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# Copyright (c) 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.
import errno
import logging
import datetime
from yardstick.common.process import check_if_process_failed
from yardstick.network_services.vnf_generic.vnf.prox_helpers import ProxDpdkVnfSetupEnvHelper
from yardstick.network_services.vnf_generic.vnf.prox_helpers import ProxResourceHelper
from yardstick.network_services.vnf_generic.vnf.sample_vnf import SampleVNF
from yardstick.network_services import constants
from yardstick.benchmark.contexts import base as context_base
LOG = logging.getLogger(__name__)
class ProxApproxVnf(SampleVNF):
APP_NAME = 'PROX'
APP_WORD = 'PROX'
PROX_MODE = "Workload"
VNF_PROMPT = "PROX started"
LUA_PARAMETER_NAME = "sut"
def __init__(self, name, vnfd, task_id, setup_env_helper_type=None,
resource_helper_type=None):
if setup_env_helper_type is None:
setup_env_helper_type = ProxDpdkVnfSetupEnvHelper
if resource_helper_type is None:
resource_helper_type = ProxResourceHelper
self.prev_packets_in = 0
self.prev_packets_sent = 0
self.prev_tsc = 0
self.tsc_hz = 0
super(ProxApproxVnf, self).__init__(
name, vnfd, task_id, setup_env_helper_type, resource_helper_type)
def _vnf_up_post(self):
self.resource_helper.up_post()
def vnf_execute(self, cmd, *args, **kwargs):
# try to execute with socket commands
# ignore socket errors, e.g. when using force_quit
ignore_errors = kwargs.pop("_ignore_errors", False)
try:
return self.resource_helper.execute(cmd, *args, **kwargs)
except OSError as e:
if e.errno in {errno.EPIPE, errno.ESHUTDOWN, errno.ECONNRESET}:
if ignore_errors:
LOG.debug("ignoring vnf_execute exception %s for command %s", e, cmd)
else:
raise
else:
raise
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_base.Context.get_physical_node_from_server(
self.scenario_helper.nodes[self.name])
result = {"physical_node": physical_node}
if self.resource_helper is None:
result.update({
"packets_in": 0,
"packets_dropped": 0,
"packets_fwd": 0,
"collect_stats": {"core": {}},
})
return result
if (self.tsc_hz == 0):
self.tsc_hz = float(self.resource_helper.sut.hz())
LOG.debug("TSC = %f", self.tsc_hz)
if (self.tsc_hz == 0):
raise RuntimeError("Unable to retrieve TSC")
# use all_ports so we only use ports matched in topology
port_count = len(self.vnfd_helper.port_pairs.all_ports)
if port_count not in {1, 2, 4}:
raise RuntimeError("Failed ..Invalid no of ports .. "
"1, 2 or 4 ports only supported at this time")
all_port_stats = self.vnf_execute('multi_port_stats', range(port_count))
rx_total = tx_total = tsc = 0
try:
for single_port_stats in all_port_stats:
rx_total = rx_total + single_port_stats[1]
tx_total = tx_total + single_port_stats[2]
tsc = tsc + single_port_stats[5]
except (TypeError, IndexError):
LOG.error("Invalid data ...")
return {}
tsc = tsc / port_count
result.update({
"packets_in": rx_total,
"packets_dropped": max((tx_total - rx_total), 0),
"packets_fwd": tx_total,
# we share ProxResourceHelper with TG, but we want to collect
# collectd KPIs here and not TG KPIs, so use a different method name
"collect_stats": self.resource_helper.collect_collectd_kpi(),
})
try:
curr_packets_in = int(((rx_total - self.prev_packets_in) * self.tsc_hz)
/ (tsc - self.prev_tsc))
except ZeroDivisionError:
LOG.error("Error.... Divide by Zero")
curr_packets_in = 0
try:
curr_packets_fwd = int(((tx_total - self.prev_packets_sent) * self.tsc_hz)
/ (tsc - self.prev_tsc))
except ZeroDivisionError:
LOG.error("Error.... Divide by Zero")
curr_packets_fwd = 0
result["curr_packets_in"] = curr_packets_in
result["curr_packets_fwd"] = curr_packets_fwd
self.prev_packets_in = rx_total
self.prev_packets_sent = tx_total
self.prev_tsc = tsc
LOG.debug("%s collect KPIs %s %s", self.APP_NAME, datetime.datetime.now(), result)
return result
def _tear_down(self):
# this should be standardized for all VNFs or removed
self.setup_helper.tear_down()
def terminate(self):
# stop collectd first or we get pika errors?
self.resource_helper.stop_collect()
# try to quit with socket commands
# pkill is not matching, debug with pgrep
self.ssh_helper.execute("sudo pgrep -lax %s" % self.setup_helper.APP_NAME)
self.ssh_helper.execute("sudo ps aux | grep -i %s" % self.setup_helper.APP_NAME)
if self._vnf_process.is_alive():
self.vnf_execute("stop_all")
self.vnf_execute("quit")
# hopefully quit succeeds and socket closes, so ignore force_quit socket errors
self.vnf_execute("force_quit", _ignore_errors=True)
self.setup_helper.kill_vnf()
self._tear_down()
if self._vnf_process is not None:
LOG.debug("joining before terminate %s", self._vnf_process.name)
self._vnf_process.join(constants.PROCESS_JOIN_TIMEOUT)
self._vnf_process.terminate()
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