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<?php |
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/** |
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* Copyright (c) 2017 Constantin Galbenu <[email protected]> |
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*/ |
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namespace Gica\Cqrs\Command\CommandTester; |
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use Gica\Cqrs\Aggregate\AggregateRepository; |
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use Gica\Cqrs\Command; |
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use Gica\Cqrs\Command\CommandApplier; |
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use Gica\Cqrs\Command\CommandSubscriber; |
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use Gica\Cqrs\Command\CommandTesterWithSideEffect; |
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use Gica\Cqrs\Command\CommandWithMetadata; |
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use Gica\Cqrs\Command\MetadataWrapper as CommandMetadataFactory; |
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use Gica\Cqrs\Command\ValueObject\CommandHandlerAndAggregate; |
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use Gica\Cqrs\Event\EventsApplier\EventsApplierOnAggregate; |
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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\Event\MetadataFactory as EventMetadataFactory; |
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use Gica\Cqrs\Event\ScheduledEvent; |
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use Gica\Cqrs\Scheduling\ScheduledCommand; |
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use Gica\Types\Guid; |
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View Code Duplication |
class DefaultCommandTesterWithSideEffect implements CommandTesterWithSideEffect |
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{ |
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/** |
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* @var CommandSubscriber |
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*/ |
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private $commandSubscriber; |
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/** |
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* @var CommandApplier |
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*/ |
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private $commandApplier; |
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/** |
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* @var AggregateRepository |
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*/ |
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private $aggregateRepository; |
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/** |
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* @var EventsApplierOnAggregate |
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*/ |
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private $eventsApplierOnAggregate; |
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/** |
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* @var EventMetadataFactory |
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*/ |
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private $eventMetadataFactory; |
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/** |
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* @var CommandMetadataFactory |
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*/ |
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private $commandMetadataFactory; |
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public function __construct( |
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CommandSubscriber $commandSubscriber, |
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CommandApplier $commandApplier, |
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AggregateRepository $aggregateRepository, |
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EventsApplierOnAggregate $eventsApplier, |
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EventMetadataFactory $eventMetadataFactory, |
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CommandMetadataFactory $commandMetadataFactory |
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) |
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{ |
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$this->commandSubscriber = $commandSubscriber; |
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$this->commandApplier = $commandApplier; |
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$this->aggregateRepository = $aggregateRepository; |
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$this->eventsApplierOnAggregate = $eventsApplier; |
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$this->eventMetadataFactory = $eventMetadataFactory; |
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$this->commandMetadataFactory = $commandMetadataFactory; |
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} |
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public function shouldExecuteCommand(Command $command): bool |
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{ |
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$command = $this->commandMetadataFactory->wrapCommandWithMetadata($command, null); |
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return $this->applyCommand($command, $this->loadCommandHandlerAndAggregate($command)); |
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} |
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private function loadCommandHandlerAndAggregate(CommandWithMetadata $command): CommandHandlerAndAggregate |
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{ |
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return new CommandHandlerAndAggregate( |
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$this->commandSubscriber->getHandlerForCommand($command->getCommand()), |
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$this->aggregateRepository->loadAggregate($this->commandSubscriber->getHandlerForCommand($command->getCommand())->getHandlerClass(), $command->getAggregateId()) |
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); |
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} |
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private function decorateEventWithMetaData($event, MetaData $metaData): EventWithMetaData |
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{ |
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return new EventWithMetaData($event, $metaData->withEventId(Guid::generate())); |
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} |
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/** |
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* @param CommandWithMetadata $command |
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* @param CommandHandlerAndAggregate $handlerAndAggregate |
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* @return bool |
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*/ |
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private function applyCommand(CommandWithMetadata $command, CommandHandlerAndAggregate $handlerAndAggregate): bool |
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{ |
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$aggregate = $handlerAndAggregate->getAggregate(); |
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$handler = $handlerAndAggregate->getCommandHandler(); |
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$metaData = $this->eventMetadataFactory->factoryEventMetadata($command, $aggregate); |
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$newMessageGenerator = $this->commandApplier->applyCommand($aggregate, $command->getCommand(), $handler->getMethodName()); |
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foreach ($newMessageGenerator as $message) { |
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if (!$this->isScheduledCommand($message)) { |
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$eventWithMetaData = $this->decorateEventWithMetaData($message, $metaData); |
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if (!$this->isScheduledEvent($message)) { |
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$this->eventsApplierOnAggregate->applyEventsOnAggregate($aggregate, [$eventWithMetaData]); |
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} |
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} |
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return true; |
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} |
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return false; |
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} |
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private function isScheduledEvent($event): bool |
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{ |
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return $event instanceof ScheduledEvent; |
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} |
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private function isScheduledCommand($message): bool |
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{ |
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return $message instanceof ScheduledCommand; |
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} |
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} |
xprt64 /
cqrs-es
Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.
You can also find more detailed suggestions in the “Code” section of your repository.