func handler(req mercury.Request) (mercury.Response, error) {
request := req.Body().(*hello.Request)
rsp := req.Response(&hello.Response{
Msg: "Hey " + request.Name,
})
return rsp, nil
}
// ErrorResponse constructs a response for the given request, with the given error as its contents. Mercury clients
// know how to unmarshal these errors.
func ErrorResponse(req mercury.Request, err error) mercury.Response {
rsp := req.Response(nil)
var terr *terrors.Error
if err != nil {
terr = terrors.Wrap(err, nil).(*terrors.Error)
}
rsp.SetBody(terrors.Marshal(terr))
if err := tmsg.ProtoMarshaler().MarshalBody(rsp); err != nil {
log.Errorf("[Mercury:Server] Failed to marshal error response: %v", err)
return nil // Not much we can do here
}
rsp.SetIsError(true)
return rsp
}