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Refactor reply parser.

This commit is contained in:
Vladimir Mihailenco 2015-10-07 17:09:20 +03:00
parent 2d37474474
commit b23b9b7727
9 changed files with 383 additions and 275 deletions
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2
cluster_pipeline.go
View File

@ -100,7 +100,7 @@ func (pipe *ClusterPipeline) execClusterCmds(
var firstCmdErr error
for i, cmd := range cmds {
err := cmd.parseReply(cn)
err := cmd.readReply(cn)
if err == nil {
continue
}

180
command.go
View File

@ -28,7 +28,7 @@ var (
type Cmder interface {
args() []interface{}
parseReply(*conn) error
readReply(*conn) error
setErr(error)
reset()
@ -152,14 +152,20 @@ func (cmd *Cmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *Cmd) parseReply(cn *conn) error {
cmd.val, cmd.err = parseReply(cn, parseSlice)
// Convert to string to preserve old behaviour.
// TODO: remove in v4
if v, ok := cmd.val.([]byte); ok {
cmd.val = string(v)
func (cmd *Cmd) readReply(cn *conn) error {
val, err := readReply(cn, sliceParser)
if err != nil {
cmd.err = err
return cmd.err
}
return cmd.err
if v, ok := val.([]byte); ok {
// Convert to string to preserve old behaviour.
// TODO: remove in v4
cmd.val = string(v)
} else {
cmd.val = val
}
return nil
}
//------------------------------------------------------------------------------
@ -191,8 +197,8 @@ func (cmd *SliceCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *SliceCmd) parseReply(cn *conn) error {
v, err := parseReply(cn, parseSlice)
func (cmd *SliceCmd) readReply(cn *conn) error {
v, err := readReply(cn, sliceParser)
if err != nil {
cmd.err = err
return err
@ -234,8 +240,8 @@ func (cmd *StatusCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *StatusCmd) parseReply(cn *conn) error {
v, err := parseReply(cn, nil)
func (cmd *StatusCmd) readReply(cn *conn) error {
v, err := readReply(cn, nil)
if err != nil {
cmd.err = err
return err
@ -273,8 +279,8 @@ func (cmd *IntCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *IntCmd) parseReply(cn *conn) error {
v, err := parseReply(cn, nil)
func (cmd *IntCmd) readReply(cn *conn) error {
v, err := readReply(cn, nil)
if err != nil {
cmd.err = err
return err
@ -316,8 +322,8 @@ func (cmd *DurationCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *DurationCmd) parseReply(cn *conn) error {
v, err := parseReply(cn, nil)
func (cmd *DurationCmd) readReply(cn *conn) error {
v, err := readReply(cn, nil)
if err != nil {
cmd.err = err
return err
@ -357,8 +363,8 @@ func (cmd *BoolCmd) String() string {
var ok = []byte("OK")
func (cmd *BoolCmd) parseReply(cn *conn) error {
v, err := parseReply(cn, nil)
func (cmd *BoolCmd) readReply(cn *conn) error {
v, err := readReply(cn, nil)
// `SET key value NX` returns nil when key already exists, which
// is inconsistent with `SETNX key value`.
// TODO: is this okay?
@ -443,8 +449,8 @@ func (cmd *StringCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *StringCmd) parseReply(cn *conn) error {
v, err := parseReply(cn, nil)
func (cmd *StringCmd) readReply(cn *conn) error {
v, err := readReply(cn, nil)
if err != nil {
cmd.err = err
return err
@ -482,8 +488,8 @@ func (cmd *FloatCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *FloatCmd) parseReply(cn *conn) error {
v, err := parseReply(cn, nil)
func (cmd *FloatCmd) readReply(cn *conn) error {
v, err := readReply(cn, nil)
if err != nil {
cmd.err = err
return err
@ -522,8 +528,8 @@ func (cmd *StringSliceCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *StringSliceCmd) parseReply(cn *conn) error {
v, err := parseReply(cn, parseStringSlice)
func (cmd *StringSliceCmd) readReply(cn *conn) error {
v, err := readReply(cn, stringSliceParser)
if err != nil {
cmd.err = err
return err
@ -561,8 +567,8 @@ func (cmd *BoolSliceCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *BoolSliceCmd) parseReply(cn *conn) error {
v, err := parseReply(cn, parseBoolSlice)
func (cmd *BoolSliceCmd) readReply(cn *conn) error {
v, err := readReply(cn, boolSliceParser)
if err != nil {
cmd.err = err
return err
@ -600,8 +606,8 @@ func (cmd *StringStringMapCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *StringStringMapCmd) parseReply(cn *conn) error {
v, err := parseReply(cn, parseStringStringMap)
func (cmd *StringStringMapCmd) readReply(cn *conn) error {
v, err := readReply(cn, stringStringMapParser)
if err != nil {
cmd.err = err
return err
@ -639,8 +645,8 @@ func (cmd *StringIntMapCmd) reset() {
cmd.err = nil
}
func (cmd *StringIntMapCmd) parseReply(cn *conn) error {
v, err := parseReply(cn, parseStringIntMap)
func (cmd *StringIntMapCmd) readReply(cn *conn) error {
v, err := readReply(cn, stringIntMapParser)
if err != nil {
cmd.err = err
return err
@ -678,8 +684,8 @@ func (cmd *ZSliceCmd) String() string {
return cmdString(cmd, cmd.val)
}
func (cmd *ZSliceCmd) parseReply(cn *conn) error {
v, err := parseReply(cn, parseZSlice)
func (cmd *ZSliceCmd) readReply(cn *conn) error {
v, err := readReply(cn, zSliceParser)
if err != nil {
cmd.err = err
return err
@ -719,8 +725,8 @@ func (cmd *ScanCmd) String() string {
return cmdString(cmd, cmd.keys)
}
func (cmd *ScanCmd) parseReply(cn *conn) error {
vi, err := parseReply(cn, parseSlice)
func (cmd *ScanCmd) readReply(cn *conn) error {
vi, err := readReply(cn, sliceParser)
if err != nil {
cmd.err = err
return cmd.err
@ -743,8 +749,9 @@ func (cmd *ScanCmd) parseReply(cn *conn) error {
//------------------------------------------------------------------------------
type ClusterSlotInfo struct {
Start, End int
Addrs []string
Start int
End int
Addrs []string
}
type ClusterSlotCmd struct {
@ -774,8 +781,8 @@ func (cmd *ClusterSlotCmd) reset() {
cmd.err = nil
}
func (cmd *ClusterSlotCmd) parseReply(cn *conn) error {
v, err := parseReply(cn, parseClusterSlotInfoSlice)
func (cmd *ClusterSlotCmd) readReply(cn *conn) error {
v, err := readReply(cn, clusterSlotInfoSliceParser)
if err != nil {
cmd.err = err
return err
@ -786,99 +793,62 @@ func (cmd *ClusterSlotCmd) parseReply(cn *conn) error {
//------------------------------------------------------------------------------
// Location type for GEO operations in Redis
// GeoLocation is used with GeoAdd to add geospatial location.
type GeoLocation struct {
Name string
Name string
Longitude, Latitude, Distance float64
GeoHash int64
GeoHash int64
}
type GeoCmd struct {
// GeoRadiusQuery is used with GeoRadius to query geospatial index.
type GeoRadiusQuery struct {
Key string
Longitude float64
Latitude float64
Radius float64
// Can be m, km, ft, or mi. Default is km.
Unit string
WithCoordinates bool
WithDistance bool
WithGeoHash bool
Count int
// Can be ASC or DESC. Default is no sort order.
Sort string
}
type GeoLocationCmd struct {
baseCmd
locations []GeoLocation
}
// Query type for geo radius
type GeoRadiusQuery struct {
Key string
Longitude, Latitude, Radius float64
// Unit default to km when nil
Unit string
WithCoordinates, WithDistance, WithGeoHash bool
// Count default to 0 and ignored limit.
Count int
// Sort default to unsorted, ASC or DESC otherwise
Sort string
func NewGeoLocationCmd(args ...interface{}) *GeoLocationCmd {
return &GeoLocationCmd{baseCmd: baseCmd{_args: args, _clusterKeyPos: 1}}
}
func NewGeoCmd(args ...interface{}) *GeoCmd {
return &GeoCmd{baseCmd: baseCmd{_args: args, _clusterKeyPos: 1}}
}
func (cmd *GeoCmd) reset() {
func (cmd *GeoLocationCmd) reset() {
cmd.locations = nil
cmd.err = nil
}
func (cmd *GeoCmd) Val() ([]GeoLocation) {
func (cmd *GeoLocationCmd) Val() []GeoLocation {
return cmd.locations
}
func (cmd *GeoCmd) Result() ([]GeoLocation, error) {
func (cmd *GeoLocationCmd) Result() ([]GeoLocation, error) {
return cmd.locations, cmd.err
}
func (cmd *GeoCmd) String() string {
func (cmd *GeoLocationCmd) String() string {
return cmdString(cmd, cmd.locations)
}
func (cmd *GeoCmd) parseReply(cn *conn) error {
vi, err := parseReply(cn, parseSlice)
func (cmd *GeoLocationCmd) readReply(cn *conn) error {
reply, err := readReply(cn, geoLocationSliceParser)
if err != nil {
cmd.err = err
return cmd.err
}
v := vi.([]interface{})
if len(v) == 0 {
return nil
}
if _, ok := v[0].(string); ok { // Location names only (single level string array)
for _, keyi := range v {
cmd.locations = append(cmd.locations, GeoLocation{Name: keyi.(string)})
}
} else { // Full location details (nested arrays)
for _, keyi := range v {
tmpLocation := GeoLocation{}
keyiface := keyi.([]interface{})
for _, subKeyi := range keyiface {
if strVal, ok := subKeyi.(string); ok {
if len(tmpLocation.Name) == 0 {
tmpLocation.Name = strVal
} else {
tmpLocation.Distance, err = strconv.ParseFloat(strVal, 64)
if err != nil {
return err
}
}
} else if intVal, ok := subKeyi.(int64); ok {
tmpLocation.GeoHash = intVal
} else if ifcVal, ok := subKeyi.([]interface{}); ok {
tmpLocation.Longitude, err = strconv.ParseFloat(ifcVal[0].(string), 64)
if err != nil {
return err
}
tmpLocation.Latitude, err = strconv.ParseFloat(ifcVal[1].(string), 64)
if err != nil {
return err
}
}
}
cmd.locations = append(cmd.locations, tmpLocation)
}
return err
}
cmd.locations = reply.([]GeoLocation)
return nil
}

39
commands.go
View File

@ -1688,25 +1688,8 @@ func (c *commandable) GeoAdd(key string, geoLocation ...*GeoLocation) *IntCmd {
return cmd
}
func (c *commandable) GeoRadius(query *GeoRadiusQuery) *GeoCmd {
var options, optionsCtr int
if query.WithCoordinates {
options++
}
if query.WithDistance {
options++
}
if query.WithGeoHash {
options++
}
if query.Count > 0 {
options += 2
}
if query.Sort != "" {
options++
}
args := make([]interface{}, 6 + options)
func (c *commandable) GeoRadius(query *GeoRadiusQuery) *GeoLocationCmd {
args := make([]interface{}, 6)
args[0] = "GEORADIUS"
args[1] = query.Key
args[2] = query.Longitude
@ -1718,28 +1701,22 @@ func (c *commandable) GeoRadius(query *GeoRadiusQuery) *GeoCmd {
args[5] = "km"
}
if query.WithCoordinates {
args[6+optionsCtr] = "WITHCOORD"
optionsCtr++
args = append(args, "WITHCOORD")
}
if query.WithDistance {
args[6+optionsCtr] = "WITHDIST"
optionsCtr++
args = append(args, "WITHDIST")
}
if query.WithGeoHash {
args[6+optionsCtr] = "WITHHASH"
optionsCtr++
args = append(args, "WITHHASH")
}
if query.Count > 0 {
args[6+optionsCtr] = "COUNT"
optionsCtr++
args[6+optionsCtr] = query.Count
optionsCtr++
args = append(args, "COUNT", query.Count)
}
if query.Sort != "" {
args[6+optionsCtr] = query.Sort
args = append(args, query.Sort)
}
cmd := NewGeoCmd(args...)
cmd := NewGeoLocationCmd(args...)
c.Process(cmd)
return cmd
}

4
multi.go
View File

@ -116,7 +116,7 @@ func (c *Multi) execCmds(cn *conn, cmds []Cmder) error {
// Parse queued replies.
for i := 0; i < cmdsLen; i++ {
if err := statusCmd.parseReply(cn); err != nil {
if err := statusCmd.readReply(cn); err != nil {
setCmdsErr(cmds[1:len(cmds)-1], err)
return err
}
@ -144,7 +144,7 @@ func (c *Multi) execCmds(cn *conn, cmds []Cmder) error {
// Loop starts from 1 to omit MULTI cmd.
for i := 1; i < cmdsLen; i++ {
cmd := cmds[i]
if err := cmd.parseReply(cn); err != nil {
if err := cmd.readReply(cn); err != nil {
if firstCmdErr == nil {
firstCmdErr = err
}

423
parser.go
View File

@ -8,6 +8,14 @@ import (
"strconv"
)
const (
errorReply = '-'
statusReply = '+'
intReply = ':'
stringReply = '$'
arrayReply = '*'
)
type multiBulkParser func(cn *conn, n int64) (interface{}, error)
var (
@ -239,57 +247,157 @@ func readN(cn *conn, n int) ([]byte, error) {
//------------------------------------------------------------------------------
func parseReply(cn *conn, p multiBulkParser) (interface{}, error) {
func parseErrorReply(cn *conn, line []byte) error {
return errorf(string(line[1:]))
}
func parseIntReply(cn *conn, line []byte) (int64, error) {
n, err := strconv.ParseInt(bytesToString(line[1:]), 10, 64)
if err != nil {
return 0, err
}
return n, nil
}
func readIntReply(cn *conn) (int64, error) {
line, err := readLine(cn)
if err != nil {
return 0, err
}
switch line[0] {
case errorReply:
return 0, parseErrorReply(cn, line)
case intReply:
return parseIntReply(cn, line)
default:
return 0, fmt.Errorf("readIntReply: can't parse %.100q", line)
}
}
func parseBytesReply(cn *conn, line []byte) ([]byte, error) {
if len(line) == 3 && line[1] == '-' && line[2] == '1' {
return nil, Nil
}
replyLen, err := strconv.Atoi(bytesToString(line[1:]))
if err != nil {
return nil, err
}
b, err := readN(cn, replyLen+2)
if err != nil {
return nil, err
}
return b[:replyLen], nil
}
func readBytesReply(cn *conn) ([]byte, error) {
line, err := readLine(cn)
if err != nil {
return nil, err
}
switch line[0] {
case errorReply:
return nil, parseErrorReply(cn, line)
case stringReply:
return parseBytesReply(cn, line)
default:
return nil, fmt.Errorf("readBytesReply: can't parse %.100q", line)
}
}
func readStringReply(cn *conn) (string, error) {
b, err := readBytesReply(cn)
if err != nil {
return "", err
}
return string(b), nil
}
func readFloatReply(cn *conn) (float64, error) {
b, err := readBytesReply(cn)
if err != nil {
return 0, err
}
return strconv.ParseFloat(bytesToString(b), 64)
}
func parseArrayHeader(cn *conn, line []byte) (int64, error) {
if len(line) == 3 && line[1] == '-' && line[2] == '1' {
return 0, Nil
}
n, err := strconv.ParseInt(bytesToString(line[1:]), 10, 64)
if err != nil {
return 0, err
}
return n, nil
}
func parseArrayReply(cn *conn, p multiBulkParser, line []byte) (interface{}, error) {
n, err := parseArrayHeader(cn, line)
if err != nil {
return nil, err
}
return p(cn, n)
}
func readArrayHeader(cn *conn) (int64, error) {
line, err := readLine(cn)
if err != nil {
return 0, err
}
switch line[0] {
case errorReply:
return 0, parseErrorReply(cn, line)
case arrayReply:
return parseArrayHeader(cn, line)
default:
return 0, fmt.Errorf("readArrayReply: can't parse %.100q", line)
}
}
func readArrayReply(cn *conn, p multiBulkParser) (interface{}, error) {
line, err := readLine(cn)
if err != nil {
return nil, err
}
switch line[0] {
case errorReply:
return nil, parseErrorReply(cn, line)
case arrayReply:
return parseArrayReply(cn, p, line)
default:
return nil, fmt.Errorf("readArrayReply: can't parse %.100q", line)
}
}
func readReply(cn *conn, p multiBulkParser) (interface{}, error) {
line, err := readLine(cn)
if err != nil {
return nil, err
}
switch line[0] {
case '-':
return nil, errorf(string(line[1:]))
case '+':
case errorReply:
return nil, parseErrorReply(cn, line)
case statusReply:
return line[1:], nil
case ':':
v, err := strconv.ParseInt(bytesToString(line[1:]), 10, 64)
if err != nil {
return nil, err
}
return v, nil
case '$':
if len(line) == 3 && line[1] == '-' && line[2] == '1' {
return nil, Nil
}
replyLen, err := strconv.Atoi(bytesToString(line[1:]))
if err != nil {
return nil, err
}
b, err := readN(cn, replyLen+2)
if err != nil {
return nil, err
}
return b[:replyLen], nil
case '*':
if len(line) == 3 && line[1] == '-' && line[2] == '1' {
return nil, Nil
}
repliesNum, err := strconv.ParseInt(bytesToString(line[1:]), 10, 64)
if err != nil {
return nil, err
}
return p(cn, repliesNum)
case intReply:
return parseIntReply(cn, line)
case stringReply:
return parseBytesReply(cn, line)
case arrayReply:
return parseArrayReply(cn, p, line)
}
return nil, fmt.Errorf("redis: can't parse %q", line)
}
func parseSlice(cn *conn, n int64) (interface{}, error) {
func sliceParser(cn *conn, n int64) (interface{}, error) {
vals := make([]interface{}, 0, n)
for i := int64(0); i < n; i++ {
v, err := parseReply(cn, parseSlice)
v, err := readReply(cn, sliceParser)
if err == Nil {
vals = append(vals, nil)
} else if err != nil {
@ -306,171 +414,224 @@ func parseSlice(cn *conn, n int64) (interface{}, error) {
return vals, nil
}
func parseStringSlice(cn *conn, n int64) (interface{}, error) {
vals := make([]string, 0, n)
func intSliceParser(cn *conn, n int64) (interface{}, error) {
ints := make([]int64, 0, n)
for i := int64(0); i < n; i++ {
viface, err := parseReply(cn, nil)
n, err := readIntReply(cn)
if err != nil {
return nil, err
}
v, ok := viface.([]byte)
if !ok {
return nil, fmt.Errorf("got %T, expected string", viface)
}
vals = append(vals, string(v))
ints = append(ints, n)
}
return vals, nil
return ints, nil
}
func parseBoolSlice(cn *conn, n int64) (interface{}, error) {
vals := make([]bool, 0, n)
func boolSliceParser(cn *conn, n int64) (interface{}, error) {
bools := make([]bool, 0, n)
for i := int64(0); i < n; i++ {
viface, err := parseReply(cn, nil)
n, err := readIntReply(cn)
if err != nil {
return nil, err
}
v, ok := viface.(int64)
if !ok {
return nil, fmt.Errorf("got %T, expected int64", viface)
}
vals = append(vals, v == 1)
bools = append(bools, n == 1)
}
return vals, nil
return bools, nil
}
func parseStringStringMap(cn *conn, n int64) (interface{}, error) {
func stringSliceParser(cn *conn, n int64) (interface{}, error) {
ss := make([]string, 0, n)
for i := int64(0); i < n; i++ {
s, err := readStringReply(cn)
if err != nil {
return nil, err
}
ss = append(ss, s)
}
return ss, nil
}
func floatSliceParser(cn *conn, n int64) (interface{}, error) {
nn := make([]float64, 0, n)
for i := int64(0); i < n; i++ {
n, err := readFloatReply(cn)
if err != nil {
return nil, err
}
nn = append(nn, n)
}
return nn, nil
}
func stringStringMapParser(cn *conn, n int64) (interface{}, error) {
m := make(map[string]string, n/2)
for i := int64(0); i < n; i += 2 {
keyIface, err := parseReply(cn, nil)
key, err := readStringReply(cn)
if err != nil {
return nil, err
}
keyBytes, ok := keyIface.([]byte)
if !ok {
return nil, fmt.Errorf("got %T, expected []byte", keyIface)
}
key := string(keyBytes)
valueIface, err := parseReply(cn, nil)
value, err := readStringReply(cn)
if err != nil {
return nil, err
}
valueBytes, ok := valueIface.([]byte)
if !ok {
return nil, fmt.Errorf("got %T, expected []byte", valueIface)
}
m[key] = string(valueBytes)
m[key] = value
}
return m, nil
}
func parseStringIntMap(cn *conn, n int64) (interface{}, error) {
func stringIntMapParser(cn *conn, n int64) (interface{}, error) {
m := make(map[string]int64, n/2)
for i := int64(0); i < n; i += 2 {
keyiface, err := parseReply(cn, nil)
key, err := readStringReply(cn)
if err != nil {
return nil, err
}
key, ok := keyiface.([]byte)
if !ok {
return nil, fmt.Errorf("got %T, expected string", keyiface)
}
valueiface, err := parseReply(cn, nil)
n, err := readIntReply(cn)
if err != nil {
return nil, err
}
switch value := valueiface.(type) {
case int64:
m[string(key)] = value
case string:
m[string(key)], err = strconv.ParseInt(value, 10, 64)
if err != nil {
return nil, fmt.Errorf("got %v, expected number", value)
}
default:
return nil, fmt.Errorf("got %T, expected number or string", valueiface)
}
m[key] = n
}
return m, nil
}
func parseZSlice(cn *conn, n int64) (interface{}, error) {
func zSliceParser(cn *conn, n int64) (interface{}, error) {
zz := make([]Z, n/2)
for i := int64(0); i < n; i += 2 {
var err error
z := &zz[i/2]
memberiface, err := parseReply(cn, nil)
z.Member, err = readStringReply(cn)
if err != nil {
return nil, err
}
member, ok := memberiface.([]byte)
if !ok {
return nil, fmt.Errorf("got %T, expected string", memberiface)
}
z.Member = string(member)
scoreiface, err := parseReply(cn, nil)
z.Score, err = readFloatReply(cn)
if err != nil {
return nil, err
}
scoreb, ok := scoreiface.([]byte)
if !ok {
return nil, fmt.Errorf("got %T, expected string", scoreiface)
}
score, err := strconv.ParseFloat(bytesToString(scoreb), 64)
if err != nil {
return nil, err
}
z.Score = score
}
return zz, nil
}
func parseClusterSlotInfoSlice(cn *conn, n int64) (interface{}, error) {
func clusterSlotInfoSliceParser(cn *conn, n int64) (interface{}, error) {
infos := make([]ClusterSlotInfo, 0, n)
for i := int64(0); i < n; i++ {
viface, err := parseReply(cn, parseSlice)
n, err := readArrayHeader(cn)
if err != nil {
return nil, err
}
if n < 2 {
return nil, fmt.Errorf("got %d elements in cluster info, expected at least 2", n)
}
start, err := readIntReply(cn)
if err != nil {
return nil, err
}
item, ok := viface.([]interface{})
if !ok {
return nil, fmt.Errorf("got %T, expected []interface{}", viface)
} else if len(item) < 3 {
return nil, fmt.Errorf("got %v, expected {int64, int64, string...}", item)
end, err := readIntReply(cn)
if err != nil {
return nil, err
}
start, ok := item[0].(int64)
if !ok || start < 0 || start > hashSlots {
return nil, fmt.Errorf("got %v, expected {int64, int64, string...}", item)
}
end, ok := item[1].(int64)
if !ok || end < 0 || end > hashSlots {
return nil, fmt.Errorf("got %v, expected {int64, int64, string...}", item)
addrsn := n - 2
info := ClusterSlotInfo{
Start: int(start),
End: int(end),
Addrs: make([]string, addrsn),
}
info := ClusterSlotInfo{int(start), int(end), make([]string, len(item)-2)}
for n, ipair := range item[2:] {
pair, ok := ipair.([]interface{})
if !ok || len(pair) != 2 {
return nil, fmt.Errorf("got %v, expected []interface{host, port}", viface)
for i := int64(0); i < addrsn; i++ {
n, err := readArrayHeader(cn)
if err != nil {
return nil, err
}
if n != 2 {
return nil, fmt.Errorf("got %d elements in cluster info address, expected 2", n)
}
ip, ok := pair[0].(string)
if !ok || len(ip) < 1 {
return nil, fmt.Errorf("got %v, expected IP PORT pair", pair)
}
port, ok := pair[1].(int64)
if !ok || port < 1 {
return nil, fmt.Errorf("got %v, expected IP PORT pair", pair)
ip, err := readStringReply(cn)
if err != nil {
return nil, err
}
info.Addrs[n] = net.JoinHostPort(ip, strconv.FormatInt(port, 10))
port, err := readIntReply(cn)
if err != nil {
return nil, err
}
info.Addrs[i] = net.JoinHostPort(ip, strconv.FormatInt(port, 10))
}
infos = append(infos, info)
}
return infos, nil
}
func geoLocationParser(cn *conn, n int64) (interface{}, error) {
loc := &GeoLocation{}
var err error
loc.Name, err = readStringReply(cn)
if err != nil {
return nil, err
}
if n >= 2 {
loc.Distance, err = readFloatReply(cn)
if err != nil {
return nil, err
}
}
if n >= 3 {
loc.GeoHash, err = readIntReply(cn)
if err != nil {
return nil, err
}
}
if n >= 4 {
n, err := readArrayHeader(cn)
if err != nil {
return nil, err
}
if n != 2 {
return nil, fmt.Errorf("got %d coordinates, expected 2", n)
}
loc.Longitude, err = readFloatReply(cn)
if err != nil {
return nil, err
}
loc.Latitude, err = readFloatReply(cn)
if err != nil {
return nil, err
}
}
return loc, nil
}
func geoLocationSliceParser(cn *conn, n int64) (interface{}, error) {
locs := make([]GeoLocation, 0, n)
for i := int64(0); i < n; i++ {
v, err := readReply(cn, geoLocationParser)
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
}

4
parser_test.go
View File

@ -23,7 +23,7 @@ func BenchmarkParseReplyString(b *testing.B) {
}
func BenchmarkParseReplySlice(b *testing.B) {
benchmarkParseReply(b, "*2\r\n$5\r\nhello\r\n$5\r\nworld\r\n", parseSlice, false)
benchmarkParseReply(b, "*2\r\n$5\r\nhello\r\n$5\r\nworld\r\n", sliceParser, false)
}
func benchmarkParseReply(b *testing.B, reply string, p multiBulkParser, wanterr bool) {
@ -39,7 +39,7 @@ func benchmarkParseReply(b *testing.B, reply string, p multiBulkParser, wanterr
b.ResetTimer()
for i := 0; i < b.N; i++ {
_, err := parseReply(cn, p)
_, err := readReply(cn, p)
if !wanterr && err != nil {
b.Fatal(err)
}

2
pipeline.go
View File

@ -97,7 +97,7 @@ func execCmds(cn *conn, cmds []Cmder) ([]Cmder, error) {
var firstCmdErr error
var failedCmds []Cmder
for _, cmd := range cmds {
err := cmd.parseReply(cn)
err := cmd.readReply(cn)
if err == nil {
continue
}

2
pubsub.go
View File

@ -215,7 +215,7 @@ func (c *PubSub) ReceiveTimeout(timeout time.Duration) (interface{}, error) {
cn.ReadTimeout = timeout
cmd := NewSliceCmd()
if err := cmd.parseReply(cn); err != nil {
if err := cmd.readReply(cn); err != nil {
return nil, err
}
return newMessage(cmd.Val())

2
redis.go
View File

@ -69,7 +69,7 @@ func (c *baseClient) process(cmd Cmder) {
return
}
err = cmd.parseReply(cn)
err = cmd.readReply(cn)
c.putConn(cn, err)
if shouldRetry(err) {
continue