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SingleBackendSessionStore.php
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SingleBackendSessionStore.php
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<?php
/**
* @license GPL-2.0-or-later
* @file
* @ingroup Session
*/
namespace MediaWiki\Session;
use MediaWiki\WikiMap\WikiMap;
use Psr\Log\LoggerAwareTrait;
use Psr\Log\LoggerInterface;
use Wikimedia\ObjectCache\BagOStuff;
use Wikimedia\ObjectCache\CachedBagOStuff;
use Wikimedia\Stats\StatsFactory;
/**
* An implementation of a session store with a single backend for storing
* anonymous and authenticated sessions. Authenticated and anonymous sessions
* are treated the same in terms of their TTL.
*
* @ingroup Session
* @since 1.45
*/
class SingleBackendSessionStore implements SessionStore {
use LoggerAwareTrait;
private CachedBagOStuff $store;
private StatsFactory $statsFactory;
public function __construct(
BagOStuff $store,
LoggerInterface $logger,
StatsFactory $statsFactory
) {
$this->setLogger( $logger );
$this->logger->debug( 'SessionManager using store ' . get_class( $store ) );
$this->store = $store instanceof CachedBagOStuff ? $store : new CachedBagOStuff( $store );
$this->statsFactory = $statsFactory;
}
/** @inheritDoc */
public function setLogger( LoggerInterface $logger ): void {
$this->logger = $logger;
}
/**
* Get session store data for a given key. This will look up the
* active store during the request and use that to fetch the data.
*
* @param SessionInfo $info
*
* @return mixed
*/
public function get( SessionInfo $info ) {
$key = $this->makeKey( 'MWSession', $info->getId() );
$value = $this->store->get( $key );
$stats = $this->statsFactory->getCounter( 'sessionstore_get_total' );
if ( !$this->store->wasLastGetCached() ) {
$stats->setLabel( 'type', 'singlebackend' )
->setLabel( 'wiki', WikiMap::getCurrentWikiId() )
->increment();
}
return $value;
}
/**
* Set session store data for the corresponding key to the active
* store during the request.
*
* @param SessionInfo $info
* @param mixed $value
* @param int $exptime
* @param int $flags
*/
public function set( SessionInfo $info, $value, $exptime = 0, $flags = 0 ): void {
$key = $this->makeKey( 'MWSession', $info->getId() );
$this->store->set( $key, $value, $exptime, $flags );
if ( ( $flags & BagOStuff::WRITE_CACHE_ONLY ) === 0 ) {
$this->statsFactory->getCounter( 'sessionstore_set_total' )
->setLabel( 'type', 'singlebackend' )
->setLabel( 'wiki', WikiMap::getCurrentWikiId() )
->increment();
}
}
/**
* Deletes session data from the session store for the provided key.
*
* @param SessionInfo $info
*/
public function delete( SessionInfo $info ): void {
$key = $this->makeKey( 'MWSession', $info->getId() );
$this->store->delete( $key );
$this->statsFactory->getCounter( 'sessionstore_delete_total' )
->setLabel( 'type', 'singlebackend' )
->setLabel( 'wiki', WikiMap::getCurrentWikiId() )
->increment();
}
/**
* @inheritDoc
*/
public function shutdown(): void {
// https://www.php.net/manual/en/session.configuration.php#ini.session.gc-divisor
// Doing this here because of how Session::gc() works in PHP session handler. The
// only difference here is that this is done at the end of the request rather than
// the beginning. But we want to preserve behavior for 1 in every 100 requests.
if ( random_int( 1, 100 ) === 1 ) {
$this->store->deleteObjectsExpiringBefore( wfTimestampNow() );
}
}
/**
* @param string $keygroup
* @param string|int $components
*
* @return string
*/
private function makeKey( string $keygroup, $components ): string {
return $this->store->makeKey( $keygroup, $components );
}
}

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text/x-php
Expires
Tue, Aug 18, 18:40 (3 w, 14 h ago)
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5b/74/ade524438955276e89ba12760531
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SingleBackendSessionStore.php (3 KB)

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