// Read handles a pb.ReadRequest sending bytes to the pb.ByteStream_ReadServer // Implements bytestream.proto "rpc Read(ReadRequest) returns (stream ReadResponse)" func (rpc *grpcService) Read(request *pb.ReadRequest, stream pb.ByteStream_ReadServer) error { if rpc.parent.readHandler == nil { return grpc.Errorf(codes.Unimplemented, "instance of NewServer(readHandler = nil) rejects all reads") } if request == nil { return grpc.Errorf(codes.Internal, "Read(ReadRequest == nil)") } if request.ResourceName == "" { return grpc.Errorf(codes.InvalidArgument, "ReadRequest: empty or missing resource_name") } reader, err := rpc.parent.readHandler.GetReader(stream.Context(), request.ResourceName) if err != nil { return err } if err = rpc.readFrom(request, reader, stream); err != nil { rpc.parent.readHandler.Close(stream.Context(), request.ResourceName) return err } if err = rpc.parent.readHandler.Close(stream.Context(), request.ResourceName); err != nil { return err } return nil }