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<?php
/**
* Rebuild recent changes table.
*
* @file
* @todo document
* @ingroup Maintenance
*/
/** Public entry; more passes might come in! :) */
function rebuildRecentChangesTable() {
rebuildRecentChangesTablePass1();
rebuildRecentChangesTablePass2();
rebuildRecentChangesTablePass3();
rebuildRecentChangesTablePass4();
}
/** */
function rebuildRecentChangesTablePass1()
{
$dbw = wfGetDB( DB_MASTER );
$dbw->delete( 'recentchanges', '*' );
print( "Loading from page and revision tables...\n" );
global $wgRCMaxAge;
print( '$wgRCMaxAge=' . $wgRCMaxAge );
$days = $wgRCMaxAge / 24 / 3600;
if ( intval($days) == $days ) {
print( " (" . $days . " days)\n" );
} else {
print( " (approx. " . intval($days) . " days)\n" );
}
$cutoff = time() - $wgRCMaxAge;
$dbw->insertSelect( 'recentchanges', array( 'page', 'revision' ),
array(
'rc_timestamp' => 'rev_timestamp',
'rc_cur_time' => 'rev_timestamp',
'rc_user' => 'rev_user',
'rc_user_text' => 'rev_user_text',
'rc_namespace' => 'page_namespace',
'rc_title' => 'page_title',
'rc_comment' => 'rev_comment',
'rc_minor' => 'rev_minor_edit',
'rc_bot' => 0,
'rc_new' => 'page_is_new',
'rc_cur_id' => 'page_id',
'rc_this_oldid' => 'rev_id',
'rc_last_oldid' => 0, // is this ok?
'rc_type' => $dbw->conditional( 'page_is_new != 0', RC_NEW, RC_EDIT ),
'rc_deleted' => 'rev_deleted'
), array(
'rev_timestamp > ' . $dbw->addQuotes( $dbw->timestamp( $cutoff ) ),
'rev_page=page_id'
), __METHOD__,
array(), // INSERT options
array( 'ORDER BY' => 'rev_timestamp DESC', 'LIMIT' => 5000 ) // SELECT options
);
}
function rebuildRecentChangesTablePass2()
{
$dbw = wfGetDB( DB_MASTER );
list ($recentchanges, $revision) = $dbw->tableNamesN( 'recentchanges', 'revision' );
print( "Updating links and size differences...\n" );
# Fill in the rc_last_oldid field, which points to the previous edit
$sql = "SELECT rc_cur_id,rc_this_oldid,rc_timestamp FROM $recentchanges " .
"ORDER BY rc_cur_id,rc_timestamp";
$res = $dbw->query( $sql, DB_MASTER );
$lastCurId = 0;
$lastOldId = 0;
while ( $obj = $dbw->fetchObject( $res ) ) {
$new = 0;
if( $obj->rc_cur_id != $lastCurId ) {
# Switch! Look up the previous last edit, if any
$lastCurId = intval( $obj->rc_cur_id );
$emit = $obj->rc_timestamp;
$sql2 = "SELECT rev_id,rev_len FROM $revision " .
"WHERE rev_page={$lastCurId} ".
"AND rev_timestamp<'{$emit}' ORDER BY rev_timestamp DESC LIMIT 1";
$res2 = $dbw->query( $sql2 );
if( $row = $dbw->fetchObject( $res2 ) ) {
$lastOldId = intval($row->rev_id);
# Grab the last text size if available
$lastSize = !is_null($row->rev_len) ? intval($row->rev_len) : 'NULL';
} else {
# No previous edit
$lastOldId = 0;
$lastSize = 'NULL';
$new = 1; // probably true
}
$dbw->freeResult( $res2 );
}
if( $lastCurId == 0 ) {
print "Uhhh, something wrong? No curid\n";
} else {
# Grab the entry's text size
$size = $dbw->selectField( 'revision', 'rev_len', array('rev_id' => $obj->rc_this_oldid ) );
$size = !is_null($size) ? intval($size) : 'NULL';
$sql3 = "UPDATE $recentchanges SET rc_last_oldid=$lastOldId,rc_new=$new,rc_type=$new," .
"rc_old_len=$lastSize,rc_new_len=$size " .
"WHERE rc_cur_id={$lastCurId} AND rc_this_oldid={$obj->rc_this_oldid}";
$dbw->query( $sql3 );
$lastOldId = intval( $obj->rc_this_oldid );
}
}
$dbw->freeResult( $res );
}
function rebuildRecentChangesTablePass3()
{
$dbw = wfGetDB( DB_MASTER );
print( "Loading from user, page, and logging tables...\n" );
global $wgRCMaxAge;
// Some logs don't go in RC. This can't really detect all of those.
// At least do the basics logs for a standard install...
// FIXME: this needs to be maintained
$basicRCLogs = array(
'block',
'protect',
'rights',
'delete',
'upload',
'move',
'import',
'merge' );
// Escape...blah blah
$selectLogs = array();
foreach( $basicRCLogs as $logtype ) {
$safetype = $dbw->strencode( $logtype );
$selectLogs[] = "'$safetype'";
}
$cutoff = time() - $wgRCMaxAge;
$dbw->insertSelect( 'recentchanges', array( 'logging', 'page', 'user' ),
array(
'rc_timestamp' => 'log_timestamp',
'rc_cur_time' => 'log_timestamp',
'rc_user' => 'log_user',
'rc_user_text' => 'user_name',
'rc_namespace' => 'log_namespace',
'rc_title' => 'log_title',
'rc_comment' => 'log_comment',
'rc_minor' => 0,
'rc_bot' => 0,
'rc_patrolled' => 1,
'rc_new' => 0,
'rc_this_oldid' => 0,
'rc_last_oldid' => 0,
'rc_type' => RC_LOG,
'rc_cur_id' => 'page_id',
'rc_log_type' => 'log_type',
'rc_log_action' => 'log_action',
'rc_logid' => 'log_id',
'rc_params' => 'log_params',
'rc_deleted' => 'log_deleted'
), array(
'log_timestamp > ' . $dbw->addQuotes( $dbw->timestamp( $cutoff ) ),
'log_user=user_id',
'log_namespace=page_namespace',
'log_title=page_title',
'log_type IN(' . implode(',',$selectLogs) . ')'
), __METHOD__,
array(), // INSERT options
array( 'ORDER BY' => 'log_timestamp DESC', 'LIMIT' => 5000 ) // SELECT options
);
}
function rebuildRecentChangesTablePass4()
{
global $wgGroupPermissions, $wgUseRCPatrol;
$dbw = wfGetDB( DB_MASTER );
list($recentchanges,$usergroups,$user) = $dbw->tableNamesN( 'recentchanges', 'user_groups', 'user' );
$botgroups = $autopatrolgroups = array();
foreach( $wgGroupPermissions as $group => $rights ) {
if( isset( $rights['bot'] ) && $rights['bot'] == true ) {
$botgroups[] = $dbw->addQuotes( $group );
}
if( $wgUseRCPatrol && isset( $rights['autopatrol'] ) && $rights['autopatrol'] == true ) {
$autopatrolgroups[] = $dbw->addQuotes( $group );
}
}
# Flag our recent bot edits
if( !empty($botgroups) ) {
$botwhere = implode(',',$botgroups);
$botusers = array();
print( "Flagging bot account edits...\n" );
# Find all users that are bots
$sql = "SELECT DISTINCT user_name FROM $usergroups, $user " .
"WHERE ug_group IN($botwhere) AND user_id = ug_user";
$res = $dbw->query( $sql, DB_MASTER );
while( $obj = $dbw->fetchObject( $res ) ) {
$botusers[] = $dbw->addQuotes( $obj->user_name );
}
# Fill in the rc_bot field
if( !empty($botusers) ) {
$botwhere = implode(',',$botusers);
$sql2 = "UPDATE $recentchanges SET rc_bot=1 " .
"WHERE rc_user_text IN($botwhere)";
$dbw->query( $sql2 );
}
}
global $wgMiserMode;
# Flag our recent autopatrolled edits
if( !$wgMiserMode && !empty($autopatrolgroups) ) {
$patrolwhere = implode(',',$autopatrolgroups);
$patrolusers = array();
print( "Flagging auto-patrolled edits...\n" );
# Find all users in RC with autopatrol rights
$sql = "SELECT DISTINCT user_name FROM $usergroups, $user " .
"WHERE ug_group IN($patrolwhere) AND user_id = ug_user";
$res = $dbw->query( $sql, DB_MASTER );
while( $obj = $dbw->fetchObject( $res ) ) {
$patrolusers[] = $dbw->addQuotes( $obj->user_name );
}
# Fill in the rc_patrolled field
if( !empty($patrolusers) ) {
$patrolwhere = implode(',',$patrolusers);
$sql2 = "UPDATE $recentchanges SET rc_patrolled=1 " .
"WHERE rc_user_text IN($patrolwhere)";
$dbw->query( $sql2 );
}
}
$dbw->freeResult( $res );
}