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In this sample application, you will create a Java Liberty microservice. This provides a starting point for creating Java microservice applications running on WebSphere Liberty. It contains no default application code, but comes with standard best practices, including a health check.
The context root is set in the src/main/webapp/WEB-INF/ibm-web-ext.xml file. The ports are set in the pom.xml file and exposed to the CLI in the cli-config.yml file. The microservice application has a health endpoint which is accessible at <host>:<port>/javalibertymicroservice/health.
You can deploy this application to IBM Cloud or build it locally by cloning this repo first. Once your app is live, you can access the /health endpoint to build out your cloud native application.
Click Deploy to IBM Cloud to deploy this same application to IBM Cloud. This option creates a deployment pipeline, complete with a hosted GitLab project and a DevOps toolchain. You can deploy your app to Cloud Foundry, a Kubernetes cluster, or a Red Hat OpenShift cluster. OpenShift is available only through a standard cluster, which requires you to have a billable account.
IBM Cloud DevOps services provides toolchains as a set of tool integrations that support development, deployment, and operations tasks inside IBM Cloud.
To get started building this application locally, you can either run the application natively or use the IBM Cloud Developer Tools for containerization and easy deployment to IBM Cloud.
- Maven
- Java 8: Any compliant JVM should work.
- Java 8 JDK from Oracle
- Java 8 JDK from IBM (AIX, Linux, z/OS, IBM i), or Download a Liberty server package that contains the IBM JDK (Windows, Linux)
To build and run the application:
mvn installmvn liberty:run-server
To run an application in Docker use the Docker file called Dockerfile. If you do not want to install Maven locally you can use Dockerfile-tools to build a container with Maven installed.
Install IBM Cloud Developer Tools on your machine by running the following command:
curl -sL https://ibm.biz/idt-installer | bash
Create an application on IBM Cloud by running:
ibmcloud dev createThis will create and download a starter application with the necessary files needed for local development and deployment.
Your application will be compiled with Docker containers. To compile and run your app, run:
ibmcloud dev build
ibmcloud dev runThis will launch your application locally. When you are ready to deploy to IBM Cloud on Cloud Foundry or Kubernetes, run one of the commands:
ibmcloud dev deploy -t buildpack // to Cloud Foundry
ibmcloud dev deploy -t container // to K8s clusterYou can build and debug your app locally with:
ibmcloud dev build --debug
ibmcloud dev debug- Learn more about augmenting your Java applications on IBM Cloud with the Java Programming Guide.
- Explore other sample applications on IBM Cloud.
This sample application is licensed under the Apache License, Version 2. Separate third-party code objects invoked within this code pattern are licensed by their respective providers pursuant to their own separate licenses. Contributions are subject to the Developer Certificate of Origin, Version 1.1 and the Apache License, Version 2.