Quarkus microservice

In this sample application, you will create a basic Java web application using Quarkus. This provides a starting point for creating Java microservice applications running as a native application on GraalVM. It contains application code with a simple /hello endpoint, a swagger UI and a health check at /health.

Steps

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 /hello endpoint to build out your cloud native application.

Deploying

After you have created a new git repo from this git template, remember to rename the project. Edit the pom.xml and change the artifactId from the default name to the name you used to create the template.

Make sure you are logged into the IBM Cloud using the IBM Cloud CLI and have access to you development cluster. If you are using OpenShift make sure you have logged into the OpenShift CLI on the command line.

Install the IBM Garage for Cloud CLI.

npm i -g @garage-catalyst/ibm-garage-cloud-cli

Use the IBM Garage for Cloud CLI to register the GIT Repo

igc pipeline -n dev --tekton --pipeline ibm-java-maven 

See the Deploy an app guide in the IBM Cloud-Native toolkit for details.

Building Locally

To get started building this application locally you need to install

• Maven
• JDK 11+

Use the following command to build and run an application:

./mvnw quarkus:dev

More Details

For more details on how to use this Starter Kit Template please review the IBM Garage for Cloud Cloud-Native Toolkit Guide

Creating this Starter Kit Template

This Starter Kit Template is based on Quarkus Bootstrapping the project.

It was bootstrapped with the command:

mvn io.quarkus:quarkus-maven-plugin:1.12.0.Final:create \
    -DprojectGroupId=com.ibm \
    -DprojectArtifactId=template-quarkus \
    -DclassName="com.ibm.GreetingResource" \
    -Dpath="/hello" \
    -Dextensions="smallrye-openapi, quarkus-resteasy-jsonb, quarkus-smallrye-opentracing"

OpenTracing

OpenTracing support was added automatically with extensions="quarkus-smallrye-opentracing" above.

Added properties to src/main/resources/application.properties file to configure tracing.

• quarkus.jaeger.service-name define the name of the service tracing is collected for. Update this name for your service.
• quarkus.jaeger.sampler-type use a constant sampling strategy.
• quarkus.jaeger.sampler-param sample all requests
• quarkus.log.console.format add trace IDs to the log messages.

These properties can be set via environment variables instead.

Added Logger to GreetingResource.java to illustrate log messages with trace IDs.

OpenAPI and Swagger

OpenAPI and Swagger support was added automatically with the extensions="smallrye-openapi" above.

• Once your application is started, you can make a request to the /q/openapi endpoint to get the API Documentation.
• The Swagger UI can be located at /q/swagger-ui
• For more information on OpenAPI and Swagger support click here

Cloud-Native Toolkit

To add support for the Cloud-Native Toolkit CI/CD pipelines

1. the Docker file was added based on this guide.
2. The .dockerignore file was updated to remove the * line.

# *
!target/*-runner
!target/*-runner.jar
!target/lib/*
!target/quarkus-app/*

3. The helm charts in the chart folder were added.

Health check

Create the /health health check endpoint

1. Add the /health health check endpoint with the src/main/java/com/ibm/HealthResource.java file.
2. Add the health check test with the src/test/java/com/ibm/HealthResourceTest.java file.

SonarQube support

Support for running the SonarQube CLI was added.

1. The sonar-project.properties file was added. The values in this file should be updated to match your project.

2. The pom.xml file was modified to enable code coverage using JaCoCo based on this guide. Changes to the file are:

   • Add jacoco.version property

   <properties>
       ...
       <jacoco.version>0.8.6</jacoco.version>
   </properties>
   

   • Add the jacoco-maven-plugin plugin

       </plugins>
       ....
       <plugin>
           <groupId>org.jacoco</groupId>
           <artifactId>jacoco-maven-plugin</artifactId>
           <version>${jacoco.version}</version>
           <executions>
               <execution>
                   <id>default-prepare-agent</id>
                   <goals>
                       <goal>prepare-agent</goal>
                   </goals>
               </execution>
               <execution>
                   <id>default-report</id>
                   <phase>test</phase>
                   <goals>
                       <goal>report</goal>
                   </goals>
                   <configuration>
                       <dataFile>${project.build.directory}/jacoco.exec</dataFile>
                       <outputDirectory>${project.reporting.outputDirectory}/jacoco</outputDirectory>
                   </configuration>
               </execution>
           </executions>
       </plugin>
       </plugins>
   

Next Steps

• Learn more about Quarkus.
• Explore other sample applications on IBM Cloud.

License

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.

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