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<?php |
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namespace DDDominio\EventSourcing\Snapshotting\Vendor; |
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use DDDominio\EventSourcing\EventStore\InitializableInterface; |
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use DDDominio\EventSourcing\Serialization\SerializerInterface; |
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use DDDominio\EventSourcing\Snapshotting\SnapshotInterface; |
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use DDDominio\EventSourcing\Snapshotting\SnapshotStoreInterface; |
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class MySqlJsonSnapshotStore implements SnapshotStoreInterface, InitializableInterface |
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{ |
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const SNAPSHOTS_TABLE = 'snapshots'; |
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/** |
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* @var \PDO |
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*/ |
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private $connection; |
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/** |
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* @var SerializerInterface |
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*/ |
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private $serializer; |
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/** |
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* @param \PDO $connection |
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* @param SerializerInterface $serializer |
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*/ |
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public function __construct( |
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\PDO $connection, |
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SerializerInterface $serializer |
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) { |
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$this->connection = $connection; |
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$this->serializer = $serializer; |
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} |
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/** |
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* @param SnapshotInterface $snapshot |
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*/ |
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public function addSnapshot($snapshot) |
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{ |
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$stmt = $this->connection |
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->prepare('INSERT INTO snapshots (aggregate_type, aggregate_id, type, version, snapshot) VALUES (:aggregateType, :aggregateId, :type, :version, :snapshot)'); |
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$stmt->bindValue(':aggregateType', $snapshot->aggregateClass()); |
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$stmt->bindValue(':aggregateId', $snapshot->aggregateId()); |
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$stmt->bindValue(':type', get_class($snapshot)); |
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$stmt->bindValue(':version', $snapshot->version()); |
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$stmt->bindValue(':snapshot', $this->serializer->serialize($snapshot)); |
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$stmt->execute(); |
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} |
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/** |
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* @param string $aggregateClass |
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* @param string $aggregateId |
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* @return SnapshotInterface|null |
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*/ |
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public function findLastSnapshot($aggregateClass, $aggregateId) |
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{ |
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$stmt = $this->connection |
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->prepare('SELECT type, snapshot FROM snapshots WHERE aggregate_type = :aggregateType AND aggregate_id = :aggregateId ORDER BY id DESC LIMIT 1'); |
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$stmt->bindValue(':aggregateType', $aggregateClass); |
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$stmt->bindValue(':aggregateId', $aggregateId); |
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$stmt->execute(); |
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$snapshot = $stmt->fetch(); |
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return $snapshot ? $this->serializer->deserialize($snapshot['snapshot'], $snapshot['type']) : null; |
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} |
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/** |
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* @param string $aggregateClass |
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* @param string $aggregateId |
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* @param int $version |
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* @return SnapshotInterface|null |
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*/ |
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public function findNearestSnapshotToVersion($aggregateClass, $aggregateId, $version) |
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{ |
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$stmt = $this->connection |
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->prepare('SELECT type, snapshot FROM snapshots WHERE aggregate_type = :aggregateType AND aggregate_id = :aggregateId AND version <= :version ORDER BY version DESC LIMIT 1'); |
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$stmt->bindValue(':aggregateType', $aggregateClass); |
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$stmt->bindValue(':aggregateId', $aggregateId); |
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$stmt->bindValue(':version', $version); |
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$stmt->execute(); |
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$snapshot = $stmt->fetch(); |
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return $snapshot ? $this->serializer->deserialize($snapshot['snapshot'], $snapshot['type']) : null; |
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} |
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public function initialize() |
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{ |
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$this->connection->exec( |
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'CREATE TABLE `'.self::SNAPSHOTS_TABLE.'` ( |
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`id` int(11) NOT NULL AUTO_INCREMENT, |
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`aggregate_type` varchar(255) NOT NULL, |
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`aggregate_id` varchar(255) NOT NULL, |
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`type` varchar(255) NOT NULL, |
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`version` int(11) NOT NULL, |
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`snapshot` json NOT NULL, |
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PRIMARY KEY (`id`) |
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)' |
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); |
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} |
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/** |
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* @return bool |
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*/ |
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3 |
View Code Duplication |
public function initialized() |
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{ |
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try { |
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$result = $this->connection->query('SELECT 1 FROM `'.self::SNAPSHOTS_TABLE.'` LIMIT 1'); |
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} catch (\Exception $e) { |
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return false; |
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} |
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return $result !== false; |
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} |
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} |
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DDDominio /
event-sourcing
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