forked from travisjeffery/jocko
/
message.go
54 lines (50 loc) · 1011 Bytes
/
message.go
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package protocol
import "time"
type Message struct {
Timestamp time.Time
Key []byte
Value []byte
MagicByte int8
}
func (m *Message) Encode(e PacketEncoder) error {
e.Push(&CRCField{})
e.PutInt8(m.MagicByte)
e.PutInt8(0) // attributes
if m.MagicByte > 0 {
e.PutInt64(m.Timestamp.UnixNano() / int64(time.Millisecond))
}
if err := e.PutBytes(m.Key); err != nil {
return err
}
if err := e.PutBytes(m.Value); err != nil {
return err
}
e.Pop()
return nil
}
func (m *Message) Decode(d PacketDecoder) error {
var err error
if err = d.Push(&CRCField{}); err != nil {
return err
}
if m.MagicByte, err = d.Int8(); err != nil {
return err
}
if _, err := d.Int8(); err != nil {
return err
}
if m.MagicByte > 0 {
t, err := d.Int64()
if err != nil {
return err
}
m.Timestamp = time.Unix(t/1000, (t%1000)*int64(time.Millisecond))
}
if m.Key, err = d.Bytes(); err != nil {
return err
}
if m.Value, err = d.Bytes(); err != nil {
return err
}
return d.Pop()
}