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Use stream cache in get_linearized_receipts_for_room 

This avoids us from uncessarily hitting the database when there has been
no change for the room
This commit is contained in:
Erik Johnston 2018-07-10 17:21:17 +01:00
parent c3c29aa196
commit 05f5dabc10
2 changed files with 14 additions and 5 deletions
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2
synapse/replication/slave/storage/receipts.py
View File

@ -49,7 +49,7 @@ class SlavedReceiptsStore(ReceiptsWorkerStore, BaseSlavedStore):
def invalidate_caches_for_receipt(self, room_id, receipt_type, user_id): def invalidate_caches_for_receipt(self, room_id, receipt_type, user_id):
self.get_receipts_for_user.invalidate((user_id, receipt_type)) self.get_receipts_for_user.invalidate((user_id, receipt_type))
self.get_linearized_receipts_for_room.invalidate_many((room_id,)) self._get_linearized_receipts_for_room.invalidate_many((room_id,))
self.get_last_receipt_event_id_for_user.invalidate( self.get_last_receipt_event_id_for_user.invalidate(
(user_id, room_id, receipt_type) (user_id, room_id, receipt_type)
) )

17
synapse/storage/receipts.py
View File

@ -151,7 +151,6 @@ class ReceiptsWorkerStore(SQLBaseStore):
defer.returnValue([ev for res in results.values() for ev in res]) defer.returnValue([ev for res in results.values() for ev in res])
@cachedInlineCallbacks(num_args=3, tree=True)
def get_linearized_receipts_for_room(self, room_id, to_key, from_key=None): def get_linearized_receipts_for_room(self, room_id, to_key, from_key=None):
"""Get receipts for a single room for sending to clients. """Get receipts for a single room for sending to clients.
@ -164,6 +163,16 @@ class ReceiptsWorkerStore(SQLBaseStore):
Returns: Returns:
list: A list of receipts. list: A list of receipts.
""" """
if from_key:
if not self._receipts_stream_cache.has_entity_changed(room_id, from_key):
defer.succeed([])
return self._get_linearized_receipts_for_room(room_id, to_key, from_key)
@cachedInlineCallbacks(num_args=3, tree=True)
def _get_linearized_receipts_for_room(self, room_id, to_key, from_key=None):
"""See get_linearized_receipts_for_room
"""
def f(txn): def f(txn):
if from_key: if from_key:
sql = ( sql = (
@ -211,7 +220,7 @@ class ReceiptsWorkerStore(SQLBaseStore):
"content": content, "content": content,
}]) }])
@cachedList(cached_method_name="get_linearized_receipts_for_room", @cachedList(cached_method_name="_get_linearized_receipts_for_room",
list_name="room_ids", num_args=3, inlineCallbacks=True) list_name="room_ids", num_args=3, inlineCallbacks=True)
def _get_linearized_receipts_for_rooms(self, room_ids, to_key, from_key=None): def _get_linearized_receipts_for_rooms(self, room_ids, to_key, from_key=None):
if not room_ids: if not room_ids:
@ -373,7 +382,7 @@ class ReceiptsStore(ReceiptsWorkerStore):
self.get_receipts_for_user.invalidate, (user_id, receipt_type) self.get_receipts_for_user.invalidate, (user_id, receipt_type)
) )
# FIXME: This shouldn't invalidate the whole cache # FIXME: This shouldn't invalidate the whole cache
txn.call_after(self.get_linearized_receipts_for_room.invalidate_many, (room_id,)) txn.call_after(self._get_linearized_receipts_for_room.invalidate_many, (room_id,))
txn.call_after( txn.call_after(
self._receipts_stream_cache.entity_has_changed, self._receipts_stream_cache.entity_has_changed,
@ -493,7 +502,7 @@ class ReceiptsStore(ReceiptsWorkerStore):
self.get_receipts_for_user.invalidate, (user_id, receipt_type) self.get_receipts_for_user.invalidate, (user_id, receipt_type)
) )
# FIXME: This shouldn't invalidate the whole cache # FIXME: This shouldn't invalidate the whole cache
txn.call_after(self.get_linearized_receipts_for_room.invalidate_many, (room_id,)) txn.call_after(self._get_linearized_receipts_for_room.invalidate_many, (room_id,))
self._simple_delete_txn( self._simple_delete_txn(
txn, txn,