rules.module

<?php

/**
 * @file
 * Hook implementations for the Rules module.
 */

use Drupal\Core\Entity\ContentEntityInterface;
use Drupal\Core\Entity\Display\EntityViewDisplayInterface;
use Drupal\Core\Entity\EntityInterface;
use Drupal\rules\Event\EntityEvent;
use Drupal\rules\Event\UserLoginEvent;
use Drupal\rules\Event\UserLogoutEvent;

/**
 * Implements hook_user_login().
 */
function rules_user_login($account) {
  // Set the account twice on the event: as the main subject but also in the
  // list of arguments.
  $event = new UserLoginEvent($account, ['account' => $account]);
  $event_dispatcher = \Drupal::service('event_dispatcher');
  $event_dispatcher->dispatch(UserLoginEvent::EVENT_NAME, $event);
}

/**
 * Implements hook_user_logout().
 */
function rules_user_logout($account) {
  // Set the account twice on the event: as the main subject but also in the
  // list of arguments.
  $event = new UserLogoutEvent($account, ['account' => $account]);
  $event_dispatcher = \Drupal::service('event_dispatcher');
  $event_dispatcher->dispatch(UserLogoutEvent::EVENT_NAME, $event);
}

/**
 * Implements hook_entity_view().
 */
function rules_entity_view(array &$build, EntityInterface $entity, EntityViewDisplayInterface $display, $view_mode, $langcode) {
  // Only handle content entities and ignore config entities.
  if ($entity instanceof ContentEntityInterface) {
    $entity_type_id = $entity->getEntityTypeId();
    $event = new EntityEvent($entity, [$entity_type_id => $entity]);
    $event_dispatcher = \Drupal::service('event_dispatcher');
    $event_dispatcher->dispatch("rules_entity_view:$entity_type_id", $event);
  }
}

/**
 * Implements hook_entity_presave().
 */
function rules_entity_presave(EntityInterface $entity) {
  // Only handle content entities and ignore config entities.
  if ($entity instanceof ContentEntityInterface) {
    $entity_type_id = $entity->getEntityTypeId();
    $event = new EntityEvent($entity, [$entity_type_id => $entity]);
    $event_dispatcher = \Drupal::service('event_dispatcher');
    $event_dispatcher->dispatch("rules_entity_presave:$entity_type_id", $event);
  }
}

/**
 * Implements hook_entity_delete().
 */
function rules_entity_delete(EntityInterface $entity) {
  // Only handle content entities and ignore config entities.
  if ($entity instanceof ContentEntityInterface) {
    $entity_type_id = $entity->getEntityTypeId();
    $event = new EntityEvent($entity, [$entity_type_id => $entity]);
    $event_dispatcher = \Drupal::service('event_dispatcher');
    $event_dispatcher->dispatch("rules_entity_delete:$entity_type_id", $event);
  }
}

/**
 * Implements hook_entity_insert().
 */
function rules_entity_insert(EntityInterface $entity) {
  // Only handle content entities and ignore config entities.
  if ($entity instanceof ContentEntityInterface) {
    $entity_type_id = $entity->getEntityTypeId();
    $event = new EntityEvent($entity, [$entity_type_id => $entity]);
    $event_dispatcher = \Drupal::service('event_dispatcher');
    $event_dispatcher->dispatch("rules_entity_insert:$entity_type_id", $event);
  }
}

/**
 * Implements hook_entity_update().
 */
function rules_entity_update(EntityInterface $entity) {
  // Only handle content entities and ignore config entities.
  if ($entity instanceof ContentEntityInterface) {
    $entity_type_id = $entity->getEntityTypeId();
    $event = new EntityEvent($entity, [$entity_type_id => $entity]);
    $event_dispatcher = \Drupal::service('event_dispatcher');
    $event_dispatcher->dispatch("rules_entity_update:$entity_type_id", $event);
  }
}