英文:
Can I generate a grpc stub file by referring to an external url?
问题
从上周开始，我开始学习gRPC / protobuf，并且我想找出最佳的微服务架构。其中一个方面是将接口定义语言（IDL）存储库单独分离出来。这样，任何服务都可以生成存根文件，而无需从另一个服务中复制/粘贴proto文件。这种做法可行吗？
英文:
I was start to learning gRPC / protobuf from last week and I wanna find out best architectures for microservices. So one of the things is to have a IDL repository separately. If so, Any service can generate stub files without proto file copy / paste from another service. Is it possible?
答案1
得分: 2
如果我没记错的话，protoc不支持通过URL引用proto文件，这是不幸的，因为这是一个合理的需求。可能是因为特定语言的代码生成实现支持这一功能。
我建议你将项目的proto文件（可能还包括从它们生成的protoc代码）发布在一个单独的（proto）仓库中。这样可以促进重用，独立版本控制，并鼓励跨语言使用。
如果proto文件被捆绑在一个包含Golang服务器实现的仓库中，要想仅克隆proto文件以生成Python客户端就更加困难。
英文:
IIRC protoc does not enable referencing protos via URL which is unfortunate as it's a reasonable requirement. It's possible that language-specific implementations of the code generation, do enable this.
I recommend you do publish a project's protos (and possibly cache code protoc-generated from them) in a separate (proto) repo. This facilitates reuse, independent versioning and encourages cross-language use.
If protos are bundled in e.g. a repo including a Golang server implementation, it's more difficult to just clone the protos in order to generate e.g. a Python client.
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