func (s *_ABitOfEverythingServer) List(_ *examples.EmptyMessage, stream examples.ABitOfEverythingService_ListServer) error {
s.m.Lock()
defer s.m.Unlock()
for _, msg := range s.v {
if err := stream.Send(msg); err != nil {
return err
}
}
return nil
}
func (s *_ABitOfEverythingServer) List(_ *examples.EmptyMessage, stream examples.ABitOfEverythingService_ListServer) error {
s.m.Lock()
defer s.m.Unlock()
err := stream.SendHeader(metadata.New(map[string]string{
"count": fmt.Sprintf("%d", len(s.v)),
}))
if err != nil {
return nil
}
for _, msg := range s.v {
if err := stream.Send(msg); err != nil {
return err
}
}
// return error when metadata includes error header
if header, ok := metadata.FromContext(stream.Context()); ok {
if v, ok := header["error"]; ok {
stream.SetTrailer(metadata.New(map[string]string{
"foo": "foo2",
"bar": "bar2",
}))
return grpc.Errorf(codes.InvalidArgument, "error metadata: %v", v)
}
}
return nil
}