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<?php
/**
* Optional upgrade script to populate the img_sha1 field
*
* 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
*/
require_once __DIR__ . '/Maintenance.php';
/**
* Maintenance script to populate the img_sha1 field.
*
* @ingroup Maintenance
*/
class PopulateImageSha1 extends LoggedUpdateMaintenance {
public function __construct() {
parent::__construct();
$this->addDescription( 'Populate the img_sha1 field' );
$this->addOption( 'force', "Recalculate sha1 for rows that already have a value" );
$this->addOption( 'multiversiononly', "Calculate only for files with several versions" );
$this->addOption( 'method', "Use 'pipe' to pipe to mysql command line,\n" .
"\t\tdefault uses Database class", false, true );
$this->addOption(
'file',
'Fix for a specific file, without File: namespace prefixed',
false,
true
);
}
protected function getUpdateKey() {
return 'populate img_sha1';
}
protected function updateSkippedMessage() {
return 'img_sha1 column of image table already populated.';
}
public function execute() {
if ( $this->getOption( 'file' ) || $this->hasOption( 'multiversiononly' ) ) {
$this->doDBUpdates(); // skip update log checks/saves
} else {
parent::execute();
}
}
public function doDBUpdates() {
$method = $this->getOption( 'method', 'normal' );
$file = $this->getOption( 'file', '' );
$force = $this->getOption( 'force' );
$isRegen = ( $force || $file != '' ); // forced recalculation?
$t = -microtime( true );
$dbw = $this->getDB( DB_MASTER );
if ( $file != '' ) {
$res = $dbw->select(
'image',
[ 'img_name' ],
[ 'img_name' => $file ],
__METHOD__
);
if ( !$res ) {
$this->error( "No such file: $file", true );
return false;
}
$this->output( "Populating img_sha1 field for specified files\n" );
} else {
if ( $this->hasOption( 'multiversiononly' ) ) {
$conds = [];
$this->output( "Populating and recalculating img_sha1 field for versioned files\n" );
} elseif ( $force ) {
$conds = [];
$this->output( "Populating and recalculating img_sha1 field\n" );
} else {
$conds = [ 'img_sha1' => '' ];
$this->output( "Populating img_sha1 field\n" );
}
if ( $this->hasOption( 'multiversiononly' ) ) {
$res = $dbw->select( 'oldimage',
[ 'img_name' => 'DISTINCT(oi_name)' ], $conds, __METHOD__ );
} else {
$res = $dbw->select( 'image', [ 'img_name' ], $conds, __METHOD__ );
}
}
$imageTable = $dbw->tableName( 'image' );
$oldImageTable = $dbw->tableName( 'oldimage' );
if ( $method == 'pipe' ) {
// Opening a pipe allows the SHA-1 operation to be done in parallel
// with the database write operation, because the writes are queued
// in the pipe buffer. This can improve performance by up to a
// factor of 2.
global $wgDBuser, $wgDBserver, $wgDBpassword, $wgDBname;
$cmd = 'mysql -u' . wfEscapeShellArg( $wgDBuser ) .
' -h' . wfEscapeShellArg( $wgDBserver ) .
' -p' . wfEscapeShellArg( $wgDBpassword, $wgDBname );
$this->output( "Using pipe method\n" );
$pipe = popen( $cmd, 'w' );
}
$numRows = $res->numRows();
$i = 0;
foreach ( $res as $row ) {
if ( $i % $this->mBatchSize == 0 ) {
$this->output( sprintf(
"Done %d of %d, %5.3f%% \r", $i, $numRows, $i / $numRows * 100 ) );
wfWaitForSlaves();
}
$file = wfLocalFile( $row->img_name );
if ( !$file ) {
continue;
}
// Upgrade the current file version...
$sha1 = $file->getRepo()->getFileSha1( $file->getPath() );
if ( strval( $sha1 ) !== '' ) { // file on disk and hashed properly
if ( $isRegen && $file->getSha1() !== $sha1 ) {
// The population was probably done already. If the old SHA1
// does not match, then both fix the SHA1 and the metadata.
$file->upgradeRow();
} else {
$sql = "UPDATE $imageTable SET img_sha1=" . $dbw->addQuotes( $sha1 ) .
" WHERE img_name=" . $dbw->addQuotes( $file->getName() );
if ( $method == 'pipe' ) {
fwrite( $pipe, "$sql;\n" );
} else {
$dbw->query( $sql, __METHOD__ );
}
}
}
// Upgrade the old file versions...
foreach ( $file->getHistory() as $oldFile ) {
$sha1 = $oldFile->getRepo()->getFileSha1( $oldFile->getPath() );
if ( strval( $sha1 ) !== '' ) { // file on disk and hashed properly
if ( $isRegen && $oldFile->getSha1() !== $sha1 ) {
// The population was probably done already. If the old SHA1
// does not match, then both fix the SHA1 and the metadata.
$oldFile->upgradeRow();
} else {
$sql = "UPDATE $oldImageTable SET oi_sha1=" . $dbw->addQuotes( $sha1 ) .
" WHERE (oi_name=" . $dbw->addQuotes( $oldFile->getName() ) . " AND" .
" oi_archive_name=" . $dbw->addQuotes( $oldFile->getArchiveName() ) . ")";
if ( $method == 'pipe' ) {
fwrite( $pipe, "$sql;\n" );
} else {
$dbw->query( $sql, __METHOD__ );
}
}
}
}
$i++;
}
if ( $method == 'pipe' ) {
fflush( $pipe );
pclose( $pipe );
}
$t += microtime( true );
$this->output( sprintf( "\nDone %d files in %.1f seconds\n", $numRows, $t ) );
return !$file; // we only updated *some* files, don't log
}
}
$maintClass = "PopulateImageSha1";
require_once RUN_MAINTENANCE_IF_MAIN;