By yesct on
Change record status: 
Published (View all published change records)
Project: 
Drupal core
Introduced in branch: 
8.x
Issue links: 
https://www.drupal.org/node/1795186
https://www.drupal.org/node/1875086
Description: 

The Flood API is now a service. There is a Drupal\Core\Flood\FloodInterface with a default implementation that uses the database.

The implementation can be accessed through Drupal::flood(). The service provides the methods isAllowed(), register() and clear(), which directly map to the previous functions.

Drupal 7

// Check if an event is allowed.
flood_is_allowed('mymodule.event', $limit, $interval, $identifier);

// Register an event.
flood_register_event('mymodule.event', $interval, $identifier);

// Clear a flood event.
flood_clear_event('mymodule.event', $identifier);

Drupal 8

// Check if an event is allowed.
Drupal::flood()->isAllowed('mymodule.event', $limit, $interval, $identifier);

// Register an event.
Drupal::flood()->register('mymodule.event', $interval, $identifier);

// Clear a flood event.
Drupal::flood()->clear('mymodule.event', $identifier);

Just like before, $identifier defaults to the current IP address and $interval defaults to one hour.

Impacts: 
Module developers