mysql5/mysql-5.7.27/storage/ndb/test/tools/create_fk.cpp

/* Copyright (c) 2012, 2014, 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 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
*/

#include <ndb_global.h>

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

#include <getarg.h>

static NdbDictionary::ForeignKey::FkAction parse_action(const char *);

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

  const char* _dbname = "TEST_DB";
  int _help = 0;
  char* _parent = NULL;
  char* _parenti = NULL;
  char* _child = NULL;
  char* _childi = NULL;
  const char* on_update_action = "noaction";
  const char* on_delete_action = "noaction";

  struct getargs args[] = {
    { "database", 'd', arg_string, &_dbname, "dbname",
      "Name of database table is in"},
    { "parent", 'p', arg_string, &_parent, "Parent table", "" },
    { "parent-index", 'i', arg_string, &_parenti, "Parent index", "" },
    { "child", 'c', arg_string, &_child, "Child table", "" },
    { "child-index", 'j', arg_string, &_childi, "Child index", "" },
    { "on-update-action", 0, arg_string, &on_update_action, "On update action", "" },
    { "on-delete-action", 0, arg_string, &on_delete_action, "On delete action", "" },
    { "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){
    NDB_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();

  const NdbDictionary::Table * parent = dict->getTable(_parent);
  if (parent == 0)
  {
    g_err << "Unknown table: " << _parent << endl;
    return NDBT_ProgramExit(NDBT_FAILED);
  }

  const NdbDictionary::Table * child = dict->getTable(_child);
  if (child == 0)
  {
    g_err << "Unknown table: " << _child << endl;
    return NDBT_ProgramExit(NDBT_FAILED);
  }

  const NdbDictionary::Index * pi = 0;
  const NdbDictionary::Index * ci = 0;
  if (_parenti != 0)
  {
    pi = dict->getIndex(_parenti, _parent);
    if (pi == 0)
    {
      g_err << "Unknown parent index: " << _parenti << endl;
      return NDBT_ProgramExit(NDBT_FAILED);
    }
  }

  if (_childi != 0)
  {
    ci = dict->getIndex(_childi, _child);
    if (ci == 0)
    {
      g_err << "Unknown child index: " << _childi
            << " on " << _child << endl;
      return NDBT_ProgramExit(NDBT_FAILED);
    }
  }

  const char * name = argv[optind];
  NdbDictionary::ForeignKey fk;
  fk.setName(name);
  fk.setParent(* parent, pi);
  fk.setChild(* child, ci);

  NdbDictionary::ForeignKey::FkAction fu = parse_action(on_update_action);
  fk.setOnUpdateAction(fu);

  NdbDictionary::ForeignKey::FkAction fd = parse_action(on_delete_action);
  fk.setOnDeleteAction(fd);

  const int res = dict->createForeignKey(fk);
  if(res != 0)
  {
    ndbout << endl << dict->getNdbError() << endl;
    return NDBT_ProgramExit(NDBT_FAILED);
  }

  ndbout << "OK" << endl;
  return NDBT_ProgramExit(NDBT_OK);
}

static
NdbDictionary::ForeignKey::FkAction
parse_action(const char * str)
{
  if (strcasecmp(str, "noaction") == 0)
    return NdbDictionary::ForeignKey::NoAction;
  if (strcasecmp(str, "restrict") == 0)
    return NdbDictionary::ForeignKey::Restrict;
  else if (strcasecmp(str, "cascade") == 0)
    return NdbDictionary::ForeignKey::Cascade;
  else if (strcasecmp(str, "setnull") == 0)
    return NdbDictionary::ForeignKey::SetNull;
  else if (strcasecmp(str, "setnull") == 0)
    return NdbDictionary::ForeignKey::SetDefault;

  ndbout_c("Unknown action: %s "
           " (supported: noaction, restrict, cascade, setnull, setdefault)\n",
           str);
  exit(0);
}