ListenerNotificationQueue.java

package gov.usgs.earthquake.distribution.roundrobinnotifier;

import gov.usgs.earthquake.product.ProductId;
import gov.usgs.earthquake.util.RoundRobinBlockingQueue;

/**
 * A round-robin blocking queue for ListenerNotification objects.
 */
public class ListenerNotificationQueue extends
        RoundRobinBlockingQueue<ListenerNotification> {

    /**
     * Round robin per source + type.
     */
    @Override
    protected String getQueueId(final ListenerNotification notification) {
        ProductId id = notification.getProductId();
        return (id.getSource() + "_" + id.getType()).toLowerCase();
    }

}