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MongoDbSessionHandler.php

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\HttpFoundation\Session\Storage\Handler;

use MongoDB\BSON\Binary;
use MongoDB\BSON\UTCDateTime;
use MongoDB\Client;
use MongoDB\Collection;

/**
 * Session handler using the mongodb/mongodb package and MongoDB driver extension.
 *
 * @author Markus Bachmann <markus.bachmann@bachi.biz>
 *
 * @see https://packagist.org/packages/mongodb/mongodb
 * @see https://php.net/mongodb
 */
class MongoDbSessionHandler extends AbstractSessionHandler
{
    private Client $mongo;
    private Collection $collection;
    private array $options;
    private int|\Closure|null $ttl;

/**
     * Constructor.
     *
     * List of available options:
     *  * database: The name of the database [required]
     *  * collection: The name of the collection [required]
     *  * id_field: The field name for storing the session id [default: _id]
     *  * data_field: The field name for storing the session data [default: data]
     *  * time_field: The field name for storing the timestamp [default: time]
     *  * expiry_field: The field name for storing the expiry-timestamp [default: expires_at]
     *  * ttl: The time to live in seconds.
     *
     * It is strongly recommended to put an index on the `expiry_field` for
     * garbage-collection. Alternatively it's possible to automatically expire
     * the sessions in the database as described below:
     *
     * A TTL collections can be used on MongoDB 2.2+ to cleanup expired sessions
     * automatically. Such an index can for example look like this:
     *
     *     db.<session-collection>.createIndex(
     *         { "<expiry-field>": 1 },
     *         { "expireAfterSeconds": 0 }
     *     )
     *
     * More details on: https://docs.mongodb.org/manual/tutorial/expire-data/
     *
     * If you use such an index, you can drop `gc_probability` to 0 since
     * no garbage-collection is required.
     *
     * @throws \InvalidArgumentException When "database" or "collection" not provided
     */
    public function __construct(Client $mongo, array $options)
    {
        if (!isset($options['database']) || !isset($options['collection'])) {
            throw new \InvalidArgumentException('You must provide the "database" and "collection" option for MongoDBSessionHandler.');
        }

$this->mongo = $mongo;

$this->options = array_merge([
            'id_field' => '_id',
            'data_field' => 'data',
            'time_field' => 'time',
            'expiry_field' => 'expires_at',
        ], $options);
        $this->ttl = $this->options['ttl'] ?? null;
    }

public function close(): bool
    {
        return true;
    }

protected function doDestroy(#[\SensitiveParameter] string $sessionId): bool
    {
        $this->getCollection()->deleteOne([
            $this->options['id_field'] => $sessionId,
        ]);

return true;
    }

public function gc(int $maxlifetime): int|false
    {
        return $this->getCollection()->deleteMany([
            $this->options['expiry_field'] => ['$lt' => new UTCDateTime()],
        ])->getDeletedCount();
    }

protected function doWrite(#[\SensitiveParameter] string $sessionId, string $data): bool
    {
        $ttl = ($this->ttl instanceof \Closure ? ($this->ttl)() : $this->ttl) ?? \ini_get('session.gc_maxlifetime');
        $expiry = new UTCDateTime((time() + (int) $ttl) * 1000);

$fields = [
            $this->options['time_field'] => new UTCDateTime(),
            $this->options['expiry_field'] => $expiry,
            $this->options['data_field'] => new Binary($data, Binary::TYPE_OLD_BINARY),
        ];

$this->getCollection()->updateOne(
            [$this->options['id_field'] => $sessionId],
            ['$set' => $fields],
            ['upsert' => true]
        );

return true;
    }

public function updateTimestamp(#[\SensitiveParameter] string $sessionId, string $data): bool
    {
        $ttl = ($this->ttl instanceof \Closure ? ($this->ttl)() : $this->ttl) ?? \ini_get('session.gc_maxlifetime');
        $expiry = new UTCDateTime((time() + (int) $ttl) * 1000);

$this->getCollection()->updateOne(
            [$this->options['id_field'] => $sessionId],
            ['$set' => [
                $this->options['time_field'] => new UTCDateTime(),
                $this->options['expiry_field'] => $expiry,
            ]]
        );

return true;
    }

protected function doRead(#[\SensitiveParameter] string $sessionId): string
    {
        $dbData = $this->getCollection()->findOne([
            $this->options['id_field'] => $sessionId,
            $this->options['expiry_field'] => ['$gte' => new UTCDateTime()],
        ]);

if (null === $dbData) {
            return '';
        }

return $dbData[$this->options['data_field']]->getData();
    }

private function getCollection(): Collection
    {
        return $this->collection ??= $this->mongo->selectCollection($this->options['database'], $this->options['collection']);
    }

protected function getMongo(): Client
    {
        return $this->mongo;
    }
}

Name	Type	Size	Permission	Last Modified	Actions
.	dir	-	0755	2024-03-21 07:29:17
..	dir	-	0755	2024-03-21 07:29:18
AbstractSessionHandler.php	text/x-php	4 KB	0644	2024-03-21 07:29:14
IdentityMarshaller.php	text/x-php	898 B	0644	2024-03-21 07:29:13
MarshallingSessionHandler.php	text/x-php	2.1 KB	0644	2024-03-21 07:29:14
MemcachedSessionHandler.php	text/x-php	3.21 KB	0644	2024-03-21 07:29:14
MigratingSessionHandler.php	text/x-php	3.24 KB	0644	2024-03-21 07:29:15
MongoDbSessionHandler.php	text/x-php	5.23 KB	0644	2024-03-21 07:29:15
NativeFileSessionHandler.php	text/x-php	1.88 KB	0644	2024-03-21 07:29:15
NullSessionHandler.php	text/x-php	1.22 KB	0644	2024-03-21 07:29:16
PdoSessionHandler.php	text/x-php	38.26 KB	0644	2024-03-21 07:29:17
RedisSessionHandler.php	text/x-php	2.92 KB	0644	2024-03-21 07:29:17
SessionHandlerFactory.php	text/x-php	4.32 KB	0644	2024-03-21 07:29:17
StrictSessionHandler.php	text/x-php	2.48 KB	0644	2024-03-21 07:29:17