ADO-313: prevents purchase event from triggering multiple times for same purchase

Author: priyambad

app/code/Meta/Conversion/Model/CapiTracker.php

@@ -7,6 +7,7 @@
 use Magento\Customer\Model\Session as CustomerSession;
 use Magento\Framework\Serialize\Serializer\Json as JsonSerializer;
 use Magento\Framework\MessageQueue\PublisherInterface;
+use Meta\Conversion\Model\Tracker\Purchase;
 
 class CapiTracker
 {
@@ -27,6 +28,11 @@ public function __construct(
     public function execute(array $payload, string $eventName, string $eventType, bool $useSessionForEventIds = false): void
     {
         if (isset($payload)) {
+            // Purchase event is triggered twice sometimes, to prevent that check if event id is already stored for current request
+            // if it does prevent the message form being added to the message queue.
+            if ((Purchase::EVENT_TYPE == $eventType) && $this->capiEventIdHandler->getMetaEventId($eventName)) {
+                return;
+            }
             $eventId = $this->generateEventId($eventName, $useSessionForEventIds);
             $payload['event_id'] = $eventId;
             $payload['event_type'] = $eventType;

app/code/Meta/Conversion/Model/Tracker/Purchase.php

@@ -22,7 +22,7 @@
 
 class Purchase implements TrackerInterface
 {
-    private const EVENT_TYPE = "Purchase";
+    public const EVENT_TYPE = "Purchase";
     /**
      * @var FBEHelper
      */