copy_tab.cpp

/*
   Copyright (C) 2003-2006 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 as published by
   the Free Software Foundation; version 2 of the License.

   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 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
*/

#include <ndb_global.h>

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

#include <getarg.h>

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

  const char* _tabname = NULL;
  const char* _dbname = "TEST_DB";
  const char* _connectstr = NULL;
  int _copy_data = true;
  int _help = 0;
  
  struct getargs args[] = {
    { "database", 'd', arg_string, &_dbname, "dbname", 
      "Name of database table is in"}, 
    { "connstr", 'c', arg_string, &_connectstr, "connect string", 
      "How to connect to NDB"}, 
    { "copy-data", '\0', arg_negative_flag, &_copy_data, "Don't copy data to new table", 
      "How to connect to NDB"}, 
    { "usage", '?', arg_flag, &_help, "Print help", "" }
  };
  int num_args = sizeof(args) / sizeof(args[0]);
  int optind = 0;
  char desc[] = 
    "srctab desttab\n"\
    "This program will copy one table in Ndb\n";

  if(getarg(args, num_args, argc, argv, &optind) || 
     argv[optind] == NULL || argv[optind + 1] == NULL || _help){
    arg_printusage(args, num_args, argv[0], desc);
    return NDBT_ProgramExit(NDBT_WRONGARGS);
  }
  _tabname = argv[optind];
  
  Ndb_cluster_connection con(_connectstr);
  if(con.connect(12, 5, 1) != 0)
  {
    return NDBT_ProgramExit(NDBT_FAILED);
  }
  Ndb MyNdb(&con,_dbname);
  if(MyNdb.init() != 0){
    ERR(MyNdb.getNdbError());
    return NDBT_ProgramExit(NDBT_FAILED);
  }
  
  while(MyNdb.waitUntilReady() != 0)
    ndbout << "Waiting for ndb to become ready..." << endl;

  const NdbDictionary::Table* ptab = MyNdb.getDictionary()->getTable(_tabname);
  if (ptab == 0)
  {
    ndbout << endl << MyNdb.getDictionary()->getNdbError() << endl;
    return NDBT_ProgramExit(NDBT_FAILED);
  }

  Vector<NdbDictionary::Index*> indexes;
  {
    NdbDictionary::Dictionary::List list;
    if (MyNdb.getDictionary()->listIndexes(list, *ptab) != 0)
    {
      ndbout << endl << MyNdb.getDictionary()->getNdbError() << endl;
      return NDBT_ProgramExit(NDBT_FAILED);
    }
    for (unsigned i = 0; i<list.count; i++)
    {
      const NdbDictionary::Index* idx = 
        MyNdb.getDictionary()->getIndex(list.elements[i].name,
                                        _tabname);
      if (idx)
      {
        ndbout << " found index " << list.elements[i].name << endl;
        NdbDictionary::Index * copy = new NdbDictionary::Index();
        copy->setName(idx->getName());
        copy->setType(idx->getType());
        copy->setLogging(idx->getLogging());
        for (unsigned j = 0; j<idx->getNoOfColumns(); j++)
        {
          copy->addColumn(idx->getColumn(j)->getName());
        }
        indexes.push_back(copy);
      }
    }
  }
  for (int i = optind + 1; i<argc; i++)
  {
    const char *_to_tabname = argv[i];
    ndbout << "Copying table " <<  _tabname << " to " << _to_tabname << "...";
    NdbDictionary::Table tab2(*ptab);
    tab2.setName(_to_tabname);
    if (MyNdb.getDictionary()->beginSchemaTrans() != 0)
    {
      ndbout << endl << MyNdb.getDictionary()->getNdbError() << endl;
      return NDBT_ProgramExit(NDBT_FAILED);
    }
    if (MyNdb.getDictionary()->createTable(tab2) != 0){
      ndbout << endl << MyNdb.getDictionary()->getNdbError() << endl;
      return NDBT_ProgramExit(NDBT_FAILED);
    }

    for (unsigned j = 0; j<indexes.size(); j++)
    {
      NdbDictionary::Index * idx = indexes[j];
      idx->setTable(_to_tabname);
      int res = MyNdb.getDictionary()->createIndex(*idx);
      if (res != 0)
      {
        ndbout << "Failed to create index: " << idx->getName() << " : " 
               << MyNdb.getDictionary()->getNdbError() << endl;
        return NDBT_ProgramExit(NDBT_FAILED);
      }
    }
    
    if (MyNdb.getDictionary()->endSchemaTrans() != 0)
    {
      ndbout << endl << MyNdb.getDictionary()->getNdbError() << endl;
      return NDBT_ProgramExit(NDBT_FAILED);
    }

    ndbout << "OK" << endl;
    if (_copy_data){
      ndbout << "Copying data..."<<endl;
      const NdbDictionary::Table * tab3 = 
        NDBT_Table::discoverTableFromDb(&MyNdb, 
                                        _tabname);
      UtilTransactions util(*tab3);
      
      if(util.copyTableData(&MyNdb,
                            _to_tabname) != NDBT_OK){
        return NDBT_ProgramExit(NDBT_FAILED);
      }
      ndbout << "OK" << endl;
    }
  }
  
  for (unsigned j = 0; j<indexes.size(); j++)
  {
    delete indexes[j];
  }

  return NDBT_ProgramExit(NDBT_OK);
}

template class Vector<NdbDictionary::Index*>;