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About Ivar Grimstad

Ivar Grimstad
Ivar Grimstad is an experienced software architect focusing on Enterprise Java. He is participating in the Java Community Process as a member of the Expert Groups for JSR 368 (JMS 2.1), JSR 371 (MVC 1.0), JSR 375 (Java EE Security API). He is also a member of the NetBeans Dream Team.

WildFly Swarm on Oracle Application Container Cloud

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.

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

Published on Java Code Geeks with permission by Ivar Grimstad, partner at our JCG program. See the original article here: WildFly Swarm on Oracle Application Container Cloud

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