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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\Snapshotting\SnapshotInterface; |
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use DDDominio\EventSourcing\Snapshotting\SnapshotStoreInterface; |
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use DDDominio\EventSourcing\Serialization\SerializerInterface; |
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use Doctrine\DBAL\Connection; |
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use Doctrine\DBAL\Schema\Schema; |
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class DoctrineDbalSnapshotStore implements SnapshotStoreInterface, InitializableInterface |
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{ |
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const SNAPSHOTS_TABLE = 'snapshots'; |
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/** |
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* @var Connection |
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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 Connection $connection |
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* @param SerializerInterface $serializer |
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*/ |
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public function __construct(Connection $connection, 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'], $snapshot['type']) : null; |
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} |
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/** |
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* Initialize the Event Store |
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*/ |
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public function initialize() |
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{ |
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$schema = new Schema(); |
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$snapshotsTable = $schema->createTable(self::SNAPSHOTS_TABLE); |
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$snapshotsTable->addColumn('id', 'integer', ['autoincrement' => true]); |
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$snapshotsTable->addColumn('aggregate_type', 'string'); |
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$snapshotsTable->addColumn('aggregate_id', 'string'); |
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$snapshotsTable->addColumn('type', 'string'); |
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$snapshotsTable->addColumn('version', 'integer'); |
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$snapshotsTable->addColumn('snapshot', 'text'); |
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$snapshotsTable->setPrimaryKey(['id']); |
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$queries = $schema->toSql($this->connection->getDatabasePlatform()); |
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$this->connection->transactional(function(Connection $connection) use ($queries) { |
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foreach ($queries as $query) { |
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$connection->exec($query); |
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} |
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}); |
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} |
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/** |
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* Check if the Event Store has been initialized |
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* |
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* @return bool |
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*/ |
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public function initialized() |
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{ |
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return $this->connection->getSchemaManager()->tablesExist([self::SNAPSHOTS_TABLE]); |
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} |
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} |
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DDDominio /
event-sourcing
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