1 files changed, 16 insertions, 25 deletions
diff --git a/synapse/storage/signatures.py b/synapse/storage/signatures.py
index 158e9dbe7b..6bd81e84ad 100644
--- a/synapse/storage/signatures.py
+++ b/synapse/storage/signatures.py
@@ -39,8 +39,9 @@ class SignatureWorkerStore(SQLBaseStore):
         # to use its cache
         raise NotImplementedError()
 
-    @cachedList(cached_method_name="get_event_reference_hash",
-                list_name="event_ids", num_args=1)
+    @cachedList(
+        cached_method_name="get_event_reference_hash", list_name="event_ids", num_args=1
+    )
     def get_event_reference_hashes(self, event_ids):
         def f(txn):
             return {
@@ -48,21 +49,13 @@ class SignatureWorkerStore(SQLBaseStore):
                 for event_id in event_ids
             }
 
-        return self.runInteraction(
-            "get_event_reference_hashes",
-            f
-        )
+        return self.runInteraction("get_event_reference_hashes", f)
 
     @defer.inlineCallbacks
     def add_event_hashes(self, event_ids):
-        hashes = yield self.get_event_reference_hashes(
-            event_ids
-        )
+        hashes = yield self.get_event_reference_hashes(event_ids)
         hashes = {
-            e_id: {
-                k: encode_base64(v) for k, v in h.items()
-                if k == "sha256"
-            }
+            e_id: {k: encode_base64(v) for k, v in h.items() if k == "sha256"}
             for e_id, h in hashes.items()
         }
 
@@ -81,7 +74,7 @@ class SignatureWorkerStore(SQLBaseStore):
             " FROM event_reference_hashes"
             " WHERE event_id = ?"
         )
-        txn.execute(query, (event_id, ))
+        txn.execute(query, (event_id,))
         return {k: v for k, v in txn}
 
 
@@ -98,14 +91,12 @@ class SignatureStore(SignatureWorkerStore):
         vals = []
         for event in events:
             ref_alg, ref_hash_bytes = compute_event_reference_hash(event)
-            vals.append({
-                "event_id": event.event_id,
-                "algorithm": ref_alg,
-                "hash": db_binary_type(ref_hash_bytes),
-            })
-
-        self._simple_insert_many_txn(
-            txn,
-            table="event_reference_hashes",
-            values=vals,
-        )
+            vals.append(
+                {
+                    "event_id": event.event_id,
+                    "algorithm": ref_alg,
+                    "hash": db_binary_type(ref_hash_bytes),
+                }
+            )
+
+        self._simple_insert_many_txn(txn, table="event_reference_hashes", values=vals)