* Fix race with heartbeat and reaper logic
* Fix tests to fail when over drift over heartbeat time
* replaced modified with started time for reap() code and added test
* fixed logic bug and cleaned up tests
* Added comments to tests to call out reasoning
Avoid running jobs that have already been reapted
Co-authored-by: Elijah DeLee <kdelee@redhat.com>
Remove unnecessary extra actions
Fix waiting jobs in other cases of reaping
* Reap jobs on dispatcher startup to increase clarity, replace existing reaping logic
* Exit jobs if receiving SIGTERM signal
* Fix unwanted reaping on shutdown, let subprocess close out
* Add some sanity tests for signal module
* Add a log for an unhandled dispatcher error
* Refine wording of error messages
Co-authored-by: Elijah DeLee <kdelee@redhat.com>
this is a simple sanity check, but it should help us avoid shooting
ourselves in the foot in complicated scenarios, such as:
1. A dispatcher worker is running a job, and it's killed with `kill -9`
2. The dispatcher attempts to reap jobs with a matching celery_task_id
3. The associated sync project update has the *same* celery_task_id
(an implementation detail of how we implemented that), and it ends
up getting reaped _even though_ it's already finished and has
status=successful
this commit implements the bulk of `awx-manage run_dispatcher`, a new
command that binds to RabbitMQ via kombu and balances messages across
a pool of workers that are similar to celeryd workers in spirit.
Specifically, this includes:
- a new decorator, `awx.main.dispatch.task`, which can be used to
decorate functions or classes so that they can be designated as
"Tasks"
- support for fanout/broadcast tasks (at this point in time, only
`conf.Setting` memcached flushes use this functionality)
- support for job reaping
- support for success/failure hooks for job runs (i.e.,
`handle_work_success` and `handle_work_error`)
- support for auto scaling worker pool that scale processes up and down
on demand
- minimal support for RPC, such as status checks and pool recycle/reload
