MigrateMessage.php

<?php

namespace Drupal\migrate;

use Drupal\Core\Logger\RfcLogLevel;

/**
 * Defines a migrate message class.
 */
class MigrateMessage implements MigrateMessageInterface {
    
    /**
     * The map between migrate status and watchdog severity.
     *
     * @var array
     */
    protected $map = [
        'status' => RfcLogLevel::INFO,
        'error' => RfcLogLevel::ERROR,
    ];
    
    /**
     * {@inheritdoc}
     */
    public function display($message, $type = 'status') {
        $type = $this->map[$type] ?? RfcLogLevel::NOTICE;
        \Drupal::logger('migrate')->log($type, $message);
    }

}