Invalid import during code generation

[sagikazarmark]

I would like to use gRPC Gateway, because it looks incredibly awesome, but I encountered the following problem and I haven't been able to solve it so far:

When trying to use Google's http annotations, the generated pb.go file looks a bit strange. It includes the following:

import _ "google/api"

I have to admit that I don't use protoc as it is described in the README, but I think it should work this way too. Furthermore, I've tried every combination of import paths, none of them worked.

I use multiple paths in my GOPATH variable: there is one for package installations (the first) and the other where my code lives. Something like this: $HOME/.go:$HOME/Projects/go

Also, my protoc binary is copied to my own binary prefix. I know that it might not found certain files that way, but I provide an import path for the protobuf protos.

I use Glide for vendoring.

So my actual command is:
protoc -I ${PROTO_PATH} -I vendor/github.com/grpc-ecosystem/grpc-gateway/third_party/googleapis -I vendor/github.com/google/protobuf/src ${PROTO_PATH}/iam/user/v1alpha1/login.proto --go_out=plugins=grpc:apis

As you can see, I add googleapis and protobuf as import path (besides the one where my actual proto file lives).

My proto looks like this:

import "google/api/annotations.proto";

...

service MyService {
    rpc Action (Request) returns (Response){
        option (google.api.http) = { get: "/action" };
    }
}

I believe it should work this way, but it generates a file with the above import. Looking at the examples in this repository I see imports like this:

import _ "google.golang.org/genproto/googleapis/api/annotations"

I'm a little bit confused, because I don't understand how the go protoc plugin guesses where it should look for the generated file of a proto.

Any help would be appreciated, thank you very much in advance.

[sagikazarmark]

Okay, I realized I was using the deprecated way of googleapis import instead of github.com/googleapis/googleapis. This looks like problem solved.

[tmc]

@sagikazarmark can you clarify further here for anyone that might run into the same thing?

[sagikazarmark]

I added the "old" googleapis import path from this repo to the protoc command: -I vendor/github.com/grpc-ecosystem/grpc-gateway/third_party/googleapis

Adding the official googleapis repo as a dependency solved the problem. See the solution here.