plugins: add url support

Add a field for plugins to declare urlpatterns. This also works with the
current way plugins' urls works, which doesn't work well but instead of
fixing something that's going away and isn't used anyway I just left it
the way it is.

src/gentoo_build_publisher/plugins.py

@@ -17,6 +17,7 @@ class Plugin:
     name: str
     app: str
     graphql: Optional[str]
+    urls: Optional[str]
 
     def __hash__(self) -> int:
         return hash(self.app)
@@ -39,6 +40,9 @@ class PluginDef(TypedDict):
     Plugins are not required to expose any GraphQL types
     """
 
+    urls: NotRequired[str]
+    """Dotted path to module containing urlpatterns"""
+
 
 @cache
 def get_plugins() -> list[Plugin]:
@@ -57,8 +61,13 @@ def ep2plugin(ep: EntryPoint) -> Plugin:
     data: str | PluginDef = ep.load()
 
     if isinstance(data, str):
-        return Plugin(name=ep.name, app=data, graphql=None)
+        return Plugin(name=ep.name, app=data, graphql=None, urls=f"{data}.urls")
     if isinstance(data, dict):
-        return Plugin(name=data["name"], app=data["app"], graphql=data.get("graphql"))
+        return Plugin(
+            name=data["name"],
+            app=data["app"],
+            graphql=data.get("graphql"),
+            urls=data.get("urls"),
+        )
 
     raise ValueError(f"{data!r} is not a dict or string")

src/gentoo_build_publisher/urls.py

@@ -4,20 +4,29 @@
 
 from django.urls import URLPattern
 
-from gentoo_build_publisher import utils
+from gentoo_build_publisher.plugins import Plugin, get_plugins
 from gentoo_build_publisher.views.utils import ViewFinder
 
 urlpatterns = ViewFinder.find()
 
 
-def app_urlpatterns(app: str) -> list[URLPattern]:
-    """Return the urlpatterns defined in the given app"""
+def plugin_urlpatterns(plugin: Plugin) -> list[URLPattern]:
+    """Return the urlpatterns defined in the given plugin"""
+    if not plugin.urls:
+        return []
+
     try:
-        module = import_module(f"{app}.urls")
+        module = import_module(plugin.urls)
     except ImportError:
         return []
 
     return getattr(module, "urlpatterns", [])
 
 
-utils.for_each_app(lambda app: urlpatterns.extend(app_urlpatterns(app)))
+def init() -> None:
+    """Initialize plugin urls"""
+    for plugin in get_plugins():
+        urlpatterns.extend(plugin_urlpatterns(plugin))
+
+
+init()

tests/test_plugins.py

@@ -20,9 +20,10 @@ def test_with_dict(self, m_entry_points: mock.Mock) -> None:
         plugins.get_plugins.cache_clear()
         result = plugins.get_plugins()
 
-        self.assertEqual(
-            [Plugin(name="test", app="test.apps.TestAppConfig", graphql=None)], result
+        plugin = Plugin(
+            name="test", app="test.apps.TestAppConfig", graphql=None, urls=None
         )
+        self.assertEqual([plugin], result)
         entry_points.select.assert_any_call(group="gentoo_build_publisher.apps")
         entry_points.select.assert_any_call(group="gentoo_build_publisher.plugins")
 
@@ -34,8 +35,12 @@ def test_with_string(self, m_entry_points: mock.Mock) -> None:
         plugins.get_plugins.cache_clear()
         result = plugins.get_plugins()
 
-        self.assertEqual(
-            [Plugin(name="test", app="test.apps.TestAppConfig", graphql=None)], result
+        plugin = Plugin(
+            name="test",
+            app="test.apps.TestAppConfig",
+            graphql=None,
+            urls="test.apps.TestAppConfig.urls",
         )
+        self.assertEqual([plugin], result)
         entry_points.select.assert_any_call(group="gentoo_build_publisher.apps")
         entry_points.select.assert_any_call(group="gentoo_build_publisher.plugins")