/* Copyright (C) 2008 MySQL AB, 2009 Sun Microsystems, Inc.
    All rights reserved. Use is subject to license terms.

   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 */

#include <ndb_global.h>

#include <NdbOut.hpp>
#include <NdbApi.hpp>
#include <NDBT.hpp>

#include <getarg.h>

int main(int argc, const char** argv){
  ndb_init();

  int _help = 0;
  int _p = 0;
  const char * db = "TEST_DB";
  const char* _connectstr = NULL;

  struct getargs args[] = {
    { "database", 'd', arg_string, &db, "database", 0 },
    { "connstr", 'c', arg_string, &_connectstr, "Connect string", "cs" },
    { "partitions", 'p', arg_integer, &_p, "New no of partitions", 0},
    { "usage", '?', arg_flag, &_help, "Print help", "" }
  };
  int num_args = sizeof(args) / sizeof(args[0]);
  int optind = 0;
  char desc[] =
    "tabname\n"                                                         \
    "This program will alter no of partitions of table in Ndb.\n";

  if(getarg(args, num_args, argc, argv, &optind) || _help){
    arg_printusage(args, num_args, argv[0], desc);
    return NDBT_ProgramExit(NDBT_WRONGARGS);
  }

  if(argv[optind] == NULL)
  {
    arg_printusage(args, num_args, argv[0], desc);
    return NDBT_ProgramExit(NDBT_WRONGARGS);
  }


  // Connect to Ndb
  Ndb_cluster_connection con(_connectstr);
  if(con.connect(12, 5, 1) != 0)
  {
    return NDBT_ProgramExit(NDBT_FAILED);
  }
  Ndb MyNdb(&con, db );

  if(MyNdb.init() != 0){
    ERR(MyNdb.getNdbError());
    return NDBT_ProgramExit(NDBT_FAILED);
  }

  while(MyNdb.waitUntilReady() != 0)
    ndbout << "Waiting for ndb to become ready..." << endl;

  NdbDictionary::Dictionary* MyDic = MyNdb.getDictionary();
  for (int i = optind; i<argc; i++)
  {
    printf("altering %s/%s...", db, argv[i]);
    const NdbDictionary::Table* oldTable = MyDic->getTable(argv[i]);

    if (oldTable == 0)
    {
      ndbout << "Failed to retrieve table " << argv[i]
             << ": " << MyDic->getNdbError() << endl;
      return NDBT_ProgramExit(NDBT_FAILED);
    }

    NdbDictionary::Table newTable = *oldTable;
    newTable.setFragmentCount(_p);

    if (MyDic->beginSchemaTrans() != 0)
      goto err;

    if (MyDic->prepareHashMap(*oldTable, newTable) != 0)
      goto err;

    if (MyDic->alterTable(*oldTable, newTable) != 0)
      goto err;

    if (MyDic->endSchemaTrans())
      goto err;

    ndbout_c("done");
  }

  return NDBT_ProgramExit(NDBT_OK);

err:
  NdbError err = MyDic->getNdbError();
  if (MyDic->hasSchemaTrans())
    MyDic->endSchemaTrans(NdbDictionary::Dictionary::SchemaTransAbort);

  ndbout << "Failed! "
         << err << endl;
  return NDBT_ProgramExit(NDBT_FAILED);

}
