asocketeventhandler.java

The Staged Event-Driven Architecture (SEDA) is a new design for building scalable Internet services.

/* 
 * Copyright (c) 2000 by Matt Welsh and The Regents of the University of 
 * California. All rights reserved.
 *
 * Permission to use, copy, modify, and distribute this software and its
 * documentation for any purpose, without fee, and without written agreement is
 * hereby granted, provided that the above copyright notice and the following
 * two paragraphs appear in all copies of this software.
 * 
 * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
 * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * 
 * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
 * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
 *
 * Author: Matt Welsh <[e-mail]>
 * 
 */

package seda.sandStorm.lib.aSocket;

import seda.sandStorm.api.*;
import seda.sandStorm.core.*;

import java.net.*;
import java.io.*;
import java.util.*;

/**
 * Abstract superclass of the event handlers used by aSocket.
 */
abstract class aSocketEventHandler implements EventHandlerIF {

  private static final boolean DEBUG = false;

  protected SinkIF eventQ;
  protected SelectSourceIF selsource;

  aSocketEventHandler() {
    this.selsource = aSocketMgr.getFactory().newSelectSource();
  }

  // Used to let ReadStageWrapper get a handle to the selsource
  SelectSourceIF getSelectSource() {
    return selsource;
  }

  public abstract void init(ConfigDataIF config);
  public abstract void destroy();
  public abstract void handleEvent(QueueElementIF qel);
  public abstract void handleEvents(QueueElementIF qelarr[]);

}