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<?php |
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declare(strict_types=1); |
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namespace Antidot\EventSource\Infrastructure\Repository; |
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use Antidot\EventSource\Domain\Event\AggregateChanged; |
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use Antidot\EventSource\Domain\Model\Aggregate\AggregateRoot; |
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use Antidot\EventSource\Domain\Model\ValueObject\AggregateRootId; |
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use DateTimeImmutable; |
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use Doctrine\DBAL\Connection; |
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use function get_class; |
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use function json_encode; |
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abstract class DbalAggregateRootSingleTableRepository |
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{ |
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protected Connection $connection; |
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protected string $streamName; |
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public function __construct(Connection $connection, string $streamName) |
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{ |
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$this->connection = $connection; |
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$this->streamName = $streamName; |
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} |
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protected function getAggregate(AggregateRootId $aggregateRootId, string $aggregateClass): ?AggregateRoot |
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{ |
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$tableName = $this->streamName; |
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if (false === $this->tableExist($tableName)) { |
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return null; |
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} |
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$statement = $this->connection->prepare(<<<SQL |
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SELECT * FROM |
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`$tableName` |
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WHERE |
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aggregate_id = :aggregate_id |
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ORDER BY |
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no ASC; |
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SQL |
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); |
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$statement->bindValue('aggregate_id', $aggregateRootId->value()); |
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$statement->execute(); |
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/** @var null|array $queryResult */ |
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$queryResult = $statement->fetchAll(); |
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/** @var AggregateRoot $aggregate */ |
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$aggregate = new $aggregateClass(); |
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/** @var array<string, mixed> $item */ |
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foreach ($queryResult ?? [] as $item) { |
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/** @var string $eventClass */ |
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$eventClass = $item['event_class']; |
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/** @var string $payload */ |
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$payload = $item['payload']; |
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/** @var string $occurredOn */ |
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$occurredOn = $item['occurred_on']; |
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/** @var AggregateChanged $event */ |
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$event = new $eventClass( |
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$item['event_id'], |
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$item['aggregate_id'], |
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json_decode($payload, true, 16, JSON_THROW_ON_ERROR), |
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DateTimeImmutable::createFromFormat('Y-m-d H:i:s', $occurredOn) |
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); |
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$aggregate->apply($event); |
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} |
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return $aggregate; |
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} |
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protected function saveAggregate(AggregateRoot $aggregateRoot): void |
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{ |
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$tableName = $this->streamName; |
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$this->createAggregateStream($tableName); |
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$this->connection->beginTransaction(); |
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try { |
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/** @var AggregateChanged $event */ |
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foreach ($aggregateRoot->popEvents() as $event) { |
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$this->connection->insert($tableName, [ |
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'event_id' => $event->eventId(), |
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'event_class' => get_class($event), |
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'aggregate_id' => $event->aggregateId(), |
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'aggregate_class' => get_class($aggregateRoot), |
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'payload' => json_encode($event->payload(), JSON_THROW_ON_ERROR), |
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'occurred_on' => $event->occurredOn()->format('Y-m-d H:i:s'), |
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'version' => $event->version(), |
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]); |
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} |
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$this->connection->commit(); |
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} catch (\Throwable $exception) { |
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$this->connection->rollBack(); |
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throw $exception; |
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} |
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} |
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protected function createAggregateStream(string $tableName): void |
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{ |
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if ($this->tableExist($tableName)) { |
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return; |
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} |
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$statement = $this->connection->prepare(<<<SQL |
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CREATE TABLE `$tableName` ( |
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`no` BIGINT(20) NOT NULL AUTO_INCREMENT, |
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`event_id` VARCHAR(36) NOT NULL, |
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`event_class` CHAR(180) NOT NULL, |
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`aggregate_id` VARCHAR(36) NOT NULL, |
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`aggregate_class` CHAR(180) NOT NULL, |
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`payload` JSON, |
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`occurred_on` DATETIME NOT NULL, |
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`version` INT(3) NOT NULL, |
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PRIMARY KEY (`no`), |
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UNIQUE KEY `ix_rsn` (`event_id`), |
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KEY `ix_aggregate_id` (`aggregate_id`) |
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) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin; |
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SQL |
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); |
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$statement->execute(); |
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} |
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private function tableExist(string $tableName): bool |
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{ |
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$statement = $this->connection->prepare(<<<SQL |
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SELECT * FROM |
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information_schema.tables t |
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WHERE |
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t.table_schema = :db_name |
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AND t.table_name = :aggregate_stream |
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LIMIT 1; |
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SQL |
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); |
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$statement->bindValue(':db_name', $this->connection->getDatabase()); |
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$statement->bindValue(':aggregate_stream', $tableName); |
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$statement->execute(); |
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/** @var array|false $result */ |
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$result = $statement->fetch(); |
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return false === empty($result); |
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} |
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} |
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antidot-framework /
event-sourcing
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