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         extract( $dbw->tableNames( 'recentchanges', 'cur', 'old' ) );
  15
  16         $dbw->delete( 'recentchanges', '*' );
  17
  18         print( "Loading from page and revision tables...\n" );
  19
  20         global $wgRCMaxAge;
  21         $cutoff = time() - $wgRCMaxAge;
  22         $dbw->insertSelect( 'recentchanges', array( 'page', 'revision' ),
  23                 array(
  24                         'rc_timestamp'  => 'rev_timestamp',
  25                         'rc_cur_time'   => 'rev_timestamp',
  26                         'rc_user'       => 'rev_user',
  27                         'rc_user_text'  => 'rev_user_text',
  28                         'rc_namespace'  => 'page_namespace',
  29                         'rc_title'      => 'page_title',
  30                         'rc_comment'    => 'rev_comment',
  31                         'rc_minor'      => 'rev_minor_edit',
  32                         'rc_bot'        => 0,
  33                         'rc_new'        => 'page_is_new',
  34                         'rc_cur_id'     => 'page_id',
  35                         'rc_this_oldid' => 'rev_id',
  36                         'rc_last_oldid' => 0, // is this ok?
  37                         'rc_type'       => $dbw->conditional( 'page_is_new != 0', RC_NEW, RC_EDIT ),
  38                 ), array(
  39                         'rev_timestamp > ' . $dbw->addQuotes( $dbw->timestamp( $cutoff ) ),
  40                         'rev_page=page_id'
  41                 ), $fname,
  42                 array(), // INSERT options
  43                 array( 'ORDER BY' => 'rev_timestamp DESC', 'LIMIT' => 5000 ) // SELECT options
  44         );
  45 }
  46
  47 function rebuildRecentChangesTablePass2()
  48 {
  49         $dbw = wfGetDB( DB_MASTER );
  50         list ($recentchanges, $revision) = $dbw->tableNamesN( 'recentchanges', 'revision' );
  51
  52         print( "Updating links and size differences...\n" );
  53
  54         # Fill in the rc_last_oldid field, which points to the previous edit
  55         $sql = "SELECT rc_cur_id,rc_this_oldid,rc_timestamp FROM $recentchanges " .
  56           "ORDER BY rc_cur_id,rc_timestamp";
  57         $res = $dbw->query( $sql, DB_MASTER );
  58
  59         $lastCurId = 0;
  60         $lastOldId = 0;
  61         while ( $obj = $dbw->fetchObject( $res ) ) {
  62                 $new = 0;
  63                 if( $obj->rc_cur_id != $lastCurId ) {
  64                         # Switch! Look up the previous last edit, if any
  65                         $lastCurId = intval( $obj->rc_cur_id );
  66                         $emit = $obj->rc_timestamp;
  67                         $sql2 = "SELECT rev_id, rev_len, rev_text_id FROM $revision " .
  68                                 "WHERE rev_page={$lastCurId} ".
  69                                 "AND rev_timestamp<'{$emit}' ORDER BY rev_timestamp DESC LIMIT 1";
  70                         $res2 = $dbw->query( $sql2 );
  71                         if( $row = $dbw->fetchObject( $res2 ) ) {
  72                                 $lastOldId = intval( $row->rev_id );
  73                                 $lastTextId = intval( $row->rev_text_id );
  74                                 $lastSize = $row->rev_len; # Grab the last text size
  75                         } else {
  76                                 # No previous edit
  77                                 $lastOldId = 0;
  78                                 $lastTextId = 0;
  79                                 $lastSize = NULL;
  80                                 $new = 1;
  81                         }
  82                         $dbw->freeResult( $res2 );
  83                 }
  84                 if( $lastCurId == 0 ) {
  85                         print "Uhhh, something wrong? No curid\n";
  86                 } else {
  87                         # Check the text if not in rev_len for the last entry's text size
  88                         if( !$lastSize ) {
  89                                 $lastText = $dbw->selectField( 'text', 'old_text', array('old_id' => $lastTextId ) );
  90                                 $lastSize = $lastText ? strlen($lastText) : 'NULL';
  91                         }
  92                         # Grab the entry's text size
  93                         $res3 = $dbw->select( 'revision', array('rev_len','rev_text_id'), array('rev_id' => $obj->rc_this_oldid ) );
  94                         if( $row = $dbw->fetchObject( $res3 ) ) {
  95                                 $textId = $row->rev_text_id;
  96                                 $size = $row->rev_len;
  97                         } else {
  98                                 $textId = 0;
  99                                 $size = NULL;
 100                         }
 101                         # Check the text if not in rev_len for the entry's text size
 102                         if( !$size ) {
 103                                 $text = $dbw->selectField( 'text', 'old_text', array('old_id' => $textId ) );
 104                                 $size = $text ? strlen($text) : 'NULL';
 105                         }
 106
 107                         $sql3 = "UPDATE $recentchanges SET rc_last_oldid=$lastOldId,rc_new=$new,rc_type=$new," .
 108                                 "rc_old_len='$lastSize',rc_new_len='$size' " .
 109                                 "WHERE rc_cur_id={$lastCurId} AND rc_this_oldid={$obj->rc_this_oldid}";
 110                         $dbw->query( $sql3 );
 111
 112                         $lastOldId = intval( $obj->rc_this_oldid );
 113                 }
 114         }
 115         $dbw->freeResult( $res );
 116 }
 117
 118 function rebuildRecentChangesTablePass3()
 119 {
 120         global $wgGroupPermissions, $wgUseRCPatrol;
 121
 122         $dbw = wfGetDB( DB_MASTER );
 123
 124         list ($recentchanges, $usergroups) = $dbw->tableNamesN( 'recentchanges', 'user_groups' );
 125
 126         $botgroups = $autopatrolgroups = array();
 127         foreach( $wgGroupPermissions as $group => $rights ) {
 128                 if( isset( $rights['bot'] ) && $rights['bot'] == true ) {
 129                         $botgroups[] = "'" . $dbw->strencode( $group ) . "'";
 130                 }
 131                 if( $wgUseRCPatrol && isset( $rights['autopatrol'] ) && $rights['autopatrol'] == true ) {
 132                         $autopatrolgroups[] = "'" . $dbw->strencode( $group ) . "'";
 133                 }
 134         }
 135         # Flag our recent bot edits
 136         if( !empty($botgroups) ) {
 137                 $botwhere = implode(',',$botgroups);
 138                 $botusers = array();
 139
 140                 print( "Flagging bot account edits...\n" );
 141
 142                 # Find all users in RC that are bots
 143                 $sql = "SELECT DISTINCT rc_user FROM $recentchanges " .
 144                         "LEFT JOIN $usergroups ON rc_user=ug_user " .
 145                         "WHERE ug_group IN($botwhere)";
 146                 $res = $dbw->query( $sql, DB_MASTER );
 147
 148                 while( $obj = $dbw->fetchObject( $res ) ) {
 149                         $botusers[] = $obj->rc_user;
 150                 }
 151                 # Fill in the rc_bot field
 152                 if( !empty($botusers) ) {
 153                         $botwhere = implode(',',$botusers);
 154                         $sql2 = "UPDATE $recentchanges SET rc_bot=1 " .
 155                                 "WHERE rc_user IN($botwhere)";
 156                         $dbw->query( $sql2 );
 157                 }
 158         }
 159         # Flag our recent autopatrolled edits
 160         if( !empty($autopatrolgroups) ) {
 161                 $patrolwhere = implode(',',$autopatrolgroups);
 162                 $patrolusers = array();
 163
 164                 print( "Flagging auto-patrolled edits...\n" );
 165
 166                 # Find all users in RC with autopatrol rights
 167                 $sql = "SELECT DISTINCT rc_user FROM $recentchanges " .
 168                         "LEFT JOIN $usergroups ON rc_user=ug_user " .
 169                         "WHERE ug_group IN($patrolwhere)";
 170                 $res = $dbw->query( $sql, DB_MASTER );
 171
 172                 while( $obj = $dbw->fetchObject( $res ) ) {
 173                         $patrolusers[] = $obj->rc_user;
 174                 }
 175
 176                 # Fill in the rc_patrolled field
 177                 if( !empty($patrolusers) ) {
 178                         $patrolwhere = implode(',',$patrolusers);
 179                         $sql2 = "UPDATE $recentchanges SET rc_patrolled=1 " .
 180                                 "WHERE rc_user IN($patrolwhere)";
 181                         $dbw->query( $sql2 );
 182                 }
 183         }
 184
 185         $dbw->freeResult( $res );
 186 }
 187
 188 ?>