package redis import ( "fmt" "strconv" ) //------------------------------------------------------------------------------ type Limit struct { Offset, Count int64 } func NewLimit(offset, count int64) *Limit { return &Limit{offset, count} } //------------------------------------------------------------------------------ func (c *Client) Auth(password string) *StatusReq { req := NewStatusReq("AUTH", password) c.Process(req) return req } func (c *Client) Echo(message string) *BulkReq { req := NewBulkReq("ECHO", message) c.Process(req) return req } func (c *Client) Ping() *StatusReq { req := NewStatusReq("PING") c.Process(req) return req } func (c *Client) Select(index int64) *StatusReq { req := NewStatusReq("SELECT", strconv.FormatInt(index, 10)) c.Process(req) return req } //------------------------------------------------------------------------------ func (c *Client) Flushall() *StatusReq { req := NewStatusReq("FLUSHALL") c.Process(req) return req } func (c *Client) Flushdb() *StatusReq { req := NewStatusReq("FLUSHDB") c.Process(req) return req } //------------------------------------------------------------------------------ func (c *Client) Del(keys ...string) *IntReq { args := append([]string{"DEL"}, keys...) req := NewIntReq(args...) c.Process(req) return req } func (c *Client) Dump(key string) *BulkReq { req := NewBulkReq("DUMP", key) c.Process(req) return req } func (c *Client) Exists(key string) *BoolReq { req := NewBoolReq("EXISTS", key) c.Process(req) return req } func (c *Client) Expire(key string, seconds int64) *BoolReq { req := NewBoolReq("EXPIRE", key, strconv.FormatInt(seconds, 10)) c.Process(req) return req } func (c *Client) ExpireAt(key string, timestamp int64) *BoolReq { req := NewBoolReq("EXPIREAT", key, strconv.FormatInt(timestamp, 10)) c.Process(req) return req } func (c *Client) Keys(pattern string) *MultiBulkReq { req := NewMultiBulkReq("KEYS", pattern) c.Process(req) return req } func (c *Client) Migrate(host string, port int32, key, db string, timeout int64) *StatusReq { req := NewStatusReq( "MIGRATE", host, strconv.FormatInt(int64(port), 10), key, db, strconv.FormatInt(timeout, 10), ) c.Process(req) return req } func (c *Client) Move(key string, db int64) *BoolReq { req := NewBoolReq("MOVE", key, strconv.FormatInt(db, 10)) c.Process(req) return req } func (c *Client) ObjectRefCount(keys ...string) *IntReq { args := append([]string{"OBJECT", "REFCOUNT"}, keys...) req := NewIntReq(args...) c.Process(req) return req } func (c *Client) ObjectEncoding(keys ...string) *BulkReq { args := append([]string{"OBJECT", "ENCODING"}, keys...) req := NewBulkReq(args...) c.Process(req) return req } func (c *Client) ObjectIdleTime(keys ...string) *IntReq { args := append([]string{"OBJECT", "IDLETIME"}, keys...) req := NewIntReq(args...) c.Process(req) return req } func (c *Client) Persist(key string) *BoolReq { req := NewBoolReq("PERSIST", key) c.Process(req) return req } func (c *Client) PExpire(key string, milliseconds int64) *BoolReq { req := NewBoolReq("PEXPIRE", key, strconv.FormatInt(milliseconds, 10)) c.Process(req) return req } func (c *Client) PExpireAt(key string, milliseconds int64) *BoolReq { req := NewBoolReq("PEXPIREAT", key, strconv.FormatInt(milliseconds, 10)) c.Process(req) return req } func (c *Client) PTTL(key string) *IntReq { req := NewIntReq("PTTL", key) c.Process(req) return req } func (c *Client) RandomKey() *BulkReq { req := NewBulkReq("RANDOMKEY") c.Process(req) return req } func (c *Client) Rename(key, newkey string) *StatusReq { req := NewStatusReq("RENAME", key, newkey) c.Process(req) return req } func (c *Client) RenameNX(key, newkey string) *BoolReq { req := NewBoolReq("RENAMENX", key, newkey) c.Process(req) return req } func (c *Client) Restore(key, ttl int64, value string) *StatusReq { req := NewStatusReq( "RESTORE", strconv.FormatInt(ttl, 10), value, ) c.Process(req) return req } func (c *Client) Sort(key string, params ...string) *MultiBulkReq { args := append([]string{"SORT", key}, params...) req := NewMultiBulkReq(args...) c.Process(req) return req } func (c *Client) TTL(key string) *IntReq { req := NewIntReq("TTL", key) c.Process(req) return req } func (c *Client) Type(key string) *StatusReq { req := NewStatusReq("TYPE", key) c.Process(req) return req } //------------------------------------------------------------------------------ func (c *Client) Append(key, value string) *IntReq { req := NewIntReq("APPEND", key, value) c.Process(req) return req } // BitCount // BitOp func (c *Client) Decr(key string) *IntReq { req := NewIntReq("DECR", key) c.Process(req) return req } func (c *Client) DecrBy(key string, decrement int64) *IntReq { req := NewIntReq("DECRBY", key, strconv.FormatInt(decrement, 10)) c.Process(req) return req } func (c *Client) Get(key string) *BulkReq { req := NewBulkReq("GET", key) c.Process(req) return req } func (c *Client) GetBit(key string, offset int64) *IntReq { req := NewIntReq("GETBIT", key, strconv.FormatInt(offset, 10)) c.Process(req) return req } func (c *Client) GetRange(key string, start, end int64) *BulkReq { req := NewBulkReq( "GETRANGE", key, strconv.FormatInt(start, 10), strconv.FormatInt(end, 10), ) c.Process(req) return req } func (c *Client) GetSet(key, value string) *BulkReq { req := NewBulkReq("GETSET", key, value) c.Process(req) return req } func (c *Client) Incr(key string) *IntReq { req := NewIntReq("INCR", key) c.Process(req) return req } func (c *Client) IncrBy(key string, value int64) *IntReq { req := NewIntReq("INCRBY", key, strconv.FormatInt(value, 10)) c.Process(req) return req } // incrbyfloat func (c *Client) MGet(keys ...string) *MultiBulkReq { args := append([]string{"MGET"}, keys...) req := NewMultiBulkReq(args...) c.Process(req) return req } func (c *Client) MSet(pairs ...string) *StatusReq { args := append([]string{"MSET"}, pairs...) req := NewStatusReq(args...) c.Process(req) return req } func (c *Client) MSetNX(pairs ...string) *BoolReq { args := append([]string{"MSETNX"}, pairs...) req := NewBoolReq(args...) c.Process(req) return req } func (c *Client) PSetEx(key string, milliseconds int64, value string) *StatusReq { req := NewStatusReq( "PSETEX", key, strconv.FormatInt(milliseconds, 10), value, ) c.Process(req) return req } func (c *Client) Set(key, value string) *StatusReq { req := NewStatusReq("SET", key, value) c.Process(req) return req } func (c *Client) SetBit(key string, offset int64, value int) *IntReq { req := NewIntReq( "SETBIT", key, strconv.FormatInt(offset, 10), strconv.FormatInt(int64(value), 10), ) c.Process(req) return req } func (c *Client) SetEx(key string, seconds int64, value string) *StatusReq { req := NewStatusReq("SETEX", key, strconv.FormatInt(seconds, 10), value) c.Process(req) return req } func (c *Client) SetNX(key, value string) *BoolReq { req := NewBoolReq("SETNX", key, value) c.Process(req) return req } func (c *Client) SetRange(key string, offset int64, value string) *IntReq { req := NewIntReq("SETRANGE", key, strconv.FormatInt(offset, 10), value) c.Process(req) return req } func (c *Client) StrLen(key string) *IntReq { req := NewIntReq("STRLEN", key) c.Process(req) return req } //------------------------------------------------------------------------------ func (c *Client) HDel(key string, fields ...string) *IntReq { args := append([]string{"HDEL", key}, fields...) req := NewIntReq(args...) c.Process(req) return req } func (c *Client) HExists(key, field string) *BoolReq { req := NewBoolReq("HEXISTS", key, field) c.Process(req) return req } func (c *Client) HGet(key, field string) *BulkReq { req := NewBulkReq("HGET", key, field) c.Process(req) return req } func (c *Client) HGetAll(key string) *MultiBulkReq { req := NewMultiBulkReq("HGETALL", key) c.Process(req) return req } func (c *Client) HIncrBy(key, field string, incr int64) *IntReq { req := NewIntReq("HINCRBY", key, field, strconv.FormatInt(incr, 10)) c.Process(req) return req } // hincrbyfloat func (c *Client) HKeys(key string) *MultiBulkReq { req := NewMultiBulkReq("HKEYS", key) c.Process(req) return req } func (c *Client) HLen(key string) *IntReq { req := NewIntReq("HLEN", key) c.Process(req) return req } func (c *Client) HMGet(key string, fields ...string) *MultiBulkReq { args := append([]string{"HMGET", key}, fields...) req := NewMultiBulkReq(args...) c.Process(req) return req } func (c *Client) HMSet(key, field, value string, pairs ...string) *StatusReq { args := append([]string{"HMSET", key, field, value}, pairs...) req := NewStatusReq(args...) c.Process(req) return req } func (c *Client) HSet(key, field, value string) *BoolReq { req := NewBoolReq("HSET", key, field, value) c.Process(req) return req } func (c *Client) HSetNX(key, field, value string) *BoolReq { req := NewBoolReq("HSETNX", key, field, value) c.Process(req) return req } func (c *Client) HVals(key string) *MultiBulkReq { req := NewMultiBulkReq("HVALS", key) c.Process(req) return req } //------------------------------------------------------------------------------ func (c *Client) BLPop(timeout int64, keys ...string) *MultiBulkReq { args := append([]string{"BLPOP"}, keys...) args = append(args, strconv.FormatInt(timeout, 10)) req := NewMultiBulkReq(args...) c.Process(req) return req } func (c *Client) BRPop(timeout int64, keys ...string) *MultiBulkReq { args := append([]string{"BRPOP"}, keys...) args = append(args, strconv.FormatInt(timeout, 10)) req := NewMultiBulkReq(args...) c.Process(req) return req } func (c *Client) BRPopLPush(source, destination string, timeout int64) *BulkReq { req := NewBulkReq( "BRPOPLPUSH", source, destination, strconv.FormatInt(timeout, 10), ) c.Process(req) return req } func (c *Client) LIndex(key string, index int64) *BulkReq { req := NewBulkReq("LINDEX", key, strconv.FormatInt(index, 10)) c.Process(req) return req } func (c *Client) LInsert(key, op, pivot, value string) *IntReq { req := NewIntReq("LINSERT", key, op, pivot, value) c.Process(req) return req } func (c *Client) LLen(key string) *IntReq { req := NewIntReq("LLEN", key) c.Process(req) return req } func (c *Client) LPop(key string) *BulkReq { req := NewBulkReq("LPOP", key) c.Process(req) return req } func (c *Client) LPush(key string, values ...string) *IntReq { args := append([]string{"LPUSH", key}, values...) req := NewIntReq(args...) c.Process(req) return req } func (c *Client) LPushX(key, value string) *IntReq { req := NewIntReq("LPUSHX", key, value) c.Process(req) return req } func (c *Client) LRange(key string, start, stop int64) *MultiBulkReq { req := NewMultiBulkReq( "LRANGE", key, strconv.FormatInt(start, 10), strconv.FormatInt(stop, 10), ) c.Process(req) return req } func (c *Client) LRem(key string, count int64, value string) *IntReq { req := NewIntReq("LREM", key, strconv.FormatInt(count, 10), value) c.Process(req) return req } func (c *Client) LSet(key string, index int64, value string) *StatusReq { req := NewStatusReq("LSET", key, strconv.FormatInt(index, 10), value) c.Process(req) return req } func (c *Client) LTrim(key string, start, stop int64) *StatusReq { req := NewStatusReq( "LTRIM", key, strconv.FormatInt(start, 10), strconv.FormatInt(stop, 10), ) c.Process(req) return req } func (c *Client) RPop(key string) *BulkReq { req := NewBulkReq("RPOP", key) c.Process(req) return req } func (c *Client) RPopLPush(source, destination string) *BulkReq { req := NewBulkReq("RPOPLPUSH", source, destination) c.Process(req) return req } func (c *Client) RPush(key string, values ...string) *IntReq { args := append([]string{"RPUSH", key}, values...) req := NewIntReq(args...) c.Process(req) return req } func (c *Client) RPushX(key string, value string) *IntReq { req := NewIntReq("RPUSHX", key, value) c.Process(req) return req } //------------------------------------------------------------------------------ func (c *Client) SAdd(key string, members ...string) *IntReq { args := append([]string{"SADD", key}, members...) req := NewIntReq(args...) c.Process(req) return req } func (c *Client) SCard(key string) *IntReq { req := NewIntReq("SCARD", key) c.Process(req) return req } func (c *Client) SDiff(keys ...string) *MultiBulkReq { args := append([]string{"SDIFF"}, keys...) req := NewMultiBulkReq(args...) c.Process(req) return req } func (c *Client) SDiffStore(destination string, keys ...string) *IntReq { args := append([]string{"SDIFFSTORE", destination}, keys...) req := NewIntReq(args...) c.Process(req) return req } func (c *Client) SInter(keys ...string) *MultiBulkReq { args := append([]string{"SINTER"}, keys...) req := NewMultiBulkReq(args...) c.Process(req) return req } func (c *Client) SInterStore(destination string, keys ...string) *IntReq { args := append([]string{"SINTERSTORE", destination}, keys...) req := NewIntReq(args...) c.Process(req) return req } func (c *Client) SIsMember(key, member string) *BoolReq { req := NewBoolReq("SISMEMBER", key, member) c.Process(req) return req } func (c *Client) SMembers(key string) *MultiBulkReq { req := NewMultiBulkReq("SMEMBERS", key) c.Process(req) return req } func (c *Client) SMove(source, destination, member string) *BoolReq { req := NewBoolReq("SMOVE", source, destination, member) c.Process(req) return req } func (c *Client) SPop(key string) *BulkReq { req := NewBulkReq("SPOP", key) c.Process(req) return req } func (c *Client) SRandMember(key string) *BulkReq { req := NewBulkReq("SRANDMEMBER", key) c.Process(req) return req } func (c *Client) SRem(key string, members ...string) *IntReq { args := append([]string{"SREM", key}, members...) req := NewIntReq(args...) c.Process(req) return req } func (c *Client) SUnion(keys ...string) *MultiBulkReq { args := append([]string{"SUNION"}, keys...) req := NewMultiBulkReq(args...) c.Process(req) return req } func (c *Client) SUnionStore(destination string, keys ...string) *IntReq { args := append([]string{"SUNIONSTORE", destination}, keys...) req := NewIntReq(args...) c.Process(req) return req } //------------------------------------------------------------------------------ type ZMember struct { Score float64 Member string } func NewZMember(score float64, member string) *ZMember { return &ZMember{score, member} } func (m *ZMember) ScoreString() string { return strconv.FormatFloat(m.Score, 'f', -1, 32) } func (c *Client) ZAdd(key string, members ...*ZMember) *IntReq { args := []string{"ZADD", key} for _, m := range members { args = append(args, m.ScoreString(), m.Member) } req := NewIntReq(args...) c.Process(req) return req } func (c *Client) ZCard(key string) *IntReq { req := NewIntReq("ZCARD", key) c.Process(req) return req } func (c *Client) ZCount(key, min, max string) *IntReq { req := NewIntReq("ZCOUNT", key, min, max) c.Process(req) return req } func (c *Client) ZIncrBy(key string, increment int64, member string) *FloatReq { req := NewFloatReq("ZINCRBY", key, strconv.FormatInt(increment, 10), member) c.Process(req) return req } func (c *Client) ZInterStore( destination string, numkeys int64, keys []string, weights []int64, aggregate string, ) *IntReq { args := []string{"ZINTERSTORE", destination, strconv.FormatInt(numkeys, 10)} args = append(args, keys...) if weights != nil { args = append(args, "WEIGHTS") for _, w := range weights { args = append(args, strconv.FormatInt(w, 10)) } } if aggregate != "" { args = append(args, "AGGREGATE", aggregate) } req := NewIntReq(args...) c.Process(req) return req } func (c *Client) ZRange(key string, start, stop int64, withScores bool) *MultiBulkReq { args := []string{ "ZRANGE", key, strconv.FormatInt(start, 10), strconv.FormatInt(stop, 10), } if withScores { args = append(args, "WITHSCORES") } req := NewMultiBulkReq(args...) c.Process(req) return req } func (c *Client) ZRangeByScore( key string, min, max string, withScores bool, limit *Limit, ) *MultiBulkReq { args := []string{"ZRANGEBYSCORE", key, min, max} if withScores { args = append(args, "WITHSCORES") } if limit != nil { args = append( args, "LIMIT", strconv.FormatInt(limit.Offset, 10), strconv.FormatInt(limit.Count, 10), ) } req := NewMultiBulkReq(args...) c.Process(req) return req } func (c *Client) ZRank(key, member string) *IntNilReq { req := NewIntNilReq("ZRANK", key, member) c.Process(req) return req } func (c *Client) ZRem(key string, members ...string) *IntReq { args := append([]string{"ZREM", key}, members...) req := NewIntReq(args...) c.Process(req) return req } func (c *Client) ZRemRangeByRank(key string, start, stop int64) *IntReq { req := NewIntReq( "ZREMRANGEBYRANK", key, strconv.FormatInt(start, 10), strconv.FormatInt(stop, 10), ) c.Process(req) return req } func (c *Client) ZRemRangeByScore(key, min, max string) *IntReq { req := NewIntReq("ZREMRANGEBYSCORE", key, min, max) c.Process(req) return req } func (c *Client) ZRevRange(key, start, stop string, withScores bool) *MultiBulkReq { args := []string{"ZREVRANGE", key, start, stop} if withScores { args = append(args, "WITHSCORES") } req := NewMultiBulkReq(args...) c.Process(req) return req } func (c *Client) ZRevRangeByScore( key, start, stop string, withScores bool, limit *Limit, ) *MultiBulkReq { args := []string{"ZREVRANGEBYSCORE", key, start, stop} if withScores { args = append(args, "WITHSCORES") } if limit != nil { args = append( args, "LIMIT", strconv.FormatInt(limit.Offset, 10), strconv.FormatInt(limit.Count, 10), ) } req := NewMultiBulkReq(args...) c.Process(req) return req } func (c *Client) ZRevRank(key, member string) *IntNilReq { req := NewIntNilReq("ZREVRANK", key, member) c.Process(req) return req } func (c *Client) ZScore(key, member string) *FloatReq { req := NewFloatReq("ZSCORE", key, member) c.Process(req) return req } func (c *Client) ZUnionStore( destination string, numkeys int64, keys []string, weights []int64, aggregate string, ) *IntReq { args := []string{"ZUNIONSTORE", destination, strconv.FormatInt(numkeys, 10)} args = append(args, keys...) if weights != nil { args = append(args, "WEIGHTS") for _, w := range weights { args = append(args, strconv.FormatInt(w, 10)) } } if aggregate != "" { args = append(args, "AGGREGATE", aggregate) } req := NewIntReq(args...) c.Process(req) return req } //------------------------------------------------------------------------------ func (c *Client) PubSubClient() (*PubSubClient, error) { return newPubSubClient(c) } func (c *Client) Publish(channel, message string) *IntReq { req := NewIntReq("PUBLISH", channel, message) c.Process(req) return req } //------------------------------------------------------------------------------ func (c *Client) PipelineClient() (*Client, error) { return &Client{ ConnPool: c.ConnPool, InitConn: c.InitConn, reqs: make([]Req, 0), }, nil } //------------------------------------------------------------------------------ func (c *Client) MultiClient() (*Client, error) { return &Client{ ConnPool: NewSingleConnPool(c.ConnPool), InitConn: c.InitConn, }, nil } func (c *Client) Multi() { c.reqs = make([]Req, 0) } func (c *Client) Watch(keys ...string) *StatusReq { args := append([]string{"WATCH"}, keys...) req := NewStatusReq(args...) c.Process(req) return req } func (c *Client) Unwatch(keys ...string) *StatusReq { args := append([]string{"UNWATCH"}, keys...) req := NewStatusReq(args...) c.Process(req) return req } func (c *Client) Discard() { c.mtx.Lock() c.reqs = c.reqs[:0] c.mtx.Unlock() } func (c *Client) Exec() ([]Req, error) { c.mtx.Lock() if len(c.reqs) == 0 { c.mtx.Unlock() return c.reqs, nil } reqs := c.reqs c.reqs = nil c.mtx.Unlock() conn, err := c.conn() if err != nil { return nil, err } err = c.ExecReqs(reqs, conn) if err != nil { c.ConnPool.Remove(conn) return nil, err } c.ConnPool.Add(conn) return reqs, nil } func (c *Client) ExecReqs(reqs []Req, conn *Conn) error { multiReq := make([]byte, 0, 1024) multiReq = append(multiReq, PackReq([]string{"MULTI"})...) for _, req := range reqs { multiReq = append(multiReq, req.Req()...) } multiReq = append(multiReq, PackReq([]string{"EXEC"})...) err := c.WriteReq(multiReq, conn) if err != nil { return err } statusReq := NewStatusReq() // Parse MULTI command reply. _, err = statusReq.ParseReply(conn.Rd) if err != nil { return err } // Parse queued replies. for _ = range reqs { _, err = statusReq.ParseReply(conn.Rd) if err != nil { return err } } // Parse number of replies. line, err := readLine(conn.Rd) if err != nil { return err } if line[0] != '*' { return fmt.Errorf("Expected '*', but got line %q", line) } if isNilReplies(line) { return Nil } // Parse replies. for i := 0; i < len(reqs); i++ { req := reqs[i] val, err := req.ParseReply(conn.Rd) if err != nil { req.SetErr(err) } else { req.SetVal(val) } } return nil }