MemoryNotificationListener.java

package railo.commons.management;

import java.lang.management.MemoryNotificationInfo;
import java.lang.management.MemoryType;
import java.util.Map;

import javax.management.Notification;
import javax.management.NotificationListener;
import javax.management.openmbean.CompositeDataSupport;

import railo.aprint;
import railo.runtime.config.Config;

public class MemoryNotificationListener implements NotificationListener {

	private Map<String, MemoryType> types;

	public MemoryNotificationListener(Map<String, MemoryType> types) {
		this.types=types;
	}

	@Override
	public void handleNotification(Notification not, Object handback) {
		
		if (not.getType().equals(MemoryNotificationInfo.MEMORY_THRESHOLD_EXCEEDED)) {
			CompositeDataSupport data=(CompositeDataSupport) not.getUserData();
			
			
			String poolName = (String) data.get("poolName");
			MemoryType type = types.get(poolName);
			if(type==MemoryType.HEAP){
				// clear heap
				aprint.e("Clear heap!");
			}
			else if(type==MemoryType.NON_HEAP) {
				// clear none-heap
				((Config) handback).checkPermGenSpace(false);
			}
			
			/*CompositeDataSupport usage=(CompositeDataSupport) data.get("usage");
			print.e(poolName);
			print.e(types.get(poolName));
			print.e(data.get("count"));
			
			print.e(usage.get("committed"));
			print.e(usage.get("init"));
			print.e(usage.get("max"));
			print.e(usage.get("used"));

			long max=Caster.toLongValue(usage.get("max"),0);
			long used=Caster.toLongValue(usage.get("used"),0);
			long free=max-used;
			print.o("m:"+max);
			print.o("f:"+free);
			print.o("%:"+(100L*used/max));
			//not.*/
		}
		/*
		javax.management.openmbean.CompositeDataSupport(
			compositeType=javax.management.openmbean.CompositeType(
				name=java.lang.management.MemoryUsage,
				items=(
					(itemName=committed,itemType=javax.management.openmbean.SimpleType(name=java.lang.Long)),
					(itemName=init,itemType=javax.management.openmbean.SimpleType(name=java.lang.Long)),
					(itemName=max,itemType=javax.management.openmbean.SimpleType(name=java.lang.Long)),
					(itemName=used,itemType=javax.management.openmbean.SimpleType(name=java.lang.Long)))),contents={committed=101580800, init=65404928, max=110362624, used=101085960})

		
		
		javax.management.openmbean.CompositeDataSupport(
				compositeType=javax.management.openmbean.CompositeType(
					name=java.lang.management.MemoryNotificationInfo,
					items=(
							(itemName=count,itemType=javax.management.openmbean.SimpleType(name=java.lang.Long)),
							(itemName=poolName,itemType=javax.management.openmbean.SimpleType(name=java.lang.String)),
							(itemName=usage,itemType=javax.management.openmbean.CompositeType(name=java.lang.management.MemoryUsage,items=((itemName=committed,itemType=javax.management.openmbean.SimpleType(name=java.lang.Long)),(itemName=init,itemType=javax.management.openmbean.SimpleType(name=java.lang.Long)),(itemName=max,itemType=javax.management.openmbean.SimpleType(name=java.lang.Long)),(itemName=used,itemType=javax.management.openmbean.SimpleType(name=java.lang.Long))))))),contents={count=1, poolName=CMS Old Gen, usage=javax.management.openmbean.CompositeDataSupport(compositeType=javax.management.openmbean.CompositeType(name=java.lang.management.MemoryUsage,items=((itemName=committed,itemType=javax.management.openmbean.SimpleType(name=java.lang.Long)),(itemName=init,itemType=javax.management.openmbean.SimpleType(name=java.lang.Long)),(itemName=max,itemType=javax.management.openmbean.SimpleType(name=java.lang.Long)),(itemName=used,itemType=javax.management.openmbean.SimpleType(name=java.lang.Long)))),contents={committed=101580800, init=65404928, max=110362624, used=101085944})})

		*/
		/*
		print.e(data.getCompositeType());
		print.e(not.getSource().getClass().getName());
		print.e(not.getSource());
		ObjectName on=(ObjectName) not.getSource();
		print.e(on.getKeyPropertyList());
		*/
		
		
		
		/*
		print.e(not.getUserData().getClass().getName());
		print.e(not.getUserData());
		
		print.e(not.getMessage());
		print.e(not.getSequenceNumber());
		print.e(not.getTimeStamp());
		print.e(not.getType());*/
	}

}