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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\NoEventsFoundForKeyException; |
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use Rawkode\Eidetic\EventSourcing\EventSourcedEntity; |
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final class InMemoryEventStore extends EventStore |
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{ |
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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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* @param EventSourcedEntity $eventSourcedEntity |
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* |
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* @throws InvalidEventException |
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*/ |
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protected function persist(EventSourcedEntity $eventSourcedEntity) |
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{ |
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if (false === array_key_exists($eventSourcedEntity->identifier(), $this->events)) { |
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$this->events[$eventSourcedEntity->identifier()] = []; |
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} |
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foreach ($eventSourcedEntity->stagedEvents() as $event) { |
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$this->events[$eventSourcedEntity->identifier()][] = [ |
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'entity_identifier' => $eventSourcedEntity->identifier(), |
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'serial_number' => count($this->events[$eventSourcedEntity->identifier()]) + 1, |
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'entity_class' => get_class($eventSourcedEntity), |
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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' => $this->serialize($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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/** |
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* @param string $entityIdentifier |
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* |
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* @throws NoEventsFoundForKeyException |
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* |
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* @return array |
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*/ |
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protected function eventLog($entityIdentifier) |
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{ |
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$this->verifyEventExistsForKey($entityIdentifier); |
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return array_map(function ($eventLogEntry) { |
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$eventLogEntry['event'] = $this->unserialize($eventLogEntry['event']); |
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return $eventLogEntry; |
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}, $this->events[$entityIdentifier]); |
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} |
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/** |
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*/ |
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protected 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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protected 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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protected 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 $entityIdentifier |
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* |
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* @throws NoEventsFoundForKeyException |
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*/ |
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protected function verifyEventExistsForKey($entityIdentifier) |
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{ |
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if (false === array_key_exists($entityIdentifier, $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
