text: # Copyright (c) 2015 Mirantis Inc.
  #
  # 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.
  
  from shaker.engine.executors import flent
  from shaker.engine.executors import iperf
  from shaker.engine.executors import netperf
  from shaker.engine.executors import shell
  from shaker.engine.executors import fio
  
  
  EXECUTORS = {
      'shell': shell.ShellExecutor,
      'netperf': netperf.NetperfExecutor,
      'iperf': iperf.IperfExecutor,
      'iperf_graph': iperf.IperfGraphExecutor,
      'iperf3': iperf.Iperf3Executor,
      'flent': flent.FlentExecutor,
      'fio': fio.FioExecutor,
      '_default': shell.ShellExecutor,
  }
  
  
  def get_executor(test_definition, agent):
      # returns executor of the specified test on the specified agent
      executor_class = test_definition['class']
      klazz = EXECUTORS.get(executor_class, EXECUTORS['_default'])
      return klazz(test_definition, agent)
  