code: def parse_json(json_file):
      
      if not os.path.exists(json_file):
          return None
  
      try:
          with open(json_file, "r") as f:
              info_str = f.readlines()
              info_str = "".join(info_str)
              json_info = json.loads(info_str)
              return unicode2str(json_info)
      except BaseException as e:
          logging.error(e.message)
          return None
docs: Parse a whole json record from the given file.
  
      Return None if the json file does not exists or exception occurs.
  
      Args:
          json_file (str): File path to be parsed.
  
      Returns:
          A dict of json info.