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# Copyright (c) 2019 Viosoft 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.
import logging
import re
import time
from yardstick.benchmark.contexts.base import Context
from yardstick.common.process import check_if_process_failed
from yardstick.network_services import constants
from yardstick.network_services.helpers.cpu import CpuSysCores
from yardstick.network_services.vnf_generic.vnf.sample_vnf import SampleVNF
from yardstick.network_services.vnf_generic.vnf.vpp_helpers import \
VppSetupEnvHelper
LOG = logging.getLogger(__name__)
class VipsecApproxSetupEnvHelper(VppSetupEnvHelper):
DEFAULT_IPSEC_VNF_CFG = {
'crypto_type': 'SW_cryptodev',
'rxq': 1,
'worker_config': '1C/1T',
'worker_threads': 1,
}
def __init__(self, vnfd_helper, ssh_helper, scenario_helper):
super(VipsecApproxSetupEnvHelper, self).__init__(
vnfd_helper, ssh_helper, scenario_helper)
def _get_crypto_type(self):
vnf_cfg = self.scenario_helper.options.get('vnf_config',
self.DEFAULT_IPSEC_VNF_CFG)
return vnf_cfg.get('crypto_type', 'SW_cryptodev')
def _get_crypto_algorithms(self):
vpp_cfg = self.scenario_helper.all_options.get('vpp_config', {})
return vpp_cfg.get('crypto_algorithms', 'aes-gcm')
def _get_n_tunnels(self):
vpp_cfg = self.scenario_helper.all_options.get('vpp_config', {})
return vpp_cfg.get('tunnels', 1)
def _get_n_connections(self):
try:
flow_cfg = self.scenario_helper.all_options['flow']
return flow_cfg['count']
except KeyError:
raise KeyError("Missing flow definition in scenario section" +
" of the task definition file")
def _get_flow_src_start_ip(self):
node_name = self.find_encrypted_data_interface()["node_name"]
try:
flow_cfg = self.scenario_helper.all_options['flow']
src_ips = flow_cfg['src_ip']
dst_ips = flow_cfg['dst_ip']
except KeyError:
raise KeyError("Missing flow definition in scenario section" +
" of the task definition file")
for src, dst in zip(src_ips, dst_ips):
flow_src_start_ip, _ = src.split('-')
flow_dst_start_ip, _ = dst.split('-')
if node_name == "vnf__0":
return flow_src_start_ip
elif node_name == "vnf__1":
return flow_dst_start_ip
def _get_flow_dst_start_ip(self):
node_name = self.find_encrypted_data_interface()["node_name"]
try:
flow_cfg = self.scenario_helper.all_options['flow']
src_ips = flow_cfg['src_ip']
dst_ips = flow_cfg['dst_ip']
except KeyError:
raise KeyError("Missing flow definition in scenario section" +
" of the task definition file")
for src, dst in zip(src_ips, dst_ips):
flow_src_start_ip, _ = src.split('-')
flow_dst_start_ip, _ = dst.split('-')
if node_name == "vnf__0":
return flow_dst_start_ip
elif node_name == "vnf__1":
return flow_src_start_ip
def build_config(self):
# TODO Implement later
pass
def setup_vnf_environment(self):
resource = super(VipsecApproxSetupEnvHelper,
self).setup_vnf_environment()
self.start_vpp_service()
sys_cores = CpuSysCores(self.ssh_helper)
self._update_vnfd_helper(sys_cores.get_cpu_layout())
return resource
@staticmethod
def calculate_frame_size(frame_cfg):
if not frame_cfg:
return 64
imix_count = {size.upper().replace('B', ''): int(weight)
for size, weight in frame_cfg.items()}
imix_sum = sum(imix_count.values())
if imix_sum <= 0:
return 64
packets_total = sum([int(size) * weight
for size, weight in imix_count.items()])
return packets_total / imix_sum
def check_status(self):
ipsec_created = False
cmd = "vppctl show int"
_, stdout, _ = self.ssh_helper.execute(cmd)
entries = re.split(r"\n+", stdout)
tmp = [re.split(r"\s\s+", entry, 5) for entry in entries]
for item in tmp:
if isinstance(item, list):
if item[0] and item[0] != 'local0':
if "ipsec" in item[0] and not ipsec_created:
ipsec_created = True
if len(item) > 2 and item[2] == 'down':
return False
return ipsec_created
def get_vpp_statistics(self):
# TODO Implement later
return None
def create_ipsec_tunnels(self):
# TODO Implement later
pass
def find_raw_data_interface(self):
try:
return self.vnfd_helper.find_virtual_interface(vld_id="uplink_0")
except KeyError:
return self.vnfd_helper.find_virtual_interface(vld_id="downlink_0")
def find_encrypted_data_interface(self):
return self.vnfd_helper.find_virtual_interface(vld_id="ciphertext")
class VipsecApproxVnf(SampleVNF):
""" This class handles vIPSEC VNF model-driver definitions """
APP_NAME = 'vIPSEC'
APP_WORD = 'vipsec'
WAIT_TIME = 20
def __init__(self, name, vnfd, setup_env_helper_type=None,
resource_helper_type=None):
if setup_env_helper_type is None:
setup_env_helper_type = VipsecApproxSetupEnvHelper
super(VipsecApproxVnf, self).__init__(
name, vnfd, setup_env_helper_type,
resource_helper_type)
def _run(self):
# we can't share ssh paramiko objects to force new connection
self.ssh_helper.drop_connection()
# kill before starting
self.setup_helper.kill_vnf()
self._build_config()
self.setup_helper.create_ipsec_tunnels()
def wait_for_instantiate(self):
time.sleep(self.WAIT_TIME)
while True:
status = self.setup_helper.check_status()
if not self._vnf_process.is_alive() and not status:
raise RuntimeError("%s VNF process died." % self.APP_NAME)
LOG.info("Waiting for %s VNF to start.. ", self.APP_NAME)
time.sleep(self.WAIT_TIME_FOR_SCRIPT)
status = self.setup_helper.check_status()
if status:
LOG.info("%s VNF is up and running.", self.APP_NAME)
self._vnf_up_post()
return self._vnf_process.exitcode
def terminate(self):
self.setup_helper.kill_vnf()
self._tear_down()
self.resource_helper.stop_collect()
if self._vnf_process is not None:
# be proper and join first before we kill
LOG.debug("joining before terminate %s", self._vnf_process.name)
self._vnf_process.join(constants.PROCESS_JOIN_TIMEOUT)
self._vnf_process.terminate()
def collect_kpi(self):
# we can't get KPIs if the VNF is down
check_if_process_failed(self._vnf_process, 0.01)
physical_node = Context.get_physical_node_from_server(
self.scenario_helper.nodes[self.name])
result = {"physical_node": physical_node}
result["collect_stats"] = self.setup_helper.get_vpp_statistics()
LOG.debug("%s collect KPIs %s", self.APP_NAME, result)
return result
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