         for packet_size in self._packet_sizes:
  49             # Merge framesize with the default traffic definition
  50             if 'l2' in traffic:
  51                 traffic['l2'] = dict(traffic['l2'],
  52                                      **{'framesize': packet_size})
  53             else:
  54                 traffic['l2'] = {'framesize': packet_size}
  55
  56             if traffic['traffic_type'] == 'rfc2889_caching':
  57                 result = self._traffic_gen_class.send_rfc2889_caching(
  58                     traffic, tests=self._trials, duration=self._duration)
  59             elif traffic['traffic_type'] == 'rfc2889_learning':
  60                 result = self._traffic_gen_class.send_rfc2889_learning(
  61                     traffic, tests=self._trials, duration=self._duration)
  62             elif traffic['traffic_type'] == 'rfc2889_forwarding':
  63                 result = self._traffic_gen_class.send_rfc2889_forwarding(
  64                     traffic, tests=self._trials, duration=self._duration)
  65
  66             result = self._append_results(result, packet_size)
  67             self._results.append(result)
  68
  69     def send_traffic_async(self, traffic, function):
  70         """See TrafficController for description
  71         """
  72         if not self.traffic_required():
  73             return
  74         self._logger.debug('send_traffic_async with ' +
  75                            str(self._traffic_gen_class))
  76
  77         # update type with detailed traffic value
  78         self._type = traffic['traffic_type']
  79
  80         for packet_size in self._packet_sizes:
  81             traffic['l2'] = {'framesize': packet_size}
  82             self._traffic_gen_class.start_rfc2889_forwarding(
  83                 traffic,
  84                 trials=self._trials,
  85                 duration=self._duration)
  86             self._traffic_started = True
  87             if len(function['args']) > 0:
  88                 function['function'](function['args'])
  89             else:
  90                 function['function']()
  91             result = self._traffic_gen_class.wait_rfc2889_forwarding(
  92                 traffic, trials=self._trials, duration=self._duration)
  93             result = self._append_results(result, packet_size)
  94             self._results.append(result)