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Merge pull request #830 from go-redis/feature/x-group 

Add streams group related commands
This commit is contained in:
Vladimir Mihailenco 2018-08-02 16:03:22 +03:00 committed by GitHub
parent 7e6413d467 34916092ba
commit ad7024da36
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 1018 additions and 619 deletions
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709
command.go
View File

@ -3,6 +3,7 @@ package redis
import (
"bytes"
"fmt"
"net"
"strconv"
"strings"
"time"
@ -181,6 +182,33 @@ func (cmd *Cmd) readReply(cn *pool.Conn) error {
return nil
}
// Implements proto.MultiBulkParse
func sliceParser(rd *proto.Reader, n int64) (interface{}, error) {
vals := make([]interface{}, 0, n)
for i := int64(0); i < n; i++ {
v, err := rd.ReadReply(sliceParser)
if err != nil {
if err == Nil {
vals = append(vals, nil)
continue
}
if err, ok := err.(proto.RedisError); ok {
vals = append(vals, err)
continue
}
return nil, err
}
switch v := v.(type) {
case []byte:
vals = append(vals, string(v))
default:
vals = append(vals, v)
}
}
return vals, nil
}
//------------------------------------------------------------------------------
type SliceCmd struct {
@ -363,6 +391,25 @@ func (cmd *TimeCmd) readReply(cn *pool.Conn) error {
return nil
}
// Implements proto.MultiBulkParse
func timeParser(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
}
return time.Unix(sec, microsec*1000), nil
}
//------------------------------------------------------------------------------
type BoolCmd struct {
@ -560,6 +607,22 @@ func (cmd *StringSliceCmd) readReply(cn *pool.Conn) error {
return nil
}
// Implements proto.MultiBulkParse
func stringSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
ss := make([]string, 0, n)
for i := int64(0); i < n; i++ {
s, err := rd.ReadStringReply()
if err == Nil {
ss = append(ss, "")
} else if err != nil {
return nil, err
} else {
ss = append(ss, s)
}
}
return ss, nil
}
//------------------------------------------------------------------------------
type BoolSliceCmd struct {
@ -598,6 +661,19 @@ func (cmd *BoolSliceCmd) readReply(cn *pool.Conn) error {
return nil
}
// Implements proto.MultiBulkParse
func boolSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
bools := make([]bool, 0, n)
for i := int64(0); i < n; i++ {
n, err := rd.ReadIntReply()
if err != nil {
return nil, err
}
bools = append(bools, n == 1)
}
return bools, nil
}
//------------------------------------------------------------------------------
type StringStringMapCmd struct {
@ -636,6 +712,25 @@ func (cmd *StringStringMapCmd) readReply(cn *pool.Conn) error {
return nil
}
// Implements proto.MultiBulkParse
func stringStringMapParser(rd *proto.Reader, n int64) (interface{}, error) {
m := make(map[string]string, n/2)
for i := int64(0); i < n; i += 2 {
key, err := rd.ReadStringReply()
if err != nil {
return nil, err
}
value, err := rd.ReadStringReply()
if err != nil {
return nil, err
}
m[key] = value
}
return m, nil
}
//------------------------------------------------------------------------------
type StringIntMapCmd struct {
@ -674,6 +769,25 @@ func (cmd *StringIntMapCmd) readReply(cn *pool.Conn) error {
return nil
}
// Implements proto.MultiBulkParse
func stringIntMapParser(rd *proto.Reader, n int64) (interface{}, error) {
m := make(map[string]int64, n/2)
for i := int64(0); i < n; i += 2 {
key, err := rd.ReadStringReply()
if err != nil {
return nil, err
}
n, err := rd.ReadIntReply()
if err != nil {
return nil, err
}
m[key] = n
}
return m, nil
}
//------------------------------------------------------------------------------
type StringStructMapCmd struct {
@ -712,24 +826,121 @@ func (cmd *StringStructMapCmd) readReply(cn *pool.Conn) error {
return nil
}
//------------------------------------------------------------------------------
type XStream struct {
Stream string
Messages []*XMessage
// Implements proto.MultiBulkParse
func stringStructMapParser(rd *proto.Reader, n int64) (interface{}, error) {
m := make(map[string]struct{}, n)
for i := int64(0); i < n; i++ {
key, err := rd.ReadStringReply()
if err != nil {
return nil, err
}
m[key] = struct{}{}
}
return m, nil
}
//------------------------------------------------------------------------------
type XMessage struct {
ID string
Values map[string]interface{}
}
type XMessageSliceCmd struct {
baseCmd
val []XMessage
}
var _ Cmder = (*XMessageSliceCmd)(nil)
func NewXMessageSliceCmd(args ...interface{}) *XMessageSliceCmd {
return &XMessageSliceCmd{
baseCmd: baseCmd{_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(cn *pool.Conn) error {
var v interface{}
v, cmd.err = cn.Rd.ReadArrayReply(xMessageSliceParser)
if cmd.err != nil {
return cmd.err
}
cmd.val = v.([]XMessage)
return nil
}
// Implements proto.MultiBulkParse
func xMessageSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
msgs := make([]XMessage, 0, n)
for i := int64(0); i < n; i++ {
_, err := rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
id, err := rd.ReadStringReply()
if err != nil {
return nil, err
}
v, err := rd.ReadArrayReply(stringInterfaceMapParser)
if err != nil {
return nil, err
}
msgs = append(msgs, XMessage{
ID: id,
Values: v.(map[string]interface{}),
})
return nil, nil
})
if err != nil {
return nil, err
}
}
return msgs, nil
}
// 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.ReadStringReply()
if err != nil {
return nil, err
}
value, err := rd.ReadStringReply()
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
val []XStream
}
var _ Cmder = (*XStreamSliceCmd)(nil)
@ -740,11 +951,11 @@ func NewXStreamSliceCmd(args ...interface{}) *XStreamSliceCmd {
}
}
func (cmd *XStreamSliceCmd) Val() []*XStream {
func (cmd *XStreamSliceCmd) Val() []XStream {
return cmd.val
}
func (cmd *XStreamSliceCmd) Result() ([]*XStream, error) {
func (cmd *XStreamSliceCmd) Result() ([]XStream, error) {
return cmd.val, cmd.err
}
@ -758,25 +969,15 @@ func (cmd *XStreamSliceCmd) readReply(cn *pool.Conn) error {
if cmd.err != nil {
return cmd.err
}
cmd.val = v.([]*XStream)
cmd.val = v.([]XStream)
return nil
}
// Implements proto.MultiBulkParse
func xStreamSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
xx := make([]*XStream, n)
ret := make([]XStream, 0, n)
for i := int64(0); i < n; i++ {
v, err := rd.ReadArrayReply(xStreamParser)
if err != nil {
return nil, err
}
xx[i] = v.(*XStream)
}
return xx, nil
}
// Implements proto.MultiBulkParse
func xStreamParser(rd *proto.Reader, n int64) (interface{}, error) {
_, err := rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
if n != 2 {
return nil, fmt.Errorf("got %d, wanted 2", n)
}
@ -791,99 +992,218 @@ func xStreamParser(rd *proto.Reader, n int64) (interface{}, error) {
return nil, err
}
return &XStream{
ret = append(ret, XStream{
Stream: stream,
Messages: v.([]*XMessage),
}, nil
Messages: v.([]XMessage),
})
return nil, nil
})
if err != nil {
return nil, err
}
}
return ret, nil
}
//------------------------------------------------------------------------------
type XMessageSliceCmd struct {
baseCmd
val []*XMessage
type XPending struct {
Count int64
Lower string
Higher string
Consumers map[string]int64
}
var _ Cmder = (*XMessageSliceCmd)(nil)
type XPendingCmd struct {
baseCmd
val *XPending
}
func NewXMessageSliceCmd(args ...interface{}) *XMessageSliceCmd {
return &XMessageSliceCmd{
var _ Cmder = (*XPendingCmd)(nil)
func NewXPendingCmd(args ...interface{}) *XPendingCmd {
return &XPendingCmd{
baseCmd: baseCmd{_args: args},
}
}
func (cmd *XMessageSliceCmd) Val() []*XMessage {
func (cmd *XPendingCmd) Val() *XPending {
return cmd.val
}
func (cmd *XMessageSliceCmd) Result() ([]*XMessage, error) {
func (cmd *XPendingCmd) Result() (*XPending, error) {
return cmd.val, cmd.err
}
func (cmd *XMessageSliceCmd) String() string {
func (cmd *XPendingCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *XMessageSliceCmd) readReply(cn *pool.Conn) error {
var v interface{}
v, cmd.err = cn.Rd.ReadArrayReply(xMessageSliceParser)
func (cmd *XPendingCmd) readReply(cn *pool.Conn) error {
var info interface{}
info, cmd.err = cn.Rd.ReadArrayReply(xPendingParser)
if cmd.err != nil {
return cmd.err
}
cmd.val = v.([]*XMessage)
cmd.val = info.(*XPending)
return nil
}
// Implements proto.MultiBulkParse
func xMessageSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
msgs := make([]*XMessage, n)
for i := int64(0); i < n; i++ {
v, err := rd.ReadArrayReply(xMessageParser)
func xPendingParser(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
}
msgs[i] = v.(*XMessage)
}
return msgs, nil
lower, err := rd.ReadStringReply()
if err != nil && err != Nil {
return nil, err
}
higher, err := rd.ReadStringReply()
if err != nil && err != Nil {
return nil, err
}
pending := &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.ReadStringReply()
if err != nil {
return nil, err
}
consumerPendingStr, err := rd.ReadStringReply()
if err != nil {
return nil, err
}
consumerPending, err := strconv.ParseInt(consumerPendingStr, 10, 64)
if err != nil {
return nil, err
}
if pending.Consumers == nil {
pending.Consumers = make(map[string]int64)
}
pending.Consumers[consumerName] = consumerPending
return nil, nil
})
if err != nil {
return nil, err
}
}
return nil, nil
})
if err != nil && err != Nil {
return nil, err
}
return pending, nil
}
//------------------------------------------------------------------------------
type XPendingExt struct {
Id string
Consumer string
Idle time.Duration
RetryCount int64
}
type XPendingExtCmd struct {
baseCmd
val []XPendingExt
}
var _ Cmder = (*XPendingExtCmd)(nil)
func NewXPendingExtCmd(args ...interface{}) *XPendingExtCmd {
return &XPendingExtCmd{
baseCmd: baseCmd{_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(cn *pool.Conn) error {
var info interface{}
info, cmd.err = cn.Rd.ReadArrayReply(xPendingExtSliceParser)
if cmd.err != nil {
return cmd.err
}
cmd.val = info.([]XPendingExt)
return nil
}
func xPendingExtSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
ret := 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)
}
// Implements proto.MultiBulkParse
func xMessageParser(rd *proto.Reader, n int64) (interface{}, error) {
id, err := rd.ReadStringReply()
if err != nil {
return nil, err
}
v, err := rd.ReadArrayReply(xKeyValueParser)
if err != nil {
consumer, err := rd.ReadStringReply()
if err != nil && err != Nil {
return nil, err
}
return &XMessage{
ID: id,
Values: v.(map[string]interface{}),
}, nil
}
// Implements proto.MultiBulkParse
func xKeyValueParser(rd *proto.Reader, n int64) (interface{}, error) {
values := make(map[string]interface{}, n)
for i := int64(0); i < n; i += 2 {
key, err := rd.ReadStringReply()
if err != nil {
idle, err := rd.ReadIntReply()
if err != nil && err != Nil {
return nil, err
}
value, err := rd.ReadStringReply()
if err != nil {
retryCount, err := rd.ReadIntReply()
if err != nil && err != Nil {
return nil, err
}
values[key] = value
ret = append(ret, XPendingExt{
Id: id,
Consumer: consumer,
Idle: time.Duration(idle) * time.Millisecond,
RetryCount: retryCount,
})
return nil, nil
})
if err != nil {
return nil, err
}
return values, nil
}
return ret, nil
}
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
@ -923,6 +1243,27 @@ func (cmd *ZSliceCmd) readReply(cn *pool.Conn) error {
return nil
}
// Implements proto.MultiBulkParse
func zSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
zz := make([]Z, n/2)
for i := int64(0); i < n; i += 2 {
var err error
z := &zz[i/2]
z.Member, err = rd.ReadStringReply()
if err != nil {
return nil, err
}
z.Score, err = rd.ReadFloatReply()
if err != nil {
return nil, err
}
}
return zz, nil
}
//------------------------------------------------------------------------------
type ScanCmd struct {
@ -1016,6 +1357,69 @@ func (cmd *ClusterSlotsCmd) readReply(cn *pool.Conn) error {
return nil
}
// Implements proto.MultiBulkParse
func clusterSlotsParser(rd *proto.Reader, n int64) (interface{}, error) {
slots := make([]ClusterSlot, n)
for i := 0; i < len(slots); 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.ReadStringReply()
if err != nil {
return nil, err
}
port, err := rd.ReadIntReply()
if err != nil {
return nil, err
}
nodes[j].Addr = net.JoinHostPort(ip, strconv.FormatInt(port, 10))
if n == 3 {
id, err := rd.ReadStringReply()
if err != nil {
return nil, err
}
nodes[j].Id = id
}
}
slots[i] = ClusterSlot{
Start: int(start),
End: int(end),
Nodes: nodes,
}
}
return slots, nil
}
//------------------------------------------------------------------------------
// GeoLocation is used with GeoAdd to add geospatial location.
@ -1107,6 +1511,73 @@ func (cmd *GeoLocationCmd) readReply(cn *pool.Conn) error {
return 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.ReadStringReply()
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
}
}
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 []byte:
locs = append(locs, GeoLocation{
Name: string(vv),
})
case *GeoLocation:
locs = append(locs, *vv)
default:
return nil, fmt.Errorf("got %T, expected string or *GeoLocation", v)
}
}
return locs, nil
}
}
//------------------------------------------------------------------------------
type GeoPos struct {
@ -1149,6 +1620,44 @@ func (cmd *GeoPosCmd) readReply(cn *pool.Conn) error {
return nil
}
func geoPosSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
positions := make([]*GeoPos, 0, n)
for i := int64(0); i < n; i++ {
v, err := rd.ReadReply(geoPosParser)
if err != nil {
if err == Nil {
positions = append(positions, nil)
continue
}
return nil, err
}
switch v := v.(type) {
case *GeoPos:
positions = append(positions, v)
default:
return nil, fmt.Errorf("got %T, expected *GeoPos", v)
}
}
return positions, nil
}
func geoPosParser(rd *proto.Reader, n int64) (interface{}, error) {
var pos GeoPos
var err error
pos.Longitude, err = rd.ReadFloatReply()
if err != nil {
return nil, err
}
pos.Latitude, err = rd.ReadFloatReply()
if err != nil {
return nil, err
}
return &pos, nil
}
//------------------------------------------------------------------------------
type CommandInfo struct {
@ -1197,6 +1706,74 @@ func (cmd *CommandsInfoCmd) readReply(cn *pool.Conn) error {
return nil
}
// Implements proto.MultiBulkParse
func commandInfoSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
m := 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)
m[vv.Name] = vv
}
return m, nil
}
func commandInfoParser(rd *proto.Reader, n int64) (interface{}, error) {
var cmd CommandInfo
var err error
if n != 6 {
return nil, fmt.Errorf("redis: got %d elements in COMMAND reply, wanted 6", n)
}
cmd.Name, err = rd.ReadStringReply()
if err != nil {
return nil, err
}
arity, err := rd.ReadIntReply()
if err != nil {
return nil, err
}
cmd.Arity = int8(arity)
flags, err := rd.ReadReply(stringSliceParser)
if err != nil {
return nil, err
}
cmd.Flags = flags.([]string)
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
}
}
return &cmd, nil
}
//------------------------------------------------------------------------------
type cmdsInfoCache struct {

242
commands.go
View File

@ -172,16 +172,26 @@ type Cmdable interface {
SRem(key string, members ...interface{}) *IntCmd
SUnion(keys ...string) *StringSliceCmd
SUnionStore(destination string, keys ...string) *IntCmd
XAdd(stream, id string, els map[string]interface{}) *StringCmd
XAddExt(opt *XAddExt) *StringCmd
XLen(key string) *IntCmd
XAdd(a *XAddArgs) *StringCmd
XLen(stream string) *IntCmd
XRange(stream, start, stop string) *XMessageSliceCmd
XRangeN(stream, start, stop string, count int64) *XMessageSliceCmd
XRevRange(stream string, start, stop string) *XMessageSliceCmd
XRevRangeN(stream string, start, stop string, count int64) *XMessageSliceCmd
XRead(streams ...string) *XStreamSliceCmd
XReadN(count int64, streams ...string) *XStreamSliceCmd
XReadExt(opt *XReadExt) *XStreamSliceCmd
XRead(a *XReadArgs) *XStreamSliceCmd
XReadStreams(streams ...string) *XStreamSliceCmd
XGroupCreate(stream, group, start string) *StatusCmd
XGroupSetID(stream, group, start string) *StatusCmd
XGroupDestroy(stream, group string) *IntCmd
XGroupDelConsumer(stream, group, consumer string) *IntCmd
XReadGroup(a *XReadGroupArgs) *XStreamSliceCmd
XAck(stream, group string, ids ...string) *IntCmd
XPending(stream, group string) *XPendingCmd
XPendingExt(a *XPendingExtArgs) *XPendingExtCmd
XClaim(a *XClaimArgs) *XMessageSliceCmd
XClaimJustID(a *XClaimArgs) *StringSliceCmd
XTrim(key string, maxLen int64) *IntCmd
XTrimApprox(key string, maxLen int64) *IntCmd
ZAdd(key string, members ...Z) *IntCmd
ZAddNX(key string, members ...Z) *IntCmd
ZAddXX(key string, members ...Z) *IntCmd
@ -1300,7 +1310,7 @@ func (c *cmdable) SUnionStore(destination string, keys ...string) *IntCmd {
//------------------------------------------------------------------------------
type XAddExt struct {
type XAddArgs struct {
Stream string
MaxLen int64 // MAXLEN N
MaxLenApprox int64 // MAXLEN ~ N
@ -1308,40 +1318,32 @@ type XAddExt struct {
Values map[string]interface{}
}
func (c *cmdable) XAddExt(opt *XAddExt) *StringCmd {
a := make([]interface{}, 0, 6+len(opt.Values)*2)
a = append(a, "xadd")
a = append(a, opt.Stream)
if opt.MaxLen > 0 {
a = append(a, "maxlen", opt.MaxLen)
} else if opt.MaxLenApprox > 0 {
a = append(a, "maxlen", "~", opt.MaxLenApprox)
func (c *cmdable) XAdd(a *XAddArgs) *StringCmd {
args := make([]interface{}, 0, 6+len(a.Values)*2)
args = append(args, "xadd")
args = append(args, a.Stream)
if a.MaxLen > 0 {
args = append(args, "maxlen", a.MaxLen)
} else if a.MaxLenApprox > 0 {
args = append(args, "maxlen", "~", a.MaxLenApprox)
}
if opt.ID != "" {
a = append(a, opt.ID)
if a.ID != "" {
args = append(args, a.ID)
} else {
a = append(a, "*")
args = append(args, "*")
}
for k, v := range opt.Values {
a = append(a, k)
a = append(a, v)
for k, v := range a.Values {
args = append(args, k)
args = append(args, v)
}
cmd := NewStringCmd(a...)
cmd := NewStringCmd(args...)
c.process(cmd)
return cmd
}
func (c *cmdable) XAdd(stream, id string, values map[string]interface{}) *StringCmd {
return c.XAddExt(&XAddExt{
Stream: stream,
ID: id,
Values: values,
})
}
func (c *cmdable) XLen(key string) *IntCmd {
cmd := NewIntCmd("xlen", key)
func (c *cmdable) XLen(stream string) *IntCmd {
cmd := NewIntCmd("xlen", stream)
c.process(cmd)
return cmd
}
@ -1370,55 +1372,173 @@ func (c *cmdable) XRevRangeN(stream, start, stop string, count int64) *XMessageS
return cmd
}
type XReadExt struct {
type XReadArgs struct {
Streams []string
Count int64
Block time.Duration
}
func (c *cmdable) XReadExt(opt *XReadExt) *XStreamSliceCmd {
a := make([]interface{}, 0, 5+len(opt.Streams))
a = append(a, "xread")
if opt != nil {
if opt.Count > 0 {
a = append(a, "count")
a = append(a, opt.Count)
func (c *cmdable) XRead(a *XReadArgs) *XStreamSliceCmd {
args := make([]interface{}, 0, 5+len(a.Streams))
args = append(args, "xread")
if a.Count > 0 {
args = append(args, "count")
args = append(args, a.Count)
}
if opt.Block >= 0 {
a = append(a, "block")
a = append(a, int64(opt.Block/time.Millisecond))
if a.Block >= 0 {
args = append(args, "block")
args = append(args, int64(a.Block/time.Millisecond))
}
}
a = append(a, "streams")
for _, s := range opt.Streams {
a = append(a, s)
args = append(args, "streams")
for _, s := range a.Streams {
args = append(args, s)
}
cmd := NewXStreamSliceCmd(a...)
cmd := NewXStreamSliceCmd(args...)
c.process(cmd)
return cmd
}
func (c *cmdable) XRead(streams ...string) *XStreamSliceCmd {
return c.XReadExt(&XReadExt{
func (c *cmdable) XReadStreams(streams ...string) *XStreamSliceCmd {
return c.XRead(&XReadArgs{
Streams: streams,
Block: -1,
})
}
func (c *cmdable) XReadN(count int64, streams ...string) *XStreamSliceCmd {
return c.XReadExt(&XReadExt{
Streams: streams,
Count: count,
Block: -1,
})
func (c *cmdable) XGroupCreate(stream, group, start string) *StatusCmd {
cmd := NewStatusCmd("xgroup", "create", stream, group, start)
c.process(cmd)
return cmd
}
func (c *cmdable) XReadBlock(block time.Duration, streams ...string) *XStreamSliceCmd {
return c.XReadExt(&XReadExt{
Streams: streams,
Block: block,
})
func (c *cmdable) XGroupSetID(stream, group, start string) *StatusCmd {
cmd := NewStatusCmd("xgroup", "setid", stream, group, start)
c.process(cmd)
return cmd
}
func (c *cmdable) XGroupDestroy(stream, group string) *IntCmd {
cmd := NewIntCmd("xgroup", "destroy", stream, group)
c.process(cmd)
return cmd
}
func (c *cmdable) XGroupDelConsumer(stream, group, consumer string) *IntCmd {
cmd := NewIntCmd("xgroup", "delconsumer", stream, group, consumer)
c.process(cmd)
return cmd
}
type XReadGroupArgs struct {
Group string
Consumer string
Streams []string
Count int64
Block time.Duration
}
func (c *cmdable) XReadGroup(a *XReadGroupArgs) *XStreamSliceCmd {
args := make([]interface{}, 0, 8+len(a.Streams))
args = append(args, "xreadgroup", "group", a.Group, a.Consumer)
if a.Count > 0 {
args = append(args, "count", a.Count)
}
if a.Block >= 0 {
args = append(args, "block", int64(a.Block/time.Millisecond))
}
args = append(args, "streams")
for _, s := range a.Streams {
args = append(args, s)
}
cmd := NewXStreamSliceCmd(args...)
c.process(cmd)
return cmd
}
func (c *cmdable) XAck(stream, group string, ids ...string) *IntCmd {
args := []interface{}{"xack", stream, group}
for _, id := range ids {
args = append(args, id)
}
cmd := NewIntCmd(args...)
c.process(cmd)
return cmd
}
func (c *cmdable) XPending(stream, group string) *XPendingCmd {
cmd := NewXPendingCmd("xpending", stream, group)
c.process(cmd)
return cmd
}
type XPendingExtArgs struct {
Stream string
Group string
Start string
End string
Count int64
Consumer string
}
func (c *cmdable) XPendingExt(a *XPendingExtArgs) *XPendingExtCmd {
args := make([]interface{}, 0, 7)
args = append(args, "xpending", a.Stream, a.Group, a.Start, a.End, a.Count)
if a.Consumer != "" {
args = append(args, a.Consumer)
}
cmd := NewXPendingExtCmd(args...)
c.process(cmd)
return cmd
}
type XClaimArgs struct {
Stream string
Group string
Consumer string
MinIdle time.Duration
Messages []string
}
func (c *cmdable) XClaim(a *XClaimArgs) *XMessageSliceCmd {
args := xClaimArgs(a)
cmd := NewXMessageSliceCmd(args...)
c.process(cmd)
return cmd
}
func (c *cmdable) XClaimJustID(a *XClaimArgs) *StringSliceCmd {
args := xClaimArgs(a)
args = append(args, "justid")
cmd := NewStringSliceCmd(args...)
c.process(cmd)
return cmd
}
func xClaimArgs(a *XClaimArgs) []interface{} {
args := make([]interface{}, 0, 4+len(a.Messages))
args = append(args,
"xclaim",
a.Stream,
a.Group, a.Consumer,
int64(a.MinIdle/time.Millisecond))
for _, id := range a.Messages {
args = append(args, id)
}
return args
}
func (c *cmdable) XTrim(key string, maxLen int64) *IntCmd {
cmd := NewIntCmd("xtrim", key, "maxlen", maxLen)
c.process(cmd)
return cmd
}
func (c *cmdable) XTrimApprox(key string, maxLen int64) *IntCmd {
cmd := NewIntCmd("xtrim", key, "maxlen", "~", maxLen)
c.process(cmd)
return cmd
}
//------------------------------------------------------------------------------

206
commands_test.go
View File

@ -3042,37 +3042,54 @@ var _ = Describe("Commands", func() {
})
Describe("streams", func() {
createStream := func() {
id, err := client.XAdd("stream", "1-0", map[string]interface{}{
"uno": "un",
BeforeEach(func() {
id, err := client.XAdd(&redis.XAddArgs{
Stream: "stream",
ID: "1-0",
Values: map[string]interface{}{"uno": "un"},
}).Result()
Expect(err).NotTo(HaveOccurred())
Expect(id).To(Equal("1-0"))
id, err = client.XAdd("stream", "2-0", map[string]interface{}{
"dos": "deux",
id, err = client.XAdd(&redis.XAddArgs{
Stream: "stream",
ID: "2-0",
Values: map[string]interface{}{"dos": "deux"},
}).Result()
Expect(err).NotTo(HaveOccurred())
Expect(id).To(Equal("2-0"))
id, err = client.XAdd("stream", "3-0", map[string]interface{}{
"tres": "troix",
id, err = client.XAdd(&redis.XAddArgs{
Stream: "stream",
ID: "3-0",
Values: map[string]interface{}{"tres": "troix"},
}).Result()
Expect(err).NotTo(HaveOccurred())
Expect(id).To(Equal("3-0"))
}
})
It("should XTrim", func() {
n, err := client.XTrim("stream", 0).Result()
Expect(err).NotTo(HaveOccurred())
Expect(n).To(Equal(int64(3)))
})
It("should XTrimApprox", func() {
n, err := client.XTrimApprox("stream", 0).Result()
Expect(err).NotTo(HaveOccurred())
Expect(n).To(Equal(int64(3)))
})
It("should XAdd", func() {
createStream()
id, err := client.XAdd("stream", "*", map[string]interface{}{
"quatro": "quatre",
id, err := client.XAdd(&redis.XAddArgs{
Stream: "stream",
Values: map[string]interface{}{"quatro": "quatre"},
}).Result()
Expect(err).NotTo(HaveOccurred())
vals, err := client.XRange("stream", "-", "+").Result()
Expect(err).NotTo(HaveOccurred())
Expect(vals).To(Equal([]*redis.XMessage{
Expect(vals).To(Equal([]redis.XMessage{
{ID: "1-0", Values: map[string]interface{}{"uno": "un"}},
{ID: "2-0", Values: map[string]interface{}{"dos": "deux"}},
{ID: "3-0", Values: map[string]interface{}{"tres": "troix"}},
@ -3080,10 +3097,8 @@ var _ = Describe("Commands", func() {
}))
})
It("should XAddExt", func() {
createStream()
id, err := client.XAddExt(&redis.XAddExt{
It("should XAdd with MaxLen", func() {
id, err := client.XAdd(&redis.XAddArgs{
Stream: "stream",
MaxLen: 1,
Values: map[string]interface{}{"quatro": "quatre"},
@ -3092,25 +3107,21 @@ var _ = Describe("Commands", func() {
vals, err := client.XRange("stream", "-", "+").Result()
Expect(err).NotTo(HaveOccurred())
Expect(vals).To(Equal([]*redis.XMessage{
Expect(vals).To(Equal([]redis.XMessage{
{ID: id, Values: map[string]interface{}{"quatro": "quatre"}},
}))
})
It("should XLen", func() {
createStream()
n, err := client.XLen("stream").Result()
Expect(err).NotTo(HaveOccurred())
Expect(n).To(Equal(int64(3)))
})
It("should XRange", func() {
createStream()
msgs, err := client.XRange("stream", "-", "+").Result()
Expect(err).NotTo(HaveOccurred())
Expect(msgs).To(Equal([]*redis.XMessage{
Expect(msgs).To(Equal([]redis.XMessage{
{ID: "1-0", Values: map[string]interface{}{"uno": "un"}},
{ID: "2-0", Values: map[string]interface{}{"dos": "deux"}},
{ID: "3-0", Values: map[string]interface{}{"tres": "troix"}},
@ -3118,48 +3129,44 @@ var _ = Describe("Commands", func() {
msgs, err = client.XRange("stream", "2", "+").Result()
Expect(err).NotTo(HaveOccurred())
Expect(msgs).To(Equal([]*redis.XMessage{
Expect(msgs).To(Equal([]redis.XMessage{
{ID: "2-0", Values: map[string]interface{}{"dos": "deux"}},
{ID: "3-0", Values: map[string]interface{}{"tres": "troix"}},
}))
msgs, err = client.XRange("stream", "-", "2").Result()
Expect(err).NotTo(HaveOccurred())
Expect(msgs).To(Equal([]*redis.XMessage{
Expect(msgs).To(Equal([]redis.XMessage{
{ID: "1-0", Values: map[string]interface{}{"uno": "un"}},
{ID: "2-0", Values: map[string]interface{}{"dos": "deux"}},
}))
})
It("should XRangeN", func() {
createStream()
msgs, err := client.XRangeN("stream", "-", "+", 2).Result()
Expect(err).NotTo(HaveOccurred())
Expect(msgs).To(Equal([]*redis.XMessage{
Expect(msgs).To(Equal([]redis.XMessage{
{ID: "1-0", Values: map[string]interface{}{"uno": "un"}},
{ID: "2-0", Values: map[string]interface{}{"dos": "deux"}},
}))
msgs, err = client.XRangeN("stream", "2", "+", 1).Result()
Expect(err).NotTo(HaveOccurred())
Expect(msgs).To(Equal([]*redis.XMessage{
Expect(msgs).To(Equal([]redis.XMessage{
{ID: "2-0", Values: map[string]interface{}{"dos": "deux"}},
}))
msgs, err = client.XRangeN("stream", "-", "2", 1).Result()
Expect(err).NotTo(HaveOccurred())
Expect(msgs).To(Equal([]*redis.XMessage{
Expect(msgs).To(Equal([]redis.XMessage{
{ID: "1-0", Values: map[string]interface{}{"uno": "un"}},
}))
})
It("should XRevRange", func() {
createStream()
msgs, err := client.XRevRange("stream", "+", "-").Result()
Expect(err).NotTo(HaveOccurred())
Expect(msgs).To(Equal([]*redis.XMessage{
Expect(msgs).To(Equal([]redis.XMessage{
{ID: "3-0", Values: map[string]interface{}{"tres": "troix"}},
{ID: "2-0", Values: map[string]interface{}{"dos": "deux"}},
{ID: "1-0", Values: map[string]interface{}{"uno": "un"}},
@ -3167,82 +3174,171 @@ var _ = Describe("Commands", func() {
msgs, err = client.XRevRange("stream", "+", "2").Result()
Expect(err).NotTo(HaveOccurred())
Expect(msgs).To(Equal([]*redis.XMessage{
Expect(msgs).To(Equal([]redis.XMessage{
{ID: "3-0", Values: map[string]interface{}{"tres": "troix"}},
{ID: "2-0", Values: map[string]interface{}{"dos": "deux"}},
}))
})
It("should XRevRangeN", func() {
createStream()
msgs, err := client.XRevRangeN("stream", "+", "-", 2).Result()
Expect(err).NotTo(HaveOccurred())
Expect(msgs).To(Equal([]*redis.XMessage{
Expect(msgs).To(Equal([]redis.XMessage{
{ID: "3-0", Values: map[string]interface{}{"tres": "troix"}},
{ID: "2-0", Values: map[string]interface{}{"dos": "deux"}},
}))
msgs, err = client.XRevRangeN("stream", "+", "2", 1).Result()
Expect(err).NotTo(HaveOccurred())
Expect(msgs).To(Equal([]*redis.XMessage{
Expect(msgs).To(Equal([]redis.XMessage{
{ID: "3-0", Values: map[string]interface{}{"tres": "troix"}},
}))
})
It("should XRead", func() {
createStream()
res, err := client.XRead("stream", "0").Result()
res, err := client.XReadStreams("stream", "0").Result()
Expect(err).NotTo(HaveOccurred())
Expect(res).To(Equal([]*redis.XStream{{
Expect(res).To(Equal([]redis.XStream{{
Stream: "stream",
Messages: []*redis.XMessage{
Messages: []redis.XMessage{
{ID: "1-0", Values: map[string]interface{}{"uno": "un"}},
{ID: "2-0", Values: map[string]interface{}{"dos": "deux"}},
{ID: "3-0", Values: map[string]interface{}{"tres": "troix"}},
}},
}))
_, err = client.XRead("stream", "3").Result()
_, err = client.XReadStreams("stream", "3").Result()
Expect(err).To(Equal(redis.Nil))
})
It("should XReadExt", func() {
createStream()
res, err := client.XReadExt(&redis.XReadExt{
It("should XRead", func() {
res, err := client.XRead(&redis.XReadArgs{
Streams: []string{"stream", "0"},
Count: 2,
Block: 100 * time.Millisecond,
}).Result()
Expect(err).NotTo(HaveOccurred())
Expect(res).To(Equal([]*redis.XStream{{
Expect(res).To(Equal([]redis.XStream{{
Stream: "stream",
Messages: []*redis.XMessage{
Messages: []redis.XMessage{
{ID: "1-0", Values: map[string]interface{}{"uno": "un"}},
{ID: "2-0", Values: map[string]interface{}{"dos": "deux"}},
}},
}))
_, err = client.XReadExt(&redis.XReadExt{
_, err = client.XRead(&redis.XReadArgs{
Streams: []string{"stream", "3"},
Count: 1,
Block: 100 * time.Millisecond,
}).Result()
Expect(err).To(Equal(redis.Nil))
})
Describe("group", func() {
BeforeEach(func() {
err := client.XGroupCreate("stream", "group", "0").Err()
Expect(err).NotTo(HaveOccurred())
res, err := client.XReadGroup(&redis.XReadGroupArgs{
Group: "group",
Consumer: "consumer",
Streams: []string{"stream", "0"},
}).Result()
Expect(res).To(Equal([]redis.XStream{{
Stream: "stream",
Messages: []redis.XMessage{
{ID: "1-0", Values: map[string]interface{}{"uno": "un"}},
{ID: "2-0", Values: map[string]interface{}{"dos": "deux"}},
{ID: "3-0", Values: map[string]interface{}{"tres": "troix"}},
}},
}))
})
AfterEach(func() {
n, err := client.XGroupDestroy("stream", "group").Result()
Expect(err).NotTo(HaveOccurred())
Expect(n).To(Equal(int64(1)))
})
It("should XPending", func() {
info, err := client.XPending("stream", "group").Result()
Expect(err).NotTo(HaveOccurred())
Expect(info).To(Equal(&redis.XPending{
Count: 3,
Lower: "1-0",
Higher: "3-0",
Consumers: map[string]int64{"consumer": 3},
}))
infoExt, err := client.XPendingExt(&redis.XPendingExtArgs{
Stream: "stream",
Group: "group",
Start: "-",
End: "+",
Count: 10,
Consumer: "consumer",
}).Result()
Expect(err).NotTo(HaveOccurred())
for i := range infoExt {
infoExt[i].Idle = 0
}
Expect(infoExt).To(Equal([]redis.XPendingExt{
{Id: "1-0", Consumer: "consumer", Idle: 0, RetryCount: 1},
{Id: "2-0", Consumer: "consumer", Idle: 0, RetryCount: 1},
{Id: "3-0", Consumer: "consumer", Idle: 0, RetryCount: 1},
}))
n, err := client.XGroupDelConsumer("stream", "group", "consumer").Result()
Expect(err).NotTo(HaveOccurred())
Expect(n).To(Equal(int64(3)))
})
It("should XClaim", func() {
msgs, err := client.XClaim(&redis.XClaimArgs{
Stream: "stream",
Group: "group",
Consumer: "consumer",
Messages: []string{"1-0", "2-0", "3-0"},
}).Result()
Expect(err).NotTo(HaveOccurred())
Expect(msgs).To(Equal([]redis.XMessage{{
ID: "1-0",
Values: map[string]interface{}{"uno": "un"},
}, {
ID: "2-0",
Values: map[string]interface{}{"dos": "deux"},
}, {
ID: "3-0",
Values: map[string]interface{}{"tres": "troix"},
}}))
ids, err := client.XClaimJustID(&redis.XClaimArgs{
Stream: "stream",
Group: "group",
Consumer: "consumer",
Messages: []string{"1-0", "2-0", "3-0"},
}).Result()
Expect(err).NotTo(HaveOccurred())
Expect(ids).To(Equal([]string{"1-0", "2-0", "3-0"}))
})
It("should XAck", func() {
n, err := client.XAck("stream", "group", "1-0", "2-0", "4-0").Result()
Expect(err).NotTo(HaveOccurred())
Expect(n).To(Equal(int64(2)))
})
})
})
Describe("Geo add and radius search", func() {
BeforeEach(func() {
geoAdd := client.GeoAdd(
n, err := client.GeoAdd(
"Sicily",
&redis.GeoLocation{Longitude: 13.361389, Latitude: 38.115556, Name: "Palermo"},
&redis.GeoLocation{Longitude: 15.087269, Latitude: 37.502669, Name: "Catania"},
)
Expect(geoAdd.Err()).NotTo(HaveOccurred())
Expect(geoAdd.Val()).To(Equal(int64(2)))
).Result()
Expect(err).NotTo(HaveOccurred())
Expect(n).To(Equal(int64(2)))
})
It("should not add same geo location", func() {

394
parser.go
View File

@ -1,394 +0,0 @@
package redis
import (
"fmt"
"net"
"strconv"
"time"
"github.com/go-redis/redis/internal/proto"
)
// Implements proto.MultiBulkParse
func sliceParser(rd *proto.Reader, n int64) (interface{}, error) {
vals := make([]interface{}, 0, n)
for i := int64(0); i < n; i++ {
v, err := rd.ReadReply(sliceParser)
if err != nil {
if err == Nil {
vals = append(vals, nil)
continue
}
if err, ok := err.(proto.RedisError); ok {
vals = append(vals, err)
continue
}
return nil, err
}
switch v := v.(type) {
case []byte:
vals = append(vals, string(v))
default:
vals = append(vals, v)
}
}
return vals, nil
}
// Implements proto.MultiBulkParse
func boolSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
bools := make([]bool, 0, n)
for i := int64(0); i < n; i++ {
n, err := rd.ReadIntReply()
if err != nil {
return nil, err
}
bools = append(bools, n == 1)
}
return bools, nil
}
// Implements proto.MultiBulkParse
func stringSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
ss := make([]string, 0, n)
for i := int64(0); i < n; i++ {
s, err := rd.ReadStringReply()
if err == Nil {
ss = append(ss, "")
} else if err != nil {
return nil, err
} else {
ss = append(ss, s)
}
}
return ss, nil
}
// Implements proto.MultiBulkParse
func stringStringMapParser(rd *proto.Reader, n int64) (interface{}, error) {
m := make(map[string]string, n/2)
for i := int64(0); i < n; i += 2 {
key, err := rd.ReadStringReply()
if err != nil {
return nil, err
}
value, err := rd.ReadStringReply()
if err != nil {
return nil, err
}
m[key] = value
}
return m, nil
}
// Implements proto.MultiBulkParse
func stringIntMapParser(rd *proto.Reader, n int64) (interface{}, error) {
m := make(map[string]int64, n/2)
for i := int64(0); i < n; i += 2 {
key, err := rd.ReadStringReply()
if err != nil {
return nil, err
}
n, err := rd.ReadIntReply()
if err != nil {
return nil, err
}
m[key] = n
}
return m, nil
}
// Implements proto.MultiBulkParse
func stringStructMapParser(rd *proto.Reader, n int64) (interface{}, error) {
m := make(map[string]struct{}, n)
for i := int64(0); i < n; i++ {
key, err := rd.ReadStringReply()
if err != nil {
return nil, err
}
m[key] = struct{}{}
}
return m, nil
}
// Implements proto.MultiBulkParse
func zSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
zz := make([]Z, n/2)
for i := int64(0); i < n; i += 2 {
var err error
z := &zz[i/2]
z.Member, err = rd.ReadStringReply()
if err != nil {
return nil, err
}
z.Score, err = rd.ReadFloatReply()
if err != nil {
return nil, err
}
}
return zz, nil
}
// Implements proto.MultiBulkParse
func clusterSlotsParser(rd *proto.Reader, n int64) (interface{}, error) {
slots := make([]ClusterSlot, n)
for i := 0; i < len(slots); 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.ReadStringReply()
if err != nil {
return nil, err
}
port, err := rd.ReadIntReply()
if err != nil {
return nil, err
}
nodes[j].Addr = net.JoinHostPort(ip, strconv.FormatInt(port, 10))
if n == 3 {
id, err := rd.ReadStringReply()
if err != nil {
return nil, err
}
nodes[j].Id = id
}
}
slots[i] = ClusterSlot{
Start: int(start),
End: int(end),
Nodes: nodes,
}
}
return slots, 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.ReadStringReply()
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
}
}
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 []byte:
locs = append(locs, GeoLocation{
Name: string(vv),
})
case *GeoLocation:
locs = append(locs, *vv)
default:
return nil, fmt.Errorf("got %T, expected string or *GeoLocation", v)
}
}
return locs, nil
}
}
func geoPosParser(rd *proto.Reader, n int64) (interface{}, error) {
var pos GeoPos
var err error
pos.Longitude, err = rd.ReadFloatReply()
if err != nil {
return nil, err
}
pos.Latitude, err = rd.ReadFloatReply()
if err != nil {
return nil, err
}
return &pos, nil
}
func geoPosSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
positions := make([]*GeoPos, 0, n)
for i := int64(0); i < n; i++ {
v, err := rd.ReadReply(geoPosParser)
if err != nil {
if err == Nil {
positions = append(positions, nil)
continue
}
return nil, err
}
switch v := v.(type) {
case *GeoPos:
positions = append(positions, v)
default:
return nil, fmt.Errorf("got %T, expected *GeoPos", v)
}
}
return positions, nil
}
func commandInfoParser(rd *proto.Reader, n int64) (interface{}, error) {
var cmd CommandInfo
var err error
if n != 6 {
return nil, fmt.Errorf("redis: got %d elements in COMMAND reply, wanted 6", n)
}
cmd.Name, err = rd.ReadStringReply()
if err != nil {
return nil, err
}
arity, err := rd.ReadIntReply()
if err != nil {
return nil, err
}
cmd.Arity = int8(arity)
flags, err := rd.ReadReply(stringSliceParser)
if err != nil {
return nil, err
}
cmd.Flags = flags.([]string)
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
}
}
return &cmd, nil
}
// Implements proto.MultiBulkParse
func commandInfoSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
m := 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)
m[vv.Name] = vv
}
return m, nil
}
// Implements proto.MultiBulkParse
func timeParser(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
}
return time.Unix(sec, microsec*1000), nil
}