Check assert is OK #193

serialize = json.dumps(payload)
redis_client.expect('OCTO.ADD', 'exp:1', serialize).ok()

fn add(ctx: &Context, args: Vec<RedisString>) -> RedisResult {
    let mut args = args.into_iter().skip(1);
    let key_creative = args.next_arg()?;
    let payload = args.next_string()?;
    let creative_expression = match serde_json::from_str::<CreativeCondition>(payload.as_str()) {
        Ok(exp) => exp,
        Err(e) => {
            println!("fail deserialize `creative condition` object err: {}", e);
            return Err(RedisError::Str("fail deserialize `creative condition` object"));
        }
    };
    ctx.open_key_writable(&key_creative)
        .set_value(&CREATIVE_CONDITION, creative_expression)?;

    REDIS_OK
}