/*

  *   SONEWS News Server

  *   see AUTHORS for the list of contributors

  *

  *   This program is free software: you can redistribute it and/or modify

  *   it under the terms of the GNU General Public License as published by

  *   the Free Software Foundation, either version 3 of the License, or

  *   (at your option) any later version.

  *

  *   This program is distributed in the hope that it will be useful,

  *   but WITHOUT ANY WARRANTY; without even the implied warranty of

  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  *   GNU General Public License for more details.

  *

  *   You should have received a copy of the GNU General Public License

  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.

  */

 package org.sonews.feed;

 import java.util.List;

 import org.sonews.storage.Article;

 import org.sonews.storage.StorageBackendException;

 import org.sonews.storage.StorageManager;

 /**

  * Controlls push and pull feeder.

  * @author Christian Lins

  * @since sonews/0.5.0

  */

 public final class FeedManager 

 {

   public static final int TYPE_PULL = 0;

   public static final int TYPE_PUSH = 1;

   private static PullFeeder pullFeeder = new PullFeeder();

   private static PushFeeder pushFeeder = new PushFeeder();

   /**

    * Reads the peer subscriptions from database and starts the appropriate

    * PullFeeder or PushFeeder.

    */

   public static synchronized void startFeeding()

     throws StorageBackendException

   {

     List<Subscription> subsPull = StorageManager.current()

       .getSubscriptions(TYPE_PULL);

     for(Subscription sub : subsPull)

     {

       pullFeeder.addSubscription(sub);

     }

     pullFeeder.start();

     List<Subscription> subsPush = StorageManager.current()

       .getSubscriptions(TYPE_PUSH);

     for(Subscription sub : subsPush)

     {

       pushFeeder.addSubscription(sub);

     }

     pushFeeder.start();

   }

   public static void queueForPush(Article article)

   {

     pushFeeder.queueForPush(article);

   }

   private FeedManager() {}

 }