使用github的七牛SDK，配置名称Kodo->Qiniu

vendor/github.com/garyburd/redigo/redis/conn.go

@@ -31,7 +31,6 @@ import (
 
 // conn is the low-level implementation of Conn
 type conn struct {
-
 	// Shared
 	mu      sync.Mutex
 	pending int
@@ -76,7 +75,7 @@ type dialOptions struct {
 	dial         func(network, addr string) (net.Conn, error)
 	db           int
 	password     string
-	dialTLS      bool
+	useTLS       bool
 	skipVerify   bool
 	tlsConfig    *tls.Config
 }
@@ -135,14 +134,22 @@ func DialTLSConfig(c *tls.Config) DialOption {
 	}}
 }
 
-// DialTLSSkipVerify to disable server name verification when connecting
-// over TLS. Has no effect when not dialing a TLS connection.
+// DialTLSSkipVerify disables server name verification when connecting over
+// TLS. Has no effect when not dialing a TLS connection.
 func DialTLSSkipVerify(skip bool) DialOption {
 	return DialOption{func(do *dialOptions) {
 		do.skipVerify = skip
 	}}
 }
 
+// DialUseTLS specifies whether TLS should be used when connecting to the
+// server. This option is ignore by DialURL.
+func DialUseTLS(useTLS bool) DialOption {
+	return DialOption{func(do *dialOptions) {
+		do.useTLS = useTLS
+	}}
+}
+
 // Dial connects to the Redis server at the given network and
 // address using the specified options.
 func Dial(network, address string, options ...DialOption) (Conn, error) {
@@ -158,7 +165,7 @@ func Dial(network, address string, options ...DialOption) (Conn, error) {
 		return nil, err
 	}
 
-	if do.dialTLS {
+	if do.useTLS {
 		tlsConfig := cloneTLSClientConfig(do.tlsConfig, do.skipVerify)
 		if tlsConfig.ServerName == "" {
 			host, _, err := net.SplitHostPort(address)
@@ -202,10 +209,6 @@ func Dial(network, address string, options ...DialOption) (Conn, error) {
 	return c, nil
 }
 
-func dialTLS(do *dialOptions) {
-	do.dialTLS = true
-}
-
 var pathDBRegexp = regexp.MustCompile(`/(\d*)\z`)
 
 // DialURL connects to a Redis server at the given URL using the Redis
@@ -257,9 +260,7 @@ func DialURL(rawurl string, options ...DialOption) (Conn, error) {
 		return nil, fmt.Errorf("invalid database: %s", u.Path[1:])
 	}
 
-	if u.Scheme == "rediss" {
-		options = append([]DialOption{{dialTLS}}, options...)
-	}
+	options = append(options, DialUseTLS(u.Scheme == "rediss"))
 
 	return Dial("tcp", address, options...)
 }
@@ -344,43 +345,55 @@ func (c *conn) writeFloat64(n float64) error {
 	return c.writeBytes(strconv.AppendFloat(c.numScratch[:0], n, 'g', -1, 64))
 }
 
-func (c *conn) writeCommand(cmd string, args []interface{}) (err error) {
+func (c *conn) writeCommand(cmd string, args []interface{}) error {
 	c.writeLen('*', 1+len(args))
-	err = c.writeString(cmd)
+	if err := c.writeString(cmd); err != nil {
+		return err
+	}
 	for _, arg := range args {
-		if err != nil {
-			break
-		}
-		switch arg := arg.(type) {
-		case string:
-			err = c.writeString(arg)
-		case []byte:
-			err = c.writeBytes(arg)
-		case int:
-			err = c.writeInt64(int64(arg))
-		case int64:
-			err = c.writeInt64(arg)
-		case float64:
-			err = c.writeFloat64(arg)
-		case bool:
-			if arg {
-				err = c.writeString("1")
-			} else {
-				err = c.writeString("0")
-			}
-		case nil:
-			err = c.writeString("")
-		case Argument:
-			var buf bytes.Buffer
-			fmt.Fprint(&buf, arg.RedisArg())
-			err = c.writeBytes(buf.Bytes())
-		default:
-			var buf bytes.Buffer
-			fmt.Fprint(&buf, arg)
-			err = c.writeBytes(buf.Bytes())
+		if err := c.writeArg(arg, true); err != nil {
+			return err
 		}
 	}
-	return err
+	return nil
+}
+
+func (c *conn) writeArg(arg interface{}, argumentTypeOK bool) (err error) {
+	switch arg := arg.(type) {
+	case string:
+		return c.writeString(arg)
+	case []byte:
+		return c.writeBytes(arg)
+	case int:
+		return c.writeInt64(int64(arg))
+	case int64:
+		return c.writeInt64(arg)
+	case float64:
+		return c.writeFloat64(arg)
+	case bool:
+		if arg {
+			return c.writeString("1")
+		} else {
+			return c.writeString("0")
+		}
+	case nil:
+		return c.writeString("")
+	case Argument:
+		if argumentTypeOK {
+			return c.writeArg(arg.RedisArg(), false)
+		}
+		// See comment in default clause below.
+		var buf bytes.Buffer
+		fmt.Fprint(&buf, arg)
+		return c.writeBytes(buf.Bytes())
+	default:
+		// This default clause is intended to handle builtin numeric types.
+		// The function should return an error for other types, but this is not
+		// done for compatibility with previous versions of the package.
+		var buf bytes.Buffer
+		fmt.Fprint(&buf, arg)
+		return c.writeBytes(buf.Bytes())
+	}
 }
 
 type protocolError string