// Write writes an Envelope to the given writer.
func Write(p protocol.Protocol, w io.Writer, seqID int32, e Enveloper) error {
body, err := e.ToWire()
if err != nil {
return err
}
return p.EncodeEnveloped(wire.Envelope{
SeqID: seqID,
Name: e.MethodName(),
Type: e.EnvelopeType(),
Value: body,
}, w)
}
// ReadReply reads enveloped responses from the given reader.
func ReadReply(p protocol.Protocol, r io.ReaderAt) (_ wire.Value, seqID int32, _ error) {
envelope, err := p.DecodeEnveloped(r)
if err != nil {
return wire.Value{}, 0, err
}
switch {
case envelope.Type == wire.Reply:
return envelope.Value, envelope.SeqID, nil
case envelope.Type != wire.Exception:
return envelope.Value, envelope.SeqID, fmt.Errorf("unknown envelope type for reply, got %v", envelope.Type)
}
// Decode the exception payload.
ex := &exception.TApplicationException{}
if err := ex.FromWire(envelope.Value); err != nil {
return envelope.Value, envelope.SeqID, fmt.Errorf("failed to decode exception: %v", err)
}
return envelope.Value, envelope.SeqID, ex
}