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##############################################################################
# Copyright (c) 2015 Ericsson AB and others.
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
##############################################################################
'''A runner that every run arithmetically steps a specified input value to
the scenario. This just means a step value is added to the previous value.
'''
import os
import multiprocessing
import logging
import traceback
import time
from yardstick.benchmark.runners import base
LOG = logging.getLogger(__name__)
def _worker_process(queue, cls, method_name, context, scenario_args):
sequence = 1
interval = context.get("interval", 1)
arg_name = context.get('name')
stop = context.get('stop')
step = context.get('step')
options = scenario_args['options']
start = options.get(arg_name, 0)
context['runner'] = os.getpid()
LOG.info("worker START, step(%s, %d, %d, %d), class %s",
arg_name, start, stop, step, cls)
benchmark = cls(context)
benchmark.setup()
method = getattr(benchmark, method_name)
record_context = {"runner": context["runner"],
"host": context["host"]}
sla_action = None
if "sla" in scenario_args:
sla_action = scenario_args["sla"].get("action", "assert")
for value in range(start, stop+step, step):
options[arg_name] = value
LOG.debug("runner=%(runner)s seq=%(sequence)s START" %
{"runner": context["runner"], "sequence": sequence})
data = {}
errors = ""
try:
data = method(scenario_args)
except AssertionError as assertion:
# SLA validation failed in scenario, determine what to do now
if sla_action == "assert":
raise
elif sla_action == "monitor":
LOG.warning("SLA validation failed: %s" % assertion.args)
errors = assertion.args
except Exception as e:
errors = traceback.format_exc()
LOG.exception(e)
time.sleep(interval)
benchmark_output = {
'timestamp': time.time(),
'sequence': sequence,
'data': data,
'errors': errors
}
queue.put({'context': record_context, 'sargs:': scenario_args,
'benchmark': benchmark_output})
LOG.debug("runner=%(runner)s seq=%(sequence)s END" %
{"runner": context["runner"], "sequence": sequence})
sequence += 1
if errors:
break
benchmark.teardown()
LOG.info("worker END")
class ArithmeticRunner(base.Runner):
__execution_type__ = 'Arithmetic'
def _run_benchmark(self, cls, method, scenario_args):
self.process = multiprocessing.Process(
target=_worker_process,
args=(self.result_queue, cls, method, self.config, scenario_args))
self.process.start()
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