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<?php |
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namespace Rawkode\Eidetic\EventStore\InMemoryEventStore; |
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use Rawkode\Eidetic\EventStore\InvalidEventException; |
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use Rawkode\Eidetic\EventStore\EventStore; |
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use Rawkode\Eidetic\EventStore\EventPublisherMixin; |
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use Rawkode\Eidetic\EventStore\NoEventsFoundForKeyException; |
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use Rawkode\Eidetic\EventStore\Subscriber; |
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use Rawkode\Eidetic\EventStore\VerifyEventIsAClassTrait; |
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use Rawkode\Eidetic\EventStore\InMemoryEventStore\TransactionAlreadyInProgressException; |
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use Rawkode\Eidetic\EventStore\EventPublisher; |
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use Doctrine\Common\EventSubscriber; |
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final class InMemoryEventStore implements EventStore |
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{ |
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use EventPublisherMixin; |
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use VerifyEventIsAClassTrait; |
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/** |
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* @var int |
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*/ |
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private $serialNumber = 0; |
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/** |
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* @var array |
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*/ |
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private $events = []; |
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/** |
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* @var array |
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*/ |
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private $transactionBackup = []; |
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/** |
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* @var array |
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*/ |
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private $stagedEvents = []; |
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/** |
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* @param string $key |
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* |
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* @return array |
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*/ |
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public function retrieve($key) |
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{ |
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$eventLogs = $this->eventLogs($key); |
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return array_map(function ($eventLog) { |
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return $eventLog['event']; |
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}, $eventLogs); |
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} |
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/** |
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* @param string $key |
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* |
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* @return array |
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*/ |
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public function retrieveLogs($key) |
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{ |
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return $this->eventLogs($key); |
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} |
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/** |
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* @param string $key |
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* |
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* @throws NoEventsFoundForKeyException |
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* |
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* @return array |
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*/ |
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private function eventLogs($key) |
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{ |
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$this->verifyEventExistsForKey($key); |
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return $this->events[$key]; |
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} |
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/** |
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* @param string $key |
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* @param array $events |
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* |
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* @throws TransactionAlreadyInProgressException |
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* @throws InvalidEventException |
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*/ |
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public function store($key, array $events) |
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{ |
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try { |
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$this->startTransaction(); |
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foreach ($events as $event) { |
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$this->persistEvent($key, $event); |
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} |
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} catch (InvalidEventException $invalidEventException) { |
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$this->abortTransaction(); |
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throw $invalidEventException; |
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} |
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$this->completeTransaction(); |
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} |
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/** |
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* @throws TransactionAlreadyInProgressException |
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*/ |
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private function startTransaction() |
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{ |
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$this->transactionBackup = $this->events; |
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$this->stagedEvents = []; |
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} |
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/** |
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*/ |
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private function abortTransaction() |
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{ |
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$this->events = $this->transactionBackup; |
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$this->stagedEvents = []; |
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} |
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/** |
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*/ |
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private function completeTransaction() |
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{ |
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$this->transactionBackup = []; |
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foreach ($this->stagedEvents as $event) { |
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$this->publish(self::EVENT_STORED, $event); |
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} |
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$this->stagedEvents = []; |
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} |
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/** |
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* @param string $key |
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* @param $event |
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* |
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* @throws InvalidEventException |
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*/ |
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private function persistEvent($key, $event) |
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{ |
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$this->verifyEventIsAClass($event); |
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$this->events[$key][] = [ |
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'serial_number' => ++$this->serialNumber, |
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'key' => $key, |
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'recorded_at' => new \DateTime('now', new \DateTimeZone('UTC')), |
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'event_class' => get_class($event), |
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'event' => $event, |
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]; |
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array_push($this->stagedEvents, $event); |
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} |
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/** |
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* @param $key |
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* @return string |
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*/ |
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public function getClassForKey($key) |
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{ |
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$this->verifyEventExistsForKey($key); |
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return get_class($this->events[$key][0]['event']); |
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} |
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/** |
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* @param $key |
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* @throws NoEventsFoundForKeyException |
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*/ |
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private function verifyEventExistsForKey($key) |
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{ |
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if (false === array_key_exists($key, $this->events)) { |
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throw new NoEventsFoundForKeyException(); |
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} |
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} |
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} |
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rawkode /
eidetic
