#!/router/bin/python
__copyright__ = "Copyright 2014"
"""
Name:
trex_general_test.py
Description:
This script creates the functionality to test the performance of the T-Rex traffic generator
The tested scenario is a T-Rex TG directly connected to a Cisco router.
::
Topology:
------- --------
| | Tx---1gig/10gig----Rx | |
| T-Rex | | router |
| | Rx---1gig/10gig----Tx | |
------- --------
"""
from nose.plugins import Plugin
from nose.plugins.skip import SkipTest
import trex
import misc_methods
import sys
import os
# from CPlatformUnderTest import *
from CPlatform import *
import termstyle
import threading
from tests_exceptions import *
from platform_cmd_link import *
import unittest
class CTRexScenario():
modes = set() # list of modes of this setup: loopback, virtual etc.
server_logs = False
is_test_list = False
is_init = False
trex_crashed = False
configuration = None
trex = None
router = None
router_cfg = None
daemon_log_lines = 0
setup_name = None
setup_dir = None
router_image = None
trex_version = None
scripts_path = None
benchmark = None
report_dir = 'reports'
# logger = None
#scenario = CTRexScenario()
def setUpModule(module):
# print ("") # this is to get a newline after the dots
# print ("setup_module before anything in this file")
# # ff = CTRexScenario()
# scenario.configuration = misc_methods.load_complete_config_file('config/config.yaml')
# scenario.trex = trex.CTRexRunner(scenario.configuration[0], None)
# scenario.router = CPlatform(scenario.configuration[1], False, scenario.configuration[2])
# scenario.router.platform.preCheck()
# print "Done instantiating trex scenario!"
pass
def tearDownModule(module):
# print ("") # this is to get a newline after the dots
# scenario.router.platform.postCheck()
# print ("teardown_module after anything in this file")
pass
class CTRexGeneral_Test(unittest.TestCase):
"""This class defines the general testcase of the T-Rex traffic generator"""
def __init__ (self, *args, **kwargs):
unittest.TestCase.__init__(self, *args, **kwargs)
if CTRexScenario.is_test_list:
return
# Point test object to scenario global object
self.configuration = CTRexScenario.configuration
self.benchmark = CTRexScenario.benchmark
self.trex = CTRexScenario.trex
self.trex_crashed = CTRexScenario.trex_crashed
self.modes = CTRexScenario.modes
self.skipping = False
self.fail_reasons = []
if not hasattr(self, 'unsupported_modes'):
self.unsupported_modes = []
self.is_loopback = True if 'loopback' in self.modes else False
self.is_virt_nics = True if 'virt_nics' in self.modes else False
self.is_VM = True if 'VM' in self.modes else False
if not CTRexScenario.is_init:
CTRexScenario.trex_version = self.trex.get_trex_version()
if not self.is_loopback:
# initilize the scenario based on received configuration, once per entire testing session
CTRexScenario.router = CPlatform(CTRexScenario.router_cfg['silent_mode'])
device_cfg = CDeviceCfg()
device_cfg.set_platform_config(CTRexScenario.router_cfg['config_dict'])
device_cfg.set_tftp_config(CTRexScenario.router_cfg['tftp_config_dict'])
CTRexScenario.router.load_platform_data_from_file(device_cfg)
CTRexScenario.router.launch_connection(device_cfg)
running_image = CTRexScenario.router.get_running_image_details()['image']
print 'Current router image: %s' % running_image
if CTRexScenario.router_cfg['forceImageReload']:
needed_image = device_cfg.get_image_name()
if not CTRexScenario.router.is_image_matches(needed_image):
print 'Setting router image: %s' % needed_image
CTRexScenario.router.config_tftp_server(device_cfg)
CTRexScenario.router.load_platform_image(needed_image)
CTRexScenario.router.set_boot_image(needed_image)
CTRexScenario.router.reload_platform(device_cfg)
CTRexScenario.router.launch_connection(device_cfg)
running_image = CTRexScenario.router.get_running_image_details()['image'] # verify image
if not CTRexScenario.router.is_image_matches(needed_image):
self.fail('Unable to set router image: %s, current image is: %s' % (needed_image, running_image))
else:
print 'Matches needed image: %s' % needed_image
CTRexScenario.router_image = running_image
if self.modes:
print termstyle.green('\t!!!\tRunning with modes: %s, not suitable tests will be skipped.\t!!!' % list(self.modes))
CTRexScenario.is_init = True
print termstyle.green("Done instantiating T-Rex scenario!\n")
# raise RuntimeError('CTRexScenario class is not initialized!')
self.router = CTRexScenario.router
# def assert_dict_eq (self, dict, key, val, error=''):
# v1 = int(dict[key]))
# self.assertEqual(v1, int(val), error)
#
# def assert_dict_gt (self, d, key, val, error=''):
# v1 = int(dict[key])
# self.assert_gt(v1, int(val), error)
def assertEqual(self, v1, v2, s):
if v1 != v2:
error='ERROR '+str(v1)+' != '+str(v2)+ ' '+s;
self.fail(error)
def assert_gt(self, v1, v2, s):
if not v1 > v2:
error='ERROR {big} < {small} {str}'.format(big = v1, small = v2, str = s)
self.fail(error)
def check_results_eq (self,res,name,val):
if res is None:
self.fail('TRex results cannot be None !')
return
if name not in res:
self.fail('TRex results does not include key %s' % name)
return
if res[name] != float(val):
self.fail('TRex results[%s]==%f and not as expected %f ' % (name, res[name], val))
def check_CPU_benchmark (self, trex_res, err = 10, minimal_cpu = 30, maximal_cpu = 85):
#cpu_util = float(trex_res.get_last_value("trex-global.data.m_cpu_util"))
cpu_util = sum([float(x) for x in trex_res.get_value_list("trex-global.data.m_cpu_util")[-4:-1]]) / 3 # mean of 3 values before last
if not self.is_virt_nics:
if cpu_util > maximal_cpu:
self.fail("CPU is too high (%s%%), probably queue full." % cpu_util )
if cpu_util < minimal_cpu:
self.fail("CPU is too low (%s%%), can't verify performance in such low CPU%%." % cpu_util )
cores = self.get_benchmark_param('cores')
trex_tx_bps = trex_res.get_last_value("trex-global.data.m_total_tx_bytes")
test_norm_cpu = 100.0*(trex_tx_bps/(cores*cpu_util))/1e6
print "TRex CPU utilization: %g%%, norm_cpu is : %d Mb/core" % (round(cpu_util), int(test_norm_cpu))
#expected_norm_cpu = self.get_benchmark_param('cpu_to_core_ratio')
#calc_error_precent = abs(100.0*(test_norm_cpu/expected_norm_cpu)-100.0)
# if calc_error_precent > err:
# msg ='Normalized bandwidth to CPU utilization ratio is %2.0f Mb/core expected %2.0f Mb/core more than %2.0f %% - ERROR' % (test_norm_cpu, expected_norm_cpu, err)
# raise AbnormalResultError(msg)
# else:
# msg ='Normalized bandwidth to CPU utilization ratio is %2.0f Mb/core expected %2.0f Mb/core less than %2.0f %% - OK' % (test_norm_cpu, expected_norm_cpu, err)
# print msg
def check_results_gt (self, res, name, val):
if res is None:
self.fail('TRex results canot be None !')
return
if name not in res:
self.fail('TRex results does not include key %s' % name)
return
if res[name]< float(val):
self.fail('TRex results[%s]<%f and not as expected greater than %f ' % (name, res[name], val))
def check_for_trex_crash(self):
pass
def get_benchmark_param (self, param, sub_param = None, test_name = None):
if not test_name:
test_name = self.get_name()
if test_name not in self.benchmark:
self.skip('No data in benchmark.yaml for test: %s, param: %s. Skipping.' % (test_name, param))
if sub_param:
return self.benchmark[test_name][param].get(sub_param)
else:
return self.benchmark[test_name].get(param)
def check_general_scenario_results (self, trex_res, check_latency = True):
try:
# check if test is valid
if not trex_res.is_done_warmup():
self.fail('T-Rex did not reach warm-up situtaion. Results are not valid.')
# check history size is enough
if len(trex_res._history) < 5:
self.fail('T-Rex results list is too short. Increase the test duration or check unexpected stopping.')
# check T-Rex number of drops
trex_tx_pckt = trex_res.get_last_value("trex-global.data.m_total_tx_pkts")
trex_drops = trex_res.get_total_drops()
trex_drop_rate = trex_res.get_drop_rate()
if ( trex_drops > 0.001 * trex_tx_pckt) and (trex_drop_rate > 0.0): # deliberately mask kickoff drops when T-Rex first initiated
self.fail('Number of packet drops larger than 0.1% of all traffic')
# check queue full, queue drop, allocation error
m_total_alloc_error = trex_res.get_last_value("trex-global.data.m_total_alloc_error")
m_total_queue_full = trex_res.get_last_value("trex-global.data.m_total_queue_full")
m_total_queue_drop = trex_res.get_last_value("trex-global.data.m_total_queue_drop")
self.assert_gt( 999, m_total_alloc_error, 'Got allocation errors. (%s), please review multiplier and templates configuration.' % m_total_alloc_error)
self.assert_gt( max(9999, trex_tx_pckt / 1000 ), m_total_queue_full, 'Too much queue_full (%s), please review multiplier.' % m_total_queue_full)
self.assert_gt( 999, m_total_queue_drop, 'Too much queue_drop (%s), please review multiplier.' % m_total_queue_drop)
# # check T-Rex expected counters
#trex_exp_rate = trex_res.get_expected_tx_rate().get('m_tx_expected_bps')
#assert trex_exp_rate is not None
#trex_exp_gbps = trex_exp_rate/(10**9)
if check_latency:
# check that max latency does not exceed 1 msec in regular setup or 100ms in VM
allowed_latency = 9999999 if self.is_VM else 1000
if max(trex_res.get_max_latency().values()) > allowed_latency:
self.fail('LatencyError: Maximal latency exceeds %s (usec)' % allowed_latency)
# check that avg latency does not exceed 1 msec in regular setup or 3ms in VM
allowed_latency = 9999999 if self.is_VM else 1000
if max(trex_res.get_avg_latency().values()) > allowed_latency:
self.fail('LatencyError: Average latency exceeds %s (usec)' % allowed_latency)
if not self.is_loopback:
# check router number of drops --> deliberately masked- need to be figured out!!!!!
pkt_drop_stats = self.router.get_drop_stats()
# assert pkt_drop_stats['total_drops'] < 20
# check for trex-router packet consistency
# TODO: check if it's ok
print 'router drop stats: %s' % pkt_drop_stats
print 'TRex drop stats: %s' % trex_drops
#self.assertEqual(pkt_drop_stats, trex_drops, "TRex's and router's drop stats don't match.")
except KeyError as e:
self.fail(e)
#assert False
# except AssertionError as e:
# e.args += ('T-Rex has crashed!')
# raise
# We encountered error, don't fail the test immediately
def fail(self, reason = 'Unknown error'):
print 'Error: %s' % reason
self.fail_reasons.append(reason)
# skip running of the test, counts as 'passed' but prints 'skipped'
def skip(self, message = 'Unknown reason'):
print 'Skip: %s' % message
self.skipping = True
raise SkipTest(message)
# get name of currently running test
def get_name(self):
return self._testMethodName
def setUp(self):
test_setup_modes_conflict = self.modes & set(self.unsupported_modes)
if test_setup_modes_conflict:
self.skip("The test can't run with following modes of given setup: %s " % test_setup_modes_conflict)
if not self.trex.is_idle():
print 'Warning: TRex is not idle at setUp, trying to stop it.'
self.trex.force_kill(confirm = False)
if not self.is_loopback:
print ''
self.router.load_clean_config()
self.router.clear_counters()
self.router.clear_packet_drop_stats()
########################################################################
#### DO NOT ADD TESTS TO THIS FILE ####
#### Added tests here will held once for EVERY test sub-class ####
########################################################################
# masked example to such test. uncomment to watch how it affects #
# def test_isInitialized(self):
# assert CTRexScenario.is_init == True
def tearDown(self):
if not self.trex.is_idle():
print 'Warning: TRex is not idle at tearDown, trying to stop it.'
self.trex.force_kill(confirm = False)
if not self.skipping:
# print server logs of test run
if CTRexScenario.server_logs:
try:
print termstyle.green('\n>>>>>>>>>>>>>>> Daemon log <<<<<<<<<<<<<<<')
daemon_log = self.trex.get_trex_daemon_log()
log_size = len(daemon_log)
print ''.join(daemon_log[CTRexScenario.daemon_log_lines:])
CTRexScenario.daemon_log_lines = log_size
except Exception as e:
print "Can't get TRex daemon log:", e
try:
print termstyle.green('>>>>>>>>>>>>>>>> Trex log <<<<<<<<<<<<<<<<')
print ''.join(self.trex.get_trex_log())
except Exception as e:
print "Can't get TRex log:", e
if len(self.fail_reasons):
raise Exception('The test is failed, reasons:\n%s' % '\n'.join(self.fail_reasons))
def check_for_trex_crash(self):
pass