<?php
+/**
+ * Script to convert history stubs that point to an external row to direct
+ * external pointers.
+ *
+ * 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 ExternalStorage
+ */
define( 'REPORTING_INTERVAL', 100 );
if ( !defined( 'MEDIAWIKI' ) ) {
$optionsWithArgs = array( 'm' );
- require_once( '../commandLine.inc' );
- require_once( 'includes/ExternalStoreDB.php' );
+ require_once( dirname( __FILE__ ) . '/../commandLine.inc' );
resolveStubs();
}
function resolveStubs() {
$fname = 'resolveStubs';
- print "Retrieving stub rows...\n";
- $dbr =& wfGetDB( DB_SLAVE );
+ $dbr = wfGetDB( DB_SLAVE );
$maxID = $dbr->selectField( 'text', 'MAX(old_id)', false, $fname );
- $stubs = array();
- $flagsArray = array();
+ $blockSize = 10000;
+ $numBlocks = intval( $maxID / $blockSize ) + 1;
- # Do it in 100 blocks
- for ( $b = 0; $b < 100; $b++ ) {
- print "$b%\r";
- $start = intval($maxID / 100) * $b + 1;
- $end = intval($maxID / 100) * ($b + 1);
+ for ( $b = 0; $b < $numBlocks; $b++ ) {
+ wfWaitForSlaves();
+
+ printf( "%5.2f%%\n", $b / $numBlocks * 100 );
+ $start = intval( $maxID / $numBlocks ) * $b + 1;
+ $end = intval( $maxID / $numBlocks ) * ( $b + 1 );
$res = $dbr->select( 'text', array( 'old_id', 'old_text', 'old_flags' ),
- "old_id>=$start AND old_id<=$end AND old_flags like '%object%' ".
- "AND old_text LIKE 'O:15:\"historyblobstub\"%'", $fname );
- while ( $row = $dbr->fetchObject( $res ) ) {
- $stubs[$row->old_id] = $row->old_text;
- $flagsArray[$row->old_id] = $row->old_flags;
+ "old_id>=$start AND old_id<=$end " .
+ "AND old_flags LIKE '%object%' AND old_flags NOT LIKE '%external%' " .
+ 'AND LOWER(CONVERT(LEFT(old_text,22) USING latin1)) = \'o:15:"historyblobstub"\'',
+ $fname );
+ foreach ( $res as $row ) {
+ resolveStub( $row->old_id, $row->old_text, $row->old_flags );
}
- $dbr->freeResult( $res );
}
print "100%\n";
+}
- print "\nConverting " . count( $stubs ) . " rows ...\n";
-
- # Get master database, no transactions
- $dbw =& wfGetDB( DB_MASTER );
- $dbw->clearFlag( DBO_TRX );
- $dbw->immediateCommit();
+/**
+ * Resolve a history stub
+ */
+function resolveStub( $id, $stubText, $flags ) {
+ $fname = 'resolveStub';
- $i = 0;
- foreach( $stubs as $id => $stub ) {
- if ( !(++$i % REPORTING_INTERVAL) ) {
- print "$i\n";
- wfWaitForSlaves( 5 );
- }
+ $stub = unserialize( $stubText );
+ $flags = explode( ',', $flags );
- $stub = unserialize( $stub );
- if ( get_class( $stub ) !== 'historyblobstub' ) {
- print "Error, invalid stub object\n";
- return;
- }
+ $dbr = wfGetDB( DB_SLAVE );
+ $dbw = wfGetDB( DB_MASTER );
- # Get the (maybe) external row
- $externalRow = $dbr->selectRow( 'text', array( 'old_text' ),
- array( 'old_id' => $stub->mOldId, "old_flags LIKE '%external%'" ),
- $fname
- );
+ if ( strtolower( get_class( $stub ) ) !== 'historyblobstub' ) {
+ print "Error found object of class " . get_class( $stub ) . ", expecting historyblobstub\n";
+ return;
+ }
- if ( !$externalRow ) {
- # Object wasn't external
- continue;
- }
+ # Get the (maybe) external row
+ $externalRow = $dbr->selectRow( 'text', array( 'old_text' ),
+ array( 'old_id' => $stub->mOldId, 'old_flags' . $dbr->buildLike( $dbr->anyString(), 'external', $dbr->anyString() ) ),
+ $fname
+ );
- # Preserve the legacy encoding flag, but switch from object to external
- $flags = explode( ',', $flagsArray[$id] );
- if ( in_array( 'utf-8', $flags ) ) {
- $newFlags = 'external,utf-8';
- } else {
- $newFlags = 'external';
- }
+ if ( !$externalRow ) {
+ # Object wasn't external
+ return;
+ }
- # Update the row
- $dbw->update( 'text',
- array( /* SET */
- 'old_flags' => $newFlags,
- 'old_text' => $externalRow->old_text . '/' . $stub->mHash
- ),
- array( /* WHERE */
- 'old_id' => $id
- ), $fname
- );
+ # Preserve the legacy encoding flag, but switch from object to external
+ if ( in_array( 'utf-8', $flags ) ) {
+ $newFlags = 'external,utf-8';
+ } else {
+ $newFlags = 'external';
}
+
+ # Update the row
+ # print "oldid=$id\n";
+ $dbw->update( 'text',
+ array( /* SET */
+ 'old_flags' => $newFlags,
+ 'old_text' => $externalRow->old_text . '/' . $stub->mHash
+ ),
+ array( /* WHERE */
+ 'old_id' => $id
+ ), $fname
+ );
}
-?>
dépôts / lhc / web / wiklou.git / blobdiff