func (r rawUnaryHandler) Handle(ctx context.Context, treq *transport.Request, rw transport.ResponseWriter) error {
if err := encoding.Expect(treq, Encoding); err != nil {
return err
}
reqBody, err := ioutil.ReadAll(treq.Body)
if err != nil {
return err
}
reqMeta := meta.FromTransportRequest(treq)
resBody, resMeta, err := r.UnaryHandler(ctx, reqMeta, reqBody)
if err != nil {
return err
}
if resMeta != nil {
meta.ToTransportResponseWriter(resMeta, rw)
}
if _, err := rw.Write(resBody); err != nil {
return err
}
return nil
}
// ToTransportResponseWriter fills the given transport response with
// information from the given ResMeta.
func ToTransportResponseWriter(resMeta yarpc.ResMeta, w transport.ResponseWriter) {
if hs := resMeta.GetHeaders(); hs.Len() > 0 {
w.AddHeaders(transport.Headers(resMeta.GetHeaders()))
}
}
func (t thriftUnaryHandler) Handle(ctx context.Context, treq *transport.Request, rw transport.ResponseWriter) error {
if err := encoding.Expect(treq, Encoding); err != nil {
return err
}
body, err := ioutil.ReadAll(treq.Body)
if err != nil {
return err
}
// We disable enveloping if either the client or the transport requires it.
proto := t.Protocol
if !t.Enveloping {
proto = disableEnvelopingProtocol{
Protocol: proto,
Type: wire.Call, // we only decode requests
}
}
envelope, err := proto.DecodeEnveloped(bytes.NewReader(body))
if err != nil {
return encoding.RequestBodyDecodeError(treq, err)
}
if envelope.Type != wire.Call {
return encoding.RequestBodyDecodeError(
treq, errUnexpectedEnvelopeType(envelope.Type))
}
reqMeta := meta.FromTransportRequest(treq)
res, err := t.UnaryHandler.Handle(ctx, reqMeta, envelope.Value)
if err != nil {
return err
}
if resType := res.Body.EnvelopeType(); resType != wire.Reply {
return encoding.ResponseBodyEncodeError(
treq, errUnexpectedEnvelopeType(resType))
}
value, err := res.Body.ToWire()
if err != nil {
return err
}
if res.IsApplicationError {
rw.SetApplicationError()
}
resMeta := res.Meta
if resMeta != nil {
meta.ToTransportResponseWriter(resMeta, rw)
}
err = proto.EncodeEnveloped(wire.Envelope{
Name: res.Body.MethodName(),
Type: res.Body.EnvelopeType(),
SeqID: envelope.SeqID,
Value: value,
}, rw)
if err != nil {
return encoding.ResponseBodyEncodeError(treq, err)
}
return nil
}