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         user = host.get('user', 'ubuntu')
  44         ssh_port = host.get("ssh_port", ssh.DEFAULT_PORT)
  45         ip = host.get('ip', None)
  46         key_filename = host.get('key_filename', '/root/.ssh/id_rsa')
  47         password = host.get('password', None)
  48
  49         if password is not None:
  50             LOG.info("Log in via pw, user:%s, host:%s, pw:%s",
  51                      user, ip, password)
  52             self.connection = ssh.SSH(user, ip, password=password,
  53                                       port=ssh_port)
  54         else:
  55             LOG.info("Log in via key, user:%s, host:%s, key_filename:%s",
  56                      user, ip, key_filename)
  57             self.connection = ssh.SSH(user, ip, key_filename=key_filename,
  58                                       port=ssh_port)
  59
  60         self.connection.wait(timeout=600)
  61
  62     def run(self, result):
  63         """execute the benchmark"""
  64
  65         if "options" in self.scenario_cfg:
  66             options = "-s %s" % \
  67                 self.scenario_cfg['options'].get("packetsize", '56')
  68         else:
  69             options = ""
  70
  71         destination = self.context_cfg['target'].get('ipaddr', '127.0.0.1')
  72         dest_list = [s.strip() for s in destination.split(',')]
  73
  74         result["rtt"] = {}
  75         rtt_result = result["rtt"]
  76
  77         for pos, dest in enumerate(dest_list):
  78             if 'targets' in self.scenario_cfg:
  79                 target_vm = self.scenario_cfg['targets'][pos]
  80             else:
  81                 target_vm = self.scenario_cfg['target']
  82
  83             LOG.debug("ping '%s' '%s'", options, dest)
  84             with open(self.target_script, "r") as stdin_file:
  85                 exit_status, stdout, stderr = self.connection.execute(
  86                     "/bin/sh -s {0} {1}".format(dest, options),
  87                     stdin=stdin_file)
  88
  89             if exit_status != 0:
  90                 raise RuntimeError(stderr)
  91
  92             if stdout:
  93                 target_vm_name = target_vm.split('.')[0]
  94                 rtt_result[target_vm_name] = float(stdout)
  95                 if "sla" in self.scenario_cfg:
  96                     sla_max_rtt = int(self.scenario_cfg["sla"]["max_rtt"])
  97                     assert rtt_result[target_vm_name] <= sla_max_rtt,\
  98                         "rtt %f > sla: max_rtt(%f); " % \
  99                         (rtt_result[target_vm_name], sla_max_rtt)
 100             else:
 101                 LOG.error("ping '%s' '%s' timeout", options, target_vm)
 102
 103
 104 def _test():    # pragma: no cover
 105     '''internal test function'''
 106     key_filename = pkg_resources.resource_filename("yardstick.resources",
 107                                                    "files/yardstick_key")
 108     ctx = {
 109         "host": {
 110             "ip": "10.229.47.137",
 111             "user": "root",
 112             "key_filename": key_filename
 113         },
 114         "target": {
 115             "ipaddr": "10.229.17.105",
 116         }
 117     }
 118
 119     logger = logging.getLogger("yardstick")
 120     logger.setLevel(logging.DEBUG)
 121
 122     args = {}
 123     result = {}
 124
 125     p = Ping(args, ctx)
 126     p.run(result)
 127     print(result)
 128
 129
 130 if __name__ == '__main__':    # pragma: no cover
 131     _test()