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package com.sun.appserv.naming;

import java.util.List;

import com.sun.corba.ee.spi.folb.GroupInfoServiceObserver;
import com.sun.corba.ee.spi.folb.GroupInfoService;
import com.sun.corba.ee.spi.folb.ClusterInstanceInfo;
import com.sun.corba.ee.impl.orbutil.ORBConstants;

import com.sun.enterprise.util.ORBManager;
import java.util.logging.Logger;
import java.util.logging.Level;
import com.sun.logging.LogDomains;


/**
 * Called when the GroupInfoService that you register with
 * has a change.  You should call the GroupInfoService
 * <code>getClusterInstanceInfo</code> method to get
 * updated info.
 * @author Sheetal Vartak
 */
public class GroupInfoServiceObserverImpl 
    implements GroupInfoServiceObserver {

    protected final Logger _logger = LogDomains.getLogger(
					   LogDomains.JNDI_LOGGER);  
    private GroupInfoService gis;

    public GroupInfoServiceObserverImpl(GroupInfoService gis) {
	this.gis = gis;
    }

    public void membershipChange() {

	try {	 	    
	    List<ClusterInstanceInfo> instanceInfoList = gis.getClusterInstanceInfo((String[])null);
	    if (instanceInfoList != null && instanceInfoList.size() > 0) {
	        S1ASCtxFactory.getRRPolicy().setClusterInstanceInfo(instanceInfoList);
	    }
	} catch(Exception e) {
	    _logger.log(Level.SEVERE, "groupinfoservice.membership.notification.problem", new Object[] {e});
	}
    }

}