feat: add trigger loader guard

src/ahriman/core/triggers/trigger.py

@@ -36,6 +36,7 @@ class Trigger(LazyLogging):
         CONFIGURATION_SCHEMA(ConfigurationSchema): (class attribute) configuration schema template
         CONFIGURATION_SCHEMA_FALLBACK(str | None): (class attribute) optional fallback option for defining
             configuration schema type used
+        REQUIRES_REPOSITORY(bool): (class attribute) either trigger requires loaded repository or not
         configuration(Configuration): configuration instance
         repository_id(RepositoryId): repository unique identifier
 
@@ -59,6 +60,7 @@ class Trigger(LazyLogging):
 
     CONFIGURATION_SCHEMA: ClassVar[ConfigurationSchema] = {}
     CONFIGURATION_SCHEMA_FALLBACK: ClassVar[str | None] = None
+    REQUIRES_REPOSITORY: ClassVar[bool] = True
 
     def __init__(self, repository_id: RepositoryId, configuration: Configuration) -> None:
         """
@@ -79,6 +81,16 @@ class Trigger(LazyLogging):
         """
         return self.repository_id.architecture
 
+    @property
+    def is_allowed_to_run(self) -> bool:
+        """
+        whether trigger allowed to run or not
+
+        Returns:
+            bool: ``True`` in case if trigger allowed to run and ``False`` otherwise
+        """
+        return not (self.REQUIRES_REPOSITORY and self.repository_id.is_empty)
+
     @classmethod
     def configuration_schema(cls, configuration: Configuration | None) -> ConfigurationSchema:
         """

src/ahriman/core/triggers/trigger_loader.py

@@ -17,6 +17,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 #
+import atexit
 import contextlib
 import os
 
@@ -60,17 +61,8 @@ class TriggerLoader(LazyLogging):
 
     def __init__(self) -> None:
         """"""
-        self._on_stop_requested = False
         self.triggers: list[Trigger] = []
 
-    def __del__(self) -> None:
-        """
-        custom destructor object which calls on_stop in case if it was requested
-        """
-        if not self._on_stop_requested:
-            return
-        self.on_stop()
-
     @classmethod
     def load(cls, repository_id: RepositoryId, configuration: Configuration) -> Self:
         """
@@ -85,8 +77,9 @@ class TriggerLoader(LazyLogging):
         """
         instance = cls()
         instance.triggers = [
-            instance.load_trigger(trigger, repository_id, configuration)
-            for trigger in instance.selected_triggers(configuration)
+            trigger
+            for trigger_name in instance.selected_triggers(configuration)
+            if (trigger := instance.load_trigger(trigger_name, repository_id, configuration)).is_allowed_to_run
         ]
 
         return instance
@@ -250,10 +243,11 @@ class TriggerLoader(LazyLogging):
         run triggers on load
         """
         self.logger.debug("executing triggers on start")
-        self._on_stop_requested = True
         for trigger in self.triggers:
             with self.__execute_trigger(trigger):
                 trigger.on_start()
+        # register on_stop call
+        atexit.register(self.on_stop)
 
     def on_stop(self) -> None:
         """

tests/ahriman/core/triggers/test_trigger.py

@@ -3,6 +3,7 @@ from unittest.mock import MagicMock
 from ahriman.core.configuration import Configuration
 from ahriman.core.report import ReportTrigger
 from ahriman.core.triggers import Trigger
+from ahriman.models.repository_id import RepositoryId
 from ahriman.models.result import Result
 
 
@@ -13,6 +14,19 @@ def test_architecture(trigger: Trigger) -> None:
     assert trigger.architecture == trigger.repository_id.architecture
 
 
+def test_is_allowed_to_run(trigger: Trigger) -> None:
+    """
+    must return flag correctly
+    """
+    assert trigger.is_allowed_to_run
+
+    trigger.repository_id = RepositoryId("", "")
+    assert not trigger.is_allowed_to_run
+
+    trigger.REQUIRES_REPOSITORY = False
+    assert trigger.is_allowed_to_run
+
+
 def test_configuration_schema(configuration: Configuration) -> None:
     """
     must return used configuration schema

tests/ahriman/core/triggers/test_trigger_loader.py

@@ -153,38 +153,12 @@ def test_on_start(trigger_loader: TriggerLoader, mocker: MockerFixture) -> None:
     """
     upload_mock = mocker.patch("ahriman.core.upload.UploadTrigger.on_start")
     report_mock = mocker.patch("ahriman.core.report.ReportTrigger.on_start")
+    atexit_mock = mocker.patch("atexit.register")
 
     trigger_loader.on_start()
-    assert trigger_loader._on_stop_requested
     report_mock.assert_called_once_with()
     upload_mock.assert_called_once_with()
-
-
-def test_on_stop_with_on_start(configuration: Configuration, mocker: MockerFixture) -> None:
-    """
-    must call on_stop on exit if on_start was called
-    """
-    mocker.patch("ahriman.core.upload.UploadTrigger.on_start")
-    mocker.patch("ahriman.core.report.ReportTrigger.on_start")
-    on_stop_mock = mocker.patch("ahriman.core.triggers.trigger_loader.TriggerLoader.on_stop")
-    _, repository_id = configuration.check_loaded()
-
-    trigger_loader = TriggerLoader.load(repository_id, configuration)
-    trigger_loader.on_start()
-    del trigger_loader
-    on_stop_mock.assert_called_once_with()
-
-
-def test_on_stop_without_on_start(configuration: Configuration, mocker: MockerFixture) -> None:
-    """
-    must call not on_stop on exit if on_start wasn't called
-    """
-    on_stop_mock = mocker.patch("ahriman.core.triggers.trigger_loader.TriggerLoader.on_stop")
-    _, repository_id = configuration.check_loaded()
-
-    trigger_loader = TriggerLoader.load(repository_id, configuration)
-    del trigger_loader
-    on_stop_mock.assert_not_called()
+    atexit_mock.assert_called_once_with(trigger_loader.on_stop)
 
 
 def test_on_stop(trigger_loader: TriggerLoader, mocker: MockerFixture) -> None: