/**
*    Copyright 2011, Big Switch Networks, Inc. 
*    Originally created by David Erickson, Stanford University
* 
*    Licensed under the Apache License, Version 2.0 (the "License"); you may
*    not use this file except in compliance with the License. You may obtain
*    a copy of the License at
*
*         http://www.apache.org/licenses/LICENSE-2.0
*
*    Unless required by applicable law or agreed to in writing, software
*    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
*    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
*    License for the specific language governing permissions and limitations
*    under the License.
**/

package net.floodlightcontroller.core;

import org.openflow.protocol.OFMessage;
import org.openflow.protocol.OFType;

/**
 *
 *
 * @author David Erickson (daviderickson@cs.stanford.edu)
 */
public interface IOFMessageListener extends IListener<OFType> {
  /**
   * This is the method Floodlight uses to call listeners with OpenFlow messages
   * @param sw the OpenFlow switch that sent this message
   * @param msg the message
   * @param cntx a Floodlight message context object you can use to pass 
   * information between listeners
   * @return the command to continue or stop the execution
   */
  public Command receive(IOFSwitch sw, OFMessage msg, FloodlightContext cntx);
}