Build process and continuous integration


Build automation tool

Keyple uses Gradle.


Versioning rules

Keyple components are versioned according to Semantic Versioning 2.0.0 which is based on the three numbers X.Y.Z

For API components (i.e. artifacts suffixed with -api), the incrementation of Z indicates only a documentation update.

Continuous integration

Keyple continuous integration works with the Jenkins server of the Eclipse Foundation.

The build process uses the home-made gradle plugin Keyple Gradle available directly from the Maven Central Repository and whose sources are available on GitHub.

The CI automates the following tasks (defined in the Jenkinsfile file):

  • verify the validity of the version;
  • verify the code formatting using Spotless;
  • build the code;
  • execute unit tests;
  • sign and publish artifacts to Maven Central Repository;
  • publish the javadoc to the corresponding GitHub Pages;
  • publish the code quality report to SonarCloud.

Snapshot publication

A snapshot artifact (suffixed with -SNAPSHOT) is automatically published after each commit on the main branch, except in the case of a release (see Release publication).

The artifact version defined in the gradle.properties file must not have a -SNAPSHOT suffix because the suffix is automatically added by the Keyple Gradle plugin.

Release publication

A release artifact is automatically published if and only if the following two conditions are met:

  • The commit is done on the main branch or on a release-X.Y.Z branch.
  • The commit message starts with Release X.Y.Z.
X.Y.Z must be the version defined in the gradle.properties file.

Integration tests

Integration tests are defined in an independent GitHub repository: keyple-integration-java-test

Release procedure

  1. Create a branch dedicated to the current release.
  2. Check gradle.properties file:
    • Check the consistency of the version.
  3. Check build.gradle.kts file:
    • Use only released dependencies.
    • Upgrade Keyple dependencies to their latest released versions.
  4. Update CHANGELOG.md file:
    • Verify the consistency of the Unreleased section.
    • Move content of Unreleased section to a new “release” section.
    • Update bottom links.
  5. Build and test the component.
  6. Commit the modified files using the commit message Release x.y.z.
  7. Push and create a pull request to merge the branch into main.
  8. Await the success of the build by the CI.
  9. Squash and merge the pull request.
  10. Await the success of the build by the CI.
  11. Connect to Nexus Repository Manager of Eclipse Keyple and go to “Staging Repositories” page:
    • Select the correct folder to Close & Release. It must contain the manifests, the JAR and all the others elements (sources, javadoc).
    • Close the folder.
    • Release the folder.
    • The other unwanted folders could be dropped.
  12. Check the availability of the release on the Maven Repository. This step may take from 10 minutes to 2 hours.
  13. Create a release on GitHub:
    • Set tag x.y.z
    • Set release name x.y.z
    • Set the content by copying/pasting the content of the current release description in the CHANGELOG.md file without the bottom links.
  14. Update this website:
    • Update version in params.yaml file.
    • Update table content of dependency-check.md file.
    • Update others elements if needed (user guides, developer guides, etc…).
    • Commit and push the modifications.
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