| `SONAR_SCANNER_IMAGE` | The Docker image used to run [sonar-scanner](https://docs.sonarqube.org/latest/analysis/scan/sonarscanner/) | `sonarsource/sonar-scanner-cli:latest` |
| `SONAR_URL` | SonarQube server url | _none_ (disabled) |
| :lock: `SONAR_AUTH_TOKEN`| SonarQube authentication [token](https://docs.sonarqube.org/latest/user-guide/user-token/)(depends on your authentication method) | _none_ |
| `SONAR_HOST_URL` | SonarQube server url | _none_ (disabled) |
| `SONAR_PROJECT_KEY` | SonarQube Project Key (might also be set in the `sonar-project.properties` file) | fallbacks to `$CI_PROJECT_PATH_SLUG` (see below) |
| `SONAR_PROJECT_NAME` | SonarQube Project Name (might also be set in the `sonar-project.properties` file) | fallbacks to `$CI_PROJECT_PATH` (see below) |
| :lock: `SONAR_TOKEN` | SonarQube authentication [token](https://docs.sonarqube.org/latest/user-guide/user-token/)(depends on your authentication method) | _none_ |
| :lock: `SONAR_LOGIN` | SonarQube login (depends on your authentication method) | _none_ |
| :lock: `SONAR_PASSWORD` | SonarQube password (depends on your authentication method) | _none_ |
| :lock: `SONAR_GITLAB_TOKEN` | GitLab [access token](https://docs.gitlab.com/ee/user/profile/personal_access_tokens.html) with `api` scope. When set, activates the [Sonar GitLab plugin](https://github.com/gabrie-allaigre/sonar-gitlab-plugin/#plugins-properties) integration. | _none_ |
| `SONAR_BRANCH_ANALYSIS_DISABLED` | Set to `true` to disable automatic [Pull Request Analysis](https://docs.sonarqube.org/latest/analysis/pull-request/) and [Branch Analysis](https://docs.sonarqube.org/latest/branches/overview/) | _none_ (enabled) |
| `SONAR_GITLAB_ARGS` | Extra arguments to use with [Sonar GitLab plugin](https://github.com/gabrie-allaigre/sonar-gitlab-plugin/#plugins-properties) | `-Dsonar.gitlab.url=${CI_SERVER_URL} -Dsonar.gitlab.user_token=${SONAR_GITLAB_TOKEN} -Dsonar.gitlab.project_id=${CI_PROJECT_ID} -Dsonar.gitlab.commit_sha=${CI_COMMIT_SHA} -Dsonar.gitlab.ref_name=${CI_COMMIT_REF_NAME}` |
By default, this template tries to auto-detect and use [Pull Request Analysis](https://docs.sonarqube.org/latest/analysis/pull-request/) or [Branch Analysis](https://docs.sonarqube.org/latest/branches/overview/)(depending on the context).
This template relies on SonarScanner's [GitLab integration](https://docs.sonarqube.org/latest/analysis/gitlab-integration), that is able to auto-detect whether to launch Branch Analysis or Merge Request Analysis
from GitLab's environment variables.
Those is a great SonarQube features but it assumes one of the following conditions:
:warning: This feature also depends on your SonarQube server version and license.
If using Community Edition, you'll have to install the [sonarqube-community-branch-plugin](https://github.com/mc1arke/sonarqube-community-branch-plugin) to enable automatic Branch & Merge Request analysis (only works from SonarQube version 8).
* you are using a [Developer Edition](https://www.sonarqube.org/developer-edition/) version,
* or you are using Community Edition with an opensource plugin emulating those features, such as [sonarqube-community-branch-plugin](https://github.com/mc1arke/sonarqube-community-branch-plugin).
:warning: Merge Request Analysis only works if you're running [Merge Request pipeline](https://docs.gitlab.com/ee/ci/yaml/workflow.html#switch-between-branch-pipelines-and-merge-request-pipelines) strategy (default).
If you're not in one of those cases, then you shall disable this feature by setting `SONAR_BRANCH_ANALYSIS_DISABLED`.
### Configuring SonarQube project key, project name and other parameters
If you leave the feature enabled, if `SONAR_GITLAB_TOKEN` is provided, the template will try to autodetect (using GitLab APIs) an opened merge request matching the current branch:
You shall define your SonarQube project key and project name in a `sonar-project.properties` file located at the root of your repository (as respectively `sonar.projectKey` and `sonar.projectName` entries), although they might alternately be set as `$SONAR_PROJECT_KEY` and `$SONAR_PROJECT_NAME` variables.
* If one is found, a SonarQube [Pull Request Analysis](https://docs.sonarqube.org/latest/analysis/pull-request/) will be made.
* Otherwise, a simple [Branch Analysis](https://docs.sonarqube.org/latest/branches/overview/) is performed on the current branch.
Note that when not explictly set, the template will use `$CI_PROJECT_PATH_SLUG` and `$CI_PROJECT_PATH` as fallback project key and project name.
### About Sonar GitLab plugin
The `sonar-project.properties` file is also the recommended way to configure other SonarQube [analysis parameters](https://docs.sonarqube.org/latest/analysis/analysis-parameters/)
as well as [language specific parameters](https://docs.sonarqube.org/latest/analysis/languages/overview/).
The [Sonar GitLab plugin](https://github.com/gabrie-allaigre/sonar-gitlab-plugin) uses the GitLab APIs to inline comments
into your commits directly in GitLab for each new anomaly.
As explained above, this template automatically enables the Sonar GitLab plugin if `SONAR_GITLAB_TOKEN` is set.
It will then simply append the `SONAR_GITLAB_ARGS` (overridable) to the SonarQube analysis arguments.
Comments added to GitLab will appear as owned by the user associated to the GitLab [access token](https://docs.gitlab.com/ee/user/profile/personal_access_tokens.html).
### How should I configure other SonarQube arguments ?
The simplest and recommended way to configure other SonarQube [analysis arguments](https://docs.sonarqube.org/latest/analysis/analysis-parameters/)
(and even [language specific args](https://docs.sonarqube.org/latest/analysis/languages/overview/)) is to use a
`sonar-project.properties` file at the root of your repository.
Each _to-be-continuous_ build template shall briefly document the supported language-specific SonarQube parameters.
"description":"GitLab API access token. When set, activates the [Sonar GitLab plugin](https://github.com/gabrie-allaigre/sonar-gitlab-plugin/#plugins-properties) integration, and enables SonarQube [Pull Request Analysis](https://docs.sonarqube.org/latest/analysis/pull-request/)",
"secret":true
},
{
"name":"SONAR_BRANCH_ANALYSIS_DISABLED",
"description":"Set to disable automatic [Pull Request Analysis](https://docs.sonarqube.org/latest/analysis/pull-request/) and [Branch Analysis](https://docs.sonarqube.org/latest/branches/overview/)",