[Hawkular-dev] hawkular java agent to be merged / released

[John Mazzitelli]

FYI: I am going to merge the PR that introduces the javaagent and then I will release a new agent from that new master branch.

Just to be clear, here is what will then be supported:

1) The Hawkular WildFly Agent (HWFA) remains as-is. Nothing changes. The agent you've come to love and enjoy doesn't change.

2) There is a new Java Agent (HJA) that you can run in any JVM (including but not limited to EAP-based projects). You do so by passing in a "-javaagent" command line option to your JVM (e.g. java -javaagent=hawkular-javaagent.jar=config=config.yaml -jar my-app.jar ...yadda...). There are two additional properties you must set in standalone.conf if you want to run it inside an EAP JVM. The README will have the details.

This new HJA is configured with a yaml file that largely mimics all the standalone.xml data that HWFA has. There is no ${x} support in the YAML file right now.

This new HJA can talk to any EAP or WildFly server over the DMR management API. It can do deployments to your EAP/WildFly servers and monitoring of EAP/WildFly subsystems just like HWFA can.

This new HJA can talk to any JMX server just like HWFA can (it will talk to the local MBeanServer or, if remotely monitoring a JMX server, it will talk to it over Jolokia/REST API).

This new HJA can NOT run directly inside of a Host Controller due to https://issues.jboss.org/browse/WFCORE-2526 - however, you can run HJA externally in its own JVM (e.g. java -jar hawkular-javaagent.jar config=config.yaml) and have its config.yaml point to a remote Host Controller and you'll get the same functionality.

--John Mazz