Buf - Wrong import in grpcgateway

[Aldiwildan77]

🐛 Bug Report

GRPC Gateway generates the wrong grpc import, so when I do go run . the error occurs

# buf.build/gen/go/mocha/remcall/grpc-ecosystem/gateway/v2/donut/v1/matchmaker/donutv1gateway
C:\Users\Administrator\go\pkg\mod\buf.build\gen\go\mocha\remcall\grpc-ecosystem\gateway\v2@v2.18.1-20231209063154-4f8472b3e8fa.1\donut\v1\matchmaker\donutv1gateway\matchmaker.pb.gw.go:36:108: undefined: donutv1grpc
C:\Users\Administrator\go\pkg\mod\buf.build\gen\go\mocha\remcall\grpc-ecosystem\gateway\v2@v2.18.1-20231209063154-4f8472b3e8fa.1\donut\v1\matchmaker\donutv1gateway\matchmaker.pb.gw.go:53:114: undefined: donutv1grpc
C:\Users\Administrator\go\pkg\mod\buf.build\gen\go\mocha\remcall\grpc-ecosystem\gateway\v2@v2.18.1-20231209063154-4f8472b3e8fa.1\donut\v1\matchmaker\donutv1gateway\matchmaker.pb.gw.go:70:116: undefined: donutv1grpc
C:\Users\Administrator\go\pkg\mod\buf.build\gen\go\mocha\remcall\grpc-ecosystem\gateway\v2@v2.18.1-20231209063154-4f8472b3e8fa.1\donut\v1\matchmaker\donutv1gateway\matchmaker.pb.gw.go:96:122: undefined: donutv1grpc
C:\Users\Administrator\go\pkg\mod\buf.build\gen\go\mocha\remcall\grpc-ecosystem\gateway\v2@v2.18.1-20231209063154-4f8472b3e8fa.1\donut\v1\matchmaker\donutv1gateway\matchmaker.pb.gw.go:122:107: undefined: donutv1grpc
C:\Users\Administrator\go\pkg\mod\buf.build\gen\go\mocha\remcall\grpc-ecosystem\gateway\v2@v2.18.1-20231209063154-4f8472b3e8fa.1\donut\v1\matchmaker\donutv1gateway\matchmaker.pb.gw.go:148:113: undefined: donutv1grpc
C:\Users\Administrator\go\pkg\mod\buf.build\gen\go\mocha\remcall\grpc-ecosystem\gateway\v2@v2.18.1-20231209063154-4f8472b3e8fa.1\donut\v1\matchmaker\donutv1gateway\matchmaker.pb.gw.go:174:106: undefined: donutv1grpc
C:\Users\Administrator\go\pkg\mod\buf.build\gen\go\mocha\remcall\grpc-ecosystem\gateway\v2@v2.18.1-20231209063154-4f8472b3e8fa.1\donut\v1\matchmaker\donutv1gateway\matchmaker.pb.gw.go:200:112: undefined: donutv1grpc
C:\Users\Administrator\go\pkg\mod\buf.build\gen\go\mocha\remcall\grpc-ecosystem\gateway\v2@v2.18.1-20231209063154-4f8472b3e8fa.1\donut\v1\matchmaker\donutv1gateway\matchmaker.pb.gw.go:230:96: undefined: donutv1grpc
C:\Users\Administrator\go\pkg\mod\buf.build\gen\go\mocha\remcall\grpc-ecosystem\gateway\v2@v2.18.1-20231209063154-4f8472b3e8fa.1\donut\v1\matchmaker\donutv1gateway\matchmaker.pb.gw.go:371:96: undefined: donutv1grpc
C:\Users\Administrator\go\pkg\mod\buf.build\gen\go\mocha\remcall\grpc-ecosystem\gateway\v2@v2.18.1-20231209063154-4f8472b3e8fa.1\donut\v1\matchmaker\donutv1gateway\matchmaker.pb.gw.go:371:96: too many errors

To Reproduce

(Write your steps here:)

1. Create the proto with buf, in this case, look at my repo
2. Push to the BSR (using CI CD via GitHub action, look at the repo above)
3. Run a go get to get the BSR generated SDK
4. Do the grpc gateway implementation (https://github.com/grpc-ecosystem/grpc-gateway?tab=readme-ov-file#5-write-an-entrypoint-for-the-http-reverse-proxy-server)
5. Run the golang service, check the error and module import

Expected behavior

import "buf.build/gen/go/mocha/remcall/grpc/go/donut/v1/donutv1grpc"

Actual Behavior

import "buf.build/gen/go/mocha/remcall/grpc/go/mopay/v1/mopayv1grpc"

Your Environment

OS: Windows 11
Go Version: go1.21.0 windows/amd64
Buf Version (local): 1.27.0
Buf Version (Github Action): latest

[johanbrandhorst]

Hi, thanks for your issue. I'm not entirely sure what's going on here - you're saying that the import that's generated by the Buf SDK remote generation is wrong? I don't see any generated files in the repo you linked, so I assume there's something that's going wrong with the remote packages. Have you tried asking for help on the Buf slack? There might be an issue with the gateway but I can't really see it from what you've shared.

[seinshah]

The same issue happened in my case as well. Having two services structured as

-org
--module
---service1
----v1
-----service.proto
---service2
----v1
-----service.proto

I was using the generated SDK for grpc-gateway (plugin version 2.19.1). Initially, when I created the module only org.module.service1.v1 package was available and later I added org.module.service2.v1 package.

I noticed that in the generated grpc-gateway under buf.build/gen/go/<org>/<module>/grpc-ecosystem/gateway/v2/<org>/<module>/service2/v1/service/service2v1gateway/service.pb.gw.go there is an import for the service1v1 grpc client.

Though, this happens only if I use buf.build generated SDKs. If I use buf generate myself with my own buf.gen.yaml everything is fine.