old_contents: ########
  # Copyright (c) 2014 GigaSpaces Technologies Ltd. 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.
  
  
  # ctx is imported and used in operations
  import os
  
  from cloudify import ctx
  from cloudify.decorators import operation
  
  
  @operation
  def start_server(**kwargs):
      command = 'cd {0}; nohup python -m SimpleHTTPServer {1}> /dev/null 2>&1' \
                ' & echo $! > /tmp/python-webserver.pid'.format('/tmp', 8000)
  
      ctx.logger.info('Starting HTTP server using: {0}'.format(command))
      os.system(command)
  
new_contents: ########
  # Copyright (c) 2014 GigaSpaces Technologies Ltd. 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.
  
  
  # ctx is imported and used in operations
  import os
  
  from cloudify import ctx
  from cloudify.decorators import operation
  
  
  @operation
  def start_server(port, **kwargs):
      command = 'cd {0}; nohup python -m SimpleHTTPServer {1}> /dev/null 2>&1' \
                ' & echo $! > /tmp/python-webserver.pid'.format('/tmp', port)
  
      ctx.logger.info('Starting HTTP server using: {0}'.format(command))
      os.system(command)
  
subject: add a parameter