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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\HttpFoundation\Session\Storage\Handler;
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/**
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* Migrating session handler for migrating from one handler to another. It reads
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* from the current handler and writes both the current and new ones.
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*
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* It ignores errors from the new handler.
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*
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* @author Ross Motley <ross.motley@amara.com>
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* @author Oliver Radwell <oliver.radwell@amara.com>
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*/
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class MigratingSessionHandler implements \SessionHandlerInterface, \SessionUpdateTimestampHandlerInterface
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{
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/**
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* @var \SessionHandlerInterface&\SessionUpdateTimestampHandlerInterface
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*/
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private \SessionHandlerInterface $currentHandler;
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/**
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* @var \SessionHandlerInterface&\SessionUpdateTimestampHandlerInterface
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*/
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private \SessionHandlerInterface $writeOnlyHandler;
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public function __construct(\SessionHandlerInterface $currentHandler, \SessionHandlerInterface $writeOnlyHandler)
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{
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if (!$currentHandler instanceof \SessionUpdateTimestampHandlerInterface) {
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$currentHandler = new StrictSessionHandler($currentHandler);
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}
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if (!$writeOnlyHandler instanceof \SessionUpdateTimestampHandlerInterface) {
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$writeOnlyHandler = new StrictSessionHandler($writeOnlyHandler);
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}
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$this->currentHandler = $currentHandler;
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$this->writeOnlyHandler = $writeOnlyHandler;
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}
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public function close(): bool
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{
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$result = $this->currentHandler->close();
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$this->writeOnlyHandler->close();
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return $result;
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}
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public function destroy(string $sessionId): bool
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{
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$result = $this->currentHandler->destroy($sessionId);
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$this->writeOnlyHandler->destroy($sessionId);
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return $result;
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}
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public function gc(int $maxlifetime): int|false
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{
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$result = $this->currentHandler->gc($maxlifetime);
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$this->writeOnlyHandler->gc($maxlifetime);
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return $result;
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}
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public function open(string $savePath, string $sessionName): bool
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{
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$result = $this->currentHandler->open($savePath, $sessionName);
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$this->writeOnlyHandler->open($savePath, $sessionName);
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return $result;
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}
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public function read(string $sessionId): string
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{
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// No reading from new handler until switch-over
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return $this->currentHandler->read($sessionId);
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}
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public function write(string $sessionId, string $sessionData): bool
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{
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$result = $this->currentHandler->write($sessionId, $sessionData);
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$this->writeOnlyHandler->write($sessionId, $sessionData);
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return $result;
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}
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public function validateId(string $sessionId): bool
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{
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// No reading from new handler until switch-over
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return $this->currentHandler->validateId($sessionId);
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}
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public function updateTimestamp(string $sessionId, string $sessionData): bool
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{
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$result = $this->currentHandler->updateTimestamp($sessionId, $sessionData);
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$this->writeOnlyHandler->updateTimestamp($sessionId, $sessionData);
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return $result;
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}
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}
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