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package dnstap
import (
"io"
"time"
tap "github.com/dnstap/golang-dnstap"
fs "github.com/farsightsec/golang-framestream"
"github.com/golang/protobuf/proto"
)
// encoder wraps a golang-framestream.Encoder.
type encoder struct {
fs *fs.Encoder
}
func newEncoder(w io.Writer, timeout time.Duration) (*encoder, error) {
fs, err := fs.NewEncoder(w, &fs.EncoderOptions{
ContentType: []byte("protobuf:dnstap.Dnstap"),
Bidirectional: true,
Timeout: timeout,
})
if err != nil {
return nil, err
}
return &encoder{fs}, nil
}
func (e *encoder) writeMsg(msg *tap.Dnstap) error {
buf, err := proto.Marshal(msg)
if err != nil {
return err
}
_, err = e.fs.Write(buf) // n < len(buf) should return an error?
return err
}
func (e *encoder) flush() error { return e.fs.Flush() }
func (e *encoder) close() error { return e.fs.Close() }
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