/* Copyright (c) 2008, 2013, 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 Street, Fifth Floor, Boston, MA 02110-1301, USA */

#ifndef DIH_SCAN_TAB_HPP
#define DIH_SCAN_TAB_HPP

#include "SignalData.hpp"

#define JAM_FILE_ID 108


/**
 * DihScanTabReq
 */
struct DihScanTabReq
{
  STATIC_CONST( SignalLength = 4 );
  STATIC_CONST( RetryInterval = 5 );

  Uint32 tableId;
  Uint32 senderData;
  Uint32 senderRef;
  Uint32 schemaTransId;
};

/**
 * DihScanTabConf
 */
struct DihScanTabConf
{
  STATIC_CONST( SignalLength = 6 );
  STATIC_CONST( InvalidCookie = RNIL );

  Uint32 tableId;
  Uint32 senderData;
  Uint32 fragmentCount;
  Uint32 noOfBackups;
  Uint32 scanCookie;
  Uint32 reorgFlag;
};

struct DihScanGetNodesReq
{
  STATIC_CONST( FixedSignalLength = 4 );
  STATIC_CONST( MAX_DIH_FRAG_REQS = 64); // Max #FragItem in REQ/CONF

  Uint32 tableId;
  Uint32 senderRef;
  Uint32 scanCookie;
  Uint32 fragCnt;

  struct FragItem
  {
    STATIC_CONST( Length = 2 );

    Uint32 senderData;
    Uint32 fragId;
  };

  /**
   * DihScanGetNodesReq request information about specific fragments.
   * - These are either specified in a seperate section (long request)
   *   containing multiple FragItems.
   * - Or directly in a single fragItem[] below (short signal) if it 
   *   contain only a single FragItem.
   */
  FragItem fragItem[1];
};

struct DihScanGetNodesConf
{
  STATIC_CONST( FixedSignalLength = 2 );
  Uint32 tableId;
  Uint32 fragCnt;

  struct FragItem
  {
    STATIC_CONST( Length = 8 );

    Uint32 senderData;
    Uint32 fragId;
    Uint32 instanceKey;
    Uint32 count;
    Uint32 nodes[4];
  };

  /**
   * DihScanGetNodesConf supply information about specific fragments.
   * - These are either specified in a seperate section (long request)
   *   containing multiple FragItems.
   * - Or directly in a single fragItem[] below (short signal) if it 
   *   contain only a single FragItem.
   * Type of long/short Conf-reply will always be the same as the REQuest
   */
  FragItem fragItem[1];
};

struct DihScanGetNodesRef
{
  STATIC_CONST( FixedSignalLength = 3 );
  Uint32 tableId;
  Uint32 fragCnt;
  Uint32 errCode;

  /**
   * DihScanGetNodesRef signals failure of a DihScanGetNodesReq.
   * As this is likely due to a sectioned memory alloc failure,
   * we avoid further alloc problems by returning the same FragItem[]
   * list as in the DihScanGetNodesReq.
   *
   * Depending on 'fragCnt', the fragItem[] is either:
   * - These are either specified in a seperate section (long request)
   *   containing multiple FragItems.
   * - Or directly in a single fragItem[] below (short signal) if it 
   *   contain only a single FragItem.
   */
  typedef DihScanGetNodesReq::FragItem FragItem; // Reused, see above

  FragItem fragItem[1];
};

/**
 * DihScanTabRef
 */
struct DihScanTabRef
{
  enum ErrorCode {
    ErroneousState = 0,
    ErroneousTableState = 1
  };
  STATIC_CONST( SignalLength = 5 );

  Uint32 tableId;
  Uint32 senderData;
  Uint32 error;
  Uint32 tableStatus; // Dbdih::TabRecord::tabStatus
  Uint32 schemaTransId;
};

struct DihScanTabCompleteRep
{
  STATIC_CONST( SignalLength = 2 );

  Uint32 tableId;
  Uint32 scanCookie;
};


#undef JAM_FILE_ID

#endif
