[Summary view] [Print] [Text view]

   1  <?php
   2  /**
   3   * Rebuild recent changes from scratch.  This takes several hours,
   4   * 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   * @file
  22   * @ingroup Maintenance
  23   * @todo Document
  24   */
  25  
  26  require_once  __DIR__ . '/Maintenance.php';
  27  
  28  /**
  29   * Maintenance script that rebuilds recent changes from scratch.
  30   *
  31   * @ingroup Maintenance
  32   */
  33  class RebuildRecentchanges extends Maintenance {
  34  	public function __construct() {
  35          parent::__construct();
  36          $this->mDescription = "Rebuild recent changes";
  37      }
  38  
  39  	public function execute() {
  40          $this->rebuildRecentChangesTablePass1();
  41          $this->rebuildRecentChangesTablePass2();
  42          $this->rebuildRecentChangesTablePass3();
  43          $this->rebuildRecentChangesTablePass4();
  44          $this->purgeFeeds();
  45          $this->output( "Done.\n" );
  46      }
  47  
  48      /**
  49       * Rebuild pass 1
  50       * DOCUMENT ME!
  51       */
  52  	private function rebuildRecentChangesTablePass1() {
  53          $dbw = wfGetDB( DB_MASTER );
  54  
  55          $dbw->delete( 'recentchanges', '*' );
  56  
  57          $this->output( "Loading from page and revision tables...\n" );
  58  
  59          global $wgRCMaxAge;
  60  
  61          $this->output( '$wgRCMaxAge=' . $wgRCMaxAge );
  62          $days = $wgRCMaxAge / 24 / 3600;
  63          if ( intval( $days ) == $days ) {
  64              $this->output( " (" . $days . " days)\n" );
  65          } else {
  66              $this->output( " (approx. " . intval( $days ) . " days)\n" );
  67          }
  68  
  69          $cutoff = time() - $wgRCMaxAge;
  70          $dbw->insertSelect( 'recentchanges', array( 'page', 'revision' ),
  71              array(
  72                  'rc_timestamp' => 'rev_timestamp',
  73                  'rc_user' => 'rev_user',
  74                  'rc_user_text' => 'rev_user_text',
  75                  'rc_namespace' => 'page_namespace',
  76                  'rc_title' => 'page_title',
  77                  'rc_comment' => 'rev_comment',
  78                  'rc_minor' => 'rev_minor_edit',
  79                  'rc_bot' => 0,
  80                  'rc_new' => 'page_is_new',
  81                  'rc_cur_id' => 'page_id',
  82                  'rc_this_oldid' => 'rev_id',
  83                  'rc_last_oldid' => 0, // is this ok?
  84                  'rc_type' => $dbw->conditional( 'page_is_new != 0', RC_NEW, RC_EDIT ),
  85                  'rc_source' => $dbw->conditional(
  86                          'page_is_new != 0',
  87                          $dbw->addQuotes( RecentChange::SRC_NEW ),
  88                          $dbw->addQuotes( RecentChange::SRC_EDIT )
  89                  ),
  90                  'rc_deleted' => 'rev_deleted'
  91              ),
  92              array(
  93                  'rev_timestamp > ' . $dbw->addQuotes( $dbw->timestamp( $cutoff ) ),
  94                  'rev_page=page_id'
  95              ),
  96              __METHOD__,
  97              array(), // INSERT options
  98              array( 'ORDER BY' => 'rev_timestamp DESC', 'LIMIT' => 5000 ) // SELECT options
  99          );
 100      }
 101  
 102      /**
 103       * Rebuild pass 2
 104       * DOCUMENT ME!
 105       */
 106  	private function rebuildRecentChangesTablePass2() {
 107          $dbw = wfGetDB( DB_MASTER );
 108          list( $recentchanges, $revision ) = $dbw->tableNamesN( 'recentchanges', 'revision' );
 109  
 110          $this->output( "Updating links and size differences...\n" );
 111  
 112          # Fill in the rc_last_oldid field, which points to the previous edit
 113          $sql = "SELECT rc_cur_id,rc_this_oldid,rc_timestamp FROM $recentchanges " .
 114              "ORDER BY rc_cur_id,rc_timestamp";
 115          $res = $dbw->query( $sql, DB_MASTER );
 116  
 117          $lastCurId = 0;
 118          $lastOldId = 0;
 119          foreach ( $res as $obj ) {
 120              $new = 0;
 121              if ( $obj->rc_cur_id != $lastCurId ) {
 122                  # Switch! Look up the previous last edit, if any
 123                  $lastCurId = intval( $obj->rc_cur_id );
 124                  $emit = $obj->rc_timestamp;
 125                  $sql2 = "SELECT rev_id,rev_len FROM $revision " .
 126                      "WHERE rev_page={$lastCurId} " .
 127                      "AND rev_timestamp<'{$emit}' ORDER BY rev_timestamp DESC";
 128                  $sql2 = $dbw->limitResult( $sql2, 1, false );
 129                  $res2 = $dbw->query( $sql2 );
 130                  $row = $dbw->fetchObject( $res2 );
 131                  if ( $row ) {
 132                      $lastOldId = intval( $row->rev_id );
 133                      # Grab the last text size if available
 134                      $lastSize = !is_null( $row->rev_len ) ? intval( $row->rev_len ) : null;
 135                  } else {
 136                      # No previous edit
 137                      $lastOldId = 0;
 138                      $lastSize = null;
 139                      $new = 1; // probably true
 140                  }
 141              }
 142              if ( $lastCurId == 0 ) {
 143                  $this->output( "Uhhh, something wrong? No curid\n" );
 144              } else {
 145                  # Grab the entry's text size
 146                  $size = $dbw->selectField( 'revision', 'rev_len', array( 'rev_id' => $obj->rc_this_oldid ) );
 147  
 148                  $dbw->update( 'recentchanges',
 149                      array(
 150                          'rc_last_oldid' => $lastOldId,
 151                          'rc_new' => $new,
 152                          'rc_type' => $new,
 153                          'rc_source' => $new === 1 ? RecentChange::SRC_NEW : RecentChange::SRC_EDIT,
 154                          'rc_old_len' => $lastSize,
 155                          'rc_new_len' => $size,
 156                      ), array(
 157                          'rc_cur_id' => $lastCurId,
 158                          'rc_this_oldid' => $obj->rc_this_oldid,
 159                      ),
 160                      __METHOD__
 161                  );
 162  
 163                  $lastOldId = intval( $obj->rc_this_oldid );
 164                  $lastSize = $size;
 165              }
 166          }
 167      }
 168  
 169      /**
 170       * Rebuild pass 3
 171       * DOCUMENT ME!
 172       */
 173  	private function rebuildRecentChangesTablePass3() {
 174          $dbw = wfGetDB( DB_MASTER );
 175  
 176          $this->output( "Loading from user, page, and logging tables...\n" );
 177  
 178          global $wgRCMaxAge, $wgLogTypes, $wgLogRestrictions;
 179          // Some logs don't go in RC. This should check for that
 180          $basicRCLogs = array_diff( $wgLogTypes, array_keys( $wgLogRestrictions ) );
 181  
 182          $cutoff = time() - $wgRCMaxAge;
 183          list( $logging, $page ) = $dbw->tableNamesN( 'logging', 'page' );
 184          $dbw->insertSelect(
 185              'recentchanges',
 186              array(
 187                  'user',
 188                  "$logging LEFT JOIN $page ON (log_namespace=page_namespace AND log_title=page_title)"
 189              ),
 190              array(
 191                  'rc_timestamp' => 'log_timestamp',
 192                  'rc_user' => 'log_user',
 193                  'rc_user_text' => 'user_name',
 194                  'rc_namespace' => 'log_namespace',
 195                  'rc_title' => 'log_title',
 196                  'rc_comment' => 'log_comment',
 197                  'rc_minor' => 0,
 198                  'rc_bot' => 0,
 199                  'rc_patrolled' => 1,
 200                  'rc_new' => 0,
 201                  'rc_this_oldid' => 0,
 202                  'rc_last_oldid' => 0,
 203                  'rc_type' => RC_LOG,
 204                  'rc_source' => $dbw->addQuotes( RecentChange::SRC_LOG ),
 205                  'rc_cur_id' => $dbw->cascadingDeletes() ? 'page_id' : 'COALESCE(page_id, 0)',
 206                  'rc_log_type' => 'log_type',
 207                  'rc_log_action' => 'log_action',
 208                  'rc_logid' => 'log_id',
 209                  'rc_params' => 'log_params',
 210                  'rc_deleted' => 'log_deleted'
 211              ),
 212              array(
 213                  'log_timestamp > ' . $dbw->addQuotes( $dbw->timestamp( $cutoff ) ),
 214                  'log_user=user_id',
 215                  'log_type' => $basicRCLogs,
 216              ),
 217              __METHOD__,
 218              array(), // INSERT options
 219              array( 'ORDER BY' => 'log_timestamp DESC', 'LIMIT' => 5000 ) // SELECT options
 220          );
 221      }
 222  
 223      /**
 224       * Rebuild pass 4
 225       * DOCUMENT ME!
 226       */
 227  	private function rebuildRecentChangesTablePass4() {
 228          global $wgUseRCPatrol;
 229  
 230          $dbw = wfGetDB( DB_MASTER );
 231  
 232          list( $recentchanges, $usergroups, $user ) =
 233              $dbw->tableNamesN( 'recentchanges', 'user_groups', 'user' );
 234  
 235          $botgroups = User::getGroupsWithPermission( 'bot' );
 236          $autopatrolgroups = $wgUseRCPatrol ? User::getGroupsWithPermission( 'autopatrol' ) : array();
 237          # Flag our recent bot edits
 238          if ( !empty( $botgroups ) ) {
 239              $botwhere = $dbw->makeList( $botgroups );
 240              $botusers = array();
 241  
 242              $this->output( "Flagging bot account edits...\n" );
 243  
 244              # Find all users that are bots
 245              $sql = "SELECT DISTINCT user_name FROM $usergroups, $user " .
 246                  "WHERE ug_group IN($botwhere) AND user_id = ug_user";
 247              $res = $dbw->query( $sql, DB_MASTER );
 248  
 249              foreach ( $res as $obj ) {
 250                  $botusers[] = $dbw->addQuotes( $obj->user_name );
 251              }
 252              # Fill in the rc_bot field
 253              if ( !empty( $botusers ) ) {
 254                  $botwhere = implode( ',', $botusers );
 255                  $sql2 = "UPDATE $recentchanges SET rc_bot=1 " .
 256                      "WHERE rc_user_text IN($botwhere)";
 257                  $dbw->query( $sql2 );
 258              }
 259          }
 260          global $wgMiserMode;
 261          # Flag our recent autopatrolled edits
 262          if ( !$wgMiserMode && !empty( $autopatrolgroups ) ) {
 263              $patrolwhere = $dbw->makeList( $autopatrolgroups );
 264              $patrolusers = array();
 265  
 266              $this->output( "Flagging auto-patrolled edits...\n" );
 267  
 268              # Find all users in RC with autopatrol rights
 269              $sql = "SELECT DISTINCT user_name FROM $usergroups, $user " .
 270                  "WHERE ug_group IN($patrolwhere) AND user_id = ug_user";
 271              $res = $dbw->query( $sql, DB_MASTER );
 272  
 273              foreach ( $res as $obj ) {
 274                  $patrolusers[] = $dbw->addQuotes( $obj->user_name );
 275              }
 276  
 277              # Fill in the rc_patrolled field
 278              if ( !empty( $patrolusers ) ) {
 279                  $patrolwhere = implode( ',', $patrolusers );
 280                  $sql2 = "UPDATE $recentchanges SET rc_patrolled=1 " .
 281                      "WHERE rc_user_text IN($patrolwhere)";
 282                  $dbw->query( $sql2 );
 283              }
 284          }
 285      }
 286  
 287      /**
 288       * Purge cached feeds in $messageMemc
 289       */
 290  	private function purgeFeeds() {
 291          global $wgFeedClasses, $messageMemc;
 292  
 293          $this->output( "Deleting feed timestamps.\n" );
 294  
 295          foreach ( $wgFeedClasses as $feed => $className ) {
 296              $messageMemc->delete( wfMemcKey( 'rcfeed', $feed, 'timestamp' ) ); # Good enough for now.
 297          }
 298      }
 299  }
 300  
 301  $maintClass = "RebuildRecentchanges";
 302  require_once RUN_MAINTENANCE_IF_MAIN;