Reliable queue interface.

Classes implementing this interface preserve the order of messages and guarantee that every item will be executed at least once.

Implemented by

Hierarchy

Expanded class hierarchy of BackdropReliableQueueInterface

Related topics

File

core/modules/system/system.queue.inc, line 191
Queue functionality.

Members

Contains filters are case sensitive
Name Modifierssort descending Type Description
BackdropQueueInterface::createItem public function Add a queue item and store it directly to the queue.
BackdropQueueInterface::numberOfItems public function Retrieve the number of items in the queue.
BackdropQueueInterface::claimItem public function Claim an item in the queue for processing.
BackdropQueueInterface::deleteItem public function Delete a finished item from the queue.
BackdropQueueInterface::releaseItem public function Release an item that the worker could not process, so another worker can come in and process it before the timeout expires.
BackdropQueueInterface::createQueue public function Create a queue.
BackdropQueueInterface::deleteQueue public function Delete a queue and every item in the queue.