Why are final prices missing on larger product exports? - php

Question

The requirement is to fix the final price export in Magento 2.4.2. The issue is as follows:
We want to export product data into a CSV. We also want to export the final prices of the products. For that, an after Plugin is supposed to take the exported array and add an additional column for the final price before it gets handed to the file writing logic of the export.
The Plugin works as follows:
use Magento\Catalog\Api\Data\ProductExtensionInterface;
use Magento\Catalog\Api\ProductRepositoryInterface;
use Magento\Catalog\Model\Product\Type\Price;
use Magento\Catalog\Model\Product;
use Magento\Catalog\Model\ResourceModel\Product as ResourceModel;
use Magento\Framework\Exception\NoSuchEntityException;
use Firebear\ImportExport\Model\Export\Product as FirebearProduct;
class AfterGetExportDataPlugin
{
public const FINAL_PRICE_EXPORT = 'export_finalPrice';
private ResourceModel $resourceModel;
private ProductRepositoryInterface $productRepository;
private Price $price;
public function __construct(
ResourceModel $resourceModel,
ProductRepositoryInterface $productRepository,
Price $price
) {
$this->resourceModel = $resourceModel;
$this->productRepository = $productRepository;
$this->price = $price;
}
/**
* #param FirebearProduct $subject
* #param array $result
* #return array
* #throws NoSuchEntityException
*/
public function afterGetExportData(FirebearProduct $subject, array $result)
{
// Evaluate if final price is a selected attribute for the export
$additionalColumns = $subject->getParameters()['list'];
if (false === in_array(self::FINAL_PRICE_EXPORT, $additionalColumns, true)) {
return $result;
}
// Evaluate if an alias for final price is set
$exportAttributeMapping = self::FINAL_PRICE_EXPORT;
for ($i = 0; $i < $additionalColumns; $i++) {
if ($additionalColumns[$i] === self::FINAL_PRICE_EXPORT) {
$exportAttributeMapping = $subject->getParameters()['replace_code'][$i];
break 1;
}
}
return array_map(function ($product) use ($exportAttributeMapping) {
/** #var Product $productEntity */
$productEntity = $this->productRepository->get((string) $product['sku']);
$product[$exportAttributeMapping] = (float) $this->price->getFinalPrice(1, $productEntity);
return $product;
}, $result);
}
}
I tested that with 5000 products on my development environment and the export went well. But when we exported 400000 products on our staging environment, the majority of final prices were missing.
I can't figure out why that is. Does anyone how or why that happens?
FYI: We use the Firebear export extension but I don't think it matters that much in this context.