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<?php |
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/****************************************************************************** |
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* Copyright (c) 2016 Constantin Galbenu <[email protected]> * |
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******************************************************************************/ |
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namespace Gica\Cqrs\ReadModel; |
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use Gica\CodeAnalysis\MethodListenerDiscovery; |
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use Gica\CodeAnalysis\MethodListenerDiscovery\ListenerClassValidator\AnyPhpClassIsAccepted; |
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use Gica\CodeAnalysis\MethodListenerDiscovery\ListenerMethod; |
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use Gica\Cqrs\Command\CodeAnalysis\ReadModelEventHandlerDetector; |
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use Gica\Cqrs\Event\EventWithMetaData; |
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use Gica\Cqrs\EventStore; |
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use Gica\Cqrs\ProgressReporting\TaskProgressCalculator; |
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use Gica\Cqrs\ProgressReporting\TaskProgressReporter; |
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use Psr\Log\LoggerInterface; |
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class ReadModelRecreator |
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{ |
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/** |
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* @var EventStore |
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*/ |
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private $eventStore; |
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/** |
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* @var LoggerInterface |
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*/ |
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private $logger; |
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/** |
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* @var \Gica\Cqrs\ProgressReporting\TaskProgressReporter|null |
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*/ |
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private $taskProgressReporter; |
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public function __construct( |
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EventStore $eventStore, |
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LoggerInterface $logger |
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) |
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{ |
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$this->eventStore = $eventStore; |
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$this->logger = $logger; |
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} |
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public function setTaskProgressReporter(?TaskProgressReporter $taskProgressReporter) |
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{ |
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$this->taskProgressReporter = $taskProgressReporter; |
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} |
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public function recreateRead(ReadModelInterface $readModel) |
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{ |
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$discoverer = new MethodListenerDiscovery( |
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new ReadModelEventHandlerDetector(), |
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new AnyPhpClassIsAccepted() |
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); |
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$allMethods = $discoverer->findListenerMethodsInClass(get_class($readModel)); |
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$eventClasses = $this->getEventClassesFromMethods($allMethods); |
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$this->logger->info(print_r($eventClasses, true)); |
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$this->logger->info("loading events..."); |
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$allEvents = $this->eventStore->loadEventsByClassNames($eventClasses); |
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$this->logger->info("applying events..."); |
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$taskProgress = null; |
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if ($this->taskProgressReporter) { |
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$taskProgress = new TaskProgressCalculator($allEvents->countCommits()); |
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} |
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foreach ($allEvents->fetchCommits() as $eventsCommit) { |
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$eventsCommit = $eventsCommit->filterEventsByClass($eventClasses); |
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foreach ($eventsCommit->getEventsWithMetadata() as $eventWithMetadata) { |
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/** @var EventWithMetaData $eventWithMetadata */ |
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$methods = $this->findMethodsByEventClass(get_class($eventWithMetadata->getEvent()), $allMethods); |
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foreach ($methods as $method) { |
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call_user_func([$readModel, $method->getMethodName()], $eventWithMetadata->getEvent(), $eventWithMetadata->getMetaData()); |
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} |
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} |
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if ($this->taskProgressReporter) { |
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$taskProgress->increment(); |
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$this->taskProgressReporter->reportProgressUpdate($taskProgress->getStep(), $taskProgress->getTotalSteps(), $taskProgress->calculateSpeed(), $taskProgress->calculateEta()); |
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} |
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} |
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} |
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/** |
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* @param ListenerMethod[] $methods |
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* @return array |
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*/ |
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private function getEventClassesFromMethods($methods) |
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{ |
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$eventClasses = []; |
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foreach ($methods as $listenerMethod) { |
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$eventClasses[] = $listenerMethod->getEventClassName(); |
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} |
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return $eventClasses; |
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} |
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/** |
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* @param string $eventClass |
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* @param ListenerMethod[] $allMethods |
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* @return ListenerMethod[] |
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*/ |
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private function findMethodsByEventClass(string $eventClass, $allMethods) |
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{ |
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$result = []; |
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foreach ($allMethods as $listenerMethod) { |
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if ($listenerMethod->getEventClassName() == $eventClass) { |
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$result[] = $listenerMethod; |
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} |
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} |
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return $result; |
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} |
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} |