使用动态消息作为参数的gRPC [英] gRPC with dynamic messages as an argument

问题描述

在阅读了protobuf支持动态创建动态消息之后，我试图创建一个返回动态消息的gRPC服务.(例如，在数据库中返回一行但仅在运行时才知道该模式的服务)

After reading that protobuf supports creation of dynamic messages on the fly, I am trying to create a gRPC service that returns a dynamic message. (e.g. a service that returns a row in database but the schema is only known at run time)

有可能吗，我该如何构造.proto?

Is it possible and how would I construct the .proto for that?

谢谢.

推荐答案

在Java中，有一个名为

In Java there is a special object called DynamicMessage which can take a descriptor and send that. If you can get the descriptor at runtime you can get it that way.

虽然不完全符合proto的精神，但是您可以使用

Also, while not exactly in the spirit of proto, you can represent arbitrary structured data using struct.proto.

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