maintenance/initEditCount.php

   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 use MediaWiki\MediaWikiServices;
  28
  29 class InitEditCount extends Maintenance {
  30         public function __construct() {
  31                 parent::__construct();
  32                 $this->addOption( 'quick', 'Force the update to be done in a single query' );
  33                 $this->addOption( 'background', 'Force replication-friendly mode; may be inefficient but
  34                 avoids locking tables or lagging replica DBs with large updates;
  35                 calculates counts on a replica DB if possible.
  36
  37 Background mode will be automatically used if multiple servers are listed
  38 in the load balancer, usually indicating a replication environment.' );
  39                 $this->addDescription( 'Batch-recalculate user_editcount fields from the revision table' );
  40         }
  41
  42         public function execute() {
  43                 $dbw = $this->getDB( DB_MASTER );
  44
  45                 // Autodetect mode...
  46                 if ( $this->hasOption( 'background' ) ) {
  47                         $backgroundMode = true;
  48                 } elseif ( $this->hasOption( 'quick' ) ) {
  49                         $backgroundMode = false;
  50                 } else {
  51                         $lb = MediaWikiServices::getInstance()->getDBLoadBalancer();
  52                         $backgroundMode = $lb->getServerCount() > 1;
  53                 }
  54
  55                 $actorQuery = ActorMigration::newMigration()->getJoin( 'rev_user' );
  56
  57                 if ( $backgroundMode ) {
  58                         $this->output( "Using replication-friendly background mode...\n" );
  59
  60                         $dbr = $this->getDB( DB_REPLICA );
  61                         $chunkSize = 100;
  62                         $lastUser = $dbr->selectField( 'user', 'MAX(user_id)', '', __METHOD__ );
  63
  64                         $start = microtime( true );
  65                         $migrated = 0;
  66                         for ( $min = 0; $min <= $lastUser; $min += $chunkSize ) {
  67                                 $max = $min + $chunkSize;
  68
  69                                 $revUser = $actorQuery['fields']['rev_user'];
  70                                 $result = $dbr->select(
  71                                         [ 'user', 'rev' => [ 'revision' ] + $actorQuery['tables'] ],
  72                                         [ 'user_id', 'user_editcount' => "COUNT($revUser)" ],
  73                                         "user_id > $min AND user_id <= $max",
  74                                         __METHOD__,
  75                                         [ 'GROUP BY' => 'user_id' ],
  76                                         [ 'rev' => [ 'LEFT JOIN', "user_id = $revUser" ] ] + $actorQuery['joins']
  77                                 );
  78
  79                                 foreach ( $result as $row ) {
  80                                         $dbw->update( 'user',
  81                                                 [ 'user_editcount' => $row->user_editcount ],
  82                                                 [ '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                         $this->output( "Using single-query mode...\n" );
 100
 101                         $user = $dbw->tableName( 'user' );
 102                         $subquery = $dbw->selectSQLText(
 103                                 [ 'revision' ] + $actorQuery['tables'],
 104                                 [ 'COUNT(*)' ],
 105                                 [ 'user_id = ' . $actorQuery['fields']['rev_user'] ],
 106                                 __METHOD__,
 107                                 [],
 108                                 $actorQuery['joins']
 109                         );
 110                         $dbw->query( "UPDATE $user SET user_editcount=($subquery)", __METHOD__ );
 111                 }
 112
 113                 $this->output( "Done!\n" );
 114         }
 115 }
 116
 117 $maintClass = InitEditCount::class;
 118 require_once RUN_MAINTENANCE_IF_MAIN;