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##############################################################################
# Copyright (c) 2015 Ericsson AB and others.
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
##############################################################################
# ping scenario
from __future__ import print_function
from __future__ import absolute_import
import pkg_resources
import logging
import yardstick.ssh as ssh
from yardstick.common import utils
from yardstick.benchmark.scenarios import base
LOG = logging.getLogger(__name__)
class Ping(base.Scenario):
"""Execute ping between two hosts
If ping error, RTT will be set to 999999
Parameters
packetsize - number of data bytes to send
type: int
unit: bytes
default: 56
"""
__scenario_type__ = "Ping"
PING_ERROR_RTT = 999999
TARGET_SCRIPT = 'ping_benchmark.bash'
def __init__(self, scenario_cfg, context_cfg):
self.scenario_cfg = scenario_cfg
self.context_cfg = context_cfg
self.target_script = pkg_resources.resource_filename(
'yardstick.benchmark.scenarios.networking', Ping.TARGET_SCRIPT)
host = self.context_cfg['host']
self.connection = ssh.SSH.from_node(host, defaults={"user": "ubuntu"})
self.connection.wait(timeout=600)
def run(self, result):
"""execute the benchmark"""
if "options" in self.scenario_cfg:
options = "-s %s" % \
self.scenario_cfg['options'].get("packetsize", '56')
else:
options = ""
destination = self.context_cfg['target'].get('ipaddr', '127.0.0.1')
dest_list = [s.strip() for s in destination.split(',')]
rtt_result = {}
ping_result = {"rtt": rtt_result}
sla_max_rtt = self.scenario_cfg.get("sla", {}).get("max_rtt")
for pos, dest in enumerate(dest_list):
if 'targets' in self.scenario_cfg:
target_vm = self.scenario_cfg['targets'][pos]
else:
target_vm = self.scenario_cfg['target']
LOG.debug("ping %s %s", options, dest)
with open(self.target_script, "r") as stdin_file:
exit_status, stdout, stderr = self.connection.execute(
"/bin/sh -s {0} {1}".format(dest, options),
stdin=stdin_file)
if exit_status != 0:
raise RuntimeError(stderr)
if isinstance(target_vm, dict):
target_vm_name = target_vm.get("name")
else:
target_vm_name = target_vm.split('.')[0]
if stdout:
rtt_result[target_vm_name] = float(stdout.strip())
# store result before potential AssertionError
result.update(utils.flatten_dict_key(ping_result))
if sla_max_rtt is not None:
sla_max_rtt = float(sla_max_rtt)
self.verify_SLA(
rtt_result[target_vm_name] <= sla_max_rtt,
"rtt %f > sla: max_rtt(%f); "
% (rtt_result[target_vm_name], sla_max_rtt))
else:
LOG.error("ping '%s' '%s' timeout", options, target_vm)
# we need to specify a result to satisfy influxdb schema
# choose a very large number to inidcate timeout
# in this case choose an order of magnitude greater than the SLA
rtt_result[target_vm_name] = float(self.PING_ERROR_RTT)
# store result before potential AssertionError
result.update(utils.flatten_dict_key(ping_result))
self.verify_SLA(sla_max_rtt is None,
"packet dropped rtt %f > sla: max_rtt(%f)"
% (rtt_result[target_vm_name], sla_max_rtt))
self.verify_SLA(False,
"packet dropped rtt %f"
% (rtt_result[target_vm_name]))
def _test(): # pragma: no cover
"""internal test function"""
key_filename = pkg_resources.resource_filename("yardstick.resources",
"files/yardstick_key")
ctx = {
"host": {
"ip": "10.229.47.137",
"user": "root",
"key_filename": key_filename
},
"target": {
"ipaddr": "10.229.17.105",
}
}
logger = logging.getLogger("yardstick")
logger.setLevel(logging.DEBUG)
args = {}
result = {}
p = Ping(args, ctx)
p.run(result)
print(result)
if __name__ == '__main__': # pragma: no cover
_test()
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