display: fix log verbosity (#83179)

* display, ensure we have a logger before we log

changelogs/fragments/fix_log_verbosity.yml

@@ -0,0 +1,2 @@
+bugfixes:
+  - ensure we have logger before we log when we have increased verbosity.

lib/ansible/utils/display.py

@@ -451,7 +451,7 @@ class Display(metaclass=Singleton):
 
     def _log(self, msg: str, color: str | None = None, caplevel: int | None = None):
 
-        if caplevel is None or self.log_verbosity > caplevel:
+        if logger and (caplevel is None or self.log_verbosity > caplevel):
             msg2 = msg.lstrip('\n')
 
             lvl = logging.INFO
@@ -462,6 +462,7 @@ class Display(metaclass=Singleton):
                 except KeyError:
                     # this should not happen, but JIC
                     raise AnsibleAssertionError('Invalid color supplied to display: %s' % color)
+
             # actually log
             logger.log(lvl, msg2)
 

test/integration/targets/ansible_log/runme.sh

@@ -21,3 +21,6 @@ if [ "$rc" == "0" ]; then
     false  # fail if we found EXEC in stdout
 fi
 grep -q EXEC "${ALOG}"
+
+# Test that setting verbosity with no log won't crash
+ANSIBLE_LOG_VERBOSITY=2 ansible-playbook logit.yml