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<?php
/**
* Script for periodic off-peak updating of the search index
*
* Usage: php updateSearchIndex.php [-s START] [-e END] [-p POSFILE] [-l LOCKTIME] [-q]
* Where START is the starting timestamp
* END is the ending timestamp
* POSFILE is a file to load timestamps from and save them to, searchUpdate.WIKI_ID.pos by default
* LOCKTIME is how long the searchindex and revision tables will be locked for
* -q means quiet
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @ingroup Maintenance
*/
require_once( dirname(__FILE__) . '/Maintenance.php' );
class UpdateSearchIndex extends Maintenance {
public function __construct() {
parent::__construct();
$this->mDescription = "Script for periodic off-peak updating of the search index";
$this->addOption( 's', 'starting timestamp', false, true );
$this->addOption( 'e', 'Ending timestamp', false, true );
$this->addOption( 'p', 'File for saving/loading timestamps, searchUpdate.WIKI_ID.pos by default', false, true );
$this->addOption( 'l', 'How long the searchindex and revision tables will be locked for', false, true );
}
public function getDbType() {
return Maintenance::DB_ADMIN;
}
public function execute() {
$posFile = $this->getOption( 'p', 'searchUpdate.' . wfWikiId() . '.pos' );
$end = $this->getOption( 'e', wfTimestampNow() );
if ( $this->hasOption( 's' ) ) {
$start = $this->getOption('s');
} elseif( is_readable( 'searchUpdate.pos' ) ) {
# B/c to the old position file name which was hardcoded
# We can safely delete the file when we're done though.
$start = file_get_contents( 'searchUpdate.pos' );
unlink( 'searchUpdate.pos' );
} else {
$start = @file_get_contents( $posFile );
if ( !$start ) {
$start = wfTimestamp( TS_MW, time() - 86400 );
}
}
$lockTime = $this->getOption( 'l', 20 );
$this->doUpdateSearchIndex( $start, $end, $lockTime );
$file = fopen( $posFile, 'w' );
fwrite( $file, $end );
fclose( $file );
}
private function doUpdateSearchIndex( $start, $end, $maxLockTime ) {
global $wgDisableSearchUpdate;
$wgDisableSearchUpdate = false;
$dbw = wfGetDB( DB_MASTER );
$recentchanges = $dbw->tableName( 'recentchanges' );
$this->output( "Updating searchindex between $start and $end\n" );
# Select entries from recentchanges which are on top and between the specified times
$start = $dbw->timestamp( $start );
$end = $dbw->timestamp( $end );
$page = $dbw->tableName( 'page' );
$sql = "SELECT rc_cur_id,rc_type,rc_moved_to_ns,rc_moved_to_title FROM $recentchanges
JOIN $page ON rc_cur_id=page_id AND rc_this_oldid=page_latest
WHERE rc_timestamp BETWEEN '$start' AND '$end'
";
$res = $dbw->query( $sql, __METHOD__ );
# Lock searchindex
if ( $maxLockTime ) {
$this->output( " --- Waiting for lock ---" );
$this->lockSearchindex( $dbw );
$lockTime = time();
$this->output( "\n" );
}
# Loop through the results and do a search update
foreach ( $res as $row ) {
# Allow reads to be processed
if ( $maxLockTime && time() > $lockTime + $maxLockTime ) {
$this->output( " --- Relocking ---" );
$this->relockSearchindex( $dbw );
$lockTime = time();
$this->output( "\n" );
}
if ( $row->rc_type == RC_LOG ) {
continue;
} elseif ( $row->rc_type == RC_MOVE || $row->rc_type == RC_MOVE_OVER_REDIRECT ) {
# Rename searchindex entry
$titleObj = Title::makeTitle( $row->rc_moved_to_ns, $row->rc_moved_to_title );
$title = $titleObj->getPrefixedDBkey();
$this->output( "$title..." );
$u = new SearchUpdate( $row->rc_cur_id, $title, false );
$this->output( "\n" );
} else {
// Get current revision
$rev = Revision::loadFromPageId( $dbw, $row->rc_cur_id );
if( $rev ) {
$titleObj = $rev->getTitle();
$title = $titleObj->getPrefixedDBkey();
$this->output( $title );
# Update searchindex
$u = new SearchUpdate( $row->rc_cur_id, $titleObj->getText(), $rev->getText() );
$u->doUpdate();
$this->output( "\n" );
}
}
}
# Unlock searchindex
if ( $maxLockTime ) {
$this->output( " --- Unlocking --" );
$this->unlockSearchindex( $dbw );
$this->output( "\n" );
}
$this->output( "Done\n" );
}
/**
* Lock the search index
* @param &$db Database object
*/
private function lockSearchindex( &$db ) {
$write = array( 'searchindex' );
$read = array( 'page', 'revision', 'text', 'interwiki' );
$db->lockTables( $read, $write, 'updateSearchIndex.php ' . __METHOD__ );
}
/**
* Unlock the tables
* @param &$db Database object
*/
private function unlockSearchindex( &$db ) {
$db->unlockTables( 'updateSearchIndex.php ' . __METHOD__ );
}
/**
* Unlock and lock again
* Since the lock is low-priority, queued reads will be able to complete
* @param &$db Database object
*/
private function relockSearchindex( &$db ) {
$this->unlockSearchindex( $db );
$this->lockSearchindex( $db );
}
}
$maintClass = "UpdateSearchIndex";
require_once( DO_MAINTENANCE );
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