code: def _detect_gce_environment():
      
      # NOTE: The explicit ``timeout`` is a workaround. The underlying
      #       issue is that resolving an unknown host on some networks will take
      #       20-30 seconds; making this timeout short fixes the issue, but
      #       could lead to false negatives in the event that we are on GCE, but
      #       the metadata resolution was particularly slow. The latter case is
      #       "unlikely".
      http = transport.get_http_object(timeout=GCE_METADATA_TIMEOUT)
      try:
          response, _ = transport.request(
              http, _GCE_METADATA_URI, headers=_GCE_HEADERS)
          return (
              response.status == http_client.OK and
              response.get(_METADATA_FLAVOR_HEADER) == _DESIRED_METADATA_FLAVOR)
      except socket.error:  # socket.timeout or socket.error(64, 'Host is down')
          logger.info('Timeout attempting to reach GCE metadata service.')
          return False
docs: Determine if the current environment is Compute Engine.
  
      Returns:
          Boolean indicating whether or not the current environment is Google
          Compute Engine.