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Spring Boot on OpenShift using Groovy

This is a variation of the Spring Boot on OpenShift Example written in groovy.

The purpose of this example is to demonstrate the following:

  • How you can use the openshift-spring-stater.
  • How dekorate detects that this is a web app and automatically configures services and probes.
  • How you can end-to-end test the application.
  • How you can trigger an s2i build after the compilation.

The application is using:


Which contains all the required modules, including the annotation processors that detect spring web applications.

The Main.groovy is annotated with @OpenshiftApplication which triggers the resource generation. This annotation allows the user to trigger an s2i build after the compilation, by passing the system property to the build for example:

mvn clean install

Note: To perform an actual build, the oc binary is required to be configured to point to an existing openhisft environment.

The spring web application processor will detect our, and will:

  • add container port 8080
  • expose port 8080 as a service
  • add readiness and liveness probes.

Integration testing

For the purpose of integration testing it includes:


This annotation will bring in the junit5 extension that dekorate provides, that allows you to run integration tests via the '@OpenshiftIntegrationTest' annotation. The integration test is and it demonstrates:

  • how you can deploy the application for end to end testing
  • how use can use the kubernetes client from within the test to connect to the application.

The test are going to be automatically run when building the application. For example:

mvn clean install

Note: To run the integration tests an actual openshift environment is required.

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