def getCliInstance():
	global _dbcli
	if not _dbcli:
		_dbcli = DatabaseHelper()
	return _dbcli
def limitStrLessThen128Char(self, strStr=None):
        if len(strStr) > 128:
            logging.info("limit str less then 128 char")
            return strStr[:127] + u"_"
        else:
            return strStr