snazy / maven-changed-modules

Changed Modules Maven Plugin

Adaptive enablement of Maven plugins during a build based on the changed files.

Project status

• not released yet,
• untested,
• experimental

How it works

• Collects the list of changed files, compared to a base reference. This includes changes committed to git and uncommitted local changes.
• Alternatively the plugin can take a list of files from a provided file.
• Computes the projects from the list of changed files, adds dependants projects.
• Properties will be set on each project that is not in the computed set of projects to disable certain plugins. For example, the property skipTests is set to true to disable running tests for unaffected projects, or better: to only run tests for projects that have been changed and the projects that depend on projects with changed files.

Tips

• Make sure that your CI environment has the configured base reference available.

Example CI setup

Build your proejct in two stages:

1. Something like mvn clean install -DskipTests
2. The following snippet will only let tests (and some other expensive tasks) not run by setting project properties (e.g. skipTest=true).

   mvn verify \
     org.projectnessie.change-projects-maven-plugin:changed-project-maven-plugin:0.1-SNAPSHOT:find
   

Configuration

See Source