/**
* Copyright (c) 2010-2014, openHAB.org and others.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*/
package org.openhab.io.cv.internal.broadcaster;
import java.util.Collection;
import java.util.Collections;
import java.util.WeakHashMap;
import org.atmosphere.cpr.BroadcasterLifeCyclePolicyListener;
import org.atmosphere.jersey.JerseyBroadcaster;
import org.openhab.io.cv.internal.listeners.ResourceStateChangeListener;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* @author Oliver Mazur
* @author Tobias Bräutigam
*
* @since 1.4.0
*/
public class CometVisuBroadcaster extends JerseyBroadcaster {
private static final Logger logger = LoggerFactory.getLogger(CometVisuBroadcaster.class);
protected Collection<ResourceStateChangeListener> listeners = Collections.newSetFromMap(new WeakHashMap<ResourceStateChangeListener, Boolean>());
public CometVisuBroadcaster(String id, org.atmosphere.cpr.AtmosphereConfig config) {
super(id, config);
this.addBroadcasterLifeCyclePolicyListener(new BroadcasterLifeCyclePolicyListener() {
@Override
public void onIdle() {
logger.debug("broadcaster '{}' is idle", this.toString());
}
@Override
public void onEmpty() {
logger.debug("broadcaster '{}' is empty", this.toString());
}
@Override
public void onDestroy() {
logger.debug("broadcaster '{}' destroyed", this.toString());
for (ResourceStateChangeListener l : listeners){
l.unregisterItems();
listeners.remove(l);
}
}
});
}
public void addStateChangeListener(final ResourceStateChangeListener listener){
synchronized (listeners) {
if(listeners.isEmpty()){
listener.setBroadcaster(this);
listener.registerItems();
listeners.add(listener);
}
}
}
}