maintenance/rebuildrecentchanges.inc

   1 <?php
   2 /**
   3  * Rebuild recent changes table.
   4  *
   5  * @todo document
   6  * @addtogroup Maintenance
   7  */
   8
   9 /** */
  10 function rebuildRecentChangesTablePass1()
  11 {
  12         $fname = 'rebuildRecentChangesTablePass1';
  13         $dbw = wfGetDB( DB_MASTER );
  14
  15         $dbw->delete( 'recentchanges', '*' );
  16
  17         print( "Loading from page and revision tables...\n" );
  18
  19         global $wgRCMaxAge;
  20         $cutoff = time() - $wgRCMaxAge;
  21         $dbw->insertSelect( 'recentchanges', array( 'page', 'revision' ),
  22                 array(
  23                         'rc_timestamp'  => 'rev_timestamp',
  24                         'rc_cur_time'   => 'rev_timestamp',
  25                         'rc_user'       => 'rev_user',
  26                         'rc_user_text'  => 'rev_user_text',
  27                         'rc_namespace'  => 'page_namespace',
  28                         'rc_title'      => 'page_title',
  29                         'rc_comment'    => 'rev_comment',
  30                         'rc_minor'      => 'rev_minor_edit',
  31                         'rc_bot'        => 0,
  32                         'rc_new'        => 'page_is_new',
  33                         'rc_cur_id'     => 'page_id',
  34                         'rc_this_oldid' => 'rev_id',
  35                         'rc_last_oldid' => 0, // is this ok?
  36                         'rc_type'       => $dbw->conditional( 'page_is_new != 0', RC_NEW, RC_EDIT ),
  37                 ), array(
  38                         'rev_timestamp > ' . $dbw->addQuotes( $dbw->timestamp( $cutoff ) ),
  39                         'rev_page=page_id'
  40                 ), $fname,
  41                 array(), // INSERT options
  42                 array( 'ORDER BY' => 'rev_timestamp DESC', 'LIMIT' => 5000 ) // SELECT options
  43         );
  44 }
  45
  46 function rebuildRecentChangesTablePass2()
  47 {
  48         $dbw = wfGetDB( DB_MASTER );
  49         list ($recentchanges, $revision) = $dbw->tableNamesN( 'recentchanges', 'revision' );
  50
  51         print( "Updating links and size differences...\n" );
  52
  53         # Fill in the rc_last_oldid field, which points to the previous edit
  54         $sql = "SELECT rc_cur_id,rc_this_oldid,rc_timestamp FROM $recentchanges " .
  55           "ORDER BY rc_cur_id,rc_timestamp";
  56         $res = $dbw->query( $sql, DB_MASTER );
  57
  58         $lastCurId = 0;
  59         $lastOldId = 0;
  60         while ( $obj = $dbw->fetchObject( $res ) ) {
  61                 $new = 0;
  62                 if( $obj->rc_cur_id != $lastCurId ) {
  63                         # Switch! Look up the previous last edit, if any
  64                         $lastCurId = intval( $obj->rc_cur_id );
  65                         $emit = $obj->rc_timestamp;
  66                         $sql2 = "SELECT rev_id, rev_len FROM $revision " .
  67                                 "WHERE rev_page={$lastCurId} ".
  68                                 "AND rev_timestamp<'{$emit}' ORDER BY rev_timestamp DESC LIMIT 1";
  69                         $res2 = $dbw->query( $sql2 );
  70                         if( $row = $dbw->fetchObject( $res2 ) ) {
  71                                 $lastOldId = intval( $row->rev_id );
  72                                 $lastSize = $row->rev_len; # Grab the last text size
  73                         } else {
  74                                 # No previous edit
  75                                 $lastOldId = 0;
  76                                 $lastSize = 'NULL';
  77                                 $new = 1;
  78                         }
  79                         $dbw->freeResult( $res2 );
  80                 }
  81                 if( $lastCurId == 0 ) {
  82                         print "Uhhh, something wrong? No curid\n";
  83                 } else {
  84                         # Grab the entry's text size
  85                         $size = $dbw->selectField( 'revision', 'rev_len', array('rev_id' => $obj->rc_this_oldid ) );
  86                         $size = $size ? $size : 'NULL';
  87
  88                         $sql3 = "UPDATE $recentchanges SET rc_last_oldid=$lastOldId,rc_new=$new,rc_type=$new," .
  89                                 "rc_old_len='$lastSize',rc_new_len='$size' " .
  90                                 "WHERE rc_cur_id={$lastCurId} AND rc_this_oldid={$obj->rc_this_oldid}";
  91                         $dbw->query( $sql3 );
  92
  93                         $lastOldId = intval( $obj->rc_this_oldid );
  94                 }
  95         }
  96         $dbw->freeResult( $res );
  97 }
  98
  99 function rebuildRecentChangesTablePass3()
 100 {
 101         global $wgGroupPermissions, $wgUseRCPatrol;
 102
 103         $dbw = wfGetDB( DB_MASTER );
 104
 105         list($recentchanges,$usergroups,$user) = $dbw->tableNamesN( 'recentchanges', 'user_groups', 'user' );
 106
 107         $botgroups = $autopatrolgroups = array();
 108         foreach( $wgGroupPermissions as $group => $rights ) {
 109                 if( isset( $rights['bot'] ) && $rights['bot'] == true ) {
 110                         $botgroups[] = "'" . $dbw->strencode( $group ) . "'";
 111                 }
 112                 if( $wgUseRCPatrol && isset( $rights['autopatrol'] ) && $rights['autopatrol'] == true ) {
 113                         $autopatrolgroups[] = "'" . $dbw->strencode( $group ) . "'";
 114                 }
 115         }
 116         # Flag our recent bot edits
 117         if( !empty($botgroups) ) {
 118                 $botwhere = implode(',',$botgroups);
 119                 $botusers = array();
 120
 121                 print( "Flagging bot account edits...\n" );
 122
 123                 # Find all users that are bots
 124                 $sql = "SELECT DISTINCT user_name FROM $usergroups, $user " .
 125                         "WHERE ug_group IN($botwhere) AND user_id = ug_user";
 126                 $res = $dbw->query( $sql, DB_MASTER );
 127
 128                 while( $obj = $dbw->fetchObject( $res ) ) {
 129                         $botusers[] = $dbw->strencode( $obj->user_name );
 130                 }
 131                 # Fill in the rc_bot field
 132                 if( !empty($botusers) ) {
 133                         $botwhere = implode(',',$botusers);
 134                         $sql2 = "UPDATE $recentchanges SET rc_bot=1 " .
 135                                 "WHERE rc_user_text IN($botwhere)";
 136                         $dbw->query( $sql2 );
 137                 }
 138         }
 139         # Flag our recent autopatrolled edits
 140         if( !empty($autopatrolgroups) ) {
 141                 $patrolwhere = implode(',',$autopatrolgroups);
 142                 $patrolusers = array();
 143
 144                 print( "Flagging auto-patrolled edits...\n" );
 145
 146                 # Find all users in RC with autopatrol rights
 147                 $sql = "SELECT DISTINCT user_name FROM $usergroups, $user " .
 148                         "WHERE ug_group IN($patrolwhere) AND user_id = ug_user";
 149                 $res = $dbw->query( $sql, DB_MASTER );
 150
 151                 while( $obj = $dbw->fetchObject( $res ) ) {
 152                         $patrolusers[] = $dbw->strencode( $obj->user_name );
 153                 }
 154
 155                 # Fill in the rc_patrolled field
 156                 if( !empty($patrolusers) ) {
 157                         $patrolwhere = implode(',',$patrolusers);
 158                         $sql2 = "UPDATE $recentchanges SET rc_patrolled=1 " .
 159                                 "WHERE rc_user_text IN($patrolwhere)";
 160                         $dbw->query( $sql2 );
 161                 }
 162         }
 163
 164         $dbw->freeResult( $res );
 165 }
 166
 167 ?>