text: """
  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.
  
  """
  
  from resource_management import *
  from hdfs_namenode import namenode
  from hdfs import hdfs
  
  
  class NameNode(Script):
    def install(self, env):
      import params
  
      self.install_packages(env, params.exclude_packages)
      env.set_params(params)
      #TODO we need this for HA because of manual steps
      self.configure(env)
  
    def start(self, env):
      import params
  
      env.set_params(params)
      self.configure(env)
      namenode(action="start")
  
    def stop(self, env):
      import params
  
      env.set_params(params)
      namenode(action="stop")
  
    def configure(self, env):
      import params
  
      env.set_params(params)
      hdfs()
      namenode(action="configure")
      pass
  
    def status(self, env):
      import status_params
  
      env.set_params(status_params)
      check_process_status(status_params.namenode_pid_file)
      pass
  
    def decommission(self, env):
      import params
  
      env.set_params(params)
      namenode(action="decommission")
      pass
  
  if __name__ == "__main__":
    NameNode().execute()
  