64 lines
2.1 KiB
PHP
64 lines
2.1 KiB
PHP
<?php
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declare(strict_types=1);
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namespace App\MessageHandler;
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use App\Message\SignalCreatedMessage;
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use App\Repository\SignalRepository;
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use App\Service\SignalSnapshotBuilder;
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use Psr\Log\LoggerInterface;
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use Symfony\Component\DependencyInjection\Attribute\Autowire;
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use Symfony\Component\Mercure\HubInterface;
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use Symfony\Component\Mercure\Update;
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use Symfony\Component\Messenger\Attribute\AsMessageHandler;
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use Symfony\Component\Serializer\Exception\ExceptionInterface;
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use Symfony\Component\Serializer\SerializerInterface;
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use Throwable;
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#[AsMessageHandler]
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final readonly class SignalCreatedMessageHandler
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{
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public function __construct(
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private SignalRepository $signals,
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private SignalSnapshotBuilder $snapshotBuilder,
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private HubInterface $hub,
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private SerializerInterface $serializer,
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private LoggerInterface $logger,
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#[Autowire('%app.signal_stream_topic%')] private string $topic,
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#[Autowire('%app.signal_snapshot_limit%')] private int $snapshotLimit,
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) {
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}
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/**
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* @throws ExceptionInterface
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*/
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public function __invoke(SignalCreatedMessage $message): void
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{
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$recentSignals = $this->signals->findRecent($this->snapshotLimit);
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$snapshot = $this->snapshotBuilder->build($recentSignals);
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$payload = [
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'type' => 'snapshot',
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'payload' => [
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'points' => $snapshot['points'],
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'density' => $snapshot['density'],
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'latestByUser' => $snapshot['latestByUser'],
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'totals' => $snapshot['totals'],
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'updatedAt' => new \DateTimeImmutable('now', new \DateTimeZone('UTC'))->format(DATE_ATOM),
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],
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];
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$data = $this->serializer->serialize($payload, 'json');
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$update = new Update(topics: $this->topic, data: $data);
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try {
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$this->hub->publish($update);
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} catch (Throwable $exception) {
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$this->logger->error('Failed to publish signal update to Mercure.', [
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'exception' => $exception,
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]);
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}
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}
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}
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