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Supplies the classes required for monitoring a server with the Amentet Monitoring Service

There is a newer version: 2.9

package com.addc.server.commons.monitored;

import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;

import org.omg.CORBA.SystemException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationContext;

import com.addc.server.AppContextHelper;
import com.addc.server.commons.ManagedObject;
import com.addc.server.monitoring.MonitoredException;
import com.addc.server.monitoring.MonitoredPOA;

/**
 * The MonitoredImpl supplies an implementation of the Monitored IDL interface.
 */
public class MonitoredImpl extends MonitoredPOA {
    private static final Logger LOGGER= LoggerFactory.getLogger(MonitoredImpl.class);
    private MonitoringClient monitorThread;

    /**
     * Create a new MonitoredImpl
     */
    public MonitoredImpl() {
    }

    @Override
    public void ping() throws MonitoredException {
        List errors= new ArrayList<>();
        List components= getMonitoringClient().getMonitoredComponents();
        List lost= new LinkedList<>();
        for (ManagedObject mo : components) {
            try {
                if (mo.getObjectRef()._non_existent()) {
                    errors.add(mo.getCorbaloc() + " has been destroyed");
                    lost.add(mo);
                }
            } catch (SystemException e) {
                LOGGER.error("Unexpected CORBA Exception", e);
            }
        }
        if (!errors.isEmpty()) {
            LOGGER.warn("One or more managed Objects have been destroyed: {}", errors);
            for (ManagedObject mo : lost) {
                monitorThread.removeComponent(mo);
            }
            throw new MonitoredException(errors.toArray(new String[0]));
        }
    }

    @Override
    public String[] monitoredComponents() {
        return getMonitoringClient().getMonitoredComponentCorbalocs();
    }

    /**
     * Get a reference to the injected MonitoringClient
     *
     * @return a reference to the injected MonitoringClient
     */
    MonitoringClient getMonitoringClient() {
        if (monitorThread == null) {
            ApplicationContext context= AppContextHelper.getInstance().getAppContext();
            MonitoringClientFactory bean= context.getBean("orbWrapper", MonitoringClientFactory.class);
            monitorThread= bean.getMonitoringClient();
        }
        return monitorThread;
    }

}