Override sonar projectKey when using maven

Question

I want to group 25 modules under a single project key so I can get a consolidated view of code duplication. However the sonar maven plugin uses the <groupId>:<artifactId> so each project is separate.

I've tried overriding the sonar.projectKey but the maven plugin doesn't consider it.

Is there a way of grouping modules together under a single name so that you can have an aggregate view? Or is there some other in the sonarqube server to get that aggregate view?

Answer 1

As far as I can tell, and contrary to some other forum posts, with at least v3.2 of the maven-sonar-plugin (maybe earlier) the sonar.projectKey property is respected and overrides the default of ${project.groupId}:${project.artifactId}.

Checking the source code also confirms it first looks for the property before defaulting it.

org.sonarsource.scanner.maven.bootstrap.MavenSonarRunner.java

private static void defineProjectKey(MavenProject pom, Properties props) {
  String key;
  if (pom.getModel().getProperties().containsKey(ScanProperties.PROJECT_KEY)) {
    key = pom.getModel().getProperties().getProperty(ScanProperties.PROJECT_KEY);
  } else {
    key = getSonarKey(pom);
  }
  props.setProperty(MODULE_KEY, key);
}

private static String getSonarKey(MavenProject pom) {
  return new StringBuilder().append(pom.getGroupId()).append(":").append(pom.getArtifactId()).toString();
}

org.sonarsource.scanner.api.ScanProperties

String PROJECT_KEY = "sonar.projectKey";

So by setting the following in the POM, for example, the projectKey can be overriden:

<properties>
    <sonar.projectKey>myprefix:${project.groupId}:${project.artifactId}</sonar.projectKey>
</properties>

Tested on Maven 3.3.9. In case this helps anyone!

Link to original GitHub Source: https://github.com/SonarSource/sonar-scanner-maven/blob/master/src/main/java/org/sonarsource/scanner/maven/bootstrap/MavenProjectConverter.java