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/*
 * $Header: /cvs/glassfish/admin/mbeanapi-impl/src/java/com/sun/enterprise/management/j2ee/J2EEClusterImpl.java,v 1.7 2007/05/05 05:23:29 tcfujii Exp $
 * $Revision: 1.7 $
 * $Date: 2007/05/05 05:23:29 $
 */
 
package com.sun.enterprise.management.j2ee;

import java.util.Set;
import java.util.Map;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Collections;

import javax.management.ObjectName;

import com.sun.appserv.management.base.Util;
import com.sun.appserv.management.util.misc.GSetUtil;
import com.sun.appserv.management.util.misc.ExceptionUtil;

import com.sun.appserv.management.j2ee.J2EECluster;

import com.sun.appserv.management.j2ee.J2EETypes;

import com.sun.appserv.management.j2ee.StateManageable;


import com.sun.enterprise.management.support.Delegate;
import com.sun.enterprise.management.support.oldconfig.OldClusterMBean;
import com.sun.enterprise.management.support.oldconfig.OldClustersMBean;

import com.sun.enterprise.admin.servermgmt.RuntimeStatusList;
import com.sun.enterprise.admin.servermgmt.RuntimeStatus;

/**
	JSR 77 extension representing an Appserver Cluster
 */
public final class J2EEClusterImpl
	extends J2EELogicalServerImplBase 
{
		public
	J2EEClusterImpl( final Delegate delegate )
	{
		super( J2EETypes.J2EE_CLUSTER, delegate );
	}
	
		public String[]
	getServerNames()
	{
		/*
			J2EEServer is not a subtype of J2EECluster in the containment hierarchy. 
			So the following doesnot work.			
			return getContaineeNamesOfType( J2EETypes.J2EE_SERVER );
		 */
		return getOldClusterMBean().listServerInstancesAsString( false );
    }
	
		public Map<String,ObjectName>
	getServerObjectNameMap()
	{
		/*
			J2EEServer is not a subtype of J2EECluster in the containment hierarchy. 
			So the following does not work.
            return getContaineeObjectNameMap( J2EETypes.J2EE_SERVER );
         */
		final Set<String> serverNamesInCluster	= GSetUtil.newStringSet( getServerNames() );
		if ( serverNamesInCluster.size() == 0 )
		{
			return Collections.emptyMap();
		}
		final Set<ObjectName> allJ2EEServerObjectNames = 
			getQueryMgr().queryJ2EETypeObjectNameSet( J2EETypes.J2EE_SERVER );
		final Map<String,ObjectName> objectNameMap = Util.createObjectNameMap( allJ2EEServerObjectNames );

		final Map<String,ObjectName> serverObjectNameMap =
		    new HashMap<String,ObjectName>( serverNamesInCluster.size() );

		for( final String nameKey : serverNamesInCluster )
		{
			serverObjectNameMap.put( nameKey, objectNameMap.get( nameKey ) );
		}
		return serverObjectNameMap;
	}

		public boolean
	isstateManageable()
	{
		return true;
	}

		public void
	start()
	{
		trace( "J2EEClusterImpl.start" );
		getOldClusterMBean().start();
		setstartTime( System.currentTimeMillis() );
	}

		public void
	startRecursive()
	{
		start();
	}

		public void
	stop()
	{
		trace( "J2EEClusterImpl.start" );
		getOldClusterMBean().stop();
		setstartTime( 0 );
	}

		public int
	getstate()
	{
		final RuntimeStatusList rsl = getRuntimeStatus();
		int state = rsl.anyRunning() ? 
			StateManageable.STATE_RUNNING : StateManageable.STATE_STOPPED;
		return state;
	}
		private OldClusterMBean
	getOldClusterMBean()
	{
		return( getOldConfigProxies().getOldClusterMBean( getSelfName() ) );
	}

		private RuntimeStatusList
	getRuntimeStatus()
	{
		/**
			Should have called OldClusterMBean.getRuntimeStatus() instead. 
			But was getting back AttributeNotFoundException. Maybe bacause
			RuntimeStatus is not exposed as an attribute of the ClusterConfigMBean.
		 */
		final OldClustersMBean oldMBean = 
			getOldConfigProxies().getOldClustersMBean();
		return( ( RuntimeStatusList )oldMBean.getRuntimeStatus( getSelfName() ) );
	}
}