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 from __future__ import print_function
  13 from __future__ import absolute_import
  14 import pkg_resources
  15 import logging
  16
  17 import yardstick.ssh as ssh
  18 from yardstick.benchmark.scenarios import base
  19
  20 LOG = logging.getLogger(__name__)
  21
  22
  23 class Ping(base.Scenario):
  24     """Execute ping between two hosts
  25
  26   Parameters
  27     packetsize - number of data bytes to send
  28         type:    int
  29         unit:    bytes
  30         default: 56
  31     """
  32
  33     __scenario_type__ = "Ping"
  34
  35     TARGET_SCRIPT = 'ping_benchmark.bash'
  36
  37     def __init__(self, scenario_cfg, context_cfg):
  38         self.scenario_cfg = scenario_cfg
  39         self.context_cfg = context_cfg
  40         self.target_script = pkg_resources.resource_filename(
  41             'yardstick.benchmark.scenarios.networking', Ping.TARGET_SCRIPT)
  42         host = self.context_cfg['host']
  43
  44         self.connection = ssh.SSH.from_node(host, defaults={"user": "ubuntu"})
  45
  46         self.connection.wait(timeout=600)
  47
  48     def run(self, result):
  49         """execute the benchmark"""
  50
  51         if "options" in self.scenario_cfg:
  52             options = "-s %s" % \
  53                 self.scenario_cfg['options'].get("packetsize", '56')
  54         else:
  55             options = ""
  56
  57         destination = self.context_cfg['target'].get('ipaddr', '127.0.0.1')
  58         dest_list = [s.strip() for s in destination.split(',')]
  59
  60         result["rtt"] = {}
  61         rtt_result = result["rtt"]
  62
  63         for pos, dest in enumerate(dest_list):
  64             if 'targets' in self.scenario_cfg:
  65                 target_vm = self.scenario_cfg['targets'][pos]
  66             else:
  67                 target_vm = self.scenario_cfg['target']
  68
  69             LOG.debug("ping '%s' '%s'", options, dest)
  70             with open(self.target_script, "r") as stdin_file:
  71                 exit_status, stdout, stderr = self.connection.execute(
  72                     "/bin/sh -s {0} {1}".format(dest, options),
  73                     stdin=stdin_file)
  74
  75             if exit_status != 0:
  76                 raise RuntimeError(stderr)
  77
  78             if stdout:
  79                 target_vm_name = target_vm.split('.')[0]
  80                 rtt_result[target_vm_name] = float(stdout)
  81                 if "sla" in self.scenario_cfg:
  82                     sla_max_rtt = int(self.scenario_cfg["sla"]["max_rtt"])
  83                     assert rtt_result[target_vm_name] <= sla_max_rtt,\
  84                         "rtt %f > sla: max_rtt(%f); " % \
  85                         (rtt_result[target_vm_name], sla_max_rtt)
  86             else:
  87                 LOG.error("ping '%s' '%s' timeout", options, target_vm)
  88
  89
  90 def _test():    # pragma: no cover
  91     """internal test function"""
  92     key_filename = pkg_resources.resource_filename("yardstick.resources",
  93                                                    "files/yardstick_key")
  94     ctx = {
  95         "host": {
  96             "ip": "10.229.47.137",
  97             "user": "root",
  98             "key_filename": key_filename
  99         },
 100         "target": {
 101             "ipaddr": "10.229.17.105",
 102         }
 103     }
 104
 105     logger = logging.getLogger("yardstick")
 106     logger.setLevel(logging.DEBUG)
 107
 108     args = {}
 109     result = {}
 110
 111     p = Ping(args, ctx)
 112     p.run(result)
 113     print(result)
 114
 115
 116 if __name__ == '__main__':    # pragma: no cover
 117     _test()