List tasks ahead of a task

List the tasks in front of task_id in the queue. If the task is missing from the queue this will return NULL. If the task is next in the queue this will return an empty character vector.

Usage

rrq_task_preceeding(task_id, queue = NULL, follow = NULL, controller = NULL)

Arguments

task_id

Task to find the position for.

queue

The name of the queue to query (defaults to the "default" queue).

follow

Optional logical, indicating if we should follow any redirects set up by doing rrq_task_retry. If not given, falls back on the value passed into the controller, the global option rrq.follow, and finally TRUE. Set to FALSE if you want to return information about the original task, even if it has been subsequently retried.

controller

The controller to use. If not given (or NULL) we'll use the controller registered with rrq_default_controller_set().