34c9bca6a8
Allows update.php to be run when $wgAllowSchemaUpdates = false. This is useful for non-WMF environments where strict DB permissions allow database updates (which update.php performs), but no schema changes (such as adding or dropping tables or indices which update.php also performs). It does this by adding the --schema and --noschema flags. Without either of these flags, update.php will perform exactly as before. With --noschema, all changes to the table structure or table additions are skipped. Only data changes are made. With --schema is used, no schema changes are made to the database, but the schema changes are saved to a separate SQL file that can be run. Change-Id: I96b4cfd4c02e9cbf46cc6a0499b87fb3b89020a0
107 lines
3.3 KiB
PHP
107 lines
3.3 KiB
PHP
<?php
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/**
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* Populates the rev_len field for old revisions created before MW 1.10.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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* @ingroup Maintenance
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*/
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require_once( __DIR__ . '/Maintenance.php' );
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/**
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* Maintenance script that populates the rev_len field for old revisions
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* created before MW 1.10.
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*
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* @ingroup Maintenance
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*/
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class PopulateRevisionLength extends LoggedUpdateMaintenance {
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public function __construct() {
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parent::__construct();
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$this->mDescription = "Populates the rev_len field";
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$this->setBatchSize( 200 );
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}
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protected function getUpdateKey() {
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return 'populate rev_len';
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}
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protected function updateSkippedMessage() {
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return 'rev_len column of revision table already populated.';
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}
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public function doDBUpdates() {
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$db = $this->getDB( DB_MASTER );
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if ( !$db->tableExists( 'revision' ) ) {
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$this->error( "revision table does not exist", true );
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} else if ( !$db->fieldExists( 'revision', 'rev_sha1', __METHOD__ ) ) {
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$this->output( "rev_sha1 column does not exist\n\n", true );
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return false;
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}
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$this->output( "Populating rev_len column\n" );
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$start = $db->selectField( 'revision', 'MIN(rev_id)', false, __METHOD__ );
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$end = $db->selectField( 'revision', 'MAX(rev_id)', false, __METHOD__ );
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if ( !$start || !$end ) {
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$this->output( "...revision table seems to be empty.\n" );
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return true;
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}
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# Do remaining chunks
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$blockStart = intval( $start );
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$blockEnd = intval( $start ) + $this->mBatchSize - 1;
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$count = 0;
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$missing = 0;
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while ( $blockStart <= $end ) {
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$this->output( "...doing rev_id from $blockStart to $blockEnd\n" );
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$res = $db->select( 'revision',
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Revision::selectFields(),
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array( "rev_id >= $blockStart",
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"rev_id <= $blockEnd",
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"rev_len IS NULL" ),
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__METHOD__ );
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# Go through and update rev_len from these rows.
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foreach ( $res as $row ) {
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$rev = new Revision( $row );
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$content = $rev->getContent();
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if ( !$content ) {
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# This should not happen, but sometimes does (bug 20757)
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$this->output( "Content of revision {$row->rev_id} unavailable!\n" );
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$missing++;
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}
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else {
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# Update the row...
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$db->update( 'revision',
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array( 'rev_len' => $content->getSize() ),
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array( 'rev_id' => $row->rev_id ),
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__METHOD__ );
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$count++;
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}
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}
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$blockStart += $this->mBatchSize;
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$blockEnd += $this->mBatchSize;
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wfWaitForSlaves();
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}
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$this->output( "rev_len population complete ... {$count} rows changed ({$missing} missing)\n" );
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return true;
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}
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}
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$maintClass = "PopulateRevisionLength";
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require_once( RUN_MAINTENANCE_IF_MAIN );
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