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<?php |
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declare(strict_types=1); |
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namespace Antidot\EventSource\Domain\Event; |
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use DateTimeImmutable; |
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use InvalidArgumentException; |
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use JsonSerializable; |
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use Psr\EventDispatcher\StoppableEventInterface; |
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use Ramsey\Uuid\Uuid; |
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use RuntimeException; |
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abstract class AggregateChanged implements StoppableEventInterface, JsonSerializable |
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{ |
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protected const VERSION = 1; |
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protected const DATE_FORMAT = 'Y-m-d H:i:s'; |
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protected const PROPERTIES = [ |
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'aggregate_id', |
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'payload', |
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'occurred_on', |
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]; |
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protected string $eventId; |
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protected string $aggregateId; |
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protected array $payload; |
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protected int $version; |
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protected bool $stopped = false; |
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protected DateTimeImmutable $occurredOn; |
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final public function __construct( |
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string $eventId, |
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string $aggregateId, |
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array $payload, |
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DateTimeImmutable $occurredOn |
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) { |
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$this->eventId = $eventId; |
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$this->aggregateId = $aggregateId; |
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$this->payload = $payload; |
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$this->occurredOn = $occurredOn; |
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/** @var int $version */ |
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$version = is_int(static::VERSION) ? static::VERSION : 1; |
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$this->version = $version; |
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} |
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public static function occur(string $aggregateId, array $payload): self |
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{ |
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$now = DateTimeImmutable::createFromFormat(self::DATE_FORMAT, date(self::DATE_FORMAT)); |
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if (false === $now) { |
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throw new RuntimeException('Error ocurred obtaining datetime from server.'); |
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} |
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return new static( |
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Uuid::uuid4()->toString(), |
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$aggregateId, |
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$payload, |
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$now |
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); |
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} |
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private static function assertValidSerialisedEvent(array $serializedEvent): void |
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{ |
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foreach (self::PROPERTIES as $property) { |
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if (array_key_exists($property, $serializedEvent)) { |
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throw new InvalidArgumentException(sprintf( |
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'Property %s is required to reconstitute an event.', |
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$property |
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)); |
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} |
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} |
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} |
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public function eventId(): string |
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{ |
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return $this->eventId; |
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} |
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public function aggregateId(): string |
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{ |
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return $this->aggregateId; |
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} |
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public function payload(): array |
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{ |
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return $this->payload; |
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} |
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public function occurredOn(): DateTimeImmutable |
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{ |
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return $this->occurredOn; |
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} |
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public function isPropagationStopped(): bool |
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{ |
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return $this->stopped; |
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} |
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public function version(): int |
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{ |
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return $this->version; |
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} |
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public function jsonSerialize(): array |
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{ |
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return [ |
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'name' => static::class, |
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'aggregate_id' => $this->aggregateId, |
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'payload' => $this->payload, |
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'occurred_on' => $this->occurredOn, |
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'version' => $this->version, |
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]; |
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} |
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} |
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