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Java 9

The following is a Java 9 proof of concept. It shows how to run the Wildfly Demo with Wildfly 11 using JDK9.

Downloading and Compiling the Example Agent

The promagent-example is built the same way as described in README.md:

Clone Promagent from GitHub:

git clone https://github.com/fstab/promagent.git
cd promagent

The promagent-api and promagent-maven-plugin are not on Maven Central yet. Run the following commands to make them available locally (in ~/.m2/repository/):

cd promagent-framework
mvn clean install
cd ..

Compile the example agent. This should create the file ./promagent-example/target/promagent.jar:

cd promagent-example
mvn clean verify
cd ..

Running the Example with a Java EE Demo Application on Wildfly

Download and unzip the Wildfly Quickstart applications.

curl -LO https://github.com/wildfly/quickstart/files/1257979/wildfly-11.0.0.CR1-quickstarts.zip
unzip wildfly-11.0.0.CR1-quickstarts.zip
cd wildfly-11.0.0.CR1-quickstarts/kitchensink/

Two changes to kitchensink's pom.xml are needed to make it compile with JDK9:

  1. kitchensink uses the maven-enforcer-plugin to ensure Java 1.7 or greater is used. This check fails with Java 9. Add the following to the <build> section in kitchensink's pom.xml to disable the enforce-java-version execution:

    <plugins>
    <plugin>
        <artifactId>maven-enforcer-plugin</artifactId>
        <executions>
            <execution>
                <id>enforce-java-version</id>
                <phase>none</phase>
            </execution>
        </executions>
    </plugin>
</plugins>

  2. The JAXB APIs are no longer contained on the default class path in Java 9. Add it explicitly to the <dependencies> section in kitchensink's pom.xml:

    <dependency>
    <groupId>javax.xml.bind</groupId>
    <artifactId>jaxb-api</artifactId>
    <version>2.3.0</version>
</dependency>

Now kitchensink should build successfully with JDK9.

mvn clean package
cd ../..

Download and extract the Wildfly application server.

curl -O http://download.jboss.org/wildfly/11.0.0.CR1/wildfly-11.0.0.CR1.tar.gz
tar xfz wildfly-11.0.0.CR1.tar.gz
cd wildfly-11.0.0.CR1

Run the Wildfly application server with the Promagent attached.

LOGMANAGER_JAR=$(find $(pwd) -name 'jboss-logmanager-*.jar')
export JAVA_OPTS="
    -Xbootclasspath/a:${LOGMANAGER_JAR}
    -Dsun.util.logging.disableCallerCheck=true
    -Djboss.modules.system.pkgs=org.jboss.logmanager,io.promagent.agent
    -Djava.util.logging.manager=org.jboss.logmanager.LogManager
    -javaagent:../promagent/promagent-dist/target/promagent.jar=port=9300
    ${JAVA_OPTS}
"
./bin/standalone.sh

In a new Shell window, deploy the quickstart application.

cd wildfly-11.0.0.CR1
./bin/jboss-cli.sh --connect --command="deploy ../wildfly-11.0.0.CR1-quickstarts/kitchensink/target/kitchensink.war"

Go to http://localhost:8080/kitchensink to view the quickstart application, go to http://localhost:9300/metrics to view the Prometheus metrics.