This greatly reduces run time on large inventories since meta tasks are
executed in the main process sequentially and just executing them is expensive.
This change avoids running the following implicit meta tasks:
* ``flush_handlers`` on hosts where no handlers are notified
* ``noop`` for the linear strategy's lockstep, instead hosts that are
not executing the current task are just not part of the current host loop
A playbook consiting of two simple plays both running on ~6000 hosts
runs in:
devel: 37s
this PR: 1.3s
Co-authored-by: Sloane Hertel <19572925+s-hertel@users.noreply.github.com>
Co-authored-by: Sviatoslav Sydorenko (Святослав Сидоренко) <wk.cvs.github@sydorenko.org.ua>
This fixes the issue where handlers notifying other handlers are
not properly run because the notification is not registered unless
another flush_handlers occurs. Instead, if the current host state
is iterating handlers we immediately register the handler to be
run so the notification is not lost.
Fixes#80880
Fixes#73643
* clear_notification method and simplify ifs
* Deduplicate code
* Limit number of Templar creations
* Fix sanity
* Preserve handler callbacks order as they were notified
* Make undefined variables in handler names non-fatal if the handler is not used
* If the handler has no way to be notified (i.e. the name can't be templated and the handler has no listen topics), display a warning
* Add tests for variables in handler names
* changelog
* free strategy - include failed hosts that were notified so --force-handlers is used
* trim line length a bit
* Loop over the force handler tests with the strategies linear and free
* rename changelog
* Use the play iterator instead of TQM for accurate failure representation in blocks
* Remove hack in a backwards compatible way for 3rd party plugins
* Fix notifying handlers by using an exact match rather than a string subset if listen is text rather than a list
* Enforce better type checking for listeners
* Share code for validating handler listeners
* Add test for handlers without names
* Add test for templating in handlers
* Add test for include_role
* Add a couple notes about 'listen' for handlers
* changelog
* Add a test for handlers without names
* Test templating in handlers
* changelog
* Add some tests for include_role
* Add a couple notes about 'listen' for handlers
* make more sense
* move local function into a class method
* Ensure that include_role properly fires handlers
include_role needs to ensure that any handlers included
with the role are added to the _notified_handler and
_listening_handler lists of the TaskQueueManager, otherwise
it fails when trying to run the handler.
Additionally, the handler needs to be added to the
PlayIterator's `_uuid_cache` or it fails after running
the handler
Add more uuid debug statements - this code was hard
to debug with existing debug statements, so add more
uuid information at little additional output cost.
Fixes#18411
* Add tests for include_role handlers
Tests for #18411
Martin Krizek