Task improvements (#5159)

* Ignore triggered events if plugin events are not enabled

* Ensure that plugin tasks are handled by the background worker

* Allow shell access

* Don't force async if testing

* Enable plugin events as part of CI

* fix

InvenTree/plugin/base/event/events.py

@@ -20,17 +20,27 @@ def trigger_event(event, *args, **kwargs):
     This event will be stored in the database,
     and the worker will respond to it later on.
     """
+    from common.models import InvenTreeSetting
+
     if not settings.PLUGINS_ENABLED:
         # Do nothing if plugins are not enabled
         return  # pragma: no cover
 
+    if not InvenTreeSetting.get_setting('ENABLE_PLUGINS_EVENTS', False):
+        # Do nothing if plugin events are not enabled
+        return
+
     # Make sure the database can be accessed and is not being tested rn
-    if not canAppAccessDatabase() and not settings.PLUGIN_TESTING_EVENTS:
+    if not canAppAccessDatabase(allow_shell=True) and not settings.PLUGIN_TESTING_EVENTS:
         logger.debug(f"Ignoring triggered event '{event}' - database not ready")
         return
 
     logger.debug(f"Event triggered: '{event}'")
 
+    # By default, force the event to be processed asynchronously
+    if 'force_async' not in kwargs and not settings.PLUGIN_TESTING_EVENTS:
+        kwargs['force_async'] = True
+
     offload_task(
         register_event,
         event,
@@ -63,6 +73,11 @@ def register_event(event, *args, **kwargs):
 
                         logger.debug(f"Registering callback for plugin '{slug}'")
 
+                        # This task *must* be processed by the background worker,
+                        # unless we are running CI tests
+                        if 'force_async' not in kwargs and not settings.PLUGIN_TESTING_EVENTS:
+                            kwargs['force_async'] = True
+
                         # Offload a separate task for each plugin
                         offload_task(
                             process_event,

InvenTree/plugin/samples/event/test_event_sample.py

@@ -3,6 +3,7 @@
 from django.conf import settings
 from django.test import TestCase
 
+from common.models import InvenTreeSetting
 from plugin import InvenTreePlugin, registry
 from plugin.base.event.events import trigger_event
 from plugin.helpers import MixinNotImplementedError
@@ -21,6 +22,8 @@ class EventPluginSampleTests(TestCase):
         config.active = True
         config.save()
 
+        InvenTreeSetting.set_setting('ENABLE_PLUGINS_EVENTS', True, change_user=None)
+
         # Enable event testing
         settings.PLUGIN_TESTING_EVENTS = True
         # Check that an event is issued