import redis


class DbRedis:

    __connection = None
    __douyin_connection = None

    @staticmethod
    def connect():
        if DbRedis.__connection is None:
            host = 'r-2ze28bdb7389a8a4614.redis.rds.aliyuncs.com'
            port = 6379
            password = 'Zhuaduoduo2017'

            DbRedis.__connection = redis.StrictRedis(
                host=host,
                port=port,
                password=password,
                decode_responses=True
            )

        return DbRedis.__connection

    @staticmethod
    def douyin_connect():
        if DbRedis.__douyin_connection is None:
            host = 'r-2ze28bdb7389a8a4.redis.rds.aliyuncs.com'
            port = 6379
            password = 'Zhuaduoduo2017'

            DbRedis.__douyin_connection = redis.StrictRedis(
                host=host,
                port=port,
                password=password,
                decode_responses=True
            )

        return DbRedis.__douyin_connection

    @staticmethod
    def outer_net_connect():
        if DbRedis.__connection is None:
            host = 'r-2ze28bdb7389a8a4pd.redis.rds.aliyuncs.com'
            port = 6379
            password = 'Zhuaduoduo2017'

            DbRedis.__connection = redis.StrictRedis(
                host=host,
                port=port,
                password=password,
                decode_responses=True
            )

        return DbRedis.__connection