[bug] Logic fix for plugins (#9934)

* Logic fix for plugins

- Prevent tasks being run for disabled plugins

* Adjust default value for "get_plugin" method

* Fix return type

* Update typing

* Tweak unit test

* Update unit tests

* More test updates

src/backend/InvenTree/InvenTree/exchange.py

@@ -30,7 +30,7 @@ class InvenTreeExchange(SimpleExchangeBackend):
         # Find the selected exchange rate plugin
         slug = get_global_setting('CURRENCY_UPDATE_PLUGIN', create=False)
 
-        plugin = registry.get_plugin(slug) if slug else None
+        plugin = registry.get_plugin(slug, active=True) if slug else None
 
         if not plugin:
             # Find the first active currency exchange plugin

src/backend/InvenTree/data_exporter/tasks.py

@@ -35,7 +35,7 @@ def export_data(
     """
     from plugin import registry
 
-    if (plugin := registry.get_plugin(plugin_key)) is None:
+    if (plugin := registry.get_plugin(plugin_key, active=True)) is None:
         logger.warning("export_data: Plugin '%s' not found", plugin_key)
         return
 

src/backend/InvenTree/plugin/base/event/events.py

@@ -105,10 +105,10 @@ def process_event(plugin_slug, event, *args, **kwargs):
     This function is run by the background worker process.
     This function may queue multiple functions to be handled by the background worker.
     """
-    plugin = registry.get_plugin(plugin_slug)
+    plugin = registry.get_plugin(plugin_slug, active=True)
 
     if plugin is None:  # pragma: no cover
-        logger.error("Could not find matching plugin for '%s'", plugin_slug)
+        logger.error("Could not find matching active plugin for '%s'", plugin_slug)
         return
 
     logger.debug("Plugin '%s' is processing triggered event '%s'", plugin_slug, event)

src/backend/InvenTree/plugin/base/label/label.py

@@ -26,10 +26,10 @@ def print_label(plugin_slug: str, **kwargs):
     """
     logger.info("Plugin '%s' is printing a label", plugin_slug)
 
-    plugin = registry.get_plugin(plugin_slug)
+    plugin = registry.get_plugin(plugin_slug, active=True)
 
     if plugin is None:  # pragma: no cover
-        logger.error("Could not find matching plugin for '%s'", plugin_slug)
+        logger.error("Could not find matching active plugin for '%s'", plugin_slug)
         return
 
     try:

src/backend/InvenTree/plugin/base/label/test_label_mixin.py

@@ -124,7 +124,7 @@ class LabelMixinTests(PrintTestMixins, InvenTreeAPITestCase):
         plugins = registry.with_mixin(PluginMixinEnum.LABELS)
         self.assertGreater(len(plugins), 0)
 
-        plugin = registry.get_plugin('samplelabelprinter')
+        plugin = registry.get_plugin('samplelabelprinter', active=None)
         self.assertIsNotNone(plugin)
         config = plugin.plugin_config()
 

src/backend/InvenTree/plugin/base/locate/test_locate.py

@@ -16,9 +16,7 @@ class LocatePluginTests(InvenTreeAPITestCase):
         super().setUp()
 
         # Activate plugin
-        config = registry.get_plugin('samplelocate').plugin_config()
+        registry.set_plugin_state('samplelocate', True)
-        config.active = True
-        config.save()
 
     fixtures = ['category', 'part', 'location', 'stock']
 

src/backend/InvenTree/plugin/registry.py

@@ -101,16 +101,18 @@ class PluginsRegistry:
         self.installed_apps = []  # Holds all added plugin_paths
 
     @property
-    def is_loading(self):
+    def is_loading(self) -> bool:
         """Return True if the plugin registry is currently loading."""
         return self.loading_lock.locked()
 
-    def get_plugin(self, slug, active=None, with_mixin=None):
+    def get_plugin(
+        self, slug: str, active: bool = True, with_mixin: Optional[str] = None
+    ) -> InvenTreePlugin:
         """Lookup plugin by slug (unique key).
 
         Args:
             slug (str): The slug of the plugin to look up.
-            active (bool, optional): Filter by 'active' status of the plugin. If None, no filtering is applied. Defaults to None.
+            active (bool, optional): Filter by 'active' status of the plugin. If None, no filtering is applied. Defaults to True.
             with_mixin (str, optional): Filter by mixin name. If None, no filtering is applied. Defaults to None.
 
         Returns:
@@ -136,7 +138,7 @@ class PluginsRegistry:
     def get_plugin_config(self, slug: str, name: Union[str, None] = None):
         """Return the matching PluginConfig instance for a given plugin.
 
-        Args:
+        Arguments:
             slug: The plugin slug
             name: The plugin name (optional)
         """
@@ -167,10 +169,10 @@ class PluginsRegistry:
 
         return cfg
 
-    def set_plugin_state(self, slug, state):
+    def set_plugin_state(self, slug: str, state: bool):
         """Set the state(active/inactive) of a plugin.
 
-        Args:
+        Arguments:
             slug (str): Plugin slug
             state (bool): Plugin state - true = active, false = inactive
         """
@@ -374,7 +376,7 @@ class PluginsRegistry:
             # Ensure the lock is released always
             self.loading_lock.release()
 
-    def plugin_dirs(self):
+    def plugin_dirs(self) -> list[str]:
         """Construct a list of directories from where plugins can be loaded."""
         # Builtin plugins are *always* loaded
         dirs = ['plugin.builtin']

src/backend/InvenTree/plugin/samples/event/test_event_sample.py

@@ -15,9 +15,7 @@ class EventPluginSampleTests(TestCase):
     def test_run_event(self):
         """Check if the event is issued."""
         # Activate plugin
-        config = registry.get_plugin('sampleevent').plugin_config()
+        registry.set_plugin_state('sampleevent', True)
-        config.active = True
-        config.save()
 
         InvenTreeSetting.set_setting('ENABLE_PLUGINS_EVENTS', True, change_user=None)
 

src/backend/InvenTree/plugin/samples/event/test_filtered_event_sample.py

@@ -13,9 +13,7 @@ class FilteredEventPluginSampleTests(TestCase):
     def test_run_event(self):
         """Check if the event is issued."""
         # Activate plugin
-        config = registry.get_plugin('filteredsampleevent').plugin_config()
+        registry.set_plugin_state('filteredsampleevent', True)
-        config.active = True
-        config.save()
 
         InvenTreeSetting.set_setting('ENABLE_PLUGINS_EVENTS', True, change_user=None)
 
@@ -29,9 +27,7 @@ class FilteredEventPluginSampleTests(TestCase):
     def test_ignore_event(self):
         """Check if the event is issued."""
         # Activate plugin
-        config = registry.get_plugin('filteredsampleevent').plugin_config()
+        registry.set_plugin_state('filteredsampleevent', True)
-        config.active = True
-        config.save()
 
         InvenTreeSetting.set_setting('ENABLE_PLUGINS_EVENTS', True, change_user=None)
 

src/backend/InvenTree/plugin/samples/icons/test_icon_sample.py

@@ -14,9 +14,7 @@ class SampleIconPackPluginTests(InvenTreeAPITestCase):
     def test_get_icons_api(self):
         """Check get icons api."""
         # Activate plugin
-        config = registry.get_plugin('sampleicons').plugin_config()
+        registry.set_plugin_state('sampleicons', True)
-        config.active = True
-        config.save()
 
         response = self.get(reverse('api-icon-list'), expected_code=200)
         self.assertEqual(len(response.data), 2)

src/backend/InvenTree/plugin/samples/integration/test_sample.py

@@ -45,6 +45,7 @@ class SampleIntegrationPluginTests(InvenTreeTestCase):
 
     def test_settings(self):
         """Check the SettingsMixin.check_settings function."""
+        registry.set_plugin_state('sample', True)
         plugin = registry.get_plugin('sample')
         self.assertIsNotNone(plugin)
 
@@ -57,13 +58,19 @@ class SampleIntegrationPluginTests(InvenTreeTestCase):
 
     def test_settings_validator(self):
         """Test settings validator for plugins."""
+        registry.set_plugin_state('sample', False)
+        self.assertIsNone(registry.get_plugin('sample'))
+
+        registry.set_plugin_state('sample', True)
         plugin = registry.get_plugin('sample')
+        self.assertIsNotNone(plugin)
+
         valid_json = '{"ts": 13}'
         not_valid_json = '{"ts""13"}'
 
         # no error, should pass validator
         plugin.set_setting('VALIDATOR_SETTING', valid_json)
 
-        # should throw an error
+        # This should throw an error
         with self.assertRaises(ValidationError):
             plugin.set_setting('VALIDATOR_SETTING', not_valid_json)

src/backend/InvenTree/plugin/samples/integration/test_scheduled_task.py

@@ -76,7 +76,15 @@ class ExampleScheduledTaskPluginTests(TestCase):
 
     def test_calling(self):
         """Test calling of plugin functions by name."""
-        # Check with right parameters
+        # First, plugin is *not* enabled
+        registry.set_plugin_state('schedule', False)
+
+        with self.assertRaises(AttributeError):
+            self.assertEqual(call_plugin_function('schedule', 'member_func'), False)
+
+        registry.set_plugin_state('schedule', True)
+
+        # Should work now
         self.assertEqual(call_plugin_function('schedule', 'member_func'), False)
 
         # Check with wrong key

src/backend/InvenTree/plugin/samples/locate/test_locate_sample.py

@@ -8,7 +8,7 @@ from plugin.helpers import MixinNotImplementedError
 from plugin.mixins import LocateMixin
 
 
-class SampleLocatePlugintests(InvenTreeAPITestCase):
+class SampleLocatePluginTests(InvenTreeAPITestCase):
     """Tests for SampleLocatePlugin."""
 
     fixtures = ['location', 'category', 'part', 'stock']
@@ -16,7 +16,7 @@ class SampleLocatePlugintests(InvenTreeAPITestCase):
     def test_run_locator(self):
         """Check if the event is issued."""
         # Activate plugin
-        config = registry.get_plugin('samplelocate').plugin_config()
+        config = registry.get_plugin('samplelocate', active=None).plugin_config()
         config.active = True
         config.save()
 

src/backend/InvenTree/plugin/samples/mail/test_mail_sample.py

@@ -15,7 +15,7 @@ class MailPluginSampleTests(TestCase):
 
     def activate_plugin(self):
         """Activate the sample mail plugin."""
-        config = registry.get_plugin('samplemail').plugin_config()
+        config = registry.get_plugin('samplemail', active=None).plugin_config()
         config.active = True
         config.save()
 

src/backend/InvenTree/plugin/test_plugin.py

@@ -217,6 +217,7 @@ class RegistryTests(TestCase):
         with mock.patch.dict(os.environ, envs):
             # Reload to rediscover plugins
             registry.reload_plugins(full_reload=True, collect=True)
+            registry.set_plugin_state('simple', True)
 
             # Depends on the meta set in InvenTree/plugin/mock/simple:SimplePlugin
             plg = registry.get_plugin('simple')
@@ -264,7 +265,7 @@ class RegistryTests(TestCase):
         registry.reload_plugins(full_reload=True, collect=True)
 
         # Test that plugin was installed
-        plg = registry.get_plugin('zapier')
+        plg = registry.get_plugin('zapier', active=None)
         self.assertEqual(plg.slug, 'zapier')
         self.assertEqual(plg.name, 'inventree_zapier')
 

src/backend/InvenTree/report/tasks.py

@@ -68,7 +68,7 @@ def print_labels(
     model = template.get_model()
     items = model.objects.filter(pk__in=item_ids)
 
-    plugin = registry.get_plugin(plugin_slug)
+    plugin = registry.get_plugin(plugin_slug, active=True)
 
     if not plugin:
         logger.warning("Label printing plugin '%s' not found", plugin_slug)

src/backend/InvenTree/report/tests.py

@@ -357,12 +357,9 @@ class PrintTestMixins:
 
     def do_activate_plugin(self):
         """Activate the 'samplelabel' plugin."""
+        registry.set_plugin_state(self.plugin_ref, True)
         plugin = registry.get_plugin(self.plugin_ref)
         self.assertIsNotNone(plugin)
-        config = plugin.plugin_config()
-        self.assertIsNotNone(config)
-        config.active = True
-        config.save()
 
     def run_print_test(self, qs, model_type, label: bool = True):
         """Run tests on single and multiple page printing.