Issue #3308487 Skip exports of shipments that are not shipped yet

    tags:

      - { name: event_subscriber }

  commerce_amws_shipping.shipment_export_local_entity_mapping:

  commerce_amws_shipping.export.shipment_validate:

    class: Drupal\commerce_amws_shipping\EventSubscriber\ShipmentExportValidate

    tags:

      - { name: event_subscriber }

  commerce_amws_shipping.export.shipment_local_entity_mapping:

    class: Drupal\commerce_amws_shipping\EventSubscriber\ShipmentExportLocalEntityMapping

    tags:

      - { name: event_subscriber }

  commerce_amws_shipping.shipment_export_local_entity_terminate:

  commerce_amws_shipping.export.shipment_local_entity_terminate:

    class: Drupal\commerce_amws_shipping\EventSubscriber\ShipmentExportLocalEntityTerminate

    arguments:

      - '@entity_type.manager'

<?php

namespace Drupal\commerce_amws_shipping\EventSubscriber;

use Drupal\commerce_amws_shipping\Plugin\EntitySync\OperationConfigurator\FeedPostOrderFulfillmentData;

use Drupal\entity_sync\Entity\OperationTypeInterface;

use Drupal\entity_sync\Event\PreInitiateOperationEvent;

use Drupal\entity_sync\Export\Event\Events;

use Drupal\entity_sync\MachineName\Field\Operation as OperationField;

use Symfony\Component\EventDispatcher\EventSubscriberInterface;

/**

 * Validates that the shipment has been shipped.

 */

class ShipmentExportValidate implements EventSubscriberInterface {

  /**

   * {@inheritdoc}

   */

  public static function getSubscribedEvents() {

    $events = [

      Events::LOCAL_ENTITY_PRE_INITIATE => ['validate', 0],

    ];

    return $events;

  }

  /**

   * Validates that the shipment being exported is in Shipped state.

   *

   * The Entity Synchronization state manager takes care of triggering the

   * export when a shipment is created and when any of the exportable fields

   * (state and tracking codes) change.

   *

   * The purpose of the export is to send fulfillment data i.e. carrier

   * information and tracking codes to Amazon MWS. If the item has not been

   * shipped there's no information to send and, in fact, the feed submissions

   * will be rejected.

   *

   * If validation here fails, the export operation is cancelled.

   *

   * @param \Drupal\entity_sync\Event\PreInitiateOperationEvent $event

   *   The preinitiate operation event.

   */

  public function validate(PreInitiateOperationEvent $event) {

    $operation_type = $event->getSync();

    if (!$operation_type instanceof OperationTypeInterface) {

      return;

    }

    $plugin = $operation_type->getPlugin();

    if (!$plugin instanceof FeedPostOrderFulfillmentData) {

      return;

    }

    $shipment = $event->getContext()['local_entity'];

    if ($shipment->get(OperationField::STATE)->first()->getId() !== 'shipped') {

      $event->cancel();

    }

  }

}