text: import logging
  
  from azure.durable_functions import DurableOrchestrationClient
  import azure.functions as func
  
  
  async def main(req: func.HttpRequest, starter: str) -> func.HttpResponse:
      """This function starts up the orchestrator from an HTTP endpoint
  
      Parameters
      ----------
      req: func.HttpRequest
          An HTTP Request object, it can be used to parse URL
          parameters.
  
      starter: str
          A JSON-formatted string describing the orchestration context
  
      Returns
      -------
      func.HttpResponse
          An HTTP response containing useful URLs for monitoring the
          status of newly generated orchestration instance
      """
  
      logging.debug("Recevied http request call with value {}".format(starter))
      function_name = req.route_params.get('functionName')
      client = DurableOrchestrationClient(starter)
  
      logging.debug("About to call function {} asyncrounously".format(function_name))
      instance_id = await client.start_new(function_name)
  
      return client.create_check_status_response(req, instance_id)
  