UserPictureInstance.php

<?php

namespace Drupal\user\Plugin\migrate\source;

use Drupal\migrate_drupal\Plugin\migrate\source\DrupalSqlBase;
use Drupal\migrate\Plugin\migrate\source\DummyQueryTrait;

/**
 * User picture field instance source.
 *
 * @todo Support default picture?
 *
 * @MigrateSource(
 *   id = "user_picture_instance",
 *   source_module = "user"
 * )
 */
class UserPictureInstance extends DrupalSqlBase {
    use DummyQueryTrait;
    
    /**
     * {@inheritdoc}
     */
    public function initializeIterator() {
        return new \ArrayIterator([
            [
                'id' => '',
                'file_directory' => $this->variableGet('user_picture_path', 'pictures'),
                'max_filesize' => $this->variableGet('user_picture_file_size', '30') . 'KB',
                'max_resolution' => $this->variableGet('user_picture_dimensions', '85x85'),
            ],
        ]);
    }
    
    /**
     * {@inheritdoc}
     */
    public function fields() {
        return [
            'file_directory' => 'The directory to store images..',
            'max_filesize' => 'The maximum allowed file size in KBs.',
            'max_resolution' => "The maximum resolution.",
        ];
    }
    
    /**
     * {@inheritdoc}
     */
    public function getIds() {
        $ids['id']['type'] = 'string';
        return $ids;
    }

}