feat: shortened and filename-safe request ids

src/BusProNet/ApiClient.php

@@ -22,6 +22,7 @@ use App\BusProNet\Model\Travel;
 use App\BusProNet\XmlParser\ApiResponseParser;
 use App\Form\Model\BookingDto;
 use App\Form\Model\RegistrationDto;
+use App\Service\RequestIdGenerator;
 use League\Flysystem\FilesystemException;
 use League\Flysystem\FilesystemOperator;
 use Psr\Log\LoggerInterface;
@@ -58,6 +59,7 @@ class ApiClient
         private readonly LoggerInterface $logger,
         private readonly BookingDataProcessor $bookingDataProcessor,
         private readonly RequestStack $requestStack,
+        private readonly RequestIdGenerator $requestIdGenerator,
         array $options,
     ) {
         $this->config = $this->resolveOptions($options);
@@ -762,7 +764,7 @@ class ApiClient
     private function getRequestId(): string
     {
         $baseId = $this->requestStack->getMainRequest()?->attributes->get('request_id')
-            ?? date(DATE_ATOM);
+            ?? $this->requestIdGenerator->generateBaseId();
 
         return $baseId.'_'.++$this->requestCounter;
     }

src/EventListener/RequestIdListener.php

@@ -4,6 +4,7 @@ declare(strict_types=1);
 
 namespace App\EventListener;
 
+use App\Service\RequestIdGenerator;
 use Symfony\Component\EventDispatcher\Attribute\AsEventListener;
 use Symfony\Component\HttpKernel\Event\RequestEvent;
 use Symfony\Component\HttpKernel\KernelEvents;
@@ -11,13 +12,18 @@ use Symfony\Component\HttpKernel\KernelEvents;
 #[AsEventListener(event: KernelEvents::REQUEST, priority: 255)]
 class RequestIdListener
 {
+    public function __construct(
+        private readonly RequestIdGenerator $requestIdGenerator,
+    ) {
+    }
+
     public function __invoke(RequestEvent $event): void
     {
         if (false === $event->isMainRequest()) {
             return;
         }
 
-        $requestId = date(DATE_ATOM).uniqid();
+        $requestId = $this->requestIdGenerator->generateBaseId();
         $event->getRequest()->attributes->set('request_id', $requestId);
     }
 }

src/Service/RequestIdGenerator.php

@@ -0,0 +1,22 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Service;
+
+class RequestIdGenerator
+{
+    private const TIMESTAMP_LENGTH = 10;
+    private const RANDOM_LENGTH = 8;
+
+    public function generateBaseId(): string
+    {
+        $timestampMs = (int) floor(microtime(true) * 1000);
+        $timestampPart = str_pad(base_convert((string) $timestampMs, 10, 36), self::TIMESTAMP_LENGTH, '0', STR_PAD_LEFT);
+
+        $maxRandomValue = (36 ** self::RANDOM_LENGTH) - 1;
+        $randomPart = str_pad(base_convert((string) random_int(0, $maxRandomValue), 10, 36), self::RANDOM_LENGTH, '0', STR_PAD_LEFT);
+
+        return sprintf('r-%s-%s', $timestampPart, $randomPart);
+    }
+}