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<?php |
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/* |
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* This file is part of the Shared Kernel library. |
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* |
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* Copyright (c) 2016-present LIN3S <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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declare(strict_types=1); |
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namespace LIN3S\SharedKernel\Infrastructure\Persistence\Sql\Event; |
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use LIN3S\SharedKernel\Domain\Model\DomainEvent; |
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use LIN3S\SharedKernel\Event\EventStore; |
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use LIN3S\SharedKernel\Event\StoredEvent; |
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use LIN3S\SharedKernel\Event\StreamName; |
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use LIN3S\SharedKernel\Event\StreamVersion; |
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use LIN3S\SharedKernel\Infrastructure\Persistence\Sql\Pdo; |
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/** |
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* @author Beñat Espiña <[email protected]> |
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*/ |
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final class SqlEventStore implements EventStore |
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{ |
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private const TABLE_NAME = 'events'; |
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private $pdo; |
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public function __construct(Pdo $pdo) |
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{ |
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$this->pdo = $pdo; |
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} |
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public function append(StoredEvent ...$events) : void |
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{ |
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$numberOfEvents = count($events); |
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if (0 === $numberOfEvents) { |
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return; |
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} |
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$this->pdo->insert(self::TABLE_NAME, array_map(function (StoredEvent $event) { |
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return $event->normalizeToAppend(); |
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}, $events)); |
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} |
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public function eventsSince(?\DateTimeInterface $since, int $offset = 0, int $limit = -1) : array |
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{ |
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$since = null === $since ? 0 : $since->getTimestamp(); |
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$tableName = self::TABLE_NAME; |
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$sql = <<<SQL |
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SELECT * FROM `$tableName` |
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WHERE occurred_on >= :occurredOn |
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ORDER BY `order` ASC |
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LIMIT $limit |
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OFFSET $offset |
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SQL; |
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$storedEventRows = $this->pdo->query($sql, ['occurredOn' => $since]); |
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$storedEvents = $this->buildStoredEvents($storedEventRows); |
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return $storedEvents; |
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} |
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private function buildStoredEvents(array $storedEventRows) : array |
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{ |
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$events = []; |
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foreach ($storedEventRows as $storedEventRow) { |
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$storedEvent = new StoredEvent( |
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$this->buildDomainEvent($storedEventRow), |
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StreamName::fromName($storedEventRow['stream_name']), |
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new StreamVersion((int) $storedEventRow['stream_version']) |
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); |
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$orderProperty = new \ReflectionProperty(StoredEvent::class, 'order'); |
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$orderProperty->setAccessible(true); |
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$orderProperty->setValue($storedEvent, $storedEventRow['order']); |
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$events[] = $storedEvent; |
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} |
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return $events; |
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} |
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private function buildDomainEvent(array $storedEventRow) : DomainEvent |
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{ |
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$type = $storedEventRow['type']; |
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$payload = json_decode($storedEventRow['payload'], true); |
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$eventReflection = new \ReflectionClass($type); |
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$domainEvent = $eventReflection->newInstanceWithoutConstructor(); |
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foreach ($eventReflection->getProperties() as $property) { |
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$property->setAccessible(true); |
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if ('occurredOn' === $property->getName()) { |
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$occurredOn = new \DateTimeImmutable(); |
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$occurredOn->setTimestamp((int) $storedEventRow['occurred_on']); |
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$property->setValue($domainEvent, $occurredOn); |
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continue; |
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} |
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$this->unSerialize($property, $payload[$property->getName()], $domainEvent); |
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} |
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return $domainEvent; |
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} |
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private function unSerialize(\ReflectionProperty $reflectedProperty, $value, $object) |
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{ |
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if (is_scalar($value)) { |
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$reflectedProperty->setValue($object, $value); |
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return $object; |
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} |
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if (null === $value) { |
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return $object; |
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} |
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$className = key($value); |
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if (null === $className || is_int($className)) { |
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return $object; |
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} |
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$reflectedClass = new \ReflectionClass($className); |
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$class = $reflectedClass->newInstanceWithoutConstructor(); |
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$classValues = $value[$className]; |
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foreach ($reflectedClass->getProperties() as $property) { |
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$property->setAccessible(true); |
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$attribute = $this->unSerialize($property, $classValues[$property->getName()], $class); |
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$reflectedProperty->setAccessible(true); |
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$reflectedProperty->setValue($object, $attribute); |
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} |
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return $object; |
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} |
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public static function createSchema() : string |
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{ |
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$tableName = self::TABLE_NAME; |
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return <<<SQL |
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CREATE TABLE IF NOT EXISTS `$tableName` ( |
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`order` BIGINT(20) NOT NULL AUTO_INCREMENT, |
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`type` VARCHAR(150) COLLATE utf8_bin NOT NULL, |
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`payload` LONGTEXT NOT NULL, |
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`occurred_on` INT(10) NOT NULL, |
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`stream_name` VARCHAR(255) NOT NULL, |
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`stream_version` INT NOT NULL, |
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PRIMARY KEY (`order`) |
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) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin; |
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SQL; |
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} |
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public static function removeSchema() : string |
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{ |
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$tableName = self::TABLE_NAME; |
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return "DROP TABLE `$tableName`"; |
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} |
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} |
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