--- /dev/null
+<?php
+
+namespace Drupal\system\Plugin\migrate\source;
+
+use Drupal\migrate_drupal\Plugin\migrate\source\DrupalSqlBase;
+
+/**
+ * Menu source from database.
+ *
+ * @MigrateSource(
+ * id = "menu",
+ * source_provider = "menu"
+ * )
+ */
+class Menu extends DrupalSqlBase {
+
+ /**
+ * {@inheritdoc}
+ */
+ public function query() {
+ return $this->select('menu_custom', 'm')->fields('m');
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function fields() {
+ return [
+ 'menu_name' => $this->t('The menu name. Primary key.'),
+ 'title' => $this->t('The human-readable name of the menu.'),
+ 'description' => $this->t('A description of the menu'),
+ ];
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getIds() {
+ $ids['menu_name']['type'] = 'string';
+ return $ids;
+ }
+
+}