// ZSCORE
func (m *Miniredis) cmdZscore(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) != 2 {
setDirty(r.Client())
out.WriteErrorString("ERR wrong number of arguments for 'zscore' command")
return nil
}
key := r.Args[0]
member := r.Args[1]
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
if !db.exists(key) {
out.WriteNil()
return
}
if db.t(key) != "zset" {
out.WriteErrorString(ErrWrongType.Error())
return
}
if !db.ssetExists(key, member) {
out.WriteNil()
return
}
out.WriteString(formatFloat(db.ssetScore(key, member)))
})
}
// GETRANGE
func (m *Miniredis) cmdGetrange(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) != 3 {
setDirty(r.Client())
return r.WrongNumberOfArgs()
}
if !m.handleAuth(r.Client(), out) {
return nil
}
key := r.Args[0]
start, err := strconv.Atoi(r.Args[1])
if err != nil {
setDirty(r.Client())
out.WriteErrorString(msgInvalidInt)
return nil
}
end, err := strconv.Atoi(r.Args[2])
if err != nil {
setDirty(r.Client())
out.WriteErrorString(msgInvalidInt)
return nil
}
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
if t, ok := db.keys[key]; ok && t != "string" {
out.WriteErrorString(msgWrongType)
return
}
v := db.stringKeys[key]
out.WriteString(withRange(v, start, end))
})
}
// ZINCRBY
func (m *Miniredis) cmdZincrby(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) != 3 {
setDirty(r.Client())
out.WriteErrorString("ERR wrong number of arguments for 'zincrby' command")
return nil
}
key := r.Args[0]
delta, err := strconv.ParseFloat(r.Args[1], 64)
if err != nil {
setDirty(r.Client())
out.WriteErrorString(msgInvalidFloat)
return nil
}
member := r.Args[2]
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
if db.exists(key) && db.t(key) != "zset" {
out.WriteErrorString(msgWrongType)
return
}
newScore := db.ssetIncrby(key, member, delta)
out.WriteString(formatFloat(newScore))
})
}
// LPOP
func (m *Miniredis) cmdLpop(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) != 1 {
setDirty(r.Client())
out.WriteErrorString("ERR wrong number of arguments for 'lpop' command")
return nil
}
key := r.Args[0]
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
if !db.exists(key) {
// Non-existing key is fine.
out.WriteNil()
return
}
if db.t(key) != "list" {
out.WriteErrorString(msgWrongType)
return
}
elem := db.listLpop(key)
out.WriteString(elem)
})
}
// LLEN
func (m *Miniredis) cmdLlen(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) != 1 {
setDirty(r.Client())
out.WriteErrorString("ERR wrong number of arguments for 'llen' command")
return nil
}
key := r.Args[0]
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
t, ok := db.keys[key]
if !ok {
// No such key. That's zero length.
out.WriteZero()
return
}
if t != "list" {
out.WriteErrorString(msgWrongType)
return
}
out.WriteInt(len(db.listKeys[key]))
})
}
// HSETNX
func (m *Miniredis) cmdHsetnx(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) != 3 {
setDirty(r.Client())
out.WriteErrorString("ERR wrong number of arguments for 'hsetnx' command")
return nil
}
key := r.Args[0]
field := r.Args[1]
value := r.Args[2]
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
if t, ok := db.keys[key]; ok && t != "hash" {
out.WriteErrorString(msgWrongType)
return
}
if _, ok := db.hashKeys[key]; !ok {
db.hashKeys[key] = map[string]string{}
db.keys[key] = "hash"
}
_, ok := db.hashKeys[key][field]
if ok {
out.WriteZero()
return
}
db.hashKeys[key][field] = value
db.keyVersion[key]++
out.WriteOne()
})
}
// HKEYS
func (m *Miniredis) cmdHkeys(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) != 1 {
setDirty(r.Client())
out.WriteErrorString("ERR wrong number of arguments for 'hkeys' command")
return nil
}
key := r.Args[0]
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
if !db.exists(key) {
out.WriteBulkLen(0)
return
}
if db.t(key) != "hash" {
out.WriteErrorString(msgWrongType)
return
}
fields := db.hashFields(key)
out.WriteBulkLen(len(fields))
for _, f := range fields {
out.WriteString(f)
}
})
}
// SCARD
func (m *Miniredis) cmdScard(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) != 1 {
setDirty(r.Client())
out.WriteErrorString("ERR wrong number of arguments for 'scard' command")
return nil
}
key := r.Args[0]
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
if !db.exists(key) {
out.WriteZero()
return
}
if db.t(key) != "set" {
out.WriteErrorString(ErrWrongType.Error())
return
}
members := db.setMembers(key)
out.WriteInt(len(members))
})
}
// HEXISTS
func (m *Miniredis) cmdHexists(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) != 2 {
setDirty(r.Client())
out.WriteErrorString("ERR wrong number of arguments for 'hexists' command")
return nil
}
key := r.Args[0]
field := r.Args[1]
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
t, ok := db.keys[key]
if !ok {
out.WriteInt(0)
return
}
if t != "hash" {
out.WriteErrorString(msgWrongType)
return
}
if _, ok := db.hashKeys[key][field]; !ok {
out.WriteInt(0)
return
}
out.WriteInt(1)
})
}
// SISMEMBER
func (m *Miniredis) cmdSismember(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) != 2 {
setDirty(r.Client())
out.WriteErrorString("ERR wrong number of arguments for 'sismember' command")
return nil
}
key := r.Args[0]
value := r.Args[1]
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
if !db.exists(key) {
out.WriteZero()
return
}
if db.t(key) != "set" {
out.WriteErrorString(ErrWrongType.Error())
return
}
if db.setIsMember(key, value) {
out.WriteOne()
return
}
out.WriteZero()
})
}
// SREM
func (m *Miniredis) cmdSrem(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) < 2 {
setDirty(r.Client())
out.WriteErrorString("ERR wrong number of arguments for 'srem' command")
return nil
}
key := r.Args[0]
fields := r.Args[1:]
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
if !db.exists(key) {
out.WriteInt(0)
return
}
if db.t(key) != "set" {
out.WriteErrorString(ErrWrongType.Error())
return
}
out.WriteInt(db.setRem(key, fields...))
})
}
// HMGET
func (m *Miniredis) cmdHmget(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) < 2 {
setDirty(r.Client())
out.WriteErrorString("ERR wrong number of arguments for 'hmget' command")
return nil
}
key := r.Args[0]
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
if t, ok := db.keys[key]; ok && t != "hash" {
out.WriteErrorString(msgWrongType)
return
}
f, ok := db.hashKeys[key]
if !ok {
f = map[string]string{}
}
out.WriteBulkLen(len(r.Args) - 1)
for _, k := range r.Args[1:] {
v, ok := f[k]
if !ok {
out.WriteNil()
continue
}
out.WriteString(v)
}
})
}
// HSET
func (m *Miniredis) cmdHset(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) != 3 {
setDirty(r.Client())
out.WriteErrorString("ERR wrong number of arguments for 'hset' command")
return nil
}
key := r.Args[0]
field := r.Args[1]
value := r.Args[2]
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
if t, ok := db.keys[key]; ok && t != "hash" {
out.WriteErrorString(msgWrongType)
return
}
if db.hashSet(key, field, value) {
out.WriteZero()
} else {
out.WriteOne()
}
})
}
// HINCRBYFLOAT
func (m *Miniredis) cmdHincrbyfloat(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) != 3 {
setDirty(r.Client())
out.WriteErrorString("ERR wrong number of arguments for 'hincrbyfloat' command")
return nil
}
key := r.Args[0]
field := r.Args[1]
delta, err := strconv.ParseFloat(r.Args[2], 64)
if err != nil {
setDirty(r.Client())
out.WriteErrorString(msgInvalidFloat)
return nil
}
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
if t, ok := db.keys[key]; ok && t != "hash" {
out.WriteErrorString(msgWrongType)
return
}
v, err := db.hashIncrfloat(key, field, delta)
if err != nil {
out.WriteErrorString(err.Error())
return
}
out.WriteString(formatFloat(v))
})
}
// ZREM
func (m *Miniredis) cmdZrem(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) < 2 {
setDirty(r.Client())
out.WriteErrorString("ERR wrong number of arguments for 'zrem' command")
return nil
}
key := r.Args[0]
members := r.Args[1:]
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
if !db.exists(key) {
out.WriteZero()
return
}
if db.t(key) != "zset" {
out.WriteErrorString(ErrWrongType.Error())
return
}
deleted := 0
for _, member := range members {
if db.ssetRem(key, member) {
deleted++
}
}
out.WriteInt(deleted)
})
}
// MMSET
func (m *Miniredis) cmdHmset(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) < 3 {
setDirty(r.Client())
out.WriteErrorString("ERR wrong number of arguments for 'hmset' command")
return nil
}
key := r.Args[0]
args := r.Args[1:]
if len(args)%2 != 0 {
setDirty(r.Client())
out.WriteErrorString("ERR wrong number of arguments for HMSET")
return nil
}
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
if t, ok := db.keys[key]; ok && t != "hash" {
out.WriteErrorString(msgWrongType)
return
}
for len(args) > 0 {
field := args[0]
value := args[1]
args = args[2:]
db.hashSet(key, field, value)
}
out.WriteOK()
})
}
// HVALS
func (m *Miniredis) cmdHvals(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) != 1 {
setDirty(r.Client())
out.WriteErrorString("ERR wrong number of arguments for 'hvals' command")
return nil
}
key := r.Args[0]
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
t, ok := db.keys[key]
if !ok {
out.WriteBulkLen(0)
return
}
if t != "hash" {
out.WriteErrorString(msgWrongType)
return
}
out.WriteBulkLen(len(db.hashKeys[key]))
for _, v := range db.hashKeys[key] {
out.WriteString(v)
}
})
}
// PING
func (m *Redico) cmdPing(out *redeo.Responder, r *redeo.Request) error {
if !m.handleAuth(r.Client(), out) {
return nil
}
out.WriteInlineString("PONG")
return nil
}
// RPUSHX
func (m *Miniredis) cmdRpushx(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) != 2 {
setDirty(r.Client())
out.WriteErrorString("ERR wrong number of arguments for 'rpushx' command")
return nil
}
key := r.Args[0]
value := r.Args[1]
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
if !db.exists(key) {
out.WriteZero()
return
}
if db.t(key) != "list" {
out.WriteErrorString(msgWrongType)
return
}
newLen := db.listPush(key, value)
out.WriteInt(newLen)
})
}
// RPOPLPUSH
func (m *Miniredis) cmdRpoplpush(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) != 2 {
setDirty(r.Client())
out.WriteErrorString("ERR wrong number of arguments for 'rpoplpush' command")
return nil
}
src := r.Args[0]
dst := r.Args[1]
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
if !db.exists(src) {
out.WriteNil()
return
}
if db.t(src) != "list" || (db.exists(dst) && db.t(dst) != "list") {
out.WriteErrorString(msgWrongType)
return
}
elem := db.listPop(src)
db.listLpush(dst, elem)
out.WriteString(elem)
})
}
// BITCOUNT
func (m *Miniredis) cmdBitcount(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) < 1 {
setDirty(r.Client())
return r.WrongNumberOfArgs()
}
if !m.handleAuth(r.Client(), out) {
return nil
}
var (
key = r.Args[0]
useRange = false
start, end = 0, 0
args = r.Args[1:]
)
if len(args) >= 2 {
useRange = true
var err error
start, err = strconv.Atoi(args[0])
if err != nil {
setDirty(r.Client())
out.WriteErrorString(msgInvalidInt)
return nil
}
end, err = strconv.Atoi(args[1])
if err != nil {
setDirty(r.Client())
out.WriteErrorString(msgInvalidInt)
return nil
}
args = args[2:]
}
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
if !db.exists(key) {
out.WriteZero()
return
}
if db.t(key) != "string" {
out.WriteErrorString(msgWrongType)
return
}
// Real redis only checks after it knows the key is there and a string.
if len(args) != 0 {
out.WriteErrorString(msgSyntaxError)
return
}
v := db.stringKeys[key]
if useRange {
v = withRange(v, start, end)
}
out.WriteInt(countBits([]byte(v)))
})
}
// LREM
func (m *Miniredis) cmdLrem(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) != 3 {
setDirty(r.Client())
out.WriteErrorString("ERR wrong number of arguments for 'lrem' command")
return nil
}
key := r.Args[0]
count, err := strconv.Atoi(r.Args[1])
if err != nil {
setDirty(r.Client())
out.WriteErrorString(msgInvalidInt)
return nil
}
value := r.Args[2]
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
if !db.exists(key) {
out.WriteZero()
return
}
if db.t(key) != "list" {
out.WriteErrorString(msgWrongType)
return
}
l := db.listKeys[key]
if count < 0 {
reverseSlice(l)
}
deleted := 0
newL := []string{}
toDelete := len(l)
if count < 0 {
toDelete = -count
}
if count > 0 {
toDelete = count
}
for _, el := range l {
if el == value {
if toDelete > 0 {
deleted++
toDelete--
continue
}
}
newL = append(newL, el)
}
if count < 0 {
reverseSlice(newL)
}
db.listKeys[key] = newL
db.keyVersion[key]++
out.WriteInt(deleted)
})
}
// LINSERT
func (m *Miniredis) cmdLinsert(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) != 4 {
setDirty(r.Client())
out.WriteErrorString("ERR wrong number of arguments for 'linsert' command")
return nil
}
key := r.Args[0]
where := 0
switch strings.ToLower(r.Args[1]) {
case "before":
where = -1
case "after":
where = +1
default:
setDirty(r.Client())
out.WriteErrorString(msgSyntaxError)
return nil
}
pivot := r.Args[2]
value := r.Args[3]
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
t, ok := db.keys[key]
if !ok {
// No such key
out.WriteZero()
return
}
if t != "list" {
out.WriteErrorString(msgWrongType)
return
}
l := db.listKeys[key]
for i, el := range l {
if el != pivot {
continue
}
if where < 0 {
l = append(l[:i], append(listKey{value}, l[i:]...)...)
} else {
if i == len(l)-1 {
l = append(l, value)
} else {
l = append(l[:i+1], append(listKey{value}, l[i+1:]...)...)
}
}
db.listKeys[key] = l
db.keyVersion[key]++
out.WriteInt(len(l))
return
}
out.WriteInt(-1)
})
}
// ECHO
func (m *Miniredis) cmdEcho(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) != 1 {
setDirty(r.Client())
out.WriteErrorString("usage error")
return nil
}
msg := r.Args[0]
out.WriteString(msg)
return nil
}
// MSET
func (m *Miniredis) cmdMset(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) < 2 {
setDirty(r.Client())
return r.WrongNumberOfArgs()
}
if !m.handleAuth(r.Client(), out) {
return nil
}
if len(r.Args)%2 != 0 {
setDirty(r.Client())
// non-default error message
out.WriteErrorString("ERR wrong number of arguments for MSET")
return nil
}
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
for len(r.Args) > 0 {
key := r.Args[0]
value := r.Args[1]
r.Args = r.Args[2:]
db.del(key, true) // clear TTL
db.stringSet(key, value)
}
out.WriteOK()
})
}
// SETBIT
func (m *Miniredis) cmdSetbit(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) != 3 {
setDirty(r.Client())
return r.WrongNumberOfArgs()
}
if !m.handleAuth(r.Client(), out) {
return nil
}
key := r.Args[0]
bit, err := strconv.Atoi(r.Args[1])
if err != nil || bit < 0 {
setDirty(r.Client())
return redeo.ClientError("bit offset is not an integer or out of range")
}
newBit, err := strconv.Atoi(r.Args[2])
if err != nil || (newBit != 0 && newBit != 1) {
setDirty(r.Client())
return redeo.ClientError("bit is not an integer or out of range")
}
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
if t, ok := db.keys[key]; ok && t != "string" {
out.WriteErrorString(msgWrongType)
return
}
value := []byte(db.stringKeys[key])
ourByteNr := bit / 8
ourBitNr := bit % 8
if ourByteNr > len(value)-1 {
// Too short. Expand.
newValue := make([]byte, ourByteNr+1)
copy(newValue, value)
value = newValue
}
old := 0
if toBits(value[ourByteNr])[ourBitNr] {
old = 1
}
if newBit == 0 {
value[ourByteNr] &^= 1 << uint8(7-ourBitNr)
} else {
value[ourByteNr] |= 1 << uint8(7-ourBitNr)
}
db.stringSet(key, string(value))
out.WriteInt(old)
})
}
// PSETEX
func (m *Miniredis) cmdPsetex(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) != 3 {
setDirty(r.Client())
return r.WrongNumberOfArgs()
}
if !m.handleAuth(r.Client(), out) {
return nil
}
key := r.Args[0]
ttl, err := strconv.Atoi(r.Args[1])
if err != nil {
setDirty(r.Client())
out.WriteErrorString(msgInvalidInt)
return nil
}
value := r.Args[2]
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
db.del(key, true) // Clear any existing keys.
db.stringSet(key, value)
db.expire[key] = ttl // We put millisecond keys in with the second keys.
out.WriteOK()
})
}
// DECRBY
func (m *Miniredis) cmdDecrby(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) != 2 {
setDirty(r.Client())
return r.WrongNumberOfArgs()
}
if !m.handleAuth(r.Client(), out) {
return nil
}
key := r.Args[0]
delta, err := strconv.Atoi(r.Args[1])
if err != nil {
setDirty(r.Client())
out.WriteErrorString(msgInvalidInt)
return nil
}
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
if t, ok := db.keys[key]; ok && t != "string" {
out.WriteErrorString(msgWrongType)
return
}
v, err := db.stringIncr(key, -delta)
if err != nil {
out.WriteErrorString(err.Error())
return
}
// Don't touch TTL
out.WriteInt(v)
})
}
// UNWATCH
func (m *Miniredis) cmdUnwatch(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) != 0 {
setDirty(r.Client())
out.WriteErrorString("ERR wrong number of arguments for 'unwatch' command")
return nil
}
// Doesn't matter if UNWATCH is in a TX or not. Looks like a Redis bug to me.
unwatch(getCtx(r.Client()))
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
// Do nothing if it's called in a transaction.
out.WriteOK()
})
}
// ZREMRANGEBYLEX
func (m *Miniredis) cmdZremrangebylex(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) != 3 {
setDirty(r.Client())
return r.WrongNumberOfArgs()
}
if !m.handleAuth(r.Client(), out) {
return nil
}
key := r.Args[0]
min, minIncl, err := parseLexrange(r.Args[1])
if err != nil {
setDirty(r.Client())
out.WriteErrorString(err.Error())
return nil
}
max, maxIncl, err := parseLexrange(r.Args[2])
if err != nil {
setDirty(r.Client())
out.WriteErrorString(err.Error())
return nil
}
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
if !db.exists(key) {
out.WriteInt(0)
return
}
if db.t(key) != "zset" {
out.WriteErrorString(ErrWrongType.Error())
return
}
members := db.ssetMembers(key)
// Just key sort. If scores are not the same we don't care.
sort.Strings(members)
members = withLexRange(members, min, minIncl, max, maxIncl)
for _, el := range members {
db.ssetRem(key, el)
}
out.WriteInt(len(members))
})
}