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<?php |
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namespace Daikon\RabbitMq3\Job; |
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use Assert\Assertion; |
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use Daikon\AsyncJob\Event\JobFailed; |
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use Daikon\AsyncJob\Job\JobMap; |
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use Daikon\AsyncJob\Worker\WorkerInterface; |
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use Daikon\MessageBus\Envelope; |
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use Daikon\MessageBus\EnvelopeInterface; |
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use Daikon\MessageBus\MessageBusInterface; |
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use Daikon\MessageBus\Metadata\Metadata; |
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use Daikon\RabbitMq3\Connector\RabbitMq3Connector; |
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use PhpAmqpLib\Message\AMQPMessage; |
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final class RabbitMq3Worker implements WorkerInterface |
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{ |
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private $connector; |
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private $messageBus; |
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private $jobMap; |
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private $settings; |
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public function __construct( |
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RabbitMq3Connector $connector, |
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MessageBusInterface $messageBus, |
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JobMap $jobMap, |
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array $settings = [] |
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) { |
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$this->connector = $connector; |
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$this->messageBus = $messageBus; |
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$this->jobMap = $jobMap; |
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$this->settings = $settings; |
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} |
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public function run(array $parameters = []): void |
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{ |
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$queue = $parameters['queue']; |
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Assertion::notBlank($queue); |
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$messageHandler = function (AMQPMessage $message) { |
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$this->execute($message); |
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}; |
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$channel = $this->connector->getConnection()->channel(); |
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$channel->basic_qos(null, 1, null); |
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$channel->basic_consume($queue, false, true, false, false, false, $messageHandler); |
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while (count($channel->callbacks)) { |
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$channel->wait(); |
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} |
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} |
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private function execute(AMQPMessage $message): void |
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{ |
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$deliveryInfo = $message->delivery_info; |
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$channel = $deliveryInfo['channel']; |
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$deliveryTag = $deliveryInfo['delivery_tag']; |
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$envelope = Envelope::fromArray(json_decode($message->body, true)); |
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$metadata = $envelope->getMetadata(); |
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$job = $this->jobMap->get($metadata->get('job')); |
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try { |
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$this->messageBus->receive($envelope); |
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} catch (\Exception $error) { |
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if ($job->getStrategy()->canRetry()) { |
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$this->retry($envelope); |
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} else { |
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$this->fail( |
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$envelope, |
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$metadata->with('_errorMessage', $error->getMessage()) |
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); |
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} |
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} |
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$channel->basic_ack($deliveryTag); |
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} |
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private function retry(EnvelopeInterface $envelope): void |
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{ |
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//work out retry mechanism |
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//republish to message bus with expiration? |
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//defer in transport? |
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} |
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private function fail(EnvelopeInterface $envelope, Metadata $metadata): void |
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{ |
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$jobFailed = JobFailed::fromArray(['failed_message' => $envelope->getMessage()]); |
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$this->messageBus->publish($jobFailed, 'logging', $metadata); |
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} |
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} |