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-rw-r--r--maintenance/sqlite.php113
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+<?php
+/**
+ * Performs some operations specific to SQLite database backend
+ *
+ * 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 SqliteMaintenance extends Maintenance {
+ public function __construct() {
+ parent::__construct();
+ $this->mDescription = "Performs some operations specific to SQLite database backend";
+ $this->addOption( 'vacuum', 'Clean up database by removing deleted pages. Decreases database file size' );
+ $this->addOption( 'integrity', 'Check database for integrity' );
+ $this->addOption( 'backup-to', 'Backup database to the given file', false, true );
+ }
+
+ /**
+ * While we use database connection, this simple lie prevents useless --dbpass and
+ * --dbuser options from appearing in help message for this script.
+ */
+ public function getDbType() {
+ return Maintenance::DB_NONE;
+ }
+
+ public function execute() {
+ global $wgDBtype;
+
+ if ( $wgDBtype != 'sqlite' ) {
+ $this->error( "This maintenance script requires a SQLite database.\n" );
+ return;
+ }
+
+ $this->db = wfGetDB( DB_MASTER );
+
+ if ( $this->hasOption( 'vacuum' ) ) {
+ $this->vacuum();
+ }
+
+ if ( $this->hasOption( 'integrity' ) ) {
+ $this->integrityCheck();
+ }
+
+ if ( $this->hasOption( 'backup-to' ) ) {
+ $this->backup( $this->getOption( 'backup-to' ) );
+ }
+ }
+
+ private function vacuum() {
+ $prevSize = filesize( $this->db->mDatabaseFile );
+ if ( $prevSize == 0 ) {
+ $this->error( "Can't vacuum an empty database.\n", true );
+ }
+
+ $this->output( 'VACUUM: ' );
+ if ( $this->db->query( 'VACUUM' ) ) {
+ clearstatcache();
+ $newSize = filesize( $this->db->mDatabaseFile );
+ $this->output( sprintf( "Database size was %d, now %d (%.1f%% reduction).\n",
+ $prevSize, $newSize, ( $prevSize - $newSize) * 100.0 / $prevSize ) );
+ } else {
+ $this->output( 'Error\n' );
+ }
+ }
+
+ private function integrityCheck() {
+ $this->output( "Performing database integrity checks:\n" );
+ $res = $this->db->query( 'PRAGMA integrity_check' );
+
+ if ( !$res || $res->numRows() == 0 ) {
+ $this->error( "Error: integrity check query returned nothing.\n" );
+ return;
+ }
+
+ foreach ( $res as $row ) {
+ $this->output( $row->integrity_check );
+ }
+ }
+
+ private function backup( $fileName ) {
+ $this->output( "Backing up database:\n Locking..." );
+ $this->db->query( 'BEGIN IMMEDIATE TRANSACTION', __METHOD__ );
+ $ourFile = $this->db->mDatabaseFile;
+ $this->output( " Copying database file $ourFile to $fileName... " );
+ wfSuppressWarnings( false );
+ if ( !copy( $ourFile, $fileName ) ) {
+ $err = error_get_last();
+ $this->error( " {$err['message']}" );
+ }
+ wfSuppressWarnings( true );
+ $this->output( " Releasing lock...\n" );
+ $this->db->query( 'COMMIT TRANSACTION', __METHOD__ );
+ }
+}
+
+$maintClass = "SqliteMaintenance";
+require_once( DO_MAINTENANCE ); \ No newline at end of file