maintenance/rebuildrecentchanges.inc

   1 <?php
   2 /**
   3  * Rebuild recent changes table.
   4  *
   5  * @file
   6  * @todo document
   7  * @ingroup Maintenance
   8  */
   9
  10 /** Public entry; more passes might come in! :) */
  11 function rebuildRecentChangesTable() {
  12         rebuildRecentChangesTablePass1();
  13         rebuildRecentChangesTablePass2();
  14         rebuildRecentChangesTablePass3();
  15         rebuildRecentChangesTablePass4();
  16 }
  17
  18 /** */
  19 function rebuildRecentChangesTablePass1()
  20 {
  21         $dbw = wfGetDB( DB_MASTER );
  22
  23         $dbw->delete( 'recentchanges', '*' );
  24
  25         print( "Loading from page and revision tables...\n" );
  26
  27         global $wgRCMaxAge;
  28
  29         print( '$wgRCMaxAge=' . $wgRCMaxAge );
  30         $days = $wgRCMaxAge / 24 / 3600;
  31         if ( intval($days) == $days ) {
  32                         print( " (" . $days . " days)\n" );
  33         } else {
  34                         print( " (approx. " .  intval($days) . " days)\n" );
  35         }
  36
  37         $cutoff = time() - $wgRCMaxAge;
  38         $dbw->insertSelect( 'recentchanges', array( 'page', 'revision' ),
  39                 array(
  40                         'rc_timestamp'  => 'rev_timestamp',
  41                         'rc_cur_time'   => 'rev_timestamp',
  42                         'rc_user'       => 'rev_user',
  43                         'rc_user_text'  => 'rev_user_text',
  44                         'rc_namespace'  => 'page_namespace',
  45                         'rc_title'      => 'page_title',
  46                         'rc_comment'    => 'rev_comment',
  47                         'rc_minor'      => 'rev_minor_edit',
  48                         'rc_bot'        => 0,
  49                         'rc_new'        => 'page_is_new',
  50                         'rc_cur_id'     => 'page_id',
  51                         'rc_this_oldid' => 'rev_id',
  52                         'rc_last_oldid' => 0, // is this ok?
  53                         'rc_type'       => $dbw->conditional( 'page_is_new != 0', RC_NEW, RC_EDIT ),
  54                         'rc_deleted'    => 'rev_deleted'
  55                 ), array(
  56                         'rev_timestamp > ' . $dbw->addQuotes( $dbw->timestamp( $cutoff ) ),
  57                         'rev_page=page_id'
  58                 ), __METHOD__,
  59                 array(), // INSERT options
  60                 array( 'ORDER BY' => 'rev_timestamp DESC', 'LIMIT' => 5000 ) // SELECT options
  61         );
  62 }
  63
  64 function rebuildRecentChangesTablePass2()
  65 {
  66         $dbw = wfGetDB( DB_MASTER );
  67         list ($recentchanges, $revision) = $dbw->tableNamesN( 'recentchanges', 'revision' );
  68
  69         print( "Updating links and size differences...\n" );
  70
  71         # Fill in the rc_last_oldid field, which points to the previous edit
  72         $sql = "SELECT rc_cur_id,rc_this_oldid,rc_timestamp FROM $recentchanges " .
  73           "ORDER BY rc_cur_id,rc_timestamp";
  74         $res = $dbw->query( $sql, DB_MASTER );
  75
  76         $lastCurId = 0;
  77         $lastOldId = 0;
  78         while ( $obj = $dbw->fetchObject( $res ) ) {
  79                 $new = 0;
  80                 if( $obj->rc_cur_id != $lastCurId ) {
  81                         # Switch! Look up the previous last edit, if any
  82                         $lastCurId = intval( $obj->rc_cur_id );
  83                         $emit = $obj->rc_timestamp;
  84                         $sql2 = "SELECT rev_id,rev_len FROM $revision " .
  85                                 "WHERE rev_page={$lastCurId} ".
  86                                 "AND rev_timestamp<'{$emit}' ORDER BY rev_timestamp DESC LIMIT 1";
  87                         $res2 = $dbw->query( $sql2 );
  88                         if( $row = $dbw->fetchObject( $res2 ) ) {
  89                                 $lastOldId = intval($row->rev_id);
  90                                 # Grab the last text size if available
  91                                 $lastSize = !is_null($row->rev_len) ? intval($row->rev_len) : 'NULL';
  92                         } else {
  93                                 # No previous edit
  94                                 $lastOldId = 0;
  95                                 $lastSize = 'NULL';
  96                                 $new = 1; // probably true
  97                         }
  98                         $dbw->freeResult( $res2 );
  99                 }
 100                 if( $lastCurId == 0 ) {
 101                         print "Uhhh, something wrong? No curid\n";
 102                 } else {
 103                         # Grab the entry's text size
 104                         $size = $dbw->selectField( 'revision', 'rev_len', array('rev_id' => $obj->rc_this_oldid ) );
 105                         $size = !is_null($size) ? intval($size) : 'NULL';
 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                         $lastSize = $size;
 114                 }
 115         }
 116         $dbw->freeResult( $res );
 117 }
 118
 119 function rebuildRecentChangesTablePass3()
 120 {
 121         $dbw = wfGetDB( DB_MASTER );
 122
 123         print( "Loading from user, page, and logging tables...\n" );
 124
 125         global $wgRCMaxAge, $wgLogTypes, $wgLogRestrictions;
 126         // Some logs don't go in RC. This should check for that
 127         $basicRCLogs = array_diff( $wgLogTypes, array_keys( $wgLogRestrictions ) );
 128
 129         // Escape...blah blah
 130         $selectLogs = array();
 131         foreach( $basicRCLogs as $logtype ) {
 132                 $safetype = $dbw->strencode( $logtype );
 133                 $selectLogs[] = "'$safetype'";
 134         }
 135
 136         $cutoff = time() - $wgRCMaxAge;
 137         list($logging, $page) = $dbw->tableNamesN( 'logging', 'page' );
 138         $dbw->insertSelect( 'recentchanges', array( 'user', "$logging LEFT JOIN $page ON (log_namespace=page_namespace AND log_title=page_title)" ),
 139                 array(
 140                         'rc_timestamp'  => 'log_timestamp',
 141                         'rc_cur_time'   => 'log_timestamp',
 142                         'rc_user'       => 'log_user',
 143                         'rc_user_text'  => 'user_name',
 144                         'rc_namespace'  => 'log_namespace',
 145                         'rc_title'      => 'log_title',
 146                         'rc_comment'    => 'log_comment',
 147                         'rc_minor'      => 0,
 148                         'rc_bot'        => 0,
 149                         'rc_patrolled'  => 1,
 150                         'rc_new'        => 0,
 151                         'rc_this_oldid' => 0,
 152                         'rc_last_oldid' => 0,
 153                         'rc_type'       => RC_LOG,
 154                         'rc_cur_id'     => 'COALESCE(page_id, 0)',
 155                         'rc_log_type'   => 'log_type',
 156                         'rc_log_action' => 'log_action',
 157                         'rc_logid'      => 'log_id',
 158                         'rc_params'     => 'log_params',
 159                         'rc_deleted'    => 'log_deleted'
 160                 ), array(
 161                         'log_timestamp > ' . $dbw->addQuotes( $dbw->timestamp( $cutoff ) ),
 162                         'log_user=user_id',
 163                         'log_type IN(' . implode(',',$selectLogs) . ')'
 164                 ), __METHOD__,
 165                 array(), // INSERT options
 166                 array( 'ORDER BY' => 'log_timestamp DESC', 'LIMIT' => 5000 ) // SELECT options
 167         );
 168 }
 169
 170 function rebuildRecentChangesTablePass4()
 171 {
 172         global $wgGroupPermissions, $wgUseRCPatrol;
 173
 174         $dbw = wfGetDB( DB_MASTER );
 175
 176         list($recentchanges,$usergroups,$user) = $dbw->tableNamesN( 'recentchanges', 'user_groups', 'user' );
 177
 178         $botgroups = $autopatrolgroups = array();
 179         foreach( $wgGroupPermissions as $group => $rights ) {
 180                 if( isset( $rights['bot'] ) && $rights['bot'] == true ) {
 181                         $botgroups[] = $dbw->addQuotes( $group );
 182                 }
 183                 if( $wgUseRCPatrol && isset( $rights['autopatrol'] ) && $rights['autopatrol'] == true ) {
 184                         $autopatrolgroups[] = $dbw->addQuotes( $group );
 185                 }
 186         }
 187         # Flag our recent bot edits
 188         if( !empty($botgroups) ) {
 189                 $botwhere = implode(',',$botgroups);
 190                 $botusers = array();
 191
 192                 print( "Flagging bot account edits...\n" );
 193
 194                 # Find all users that are bots
 195                 $sql = "SELECT DISTINCT user_name FROM $usergroups, $user " .
 196                         "WHERE ug_group IN($botwhere) AND user_id = ug_user";
 197                 $res = $dbw->query( $sql, DB_MASTER );
 198
 199                 while( $obj = $dbw->fetchObject( $res ) ) {
 200                         $botusers[] = $dbw->addQuotes( $obj->user_name );
 201                 }
 202                 # Fill in the rc_bot field
 203                 if( !empty($botusers) ) {
 204                         $botwhere = implode(',',$botusers);
 205                         $sql2 = "UPDATE $recentchanges SET rc_bot=1 " .
 206                                 "WHERE rc_user_text IN($botwhere)";
 207                         $dbw->query( $sql2 );
 208                 }
 209         }
 210         global $wgMiserMode;
 211         # Flag our recent autopatrolled edits
 212         if( !$wgMiserMode && !empty($autopatrolgroups) ) {
 213                 $patrolwhere = implode(',',$autopatrolgroups);
 214                 $patrolusers = array();
 215
 216                 print( "Flagging auto-patrolled edits...\n" );
 217
 218                 # Find all users in RC with autopatrol rights
 219                 $sql = "SELECT DISTINCT user_name FROM $usergroups, $user " .
 220                         "WHERE ug_group IN($patrolwhere) AND user_id = ug_user";
 221                 $res = $dbw->query( $sql, DB_MASTER );
 222
 223                 while( $obj = $dbw->fetchObject( $res ) ) {
 224                         $patrolusers[] = $dbw->addQuotes( $obj->user_name );
 225                 }
 226
 227                 # Fill in the rc_patrolled field
 228                 if( !empty($patrolusers) ) {
 229                         $patrolwhere = implode(',',$patrolusers);
 230                         $sql2 = "UPDATE $recentchanges SET rc_patrolled=1 " .
 231                                 "WHERE rc_user_text IN($patrolwhere)";
 232                         $dbw->query( $sql2 );
 233                 }
 234         }
 235
 236         $dbw->freeResult( $res );
 237 }