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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.
""" Fixed traffic profile definitions """
from __future__ import absolute_import
import logging
import multiprocessing
from yardstick.network_services.traffic_profile.base import TrafficProfile
from yardstick.network_services.vnf_generic.vnf.prox_helpers import ProxProfileHelper
LOG = logging.getLogger(__name__)
class ProxProfile(TrafficProfile):
"""
This profile adds a single stream at the beginning of the traffic session
"""
@staticmethod
def sort_vpci(traffic_gen):
"""Return the list of external interfaces ordered by vpci and name
:param traffic_gen: (ProxTrafficGen) traffic generator
:return: list of ordered interfaces
"""
def key_func(interface):
return interface['virtual-interface']['vpci'], interface['name']
return sorted(traffic_gen.vnfd_helper['vdu'][0]['external-interface'],
key=key_func)
@staticmethod
def fill_samples(samples, traffic_gen):
vpci_if_name_ascending = ProxProfile.sort_vpci(traffic_gen)
for vpci_idx, intf in enumerate(vpci_if_name_ascending):
name = intf[1]
# TODO: VNFDs KPIs values needs to be mapped to TRex structure
xe_port = traffic_gen.resource_helper.sut.port_stats([vpci_idx])
samples[name] = {
"in_packets": xe_port[6],
"out_packets": xe_port[7],
}
def __init__(self, tp_config):
super(ProxProfile, self).__init__(tp_config)
self.queue = None
self.done = multiprocessing.Event()
self.results = []
# TODO: get init values from tp_config
self.prox_config = tp_config["traffic_profile"]
self.pkt_sizes = [int(x) for x in self.prox_config.get("packet_sizes", [])]
self.pkt_size_iterator = iter(self.pkt_sizes)
self.duration = int(self.prox_config.get("duration", 5))
self.precision = float(self.prox_config.get('test_precision', 1.0))
self.tolerated_loss = float(self.prox_config.get('tolerated_loss', 0.0))
# TODO: is this ever a function of packet size?
self.lower_bound = float(self.prox_config.get('lower_bound', 10.0))
self.upper_bound = float(self.prox_config.get('upper_bound', 100.0))
self.step_value = float(self.prox_config.get('step_value', 10.0))
self._profile_helper = None
def make_profile_helper(self, traffic_gen):
if self._profile_helper is None:
self._profile_helper = ProxProfileHelper.make_profile_helper(traffic_gen)
return self._profile_helper
def init(self, queue):
self.pkt_size_iterator = iter(self.pkt_sizes)
self.queue = queue
self.queue.cancel_join_thread()
def bounds_iterator(self, logger=None):
if logger:
logger.debug("Interval [%s, %s), step: %d", self.lower_bound,
self.upper_bound, self.step_value)
test_value = self.lower_bound
while test_value <= self.upper_bound:
if logger:
logger.info("Testing with value %s", test_value)
yield test_value
test_value += self.step_value
@property
def min_pkt_size(self):
"""Return the minimum required packet size for the test.
Defaults to 64. Individual test must override this method if they have
other requirements.
Returns:
int. The minimum required packet size for the test.
"""
return 64
def run_test_with_pkt_size(self, traffic_generator, pkt_size, duration):
raise NotImplementedError
def execute_traffic(self, traffic_generator):
self.make_profile_helper(traffic_generator)
try:
pkt_size = next(self.pkt_size_iterator)
except StopIteration:
self.done.set()
return
# Adjust packet size upwards if it's less than the minimum
# required packet size for the test.
if pkt_size < self.min_pkt_size:
pkt_size += self.min_pkt_size - 64
duration = self.duration
self.run_test_with_pkt_size(traffic_generator, pkt_size, duration)
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