forked from mirror/ledisdb
805 lines
14 KiB
Go
805 lines
14 KiB
Go
package server
|
|
|
|
import (
|
|
"errors"
|
|
"math"
|
|
"strconv"
|
|
"strings"
|
|
|
|
"git.internal/re/ledisdb/ledis"
|
|
"git.internal/re/ledisdb/store"
|
|
"github.com/siddontang/go/hack"
|
|
"github.com/siddontang/go/num"
|
|
)
|
|
|
|
//for simple implementation, we only support int64 score
|
|
|
|
var errScoreOverflow = errors.New("zset score overflow")
|
|
|
|
func zaddCommand(c *client) error {
|
|
args := c.args
|
|
if len(args) < 3 {
|
|
return ErrCmdParams
|
|
}
|
|
|
|
key := args[0]
|
|
if len(args[1:])&1 != 0 {
|
|
return ErrCmdParams
|
|
}
|
|
|
|
args = args[1:]
|
|
|
|
params := make([]ledis.ScorePair, len(args)>>1)
|
|
for i := 0; i < len(params); i++ {
|
|
score, err := ledis.StrInt64(args[2*i], nil)
|
|
if err != nil {
|
|
return ErrValue
|
|
}
|
|
|
|
params[i].Score = score
|
|
params[i].Member = args[2*i+1]
|
|
}
|
|
|
|
n, err := c.db.ZAdd(key, params...)
|
|
|
|
if err == nil {
|
|
c.resp.writeInteger(n)
|
|
}
|
|
|
|
return err
|
|
}
|
|
|
|
func zcardCommand(c *client) error {
|
|
args := c.args
|
|
if len(args) != 1 {
|
|
return ErrCmdParams
|
|
}
|
|
|
|
n, err := c.db.ZCard(args[0])
|
|
if err != nil {
|
|
return err
|
|
}
|
|
c.resp.writeInteger(n)
|
|
return nil
|
|
}
|
|
|
|
func zscoreCommand(c *client) error {
|
|
args := c.args
|
|
if len(args) != 2 {
|
|
return ErrCmdParams
|
|
}
|
|
|
|
if s, err := c.db.ZScore(args[0], args[1]); err != nil {
|
|
if err == ledis.ErrScoreMiss {
|
|
c.resp.writeBulk(nil)
|
|
} else {
|
|
return err
|
|
}
|
|
} else {
|
|
c.resp.writeBulk(num.FormatInt64ToSlice(s))
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func zremCommand(c *client) error {
|
|
args := c.args
|
|
if len(args) < 2 {
|
|
return ErrCmdParams
|
|
}
|
|
|
|
n, err := c.db.ZRem(args[0], args[1:]...)
|
|
|
|
if err == nil {
|
|
c.resp.writeInteger(n)
|
|
}
|
|
|
|
return err
|
|
}
|
|
|
|
func zincrbyCommand(c *client) error {
|
|
args := c.args
|
|
if len(args) != 3 {
|
|
return ErrCmdParams
|
|
}
|
|
|
|
key := args[0]
|
|
|
|
delta, err := ledis.StrInt64(args[1], nil)
|
|
if err != nil {
|
|
return ErrValue
|
|
}
|
|
|
|
v, err := c.db.ZIncrBy(key, delta, args[2])
|
|
|
|
if err == nil {
|
|
c.resp.writeBulk(num.FormatInt64ToSlice(v))
|
|
}
|
|
|
|
return err
|
|
}
|
|
|
|
func zparseScoreRange(minBuf []byte, maxBuf []byte) (min int64, max int64, err error) {
|
|
if strings.ToLower(hack.String(minBuf)) == "-inf" {
|
|
min = math.MinInt64
|
|
} else {
|
|
|
|
if len(minBuf) == 0 {
|
|
err = ErrCmdParams
|
|
return
|
|
}
|
|
|
|
var lopen bool = false
|
|
if minBuf[0] == '(' {
|
|
lopen = true
|
|
minBuf = minBuf[1:]
|
|
}
|
|
|
|
min, err = ledis.StrInt64(minBuf, nil)
|
|
if err != nil {
|
|
err = ErrValue
|
|
return
|
|
}
|
|
|
|
if min <= ledis.MinScore || min >= ledis.MaxScore {
|
|
err = errScoreOverflow
|
|
return
|
|
}
|
|
|
|
if lopen {
|
|
min++
|
|
}
|
|
}
|
|
|
|
if strings.ToLower(hack.String(maxBuf)) == "+inf" {
|
|
max = math.MaxInt64
|
|
} else {
|
|
var ropen = false
|
|
|
|
if len(maxBuf) == 0 {
|
|
err = ErrCmdParams
|
|
return
|
|
}
|
|
if maxBuf[0] == '(' {
|
|
ropen = true
|
|
maxBuf = maxBuf[1:]
|
|
}
|
|
|
|
if maxBuf[0] == '(' {
|
|
ropen = true
|
|
maxBuf = maxBuf[1:]
|
|
}
|
|
|
|
max, err = ledis.StrInt64(maxBuf, nil)
|
|
if err != nil {
|
|
err = ErrValue
|
|
return
|
|
}
|
|
|
|
if max <= ledis.MinScore || max >= ledis.MaxScore {
|
|
err = errScoreOverflow
|
|
return
|
|
}
|
|
|
|
if ropen {
|
|
max--
|
|
}
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
func zcountCommand(c *client) error {
|
|
args := c.args
|
|
if len(args) != 3 {
|
|
return ErrCmdParams
|
|
}
|
|
|
|
min, max, err := zparseScoreRange(args[1], args[2])
|
|
if err != nil {
|
|
return ErrValue
|
|
}
|
|
|
|
if min > max {
|
|
c.resp.writeInteger(0)
|
|
return nil
|
|
}
|
|
|
|
n, err := c.db.ZCount(args[0], min, max)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
c.resp.writeInteger(n)
|
|
return nil
|
|
}
|
|
|
|
func zrankCommand(c *client) error {
|
|
args := c.args
|
|
if len(args) != 2 {
|
|
return ErrCmdParams
|
|
}
|
|
|
|
if n, err := c.db.ZRank(args[0], args[1]); err != nil {
|
|
return err
|
|
} else if n == -1 {
|
|
c.resp.writeBulk(nil)
|
|
} else {
|
|
c.resp.writeInteger(n)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func zrevrankCommand(c *client) error {
|
|
args := c.args
|
|
if len(args) != 2 {
|
|
return ErrCmdParams
|
|
}
|
|
|
|
if n, err := c.db.ZRevRank(args[0], args[1]); err != nil {
|
|
return err
|
|
} else if n == -1 {
|
|
c.resp.writeBulk(nil)
|
|
} else {
|
|
c.resp.writeInteger(n)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func zremrangebyrankCommand(c *client) error {
|
|
args := c.args
|
|
if len(args) != 3 {
|
|
return ErrCmdParams
|
|
}
|
|
|
|
key := args[0]
|
|
|
|
start, stop, err := zparseRange(c, args[1], args[2])
|
|
if err != nil {
|
|
return ErrValue
|
|
}
|
|
|
|
n, err := c.db.ZRemRangeByRank(key, start, stop)
|
|
if err == nil {
|
|
c.resp.writeInteger(n)
|
|
}
|
|
|
|
return err
|
|
}
|
|
|
|
func zremrangebyscoreCommand(c *client) error {
|
|
args := c.args
|
|
if len(args) != 3 {
|
|
return ErrCmdParams
|
|
}
|
|
|
|
key := args[0]
|
|
min, max, err := zparseScoreRange(args[1], args[2])
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
n, err := c.db.ZRemRangeByScore(key, min, max)
|
|
|
|
if err == nil {
|
|
c.resp.writeInteger(n)
|
|
}
|
|
|
|
return err
|
|
}
|
|
|
|
func zparseRange(c *client, a1 []byte, a2 []byte) (start int, stop int, err error) {
|
|
if start, err = strconv.Atoi(hack.String(a1)); err != nil {
|
|
return
|
|
}
|
|
|
|
if stop, err = strconv.Atoi(hack.String(a2)); err != nil {
|
|
return
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
func zrangeGeneric(c *client, reverse bool) error {
|
|
args := c.args
|
|
if len(args) < 3 {
|
|
return ErrCmdParams
|
|
}
|
|
|
|
key := args[0]
|
|
|
|
start, stop, err := zparseRange(c, args[1], args[2])
|
|
if err != nil {
|
|
return ErrValue
|
|
}
|
|
|
|
args = args[3:]
|
|
var withScores bool = false
|
|
|
|
if len(args) > 0 {
|
|
if len(args) != 1 {
|
|
return ErrCmdParams
|
|
}
|
|
if strings.ToLower(hack.String(args[0])) == "withscores" {
|
|
withScores = true
|
|
} else {
|
|
return ErrSyntax
|
|
}
|
|
}
|
|
|
|
datas, err := c.db.ZRangeGeneric(key, start, stop, reverse)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
c.resp.writeScorePairArray(datas, withScores)
|
|
return nil
|
|
}
|
|
|
|
func zrangeCommand(c *client) error {
|
|
return zrangeGeneric(c, false)
|
|
}
|
|
|
|
func zrevrangeCommand(c *client) error {
|
|
return zrangeGeneric(c, true)
|
|
}
|
|
|
|
func zrangebyscoreGeneric(c *client, reverse bool) error {
|
|
args := c.args
|
|
if len(args) < 3 {
|
|
return ErrCmdParams
|
|
}
|
|
|
|
key := args[0]
|
|
|
|
var minScore, maxScore []byte
|
|
|
|
if !reverse {
|
|
minScore, maxScore = args[1], args[2]
|
|
} else {
|
|
minScore, maxScore = args[2], args[1]
|
|
}
|
|
|
|
min, max, err := zparseScoreRange(minScore, maxScore)
|
|
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
args = args[3:]
|
|
|
|
var withScores bool = false
|
|
|
|
if len(args) > 0 {
|
|
if strings.ToLower(hack.String(args[0])) == "withscores" {
|
|
withScores = true
|
|
args = args[1:]
|
|
}
|
|
}
|
|
|
|
var offset int = 0
|
|
var count int = -1
|
|
|
|
if len(args) > 0 {
|
|
if len(args) != 3 {
|
|
return ErrCmdParams
|
|
}
|
|
|
|
if strings.ToLower(hack.String(args[0])) != "limit" {
|
|
return ErrSyntax
|
|
}
|
|
|
|
if offset, err = strconv.Atoi(hack.String(args[1])); err != nil {
|
|
return ErrValue
|
|
}
|
|
|
|
if count, err = strconv.Atoi(hack.String(args[2])); err != nil {
|
|
return ErrValue
|
|
}
|
|
}
|
|
|
|
if offset < 0 {
|
|
//for ledis, if offset < 0, a empty will return
|
|
//so here we directly return a empty array
|
|
c.resp.writeArray([]interface{}{})
|
|
return nil
|
|
}
|
|
|
|
datas, err := c.db.ZRangeByScoreGeneric(key, min, max, offset, count, reverse)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
c.resp.writeScorePairArray(datas, withScores)
|
|
return nil
|
|
}
|
|
|
|
func zrangebyscoreCommand(c *client) error {
|
|
return zrangebyscoreGeneric(c, false)
|
|
}
|
|
|
|
func zrevrangebyscoreCommand(c *client) error {
|
|
return zrangebyscoreGeneric(c, true)
|
|
}
|
|
|
|
func zclearCommand(c *client) error {
|
|
args := c.args
|
|
if len(args) != 1 {
|
|
return ErrCmdParams
|
|
}
|
|
|
|
n, err := c.db.ZClear(args[0])
|
|
|
|
if err == nil {
|
|
c.resp.writeInteger(n)
|
|
}
|
|
|
|
return err
|
|
}
|
|
|
|
func zmclearCommand(c *client) error {
|
|
args := c.args
|
|
if len(args) < 1 {
|
|
return ErrCmdParams
|
|
}
|
|
|
|
n, err := c.db.ZMclear(args...)
|
|
|
|
if err == nil {
|
|
c.resp.writeInteger(n)
|
|
}
|
|
|
|
return err
|
|
}
|
|
|
|
func zexpireCommand(c *client) error {
|
|
args := c.args
|
|
if len(args) != 2 {
|
|
return ErrCmdParams
|
|
}
|
|
|
|
duration, err := ledis.StrInt64(args[1], nil)
|
|
if err != nil {
|
|
return ErrValue
|
|
}
|
|
|
|
v, err := c.db.ZExpire(args[0], duration)
|
|
|
|
if err == nil {
|
|
c.resp.writeInteger(v)
|
|
}
|
|
|
|
return err
|
|
}
|
|
|
|
func zexpireAtCommand(c *client) error {
|
|
args := c.args
|
|
if len(args) != 2 {
|
|
return ErrCmdParams
|
|
}
|
|
|
|
when, err := ledis.StrInt64(args[1], nil)
|
|
if err != nil {
|
|
return ErrValue
|
|
}
|
|
|
|
v, err := c.db.ZExpireAt(args[0], when)
|
|
|
|
if err == nil {
|
|
c.resp.writeInteger(v)
|
|
}
|
|
|
|
return err
|
|
}
|
|
|
|
func zttlCommand(c *client) error {
|
|
args := c.args
|
|
if len(args) != 1 {
|
|
return ErrCmdParams
|
|
}
|
|
|
|
v, err := c.db.ZTTL(args[0])
|
|
if err != nil {
|
|
return err
|
|
}
|
|
c.resp.writeInteger(v)
|
|
return nil
|
|
}
|
|
|
|
func zpersistCommand(c *client) error {
|
|
args := c.args
|
|
if len(args) != 1 {
|
|
return ErrCmdParams
|
|
}
|
|
|
|
n, err := c.db.ZPersist(args[0])
|
|
|
|
if err == nil {
|
|
c.resp.writeInteger(n)
|
|
}
|
|
|
|
return err
|
|
}
|
|
|
|
func zparseZsetoptStore(args [][]byte) (destKey []byte, srcKeys [][]byte, weights []int64, aggregate byte, err error) {
|
|
destKey = args[0]
|
|
nKeys, err := strconv.Atoi(hack.String(args[1]))
|
|
if err != nil {
|
|
err = ErrValue
|
|
return
|
|
}
|
|
args = args[2:]
|
|
if len(args) < nKeys {
|
|
err = ErrSyntax
|
|
return
|
|
}
|
|
|
|
srcKeys = args[:nKeys]
|
|
|
|
args = args[nKeys:]
|
|
|
|
var weightsFlag = false
|
|
var aggregateFlag = false
|
|
|
|
for len(args) > 0 {
|
|
if strings.ToLower(hack.String(args[0])) == "weights" {
|
|
if weightsFlag {
|
|
err = ErrSyntax
|
|
return
|
|
}
|
|
|
|
args = args[1:]
|
|
if len(args) < nKeys {
|
|
err = ErrSyntax
|
|
return
|
|
}
|
|
|
|
weights = make([]int64, nKeys)
|
|
for i, arg := range args[:nKeys] {
|
|
if weights[i], err = ledis.StrInt64(arg, nil); err != nil {
|
|
err = ErrValue
|
|
return
|
|
}
|
|
}
|
|
args = args[nKeys:]
|
|
|
|
weightsFlag = true
|
|
|
|
} else if strings.ToLower(hack.String(args[0])) == "aggregate" {
|
|
if aggregateFlag {
|
|
err = ErrSyntax
|
|
return
|
|
}
|
|
if len(args) < 2 {
|
|
err = ErrSyntax
|
|
return
|
|
}
|
|
|
|
if strings.ToLower(hack.String(args[1])) == "sum" {
|
|
aggregate = ledis.AggregateSum
|
|
} else if strings.ToLower(hack.String(args[1])) == "min" {
|
|
aggregate = ledis.AggregateMin
|
|
} else if strings.ToLower(hack.String(args[1])) == "max" {
|
|
aggregate = ledis.AggregateMax
|
|
} else {
|
|
err = ErrSyntax
|
|
return
|
|
}
|
|
args = args[2:]
|
|
aggregateFlag = true
|
|
} else {
|
|
err = ErrSyntax
|
|
return
|
|
}
|
|
}
|
|
if !aggregateFlag {
|
|
aggregate = ledis.AggregateSum
|
|
}
|
|
return
|
|
}
|
|
|
|
func zunionstoreCommand(c *client) error {
|
|
args := c.args
|
|
if len(args) < 2 {
|
|
return ErrCmdParams
|
|
}
|
|
|
|
destKey, srcKeys, weights, aggregate, err := zparseZsetoptStore(args)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
n, err := c.db.ZUnionStore(destKey, srcKeys, weights, aggregate)
|
|
|
|
if err == nil {
|
|
c.resp.writeInteger(n)
|
|
}
|
|
|
|
return err
|
|
}
|
|
|
|
func zinterstoreCommand(c *client) error {
|
|
args := c.args
|
|
if len(args) < 2 {
|
|
return ErrCmdParams
|
|
}
|
|
|
|
destKey, srcKeys, weights, aggregate, err := zparseZsetoptStore(args)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
n, err := c.db.ZInterStore(destKey, srcKeys, weights, aggregate)
|
|
|
|
if err == nil {
|
|
c.resp.writeInteger(n)
|
|
}
|
|
|
|
return err
|
|
}
|
|
|
|
func zparseMemberRange(minBuf []byte, maxBuf []byte) (min []byte, max []byte, rangeType uint8, err error) {
|
|
rangeType = store.RangeClose
|
|
if strings.ToLower(hack.String(minBuf)) == "-" {
|
|
min = nil
|
|
} else {
|
|
if len(minBuf) == 0 {
|
|
err = ErrCmdParams
|
|
return
|
|
}
|
|
|
|
if minBuf[0] == '(' {
|
|
rangeType |= store.RangeLOpen
|
|
min = minBuf[1:]
|
|
} else if minBuf[0] == '[' {
|
|
min = minBuf[1:]
|
|
} else {
|
|
err = ErrCmdParams
|
|
return
|
|
}
|
|
}
|
|
|
|
if strings.ToLower(hack.String(maxBuf)) == "+" {
|
|
max = nil
|
|
} else {
|
|
if len(maxBuf) == 0 {
|
|
err = ErrCmdParams
|
|
return
|
|
}
|
|
if maxBuf[0] == '(' {
|
|
rangeType |= store.RangeROpen
|
|
max = maxBuf[1:]
|
|
} else if maxBuf[0] == '[' {
|
|
max = maxBuf[1:]
|
|
} else {
|
|
err = ErrCmdParams
|
|
return
|
|
}
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
func zrangebylexCommand(c *client) error {
|
|
args := c.args
|
|
if len(args) != 3 && len(args) != 6 {
|
|
return ErrCmdParams
|
|
}
|
|
|
|
min, max, rangeType, err := zparseMemberRange(args[1], args[2])
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
var offset int = 0
|
|
var count int = -1
|
|
|
|
if len(args) == 6 {
|
|
if strings.ToLower(hack.String(args[3])) != "limit" {
|
|
return ErrSyntax
|
|
}
|
|
|
|
if offset, err = strconv.Atoi(hack.String(args[4])); err != nil {
|
|
return ErrValue
|
|
}
|
|
|
|
if count, err = strconv.Atoi(hack.String(args[5])); err != nil {
|
|
return ErrValue
|
|
}
|
|
}
|
|
|
|
key := args[0]
|
|
ay, err := c.db.ZRangeByLex(key, min, max, rangeType, offset, count)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
c.resp.writeSliceArray(ay)
|
|
return nil
|
|
}
|
|
|
|
func zremrangebylexCommand(c *client) error {
|
|
args := c.args
|
|
if len(args) != 3 {
|
|
return ErrCmdParams
|
|
}
|
|
|
|
min, max, rangeType, err := zparseMemberRange(args[1], args[2])
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
key := args[0]
|
|
n, err := c.db.ZRemRangeByLex(key, min, max, rangeType)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
c.resp.writeInteger(n)
|
|
return nil
|
|
}
|
|
|
|
func zlexcountCommand(c *client) error {
|
|
args := c.args
|
|
if len(args) != 3 {
|
|
return ErrCmdParams
|
|
}
|
|
|
|
min, max, rangeType, err := zparseMemberRange(args[1], args[2])
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
key := args[0]
|
|
n, err := c.db.ZLexCount(key, min, max, rangeType)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
c.resp.writeInteger(n)
|
|
return nil
|
|
}
|
|
|
|
func zkeyexistsCommand(c *client) error {
|
|
args := c.args
|
|
if len(args) != 1 {
|
|
return ErrCmdParams
|
|
}
|
|
n, err := c.db.ZKeyExists(args[0])
|
|
if err != nil {
|
|
return err
|
|
}
|
|
c.resp.writeInteger(n)
|
|
return nil
|
|
}
|
|
|
|
func init() {
|
|
register("zadd", zaddCommand)
|
|
register("zcard", zcardCommand)
|
|
register("zcount", zcountCommand)
|
|
register("zincrby", zincrbyCommand)
|
|
register("zrange", zrangeCommand)
|
|
register("zrangebyscore", zrangebyscoreCommand)
|
|
register("zrank", zrankCommand)
|
|
register("zrem", zremCommand)
|
|
register("zremrangebyrank", zremrangebyrankCommand)
|
|
register("zremrangebyscore", zremrangebyscoreCommand)
|
|
register("zrevrange", zrevrangeCommand)
|
|
register("zrevrank", zrevrankCommand)
|
|
register("zrevrangebyscore", zrevrangebyscoreCommand)
|
|
register("zscore", zscoreCommand)
|
|
|
|
register("zunionstore", zunionstoreCommand)
|
|
register("zinterstore", zinterstoreCommand)
|
|
|
|
register("zrangebylex", zrangebylexCommand)
|
|
register("zremrangebylex", zremrangebylexCommand)
|
|
register("zlexcount", zlexcountCommand)
|
|
|
|
//ledisdb special command
|
|
|
|
register("zclear", zclearCommand)
|
|
register("zmclear", zmclearCommand)
|
|
register("zexpire", zexpireCommand)
|
|
register("zexpireat", zexpireAtCommand)
|
|
register("zttl", zttlCommand)
|
|
register("zpersist", zpersistCommand)
|
|
register("zkeyexists", zkeyexistsCommand)
|
|
}
|