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# Copyright 2013: Mirantis Inc.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
# yardstick comment: this is a modified copy of
# rally/rally/benchmark/scenarios/base.py
""" Scenario base class
"""
from __future__ import absolute_import
import yardstick.common.utils as utils
class Scenario(object):
def setup(self):
""" default impl for scenario setup """
pass
def run(self, args):
""" catcher for not implemented run methods in subclasses """
raise RuntimeError("run method not implemented")
def teardown(self):
""" default impl for scenario teardown """
pass
@staticmethod
def get_types():
"""return a list of known runner type (class) names"""
scenarios = []
for scenario in utils.itersubclasses(Scenario):
scenarios.append(scenario)
return scenarios
@staticmethod
def get_cls(scenario_type):
"""return class of specified type"""
for scenario in utils.itersubclasses(Scenario):
if scenario_type == scenario.__scenario_type__:
return scenario
raise RuntimeError("No such scenario type %s" % scenario_type)
@staticmethod
def get(scenario_type):
"""Returns instance of a scenario runner for execution type.
"""
for scenario in utils.itersubclasses(Scenario):
if scenario_type == scenario.__scenario_type__:
return scenario.__module__ + "." + scenario.__name__
raise RuntimeError("No such scenario type %s" % scenario_type)
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