Got stuck trying to report the GO file source paths

[evilguest]

Summary

Hello everyone, I am trying to set up the coverage reporting for the monorepo with a couple of projects written in Go.
The reporting itself does work (see https://coveralls.io/github/kimak-irmagi/taidon).
However, whenever I try to look into the per-file detail, the Coveralls UI shows Source Not Available: https://coveralls.io/builds/77487560/source?filename=app%2Fapp.go

This seems to be caused by the wrong path - the actual path of the referred file is /frontend/cli-go/internal/app/app.go.
I've tried some pre-processing of the coverage file.
This is what being fed to the coveralls:

mode: set
frontend/cli-go/cmd/sqlrs/main.go:15.38,16.37 1 1
frontend/cli-go/cmd/sqlrs/main.go:16.37,18.31 2 1
...
frontend/cli-go/internal/app/app.go:101.2,102.18 2 1
frontend/cli-go/internal/app/app.go:102.18,104.17 2 1
...

Here is the command line:
coveralls report --debug --format golang coverage.out
Here is an excerpt of the coveralls debug output:

 "source_files": [
    {
      "name": "sqlrs/main.go",
      "coverage": [...]

So it looks like the reporter does cut some path prefixes, causing the reference mismatch in the coveralls ui.

Can anyone shed some light on this behavior - how do I prevent it or alter so the sources are properly linked in the coveralls build report?

[afinetooth]

Hi @evilguest. The first issue you were having is based on permissions / access.

This repo:
https://coveralls.io/github/kimak-irmagi/taidon

Did not originally have what we refer to as a repo owner:

The repo owner, typically the user who added the repo to Coveralls.io, is the user whose oauth token is leveraged when Coveralls needs to make general requests of the GitHub API on behalf of the repo.

I made you the repo owner to resolve that issue:

However, I noticed you're still having the SOURCE NOT FOUND issue—for example, for this file:
https://coveralls.io/builds/77585441/source?filename=frontend%2Fcli-go%2Fhttp_client.go

Source Not Available
The file "frontend/cli-go/http_client.go" isn't available on github. Either it's been removed, or the repo root directory needs to be updated.

This means there's a mismatch between the location of the source file at GitHub and its location in CI. The filepath in your coverage report is not the same as the path from your git root directory.

Specifically, it means the file cannot be found at this path, relative to (ie. starting from) your git root directory: frontend/cli-go/http_client.go.

Is it possible it's in a leading subfolder, like src/, or a level higher, for instance, just cli-go/http_client.go?

You will need to figure that out, and to fix it, you can either do that in your CI setup, or utilize the base-path) input option with the Coveralls GitHub Action to translate the path to the file, per: base-path + filename = correct path.

It's a little fiddly, but you can use the two form fields in the SOURCE NOT FOUND page to tweak paths until you can see your source at the resulting page URL:

That will allow you to determine base-path if you're not sure of it.

[evilguest]

Thanks a lot for your reply!

1. I don't see the UI of your screenshot. Coveralls navigation doesn't have an "accessible users" item anywhere, so I couldn't see the owner info (and still cannot).
2. You are right - there is a mismatch between the file location at repository and the path being searched for by the coveralls.
   The file is located at https://github.com/kimak-irmagi/taidon/blob/main/frontend/cli-go/internal/client/http_client.go, i.e. the root-relative path is ./frontend/cli-go/internal/client/http_client.go.
   Note that coveralls looks for the path that misses the middle part:
   ./frontend/cli-go/http_client.go (the internal/client/ part is missing)
   I don't see how to fix this with any combination of the web page settings.
   Nether the base-path parameter seem to be of any help here.
   Please note that the coverage file prepared by the CI toolchain contains the correct paths - see the example in my original post.
   For some reason, the coveralls reporter does strip the path middle parts, which garbles the coveralls.io navigation.

Any advice would be appreciated.