create_index.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 <getarg.h>



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

  const char* _dbname = "TEST_DB";
  int _help = 0;
  int _ordered = 0, _pk = 1;
  char* _iname= NULL;
  char* _tname= NULL;

  struct getargs args[] = {
    { "database", 'd', arg_string, &_dbname, "dbname", 
      "Name of database table is in"},
    { "ordered", 'o', arg_flag, &_ordered, "Create ordered index", "" },
    { "pk", 'p', arg_flag, &_pk, "Create index on primary key", "" },
    { "idxname", 'i', arg_string, &_iname, "idxname", "Override default name for index" },
    { "tabname", 't', arg_string, &_tname, "tabname", "Specify single tabname and list of col names as args" },
    { "usage", '?', arg_flag, &_help, "Print help", "" }
  };

  int num_args = sizeof(args) / sizeof(args[0]);
  int optind = 0;
  char desc[] = 
    "<tabname>+\n"\
    "This program will create one unique hash index named ind_<tabname> "
    " for each table. The index will contain all columns in the table";
  
  if(getarg(args, num_args, argc, argv, &optind) || _help ||
     argv[optind] == NULL){
    arg_printusage(args, num_args, argv[0], desc);
    return NDBT_ProgramExit(NDBT_WRONGARGS);
  }
  
  Ndb_cluster_connection con;
  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;
  
  NdbDictionary::Dictionary * dict = MyNdb.getDictionary();
  
  for(int i = optind; i<argc; i++){
    const char* tabName= (_tname)? _tname : argv[i];
    const NdbDictionary::Table * tab = dict->getTable(tabName);
    if(tab == 0){
      g_err << "Unknown table: " << tabName << endl;
      if (_tname)
        return NDBT_ProgramExit(NDBT_FAILED);
      continue;
    }
    
    NdbDictionary::Index ind;
    if(_ordered){
      ind.setType(NdbDictionary::Index::OrderedIndex);
      ind.setLogging(false);
    } else {
      ind.setType(NdbDictionary::Index::UniqueHashIndex);
    }
    char buf[512];
    if (!_iname)
    {
      sprintf(buf, "IND_%s_%s_%c", 
              argv[i], (_pk ? "PK" : "FULL"), (_ordered ? 'O' : 'U'));
      ind.setName(buf);
    }
    else
    {
      ind.setName(_iname);
    }

    ind.setTable(tabName);

    if (!_tname)
    {
      ndbout << "creating index " << ind.getName() << " on table " << tabName
             << "(";
      for(int c = 0; c<tab->getNoOfColumns(); c++){
        if(!_pk || tab->getColumn(c)->getPrimaryKey())
        {
          ndbout << tab->getColumn(c)->getName() << ", ";
          ind.addIndexColumn(tab->getColumn(c)->getName());
        }
      }
      ndbout << ")" << endl;
    }
    else
    {
      /* Treat args as column names */
      ndbout << "creating index " << ind.getName() << " on table " << tabName
             << "(";
      for(int argNum=i; argNum < argc; argNum++)
      {
        const char* colName= argv[argNum];
        if (tab->getColumn(colName) == NULL)
        {
          g_err << "Column " << colName << " does not exist in table " << tabName
                << endl;
          return NDBT_ProgramExit(NDBT_FAILED);
        }
        ndbout << colName << ", ";
        ind.addIndexColumn(colName);
      }
      ndbout << ")" << endl;
    }
    const int res = dict->createIndex(ind);
    if(res != 0)
      ndbout << endl << dict->getNdbError() << endl;
    else
      ndbout << "OK" << endl;

    if (_tname) // Just create a single index
      return NDBT_ProgramExit(NDBT_OK);
  }  
  
  return NDBT_ProgramExit(NDBT_OK);
}