com.github.mrstampy.esp.neurosky.SubscriptionHandlerAdapter Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of esp Show documentation

ESP - An EEG Signal Processing Library

There is a newer version: 2.1

package com.github.mrstampy.esp.neurosky;

import org.apache.mina.core.session.IoSession;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.github.mrstampy.esp.mutliconnectionsocket.AbstractSubscriptionHandlerAdapter;
import com.github.mrstampy.esp.neurosky.event.AbstractThinkGearEvent;
import com.github.mrstampy.esp.neurosky.event.EventType;
import com.github.mrstampy.esp.neurosky.subscription.NeuroskyMessage;
import com.github.mrstampy.esp.neurosky.subscription.ThinkGearSocketConnector;
import com.github.mrstampy.esp.neurosky.subscription.ThinkGearSubscriptionRequest;

/**
 * This class is used by the {@link MultiConnectionThinkGearSocket} as the
 * adapter for {@link AbstractThinkGearEvent} broadcasting.
 * 
 * @author burton
 * @see MultiConnectionThinkGearSocket
 * @see ThinkGearSocketConnector
 */
public class SubscriptionHandlerAdapter extends
		AbstractSubscriptionHandlerAdapter {
	/**
	 * Set this as a system property on startup ie. -Dsend.neurosky.messages=true
	 * to enable remote programs to send messages to the device. Defaults to
	 * false, will cause a disconnection if the attempt is made when false.
	 */
	public static final String SEND_NEUROSKY_MESSAGES = "send.neurosky.messages";

	private static final Logger log = LoggerFactory.getLogger(SubscriptionHandlerAdapter.class);

	private final boolean sendNeuroskyMessages;

	public SubscriptionHandlerAdapter(MultiConnectionThinkGearSocket socket, boolean canSendNeuroskyMessages) {
		super(socket);

		this.sendNeuroskyMessages = canSendNeuroskyMessages;
	}

	/**
	 * Overridden method to process subscription requests and Neurosky messages
	 * 
	 * @see ThinkGearSubscriptionRequest
	 * @see NeuroskyMessage
	 */
	public void messageReceived(IoSession session, Object message) throws Exception {
		if (message instanceof ThinkGearSubscriptionRequest) {
			subscribe(session, (ThinkGearSubscriptionRequest) message);
		} else if (message instanceof NeuroskyMessage) {
			sendNeuroskyMessage((NeuroskyMessage) message, session);
		}
	}

	public boolean canSendNeuroskyMessages() {
		return sendNeuroskyMessages;
	}

	private void sendNeuroskyMessage(NeuroskyMessage message, IoSession session) {
		if (sendNeuroskyMessages) {
			getSocket().sendMessage(message.getMessage());
		} else {
			log.error("Attempted to send message to Neurosky when functionality disabled, disconnecting: {}",
					message.getMessage());
			session.close(true);
		}
	}

}