1 # Copyright (c) 2017 Intel Corporation
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
7 # http://www.apache.org/licenses/LICENSE-2.0
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.
21 from yardstick.common.process import check_if_process_failed
22 from yardstick.network_services.vnf_generic.vnf.prox_helpers import ProxDpdkVnfSetupEnvHelper
23 from yardstick.network_services.vnf_generic.vnf.prox_helpers import ProxResourceHelper
24 from yardstick.network_services.vnf_generic.vnf.sample_vnf import SampleVNF, PROCESS_JOIN_TIMEOUT
26 LOG = logging.getLogger(__name__)
29 class ProxApproxVnf(SampleVNF):
33 PROX_MODE = "Workload"
34 VNF_PROMPT = "PROX started"
35 LUA_PARAMETER_NAME = "sut"
37 def __init__(self, name, vnfd, setup_env_helper_type=None, resource_helper_type=None):
38 if setup_env_helper_type is None:
39 setup_env_helper_type = ProxDpdkVnfSetupEnvHelper
41 if resource_helper_type is None:
42 resource_helper_type = ProxResourceHelper
44 self.prev_packets_in = 0
45 self.prev_packets_sent = 0
46 self.prev_time = time.time()
47 super(ProxApproxVnf, self).__init__(name, vnfd, setup_env_helper_type,
50 def _vnf_up_post(self):
51 self.resource_helper.up_post()
53 def vnf_execute(self, cmd, *args, **kwargs):
54 # try to execute with socket commands
55 # ignore socket errors, e.g. when using force_quit
56 ignore_errors = kwargs.pop("_ignore_errors", False)
58 return self.resource_helper.execute(cmd, *args, **kwargs)
60 if e.errno in {errno.EPIPE, errno.ESHUTDOWN, errno.ECONNRESET}:
62 LOG.debug("ignoring vnf_execute exception %s for command %s", e, cmd)
68 def collect_kpi(self):
69 # we can't get KPIs if the VNF is down
70 check_if_process_failed(self._vnf_process)
72 if self.resource_helper is None:
77 "collect_stats": {"core": {}},
81 # use all_ports so we only use ports matched in topology
82 port_count = len(self.vnfd_helper.port_pairs.all_ports)
83 if port_count not in {1, 2, 4}:
84 raise RuntimeError("Failed ..Invalid no of ports .. "
85 "1, 2 or 4 ports only supported at this time")
87 self.port_stats = self.vnf_execute('port_stats', range(port_count))
88 curr_time = time.time()
90 rx_total = self.port_stats[6]
91 tx_total = self.port_stats[7]
93 LOG.debug("port_stats parse fail ")
94 # return empty dict so we don't mess up existing KPIs
98 "packets_in": rx_total,
99 "packets_dropped": max((tx_total - rx_total), 0),
100 "packets_fwd": tx_total,
101 # we share ProxResourceHelper with TG, but we want to collect
102 # collectd KPIs here and not TG KPIs, so use a different method name
103 "collect_stats": self.resource_helper.collect_collectd_kpi(),
105 curr_packets_in = int((rx_total - self.prev_packets_in) / (curr_time - self.prev_time))
106 curr_packets_fwd = int((tx_total - self.prev_packets_sent) / (curr_time - self.prev_time))
108 result["curr_packets_in"] = curr_packets_in
109 result["curr_packets_fwd"] = curr_packets_fwd
111 self.prev_packets_in = rx_total
112 self.prev_packets_sent = tx_total
113 self.prev_time = curr_time
115 LOG.debug("%s collect KPIs %s %s", self.APP_NAME, datetime.datetime.now(), result)
118 def _tear_down(self):
119 # this should be standardized for all VNFs or removed
120 self.setup_helper.tear_down()
123 # stop collectd first or we get pika errors?
124 self.resource_helper.stop_collect()
125 # try to quit with socket commands
126 # pkill is not matching, debug with pgrep
127 self.ssh_helper.execute("sudo pgrep -lax %s" % self.setup_helper.APP_NAME)
128 self.ssh_helper.execute("sudo ps aux | grep -i %s" % self.setup_helper.APP_NAME)
129 if self._vnf_process.is_alive():
130 self.vnf_execute("stop_all")
131 self.vnf_execute("quit")
132 # hopefully quit succeeds and socket closes, so ignore force_quit socket errors
133 self.vnf_execute("force_quit", _ignore_errors=True)
134 self.setup_helper.kill_vnf()
136 if self._vnf_process is not None:
137 LOG.debug("joining before terminate %s", self._vnf_process.name)
138 self._vnf_process.join(PROCESS_JOIN_TIMEOUT)
139 self._vnf_process.terminate()