yardstick/benchmark/scenarios/networking/ping.py

   1 ##############################################################################
   2 # Copyright (c) 2015 Ericsson AB and others.
   3 #
   4 # All rights reserved. This program and the accompanying materials
   5 # are made available under the terms of the Apache License, Version 2.0
   6 # which accompanies this distribution, and is available at
   7 # http://www.apache.org/licenses/LICENSE-2.0
   8 ##############################################################################
   9
  10 # ping scenario
  11
  12 import pkg_resources
  13 import logging
  14
  15 import yardstick.ssh as ssh
  16 from yardstick.benchmark.scenarios import base
  17
  18 LOG = logging.getLogger(__name__)
  19
  20
  21 class Ping(base.Scenario):
  22     """Execute ping between two hosts
  23
  24   Parameters
  25     packetsize - number of data bytes to send
  26         type:    int
  27         unit:    bytes
  28         default: 56
  29     """
  30
  31     __scenario_type__ = "Ping"
  32
  33     TARGET_SCRIPT = 'ping_benchmark.bash'
  34
  35     def __init__(self, scenario_cfg, context_cfg):
  36         self.scenario_cfg = scenario_cfg
  37         self.context_cfg = context_cfg
  38         self.target_script = pkg_resources.resource_filename(
  39             'yardstick.benchmark.scenarios.networking', Ping.TARGET_SCRIPT)
  40         host = self.context_cfg['host']
  41         user = host.get('user', 'ubuntu')
  42         ip = host.get('ip', None)
  43         key_filename = host.get('key_filename', '~/.ssh/id_rsa')
  44
  45         LOG.info("user:%s, host:%s", user, ip)
  46
  47         self.connection = ssh.SSH(user, ip, key_filename=key_filename)
  48         self.connection.wait()
  49
  50     def run(self, result):
  51         """execute the benchmark"""
  52
  53         if "options" in self.scenario_cfg:
  54             options = "-s %s" % \
  55                 self.scenario_cfg['options'].get("packetsize", '56')
  56         else:
  57             options = ""
  58
  59         destination = self.context_cfg['target'].get("ipaddr", '127.0.0.1')
  60
  61         LOG.debug("ping '%s' '%s'", options, destination)
  62
  63         exit_status, stdout, stderr = self.connection.execute(
  64             "/bin/sh -s {0} {1}".format(destination, options),
  65             stdin=open(self.target_script, "r"))
  66
  67         if exit_status != 0:
  68             raise RuntimeError(stderr)
  69
  70         result["rtt"] = float(stdout)
  71
  72         if "sla" in self.scenario_cfg:
  73             sla_max_rtt = int(self.scenario_cfg["sla"]["max_rtt"])
  74             assert result["rtt"] <= sla_max_rtt, "rtt %f > sla:max_rtt(%f); " % \
  75                 (result["rtt"], sla_max_rtt)
  76
  77
  78 def _test():
  79     '''internal test function'''
  80     key_filename = pkg_resources.resource_filename("yardstick.resources",
  81                                                    "files/yardstick_key")
  82     ctx = {
  83         "host": {
  84             "ip": "10.229.47.137",
  85             "user": "root",
  86             "key_filename": key_filename
  87         },
  88         "target": {
  89             "ipaddr": "10.229.17.105",
  90         }
  91     }
  92
  93     logger = logging.getLogger("yardstick")
  94     logger.setLevel(logging.DEBUG)
  95
  96     args = {}
  97     result = {}
  98
  99     p = Ping(args, ctx)
 100     p.run(result)
 101     print result
 102
 103 if __name__ == '__main__':
 104     _test()