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<?php |
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/* |
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* This file is part of the Borobudur-Event-Sourcing package. |
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* |
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* (c) Hexacodelabs <http://hexacodelabs.com> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Borobudur\EventSourcing\Repository; |
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use Borobudur\Broadcasting\Broadcaster; |
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use Borobudur\Broadcasting\BroadcastEventInterface; |
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use Borobudur\Bus\BusProxy; |
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use Borobudur\Cqrs\IdentifierInterface; |
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use Borobudur\Cqrs\Message\DomainEventInterface; |
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use Borobudur\EventSourcing\BroadcastEventMessage; |
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use Borobudur\EventSourcing\Domain\DomainEventStreamInterface; |
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use Borobudur\EventSourcing\Entity\AggregateRootInterface; |
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use Borobudur\EventSourcing\Exception\LogicException; |
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use Borobudur\EventSourcing\Snapshot\SnapshotInterface; |
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use Borobudur\EventSourcing\Storage\StorageInterface; |
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/** |
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* @author Iqbal Maulana <[email protected]> |
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* @created 8/20/15 |
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*/ |
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class Repository implements RepositoryInterface |
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{ |
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/** |
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* @var StorageInterface |
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*/ |
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private $storage; |
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/** |
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* @var SnapshotInterface |
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*/ |
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private $snapshot; |
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/** |
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* @var BusProxy |
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*/ |
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private $eventBus; |
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/** |
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* @var string |
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*/ |
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private $aggregateRootClass; |
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/** |
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* @var string |
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*/ |
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private $table; |
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/** |
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* Constructor. |
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* |
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* @param StorageInterface $storage |
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* @param BusProxy $eventBus |
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* @param string $aggregateRootClass |
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* @param string $table |
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*/ |
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public function __construct(StorageInterface $storage, BusProxy $eventBus, $aggregateRootClass, $table) |
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{ |
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$this->storage = $storage; |
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$this->snapshot = $storage->getSnapshot(); |
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$this->eventBus = $eventBus; |
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$this->aggregateRootClass = $aggregateRootClass; |
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$this->table = $table; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function persist(AggregateRootInterface $aggregateRoot) |
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{ |
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$this->assertInstanceOf($aggregateRoot, $this->aggregateRootClass); |
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if (null !== $this->snapshot) { |
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$this->snapshot->append($aggregateRoot, $this->table); |
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} |
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$stream = $aggregateRoot->getUncommittedEvents(); |
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if ($stream->count()) { |
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return $this->publish($stream); |
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} |
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return null; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function find(IdentifierInterface $id) |
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{ |
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$class = $this->aggregateRootClass; |
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$aggregate = null; |
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if (null !== $this->snapshot) { |
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$aggregate = $this->snapshot->find($id, $class, $this->table); |
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} |
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if (null === $aggregate) { |
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return $class::{'build'}($this->storage->findEventFromBeginning($this->table, $id)); |
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} |
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if (null !== $events = $this->storage->findEventFromVersion($this->table, $id, $aggregate->getVersion())) { |
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$aggregate->replay($events); |
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} |
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return $aggregate; |
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} |
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/** |
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* Publish domain events in stream. |
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* |
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* @param DomainEventStreamInterface $stream |
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* |
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* @return array |
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* @throws \Exception |
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*/ |
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private function publish(DomainEventStreamInterface $stream) |
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{ |
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$results = array(); |
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foreach ($stream->all() as $domain) { |
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try { |
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$results[] = $this->eventBus->dispatch($domain->getPayload()); |
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$this->storage->append($this->table, $domain, 'OK'); |
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$this->broadcast($domain->getPayload(), array('status' => 'OK', 'exception' => null)); |
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} catch (\Exception $e) { |
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$metadata = array( |
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'code' => $e->getCode(), |
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'file' => $e->getFile(), |
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'line' => $e->getLine(), |
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'message' => $e->getMessage(), |
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); |
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$this->storage->append($this->table, $domain, 'ERROR', $metadata); |
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$this->broadcast($domain->getPayload(), array('status' => 'ERROR', 'exception' => $metadata)); |
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throw $e; |
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} |
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} |
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return $results; |
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} |
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/** |
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* Broadcast event. |
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* |
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* @param DomainEventInterface $event |
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* @param array $metadata |
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*/ |
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private function broadcast(DomainEventInterface $event, array $metadata) |
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{ |
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if ($event instanceof BroadcastEventInterface) { |
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Broadcaster::getInstance()->broadcast(new BroadcastEventMessage($event, $metadata)); |
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} |
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} |
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/** |
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* Assert that aggregate root should be instance of $className |
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* |
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* @param AggregateRootInterface $aggregateRoot |
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* @param string $className |
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*/ |
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private function assertInstanceOf(AggregateRootInterface $aggregateRoot, $className) |
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{ |
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if (!$aggregateRoot instanceof $className) { |
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throw new LogicException(sprintf( |
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'Class "%s" was expected to be instanceof of "%s" but is not.', |
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get_class($aggregateRoot), |
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$className |
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)); |
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} |
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} |
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} |
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