<?php
/**
- * Rebuild search index table from scratch. This takes several
+ * Rebuild search index table from scratch. This may take several
* hours, depending on the database size and server configuration.
*
- * This is only for MySQL (see bug 9905).
* Postgres is trigger-based and should never need rebuilding.
*
+ * 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
+ *
* @file
+ * @ingroup Maintenance
* @todo document
+ */
+
+require_once __DIR__ . '/Maintenance.php';
+
+use Wikimedia\Rdbms\IMaintainableDatabase;
+use Wikimedia\Rdbms\DatabaseSqlite;
+
+/**
+ * Maintenance script that rebuilds search index table from scratch.
+ *
* @ingroup Maintenance
*/
+class RebuildTextIndex extends Maintenance {
+ const RTI_CHUNK_SIZE = 500;
-/** */
-require_once( "commandLine.inc" );
-require_once( "rebuildtextindex.inc" );
+ /**
+ * @var IMaintainableDatabase
+ */
+ private $db;
-$database = wfGetDB( DB_MASTER );
-if( !$database instanceof DatabaseMysql ) {
- print "This script is only for MySQL.\n";
- exit();
-}
+ public function __construct() {
+ parent::__construct();
+ $this->addDescription( 'Rebuild search index table from scratch' );
+ }
-$wgTitle = Title::newFromText( "Rebuild text index script" );
+ public function getDbType() {
+ return Maintenance::DB_ADMIN;
+ }
-dropTextIndex( $database );
-rebuildTextIndex( $database );
-createTextIndex( $database );
+ public function execute() {
+ // Shouldn't be needed for Postgres
+ $this->db = $this->getDB( DB_MASTER );
+ if ( $this->db->getType() == 'postgres' ) {
+ $this->error( "This script is not needed when using Postgres.\n", true );
+ }
-print "Done.\n";
-exit();
+ if ( $this->db->getType() == 'sqlite' ) {
+ if ( !DatabaseSqlite::getFulltextSearchModule() ) {
+ $this->error( "Your version of SQLite module for PHP doesn't "
+ . "support full-text search (FTS3).\n", true );
+ }
+ if ( !$this->db->checkForEnabledSearch() ) {
+ $this->error( "Your database schema is not configured for "
+ . "full-text search support. Run update.php.\n", true );
+ }
+ }
+ if ( $this->db->getType() == 'mysql' ) {
+ $this->dropMysqlTextIndex();
+ $this->clearSearchIndex();
+ $this->populateSearchIndex();
+ $this->createMysqlTextIndex();
+ } else {
+ $this->clearSearchIndex();
+ $this->populateSearchIndex();
+ }
+
+ $this->output( "Done.\n" );
+ }
+
+ /**
+ * Populates the search index with content from all pages
+ */
+ protected function populateSearchIndex() {
+ $res = $this->db->select( 'page', 'MAX(page_id) AS count' );
+ $s = $this->db->fetchObject( $res );
+ $count = $s->count;
+ $this->output( "Rebuilding index fields for {$count} pages...\n" );
+ $n = 0;
+
+ $fields = array_merge(
+ Revision::selectPageFields(),
+ Revision::selectFields(),
+ Revision::selectTextFields()
+ );
+
+ while ( $n < $count ) {
+ if ( $n ) {
+ $this->output( $n . "\n" );
+ }
+ $end = $n + self::RTI_CHUNK_SIZE - 1;
+
+ $res = $this->db->select( [ 'page', 'revision', 'text' ], $fields,
+ [ "page_id BETWEEN $n AND $end", 'page_latest = rev_id', 'rev_text_id = old_id' ],
+ __METHOD__
+ );
+
+ foreach ( $res as $s ) {
+ $title = Title::makeTitle( $s->page_namespace, $s->page_title );
+ try {
+ $rev = new Revision( $s );
+ $content = $rev->getContent();
+
+ $u = new SearchUpdate( $s->page_id, $title, $content );
+ $u->doUpdate();
+ } catch ( MWContentSerializationException $ex ) {
+ $this->output( "Failed to deserialize content of revision {$s->rev_id} of page "
+ . "`" . $title->getPrefixedDBkey() . "`!\n" );
+ }
+ }
+ $n += self::RTI_CHUNK_SIZE;
+ }
+ }
+
+ /**
+ * (MySQL only) Drops fulltext index before populating the table.
+ */
+ private function dropMysqlTextIndex() {
+ $searchindex = $this->db->tableName( 'searchindex' );
+ if ( $this->db->indexExists( 'searchindex', 'si_title', __METHOD__ ) ) {
+ $this->output( "Dropping index...\n" );
+ $sql = "ALTER TABLE $searchindex DROP INDEX si_title, DROP INDEX si_text";
+ $this->db->query( $sql, __METHOD__ );
+ }
+ }
+
+ /**
+ * (MySQL only) Adds back fulltext index after populating the table.
+ */
+ private function createMysqlTextIndex() {
+ $searchindex = $this->db->tableName( 'searchindex' );
+ $this->output( "\nRebuild the index...\n" );
+ $sql = "ALTER TABLE $searchindex ADD FULLTEXT si_title (si_title), " .
+ "ADD FULLTEXT si_text (si_text)";
+ $this->db->query( $sql, __METHOD__ );
+ }
+
+ /**
+ * Deletes everything from search index.
+ */
+ private function clearSearchIndex() {
+ $this->output( 'Clearing searchindex table...' );
+ $this->db->delete( 'searchindex', '*', __METHOD__ );
+ $this->output( "Done\n" );
+ }
+}
+$maintClass = "RebuildTextIndex";
+require_once RUN_MAINTENANCE_IF_MAIN;
scripts.mit.edu / autoinstalls / mediawiki.git / blobdiff