Compare FQCN also in lockstep logic. Fixes #76782 (#76787)

changelogs/fragments/76782-fqcn-compare-lockstep-strategies.yml

@@ -0,0 +1,4 @@
+bugfixes:
+- default callback - Ensure we compare FQCN also in lockstep logic, to ensure
+  using the FQCN of a strategy plugin triggers the correct behavior in the
+  default callback plugin. (https://github.com/ansible/ansible/issues/76782)

lib/ansible/plugins/callback/default.py

@@ -25,6 +25,7 @@ from ansible import context
 from ansible.playbook.task_include import TaskInclude
 from ansible.plugins.callback import CallbackBase
 from ansible.utils.color import colorize, hostcolor
+from ansible.utils.fqcn import add_internal_fqcns
 
 # These values use ansible.constants for historical reasons, mostly to allow
 # unmodified derivative plugins to work. However, newer options added to the
@@ -177,7 +178,7 @@ class CallbackModule(CallbackBase):
 
         # Preserve task name, as all vars may not be available for templating
         # when we need it later
-        if self._play.strategy in ('free', 'host_pinned'):
+        if self._play.strategy in add_internal_fqcns(('free', 'host_pinned')):
             # Explicitly set to None for strategy free/host_pinned to account for any cached
             # task title from a previous non-free play
             self._last_task_name = None

test/integration/targets/callback_default/callback_default.out.fqcn_free.stdout

@@ -0,0 +1,35 @@
+
+PLAY [nonlockstep] *************************************************************
+
+TASK [command] *****************************************************************
+changed: [testhost10]
+
+TASK [command] *****************************************************************
+changed: [testhost10]
+
+TASK [command] *****************************************************************
+changed: [testhost10]
+
+TASK [command] *****************************************************************
+changed: [testhost11]
+
+TASK [command] *****************************************************************
+changed: [testhost11]
+
+TASK [command] *****************************************************************
+changed: [testhost11]
+
+TASK [command] *****************************************************************
+changed: [testhost12]
+
+TASK [command] *****************************************************************
+changed: [testhost12]
+
+TASK [command] *****************************************************************
+changed: [testhost12]
+
+PLAY RECAP *********************************************************************
+testhost10                 : ok=3    changed=3    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   
+testhost11                 : ok=3    changed=3    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   
+testhost12                 : ok=3    changed=3    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   
+

test/integration/targets/callback_default/runme.sh

@@ -237,4 +237,5 @@ rm -f meta_test.out
 
 # Ensure free/host_pinned non-lockstep strategies display correctly
 diff -u callback_default.out.free.stdout <(ANSIBLE_STRATEGY=free ansible-playbook -i inventory test_non_lockstep.yml 2>/dev/null)
+diff -u callback_default.out.fqcn_free.stdout <(ANSIBLE_STRATEGY=ansible.builtin.free ansible-playbook -i inventory test_non_lockstep.yml 2>/dev/null)
 diff -u callback_default.out.host_pinned.stdout <(ANSIBLE_STRATEGY=host_pinned ansible-playbook -i inventory test_non_lockstep.yml 2>/dev/null)