micro/codec/codec.go

48 lines
820 B
Go

package codec
import (
"io"
)
const (
Error MessageType = iota
Request
Response
Publication
)
type MessageType int
// Takes in a connection/buffer and returns a new Codec
type NewCodec func(io.ReadWriteCloser) Codec
// Codec encodes/decodes various types of
// messages used within go-micro
type Codec interface {
Encoder
Decoder
Close() error
String() string
}
type Encoder interface {
Write(*Message, interface{}) error
}
type Decoder interface {
ReadHeader(*Message, MessageType) error
ReadBody(interface{}) error
}
// Message represents detailed information about
// the communication, likely followed by the body.
// In the case of an error, body may be nil.
type Message struct {
Id uint64
Type MessageType
Target string
Method string
Error string
Headers map[string]string
}