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ForeignDBFile.php
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ForeignDBFile.php
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<?php
/**
* 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
*/
use MediaWiki\Language\Language;
use MediaWiki\MediaWikiServices;
use MediaWiki\Status\Status;
use MediaWiki\Title\Title;
use MediaWiki\User\UserIdentity;
use Wikimedia\ObjectCache\WANObjectCache;
use Wikimedia\Rdbms\DBUnexpectedError;
/**
* Foreign file from a reachable database in the same wiki farm.
*
* @ingroup FileAbstraction
*/
class ForeignDBFile extends LocalFile {
/**
* @return ForeignDBRepo|false
*/
public function getRepo() {
return $this->repo;
}
/**
* @param string $srcPath
* @param int $flags
* @param array $options
* @return Status
*/
public function publish( $srcPath, $flags = 0, array $options = [] ) {
$this->readOnlyError();
}
/**
* @param int[] $versions
* @param bool $unsuppress
* @return Status
*/
public function restore( $versions = [], $unsuppress = false ) {
$this->readOnlyError();
}
/**
* @param string $reason
* @param UserIdentity $user
* @param bool $suppress
* @return Status
*/
public function deleteFile( $reason, UserIdentity $user, $suppress = false ) {
$this->readOnlyError();
}
/**
* @param Title $target
* @return Status
*/
public function move( $target ) {
$this->readOnlyError();
}
/**
* @return string
*/
public function getDescriptionUrl() {
// Restore remote behavior
return File::getDescriptionUrl();
}
/**
* @param Language|null $lang Optional language to fetch description in.
* @return string|false
*/
public function getDescriptionText( ?Language $lang = null ) {
global $wgLang;
if ( !$this->repo->fetchDescription ) {
return false;
}
$lang ??= $wgLang;
$renderUrl = $this->repo->getDescriptionRenderUrl( $this->getName(), $lang->getCode() );
if ( !$renderUrl ) {
return false;
}
$touched = $this->repo->getReplicaDB()->newSelectQueryBuilder()
->select( 'page_touched' )
->from( 'page' )
->where( [ 'page_namespace' => NS_FILE, 'page_title' => $this->title->getDBkey() ] )
->caller( __METHOD__ )->fetchField();
if ( $touched === false ) {
return false; // no description page
}
$cache = MediaWikiServices::getInstance()->getMainWANObjectCache();
$fname = __METHOD__;
return $cache->getWithSetCallback(
$this->repo->getLocalCacheKey(
'file-foreign-description',
$lang->getCode(),
md5( $this->getName() ),
$touched
),
$this->repo->descriptionCacheExpiry ?: $cache::TTL_UNCACHEABLE,
static function ( $oldValue, &$ttl, array &$setOpts ) use ( $renderUrl, $fname ) {
wfDebug( "Fetching shared description from $renderUrl" );
$res = MediaWikiServices::getInstance()->getHttpRequestFactory()->
get( $renderUrl, [], $fname );
if ( !$res ) {
$ttl = WANObjectCache::TTL_UNCACHEABLE;
}
return $res;
}
);
}
/**
* Get short description URL for a file based on the page ID.
*
* @return string|null
* @throws DBUnexpectedError
* @since 1.27
*/
public function getDescriptionShortUrl() {
$dbr = $this->repo->getReplicaDB();
$pageId = $dbr->newSelectQueryBuilder()
->select( 'page_id' )
->from( 'page' )
->where( [ 'page_namespace' => NS_FILE, 'page_title' => $this->title->getDBkey() ] )
->caller( __METHOD__ )->fetchField();
if ( $pageId !== false ) {
$url = $this->repo->makeUrl( [ 'curid' => $pageId ] );
if ( $url !== false ) {
return $url;
}
}
return null;
}
}

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text/x-php
Expires
Sat, May 16, 13:03 (1 d, 4 h)
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local-disk
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Storage Handle
82/94/dbf7f73538414cb31f0ecfbcc06c
Default Alt Text
ForeignDBFile.php (4 KB)

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