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
}
Esempio n. 2
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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
}