Add new endpoint /api/project_pull_requests/gitlab_report for GitLab

[kakawait]

Fixes #296

The plugin sonar-gitlab-plugin is relying on /api/issues/search with query-parameter pullRequest to retrieve information and generate json.

Unfortunately the pullRequest parameter isn't available for CE edition.

Thus I've created a new endpoint called /api/project_pull_requests/gitlab_report with 2 mands parameters

1. project
2. pullRequest

This endpoint will transform all OPEN issue to GitLab codeclimate json format.

Thus simply add following inside your .gitlab-ci.yml after the analysis to get report (adapt your variables name, only CI_MERGE_REQUEST_IID is predefined)

    - |
      curl -o gl-code-quality-report.json --header "Authorization: Bearer ${SONAR_TOKEN}" "${SONAR_HOST_URL}/api/project_pull_requests/gitlab_report?project=${SONAR_PROJECT_KEY}&pullRequest=${CI_MERGE_REQUEST_IID}"
  artifacts:
    reports:
      codequality: gl-code-quality-report.json

And tada is working

---

The main advantage of this approach is that the current plugin workflow/way-to-do stay untouched. Only new end point is added and GitLab user has to download report by their own

[mc1arke]

I don't understand the statement:

The plugin sonar-gitlab-plugin is relying on /api/issues/search with query-parameter pullRequest to retrieve information and generate json.

Unfortunately the pullRequest parameter isn't available for CE edition.

The pullRequest parameter works if you specify the componentKeys as the project key when the sonarqube-community-branch -plugin is installed, e.g. for a project with key webgoat and a pull request with ID 2, then the request URL would be /api/issues/search?pullRequest=2&componentKeys=webgoat&resolved=false which is what I believe is what https://github.com/javamachr/sonar-gitlab-plugin/blob/e3f46c4ec22c0055f77e80adf48bdcadacad6432/src/main/java/com/talanlabs/sonar/plugins/gitlab/SonarFacade.java#L239 is doing.

Are you able to provide more information about the issue you're encountering?

[kakawait]

Sorry for delay.

Last time I've checked on my own instance, the official api always returned me empty !

Thus i'll double check because now I've doubt

In addition, this new endpoint has advantage to directly return CodeClimate compatible JSON, preventing doing it CI side. But as you may see, transforming isn't the big deal

[fastfend]

Any update on this PR?
Would love to see that merged

[mc1arke]

Based on my last comment, I need a response on why the existing endpoints don't provide the required functionality.

[fastfend]

Great, gonna checkout what proposed endpoint can provide after christmas then