Golang redis.Values函數代碼示例

func TestHashMget(t *testing.T) {
	s, err := Run()
	ok(t, err)
	defer s.Close()
	c, err := redis.Dial("tcp", s.Addr())
	ok(t, err)

	s.HSet("wim", "zus", "jet")
	s.HSet("wim", "teun", "vuur")
	s.HSet("wim", "gijs", "lam")
	s.HSet("wim", "kees", "bok")
	v, err := redis.Values(c.Do("HMGET", "wim", "zus", "nosuch", "kees"))
	ok(t, err)
	equals(t, 3, len(v))
	equals(t, "jet", string(v[0].([]byte)))
	equals(t, nil, v[1])
	equals(t, "bok", string(v[2].([]byte)))

	v, err = redis.Values(c.Do("HMGET", "nosuch", "zus", "kees"))
	ok(t, err)
	equals(t, 2, len(v))
	equals(t, nil, v[0])
	equals(t, nil, v[1])

	// Wrong key type
	s.Set("foo", "bar")
	_, err = redis.Int(c.Do("HMGET", "foo", "bar"))
	assert(t, err != nil, "no HMGET error")
}

func (c *client) QPeek(queueName string, count int) ([]job, error) {
	conn, err := c.get()
	if err != nil {
		return nil, err
	}

	reply, err := redis.Values(conn.Do("QPEEK", queueName, count))
	if err != nil {
		return nil, err
	}

	result := make([]job, 0, len(reply))
	for _, v := range reply {
		if value, err := redis.Values(v, nil); err != nil {
			return nil, err
		} else {
			queueName, err := redis.String(value[0], nil)
			id, err := redis.String(value[1], err)
			data, err := redis.Bytes(value[2], err)
			if err != nil {
				return nil, err
			}
			result = append(result, job{QueueName: queueName, Id: id, Body: data})
		}
	}
	return result, nil
}

func (mapDec *mapDecoder) decode(node RMNode, data interface{}, v reflect.Value) {
	values, err := redis.Values(node.Value(), nil)
	if err != nil {
		panic(err)
	}

	size := len(values) / 2
	vals, err := redis.Values(node.Value(), nil)
	if err != nil {
		panic(err)
	}
	v.Set(reflect.MakeMap(v.Type()))

	for i := 0; i < size; i++ {
		mKey, err := redis.String(values[i*2], nil)
		if err != nil {
			panic(err)
		}
		elemV := newValueForType(v.Type().Elem())
		if i < node.Size() {
			mapDec.elemFunc(node.Child(i), vals[i*2+1], elemV)
		} else {
			mapDec.elemFunc(node, vals[i*2+1], elemV)
		}
		v.SetMapIndex(reflect.ValueOf(mKey), elemV)
	}
}

func SlotsInfo(addr, passwd string, fromSlot, toSlot int) (map[int]int, error) {
	c, err := DialTo(addr, passwd)
	if err != nil {
		return nil, err
	}
	defer c.Close()

	infos, err := redis.Values(c.Do("SLOTSINFO", fromSlot, toSlot-fromSlot+1))
	if err != nil {
		return nil, errors.Trace(err)
	}

	slots := make(map[int]int)
	if infos != nil {
		for i := 0; i < len(infos); i++ {
			info, err := redis.Values(infos[i], nil)
			if err != nil {
				return nil, errors.Trace(err)
			}
			var slotid, slotsize int
			if _, err := redis.Scan(info, &slotid, &slotsize); err != nil {
				return nil, errors.Trace(err)
			} else {
				slots[slotid] = slotsize
			}
		}
	}
	return slots, nil
}

func TestMget(t *testing.T) {
	s, err := Run()
	ok(t, err)
	defer s.Close()
	c, err := redis.Dial("tcp", s.Addr())
	ok(t, err)

	s.Set("zus", "jet")
	s.Set("teun", "vuur")
	s.Set("gijs", "lam")
	s.Set("kees", "bok")
	{
		v, err := redis.Values(c.Do("MGET", "zus", "nosuch", "kees"))
		ok(t, err)
		equals(t, 3, len(v))
		equals(t, "jet", string(v[0].([]byte)))
		equals(t, nil, v[1])
		equals(t, "bok", string(v[2].([]byte)))
	}

	// Wrong key type returns nil
	{
		s.HSet("aap", "foo", "bar")
		v, err := redis.Values(c.Do("MGET", "aap"))
		ok(t, err)
		equals(t, 1, len(v))
		equals(t, nil, v[0])
	}
}

// offset From where to scan.
// prefix The prefix string to scan.
//
// Return: (offset, keys, error), if the offset is 0, means the scan is over.
func ListKeys(offset int64, prefix *string) (int64, []string, error) {
	if prefix == nil {
		return 0, nil, errors.New("Prefix can't be nil.")
	}

	conn, err := getConn()
	if err != nil {
		return 0, nil, err
	}
	defer (*conn).Close()

	var v []interface{}
	v, err = redis.Values((*conn).Do("SCAN", offset, *prefix))
	if err != nil {
		return 0, nil, err
	}

	var newOffset int64
	newOffsetS := string(v[0].([]byte))
	newOffset, err = strconv.ParseInt(newOffsetS, 10, 64)
	if err != nil {
		return 0, nil, err
	}

	keys := make([]string, 0)
	sv, _ := redis.Values(v[1], nil)
	for _, value := range sv {
		key := string(value.([]byte))
		keys = append(keys, key)
	}

	return newOffset, keys, nil
}

func (r *RedisCache) ZRangeByScore(v interface{}, set string, dir bool, limit int64) ([]int64, error) {

	var values []interface{}
	var err error
	t := GetBaseType(v)
	// Using LIMIT offset for pagination has bad performance
	//  so always use 0 offset and implement elsewhere
	if dir == HIGH_TO_LOW {
		values, err = redis.Values(r.C.Do(
			"ZREVRANGEBYSCORE",
			"set"+r.Sep+r.GetTypePrefix(t)+r.Sep+set,
			"+inf",
			"-inf",
			"WITHSCORES",
			"LIMIT",
			"0",
			strconv.FormatInt(limit, 10)))
	} else {
		// LOW_TO_HIGH
		values, err = redis.Values(r.C.Do(
			"ZRANGEBYSCORE",
			"set"+r.Sep+r.GetTypePrefix(t)+r.Sep+set,
			"-inf",
			"+inf",
			"WITHSCORES",
			"LIMIT",
			"0",
			strconv.FormatInt(limit, 10)))
	}

	if err != nil {
		return nil, err
	}

	val := reflect.ValueOf(v)
	switch val.Kind() {
	case reflect.Ptr:
		val = reflect.Indirect(val)
	}

	reply_len := len(values) / 2
	list := reflect.MakeSlice(val.Type(), reply_len, reply_len)
	scores := make([]int64, reply_len)

	for i := 0; i < reply_len; i++ {
		scores[i], err = redis.Int64(values[(i*2)+1], nil)
		if err != nil {
			return nil, err
		}
		b, err := redis.Bytes(values[i*2], nil)
		if err != nil {
			return nil, err
		}
		r.S.Unmarshal(b, list.Index(i).Addr().Interface())
	}
	val.Set(list)
	return scores, nil
}

func SendOfflineMsg(client *Client, appid string) {
	// connect to Redis
	redisConn, err := redis.Dial("tcp", ":6379")
	if err != nil {
		log.Printf("Dial redix error: %s", err.Error())
		return
	}

	// get the timestamp
	var reply []interface{}
	reply, err = redis.Values(redisConn.Do("TIME"))
	if err != nil {
		log.Printf("Error on TIME: %s", err.Error())
		return
	}
	var current_time int64
	_, err = redis.Scan(reply, &current_time)

	// get offline message for each App on this device
	key := "broadcast_msg:" + appid
	reply, err = redis.Values(redisConn.Do("ZRANGE", key, 0, -1))
	if err != nil {
		log.Printf("Error on ZRANGE: %s", err.Error())
		goto Out
	}
	for len(reply) > 0 {
		var msg_id int64
		reply, err = redis.Scan(reply, &msg_id)
		if err != nil {
			log.Printf("Error on Scan ZRANGE reply: %s", err.Error())
			goto Out
		}
		log.Printf("offline msg_id: %d", msg_id)
		key = "msg:" + strconv.FormatInt(msg_id, 10)
		var reply_msg []interface{}
		reply_msg, err = redis.Values(redisConn.Do("HMGET", key, "msg", "expire_time"))
		if err != nil {
			log.Printf("Error on HMGET: %s", err.Error())
			goto Out
		}
		var msg string
		var expire_time int64
		_, err = redis.Scan(reply_msg, &msg, &expire_time)
		if err != nil {
			log.Printf("Error on Scan HMGET reply: %s", err.Error())
			goto Out
		}
		//log.Printf("expire_time: %d, msg: %s", expire_time, msg)
		if expire_time > current_time {
			// message hasn't expired, need to send it
			client.SendMsg(msg, appid)
		}
	}

Out:
	redisConn.Close()
}

func main() {

	m := martini.Classic()

	// Handle the "/results" API method
	m.Get("/results/:check_id", func(params martini.Params, res http.ResponseWriter, req *http.Request) string {
		conn := redisPool.Get()

		// Parse the url to get the query paramenter named "limit" and convert to int
		limit, _ := strconv.ParseInt(req.URL.Query().Get("limit"), 10, 64)

		// Query redis for the last "limit" results for the given "check_id"
		reply, err := redis.Values(conn.Do("LRANGE", "results:"+params["check_id"], -limit, -1))
		for {
			if err == nil {
				break
			} else {
				log.Printf("Redis error in LRANGE results: %s\n", err)
				reply, err = redis.Values(conn.Do("LRANGE", "results:"+params["check_id"], -limit, -1))
			}
		}
		conn.Close()
		return string(getJsonResults(reply))
	})

	// Handle the "/checks" API method
	m.Get("/checks", func(params martini.Params) string {
		conn := redisPool.Get()

		// Query redis all the available "checks"
		reply, err := redis.Values(conn.Do("LRANGE", "checks", 0, -1))
		for {
			if err == nil {
				break
			} else {
				log.Printf("Redis error in LRANGE checks: %s\n", err)
				reply, err = redis.Values(conn.Do("LRANGE", "checks", 0, -1))
			}
		}
		conn.Close()
		return string(getJsonChecks(reply))
	})

	fmt.Printf("[martini] Listening on port 5000\n")
	err := http.ListenAndServe("0.0.0.0:5000", m)
	if err != nil {
		fmt.Printf("Error: %s", err)
	}
}

func LoadUserAccessToken(token string) (int64, int64, string, error) {
	conn := redis_pool.Get()
	defer conn.Close()

	key := fmt.Sprintf("access_token_%s", token)
	var uid int64
	var appid int64
	var uname string

	exists, err := redis.Bool(conn.Do("EXISTS", key))
	if err != nil {
		return 0, 0, "", err
	}
	if !exists {
		return 0, 0, "", errors.New("token non exists")
	}

	reply, err := redis.Values(conn.Do("HMGET", key, "user_id", "app_id", "user_name"))
	if err != nil {
		log.Info("hmget error:", err)
		return 0, 0, "", err
	}

	_, err = redis.Scan(reply, &uid, &appid, &uname)
	if err != nil {
		log.Warning("scan error:", err)
		return 0, 0, "", err
	}
	return appid, uid, uname, nil
}

func (oper *MultiOperator) mgetResults(mop *MulOp) ([]byte, error) {
	slotmap := getSlotMap(mop.keys)
	results := make([]interface{}, len(mop.keys))
	conn := oper.pool.Get()
	defer conn.Close()
	for _, vec := range slotmap {
		req := make([]interface{}, 0, len(vec))
		for _, p := range vec {
			req = append(req, p.key)
		}

		replys, err := redis.Values(conn.Do("mget", req...))
		if err != nil {
			return nil, errors.Trace(err)
		}

		for i, reply := range replys {
			if reply != nil {
				results[vec[i].pos] = reply
			} else {
				results[vec[i].pos] = nil
			}
		}
	}

	b, err := respcoding.Marshal(results)
	return b, errors.Trace(err)
}

func (r *RedisStorageManager) GetAndDeleteSet(keyName string) []interface{} {
	db := r.pool.Get()
	defer db.Close()

	log.Debug("Getting raw gkey set: ", keyName)
	if db == nil {
		log.Warning("Connection dropped, connecting..")
		r.Connect()
		r.GetAndDeleteSet(keyName)
	} else {
		log.Debug("keyName is: ", keyName)
		fixedKey := r.fixKey(keyName)
		log.Debug("Fixed keyname is: ", fixedKey)
		db.Send("MULTI")
		// Get all the elements
		db.Send("LRANGE", fixedKey, 0, -1)
		// Trim it to zero
		db.Send("DEL", fixedKey)
		// Execute
		r, err := redis.Values(db.Do("EXEC"))

		vals := r[0].([]interface{})

		log.Debug("Returned: ", vals)

		if err != nil {
			log.Error("Multi command failed: ", err)
		}

		return vals
	}
	return []interface{}{}
}

func TestBlankCommmand(t *testing.T) {
	c, err := redis.DialTestDB()
	if err != nil {
		t.Fatalf("error connection to database, %v", err)
	}
	defer c.Close()

	for _, cmd := range testCommands {
		if err := c.Send(cmd.args[0].(string), cmd.args[1:]...); err != nil {
			t.Fatalf("Send(%v) returned error %v", cmd.args, err)
		}
	}
	reply, err := redis.Values(c.Do(""))
	if err != nil {
		t.Fatalf("Do() returned error %v", err)
	}
	if len(reply) != len(testCommands) {
		t.Fatalf("len(reply)=%d, want %d", len(reply), len(testCommands))
	}
	for i, cmd := range testCommands {
		actual := reply[i]
		if !reflect.DeepEqual(actual, cmd.expected) {
			t.Errorf("Receive(%v) = %v, want %v", cmd.args, actual, cmd.expected)
		}
	}
}

func (iter *RedisIterator) Next() bool {
	iter.cursor += 1
	if len(iter.cacheJob) > 0 && len(iter.cacheJob) > iter.cursor {
		return true
	}
	start := iter.start
	stop := iter.start + iter.limit - 1
	iter.start = iter.start + iter.limit
	var err error

	var conn = iter.r.pool.Get()
	defer conn.Close()
	var key string
	if iter.Func == nil {
		key = REDIS_PREFIX + "ID"
	} else {
		key = REDIS_PREFIX + string(iter.Func) + ":name"
	}

	reply, err := redis.Values(conn.Do("ZRANGE", key, start, stop, "WITHSCORES"))
	if err != nil || len(reply) == 0 {
		return false
	}
	var jobId int64
	jobs := make([]driver.Job, len(reply)/2)
	for k, v := range reply {
		if k%2 == 1 {
			jobId, _ = strconv.ParseInt(string(v.([]byte)), 10, 0)
			jobs[(k-1)/2], _ = iter.r.get(jobId)
		}
	}
	iter.cacheJob = jobs
	iter.cursor = 0
	return true
}

func (self *SortedSetGenerator) checkZrange(conn redis.Conn, req_num int32, range_data int32, mytime *time.Timer) {

	var pos int32 = 0
	for ; pos < req_num; pos++ {
		select {
		case <-mytime.C:
			return
		default:
			value := self.data_list[pos%ZRANGE_ALL]
			reporter.Resultdata.AddSendQuantity()
			reply, err := redis.Values(conn.Do("ZRANGE", value.key, 0, range_data))
			//log.Info("redis operating:  zrange  %d  0  %d", value.key, range_data)
			if err != nil {
				log.Info("redis operating:  zrange %d  0  %d  error %v", value.key, range_data, err)
				reporter.Resultdata.AddFailQuantity()
			} else {
				//log.Info(" zrange %d 0 %d ret:%v", value.key, range_data, reply)
				/*type IntArrayChecker struct {
				myuid   []int64
									youruid []interface{}
													}*/
				datacheck := &reporter.IntArrayChecker{Myuid: value.sortedlist, Youruid: reply}
				reporter.Datasummer.AddChecker(datacheck)
			}
		}
	}
}