og.install

<?php

/**
 * @file
 * Install, update, and uninstall functions for the Organic groups module.
 */

use Drupal\Core\Field\BaseFieldDefinition;

/**
 * Implements hook_uninstall().
 */
function og_uninstall() {
  \Drupal::queue('og_orphaned_group_content')->deleteQueue();
  \Drupal::queue('og_orphaned_group_content_cron')->deleteQueue();
}

/**
 * Add a base field to store the group bundle in memberships.
 */
function og_update_8001(&$sandbox) {
  $storage = \Drupal::entityTypeManager()->getStorage('og_membership');

  if (!isset($sandbox['total'])) {
    $storage_definition = BaseFieldDefinition::create('string')
      ->setLabel(t('Group bundle ID'))
      ->setDescription(t('The bundle ID of the group.'));
    \Drupal::entityDefinitionUpdateManager()->installFieldStorageDefinition('entity_bundle', 'og_membership', 'og', $storage_definition);

    $sandbox['#finished'] = 0;
    $sandbox['current'] = 0;
    $sandbox['total'] = $storage->getQuery()->count()->execute();
    $sandbox['batch_size'] = 500;
  }

  // Update the existing memberships to include the group bundle ID.
  $membership_ids = $storage->getQuery()
    ->range($sandbox['current'], $sandbox['batch_size'])
    ->sort('id')
    ->execute();

  /** @var \Drupal\og\Entity\OgMembership $membership */
  foreach ($storage->loadMultiple($membership_ids) as $membership) {
    $group = $membership->getGroup();
    if (!empty($group)) {
      $membership->set('entity_bundle', $group->bundle());
      $membership->save();
    }
    else {
      // The membership is for a group that no longer exists. We cannot no
      // longer retrieve the group bundle ID so the membership cannot be
      // updated. Delete the membership since it is invalid, and inform the
      // user.
      \Drupal::logger('og')->warning('Deleted orphaned membership with ID @id since the group it refers to no longer exists.', [
        '@id' => $membership->id(),
      ]);
      $membership->delete();
    }
  }

  $sandbox['current'] += $sandbox['batch_size'];
  if ($sandbox['current'] >= $sandbox['total']) {
    $sandbox['current'] = $sandbox['total'];
  }
  $sandbox['#finished'] = $sandbox['current'] / $sandbox['total'];

  $message = t('Processed @current of @total memberships (@percentage% complete)', [
    '@current' => $sandbox['current'],
    '@total' => $sandbox['total'],
    '@percentage' => number_format($sandbox['#finished'] * 100, 2),
  ]);

  return $message;
}