salt.runners.queue¶

General management and processing of queues.

This runner facilitates interacting with various queue backends such as the included sqlite3 queue or the planned AWS SQS and Redis queues

The queue functions such as insert, delete, and pop can be used for typical management of the queue.

The process_queue function pops the requested number of items from the queue and creates a Salt Event that can then be processed by a Reactor. The process_queue function can be called manually, or can be configured to run on a schedule with the Salt Scheduler or regular system cron. It is also possible to use the peer system to allow a minion to call the runner.

This runner, as well as the Queues system, is not api stable at this time.

There are many things that could potentially be done with queues within Salt. For the time being the focus will be on queueing infrastructure actions on specific minions. The queues generally will be populated with minion IDs. When the process_queue runner function is called events are created on the Salt Event bus that indicate the queue and a list of one or more minion IDs. The reactor is set up to match on event tags for a specific queue and then take infrastructure actions on those minion IDs. These actions might be to delete the minion's key from the master, use salt-cloud to destroy the vm, or some other custom action.

salt.runners.queue.delete(queue, items, backend='sqlite')¶

Delete an item or items from a queue

CLI Example:

salt-run queue.delete myqueue myitem
salt-run queue.delete myqueue myitem backend=sqlite
salt-run queue.delete myqueue "['item1', 'item2', 'item3']"

salt.runners.queue.insert(queue, items, backend='sqlite')¶

Add an item or items to a queue

CLI Example:

salt-run queue.insert myqueue myitem
salt-run queue.insert myqueue "['item1', 'item2', 'item3']"
salt-run queue.insert myqueue myitem backend=sqlite
salt-run queue.insert myqueue "['item1', 'item2', 'item3']" backend=sqlite

salt.runners.queue.list_items(queue, backend='sqlite')¶

List contents of a queue

CLI Example:

salt-run queue.list_items myqueue
salt-run queue.list_items myqueue backend=sqlite

salt.runners.queue.list_length(queue, backend='sqlite')¶

Provide the number of items in a queue

CLI Example:

salt-run queue.list_length myqueue
salt-run queue.list_length myqueue backend=sqlite

salt.runners.queue.list_queues(backend='sqlite')¶

Return a list of Salt Queues on the backend

CLI Example:

salt-run queue.list_queues salt-run queue.list_queues backend=sqlite

salt.runners.queue.pop(queue, quantity=1, backend='sqlite')¶

Pop one or more or all items from a queue

CLI Example:

salt-run queue.pop myqueue
salt-run queue.pop myqueue 6
salt-run queue.pop myqueue all
salt-run queue.pop myqueue 6 backend=sqlite
salt-run queue.pop myqueue all backend=sqlite

salt.runners.queue.process_queue(queue, quantity=1, backend='sqlite')¶

Pop items off a queue and create an event on the Salt event bus to be processed by a Reactor.

CLI Example:

salt-run queue.process_queue myqueue
salt-run queue.process_queue myqueue 6
salt-run queue.process_queue myqueue all backend=sqlite