text: #!/usr/bin/python
  """
  Licensed to the Apache Software Foundation (ASF) under one
  or more contributor license agreements.  See the NOTICE file
  distributed with this work for additional information
  regarding copyright ownership.  The ASF licenses this file
  to you 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.
  
  """
  
  import sys
  from resource_management.libraries.script.script import Script
  from resource_management.libraries.functions import conf_select, stack_select
  from resource_management.libraries.functions.stack_features import check_stack_feature
  from resource_management.libraries.functions.constants import StackFeature
  from resource_management.core.exceptions import ClientComponentHasNoStatus
  from resource_management.core.logger import Logger
  from resource_management.core import shell
  from setup_spark import setup_spark
  
  
  class SparkClient(Script):
    def install(self, env):
      self.install_packages(env)
      self.configure(env)
  
    def configure(self, env, upgrade_type=None):
      import params
      env.set_params(params)
      
      setup_spark(env, 'client', upgrade_type=upgrade_type, action = 'config')
  
    def status(self, env):
      raise ClientComponentHasNoStatus()
    
    def get_component_name(self):
      return "spark2-client"
  
    def pre_upgrade_restart(self, env, upgrade_type=None):
      import params
  
      env.set_params(params)
      if params.version and check_stack_feature(StackFeature.ROLLING_UPGRADE, params.version):
        Logger.info("Executing Spark2 Client Stack Upgrade pre-restart")
        conf_select.select(params.stack_name, "spark", params.version)
        stack_select.select("spark2-client", params.version)
  
  if __name__ == "__main__":
    SparkClient().execute()
  
  