Can't generate grpc files for go

Question

There is a directory

├── cmd │ └── main.go ├── go.mod └── proto └── forward.proto

write in the terminal

protoc --go_out=. --go_opt=paths=source_relative \ --go-grpc_out=. --go-grpc_opt=paths=source_relative \ proto/forward.proto

I get the error

protoc-gen-go: invalid Go import path "forward" for "proto/forward.proto"

The import path must contain at least one forward slash ('/') character.

See https://developers.google.com/protocol-buffers/docs/reference/go-generated#package for more information.

--go_out: protoc-gen-go: Plugin failed with status code 1. a.mamedov@a-mamedov forward-spinner %

How to fix it and generate grpc for forward.proto file?

Please check this SO answer that describes go_option you can use to generate proto code. — Oleg Butuzov
– Oleg Butuzov, Commented Aug 3, 2021 at 14:33
the error msg shows the error, please post your proto file, especially the import and option part — PapEr
– PapEr, Commented Aug 4, 2021 at 3:31
btw, this may help github.com/techschool/pcbook-go/issues/3#issuecomment-821860413 — PapEr
– PapEr, Commented Aug 4, 2021 at 3:35

Yar · Accepted Answer · 2021-10-26 06:48:03Z

The problem lies on the .proto file, in line option go_package="forward";.

In order to compile the code just add ./ in front of the require file:

option go_package="./forward";

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