EventBase.php

<?php

namespace Drupal\migrate\Event;

use Drupal\migrate\Plugin\MigrationInterface;
use Drupal\migrate\MigrateMessageInterface;
use Drupal\Component\EventDispatcher\Event;
class EventBase extends Event {
    
    /**
     * The migration.
     *
     * @var \Drupal\migrate\Plugin\MigrationInterface
     */
    protected $migration;
    
    /**
     * The current message service.
     *
     * @var \Drupal\migrate\MigrateMessageInterface
     */
    protected $message;
    
    /**
     * Constructs a Migrate event object.
     *
     * @param \Drupal\migrate\Plugin\MigrationInterface $migration
     *   The migration being run.
     * @param \Drupal\migrate\MigrateMessageInterface $message
     *   The Migrate message service.
     */
    public function __construct(MigrationInterface $migration, MigrateMessageInterface $message) {
        $this->migration = $migration;
        $this->message = $message;
    }
    
    /**
     * Gets the migration.
     *
     * @return \Drupal\migrate\Plugin\MigrationInterface
     *   The migration being run.
     */
    public function getMigration() {
        return $this->migration;
    }
    
    /**
     * Logs a message using the Migrate message service.
     *
     * @param string $message
     *   The message to log.
     * @param string $type
     *   The type of message, for example: status or warning.
     */
    public function logMessage($message, $type = 'status') {
        $this->message
            ->display($message, $type);
    }

}