micro/codec/bytes/bytes.go
2019-01-16 15:27:57 +00:00

76 lines
1.3 KiB
Go

// Package bytes provides a bytes codec which does not encode or decode anything
package bytes
import (
"fmt"
"io"
"io/ioutil"
"github.com/micro/go-micro/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 := ioutil.ReadAll(c.Conn)
if err != nil {
return err
}
switch b.(type) {
case *[]byte:
v := b.(*[]byte)
*v = buf
case *Frame:
v := b.(*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 b.(type) {
case *Frame:
v = b.(*Frame).Data
case *[]byte:
ve := b.(*[]byte)
v = *ve
case []byte:
v = b.([]byte)
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,
}
}