maintenance/rebuildrecentchanges.inc

   1 <?php
   2 /**
   3  * Rebuild recent changes table.
   4  *
   5  * @todo document
   6  * @addtogroup Maintenance
   7  */
   8
   9 /** Public entry; more passes might come in! :) */
  10 function rebuildRecentChangesTable() {
  11         rebuildRecentChangesTablePass1();
  12         rebuildRecentChangesTablePass2();
  13         rebuildRecentChangesTablePass3();
  14 }
  15
  16 /** */
  17 function rebuildRecentChangesTablePass1()
  18 {
  19         $fname = 'rebuildRecentChangesTablePass1';
  20         $dbw = wfGetDB( DB_MASTER );
  21
  22         $dbw->delete( 'recentchanges', '*' );
  23
  24         print( "Loading from page and revision tables...\n" );
  25
  26         global $wgRCMaxAge;
  27
  28         print( '$wgRCMaxAge=' . $wgRCMaxAge );
  29         $days = $wgRCMaxAge / 24 / 3600;
  30         if ( intval($days) == $days ) {
  31                         print( " (" . $days . " days)\n" );
  32         } else {
  33                         print( " (approx. " .  intval($days) . " days)\n" );
  34         }
  35
  36         $cutoff = time() - $wgRCMaxAge;
  37         $dbw->insertSelect( 'recentchanges', array( 'page', 'revision' ),
  38                 array(
  39                         'rc_timestamp'  => 'rev_timestamp',
  40                         'rc_cur_time'   => 'rev_timestamp',
  41                         'rc_user'       => 'rev_user',
  42                         'rc_user_text'  => 'rev_user_text',
  43                         'rc_namespace'  => 'page_namespace',
  44                         'rc_title'      => 'page_title',
  45                         'rc_comment'    => 'rev_comment',
  46                         'rc_minor'      => 'rev_minor_edit',
  47                         'rc_bot'        => 0,
  48                         'rc_new'        => 'page_is_new',
  49                         'rc_cur_id'     => 'page_id',
  50                         'rc_this_oldid' => 'rev_id',
  51                         'rc_last_oldid' => 0, // is this ok?
  52                         'rc_type'       => $dbw->conditional( 'page_is_new != 0', RC_NEW, RC_EDIT ),
  53                         'rc_deleted'    => 'rev_deleted'
  54                 ), array(
  55                         'rev_timestamp > ' . $dbw->addQuotes( $dbw->timestamp( $cutoff ) ),
  56                         'rev_page=page_id'
  57                 ), $fname,
  58                 array(), // INSERT options
  59                 array( 'ORDER BY' => 'rev_timestamp DESC', 'LIMIT' => 5000 ) // SELECT options
  60         );
  61 }
  62
  63 function rebuildRecentChangesTablePass2()
  64 {
  65         $dbw = wfGetDB( DB_MASTER );
  66         list ($recentchanges, $revision) = $dbw->tableNamesN( 'recentchanges', 'revision' );
  67
  68         print( "Updating links and size differences...\n" );
  69
  70         # Fill in the rc_last_oldid field, which points to the previous edit
  71         $sql = "SELECT rc_cur_id,rc_this_oldid,rc_timestamp FROM $recentchanges " .
  72           "ORDER BY rc_cur_id,rc_timestamp";
  73         $res = $dbw->query( $sql, DB_MASTER );
  74
  75         $lastCurId = 0;
  76         $lastOldId = 0;
  77         while ( $obj = $dbw->fetchObject( $res ) ) {
  78                 $new = 0;
  79                 if( $obj->rc_cur_id != $lastCurId ) {
  80                         # Switch! Look up the previous last edit, if any
  81                         $lastCurId = intval( $obj->rc_cur_id );
  82                         $emit = $obj->rc_timestamp;
  83                         $sql2 = "SELECT rev_id, rev_len FROM $revision " .
  84                                 "WHERE rev_page={$lastCurId} ".
  85                                 "AND rev_timestamp<'{$emit}' ORDER BY rev_timestamp DESC LIMIT 1";
  86                         $res2 = $dbw->query( $sql2 );
  87                         if( $row = $dbw->fetchObject( $res2 ) ) {
  88                                 $lastOldId = intval( $row->rev_id );
  89                                 $lastSize = $row->rev_len; # Grab the last text size
  90                                 if(!is_numeric($lastSize)) $lastSize = 'NULL'; # Set last text size to null if not available
  91                         } else {
  92                                 # No previous edit
  93                                 $lastOldId = 0;
  94                                 $lastSize = 'NULL';
  95                                 $new = 1;
  96                         }
  97                         $dbw->freeResult( $res2 );
  98                 }
  99                 if( $lastCurId == 0 ) {
 100                         print "Uhhh, something wrong? No curid\n";
 101                 } else {
 102                         # Grab the entry's text size
 103                         $size = $dbw->selectField( 'revision', 'rev_len', array('rev_id' => $obj->rc_this_oldid ) );
 104                         $size = $size ? $size : 'NULL';
 105
 106                         $sql3 = "UPDATE $recentchanges SET rc_last_oldid=$lastOldId,rc_new=$new,rc_type=$new," .
 107                                 "rc_old_len=$lastSize,rc_new_len=$size " .
 108                                 "WHERE rc_cur_id={$lastCurId} AND rc_this_oldid={$obj->rc_this_oldid}";
 109                         $dbw->query( $sql3 );
 110
 111                         $lastOldId = intval( $obj->rc_this_oldid );
 112                 }
 113         }
 114         $dbw->freeResult( $res );
 115 }
 116
 117 function rebuildRecentChangesTablePass3()
 118 {
 119         global $wgGroupPermissions, $wgUseRCPatrol;
 120
 121         $dbw = wfGetDB( DB_MASTER );
 122
 123         list($recentchanges,$usergroups,$user) = $dbw->tableNamesN( 'recentchanges', 'user_groups', 'user' );
 124
 125         $botgroups = $autopatrolgroups = array();
 126         foreach( $wgGroupPermissions as $group => $rights ) {
 127                 if( isset( $rights['bot'] ) && $rights['bot'] == true ) {
 128                         $botgroups[] = $dbw->addQuotes( $group );
 129                 }
 130                 if( $wgUseRCPatrol && isset( $rights['autopatrol'] ) && $rights['autopatrol'] == true ) {
 131                         $autopatrolgroups[] = $dbw->addQuotes( $group );
 132                 }
 133         }
 134         # Flag our recent bot edits
 135         if( !empty($botgroups) ) {
 136                 $botwhere = implode(',',$botgroups);
 137                 $botusers = array();
 138
 139                 print( "Flagging bot account edits...\n" );
 140
 141                 # Find all users that are bots
 142                 $sql = "SELECT DISTINCT user_name FROM $usergroups, $user " .
 143                         "WHERE ug_group IN($botwhere) AND user_id = ug_user";
 144                 $res = $dbw->query( $sql, DB_MASTER );
 145
 146                 while( $obj = $dbw->fetchObject( $res ) ) {
 147                         $botusers[] = $dbw->addQuotes( $obj->user_name );
 148                 }
 149                 # Fill in the rc_bot field
 150                 if( !empty($botusers) ) {
 151                         $botwhere = implode(',',$botusers);
 152                         $sql2 = "UPDATE $recentchanges SET rc_bot=1 " .
 153                                 "WHERE rc_user_text IN($botwhere)";
 154                         $dbw->query( $sql2 );
 155                 }
 156         }
 157         # Flag our recent autopatrolled edits
 158         if( !empty($autopatrolgroups) ) {
 159                 $patrolwhere = implode(',',$autopatrolgroups);
 160                 $patrolusers = array();
 161
 162                 print( "Flagging auto-patrolled edits...\n" );
 163
 164                 # Find all users in RC with autopatrol rights
 165                 $sql = "SELECT DISTINCT user_name FROM $usergroups, $user " .
 166                         "WHERE ug_group IN($patrolwhere) AND user_id = ug_user";
 167                 $res = $dbw->query( $sql, DB_MASTER );
 168
 169                 while( $obj = $dbw->fetchObject( $res ) ) {
 170                         $patrolusers[] = $dbw->addQuotes( $obj->user_name );
 171                 }
 172
 173                 # Fill in the rc_patrolled field
 174                 if( !empty($patrolusers) ) {
 175                         $patrolwhere = implode(',',$patrolusers);
 176                         $sql2 = "UPDATE $recentchanges SET rc_patrolled=1 " .
 177                                 "WHERE rc_user_text IN($patrolwhere)";
 178                         $dbw->query( $sql2 );
 179                 }
 180         }
 181
 182         $dbw->freeResult( $res );
 183 }
 184
 185 ?>