/*
   Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License, version 2.0,
   as published by the Free Software Foundation.

   This program is also distributed with certain software (including
   but not limited to OpenSSL) that is licensed under separate terms,
   as designated in a particular file or component or in included license
   documentation.  The authors of MySQL hereby grant you an additional
   permission to link the program and your derivative works with the
   separately licensed software that they have included with MySQL.

   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, version 2.0, for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
*/

#ifndef SD_EVENT_SUB_REQ_H
#define SD_EVENT_SUB_REQ_H

#include "SignalData.hpp"

/**
 * Requests change (new, update, delete) of event subscription,
 * i.e. forwarding of events.
 *
 * SENDER:  Mgm server
 * RECIVER: SimBlockCMCtrBlck
 */

struct EventSubscribeReq {
  /**
   * Receiver(s)
   */
  friend class Cmvmi;

  /**
   * Sender(s)
   */
  friend class MgmtSrvr;

  STATIC_CONST( SignalLength = 2 + LogLevel::LOGLEVEL_CATEGORIES );
  
  /**
   * Note: If you use the same blockRef as you have used earlier, 
   *       you update your ongoing subscription
   */
  Uint32 blockRef;

  /**
   * If you specify 0 entries, it's the same as cancelling an
   * subscription
   */
  Uint32 noOfEntries;
  
  Uint32 theData[LogLevel::LOGLEVEL_CATEGORIES];
  
  EventSubscribeReq& assign (const LogLevel& ll){
    noOfEntries = LogLevel::LOGLEVEL_CATEGORIES;
    for(size_t i = 0; i<noOfEntries; i++){
      theData[i] = Uint32(i << 16) | ll.getLogLevel((LogLevel::EventCategory)i);
    }
    return * this;
  }
};

#endif
