gitea/vendor/github.com/go-redis/redis/v8/command.go

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package redis
import (
"context"
"fmt"
"net"
"strconv"
"time"
"github.com/go-redis/redis/v8/internal"
"github.com/go-redis/redis/v8/internal/hscan"
"github.com/go-redis/redis/v8/internal/proto"
"github.com/go-redis/redis/v8/internal/util"
)
type Cmder interface {
Name() string
FullName() string
Args() []interface{}
String() string
stringArg(int) string
firstKeyPos() int8
setFirstKeyPos(int8)
readTimeout() *time.Duration
readReply(rd *proto.Reader) error
SetErr(error)
Err() error
}
func setCmdsErr(cmds []Cmder, e error) {
for _, cmd := range cmds {
if cmd.Err() == nil {
cmd.SetErr(e)
}
}
}
func cmdsFirstErr(cmds []Cmder) error {
for _, cmd := range cmds {
if err := cmd.Err(); err != nil {
return err
}
}
return nil
}
func writeCmds(wr *proto.Writer, cmds []Cmder) error {
for _, cmd := range cmds {
if err := writeCmd(wr, cmd); err != nil {
return err
}
}
return nil
}
func writeCmd(wr *proto.Writer, cmd Cmder) error {
return wr.WriteArgs(cmd.Args())
}
func cmdFirstKeyPos(cmd Cmder, info *CommandInfo) int {
if pos := cmd.firstKeyPos(); pos != 0 {
return int(pos)
}
switch cmd.Name() {
case "eval", "evalsha":
if cmd.stringArg(2) != "0" {
return 3
}
return 0
case "publish":
return 1
case "memory":
// https://github.com/redis/redis/issues/7493
if cmd.stringArg(1) == "usage" {
return 2
}
}
if info != nil {
return int(info.FirstKeyPos)
}
return 0
}
func cmdString(cmd Cmder, val interface{}) string {
b := make([]byte, 0, 64)
for i, arg := range cmd.Args() {
if i > 0 {
b = append(b, ' ')
}
b = internal.AppendArg(b, arg)
}
if err := cmd.Err(); err != nil {
b = append(b, ": "...)
b = append(b, err.Error()...)
} else if val != nil {
b = append(b, ": "...)
b = internal.AppendArg(b, val)
}
return internal.String(b)
}
//------------------------------------------------------------------------------
type baseCmd struct {
ctx context.Context
args []interface{}
err error
keyPos int8
_readTimeout *time.Duration
}
var _ Cmder = (*Cmd)(nil)
func (cmd *baseCmd) Name() string {
if len(cmd.args) == 0 {
return ""
}
// Cmd name must be lower cased.
return internal.ToLower(cmd.stringArg(0))
}
func (cmd *baseCmd) FullName() string {
switch name := cmd.Name(); name {
case "cluster", "command":
if len(cmd.args) == 1 {
return name
}
if s2, ok := cmd.args[1].(string); ok {
return name + " " + s2
}
return name
default:
return name
}
}
func (cmd *baseCmd) Args() []interface{} {
return cmd.args
}
func (cmd *baseCmd) stringArg(pos int) string {
if pos < 0 || pos >= len(cmd.args) {
return ""
}
s, _ := cmd.args[pos].(string)
return s
}
func (cmd *baseCmd) firstKeyPos() int8 {
return cmd.keyPos
}
func (cmd *baseCmd) setFirstKeyPos(keyPos int8) {
cmd.keyPos = keyPos
}
func (cmd *baseCmd) SetErr(e error) {
cmd.err = e
}
func (cmd *baseCmd) Err() error {
return cmd.err
}
func (cmd *baseCmd) readTimeout() *time.Duration {
return cmd._readTimeout
}
func (cmd *baseCmd) setReadTimeout(d time.Duration) {
cmd._readTimeout = &d
}
//------------------------------------------------------------------------------
type Cmd struct {
baseCmd
val interface{}
}
func NewCmd(ctx context.Context, args ...interface{}) *Cmd {
return &Cmd{
baseCmd: baseCmd{
ctx: ctx,
args: args,
},
}
}
func (cmd *Cmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *Cmd) Val() interface{} {
return cmd.val
}
func (cmd *Cmd) Result() (interface{}, error) {
return cmd.val, cmd.err
}
func (cmd *Cmd) Text() (string, error) {
if cmd.err != nil {
return "", cmd.err
}
switch val := cmd.val.(type) {
case string:
return val, nil
default:
err := fmt.Errorf("redis: unexpected type=%T for String", val)
return "", err
}
}
func (cmd *Cmd) Int() (int, error) {
if cmd.err != nil {
return 0, cmd.err
}
switch val := cmd.val.(type) {
case int64:
return int(val), nil
case string:
return strconv.Atoi(val)
default:
err := fmt.Errorf("redis: unexpected type=%T for Int", val)
return 0, err
}
}
func (cmd *Cmd) Int64() (int64, error) {
if cmd.err != nil {
return 0, cmd.err
}
switch val := cmd.val.(type) {
case int64:
return val, nil
case string:
return strconv.ParseInt(val, 10, 64)
default:
err := fmt.Errorf("redis: unexpected type=%T for Int64", val)
return 0, err
}
}
func (cmd *Cmd) Uint64() (uint64, error) {
if cmd.err != nil {
return 0, cmd.err
}
switch val := cmd.val.(type) {
case int64:
return uint64(val), nil
case string:
return strconv.ParseUint(val, 10, 64)
default:
err := fmt.Errorf("redis: unexpected type=%T for Uint64", val)
return 0, err
}
}
func (cmd *Cmd) Float32() (float32, error) {
if cmd.err != nil {
return 0, cmd.err
}
switch val := cmd.val.(type) {
case int64:
return float32(val), nil
case string:
f, err := strconv.ParseFloat(val, 32)
if err != nil {
return 0, err
}
return float32(f), nil
default:
err := fmt.Errorf("redis: unexpected type=%T for Float32", val)
return 0, err
}
}
func (cmd *Cmd) Float64() (float64, error) {
if cmd.err != nil {
return 0, cmd.err
}
switch val := cmd.val.(type) {
case int64:
return float64(val), nil
case string:
return strconv.ParseFloat(val, 64)
default:
err := fmt.Errorf("redis: unexpected type=%T for Float64", val)
return 0, err
}
}
func (cmd *Cmd) Bool() (bool, error) {
if cmd.err != nil {
return false, cmd.err
}
switch val := cmd.val.(type) {
case int64:
return val != 0, nil
case string:
return strconv.ParseBool(val)
default:
err := fmt.Errorf("redis: unexpected type=%T for Bool", val)
return false, err
}
}
func (cmd *Cmd) readReply(rd *proto.Reader) (err error) {
cmd.val, err = rd.ReadReply(sliceParser)
return err
}
// sliceParser implements proto.MultiBulkParse.
func sliceParser(rd *proto.Reader, n int64) (interface{}, error) {
vals := make([]interface{}, n)
for i := 0; i < len(vals); i++ {
v, err := rd.ReadReply(sliceParser)
if err != nil {
if err == Nil {
vals[i] = nil
continue
}
if err, ok := err.(proto.RedisError); ok {
vals[i] = err
continue
}
return nil, err
}
vals[i] = v
}
return vals, nil
}
//------------------------------------------------------------------------------
type SliceCmd struct {
baseCmd
val []interface{}
}
var _ Cmder = (*SliceCmd)(nil)
func NewSliceCmd(ctx context.Context, args ...interface{}) *SliceCmd {
return &SliceCmd{
baseCmd: baseCmd{
ctx: ctx,
args: args,
},
}
}
func (cmd *SliceCmd) Val() []interface{} {
return cmd.val
}
func (cmd *SliceCmd) Result() ([]interface{}, error) {
return cmd.val, cmd.err
}
func (cmd *SliceCmd) String() string {
return cmdString(cmd, cmd.val)
}
// Scan scans the results from the map into a destination struct. The map keys
// are matched in the Redis struct fields by the `redis:"field"` tag.
func (cmd *SliceCmd) Scan(dst interface{}) error {
if cmd.err != nil {
return cmd.err
}
// Pass the list of keys and values.
// Skip the first two args for: HMGET key
var args []interface{}
if cmd.args[0] == "hmget" {
args = cmd.args[2:]
} else {
// Otherwise, it's: MGET field field ...
args = cmd.args[1:]
}
return hscan.Scan(dst, args, cmd.val)
}
func (cmd *SliceCmd) readReply(rd *proto.Reader) error {
v, err := rd.ReadArrayReply(sliceParser)
if err != nil {
return err
}
cmd.val = v.([]interface{})
return nil
}
//------------------------------------------------------------------------------
type StatusCmd struct {
baseCmd
val string
}
var _ Cmder = (*StatusCmd)(nil)
func NewStatusCmd(ctx context.Context, args ...interface{}) *StatusCmd {
return &StatusCmd{
baseCmd: baseCmd{
ctx: ctx,
args: args,
},
}
}
func (cmd *StatusCmd) Val() string {
return cmd.val
}
func (cmd *StatusCmd) Result() (string, error) {
return cmd.val, cmd.err
}
func (cmd *StatusCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *StatusCmd) readReply(rd *proto.Reader) (err error) {
cmd.val, err = rd.ReadString()
return err
}
//------------------------------------------------------------------------------
type IntCmd struct {
baseCmd
val int64
}
var _ Cmder = (*IntCmd)(nil)
func NewIntCmd(ctx context.Context, args ...interface{}) *IntCmd {
return &IntCmd{
baseCmd: baseCmd{
ctx: ctx,
args: args,
},
}
}
func (cmd *IntCmd) Val() int64 {
return cmd.val
}
func (cmd *IntCmd) Result() (int64, error) {
return cmd.val, cmd.err
}
func (cmd *IntCmd) Uint64() (uint64, error) {
return uint64(cmd.val), cmd.err
}
func (cmd *IntCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *IntCmd) readReply(rd *proto.Reader) (err error) {
cmd.val, err = rd.ReadIntReply()
return err
}
//------------------------------------------------------------------------------
type IntSliceCmd struct {
baseCmd
val []int64
}
var _ Cmder = (*IntSliceCmd)(nil)
func NewIntSliceCmd(ctx context.Context, args ...interface{}) *IntSliceCmd {
return &IntSliceCmd{
baseCmd: baseCmd{
ctx: ctx,
args: args,
},
}
}
func (cmd *IntSliceCmd) Val() []int64 {
return cmd.val
}
func (cmd *IntSliceCmd) Result() ([]int64, error) {
return cmd.val, cmd.err
}
func (cmd *IntSliceCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *IntSliceCmd) readReply(rd *proto.Reader) error {
_, err := rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
cmd.val = make([]int64, n)
for i := 0; i < len(cmd.val); i++ {
num, err := rd.ReadIntReply()
if err != nil {
return nil, err
}
cmd.val[i] = num
}
return nil, nil
})
return err
}
//------------------------------------------------------------------------------
type DurationCmd struct {
baseCmd
val time.Duration
precision time.Duration
}
var _ Cmder = (*DurationCmd)(nil)
func NewDurationCmd(ctx context.Context, precision time.Duration, args ...interface{}) *DurationCmd {
return &DurationCmd{
baseCmd: baseCmd{
ctx: ctx,
args: args,
},
precision: precision,
}
}
func (cmd *DurationCmd) Val() time.Duration {
return cmd.val
}
func (cmd *DurationCmd) Result() (time.Duration, error) {
return cmd.val, cmd.err
}
func (cmd *DurationCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *DurationCmd) readReply(rd *proto.Reader) error {
n, err := rd.ReadIntReply()
if err != nil {
return err
}
switch n {
// -2 if the key does not exist
// -1 if the key exists but has no associated expire
case -2, -1:
cmd.val = time.Duration(n)
default:
cmd.val = time.Duration(n) * cmd.precision
}
return nil
}
//------------------------------------------------------------------------------
type TimeCmd struct {
baseCmd
val time.Time
}
var _ Cmder = (*TimeCmd)(nil)
func NewTimeCmd(ctx context.Context, args ...interface{}) *TimeCmd {
return &TimeCmd{
baseCmd: baseCmd{
ctx: ctx,
args: args,
},
}
}
func (cmd *TimeCmd) Val() time.Time {
return cmd.val
}
func (cmd *TimeCmd) Result() (time.Time, error) {
return cmd.val, cmd.err
}
func (cmd *TimeCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *TimeCmd) readReply(rd *proto.Reader) error {
_, err := rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
if n != 2 {
return nil, fmt.Errorf("got %d elements, expected 2", n)
}
sec, err := rd.ReadInt()
if err != nil {
return nil, err
}
microsec, err := rd.ReadInt()
if err != nil {
return nil, err
}
cmd.val = time.Unix(sec, microsec*1000)
return nil, nil
})
return err
}
//------------------------------------------------------------------------------
type BoolCmd struct {
baseCmd
val bool
}
var _ Cmder = (*BoolCmd)(nil)
func NewBoolCmd(ctx context.Context, args ...interface{}) *BoolCmd {
return &BoolCmd{
baseCmd: baseCmd{
ctx: ctx,
args: args,
},
}
}
func (cmd *BoolCmd) Val() bool {
return cmd.val
}
func (cmd *BoolCmd) Result() (bool, error) {
return cmd.val, cmd.err
}
func (cmd *BoolCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *BoolCmd) readReply(rd *proto.Reader) error {
v, err := rd.ReadReply(nil)
// `SET key value NX` returns nil when key already exists. But
// `SETNX key value` returns bool (0/1). So convert nil to bool.
if err == Nil {
cmd.val = false
return nil
}
if err != nil {
return err
}
switch v := v.(type) {
case int64:
cmd.val = v == 1
return nil
case string:
cmd.val = v == "OK"
return nil
default:
return fmt.Errorf("got %T, wanted int64 or string", v)
}
}
//------------------------------------------------------------------------------
type StringCmd struct {
baseCmd
val string
}
var _ Cmder = (*StringCmd)(nil)
func NewStringCmd(ctx context.Context, args ...interface{}) *StringCmd {
return &StringCmd{
baseCmd: baseCmd{
ctx: ctx,
args: args,
},
}
}
func (cmd *StringCmd) Val() string {
return cmd.val
}
func (cmd *StringCmd) Result() (string, error) {
return cmd.Val(), cmd.err
}
func (cmd *StringCmd) Bytes() ([]byte, error) {
return util.StringToBytes(cmd.val), cmd.err
}
func (cmd *StringCmd) Int() (int, error) {
if cmd.err != nil {
return 0, cmd.err
}
return strconv.Atoi(cmd.Val())
}
func (cmd *StringCmd) Int64() (int64, error) {
if cmd.err != nil {
return 0, cmd.err
}
return strconv.ParseInt(cmd.Val(), 10, 64)
}
func (cmd *StringCmd) Uint64() (uint64, error) {
if cmd.err != nil {
return 0, cmd.err
}
return strconv.ParseUint(cmd.Val(), 10, 64)
}
func (cmd *StringCmd) Float32() (float32, error) {
if cmd.err != nil {
return 0, cmd.err
}
f, err := strconv.ParseFloat(cmd.Val(), 32)
if err != nil {
return 0, err
}
return float32(f), nil
}
func (cmd *StringCmd) Float64() (float64, error) {
if cmd.err != nil {
return 0, cmd.err
}
return strconv.ParseFloat(cmd.Val(), 64)
}
func (cmd *StringCmd) Time() (time.Time, error) {
if cmd.err != nil {
return time.Time{}, cmd.err
}
return time.Parse(time.RFC3339Nano, cmd.Val())
}
func (cmd *StringCmd) Scan(val interface{}) error {
if cmd.err != nil {
return cmd.err
}
return proto.Scan([]byte(cmd.val), val)
}
func (cmd *StringCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *StringCmd) readReply(rd *proto.Reader) (err error) {
cmd.val, err = rd.ReadString()
return err
}
//------------------------------------------------------------------------------
type FloatCmd struct {
baseCmd
val float64
}
var _ Cmder = (*FloatCmd)(nil)
func NewFloatCmd(ctx context.Context, args ...interface{}) *FloatCmd {
return &FloatCmd{
baseCmd: baseCmd{
ctx: ctx,
args: args,
},
}
}
func (cmd *FloatCmd) Val() float64 {
return cmd.val
}
func (cmd *FloatCmd) Result() (float64, error) {
return cmd.Val(), cmd.Err()
}
func (cmd *FloatCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *FloatCmd) readReply(rd *proto.Reader) (err error) {
cmd.val, err = rd.ReadFloatReply()
return err
}
//------------------------------------------------------------------------------
type StringSliceCmd struct {
baseCmd
val []string
}
var _ Cmder = (*StringSliceCmd)(nil)
func NewStringSliceCmd(ctx context.Context, args ...interface{}) *StringSliceCmd {
return &StringSliceCmd{
baseCmd: baseCmd{
ctx: ctx,
args: args,
},
}
}
func (cmd *StringSliceCmd) Val() []string {
return cmd.val
}
func (cmd *StringSliceCmd) Result() ([]string, error) {
return cmd.Val(), cmd.Err()
}
func (cmd *StringSliceCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *StringSliceCmd) ScanSlice(container interface{}) error {
return proto.ScanSlice(cmd.Val(), container)
}
func (cmd *StringSliceCmd) readReply(rd *proto.Reader) error {
_, err := rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
cmd.val = make([]string, n)
for i := 0; i < len(cmd.val); i++ {
switch s, err := rd.ReadString(); {
case err == Nil:
cmd.val[i] = ""
case err != nil:
return nil, err
default:
cmd.val[i] = s
}
}
return nil, nil
})
return err
}
//------------------------------------------------------------------------------
type BoolSliceCmd struct {
baseCmd
val []bool
}
var _ Cmder = (*BoolSliceCmd)(nil)
func NewBoolSliceCmd(ctx context.Context, args ...interface{}) *BoolSliceCmd {
return &BoolSliceCmd{
baseCmd: baseCmd{
ctx: ctx,
args: args,
},
}
}
func (cmd *BoolSliceCmd) Val() []bool {
return cmd.val
}
func (cmd *BoolSliceCmd) Result() ([]bool, error) {
return cmd.val, cmd.err
}
func (cmd *BoolSliceCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *BoolSliceCmd) readReply(rd *proto.Reader) error {
_, err := rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
cmd.val = make([]bool, n)
for i := 0; i < len(cmd.val); i++ {
n, err := rd.ReadIntReply()
if err != nil {
return nil, err
}
cmd.val[i] = n == 1
}
return nil, nil
})
return err
}
//------------------------------------------------------------------------------
type StringStringMapCmd struct {
baseCmd
val map[string]string
}
var _ Cmder = (*StringStringMapCmd)(nil)
func NewStringStringMapCmd(ctx context.Context, args ...interface{}) *StringStringMapCmd {
return &StringStringMapCmd{
baseCmd: baseCmd{
ctx: ctx,
args: args,
},
}
}
func (cmd *StringStringMapCmd) Val() map[string]string {
return cmd.val
}
func (cmd *StringStringMapCmd) Result() (map[string]string, error) {
return cmd.val, cmd.err
}
func (cmd *StringStringMapCmd) String() string {
return cmdString(cmd, cmd.val)
}
// Scan scans the results from the map into a destination struct. The map keys
// are matched in the Redis struct fields by the `redis:"field"` tag.
func (cmd *StringStringMapCmd) Scan(dst interface{}) error {
if cmd.err != nil {
return cmd.err
}
strct, err := hscan.Struct(dst)
if err != nil {
return err
}
for k, v := range cmd.val {
if err := strct.Scan(k, v); err != nil {
return err
}
}
return nil
}
func (cmd *StringStringMapCmd) readReply(rd *proto.Reader) error {
_, err := rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
cmd.val = make(map[string]string, n/2)
for i := int64(0); i < n; i += 2 {
key, err := rd.ReadString()
if err != nil {
return nil, err
}
value, err := rd.ReadString()
if err != nil {
return nil, err
}
cmd.val[key] = value
}
return nil, nil
})
return err
}
//------------------------------------------------------------------------------
type StringIntMapCmd struct {
baseCmd
val map[string]int64
}
var _ Cmder = (*StringIntMapCmd)(nil)
func NewStringIntMapCmd(ctx context.Context, args ...interface{}) *StringIntMapCmd {
return &StringIntMapCmd{
baseCmd: baseCmd{
ctx: ctx,
args: args,
},
}
}
func (cmd *StringIntMapCmd) Val() map[string]int64 {
return cmd.val
}
func (cmd *StringIntMapCmd) Result() (map[string]int64, error) {
return cmd.val, cmd.err
}
func (cmd *StringIntMapCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *StringIntMapCmd) readReply(rd *proto.Reader) error {
_, err := rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
cmd.val = make(map[string]int64, n/2)
for i := int64(0); i < n; i += 2 {
key, err := rd.ReadString()
if err != nil {
return nil, err
}
n, err := rd.ReadIntReply()
if err != nil {
return nil, err
}
cmd.val[key] = n
}
return nil, nil
})
return err
}
//------------------------------------------------------------------------------
type StringStructMapCmd struct {
baseCmd
val map[string]struct{}
}
var _ Cmder = (*StringStructMapCmd)(nil)
func NewStringStructMapCmd(ctx context.Context, args ...interface{}) *StringStructMapCmd {
return &StringStructMapCmd{
baseCmd: baseCmd{
ctx: ctx,
args: args,
},
}
}
func (cmd *StringStructMapCmd) Val() map[string]struct{} {
return cmd.val
}
func (cmd *StringStructMapCmd) Result() (map[string]struct{}, error) {
return cmd.val, cmd.err
}
func (cmd *StringStructMapCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *StringStructMapCmd) readReply(rd *proto.Reader) error {
_, err := rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
cmd.val = make(map[string]struct{}, n)
for i := int64(0); i < n; i++ {
key, err := rd.ReadString()
if err != nil {
return nil, err
}
cmd.val[key] = struct{}{}
}
return nil, nil
})
return err
}
//------------------------------------------------------------------------------
type XMessage struct {
ID string
Values map[string]interface{}
}
type XMessageSliceCmd struct {
baseCmd
val []XMessage
}
var _ Cmder = (*XMessageSliceCmd)(nil)
func NewXMessageSliceCmd(ctx context.Context, args ...interface{}) *XMessageSliceCmd {
return &XMessageSliceCmd{
baseCmd: baseCmd{
ctx: ctx,
args: args,
},
}
}
func (cmd *XMessageSliceCmd) Val() []XMessage {
return cmd.val
}
func (cmd *XMessageSliceCmd) Result() ([]XMessage, error) {
return cmd.val, cmd.err
}
func (cmd *XMessageSliceCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *XMessageSliceCmd) readReply(rd *proto.Reader) error {
var err error
cmd.val, err = readXMessageSlice(rd)
return err
}
func readXMessageSlice(rd *proto.Reader) ([]XMessage, error) {
n, err := rd.ReadArrayLen()
if err != nil {
return nil, err
}
msgs := make([]XMessage, n)
for i := 0; i < n; i++ {
var err error
msgs[i], err = readXMessage(rd)
if err != nil {
return nil, err
}
}
return msgs, nil
}
func readXMessage(rd *proto.Reader) (XMessage, error) {
n, err := rd.ReadArrayLen()
if err != nil {
return XMessage{}, err
}
if n != 2 {
return XMessage{}, fmt.Errorf("got %d, wanted 2", n)
}
id, err := rd.ReadString()
if err != nil {
return XMessage{}, err
}
var values map[string]interface{}
v, err := rd.ReadArrayReply(stringInterfaceMapParser)
if err != nil {
if err != proto.Nil {
return XMessage{}, err
}
} else {
values = v.(map[string]interface{})
}
return XMessage{
ID: id,
Values: values,
}, nil
}
// stringInterfaceMapParser implements proto.MultiBulkParse.
func stringInterfaceMapParser(rd *proto.Reader, n int64) (interface{}, error) {
m := make(map[string]interface{}, n/2)
for i := int64(0); i < n; i += 2 {
key, err := rd.ReadString()
if err != nil {
return nil, err
}
value, err := rd.ReadString()
if err != nil {
return nil, err
}
m[key] = value
}
return m, nil
}
//------------------------------------------------------------------------------
type XStream struct {
Stream string
Messages []XMessage
}
type XStreamSliceCmd struct {
baseCmd
val []XStream
}
var _ Cmder = (*XStreamSliceCmd)(nil)
func NewXStreamSliceCmd(ctx context.Context, args ...interface{}) *XStreamSliceCmd {
return &XStreamSliceCmd{
baseCmd: baseCmd{
ctx: ctx,
args: args,
},
}
}
func (cmd *XStreamSliceCmd) Val() []XStream {
return cmd.val
}
func (cmd *XStreamSliceCmd) Result() ([]XStream, error) {
return cmd.val, cmd.err
}
func (cmd *XStreamSliceCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *XStreamSliceCmd) readReply(rd *proto.Reader) error {
_, err := rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
cmd.val = make([]XStream, n)
for i := 0; i < len(cmd.val); i++ {
i := i
_, err := rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
if n != 2 {
return nil, fmt.Errorf("got %d, wanted 2", n)
}
stream, err := rd.ReadString()
if err != nil {
return nil, err
}
msgs, err := readXMessageSlice(rd)
if err != nil {
return nil, err
}
cmd.val[i] = XStream{
Stream: stream,
Messages: msgs,
}
return nil, nil
})
if err != nil {
return nil, err
}
}
return nil, nil
})
return err
}
//------------------------------------------------------------------------------
type XPending struct {
Count int64
Lower string
Higher string
Consumers map[string]int64
}
type XPendingCmd struct {
baseCmd
val *XPending
}
var _ Cmder = (*XPendingCmd)(nil)
func NewXPendingCmd(ctx context.Context, args ...interface{}) *XPendingCmd {
return &XPendingCmd{
baseCmd: baseCmd{
ctx: ctx,
args: args,
},
}
}
func (cmd *XPendingCmd) Val() *XPending {
return cmd.val
}
func (cmd *XPendingCmd) Result() (*XPending, error) {
return cmd.val, cmd.err
}
func (cmd *XPendingCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *XPendingCmd) readReply(rd *proto.Reader) error {
_, err := rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
if n != 4 {
return nil, fmt.Errorf("got %d, wanted 4", n)
}
count, err := rd.ReadIntReply()
if err != nil {
return nil, err
}
lower, err := rd.ReadString()
if err != nil && err != Nil {
return nil, err
}
higher, err := rd.ReadString()
if err != nil && err != Nil {
return nil, err
}
cmd.val = &XPending{
Count: count,
Lower: lower,
Higher: higher,
}
_, err = rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
for i := int64(0); i < n; i++ {
_, err = rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
if n != 2 {
return nil, fmt.Errorf("got %d, wanted 2", n)
}
consumerName, err := rd.ReadString()
if err != nil {
return nil, err
}
consumerPending, err := rd.ReadInt()
if err != nil {
return nil, err
}
if cmd.val.Consumers == nil {
cmd.val.Consumers = make(map[string]int64)
}
cmd.val.Consumers[consumerName] = consumerPending
return nil, nil
})
if err != nil {
return nil, err
}
}
return nil, nil
})
if err != nil && err != Nil {
return nil, err
}
return nil, nil
})
return err
}
//------------------------------------------------------------------------------
type XPendingExt struct {
ID string
Consumer string
Idle time.Duration
RetryCount int64
}
type XPendingExtCmd struct {
baseCmd
val []XPendingExt
}
var _ Cmder = (*XPendingExtCmd)(nil)
func NewXPendingExtCmd(ctx context.Context, args ...interface{}) *XPendingExtCmd {
return &XPendingExtCmd{
baseCmd: baseCmd{
ctx: ctx,
args: args,
},
}
}
func (cmd *XPendingExtCmd) Val() []XPendingExt {
return cmd.val
}
func (cmd *XPendingExtCmd) Result() ([]XPendingExt, error) {
return cmd.val, cmd.err
}
func (cmd *XPendingExtCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *XPendingExtCmd) readReply(rd *proto.Reader) error {
_, err := rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
cmd.val = make([]XPendingExt, 0, n)
for i := int64(0); i < n; i++ {
_, err := rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
if n != 4 {
return nil, fmt.Errorf("got %d, wanted 4", n)
}
id, err := rd.ReadString()
if err != nil {
return nil, err
}
consumer, err := rd.ReadString()
if err != nil && err != Nil {
return nil, err
}
idle, err := rd.ReadIntReply()
if err != nil && err != Nil {
return nil, err
}
retryCount, err := rd.ReadIntReply()
if err != nil && err != Nil {
return nil, err
}
cmd.val = append(cmd.val, XPendingExt{
ID: id,
Consumer: consumer,
Idle: time.Duration(idle) * time.Millisecond,
RetryCount: retryCount,
})
return nil, nil
})
if err != nil {
return nil, err
}
}
return nil, nil
})
return err
}
//------------------------------------------------------------------------------
2021-03-01 07:08:33 +08:00
type XInfoConsumersCmd struct {
baseCmd
val []XInfoConsumer
}
type XInfoConsumer struct {
Name string
Pending int64
Idle int64
}
var _ Cmder = (*XInfoGroupsCmd)(nil)
func NewXInfoConsumersCmd(ctx context.Context, stream string, group string) *XInfoConsumersCmd {
return &XInfoConsumersCmd{
baseCmd: baseCmd{
ctx: ctx,
args: []interface{}{"xinfo", "consumers", stream, group},
},
}
}
func (cmd *XInfoConsumersCmd) Val() []XInfoConsumer {
return cmd.val
}
func (cmd *XInfoConsumersCmd) Result() ([]XInfoConsumer, error) {
return cmd.val, cmd.err
}
func (cmd *XInfoConsumersCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *XInfoConsumersCmd) readReply(rd *proto.Reader) error {
n, err := rd.ReadArrayLen()
if err != nil {
return err
}
cmd.val = make([]XInfoConsumer, n)
for i := 0; i < n; i++ {
cmd.val[i], err = readXConsumerInfo(rd)
if err != nil {
return err
}
}
return nil
}
func readXConsumerInfo(rd *proto.Reader) (XInfoConsumer, error) {
var consumer XInfoConsumer
n, err := rd.ReadArrayLen()
if err != nil {
return consumer, err
}
if n != 6 {
return consumer, fmt.Errorf("redis: got %d elements in XINFO CONSUMERS reply, wanted 6", n)
}
for i := 0; i < 3; i++ {
key, err := rd.ReadString()
if err != nil {
return consumer, err
}
val, err := rd.ReadString()
if err != nil {
return consumer, err
}
switch key {
case "name":
consumer.Name = val
case "pending":
consumer.Pending, err = strconv.ParseInt(val, 0, 64)
if err != nil {
return consumer, err
}
case "idle":
consumer.Idle, err = strconv.ParseInt(val, 0, 64)
if err != nil {
return consumer, err
}
default:
return consumer, fmt.Errorf("redis: unexpected content %s in XINFO CONSUMERS reply", key)
}
}
return consumer, nil
}
//------------------------------------------------------------------------------
type XInfoGroupsCmd struct {
baseCmd
val []XInfoGroup
}
type XInfoGroup struct {
Name string
Consumers int64
Pending int64
LastDeliveredID string
}
var _ Cmder = (*XInfoGroupsCmd)(nil)
func NewXInfoGroupsCmd(ctx context.Context, stream string) *XInfoGroupsCmd {
return &XInfoGroupsCmd{
baseCmd: baseCmd{
ctx: ctx,
args: []interface{}{"xinfo", "groups", stream},
},
}
}
func (cmd *XInfoGroupsCmd) Val() []XInfoGroup {
return cmd.val
}
func (cmd *XInfoGroupsCmd) Result() ([]XInfoGroup, error) {
return cmd.val, cmd.err
}
func (cmd *XInfoGroupsCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *XInfoGroupsCmd) readReply(rd *proto.Reader) error {
n, err := rd.ReadArrayLen()
if err != nil {
return err
}
cmd.val = make([]XInfoGroup, n)
for i := 0; i < n; i++ {
cmd.val[i], err = readXGroupInfo(rd)
if err != nil {
return err
}
}
return nil
}
func readXGroupInfo(rd *proto.Reader) (XInfoGroup, error) {
var group XInfoGroup
n, err := rd.ReadArrayLen()
if err != nil {
return group, err
}
if n != 8 {
return group, fmt.Errorf("redis: got %d elements in XINFO GROUPS reply, wanted 8", n)
}
for i := 0; i < 4; i++ {
key, err := rd.ReadString()
if err != nil {
return group, err
}
val, err := rd.ReadString()
if err != nil {
return group, err
}
switch key {
case "name":
group.Name = val
case "consumers":
group.Consumers, err = strconv.ParseInt(val, 0, 64)
if err != nil {
return group, err
}
case "pending":
group.Pending, err = strconv.ParseInt(val, 0, 64)
if err != nil {
return group, err
}
case "last-delivered-id":
group.LastDeliveredID = val
default:
return group, fmt.Errorf("redis: unexpected content %s in XINFO GROUPS reply", key)
}
}
return group, nil
}
//------------------------------------------------------------------------------
type XInfoStreamCmd struct {
baseCmd
val *XInfoStream
}
type XInfoStream struct {
Length int64
RadixTreeKeys int64
RadixTreeNodes int64
Groups int64
LastGeneratedID string
FirstEntry XMessage
LastEntry XMessage
}
var _ Cmder = (*XInfoStreamCmd)(nil)
func NewXInfoStreamCmd(ctx context.Context, stream string) *XInfoStreamCmd {
return &XInfoStreamCmd{
baseCmd: baseCmd{
ctx: ctx,
args: []interface{}{"xinfo", "stream", stream},
},
}
}
func (cmd *XInfoStreamCmd) Val() *XInfoStream {
return cmd.val
}
func (cmd *XInfoStreamCmd) Result() (*XInfoStream, error) {
return cmd.val, cmd.err
}
func (cmd *XInfoStreamCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *XInfoStreamCmd) readReply(rd *proto.Reader) error {
v, err := rd.ReadReply(xStreamInfoParser)
if err != nil {
return err
}
cmd.val = v.(*XInfoStream)
return nil
}
func xStreamInfoParser(rd *proto.Reader, n int64) (interface{}, error) {
if n != 14 {
return nil, fmt.Errorf("redis: got %d elements in XINFO STREAM reply,"+
"wanted 14", n)
}
var info XInfoStream
for i := 0; i < 7; i++ {
key, err := rd.ReadString()
if err != nil {
return nil, err
}
switch key {
case "length":
info.Length, err = rd.ReadIntReply()
case "radix-tree-keys":
info.RadixTreeKeys, err = rd.ReadIntReply()
case "radix-tree-nodes":
info.RadixTreeNodes, err = rd.ReadIntReply()
case "groups":
info.Groups, err = rd.ReadIntReply()
case "last-generated-id":
info.LastGeneratedID, err = rd.ReadString()
case "first-entry":
info.FirstEntry, err = readXMessage(rd)
case "last-entry":
info.LastEntry, err = readXMessage(rd)
default:
return nil, fmt.Errorf("redis: unexpected content %s "+
"in XINFO STREAM reply", key)
}
if err != nil {
return nil, err
}
}
return &info, nil
}
//------------------------------------------------------------------------------
type ZSliceCmd struct {
baseCmd
val []Z
}
var _ Cmder = (*ZSliceCmd)(nil)
func NewZSliceCmd(ctx context.Context, args ...interface{}) *ZSliceCmd {
return &ZSliceCmd{
baseCmd: baseCmd{
ctx: ctx,
args: args,
},
}
}
func (cmd *ZSliceCmd) Val() []Z {
return cmd.val
}
func (cmd *ZSliceCmd) Result() ([]Z, error) {
return cmd.val, cmd.err
}
func (cmd *ZSliceCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *ZSliceCmd) readReply(rd *proto.Reader) error {
_, err := rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
cmd.val = make([]Z, n/2)
for i := 0; i < len(cmd.val); i++ {
member, err := rd.ReadString()
if err != nil {
return nil, err
}
score, err := rd.ReadFloatReply()
if err != nil {
return nil, err
}
cmd.val[i] = Z{
Member: member,
Score: score,
}
}
return nil, nil
})
return err
}
//------------------------------------------------------------------------------
type ZWithKeyCmd struct {
baseCmd
val *ZWithKey
}
var _ Cmder = (*ZWithKeyCmd)(nil)
func NewZWithKeyCmd(ctx context.Context, args ...interface{}) *ZWithKeyCmd {
return &ZWithKeyCmd{
baseCmd: baseCmd{
ctx: ctx,
args: args,
},
}
}
func (cmd *ZWithKeyCmd) Val() *ZWithKey {
return cmd.val
}
func (cmd *ZWithKeyCmd) Result() (*ZWithKey, error) {
return cmd.Val(), cmd.Err()
}
func (cmd *ZWithKeyCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *ZWithKeyCmd) readReply(rd *proto.Reader) error {
_, err := rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
if n != 3 {
return nil, fmt.Errorf("got %d elements, expected 3", n)
}
cmd.val = &ZWithKey{}
var err error
cmd.val.Key, err = rd.ReadString()
if err != nil {
return nil, err
}
cmd.val.Member, err = rd.ReadString()
if err != nil {
return nil, err
}
cmd.val.Score, err = rd.ReadFloatReply()
if err != nil {
return nil, err
}
return nil, nil
})
return err
}
//------------------------------------------------------------------------------
type ScanCmd struct {
baseCmd
page []string
cursor uint64
process cmdable
}
var _ Cmder = (*ScanCmd)(nil)
func NewScanCmd(ctx context.Context, process cmdable, args ...interface{}) *ScanCmd {
return &ScanCmd{
baseCmd: baseCmd{
ctx: ctx,
args: args,
},
process: process,
}
}
func (cmd *ScanCmd) Val() (keys []string, cursor uint64) {
return cmd.page, cmd.cursor
}
func (cmd *ScanCmd) Result() (keys []string, cursor uint64, err error) {
return cmd.page, cmd.cursor, cmd.err
}
func (cmd *ScanCmd) String() string {
return cmdString(cmd, cmd.page)
}
func (cmd *ScanCmd) readReply(rd *proto.Reader) (err error) {
cmd.page, cmd.cursor, err = rd.ReadScanReply()
return err
}
// Iterator creates a new ScanIterator.
func (cmd *ScanCmd) Iterator() *ScanIterator {
return &ScanIterator{
cmd: cmd,
}
}
//------------------------------------------------------------------------------
type ClusterNode struct {
ID string
Addr string
}
type ClusterSlot struct {
Start int
End int
Nodes []ClusterNode
}
type ClusterSlotsCmd struct {
baseCmd
val []ClusterSlot
}
var _ Cmder = (*ClusterSlotsCmd)(nil)
func NewClusterSlotsCmd(ctx context.Context, args ...interface{}) *ClusterSlotsCmd {
return &ClusterSlotsCmd{
baseCmd: baseCmd{
ctx: ctx,
args: args,
},
}
}
func (cmd *ClusterSlotsCmd) Val() []ClusterSlot {
return cmd.val
}
func (cmd *ClusterSlotsCmd) Result() ([]ClusterSlot, error) {
return cmd.Val(), cmd.Err()
}
func (cmd *ClusterSlotsCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *ClusterSlotsCmd) readReply(rd *proto.Reader) error {
_, err := rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
cmd.val = make([]ClusterSlot, n)
for i := 0; i < len(cmd.val); i++ {
n, err := rd.ReadArrayLen()
if err != nil {
return nil, err
}
if n < 2 {
err := fmt.Errorf("redis: got %d elements in cluster info, expected at least 2", n)
return nil, err
}
start, err := rd.ReadIntReply()
if err != nil {
return nil, err
}
end, err := rd.ReadIntReply()
if err != nil {
return nil, err
}
nodes := make([]ClusterNode, n-2)
for j := 0; j < len(nodes); j++ {
n, err := rd.ReadArrayLen()
if err != nil {
return nil, err
}
if n != 2 && n != 3 {
err := fmt.Errorf("got %d elements in cluster info address, expected 2 or 3", n)
return nil, err
}
ip, err := rd.ReadString()
if err != nil {
return nil, err
}
port, err := rd.ReadString()
if err != nil {
return nil, err
}
nodes[j].Addr = net.JoinHostPort(ip, port)
if n == 3 {
id, err := rd.ReadString()
if err != nil {
return nil, err
}
nodes[j].ID = id
}
}
cmd.val[i] = ClusterSlot{
Start: int(start),
End: int(end),
Nodes: nodes,
}
}
return nil, nil
})
return err
}
//------------------------------------------------------------------------------
// GeoLocation is used with GeoAdd to add geospatial location.
type GeoLocation struct {
Name string
Longitude, Latitude, Dist float64
GeoHash int64
}
// GeoRadiusQuery is used with GeoRadius to query geospatial index.
type GeoRadiusQuery struct {
Radius float64
// Can be m, km, ft, or mi. Default is km.
Unit string
WithCoord bool
WithDist bool
WithGeoHash bool
Count int
// Can be ASC or DESC. Default is no sort order.
Sort string
Store string
StoreDist string
}
type GeoLocationCmd struct {
baseCmd
q *GeoRadiusQuery
locations []GeoLocation
}
var _ Cmder = (*GeoLocationCmd)(nil)
func NewGeoLocationCmd(ctx context.Context, q *GeoRadiusQuery, args ...interface{}) *GeoLocationCmd {
return &GeoLocationCmd{
baseCmd: baseCmd{
ctx: ctx,
args: geoLocationArgs(q, args...),
},
q: q,
}
}
func geoLocationArgs(q *GeoRadiusQuery, args ...interface{}) []interface{} {
args = append(args, q.Radius)
if q.Unit != "" {
args = append(args, q.Unit)
} else {
args = append(args, "km")
}
if q.WithCoord {
args = append(args, "withcoord")
}
if q.WithDist {
args = append(args, "withdist")
}
if q.WithGeoHash {
args = append(args, "withhash")
}
if q.Count > 0 {
args = append(args, "count", q.Count)
}
if q.Sort != "" {
args = append(args, q.Sort)
}
if q.Store != "" {
args = append(args, "store")
args = append(args, q.Store)
}
if q.StoreDist != "" {
args = append(args, "storedist")
args = append(args, q.StoreDist)
}
return args
}
func (cmd *GeoLocationCmd) Val() []GeoLocation {
return cmd.locations
}
func (cmd *GeoLocationCmd) Result() ([]GeoLocation, error) {
return cmd.locations, cmd.err
}
func (cmd *GeoLocationCmd) String() string {
return cmdString(cmd, cmd.locations)
}
func (cmd *GeoLocationCmd) readReply(rd *proto.Reader) error {
v, err := rd.ReadArrayReply(newGeoLocationSliceParser(cmd.q))
if err != nil {
return err
}
cmd.locations = v.([]GeoLocation)
return nil
}
func newGeoLocationSliceParser(q *GeoRadiusQuery) proto.MultiBulkParse {
return func(rd *proto.Reader, n int64) (interface{}, error) {
locs := make([]GeoLocation, 0, n)
for i := int64(0); i < n; i++ {
v, err := rd.ReadReply(newGeoLocationParser(q))
if err != nil {
return nil, err
}
switch vv := v.(type) {
case string:
locs = append(locs, GeoLocation{
Name: vv,
})
case *GeoLocation:
// TODO: avoid copying
locs = append(locs, *vv)
default:
return nil, fmt.Errorf("got %T, expected string or *GeoLocation", v)
}
}
return locs, nil
}
}
func newGeoLocationParser(q *GeoRadiusQuery) proto.MultiBulkParse {
return func(rd *proto.Reader, n int64) (interface{}, error) {
var loc GeoLocation
var err error
loc.Name, err = rd.ReadString()
if err != nil {
return nil, err
}
if q.WithDist {
loc.Dist, err = rd.ReadFloatReply()
if err != nil {
return nil, err
}
}
if q.WithGeoHash {
loc.GeoHash, err = rd.ReadIntReply()
if err != nil {
return nil, err
}
}
if q.WithCoord {
n, err := rd.ReadArrayLen()
if err != nil {
return nil, err
}
if n != 2 {
return nil, fmt.Errorf("got %d coordinates, expected 2", n)
}
loc.Longitude, err = rd.ReadFloatReply()
if err != nil {
return nil, err
}
loc.Latitude, err = rd.ReadFloatReply()
if err != nil {
return nil, err
}
}
return &loc, nil
}
}
//------------------------------------------------------------------------------
type GeoPos struct {
Longitude, Latitude float64
}
type GeoPosCmd struct {
baseCmd
val []*GeoPos
}
var _ Cmder = (*GeoPosCmd)(nil)
func NewGeoPosCmd(ctx context.Context, args ...interface{}) *GeoPosCmd {
return &GeoPosCmd{
baseCmd: baseCmd{
ctx: ctx,
args: args,
},
}
}
func (cmd *GeoPosCmd) Val() []*GeoPos {
return cmd.val
}
func (cmd *GeoPosCmd) Result() ([]*GeoPos, error) {
return cmd.Val(), cmd.Err()
}
func (cmd *GeoPosCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *GeoPosCmd) readReply(rd *proto.Reader) error {
_, err := rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
cmd.val = make([]*GeoPos, n)
for i := 0; i < len(cmd.val); i++ {
i := i
_, err := rd.ReadReply(func(rd *proto.Reader, n int64) (interface{}, error) {
longitude, err := rd.ReadFloatReply()
if err != nil {
return nil, err
}
latitude, err := rd.ReadFloatReply()
if err != nil {
return nil, err
}
cmd.val[i] = &GeoPos{
Longitude: longitude,
Latitude: latitude,
}
return nil, nil
})
if err != nil {
if err == Nil {
cmd.val[i] = nil
continue
}
return nil, err
}
}
return nil, nil
})
return err
}
//------------------------------------------------------------------------------
type CommandInfo struct {
Name string
Arity int8
Flags []string
ACLFlags []string
FirstKeyPos int8
LastKeyPos int8
StepCount int8
ReadOnly bool
}
type CommandsInfoCmd struct {
baseCmd
val map[string]*CommandInfo
}
var _ Cmder = (*CommandsInfoCmd)(nil)
func NewCommandsInfoCmd(ctx context.Context, args ...interface{}) *CommandsInfoCmd {
return &CommandsInfoCmd{
baseCmd: baseCmd{
ctx: ctx,
args: args,
},
}
}
func (cmd *CommandsInfoCmd) Val() map[string]*CommandInfo {
return cmd.val
}
func (cmd *CommandsInfoCmd) Result() (map[string]*CommandInfo, error) {
return cmd.Val(), cmd.Err()
}
func (cmd *CommandsInfoCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *CommandsInfoCmd) readReply(rd *proto.Reader) error {
_, err := rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
cmd.val = make(map[string]*CommandInfo, n)
for i := int64(0); i < n; i++ {
v, err := rd.ReadReply(commandInfoParser)
if err != nil {
return nil, err
}
vv := v.(*CommandInfo)
cmd.val[vv.Name] = vv
}
return nil, nil
})
return err
}
func commandInfoParser(rd *proto.Reader, n int64) (interface{}, error) {
const numArgRedis5 = 6
const numArgRedis6 = 7
switch n {
case numArgRedis5, numArgRedis6:
// continue
default:
return nil, fmt.Errorf("redis: got %d elements in COMMAND reply, wanted 7", n)
}
var cmd CommandInfo
var err error
cmd.Name, err = rd.ReadString()
if err != nil {
return nil, err
}
arity, err := rd.ReadIntReply()
if err != nil {
return nil, err
}
cmd.Arity = int8(arity)
_, err = rd.ReadReply(func(rd *proto.Reader, n int64) (interface{}, error) {
cmd.Flags = make([]string, n)
for i := 0; i < len(cmd.Flags); i++ {
switch s, err := rd.ReadString(); {
case err == Nil:
cmd.Flags[i] = ""
case err != nil:
return nil, err
default:
cmd.Flags[i] = s
}
}
return nil, nil
})
if err != nil {
return nil, err
}
firstKeyPos, err := rd.ReadIntReply()
if err != nil {
return nil, err
}
cmd.FirstKeyPos = int8(firstKeyPos)
lastKeyPos, err := rd.ReadIntReply()
if err != nil {
return nil, err
}
cmd.LastKeyPos = int8(lastKeyPos)
stepCount, err := rd.ReadIntReply()
if err != nil {
return nil, err
}
cmd.StepCount = int8(stepCount)
for _, flag := range cmd.Flags {
if flag == "readonly" {
cmd.ReadOnly = true
break
}
}
if n == numArgRedis5 {
return &cmd, nil
}
_, err = rd.ReadReply(func(rd *proto.Reader, n int64) (interface{}, error) {
cmd.ACLFlags = make([]string, n)
for i := 0; i < len(cmd.ACLFlags); i++ {
switch s, err := rd.ReadString(); {
case err == Nil:
cmd.ACLFlags[i] = ""
case err != nil:
return nil, err
default:
cmd.ACLFlags[i] = s
}
}
return nil, nil
})
if err != nil {
return nil, err
}
return &cmd, nil
}
//------------------------------------------------------------------------------
type cmdsInfoCache struct {
fn func(ctx context.Context) (map[string]*CommandInfo, error)
once internal.Once
cmds map[string]*CommandInfo
}
func newCmdsInfoCache(fn func(ctx context.Context) (map[string]*CommandInfo, error)) *cmdsInfoCache {
return &cmdsInfoCache{
fn: fn,
}
}
func (c *cmdsInfoCache) Get(ctx context.Context) (map[string]*CommandInfo, error) {
err := c.once.Do(func() error {
cmds, err := c.fn(ctx)
if err != nil {
return err
}
// Extensions have cmd names in upper case. Convert them to lower case.
for k, v := range cmds {
lower := internal.ToLower(k)
if lower != k {
cmds[lower] = v
}
}
c.cmds = cmds
return nil
})
return c.cmds, err
}
//------------------------------------------------------------------------------
type SlowLog struct {
ID int64
Time time.Time
Duration time.Duration
Args []string
// These are also optional fields emitted only by Redis 4.0 or greater:
// https://redis.io/commands/slowlog#output-format
ClientAddr string
ClientName string
}
type SlowLogCmd struct {
baseCmd
val []SlowLog
}
var _ Cmder = (*SlowLogCmd)(nil)
func NewSlowLogCmd(ctx context.Context, args ...interface{}) *SlowLogCmd {
return &SlowLogCmd{
baseCmd: baseCmd{
ctx: ctx,
args: args,
},
}
}
func (cmd *SlowLogCmd) Val() []SlowLog {
return cmd.val
}
func (cmd *SlowLogCmd) Result() ([]SlowLog, error) {
return cmd.Val(), cmd.Err()
}
func (cmd *SlowLogCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *SlowLogCmd) readReply(rd *proto.Reader) error {
_, err := rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
cmd.val = make([]SlowLog, n)
for i := 0; i < len(cmd.val); i++ {
n, err := rd.ReadArrayLen()
if err != nil {
return nil, err
}
if n < 4 {
err := fmt.Errorf("redis: got %d elements in slowlog get, expected at least 4", n)
return nil, err
}
id, err := rd.ReadIntReply()
if err != nil {
return nil, err
}
createdAt, err := rd.ReadIntReply()
if err != nil {
return nil, err
}
createdAtTime := time.Unix(createdAt, 0)
costs, err := rd.ReadIntReply()
if err != nil {
return nil, err
}
costsDuration := time.Duration(costs) * time.Microsecond
cmdLen, err := rd.ReadArrayLen()
if err != nil {
return nil, err
}
if cmdLen < 1 {
err := fmt.Errorf("redis: got %d elements commands reply in slowlog get, expected at least 1", cmdLen)
return nil, err
}
cmdString := make([]string, cmdLen)
for i := 0; i < cmdLen; i++ {
cmdString[i], err = rd.ReadString()
if err != nil {
return nil, err
}
}
var address, name string
for i := 4; i < n; i++ {
str, err := rd.ReadString()
if err != nil {
return nil, err
}
if i == 4 {
address = str
} else if i == 5 {
name = str
}
}
cmd.val[i] = SlowLog{
ID: id,
Time: createdAtTime,
Duration: costsDuration,
Args: cmdString,
ClientAddr: address,
ClientName: name,
}
}
return nil, nil
})
return err
}