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   1  <?php
   2  /**
   3   * Init the user_editcount database field based on the number of rows in the
   4   * revision table.
   5   *
   6   * This program is free software; you can redistribute it and/or modify
   7   * it under the terms of the GNU General Public License as published by
   8   * the Free Software Foundation; either version 2 of the License, or
   9   * (at your option) any later version.
  10   *
  11   * This program is distributed in the hope that it will be useful,
  12   * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14   * GNU General Public License for more details.
  15   *
  16   * You should have received a copy of the GNU General Public License along
  17   * with this program; if not, write to the Free Software Foundation, Inc.,
  18   * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  19   * http://www.gnu.org/copyleft/gpl.html
  20   *
  21   * @file
  22   * @ingroup Maintenance
  23   */
  24  
  25  require_once  __DIR__ . '/Maintenance.php';
  26  
  27  class InitEditCount extends Maintenance {
  28  	public function __construct() {
  29          parent::__construct();
  30          $this->addOption( 'quick', 'Force the update to be done in a single query' );
  31          $this->addOption( 'background', 'Force replication-friendly mode; may be inefficient but
  32          avoids locking tables or lagging slaves with large updates;
  33          calculates counts on a slave if possible.
  34  
  35  Background mode will be automatically used if the server is MySQL 4.0
  36  (which does not support subqueries) or if multiple servers are listed
  37  in the load balancer, usually indicating a replication environment.' );
  38          $this->mDescription = "Batch-recalculate user_editcount fields from the revision table";
  39      }
  40  
  41  	public function execute() {
  42          $dbw = wfGetDB( DB_MASTER );
  43          $user = $dbw->tableName( 'user' );
  44          $revision = $dbw->tableName( 'revision' );
  45  
  46          $dbver = $dbw->getServerVersion();
  47  
  48          // Autodetect mode...
  49          $backgroundMode = wfGetLB()->getServerCount() > 1 ||
  50              ( $dbw instanceof DatabaseMysql );
  51  
  52          if ( $this->hasOption( 'background' ) ) {
  53              $backgroundMode = true;
  54          } elseif ( $this->hasOption( 'quick' ) ) {
  55              $backgroundMode = false;
  56          }
  57  
  58          if ( $backgroundMode ) {
  59              $this->output( "Using replication-friendly background mode...\n" );
  60  
  61              $dbr = wfGetDB( DB_SLAVE );
  62              $chunkSize = 100;
  63              $lastUser = $dbr->selectField( 'user', 'MAX(user_id)', '', __METHOD__ );
  64  
  65              $start = microtime( true );
  66              $migrated = 0;
  67              for ( $min = 0; $min <= $lastUser; $min += $chunkSize ) {
  68                  $max = $min + $chunkSize;
  69                  $result = $dbr->query(
  70                      "SELECT
  71                          user_id,
  72                          COUNT(rev_user) AS user_editcount
  73                      FROM $user
  74                      LEFT OUTER JOIN $revision ON user_id=rev_user
  75                      WHERE user_id > $min AND user_id <= $max
  76                      GROUP BY user_id",
  77                      __METHOD__ );
  78  
  79                  foreach ( $result as $row ) {
  80                      $dbw->update( 'user',
  81                          array( 'user_editcount' => $row->user_editcount ),
  82                          array( 'user_id' => $row->user_id ),
  83                          __METHOD__ );
  84                      ++$migrated;
  85                  }
  86  
  87                  $delta = microtime( true ) - $start;
  88                  $rate = ( $delta == 0.0 ) ? 0.0 : $migrated / $delta;
  89                  $this->output( sprintf( "%s %d (%0.1f%%) done in %0.1f secs (%0.3f accounts/sec).\n",
  90                      wfWikiID(),
  91                      $migrated,
  92                      min( $max, $lastUser ) / $lastUser * 100.0,
  93                      $delta,
  94                      $rate ) );
  95  
  96                  wfWaitForSlaves();
  97              }
  98          } else {
  99              // Subselect should work on modern MySQLs etc
 100              $this->output( "Using single-query mode...\n" );
 101              $sql = "UPDATE $user SET user_editcount=(SELECT COUNT(*) FROM $revision WHERE rev_user=user_id)";
 102              $dbw->query( $sql );
 103          }
 104  
 105          $this->output( "Done!\n" );
 106      }
 107  }
 108  
 109  $maintClass = "InitEditCount";
 110  require_once RUN_MAINTENANCE_IF_MAIN;