Add durable search event indexing contract

tests/test_module_system.py

@@ -250,6 +250,7 @@ class ModuleSystemTests(unittest.TestCase):
                 "postbox",
                 "approvals",
                 "reporting",
+                "search",
             ),
         )
         self.assertEqual(manifests["dashboard"].dependencies, ())
@@ -3517,7 +3518,7 @@ finally:
             "version_max_exclusive": "0.2.0",
         }, modules["files"]["requires_interfaces"])
         self.assertEqual(
-            ["campaigns", "encryption"],
+            ["campaigns", "encryption", "search"],
             modules["files"]["optional_dependencies"],
         )
         self.assertIn({"name": "mail.campaign_delivery", "version": "0.2.0"}, modules["mail"]["provides_interfaces"])
@@ -3581,6 +3582,7 @@ finally:
                 "postbox",
                 "approvals",
                 "reporting",
+                "search",
             ],
             modules["campaigns"]["optional_dependencies"],
         )

tests/test_platform_event_worker.py

@@ -46,6 +46,10 @@ class PlatformEventWorkerTests(unittest.TestCase):
                 "govoplan_core.celery_app._workflow_trigger_dispatcher",
                 return_value=None,
             ),
+            patch(
+                "govoplan_core.celery_app._search_index_coordinator",
+                return_value=None,
+            ),
             patch(
                 "govoplan_core.db.session.get_database",
                 return_value=database,
@@ -77,6 +81,70 @@ class PlatformEventWorkerTests(unittest.TestCase):
         session.commit.assert_called_once_with()
         self.assertEqual(1, result["delivered"])
 
+    def test_dispatch_uses_a_durable_search_consumer_and_processes_changes(self) -> None:
+        session = MagicMock()
+        database = MagicMock()
+        database.SessionLocal.return_value.__enter__.return_value = session
+        outbox = MagicMock()
+        outbox.dispatch_pending.return_value = {
+            "selected": 1,
+            "delivered": 1,
+            "retrying": 0,
+            "quarantined": 0,
+            "dispatched": 1,
+            "observer_failed": 0,
+        }
+        search = MagicMock()
+        search.process_changes.return_value = {
+            "selected": 1,
+            "applied": 1,
+            "retrying": 0,
+            "quarantined": 0,
+        }
+
+        with (
+            patch(
+                "govoplan_core.celery_app._platform_registry",
+                return_value=MagicMock(),
+            ),
+            patch(
+                "govoplan_core.celery_app._platform_event_outbox",
+                return_value=outbox,
+            ),
+            patch(
+                "govoplan_core.celery_app._dataflow_trigger_dispatcher",
+                return_value=None,
+            ),
+            patch(
+                "govoplan_core.celery_app._workflow_trigger_dispatcher",
+                return_value=None,
+            ),
+            patch(
+                "govoplan_core.celery_app._search_index_coordinator",
+                return_value=search,
+            ),
+            patch(
+                "govoplan_core.db.session.get_database",
+                return_value=database,
+            ),
+        ):
+            result = dispatch_platform_events.run(25)
+
+        consumer = outbox.dispatch_pending.call_args.kwargs["consumers"][0]
+        self.assertEqual("search.indexing.v1", consumer.consumer_id)
+        self.assertEqual(frozenset({"*"}), consumer.event_types)
+        event = PlatformEvent(type="files.file.updated", module_id="files")
+        delivery_key = consumer.delivery_key(event)
+        consumer.handler(event, delivery_key)
+        search.ingest_event.assert_called_once_with(
+            session,
+            event=event,
+            delivery_key=delivery_key,
+        )
+        search.process_changes.assert_called_once_with(session, limit=25)
+        self.assertEqual(1, result["search_changes"]["applied"])
+        session.commit.assert_called_once_with()
+
     def test_retention_task_uses_the_configured_terminal_window(self) -> None:
         session = MagicMock()
         database = MagicMock()