Fix proto.RedisError in slices

cluster_test.go

@@ -574,8 +574,8 @@ var _ = Describe("ClusterClient", func() {
 	Describe("ClusterClient failover", func() {
 		BeforeEach(func() {
 			opt = redisClusterOptions()
-			opt.MinRetryBackoff = 100 * time.Millisecond
-			opt.MaxRetryBackoff = 3 * time.Second
+			opt.MinRetryBackoff = 250 * time.Millisecond
+			opt.MaxRetryBackoff = time.Second
 			client = cluster.clusterClient(opt)
 
 			_ = client.ForEachSlave(func(slave *redis.Client) error {

command.go

@@ -10,6 +10,7 @@ import (
 	"github.com/go-redis/redis/internal"
 	"github.com/go-redis/redis/internal/pool"
 	"github.com/go-redis/redis/internal/proto"
+	"github.com/go-redis/redis/internal/util"
 )
 
 type Cmder interface {
@@ -436,7 +437,7 @@ func NewStringCmd(args ...interface{}) *StringCmd {
 }
 
 func (cmd *StringCmd) Val() string {
-	return internal.BytesToString(cmd.val)
+	return util.BytesToString(cmd.val)
 }
 
 func (cmd *StringCmd) Result() (string, error) {

commands.go

@@ -1,6 +1,7 @@
 package redis
 
 import (
+	"errors"
 	"io"
 	"time"
 
@@ -1802,7 +1803,7 @@ func (c *cmdable) shutdown(modifier string) *StatusCmd {
 		}
 	} else {
 		// Server did not quit. String reply contains the reason.
-		cmd.err = internal.RedisError(cmd.val)
+		cmd.err = errors.New(cmd.val)
 		cmd.val = ""
 	}
 	return cmd

commands_test.go

@@ -10,7 +10,7 @@ import (
 	. "github.com/onsi/gomega"
 
 	"github.com/go-redis/redis"
-	"github.com/go-redis/redis/internal"
+	"github.com/go-redis/redis/internal/proto"
 )
 
 var _ = Describe("Commands", func() {
@@ -3000,7 +3000,7 @@ var _ = Describe("Commands", func() {
 				nil,
 			).Result()
 			Expect(err).NotTo(HaveOccurred())
-			Expect(vals).To(Equal([]interface{}{int64(12), internal.RedisError("error"), "abc"}))
+			Expect(vals).To(Equal([]interface{}{int64(12), proto.RedisError("error"), "abc"}))
 		})
 
 	})

internal/error.go

@@ -4,13 +4,9 @@ import (
 	"io"
 	"net"
 	"strings"
-)
-
-const Nil = RedisError("redis: nil")
 
-type RedisError string
-
-func (e RedisError) Error() string { return string(e) }
+	"github.com/go-redis/redis/internal/proto"
+)
 
 func IsRetryableError(err error, retryNetError bool) bool {
 	if IsNetworkError(err) {
@@ -30,7 +26,7 @@ func IsRetryableError(err error, retryNetError bool) bool {
 }
 
 func IsRedisError(err error) bool {
-	_, ok := err.(RedisError)
+	_, ok := err.(proto.RedisError)
 	return ok
 }
 

internal/proto/reader.go

@@ -6,7 +6,7 @@ import (
 	"io"
 	"strconv"
 
-	"github.com/go-redis/redis/internal"
+	"github.com/go-redis/redis/internal/util"
 )
 
 const bytesAllocLimit = 1024 * 1024 // 1mb
@@ -19,6 +19,16 @@ const (
 	ArrayReply  = '*'
 )
 
+//------------------------------------------------------------------------------
+
+const Nil = RedisError("redis: nil")
+
+type RedisError string
+
+func (e RedisError) Error() string { return string(e) }
+
+//------------------------------------------------------------------------------
+
 type MultiBulkParse func(*Reader, int64) (interface{}, error)
 
 type Reader struct {
@@ -66,7 +76,7 @@ func (r *Reader) ReadLine() ([]byte, error) {
 		return nil, fmt.Errorf("redis: reply is empty")
 	}
 	if isNilReply(line) {
-		return nil, internal.Nil
+		return nil, Nil
 	}
 	return line, nil
 }
@@ -83,7 +93,7 @@ func (r *Reader) ReadReply(m MultiBulkParse) (interface{}, error) {
 	case StatusReply:
 		return parseStatusValue(line), nil
 	case IntReply:
-		return parseInt(line[1:], 10, 64)
+		return util.ParseInt(line[1:], 10, 64)
 	case StringReply:
 		return r.readTmpBytesValue(line)
 	case ArrayReply:
@@ -105,7 +115,7 @@ func (r *Reader) ReadIntReply() (int64, error) {
 	case ErrorReply:
 		return 0, ParseErrorReply(line)
 	case IntReply:
-		return parseInt(line[1:], 10, 64)
+		return util.ParseInt(line[1:], 10, 64)
 	default:
 		return 0, fmt.Errorf("redis: can't parse int reply: %.100q", line)
 	}
@@ -151,7 +161,7 @@ func (r *Reader) ReadFloatReply() (float64, error) {
 	if err != nil {
 		return 0, err
 	}
-	return parseFloat(b, 64)
+	return util.ParseFloat(b, 64)
 }
 
 func (r *Reader) ReadArrayReply(m MultiBulkParse) (interface{}, error) {
@@ -221,7 +231,7 @@ func (r *Reader) ReadScanReply() ([]string, uint64, error) {
 
 func (r *Reader) readTmpBytesValue(line []byte) ([]byte, error) {
 	if isNilReply(line) {
-		return nil, internal.Nil
+		return nil, Nil
 	}
 
 	replyLen, err := strconv.Atoi(string(line[1:]))
@@ -241,15 +251,15 @@ func (r *Reader) ReadInt() (int64, error) {
 	if err != nil {
 		return 0, err
 	}
-	return parseInt(b, 10, 64)
+	return util.ParseInt(b, 10, 64)
 }
 
 func (r *Reader) ReadUint() (uint64, error) {
 	b, err := r.ReadTmpBytesReply()
 	if err != nil {
 		return 0, err
 	}
-	return parseUint(b, 10, 64)
+	return util.ParseUint(b, 10, 64)
 }
 
 // --------------------------------------------------------------------
@@ -303,7 +313,7 @@ func isNilReply(b []byte) bool {
 }
 
 func ParseErrorReply(line []byte) error {
-	return internal.RedisError(string(line[1:]))
+	return RedisError(string(line[1:]))
 }
 
 func parseStatusValue(line []byte) []byte {
@@ -312,23 +322,7 @@ func parseStatusValue(line []byte) []byte {
 
 func parseArrayLen(line []byte) (int64, error) {
 	if isNilReply(line) {
-		return 0, internal.Nil
+		return 0, Nil
 	}
-	return parseInt(line[1:], 10, 64)
-}
-
-func atoi(b []byte) (int, error) {
-	return strconv.Atoi(internal.BytesToString(b))
-}
-
-func parseInt(b []byte, base int, bitSize int) (int64, error) {
-	return strconv.ParseInt(internal.BytesToString(b), base, bitSize)
-}
-
-func parseUint(b []byte, base int, bitSize int) (uint64, error) {
-	return strconv.ParseUint(internal.BytesToString(b), base, bitSize)
-}
-
-func parseFloat(b []byte, bitSize int) (float64, error) {
-	return strconv.ParseFloat(internal.BytesToString(b), bitSize)
+	return util.ParseInt(line[1:], 10, 64)
 }

internal/proto/scan.go

@@ -5,96 +5,96 @@ import (
 	"fmt"
 	"reflect"
 
-	"github.com/go-redis/redis/internal"
+	"github.com/go-redis/redis/internal/util"
 )
 
 func Scan(b []byte, v interface{}) error {
 	switch v := v.(type) {
 	case nil:
 		return fmt.Errorf("redis: Scan(nil)")
 	case *string:
-		*v = internal.BytesToString(b)
+		*v = util.BytesToString(b)
 		return nil
 	case *[]byte:
 		*v = b
 		return nil
 	case *int:
 		var err error
-		*v, err = atoi(b)
+		*v, err = util.Atoi(b)
 		return err
 	case *int8:
-		n, err := parseInt(b, 10, 8)
+		n, err := util.ParseInt(b, 10, 8)
 		if err != nil {
 			return err
 		}
 		*v = int8(n)
 		return nil
 	case *int16:
-		n, err := parseInt(b, 10, 16)
+		n, err := util.ParseInt(b, 10, 16)
 		if err != nil {
 			return err
 		}
 		*v = int16(n)
 		return nil
 	case *int32:
-		n, err := parseInt(b, 10, 32)
+		n, err := util.ParseInt(b, 10, 32)
 		if err != nil {
 			return err
 		}
 		*v = int32(n)
 		return nil
 	case *int64:
-		n, err := parseInt(b, 10, 64)
+		n, err := util.ParseInt(b, 10, 64)
 		if err != nil {
 			return err
 		}
 		*v = n
 		return nil
 	case *uint:
-		n, err := parseUint(b, 10, 64)
+		n, err := util.ParseUint(b, 10, 64)
 		if err != nil {
 			return err
 		}
 		*v = uint(n)
 		return nil
 	case *uint8:
-		n, err := parseUint(b, 10, 8)
+		n, err := util.ParseUint(b, 10, 8)
 		if err != nil {
 			return err
 		}
 		*v = uint8(n)
 		return nil
 	case *uint16:
-		n, err := parseUint(b, 10, 16)
+		n, err := util.ParseUint(b, 10, 16)
 		if err != nil {
 			return err
 		}
 		*v = uint16(n)
 		return nil
 	case *uint32:
-		n, err := parseUint(b, 10, 32)
+		n, err := util.ParseUint(b, 10, 32)
 		if err != nil {
 			return err
 		}
 		*v = uint32(n)
 		return nil
 	case *uint64:
-		n, err := parseUint(b, 10, 64)
+		n, err := util.ParseUint(b, 10, 64)
 		if err != nil {
 			return err
 		}
 		*v = n
 		return nil
 	case *float32:
-		n, err := parseFloat(b, 32)
+		n, err := util.ParseFloat(b, 32)
 		if err != nil {
 			return err
 		}
 		*v = float32(n)
 		return err
 	case *float64:
 		var err error
-		*v, err = parseFloat(b, 64)
+		*v, err = util.ParseFloat(b, 64)
 		return err
 	case *bool:
 		*v = len(b) == 1 && b[0] == '1'
@@ -120,7 +120,7 @@ func ScanSlice(data []string, slice interface{}) error {
 		return fmt.Errorf("redis: ScanSlice(non-slice %T)", slice)
 	}
 
-	next := internal.MakeSliceNextElemFunc(v)
+	next := makeSliceNextElemFunc(v)
 	for i, s := range data {
 		elem := next()
 		if err := Scan([]byte(s), elem.Addr().Interface()); err != nil {
@@ -131,3 +131,36 @@ func ScanSlice(data []string, slice interface{}) error {
 
 	return nil
 }
+
+func makeSliceNextElemFunc(v reflect.Value) func() reflect.Value {
+	elemType := v.Type().Elem()
+
+	if elemType.Kind() == reflect.Ptr {
+		elemType = elemType.Elem()
+		return func() reflect.Value {
+			if v.Len() < v.Cap() {
+				v.Set(v.Slice(0, v.Len()+1))
+				elem := v.Index(v.Len() - 1)
+				if elem.IsNil() {
+					elem.Set(reflect.New(elemType))
+				}
+				return elem.Elem()
+			}
+
+			elem := reflect.New(elemType)
+			v.Set(reflect.Append(v, elem))
+			return elem.Elem()
+		}
+	}
+
+	zero := reflect.Zero(elemType)
+	return func() reflect.Value {
+		if v.Len() < v.Cap() {
+			v.Set(v.Slice(0, v.Len()+1))
+			return v.Index(v.Len() - 1)
+		}
+
+		v.Set(reflect.Append(v, zero))
+		return v.Index(v.Len() - 1)
+	}
+}