[FEATURE] Option to retry a failed task

[eriktelepovsky]

Hi

Is your feature request related to a problem? Please describe.
I'm always frustrated when I need to manually execute a script to retry a failed task. I know there is a possibility to setup a failover and retry strategy, but sometimes it is more suitable to retry the task immediately on demand.

Describe the solution you'd like
It would be great if there is a button in the UI for the failed task to retry it. It would execute the task with the same parameters.

Describe alternatives you've considered
There is a django-celery-results app alternative which I can add a custom action to retry the specific tasks, but flower is much better tool. The only missing thing is the "retry button".

Additional context
Snippet I currently use:

def retry_task(task_id):    
    meta = celery_app.backend.get_task_meta(task_id)
    task = celery_app.tasks[meta['name']]
    task.apply_async(args=meta['args'], kwargs=meta['kwargs'])

Thank you in advance!

[dgarciams2s]

It would be great, really