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<?php |
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namespace Gica\Cqrs\EventStore\InMemory; |
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use Gica\Cqrs\Event; |
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use Gica\Cqrs\Event\EventWithMetaData; |
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use Gica\Cqrs\Event\MetaData; |
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use Gica\Cqrs\EventStore; |
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use Gica\Cqrs\EventStore\AggregateEventStream; |
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use Gica\Cqrs\EventStore\EventsCommit; |
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use Gica\Cqrs\EventStore\EventStreamGroupedByCommit; |
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use Gica\Cqrs\EventStore\Exception\ConcurrentModificationException; |
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use Gica\Iterator\IteratorTransformer\IteratorExpander; |
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class InMemoryEventStore implements EventStore |
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{ |
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/** @var EventsCommit[] */ |
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public $commitsByAggregate = []; |
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private $versions = []; |
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private $latestSequence = 0; |
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public function loadEventsForAggregate(string $aggregateClass, $aggregateId): AggregateEventStream |
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{ |
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return new InMemoryAggregateEventStream( |
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$this->getEventsArrayForAggregate($aggregateClass, $aggregateId), $aggregateClass, $aggregateId, $this->latestSequence); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function appendEventsForAggregate($aggregateId, string $aggregateClass, $eventsWithMetaData, int $expectedVersion, int $expectedSequence) |
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{ |
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if ($this->getAggregateVersion($aggregateClass, $aggregateId) != $expectedVersion) { |
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throw new ConcurrentModificationException(); |
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} |
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$this->appendEventsForAggregateWithoutChecking($aggregateId, $aggregateClass, $eventsWithMetaData, $expectedVersion, $expectedSequence); |
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} |
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public function appendEventsForAggregateWithoutChecking($aggregateId, $aggregateClass, $newEvents, int $expectedVersion, int $expectedSequence) |
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{ |
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$this->addEventsToArrayForAggregate( |
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$aggregateId, |
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$aggregateClass, |
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$this->decorateEventsWithMetadata($aggregateClass, $aggregateId, $newEvents), |
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$expectedVersion, |
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$expectedSequence |
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); |
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$constructKey = $this->constructKey($aggregateClass, $aggregateId); |
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if (!isset($this->versions[$constructKey])) { |
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$this->versions[$constructKey] = 0; |
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} |
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$this->versions[$constructKey]++; |
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$this->latestSequence++; |
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} |
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private function getEventsArrayForAggregate(string $aggregateClass, $aggregateId) |
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{ |
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$aggregateKey = $this->constructKey($aggregateClass, $aggregateId); |
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return isset($this->commitsByAggregate[$aggregateKey]) |
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? $this->extractEventsFromCommits($this->commitsByAggregate[$aggregateKey]) |
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: []; |
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} |
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private function addEventsToArrayForAggregate($aggregateId, $aggregateClass, $newEvents, int $expectedVersion, int $expectedSequence) |
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{ |
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$this->commitsByAggregate[$this->constructKey($aggregateClass, $aggregateId)][] = new EventsCommit( |
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$expectedSequence, $expectedVersion, $newEvents |
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); |
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} |
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public function loadEventsByClassNames(array $eventClasses): EventStreamGroupedByCommit |
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{ |
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$commits = iterator_to_array((new IteratorExpander(function ($aggregateCommits) { |
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yield from $aggregateCommits; |
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}))($this->commitsByAggregate)); |
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return new FilteredRawEventStreamGroupedByCommit($commits, $eventClasses); |
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} |
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private function extractEventsFromCommits(array $commits = []) |
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{ |
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$eventsExtracter = new IteratorExpander(function (EventsCommit $commit) { |
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yield from $commit->getEventsWithMetadata(); |
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}); |
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return iterator_to_array($eventsExtracter($commits)); |
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} |
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public function getAggregateVersion(string $aggregateClass, $aggregateId) |
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{ |
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$key = $this->constructKey($aggregateClass, $aggregateId); |
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return isset($this->versions[$key]) ? $this->versions[$key] : 0; |
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} |
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/** |
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* @param $aggregateClass |
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* @param $aggregateId |
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* @param Event[] $priorEvents |
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* @return EventWithMetaData[] |
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*/ |
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public function decorateEventsWithMetadata($aggregateClass, $aggregateId, array $priorEvents) |
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{ |
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return array_map(function ($event) use ($aggregateClass, $aggregateId) { |
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if ($event instanceof EventWithMetaData) { |
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return $event; |
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} |
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return new EventWithMetaData($event, new MetaData( |
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$aggregateId, $aggregateClass, new \DateTimeImmutable(), null |
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)); |
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}, $priorEvents); |
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} |
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public function fetchLatestSequence(): int |
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{ |
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return $this->latestSequence; |
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} |
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private function constructKey(string $aggregateClass, $aggregateId): string |
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{ |
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return $aggregateClass . '_' . (string)$aggregateId; |
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} |
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} |
xprt64 /
cqrs-es
It seems like the type of the argument is not accepted by the function/method which you are calling.
In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.
We suggest to add an explicit type cast like in the following example: