EntityImageStyle.php

<?php

namespace Drupal\image\Plugin\migrate\destination;

use Drupal\Component\Plugin\Exception\PluginNotFoundException;
use Drupal\migrate\MigrateException;
use Drupal\migrate\Plugin\migrate\destination\EntityConfigBase;
use Drupal\migrate\Row;

/**
 * Entity image style destination.
 *
 * Every migration that uses this destination must have an optional
 * dependency on the d6_file migration to ensure it runs first.
 *
 * @MigrateDestination(
 *   id = "entity:image_style"
 * )
 */
class EntityImageStyle extends EntityConfigBase {
    
    /**
     * {@inheritdoc}
     */
    public function import(Row $row, array $old_destination_id_values = []) {
        $effects = [];
        // Need to set the effects property to null on the row before the ImageStyle
        // is created, this prevents improper effect plugin initialization.
        if ($row->getDestinationProperty('effects')) {
            $effects = $row->getDestinationProperty('effects');
            $row->setDestinationProperty('effects', []);
        }
        
        /** @var \Drupal\image\Entity\ImageStyle $style */
        $style = $this->getEntity($row, $old_destination_id_values);
        // Iterate the effects array so each effect plugin can be initialized.
        // Catch any missing plugin exceptions.
        foreach ($effects as $effect) {
            try {
                $style->addImageEffect($effect);
            } catch (PluginNotFoundException $e) {
                throw new MigrateException($e->getMessage(), 0, $e);
            }
        }
        $style->save();
        return [
            $style->id(),
        ];
    }

}