How to create pluggable container-monitoring element in GlassFish v3

Friday Sep 11, 2009

For new modules like JRuby which can be added at runtime, it is possible to use v3 monitoring config using pluggability as given in the sample code below.

import org.glassfish.internal.api.Init;
import org.jvnet.hk2.annotations.Service;
import org.jvnet.hk2.component.PostConstruct;
import org.jvnet.hk2.annotations.Inject;
import org.glassfish.api.Startup;
import com.sun.enterprise.config.serverbeans.MonitoringService;
import org.jvnet.hk2.config.SingleConfigCode;
import org.jvnet.hk2.config.ConfigSupport;
import org.glassfish.api.monitoring.ContainerMonitoring;
import org.jvnet.hk2.config.TransactionFailure;
import java.beans.PropertyVetoException;

@Service
public class AddonInit implements PostConstruct {

    @Inject
    MonitoringService ms;

    public void postConstruct() {
        mprint("addon init postConstruct() ...");
        if (ms.getContainerMonitoring("jruby") == null) {
            try {
                ConfigSupport.apply(new SingleConfigCode<MonitoringService>() {
                    public Object run(MonitoringService param)
                    throws PropertyVetoException, TransactionFailure {
                        ContainerMonitoring newItem = param.createChild(ContainerMonitoring.class);
                        newItem.setName("jruby");
                        newItem.setLevel("HIGH");
                        param.getContainerMonitoring().add(newItem);
                        return newItem;
                    }
                }, ms);
            } catch (TransactionFailure tf) {
                // log warning
                // handle exception
            }
        }
    }

    private void mprint(String str) {
        if (debug) {
            System.out.println("... MSR: " + str);
        }
    }

    private final boolean debug = true;
}

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Posted at 02:39PM Sep 11, 2009 by msreddy in Sun
Tags: config glassfish-v3 monitoring pluggability