Support for reading proto files from jar / zip files about protoreflect HOT 4 CLOSED

Protoparse is just a parser/compiler for source. It is up to the caller to retrieve the source (such as from a JAR or ZIP file).

So grpcurl could ostensibly handle this, examining the contents of ZIP files and providing them to protoparse. But I'm not sure that the maintainers would be very interested in this.

For now, you can work-around this by unzipping the file separately and then pointing grpcurl directly at the unzipped sources.

Another similar and newer tool that may work is the Buf CLI. It includes a buf curl sub-command that is similar to grpcurl. But you can direct it to look at a ZIP file or even remote git repo in the --schema argument.

FYI, if you look at the notice at the top of this repo's README, you'll see that protoparse is not going to be materially maintained going forward. In an upcoming v2 of this repo, it will be omitted. Instead see https://github.com/bufbuild/protocompile for a newer Go library that compiles Protobuf sources.

Good luck!

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@tsipo, I don't think you actually need a sym-link. I think you can suffix the file name with #format=zip. See docs.

So try this:

buf curl --protocol grpc --http2-prior-knowledge --schema example-grpc.jar#format=zip

I did not know they added curl-like capabilities.

Yeah, I did that a few months ago 😄

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Thanks a lot!

I recall seeing a demo of buf a while ago, which focused mainly on their BSR service. I did not know they added curl-like capabilities.

They cannot take a .jar file as schema (it looks to me that the file extension determines the handling and only ".zip" is zip), but that can be resolved easily, like with the following symlink (which is less of a maintenance pain than making sure the jar file and a FileDescriptorSet are in sync):

$ ln -s example-grpc.jar example-grpc.zip
$ buf curl --protocol grpc --http2-prior-knowledge --schema example-grpc.zip \
http://localhost:50001/example.ExampleService/ping
{"msg":"Success"}

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#format=zip suffix works like magic, thanks again!

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