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         $cutoff = time() - $wgRCMaxAge;
  28         $dbw->insertSelect( 'recentchanges', array( 'page', 'revision' ),
  29                 array(
  30                         'rc_timestamp'  => 'rev_timestamp',
  31                         'rc_cur_time'   => 'rev_timestamp',
  32                         'rc_user'       => 'rev_user',
  33                         'rc_user_text'  => 'rev_user_text',
  34                         'rc_namespace'  => 'page_namespace',
  35                         'rc_title'      => 'page_title',
  36                         'rc_comment'    => 'rev_comment',
  37                         'rc_minor'      => 'rev_minor_edit',
  38                         'rc_bot'        => 0,
  39                         'rc_new'        => 'page_is_new',
  40                         'rc_cur_id'     => 'page_id',
  41                         'rc_this_oldid' => 'rev_id',
  42                         'rc_last_oldid' => 0, // is this ok?
  43                         'rc_type'       => $dbw->conditional( 'page_is_new != 0', RC_NEW, RC_EDIT ),
  44                 ), array(
  45                         'rev_timestamp > ' . $dbw->addQuotes( $dbw->timestamp( $cutoff ) ),
  46                         'rev_page=page_id'
  47                 ), $fname,
  48                 array(), // INSERT options
  49                 array( 'ORDER BY' => 'rev_timestamp DESC', 'LIMIT' => 5000 ) // SELECT options
  50         );
  51 }
  52
  53 function rebuildRecentChangesTablePass2()
  54 {
  55         $dbw = wfGetDB( DB_MASTER );
  56         list ($recentchanges, $revision) = $dbw->tableNamesN( 'recentchanges', 'revision' );
  57
  58         print( "Updating links and size differences...\n" );
  59
  60         # Fill in the rc_last_oldid field, which points to the previous edit
  61         $sql = "SELECT rc_cur_id,rc_this_oldid,rc_timestamp FROM $recentchanges " .
  62           "ORDER BY rc_cur_id,rc_timestamp";
  63         $res = $dbw->query( $sql, DB_MASTER );
  64
  65         $lastCurId = 0;
  66         $lastOldId = 0;
  67         while ( $obj = $dbw->fetchObject( $res ) ) {
  68                 $new = 0;
  69                 if( $obj->rc_cur_id != $lastCurId ) {
  70                         # Switch! Look up the previous last edit, if any
  71                         $lastCurId = intval( $obj->rc_cur_id );
  72                         $emit = $obj->rc_timestamp;
  73                         $sql2 = "SELECT rev_id, rev_len FROM $revision " .
  74                                 "WHERE rev_page={$lastCurId} ".
  75                                 "AND rev_timestamp<'{$emit}' ORDER BY rev_timestamp DESC LIMIT 1";
  76                         $res2 = $dbw->query( $sql2 );
  77                         if( $row = $dbw->fetchObject( $res2 ) ) {
  78                                 $lastOldId = intval( $row->rev_id );
  79                                 $lastSize = $row->rev_len; # Grab the last text size
  80                         } else {
  81                                 # No previous edit
  82                                 $lastOldId = 0;
  83                                 $lastSize = 'NULL';
  84                                 $new = 1;
  85                         }
  86                         $dbw->freeResult( $res2 );
  87                 }
  88                 if( $lastCurId == 0 ) {
  89                         print "Uhhh, something wrong? No curid\n";
  90                 } else {
  91                         # Grab the entry's text size
  92                         $size = $dbw->selectField( 'revision', 'rev_len', array('rev_id' => $obj->rc_this_oldid ) );
  93                         $size = $size ? $size : 'NULL';
  94
  95                         $sql3 = "UPDATE $recentchanges SET rc_last_oldid=$lastOldId,rc_new=$new,rc_type=$new," .
  96                                 "rc_old_len='$lastSize',rc_new_len='$size' " .
  97                                 "WHERE rc_cur_id={$lastCurId} AND rc_this_oldid={$obj->rc_this_oldid}";
  98                         $dbw->query( $sql3 );
  99
 100                         $lastOldId = intval( $obj->rc_this_oldid );
 101                 }
 102         }
 103         $dbw->freeResult( $res );
 104 }
 105
 106 function rebuildRecentChangesTablePass3()
 107 {
 108         global $wgGroupPermissions, $wgUseRCPatrol;
 109
 110         $dbw = wfGetDB( DB_MASTER );
 111
 112         list($recentchanges,$usergroups,$user) = $dbw->tableNamesN( 'recentchanges', 'user_groups', 'user' );
 113
 114         $botgroups = $autopatrolgroups = array();
 115         foreach( $wgGroupPermissions as $group => $rights ) {
 116                 if( isset( $rights['bot'] ) && $rights['bot'] == true ) {
 117                         $botgroups[] = $dbw->addQuotes( $group );
 118                 }
 119                 if( $wgUseRCPatrol && isset( $rights['autopatrol'] ) && $rights['autopatrol'] == true ) {
 120                         $autopatrolgroups[] = $dbw->addQuotes( $group );
 121                 }
 122         }
 123         # Flag our recent bot edits
 124         if( !empty($botgroups) ) {
 125                 $botwhere = implode(',',$botgroups);
 126                 $botusers = array();
 127
 128                 print( "Flagging bot account edits...\n" );
 129
 130                 # Find all users that are bots
 131                 $sql = "SELECT DISTINCT user_name FROM $usergroups, $user " .
 132                         "WHERE ug_group IN($botwhere) AND user_id = ug_user";
 133                 $res = $dbw->query( $sql, DB_MASTER );
 134
 135                 while( $obj = $dbw->fetchObject( $res ) ) {
 136                         $botusers[] = $dbw->addQuotes( $obj->user_name );
 137                 }
 138                 # Fill in the rc_bot field
 139                 if( !empty($botusers) ) {
 140                         $botwhere = implode(',',$botusers);
 141                         $sql2 = "UPDATE $recentchanges SET rc_bot=1 " .
 142                                 "WHERE rc_user_text IN($botwhere)";
 143                         $dbw->query( $sql2 );
 144                 }
 145         }
 146         # Flag our recent autopatrolled edits
 147         if( !empty($autopatrolgroups) ) {
 148                 $patrolwhere = implode(',',$autopatrolgroups);
 149                 $patrolusers = array();
 150
 151                 print( "Flagging auto-patrolled edits...\n" );
 152
 153                 # Find all users in RC with autopatrol rights
 154                 $sql = "SELECT DISTINCT user_name FROM $usergroups, $user " .
 155                         "WHERE ug_group IN($patrolwhere) AND user_id = ug_user";
 156                 $res = $dbw->query( $sql, DB_MASTER );
 157
 158                 while( $obj = $dbw->fetchObject( $res ) ) {
 159                         $patrolusers[] = $dbw->addQuotes( $obj->user_name );
 160                 }
 161
 162                 # Fill in the rc_patrolled field
 163                 if( !empty($patrolusers) ) {
 164                         $patrolwhere = implode(',',$patrolusers);
 165                         $sql2 = "UPDATE $recentchanges SET rc_patrolled=1 " .
 166                                 "WHERE rc_user_text IN($patrolwhere)";
 167                         $dbw->query( $sql2 );
 168                 }
 169         }
 170
 171         $dbw->freeResult( $res );
 172 }
 173
 174 ?>