// RPOP
func (m *Miniredis) cmdRpop(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
}
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.WriteNil()
return
}
if db.t(key) != "list" {
out.WriteErrorString(msgWrongType)
return
}
elem := db.listPop(key)
out.WriteString(elem)
})
}
// RPOPLPUSH
func (m *Miniredis) cmdRpoplpush(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
}
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)
})
}
// 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)
}
})
}
// RANDOMKEY
func (m *Miniredis) cmdRandomkey(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) != 0 {
setDirty(r.Client())
return r.WrongNumberOfArgs()
}
if !m.handleAuth(r.Client(), out) {
return nil
}
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
if len(db.keys) == 0 {
out.WriteNil()
return
}
nr := rand.Intn(len(db.keys))
for k := range db.keys {
if nr == 0 {
out.WriteString(k)
return
}
nr--
}
})
}
// HGET
func (m *Miniredis) cmdHget(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) != 2 {
setDirty(r.Client())
out.WriteErrorString("ERR wrong number of arguments for 'hget' 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.WriteNil()
return
}
if t != "hash" {
out.WriteErrorString(msgWrongType)
return
}
value, ok := db.hashKeys[key][field]
if !ok {
out.WriteNil()
return
}
out.WriteString(value)
})
}
// SPOP
func (m *Miniredis) cmdSpop(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) != 1 {
setDirty(r.Client())
out.WriteErrorString("ERR wrong number of arguments for 'spop' 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.WriteNil()
return
}
if db.t(key) != "set" {
out.WriteErrorString(ErrWrongType.Error())
return
}
members := db.setMembers(key)
member := members[rand.Intn(len(members))]
db.setRem(key, member)
out.WriteString(member)
})
}
// MGET
func (m *Miniredis) cmdMget(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
}
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
out.WriteBulkLen(len(r.Args))
for _, k := range r.Args {
if t, ok := db.keys[k]; !ok || t != "string" {
out.WriteNil()
continue
}
v, ok := db.stringKeys[k]
if !ok {
// Should not happen, we just checked keys[]
out.WriteNil()
continue
}
out.WriteString(v)
}
})
}
// GETSET
func (m *Miniredis) cmdGetset(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]
value := r.Args[1]
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
}
old, ok := db.stringKeys[key]
db.stringSet(key, value)
// a GETSET clears the expire
delete(db.expire, key)
if !ok {
out.WriteNil()
return
}
out.WriteString(old)
return
})
}
// 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)
})
}
// ZSCORE
func (m *Miniredis) cmdZscore(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]
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)))
})
}
// HGET
func (m *Miniredis) cmdHget(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]
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.WriteNil()
return
}
if t != "hash" {
out.WriteErrorString(msgWrongType)
return
}
value, ok := db.hashKeys[key][field]
if !ok {
out.WriteNil()
return
}
out.WriteString(value)
})
}
// GET
func (m *Redico) cmdGet(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
}
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.WriteNil()
return
}
out.WriteString(db.stringGet(key))
})
}
// LINDEX
func (m *Miniredis) cmdLindex(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]
offset, 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)
t, ok := db.keys[key]
if !ok {
// No such key
out.WriteNil()
return
}
if t != "list" {
out.WriteErrorString(msgWrongType)
return
}
l := db.listKeys[key]
if offset < 0 {
offset = len(l) + offset
}
if offset < 0 || offset > len(l)-1 {
out.WriteNil()
return
}
out.WriteString(l[offset])
})
}
// SRANDMEMBER
func (m *Miniredis) cmdSrandmember(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) < 1 {
setDirty(r.Client())
out.WriteErrorString("ERR wrong number of arguments for 'srandmember' command")
return nil
}
if len(r.Args) > 2 {
setDirty(r.Client())
out.WriteErrorString(msgSyntaxError)
return nil
}
key := r.Args[0]
count := 0
withCount := false
if len(r.Args) == 2 {
var err error
count, err = strconv.Atoi(r.Args[1])
if err != nil {
setDirty(r.Client())
out.WriteErrorString(msgInvalidInt)
return nil
}
withCount = true
}
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) != "set" {
out.WriteErrorString(ErrWrongType.Error())
return
}
members := db.setMembers(key)
if count < 0 {
// Non-unique elements is allowed with negative count.
out.WriteBulkLen(-count)
for count != 0 {
member := members[rand.Intn(len(members))]
out.WriteString(member)
count++
}
return
}
// Must be unique elements.
shuffle(members)
if count > len(members) {
count = len(members)
}
if !withCount {
out.WriteString(members[0])
return
}
out.WriteBulkLen(count)
for i := range make([]struct{}, count) {
out.WriteString(members[i])
}
})
}
// SET
func (m *Miniredis) cmdSet(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
}
var (
nx = false // set iff not exists
xx = false // set iff exists
expire = 0 // For seconds and milliseconds.
)
key := r.Args[0]
value := r.Args[1]
r.Args = r.Args[2:]
for len(r.Args) > 0 {
switch strings.ToUpper(r.Args[0]) {
case "NX":
nx = true
r.Args = r.Args[1:]
continue
case "XX":
xx = true
r.Args = r.Args[1:]
continue
case "EX", "PX":
if len(r.Args) < 2 {
setDirty(r.Client())
out.WriteErrorString(msgInvalidInt)
return nil
}
var err error
expire, err = strconv.Atoi(r.Args[1])
if err != nil {
setDirty(r.Client())
out.WriteErrorString(msgInvalidInt)
return nil
}
r.Args = r.Args[2:]
continue
default:
setDirty(r.Client())
out.WriteErrorString(msgSyntaxError)
return nil
}
}
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
if nx {
if db.exists(key) {
out.WriteNil()
return
}
}
if xx {
if !db.exists(key) {
out.WriteNil()
return
}
}
db.del(key, true) // be sure to remove existing values of other type keys.
// a vanilla SET clears the expire
db.stringSet(key, value)
if expire != 0 {
db.expire[key] = expire
}
out.WriteOK()
})
}