In this blog post, I will describe how to deploy the CloudEE Duke application packaged in a WildFly Swarm über-jar to Oracle Application Container Cloud.

The deployment artifact required for deployment in Oracle Application Container Cloud is a ZIP archive containing the application über-jar and a manifest file (manifest.json). The WildFly Swarm version of the manifest.json for CloudEE Duke is listed below.

manifest.json

{
 "runtime": {
 "majorVersion": "8"
 },
 "command": "java -Dswarm.http.port=$PORT -Dswarm.bind.address=$HOSTNAME -jar cloudee-duke-swarm.jar",
 "release": {
 "version": "1.0",
 "build": "1",
 "commit": "123"
 },
 "notes": "Dukes says hello from Swarm"
}

You need to specify the port and host for WildFly Swarm in the startup command. This is done by using the $PORT and $HOSTNAME environment variables.

The über-jar is produced by using the WildFly Swarm Maven Plugin:

<plugin>
 <groupId>org.wildfly.swarm</groupId>
 <artifactId>wildfly-swarm-plugin</artifactId>
 <version>${version.wildfly.swarm}</version>
 <executions>
 <execution>
 <goals>
 <goal>package</goal>
 </goals>
 </execution>
 </executions>
</plugin>

See the complete pom.xml for an example on how to produce the deployable ZIP archive with the maven command:

	
mvn clean package assembly:single -Pswarm

This will produce a file called cloudee-duke-oracle-swarm.zip  in the target folder. This is the ZIP archive you will deploy to Oracle Application Container Cloud as shown in the screenshot below.

👁 Image

When your application is deployed, you should be able to access the hello endpoint

https://<dependsonyouraccount>.oraclecloud.com/hello

Duke says Hello!

You will also have the health and metrics endpoints provided by the MicroProfile implementation

https://<dependsonyouraccount>.oraclecloud.com/health

{
outcome: “UP”,
checks: [ ]
}

https://<dependsonyouraccount>.oraclecloud.com/metrics

# HELP base:classloader_total_loaded_class_count Displays the total number of classes that have been loaded since the Java virtual machine has started execution.
# TYPE base:classloader_total_loaded_class_count counter
base:classloader_total_loaded_class_count 14170.0
…