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', '/root/.ssh/id_rsa')
  44         password = host.get('password', None)
  45
  46         if password is not None:
  47             LOG.info("Log in via pw, user:%s, host:%s, pw:%s",
  48                      user, ip, password)
  49             self.connection = ssh.SSH(user, ip, password=password)
  50         else:
  51             LOG.info("Log in via key, user:%s, host:%s, key_filename:%s",
  52                      user, ip, key_filename)
  53             self.connection = ssh.SSH(user, ip, key_filename=key_filename)
  54
  55         self.connection.wait()
  56
  57     def run(self, result):
  58         """execute the benchmark"""
  59
  60         if "options" in self.scenario_cfg:
  61             options = "-s %s" % \
  62                 self.scenario_cfg['options'].get("packetsize", '56')
  63         else:
  64             options = ""
  65
  66         destination = self.context_cfg['target'].get('ipaddr', '127.0.0.1')
  67         dest_list = [s.strip() for s in destination.split(',')]
  68
  69         result["rtt"] = {}
  70         rtt_result = result["rtt"]
  71
  72         for dest in dest_list:
  73             LOG.debug("ping '%s' '%s'", options, dest)
  74             exit_status, stdout, stderr = self.connection.execute(
  75                 "/bin/sh -s {0} {1}".format(dest, options),
  76                 stdin=open(self.target_script, "r"))
  77
  78             if exit_status != 0:
  79                 raise RuntimeError(stderr)
  80
  81             if stdout:
  82                 rtt_result[dest] = float(stdout)
  83                 if "sla" in self.scenario_cfg:
  84                     sla_max_rtt = int(self.scenario_cfg["sla"]["max_rtt"])
  85                     assert rtt_result[dest] <= sla_max_rtt, "rtt %f > sla:\
  86                     max_rtt(%f); " % (rtt_result[dest], sla_max_rtt)
  87             else:
  88                 LOG.error("ping '%s' '%s' timeout", options, dest)
  89
  90
  91 def _test():    # pragma: no cover
  92     '''internal test function'''
  93     key_filename = pkg_resources.resource_filename("yardstick.resources",
  94                                                    "files/yardstick_key")
  95     ctx = {
  96         "host": {
  97             "ip": "10.229.47.137",
  98             "user": "root",
  99             "key_filename": key_filename
 100         },
 101         "target": {
 102             "ipaddr": "10.229.17.105",
 103         }
 104     }
 105
 106     logger = logging.getLogger("yardstick")
 107     logger.setLevel(logging.DEBUG)
 108
 109     args = {}
 110     result = {}
 111
 112     p = Ping(args, ctx)
 113     p.run(result)
 114     print result
 115
 116 if __name__ == '__main__':    # pragma: no cover
 117     _test()