ElephantSessionListener.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2021 Lluis Turró Cutiller <http://www.turro.org/>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
package org.turro.elephant.servlet.context;
 
import javax.servlet.http.HttpSessionEvent;
import javax.servlet.http.HttpSessionListener;
import org.turro.util.AtomicCounter;
 
//@WebListener
public class ElephantSessionListener implements HttpSessionListener {
 
  public ElephantSessionListener() {
  }
  
  @Override
  public void sessionCreated(HttpSessionEvent se) {
    activeSessions.increment();
  }
 
  @Override
  public void sessionDestroyed(HttpSessionEvent se) {
    activeSessions.decrement();
  }
 
  private static AtomicCounter activeSessions = new AtomicCounter();
 
  public static AtomicCounter getCounter() {
    return activeSessions;
  }
  
}