chore: import upstream snapshot with attribution

codec/bytes/bytes.go

@@ -0,0 +1,71 @@
+// Package bytes provides a bytes codec which does not encode or decode anything
+package bytes
+
+import (
+	"fmt"
+	"io"
+
+	"go-micro.dev/v6/codec"
+)
+
+type Codec struct {
+	Conn io.ReadWriteCloser
+}
+
+// Frame gives us the ability to define raw data to send over the pipes.
+type Frame struct {
+	Data []byte
+}
+
+func (c *Codec) ReadHeader(m *codec.Message, t codec.MessageType) error {
+	return nil
+}
+
+func (c *Codec) ReadBody(b interface{}) error {
+	// read bytes
+	buf, err := io.ReadAll(c.Conn)
+	if err != nil {
+		return err
+	}
+
+	switch v := b.(type) {
+	case *[]byte:
+		*v = buf
+	case *Frame:
+		v.Data = buf
+	default:
+		return fmt.Errorf("failed to read body: %v is not type of *[]byte", b)
+	}
+
+	return nil
+}
+
+func (c *Codec) Write(m *codec.Message, b interface{}) error {
+	var v []byte
+	switch vb := b.(type) {
+	case *Frame:
+		v = vb.Data
+	case *[]byte:
+		v = *vb
+	case []byte:
+		v = vb
+	default:
+		return fmt.Errorf("failed to write: %v is not type of *[]byte or []byte", b)
+	}
+	_, err := c.Conn.Write(v)
+	return err
+}
+
+func (c *Codec) Close() error {
+	return c.Conn.Close()
+}
+
+func (c *Codec) String() string {
+	return "bytes"
+}
+
+func NewCodec(c io.ReadWriteCloser) codec.Codec {
+	return &Codec{
+		Conn: c,
+	}
+}