maintenance/rebuildrecentchanges.php

   1 <?php
   2 /**
   3  * Rebuild link tracking tables from scratch.  This takes several
   4  * hours, depending on the database size and server configuration.
   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  * @ingroup Maintenance
  22  * @todo Document
  23  */
  24
  25 require_once( "Maintenance.php" );
  26
  27 class RebuildRecentchanges extends Maintenance {
  28         public function __construct() {
  29                 parent::__construct();
  30                 $this->mDescription = "Rebuild recent changes";
  31         }
  32
  33         public function execute() {
  34                 global $wgTitle;
  35                 $wgTitle = Title::newFromText( "Rebuild recent changes script" );
  36                 $this->rebuildRecentChangesTablePass1();
  37                 $this->rebuildRecentChangesTablePass2();
  38                 $this->rebuildRecentChangesTablePass3();
  39                 $this->rebuildRecentChangesTablePass4();
  40                 $this->output( "Done.\n" );
  41         }
  42
  43         /**
  44          * Rebuild pass 1
  45          * DOCUMENT ME!
  46          */
  47         function rebuildRecentChangesTablePass1()
  48         {
  49                 $dbw = wfGetDB( DB_MASTER );
  50
  51                 $dbw->delete( 'recentchanges', '*' );
  52
  53                 $this->output( "Loading from page and revision tables...\n" );
  54
  55                 global $wgRCMaxAge;
  56
  57                 $this->output( '$wgRCMaxAge=' . $wgRCMaxAge );
  58                 $days = $wgRCMaxAge / 24 / 3600;
  59                 if ( intval($days) == $days ) {
  60                                 $this->output( " (" . $days . " days)\n" );
  61                 } else {
  62                                 $this->output( " (approx. " .  intval($days) . " days)\n" );
  63                 }
  64
  65                 $cutoff = time() - $wgRCMaxAge;
  66                 $dbw->insertSelect( 'recentchanges', array( 'page', 'revision' ),
  67                         array(
  68                                 'rc_timestamp'  => 'rev_timestamp',
  69                                 'rc_cur_time'   => 'rev_timestamp',
  70                                 'rc_user'       => 'rev_user',
  71                                 'rc_user_text'  => 'rev_user_text',
  72                                 'rc_namespace'  => 'page_namespace',
  73                                 'rc_title'      => 'page_title',
  74                                 'rc_comment'    => 'rev_comment',
  75                                 'rc_minor'      => 'rev_minor_edit',
  76                                 'rc_bot'        => 0,
  77                                 'rc_new'        => 'page_is_new',
  78                                 'rc_cur_id'     => 'page_id',
  79                                 'rc_this_oldid' => 'rev_id',
  80                                 'rc_last_oldid' => 0, // is this ok?
  81                                 'rc_type'       => $dbw->conditional( 'page_is_new != 0', RC_NEW, RC_EDIT ),
  82                                 'rc_deleted'    => 'rev_deleted'
  83                         ), array(
  84                                 'rev_timestamp > ' . $dbw->addQuotes( $dbw->timestamp( $cutoff ) ),
  85                                 'rev_page=page_id'
  86                         ), __METHOD__,
  87                         array(), // INSERT options
  88                         array( 'ORDER BY' => 'rev_timestamp DESC', 'LIMIT' => 5000 ) // SELECT options
  89                 );
  90         }
  91
  92         /**
  93          * Rebuild pass 2
  94          * DOCUMENT ME!
  95          */
  96         private function rebuildRecentChangesTablePass2() {
  97                 $dbw = wfGetDB( DB_MASTER );
  98                 list ($recentchanges, $revision) = $dbw->tableNamesN( 'recentchanges', 'revision' );
  99
 100                 $this->output( "Updating links and size differences...\n" );
 101
 102                 # Fill in the rc_last_oldid field, which points to the previous edit
 103                 $sql = "SELECT rc_cur_id,rc_this_oldid,rc_timestamp FROM $recentchanges " .
 104                   "ORDER BY rc_cur_id,rc_timestamp";
 105                 $res = $dbw->query( $sql, DB_MASTER );
 106
 107                 $lastCurId = 0;
 108                 $lastOldId = 0;
 109                 while ( $obj = $dbw->fetchObject( $res ) ) {
 110                         $new = 0;
 111                         if( $obj->rc_cur_id != $lastCurId ) {
 112                                 # Switch! Look up the previous last edit, if any
 113                                 $lastCurId = intval( $obj->rc_cur_id );
 114                                 $emit = $obj->rc_timestamp;
 115                                 $sql2 = "SELECT rev_id,rev_len FROM $revision " .
 116                                         "WHERE rev_page={$lastCurId} ".
 117                                         "AND rev_timestamp<'{$emit}' ORDER BY rev_timestamp DESC LIMIT 1";
 118                                 $res2 = $dbw->query( $sql2 );
 119                                 if( $row = $dbw->fetchObject( $res2 ) ) {
 120                                         $lastOldId = intval($row->rev_id);
 121                                         # Grab the last text size if available
 122                                         $lastSize = !is_null($row->rev_len) ? intval($row->rev_len) : 'NULL';
 123                                 } else {
 124                                         # No previous edit
 125                                         $lastOldId = 0;
 126                                         $lastSize = 'NULL';
 127                                         $new = 1; // probably true
 128                                 }
 129                                 $dbw->freeResult( $res2 );
 130                         }
 131                         if( $lastCurId == 0 ) {
 132                                 $this->output( "Uhhh, something wrong? No curid\n" );
 133                         } else {
 134                                 # Grab the entry's text size
 135                                 $size = $dbw->selectField( 'revision', 'rev_len', array('rev_id' => $obj->rc_this_oldid ) );
 136                                 $size = !is_null($size) ? intval($size) : 'NULL';
 137
 138                                 $sql3 = "UPDATE $recentchanges SET rc_last_oldid=$lastOldId,rc_new=$new,rc_type=$new," .
 139                                         "rc_old_len=$lastSize,rc_new_len=$size " .
 140                                         "WHERE rc_cur_id={$lastCurId} AND rc_this_oldid={$obj->rc_this_oldid}";
 141                                 $dbw->query( $sql3 );
 142
 143                                 $lastOldId = intval( $obj->rc_this_oldid );
 144                                 $lastSize = $size;
 145                         }
 146                 }
 147                 $dbw->freeResult( $res );
 148         }
 149
 150         /**
 151          * Rebuild pass 3
 152          * DOCUMENT ME!
 153          */
 154         private function rebuildRecentChangesTablePass3() {
 155                 $dbw = wfGetDB( DB_MASTER );
 156
 157                 $this->output( "Loading from user, page, and logging tables...\n" );
 158
 159                 global $wgRCMaxAge, $wgLogTypes, $wgLogRestrictions;
 160                 // Some logs don't go in RC. This should check for that
 161                 $basicRCLogs = array_diff( $wgLogTypes, array_keys( $wgLogRestrictions ) );
 162
 163                 // Escape...blah blah
 164                 $selectLogs = array();
 165                 foreach( $basicRCLogs as $logtype ) {
 166                         $safetype = $dbw->strencode( $logtype );
 167                         $selectLogs[] = "'$safetype'";
 168                 }
 169
 170                 $cutoff = time() - $wgRCMaxAge;
 171                 list($logging, $page) = $dbw->tableNamesN( 'logging', 'page' );
 172                 $dbw->insertSelect( 'recentchanges', array( 'user', "$logging LEFT JOIN $page ON (log_namespace=page_namespace AND log_title=page_title)" ),
 173                         array(
 174                                 'rc_timestamp'  => 'log_timestamp',
 175                                 'rc_cur_time'   => 'log_timestamp',
 176                                 'rc_user'       => 'log_user',
 177                                 'rc_user_text'  => 'user_name',
 178                                 'rc_namespace'  => 'log_namespace',
 179                                 'rc_title'      => 'log_title',
 180                                 'rc_comment'    => 'log_comment',
 181                                 'rc_minor'      => 0,
 182                                 'rc_bot'        => 0,
 183                                 'rc_patrolled'  => 1,
 184                                 'rc_new'        => 0,
 185                                 'rc_this_oldid' => 0,
 186                                 'rc_last_oldid' => 0,
 187                                 'rc_type'       => RC_LOG,
 188                                 'rc_cur_id'     => 'COALESCE(page_id, 0)',
 189                                 'rc_log_type'   => 'log_type',
 190                                 'rc_log_action' => 'log_action',
 191                                 'rc_logid'      => 'log_id',
 192                                 'rc_params'     => 'log_params',
 193                                 'rc_deleted'    => 'log_deleted'
 194                         ), array(
 195                                 'log_timestamp > ' . $dbw->addQuotes( $dbw->timestamp( $cutoff ) ),
 196                                 'log_user=user_id',
 197                                 'log_type IN(' . implode(',',$selectLogs) . ')'
 198                         ), __METHOD__,
 199                         array(), // INSERT options
 200                         array( 'ORDER BY' => 'log_timestamp DESC', 'LIMIT' => 5000 ) // SELECT options
 201                 );
 202         }
 203
 204         /**
 205          * Rebuild pass 4
 206          * DOCUMENT ME!
 207          */
 208         private function rebuildRecentChangesTablePass4() {
 209                 global $wgGroupPermissions, $wgUseRCPatrol;
 210
 211                 $dbw = wfGetDB( DB_MASTER );
 212
 213                 list($recentchanges,$usergroups,$user) = $dbw->tableNamesN( 'recentchanges', 'user_groups', 'user' );
 214
 215                 $botgroups = $autopatrolgroups = array();
 216                 foreach( $wgGroupPermissions as $group => $rights ) {
 217                         if( isset( $rights['bot'] ) && $rights['bot'] == true ) {
 218                                 $botgroups[] = $dbw->addQuotes( $group );
 219                         }
 220                         if( $wgUseRCPatrol && isset( $rights['autopatrol'] ) && $rights['autopatrol'] == true ) {
 221                                 $autopatrolgroups[] = $dbw->addQuotes( $group );
 222                         }
 223                 }
 224                 # Flag our recent bot edits
 225                 if( !empty($botgroups) ) {
 226                         $botwhere = implode(',',$botgroups);
 227                         $botusers = array();
 228
 229                         $this->output( "Flagging bot account edits...\n" );
 230
 231                         # Find all users that are bots
 232                         $sql = "SELECT DISTINCT user_name FROM $usergroups, $user " .
 233                                 "WHERE ug_group IN($botwhere) AND user_id = ug_user";
 234                         $res = $dbw->query( $sql, DB_MASTER );
 235
 236                         while( $obj = $dbw->fetchObject( $res ) ) {
 237                                 $botusers[] = $dbw->addQuotes( $obj->user_name );
 238                         }
 239                         # Fill in the rc_bot field
 240                         if( !empty($botusers) ) {
 241                                 $botwhere = implode(',',$botusers);
 242                                 $sql2 = "UPDATE $recentchanges SET rc_bot=1 " .
 243                                         "WHERE rc_user_text IN($botwhere)";
 244                                 $dbw->query( $sql2 );
 245                         }
 246                 }
 247                 global $wgMiserMode;
 248                 # Flag our recent autopatrolled edits
 249                 if( !$wgMiserMode && !empty($autopatrolgroups) ) {
 250                         $patrolwhere = implode(',',$autopatrolgroups);
 251                         $patrolusers = array();
 252
 253                         $this->output( "Flagging auto-patrolled edits...\n" );
 254
 255                         # Find all users in RC with autopatrol rights
 256                         $sql = "SELECT DISTINCT user_name FROM $usergroups, $user " .
 257                                 "WHERE ug_group IN($patrolwhere) AND user_id = ug_user";
 258                         $res = $dbw->query( $sql, DB_MASTER );
 259
 260                         while( $obj = $dbw->fetchObject( $res ) ) {
 261                                 $patrolusers[] = $dbw->addQuotes( $obj->user_name );
 262                         }
 263
 264                         # Fill in the rc_patrolled field
 265                         if( !empty($patrolusers) ) {
 266                                 $patrolwhere = implode(',',$patrolusers);
 267                                 $sql2 = "UPDATE $recentchanges SET rc_patrolled=1 " .
 268                                         "WHERE rc_user_text IN($patrolwhere)";
 269                                 $dbw->query( $sql2 );
 270                         }
 271                 }
 272
 273                 $dbw->freeResult( $res );
 274         }
 275 }
 276
 277 $maintClass = "RebuildRecentchanges";
 278 require_once( DO_MAINTENANCE );