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go-micro/codec/bytes/bytes.go

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// Package bytes provides a bytes codec which does not encode or decode anything
package bytes
import (
"fmt"
"io"
"io/ioutil"
"github.com/asim/go-micro/v3/codec"
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)
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
}
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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
}
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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)
}
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return nil
}
func (c *Codec) Write(m *codec.Message, b interface{}) error {
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var v []byte
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switch vb := b.(type) {
case *Frame:
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v = vb.Data
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case *[]byte:
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v = *vb
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case []byte:
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v = vb
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default:
return fmt.Errorf("failed to write: %v is not type of *[]byte or []byte", b)
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}
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_, err := c.Conn.Write(v)
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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,
}
}