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-rw-r--r--synapse/storage/databases/main/cache.py57
1 files changed, 36 insertions, 21 deletions
diff --git a/synapse/storage/databases/main/cache.py b/synapse/storage/databases/main/cache.py
index d6a2df1afe..2d7511d613 100644
--- a/synapse/storage/databases/main/cache.py
+++ b/synapse/storage/databases/main/cache.py
@@ -23,6 +23,7 @@ from synapse.replication.tcp.streams.events import (
     EventsStream,
     EventsStreamCurrentStateRow,
     EventsStreamEventRow,
+    EventsStreamRow,
 )
 from synapse.storage._base import SQLBaseStore
 from synapse.storage.database import (
@@ -31,6 +32,7 @@ from synapse.storage.database import (
     LoggingTransaction,
 )
 from synapse.storage.engines import PostgresEngine
+from synapse.util.caches.descriptors import _CachedFunction
 from synapse.util.iterutils import batch_iter
 
 if TYPE_CHECKING:
@@ -82,7 +84,9 @@ class CacheInvalidationWorkerStore(SQLBaseStore):
         if last_id == current_id:
             return [], current_id, False
 
-        def get_all_updated_caches_txn(txn):
+        def get_all_updated_caches_txn(
+            txn: LoggingTransaction,
+        ) -> Tuple[List[Tuple[int, tuple]], int, bool]:
             # We purposefully don't bound by the current token, as we want to
             # send across cache invalidations as quickly as possible. Cache
             # invalidations are idempotent, so duplicates are fine.
@@ -107,7 +111,9 @@ class CacheInvalidationWorkerStore(SQLBaseStore):
             "get_all_updated_caches", get_all_updated_caches_txn
         )
 
-    def process_replication_rows(self, stream_name, instance_name, token, rows):
+    def process_replication_rows(
+        self, stream_name: str, instance_name: str, token: int, rows: Iterable[Any]
+    ) -> None:
         if stream_name == EventsStream.NAME:
             for row in rows:
                 self._process_event_stream_row(token, row)
@@ -142,10 +148,11 @@ class CacheInvalidationWorkerStore(SQLBaseStore):
 
         super().process_replication_rows(stream_name, instance_name, token, rows)
 
-    def _process_event_stream_row(self, token, row):
+    def _process_event_stream_row(self, token: int, row: EventsStreamRow) -> None:
         data = row.data
 
         if row.type == EventsStreamEventRow.TypeId:
+            assert isinstance(data, EventsStreamEventRow)
             self._invalidate_caches_for_event(
                 token,
                 data.event_id,
@@ -157,9 +164,8 @@ class CacheInvalidationWorkerStore(SQLBaseStore):
                 backfilled=False,
             )
         elif row.type == EventsStreamCurrentStateRow.TypeId:
-            self._curr_state_delta_stream_cache.entity_has_changed(
-                row.data.room_id, token
-            )
+            assert isinstance(data, EventsStreamCurrentStateRow)
+            self._curr_state_delta_stream_cache.entity_has_changed(data.room_id, token)
 
             if data.type == EventTypes.Member:
                 self.get_rooms_for_user_with_stream_ordering.invalidate(
@@ -170,15 +176,15 @@ class CacheInvalidationWorkerStore(SQLBaseStore):
 
     def _invalidate_caches_for_event(
         self,
-        stream_ordering,
-        event_id,
-        room_id,
-        etype,
-        state_key,
-        redacts,
-        relates_to,
-        backfilled,
-    ):
+        stream_ordering: int,
+        event_id: str,
+        room_id: str,
+        etype: str,
+        state_key: Optional[str],
+        redacts: Optional[str],
+        relates_to: Optional[str],
+        backfilled: bool,
+    ) -> None:
         self._invalidate_get_event_cache(event_id)
         self.have_seen_event.invalidate((room_id, event_id))
 
@@ -207,7 +213,9 @@ class CacheInvalidationWorkerStore(SQLBaseStore):
             self.get_thread_summary.invalidate((relates_to,))
             self.get_thread_participated.invalidate((relates_to,))
 
-    async def invalidate_cache_and_stream(self, cache_name: str, keys: Tuple[Any, ...]):
+    async def invalidate_cache_and_stream(
+        self, cache_name: str, keys: Tuple[Any, ...]
+    ) -> None:
         """Invalidates the cache and adds it to the cache stream so slaves
         will know to invalidate their caches.
 
@@ -227,7 +235,12 @@ class CacheInvalidationWorkerStore(SQLBaseStore):
             keys,
         )
 
-    def _invalidate_cache_and_stream(self, txn, cache_func, keys):
+    def _invalidate_cache_and_stream(
+        self,
+        txn: LoggingTransaction,
+        cache_func: _CachedFunction,
+        keys: Tuple[Any, ...],
+    ) -> None:
         """Invalidates the cache and adds it to the cache stream so slaves
         will know to invalidate their caches.
 
@@ -238,7 +251,9 @@ class CacheInvalidationWorkerStore(SQLBaseStore):
         txn.call_after(cache_func.invalidate, keys)
         self._send_invalidation_to_replication(txn, cache_func.__name__, keys)
 
-    def _invalidate_all_cache_and_stream(self, txn, cache_func):
+    def _invalidate_all_cache_and_stream(
+        self, txn: LoggingTransaction, cache_func: _CachedFunction
+    ) -> None:
         """Invalidates the entire cache and adds it to the cache stream so slaves
         will know to invalidate their caches.
         """
@@ -279,8 +294,8 @@ class CacheInvalidationWorkerStore(SQLBaseStore):
             )
 
     def _send_invalidation_to_replication(
-        self, txn, cache_name: str, keys: Optional[Iterable[Any]]
-    ):
+        self, txn: LoggingTransaction, cache_name: str, keys: Optional[Iterable[Any]]
+    ) -> None:
         """Notifies replication that given cache has been invalidated.
 
         Note that this does *not* invalidate the cache locally.
@@ -315,7 +330,7 @@ class CacheInvalidationWorkerStore(SQLBaseStore):
                     "instance_name": self._instance_name,
                     "cache_func": cache_name,
                     "keys": keys,
-                    "invalidation_ts": self.clock.time_msec(),
+                    "invalidation_ts": self._clock.time_msec(),
                 },
             )