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-rw-r--r--synapse/state/__init__.py4
-rw-r--r--synapse/state/v2.py9
-rw-r--r--synapse/storage/databases/main/event_federation.py4
3 files changed, 12 insertions, 5 deletions
diff --git a/synapse/state/__init__.py b/synapse/state/__init__.py
index 1fa3b280b4..84f59c7d85 100644
--- a/synapse/state/__init__.py
+++ b/synapse/state/__init__.py
@@ -783,7 +783,7 @@ class StateResolutionStore:
         )
 
     def get_auth_chain_difference(
-        self, state_sets: List[Set[str]]
+        self, room_id: str, state_sets: List[Set[str]]
     ) -> Awaitable[Set[str]]:
         """Given sets of state events figure out the auth chain difference (as
         per state res v2 algorithm).
@@ -796,4 +796,4 @@ class StateResolutionStore:
             An awaitable that resolves to a set of event IDs.
         """
 
-        return self.store.get_auth_chain_difference(state_sets)
+        return self.store.get_auth_chain_difference(room_id, state_sets)
diff --git a/synapse/state/v2.py b/synapse/state/v2.py
index ffc504ce77..f85124bf81 100644
--- a/synapse/state/v2.py
+++ b/synapse/state/v2.py
@@ -97,7 +97,9 @@ async def resolve_events_with_store(
 
     # Also fetch all auth events that appear in only some of the state sets'
     # auth chains.
-    auth_diff = await _get_auth_chain_difference(state_sets, event_map, state_res_store)
+    auth_diff = await _get_auth_chain_difference(
+        room_id, state_sets, event_map, state_res_store
+    )
 
     full_conflicted_set = set(
         itertools.chain(
@@ -236,6 +238,7 @@ async def _get_power_level_for_sender(
 
 
 async def _get_auth_chain_difference(
+    room_id: str,
     state_sets: Sequence[StateMap[str]],
     event_map: Dict[str, EventBase],
     state_res_store: "synapse.state.StateResolutionStore",
@@ -332,7 +335,9 @@ async def _get_auth_chain_difference(
         difference_from_event_map = ()
         state_sets_ids = [set(state_set.values()) for state_set in state_sets]
 
-    difference = await state_res_store.get_auth_chain_difference(state_sets_ids)
+    difference = await state_res_store.get_auth_chain_difference(
+        room_id, state_sets_ids
+    )
     difference.update(difference_from_event_map)
 
     return difference
diff --git a/synapse/storage/databases/main/event_federation.py b/synapse/storage/databases/main/event_federation.py
index 2e07c37340..ebffd89251 100644
--- a/synapse/storage/databases/main/event_federation.py
+++ b/synapse/storage/databases/main/event_federation.py
@@ -137,7 +137,9 @@ class EventFederationWorkerStore(EventsWorkerStore, SignatureWorkerStore, SQLBas
 
         return list(results)
 
-    async def get_auth_chain_difference(self, state_sets: List[Set[str]]) -> Set[str]:
+    async def get_auth_chain_difference(
+        self, room_id: str, state_sets: List[Set[str]]
+    ) -> Set[str]:
         """Given sets of state events figure out the auth chain difference (as
         per state res v2 algorithm).