MigrateMessageCapture.php

<?php

namespace Drupal\migrate_drupal_ui\Batch;

use Drupal\migrate\MigrateMessageInterface;

/**
 * Allows capturing messages rather than displaying them directly.
 */
class MigrateMessageCapture implements MigrateMessageInterface {
    
    /**
     * Array of recorded messages.
     *
     * @var array
     */
    protected $messages = [];
    
    /**
     * {@inheritdoc}
     */
    public function display($message, $type = 'status') {
        $this->messages[] = $message;
    }
    
    /**
     * Clears out any captured messages.
     */
    public function clear() {
        $this->messages = [];
    }
    
    /**
     * Returns any captured messages.
     *
     * @return array
     *   The captured messages.
     */
    public function getMessages() {
        return $this->messages;
    }

}