text: from base64 import b64encode
  
  from libcloud.utils.py3 import b
  from libcloud.utils.py3 import httplib
  from libcloud.common.base import ConnectionUserAndKey, JsonResponse
  
  
  class OnAppResponse(JsonResponse):
      """
      OnApp response class
      """
  
      def success(self):
          """
          Determine if our request was successful.
  
          The meaning of this can be arbitrary; did we receive OK status? Did
          the node get created? Were we authenticated?
  
          :rtype: ``bool``
          :return: ``True`` or ``False``
          """
          return self.status in [httplib.OK, httplib.CREATED, httplib.NO_CONTENT]
  
  
  class OnAppConnection(ConnectionUserAndKey):
      """
      OnApp connection class
      """
  
      responseCls = OnAppResponse
  
      def add_default_headers(self, headers):
          """
          Add Basic Authentication header to all the requests.
          It injects the "Authorization: Basic Base64String===" header
          in each request
          :type  headers: ``dict``
          :param headers: Default input headers
          :rtype:         ``dict``
          :return:        Default input headers with the "Authorization"
                          header
          """
          b64string = b("%s:%s" % (self.user_id, self.key))
          encoded = b64encode(b64string).decode("utf-8")
  
          headers["Authorization"] = "Basic " + encoded
          return headers
  