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<?php |
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/** |
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* Event Sourcing implementation. |
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* |
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* @author Maksim Masiukevich <[email protected]> |
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* @license MIT |
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* @license https://opensource.org/licenses/MIT |
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*/ |
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declare(strict_types = 1); |
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namespace ServiceBus\EventSourcing\Snapshots\Store; |
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use function Amp\call; |
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use function ServiceBus\Storage\Sql\equalsCriteria; |
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use function ServiceBus\Storage\Sql\fetchOne; |
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use function ServiceBus\Storage\Sql\find; |
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use function ServiceBus\Storage\Sql\insertQuery; |
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use function ServiceBus\Storage\Sql\remove; |
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use Amp\Promise; |
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use ServiceBus\EventSourcing\AggregateId; |
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use ServiceBus\EventSourcing\Snapshots\Snapshot; |
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use ServiceBus\Storage\Common\BinaryDataDecoder; |
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use ServiceBus\Storage\Common\DatabaseAdapter; |
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/** |
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* |
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*/ |
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final class SqlSnapshotStore implements SnapshotStore |
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{ |
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private const TABLE_NAME = 'event_store_snapshots'; |
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/** @var DatabaseAdapter */ |
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private $adapter; |
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public function __construct(DatabaseAdapter $adapter) |
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{ |
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$this->adapter = $adapter; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function save(Snapshot $snapshot): Promise |
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{ |
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return call( |
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function() use ($snapshot): \Generator |
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{ |
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$insertQuery = insertQuery(self::TABLE_NAME, [ |
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'id' => $snapshot->aggregate->id()->toString(), |
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'aggregate_id_class' => \get_class($snapshot->aggregate->id()), |
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'aggregate_class' => \get_class($snapshot->aggregate), |
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'version' => $snapshot->aggregate->version(), |
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'payload' => \base64_encode(\serialize($snapshot)), |
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'created_at' => $snapshot->aggregate->getCreatedAt()->format('Y-m-d H:i:s.u'), |
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]); |
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$compiledQuery = $insertQuery->compile(); |
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/** @psalm-suppress MixedTypeCoercion Invalid params() docblock */ |
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yield $this->adapter->execute($compiledQuery->sql(), $compiledQuery->params()); |
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} |
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); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function load(AggregateId $id): Promise |
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{ |
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return call( |
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function() use ($id): \Generator |
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{ |
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$storedSnapshot = null; |
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$criteria = [ |
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equalsCriteria('id', $id->toString()), |
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equalsCriteria('aggregate_id_class', \get_class($id)), |
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]; |
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/** @var \ServiceBus\Storage\Common\ResultSet $resultSet */ |
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$resultSet = yield find($this->adapter, self::TABLE_NAME, $criteria); |
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/** |
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* @psalm-var array{ |
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* id: string, |
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* aggregate_id_class: string, |
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* aggregate_class: string, |
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* version: int, |
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* payload:string, |
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* created_at: string |
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* }|null $data |
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* |
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* @var array<string, string>|null $data |
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*/ |
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$data = yield fetchOne($resultSet); |
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if (null !== $data) |
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{ |
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$payload = $data['payload']; |
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if ($this->adapter instanceof BinaryDataDecoder) |
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{ |
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$payload = $this->adapter->unescapeBinary($payload); |
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} |
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$snapshotContent = (string) \base64_decode($payload); |
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if ('' !== $snapshotContent) |
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{ |
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/** @var Snapshot $storedSnapshot */ |
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$storedSnapshot = \unserialize($snapshotContent, ['allowed_classes' => true]); |
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} |
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} |
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return $storedSnapshot; |
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} |
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); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function remove(AggregateId $id): Promise |
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{ |
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return call( |
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function() use ($id): \Generator |
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{ |
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$criteria = [ |
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equalsCriteria('id', $id->toString()), |
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equalsCriteria('aggregate_id_class', \get_class($id)), |
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]; |
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yield remove($this->adapter, self::TABLE_NAME, $criteria); |
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} |
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); |
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} |
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} |
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php-service-bus /
event-sourcing
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