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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
##############################################################################
""" Scenario base class
"""
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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