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package org.openjdk.jmc.rjmx.test.synthetic;

import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;

import javax.management.MBeanServerConnection;
import javax.management.openmbean.OpenType;
import javax.management.openmbean.SimpleType;

import org.openjdk.jmc.rjmx.subscription.internal.AbstractSyntheticNotification;

public class TestNotification extends AbstractSyntheticNotification {
	private final static AtomicInteger THREAD_ID_PROVIDER = new AtomicInteger();
	private final int notificationId = THREAD_ID_PROVIDER.getAndIncrement();
	private final ScheduledExecutorService executor = Executors.newSingleThreadScheduledExecutor(new ThreadFactory() {
		@Override
		public Thread newThread(Runnable r) {
			return new Thread(r, "TestNotification Executor " + notificationId);
		}
	});
	private int count = 1;

	@Override
	public Object getValue() {
		return count++;
	}

	@Override
	public void init(MBeanServerConnection connection, String type, String message) {
		super.init(connection, type, message);
		executor.scheduleAtFixedRate(new Runnable() {
			@Override
			public void run() {
				triggerNotification();
			}
		}, 5, 100, TimeUnit.MILLISECONDS);
	}

	@Override
	public void stop() {
		executor.shutdownNow();
	}

	@Override
	public OpenType<Integer> getValueType() {
		return SimpleType.INTEGER;
	}

	@Override
	public boolean hasResolvedDependencies(MBeanServerConnection connection) {
		return true;
	}

	@Override
	public String toString() {
		return "TestNotification " + notificationId + " - " + getMessage();
	}
}
