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<?php |
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namespace DDDominio\EventSourcing\EventStore; |
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use DDDominio\EventSourcing\Common\EventStream; |
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use DDDominio\EventSourcing\Common\EventStreamInterface; |
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use DDDominio\EventSourcing\Serialization\SerializerInterface; |
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use DDDominio\EventSourcing\Versioning\EventUpgraderInterface; |
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use DDDominio\EventSourcing\Versioning\Version; |
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class InMemoryEventStore extends AbstractEventStore |
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{ |
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/** |
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* @var IdentifiedEventStream[] |
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*/ |
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private $streams; |
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/** |
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* @param SerializerInterface $serializer |
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* @param EventUpgraderInterface $eventUpgrader |
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* @param IdentifiedEventStream[] $streams |
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*/ |
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public function __construct( |
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SerializerInterface $serializer, |
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EventUpgraderInterface $eventUpgrader, |
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array $streams = [] |
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) { |
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parent::__construct($serializer, $eventUpgrader); |
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$this->streams = $streams; |
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} |
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/** |
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* @param string $streamId |
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* @param StoredEvent[] $storedEvents |
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* @param int $expectedVersion |
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*/ |
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protected function appendStoredEvents($streamId, $storedEvents, $expectedVersion) |
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{ |
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if ($this->streamExists($streamId)) { |
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$this->streams[$streamId] = $this->streams[$streamId]->append($storedEvents); |
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} else { |
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$this->streams[$streamId] = new IdentifiedEventStream($streamId, $storedEvents); |
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} |
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} |
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/** |
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* @param string $streamId |
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* @return EventStreamInterface |
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*/ |
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public function readFullStream($streamId) |
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{ |
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if ($this->streamExists($streamId)) { |
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return $this->domainEventStreamFromStoredEvents($this->streams[$streamId]); |
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} else { |
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return EventStream::buildEmpty(); |
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} |
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} |
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/** |
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* @param string $streamId |
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* @param int $start |
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* @param int $count |
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* @return EventStreamInterface |
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*/ |
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public function readStreamEvents($streamId, $start = 1, $count = null) |
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{ |
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if (!$this->streamExists($streamId)) { |
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return EventStream::buildEmpty(); |
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} |
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return $this->domainEventStreamFromStoredEvents( |
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$this->streams[$streamId]->slice($start - 1, $count) |
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); |
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} |
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/** |
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* @return EventStreamInterface[] |
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*/ |
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public function readAllStreams() |
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{ |
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$allStreams = []; |
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foreach ($this->streams as $stream) { |
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$allStreams[] = $this->domainEventStreamFromStoredEvents($stream); |
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} |
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return $allStreams; |
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} |
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/** |
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* @return EventStreamInterface |
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*/ |
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public function readAllEvents() |
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{ |
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$allEventsStream = EventStream::buildEmpty(); |
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foreach ($this->streams as $stream) { |
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$streamEvents = $this->domainEventStreamFromStoredEvents($stream); |
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$allEventsStream = $allEventsStream->append($streamEvents->events()); |
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} |
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return $allEventsStream; |
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} |
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/** |
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* @param string $streamId |
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* @return int |
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*/ |
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protected function streamVersion($streamId) |
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{ |
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return $this->streamExists($streamId) ? |
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$this->streams[$streamId]->count() : 0; |
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} |
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/** |
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* @param string $type |
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* @param Version $version |
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* @return EventStreamInterface |
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*/ |
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protected function readStoredEventsOfTypeAndVersion($type, $version) |
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{ |
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$storedEvents = []; |
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foreach ($this->streams as $stream) { |
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/** @var StoredEvent $event */ |
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foreach ($stream as $event) { |
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if ($event->type() === $type && $event->version()->equalTo($version)) { |
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$storedEvents[] = $event; |
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} |
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} |
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} |
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return new EventStream($storedEvents); |
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} |
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/** |
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* @param string $streamId |
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* @return bool |
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*/ |
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protected function streamExists($streamId) |
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{ |
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return isset($this->streams[$streamId]); |
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} |
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/** |
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* @param string $streamId |
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* @param \DateTimeImmutable $datetime |
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* @return int |
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* @throws EventStreamDoesNotExistException |
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*/ |
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public function getStreamVersionAt($streamId, \DateTimeImmutable $datetime) |
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{ |
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if (!$this->streamExists($streamId)) { |
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throw EventStreamDoesNotExistException::fromStreamId($streamId); |
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} |
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3 |
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$filteredStoredEvents = $this->streams[$streamId]->filter(function(StoredEvent $event) use ($datetime) { |
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return $event->occurredOn()->getTimestamp() <= $datetime->getTimestamp(); |
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}); |
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return count($filteredStoredEvents); |
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} |
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} |
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DDDominio /
event-sourcing
