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<?php |
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namespace Doctrine\Common\Cache; |
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use MongoBinData; |
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use MongoCollection; |
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use MongoCursorException; |
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use MongoDate; |
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use const E_USER_DEPRECATED; |
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use function serialize; |
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use function time; |
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use function trigger_error; |
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use function unserialize; |
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/** |
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* MongoDB cache provider. |
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* |
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* @internal Do not use - will be removed in 2.0. Use MongoDBCache instead |
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*/ |
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class LegacyMongoDBCache extends CacheProvider |
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{ |
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/** @var MongoCollection */ |
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private $collection; |
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/** @var bool */ |
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private $expirationIndexCreated = false; |
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/** |
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* This provider will default to the write concern and read preference |
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* options set on the MongoCollection instance (or inherited from MongoDB or |
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* MongoClient). Using an unacknowledged write concern (< 1) may make the |
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* return values of delete() and save() unreliable. Reading from secondaries |
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* may make contain() and fetch() unreliable. |
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* |
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* @see http://www.php.net/manual/en/mongo.readpreferences.php |
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* @see http://www.php.net/manual/en/mongo.writeconcerns.php |
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*/ |
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public function __construct(MongoCollection $collection) |
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{ |
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@trigger_error('Using the legacy MongoDB cache provider is deprecated and will be removed in 2.0', E_USER_DEPRECATED); |
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$this->collection = $collection; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function doFetch($id) |
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{ |
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$document = $this->collection->findOne(['_id' => $id], [MongoDBCache::DATA_FIELD, MongoDBCache::EXPIRATION_FIELD]); |
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if ($document === null) { |
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return false; |
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} |
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if ($this->isExpired($document)) { |
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$this->createExpirationIndex(); |
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$this->doDelete($id); |
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return false; |
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} |
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return unserialize($document[MongoDBCache::DATA_FIELD]->bin); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function doContains($id) |
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{ |
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$document = $this->collection->findOne(['_id' => $id], [MongoDBCache::EXPIRATION_FIELD]); |
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if ($document === null) { |
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return false; |
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} |
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if ($this->isExpired($document)) { |
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$this->createExpirationIndex(); |
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$this->doDelete($id); |
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return false; |
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} |
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return true; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function doSave($id, $data, $lifeTime = 0) |
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{ |
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try { |
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$result = $this->collection->update( |
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['_id' => $id], |
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[ |
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'$set' => [ |
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MongoDBCache::EXPIRATION_FIELD => ($lifeTime > 0 ? new MongoDate(time() + $lifeTime) : null), |
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MongoDBCache::DATA_FIELD => new MongoBinData(serialize($data), MongoBinData::BYTE_ARRAY), |
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], |
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], |
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['upsert' => true, 'multiple' => false] |
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); |
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1 |
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} catch (MongoCursorException $e) { |
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return false; |
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} |
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return ($result['ok'] ?? 1) == 1; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function doDelete($id) |
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{ |
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$result = $this->collection->remove(['_id' => $id]); |
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return ($result['ok'] ?? 1) == 1; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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2 |
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protected function doFlush() |
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{ |
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// Use remove() in lieu of drop() to maintain any collection indexes |
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$result = $this->collection->remove(); |
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return ($result['ok'] ?? 1) == 1; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function doGetStats() |
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{ |
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$serverStatus = $this->collection->db->command([ |
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'serverStatus' => 1, |
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'locks' => 0, |
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'metrics' => 0, |
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'recordStats' => 0, |
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'repl' => 0, |
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]); |
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$collStats = $this->collection->db->command(['collStats' => 1]); |
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return [ |
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1 |
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Cache::STATS_HITS => null, |
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Cache::STATS_MISSES => null, |
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Cache::STATS_UPTIME => $serverStatus['uptime'] ?? null, |
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1 |
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Cache::STATS_MEMORY_USAGE => $collStats['size'] ?? null, |
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Cache::STATS_MEMORY_AVAILABLE => null, |
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]; |
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} |
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/** |
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* Check if the document is expired. |
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* |
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* @param array $document |
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*/ |
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private function isExpired(array $document) : bool |
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{ |
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return isset($document[MongoDBCache::EXPIRATION_FIELD]) && |
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$document[MongoDBCache::EXPIRATION_FIELD] instanceof MongoDate && |
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$document[MongoDBCache::EXPIRATION_FIELD]->sec < time(); |
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} |
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1 |
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private function createExpirationIndex() : void |
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{ |
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1 |
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if ($this->expirationIndexCreated) { |
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return; |
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} |
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$this->expirationIndexCreated = true; |
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$this->collection->createIndex([MongoDBCache::EXPIRATION_FIELD => 1], ['background' => true, 'expireAfterSeconds' => 0]); |
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} |
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} |
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doctrine /
cache
