klarna and checkouts

cmd/checkout/klarna-handlers.go

@@ -183,16 +183,20 @@ func (s *CheckoutPoolServer) KlarnaPushHandler(w http.ResponseWriter, r *http.Re
 
 	if s.inventoryService != nil {
 		inventoryRequests := getInventoryRequests(grain.CartState.Items)
-		err = s.inventoryService.ReserveInventory(r.Context(), inventoryRequests...)
-
-		if err != nil {
-			logger.WarnContext(r.Context(), "placeorder inventory reservation failed")
-			w.WriteHeader(http.StatusNotAcceptable)
-			return
+		invStatus := "success"
+		if err = s.inventoryService.ReserveInventory(r.Context(), inventoryRequests...); err != nil {
+			// The payment is already settled at Klarna (checkout_complete), so the
+			// order MUST be created. Inventory is best-effort at this point — a
+			// reservation failure (unstocked / drop-ship / non-tracked items)
+			// must not block order creation. Log it and flag the grain so
+			// fulfillment can reconcile.
+			logger.WarnContext(r.Context(), "klarna push: inventory reservation failed; creating order anyway",
+				"err", err, "checkoutId", grain.Id.String())
+			invStatus = "failed"
 		}
 		s.Apply(r.Context(), uint64(grain.Id), &messages.InventoryReserved{
 			Id:     grain.Id.String(),
-			Status: "success",
+			Status: invStatus,
 		})
 	}