// 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)
}
})
}
// 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)
}
})
}
// 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)
}
})
}
// SMEMBERS
func (m *Miniredis) cmdSmembers(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) != 1 {
setDirty(r.Client())
out.WriteErrorString("ERR wrong number of arguments for 'smembers' 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) != "set" {
out.WriteErrorString(ErrWrongType.Error())
return
}
members := db.setMembers(key)
out.WriteBulkLen(len(members))
for _, elem := range members {
out.WriteString(elem)
}
})
}
// 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)
}
})
}
// SDIFF
func (m *Miniredis) cmdSdiff(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
}
keys := r.Args
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
set, err := db.setDiff(keys)
if err != nil {
out.WriteErrorString(err.Error())
return
}
out.WriteBulkLen(len(set))
for k := range set {
out.WriteString(k)
}
})
}
// HGETALL
func (m *Miniredis) cmdHgetall(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)
t, ok := db.keys[key]
if !ok {
out.WriteBulkLen(0)
return
}
if t != "hash" {
out.WriteErrorString(msgWrongType)
return
}
out.WriteBulkLen(len(db.hashKeys[key]) * 2)
for _, k := range db.hashFields(key) {
out.WriteString(k)
out.WriteString(db.hashGet(key, k))
}
})
}
// LRANGE
func (m *Miniredis) cmdLrange(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 != "list" {
out.WriteErrorString(msgWrongType)
return
}
l := db.listKeys[key]
if len(l) == 0 {
out.WriteBulkLen(0)
return
}
rs, re := redisRange(len(l), start, end, false)
out.WriteBulkLen(re - rs)
for _, el := range l[rs:re] {
out.WriteString(el)
}
})
}
// EXEC
func (m *Miniredis) cmdExec(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
}
ctx := getCtx(r.Client())
if !inTx(ctx) {
return redeo.ClientError("EXEC without MULTI")
}
if dirtyTx(ctx) {
out.WriteErrorString("EXECABORT Transaction discarded because of previous errors.")
return nil
}
m.Lock()
defer m.Unlock()
// Check WATCHed keys.
for t, version := range ctx.watch {
if m.db(t.db).keyVersion[t.key] > version {
// Abort! Abort!
stopTx(ctx)
out.WriteBulkLen(0)
return nil
}
}
out.WriteBulkLen(len(ctx.transaction))
for _, cb := range ctx.transaction {
cb(out, ctx)
}
// We're done
stopTx(ctx)
return nil
}
// KEYSSTART
func (m *Redico) cmdKeysStart(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)
keys := db.keyStart(key)
out.WriteBulkLen(len(keys))
for _, s := range keys {
out.WriteString(s)
}
})
}
// SDIFF
func (m *Miniredis) cmdSdiff(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) < 1 {
setDirty(r.Client())
out.WriteErrorString("ERR wrong number of arguments for 'sdiff' command")
return nil
}
keys := r.Args
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
set, err := db.setDiff(keys)
if err != nil {
out.WriteErrorString(err.Error())
return
}
out.WriteBulkLen(len(set))
for k := range set {
out.WriteString(k)
}
})
}
// SCAN
func (m *Redico) cmdScan(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
}
cursor, err := strconv.Atoi(r.Args[0])
if err != nil {
setDirty(r.Client())
out.WriteErrorString(msgInvalidCursor)
return nil
}
// MATCH and COUNT options
var withMatch bool
var match string
args := r.Args[1:]
for len(args) > 0 {
if strings.ToLower(args[0]) == "count" {
if len(args) < 2 {
setDirty(r.Client())
out.WriteErrorString(msgSyntaxError)
return nil
}
_, err := strconv.Atoi(args[1])
if err != nil {
setDirty(r.Client())
out.WriteErrorString(msgInvalidInt)
return nil
}
// We do nothing with count.
args = args[2:]
continue
}
if strings.ToLower(args[0]) == "match" {
if len(args) < 2 {
setDirty(r.Client())
out.WriteErrorString(msgSyntaxError)
return nil
}
withMatch = true
match = args[1]
args = args[2:]
continue
}
setDirty(r.Client())
out.WriteErrorString(msgSyntaxError)
return nil
}
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
// We return _all_ (matched) keys every time.
if cursor != 0 {
// Invalid cursor.
out.WriteBulkLen(2)
out.WriteString("0") // no next cursor
out.WriteBulkLen(0) // no elements
return
}
keys := db.allKeys()
if withMatch {
keys = matchKeys(keys, match)
}
out.WriteBulkLen(2)
out.WriteString("0") // no next cursor
out.WriteBulkLen(len(keys))
for _, k := range keys {
out.WriteString(k)
}
})
}
// HSCAN
func (m *Miniredis) cmdHscan(out *redeo.Responder, r *redeo.Request) error {
if len(r.Args) < 2 {
setDirty(r.Client())
out.WriteErrorString("ERR wrong number of arguments for 'hscan' command")
return nil
}
key := r.Args[0]
cursor, err := strconv.Atoi(r.Args[1])
if err != nil {
setDirty(r.Client())
out.WriteErrorString(msgInvalidCursor)
return nil
}
// MATCH and COUNT options
var withMatch bool
var match string
args := r.Args[2:]
for len(args) > 0 {
if strings.ToLower(args[0]) == "count" {
if len(args) < 2 {
setDirty(r.Client())
out.WriteErrorString(msgSyntaxError)
return nil
}
_, err := strconv.Atoi(args[1])
if err != nil {
setDirty(r.Client())
out.WriteErrorString(msgInvalidInt)
return nil
}
// We do nothing with count.
args = args[2:]
continue
}
if strings.ToLower(args[0]) == "match" {
if len(args) < 2 {
setDirty(r.Client())
out.WriteErrorString(msgSyntaxError)
return nil
}
withMatch = true
match = args[1]
args = args[2:]
continue
}
setDirty(r.Client())
out.WriteErrorString(msgSyntaxError)
return nil
}
return withTx(m, out, r, func(out *redeo.Responder, ctx *connCtx) {
db := m.db(ctx.selectedDB)
// We return _all_ (matched) keys every time.
if cursor != 0 {
// Invalid cursor.
out.WriteBulkLen(2)
out.WriteString("0") // no next cursor
out.WriteBulkLen(0) // no elements
return
}
if db.exists(key) && db.t(key) != "hash" {
out.WriteErrorString(ErrWrongType.Error())
return
}
members := db.hashFields(key)
if withMatch {
members = matchKeys(members, match)
}
out.WriteBulkLen(2)
out.WriteString("0") // no next cursor
// HSCAN gives key, values.
out.WriteBulkLen(len(members) * 2)
for _, k := range members {
out.WriteString(k)
out.WriteString(db.hashGet(key, k))
}
})
}
// 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])
}
})
}
// ZRANGEBYLEX
func (m *Miniredis) cmdZrangebylex(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
}
args := r.Args[3:]
withLimit := false
limitStart := 0
limitEnd := 0
for len(args) > 0 {
if strings.ToLower(args[0]) == "limit" {
withLimit = true
args = args[1:]
if len(args) < 2 {
out.WriteErrorString(msgSyntaxError)
return nil
}
limitStart, err = strconv.Atoi(args[0])
if err != nil {
setDirty(r.Client())
out.WriteErrorString(msgInvalidInt)
return nil
}
limitEnd, err = strconv.Atoi(args[1])
if err != nil {
setDirty(r.Client())
out.WriteErrorString(msgInvalidInt)
return nil
}
args = args[2:]
continue
}
// Syntax error
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 !db.exists(key) {
out.WriteBulkLen(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)
// Apply LIMIT ranges. That's <start> <elements>. Unlike RANGE.
if withLimit {
if limitStart < 0 {
members = nil
} else {
if limitStart < len(members) {
members = members[limitStart:]
} else {
// out of range
members = nil
}
if limitEnd >= 0 {
if len(members) > limitEnd {
members = members[:limitEnd]
}
}
}
}
out.WriteBulkLen(len(members))
for _, el := range members {
out.WriteString(el)
}
})
}
