Node.java

import java.util.*;
import java.io.*;
import java.net.*;

/*
 * Node is the interface for the classes Publisher, Broker, Consumer.
 * All instances of classes that extend this have access to all the 
 * ports/ip that each Publisher/Broker uses.
 */

public interface Node {
	public static final String ip = "0.0.0.0"; // ADD YOUR IP HERE
	public static final int FIRSTPUBLISHER = 4321;
	public static final int SECONDPUBLISHER = 3421;
	public static final int THIRDPUBLISHER = 5000;
	public static final int FIRSTBROKER = 4000;
	public static final int SECONDBROKER = 5555;
	public static final int THIRDBROKER = 5984;
	public static List<Broker> brokers = new ArrayList<>();
	
	public void init(int port) throws UnknownHostException, IOException;
	
	public List<Broker> getBrokers();
	
	public void connect();
	
	public void disconnect();
	
	public void updateNodes();
}