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.common import utils
  19 from yardstick.benchmark.scenarios import base
  20
  21 LOG = logging.getLogger(__name__)
  22
  23
  24 class Ping(base.Scenario):
  25     """Execute ping between two hosts
  26
  27   Parameters
  28     packetsize - number of data bytes to send
  29         type:    int
  30         unit:    bytes
  31         default: 56
  32     """
  33
  34     __scenario_type__ = "Ping"
  35
  36     TARGET_SCRIPT = 'ping_benchmark.bash'
  37
  38     def __init__(self, scenario_cfg, context_cfg):
  39         self.scenario_cfg = scenario_cfg
  40         self.context_cfg = context_cfg
  41         self.target_script = pkg_resources.resource_filename(
  42             'yardstick.benchmark.scenarios.networking', Ping.TARGET_SCRIPT)
  43         host = self.context_cfg['host']
  44
  45         self.connection = ssh.SSH.from_node(host, defaults={"user": "ubuntu"})
  46
  47         self.connection.wait(timeout=600)
  48
  49     def run(self, result):
  50         """execute the benchmark"""
  51
  52         if "options" in self.scenario_cfg:
  53             options = "-s %s" % \
  54                 self.scenario_cfg['options'].get("packetsize", '56')
  55         else:
  56             options = ""
  57
  58         destination = self.context_cfg['target'].get('ipaddr', '127.0.0.1')
  59         dest_list = [s.strip() for s in destination.split(',')]
  60
  61         rtt_result = {}
  62         ping_result = {"rtt": rtt_result}
  63
  64         for pos, dest in enumerate(dest_list):
  65             if 'targets' in self.scenario_cfg:
  66                 target_vm = self.scenario_cfg['targets'][pos]
  67             else:
  68                 target_vm = self.scenario_cfg['target']
  69
  70             LOG.debug("ping '%s' '%s'", options, dest)
  71             with open(self.target_script, "r") as stdin_file:
  72                 exit_status, stdout, stderr = self.connection.execute(
  73                     "/bin/sh -s {0} {1}".format(dest, options),
  74                     stdin=stdin_file)
  75
  76             if exit_status != 0:
  77                 raise RuntimeError(stderr)
  78
  79             if stdout:
  80                 if isinstance(target_vm, dict):
  81                     target_vm_name = target_vm.get("name")
  82                 else:
  83                     target_vm_name = target_vm.split('.')[0]
  84                 rtt_result[target_vm_name] = float(stdout)
  85                 if "sla" in self.scenario_cfg:
  86                     sla_max_rtt = int(self.scenario_cfg["sla"]["max_rtt"])
  87                     assert rtt_result[target_vm_name] <= sla_max_rtt,\
  88                         "rtt %f > sla: max_rtt(%f); " % \
  89                         (rtt_result[target_vm_name], sla_max_rtt)
  90             else:
  91                 LOG.error("ping '%s' '%s' timeout", options, target_vm)
  92         result.update(utils.flatten_dict_key(ping_result))
  93
  94
  95 def _test():    # pragma: no cover
  96     """internal test function"""
  97     key_filename = pkg_resources.resource_filename("yardstick.resources",
  98                                                    "files/yardstick_key")
  99     ctx = {
 100         "host": {
 101             "ip": "10.229.47.137",
 102             "user": "root",
 103             "key_filename": key_filename
 104         },
 105         "target": {
 106             "ipaddr": "10.229.17.105",
 107         }
 108     }
 109
 110     logger = logging.getLogger("yardstick")
 111     logger.setLevel(logging.DEBUG)
 112
 113     args = {}
 114     result = {}
 115
 116     p = Ping(args, ctx)
 117     p.run(result)
 118     print(result)
 119
 120
 121 if __name__ == '__main__':    # pragma: no cover
 122     _test()