core/traffic_controller_rfc2544.py

   1 # Copyright 2015-2017 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 """RFC2544 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 TrafficControllerRFC2544(TrafficController, IResults):
  22     """Traffic controller for RFC2544 traffic
  23
  24     Used to setup and control a traffic generator for an RFC2544 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().__init__(traffic_gen_class)
  34         self._type = 'rfc2544'
  35         self._tests = None
  36
  37     def configure(self, traffic):
  38         """See TrafficController for description
  39         """
  40         super().configure(traffic)
  41         self._tests = int(settings.getValue('TRAFFICGEN_RFC2544_TESTS'))
  42
  43     def send_traffic(self, traffic):
  44         """See TrafficController for description
  45         """
  46         if not self.traffic_required():
  47             return
  48
  49         super().send_traffic(traffic)
  50
  51         for packet_size in self._packet_sizes:
  52             # Merge framesize with the default traffic definition
  53             if 'l2' in traffic:
  54                 traffic['l2'] = dict(traffic['l2'],
  55                                      **{'framesize': packet_size})
  56             else:
  57                 traffic['l2'] = {'framesize': packet_size}
  58
  59             if traffic['traffic_type'] == 'rfc2544_back2back':
  60                 result = self._traffic_gen_class.send_rfc2544_back2back(
  61                     traffic, tests=self._tests, duration=self._duration, lossrate=self._lossrate)
  62             elif traffic['traffic_type'] == 'rfc2544_continuous':
  63                 result = self._traffic_gen_class.send_cont_traffic(
  64                     traffic, duration=self._duration)
  65             elif traffic['traffic_type'] == 'rfc2544_throughput':
  66                 result = self._traffic_gen_class.send_rfc2544_throughput(
  67                     traffic, tests=self._tests, duration=self._duration, lossrate=self._lossrate)
  68             else:
  69                 raise RuntimeError("Unsupported traffic type {} was "
  70                                    "detected".format(traffic['traffic_type']))
  71
  72             result = self._append_results(result, packet_size)
  73             self._results.append(result)
  74
  75     def send_traffic_async(self, traffic, function):
  76         """See TrafficController for description
  77         """
  78         if not self.traffic_required():
  79             return
  80
  81         super().send_traffic_async(traffic, function)
  82
  83         for packet_size in self._packet_sizes:
  84             traffic['l2'] = {'framesize': packet_size}
  85             self._traffic_gen_class.start_rfc2544_throughput(
  86                 traffic,
  87                 tests=self._tests,
  88                 duration=self._duration)
  89             self._traffic_started = True
  90             if len(function['args']) > 0:
  91                 function['function'](function['args'])
  92             else:
  93                 function['function']()
  94             result = self._traffic_gen_class.wait_rfc2544_throughput()
  95             result = self._append_results(result, packet_size)
  96             self._results.append(result)