import json

  import logging

  from flask import Flask, request, Response

  import os

  # setup logger

  if not app.config["DEBUG"] or app.config["DEBUG_WITH_LOG"]:

      filename = os.path.join(app.config["LOG_DIR"], "main.log")

      if os.path.exists(app.config["LOG_DIR"]):

          handler.setLevel(app.config["LOG_LEVEL"])

          handler.setFormatter(logging.Formatter(

              '%(asctime)s %(levelname)s'

              ': %(message)s '

          ))

  # end setup logger

  from .logic import create_new_key, user_exists, get_passphrase_location

  @app.route('/ping')

  def ping():

      :status 200: server alive

      """

      return Response("pong\n", content_type="text/plain;charset=UTF-8")

      except Exception as e:

          raise BadRequestException("Failed to parse request body: {}".format(e))

      if "name_real" not in query:

          raise BadRequestException("Request query missing required "

                                    "parameter `name_real`".format(query))

  @app.errorhandler(500)

  @app.errorhandler(KeygenServiceBaseException)

  def handle_invalid_usage(error):

      response = Response(error.msg, content_type="text/plain;charset=UTF-8")