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Merge pull request #635 from matrix-org/erikj/sync_order

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Use topological orders for initial sync timeline
This commit is contained in:
Erik Johnston 2016-03-11 13:17:49 +00:00
commit 58443a022d
1 changed files with 6 additions and 3 deletions
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9
synapse/storage/stream.py
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@ -184,6 +184,9 @@ class StreamStore(SQLBaseStore):
@defer.inlineCallbacks
def get_room_events_stream_for_room(self, room_id, from_key, to_key, limit=0,
order='DESC'):
# Note: If from_key is None then we return in topological order. This
# is because in that case we're using this as a "get the last few messages
# in a room" function, rather than "get new messages since last sync"
if from_key is not None:
from_id = RoomStreamToken.parse_stream_token(from_key).stream
else:
@ -217,8 +220,8 @@ class StreamStore(SQLBaseStore):
" room_id = ?"
" AND not outlier"
" AND stream_ordering <= ?"
" ORDER BY stream_ordering %s LIMIT ?"
) % (order,)
" ORDER BY topological_ordering %s, stream_ordering %s LIMIT ?"
) % (order, order,)
txn.execute(sql, (room_id, to_id, limit))
rows = self.cursor_to_dict(txn)
@ -232,7 +235,7 @@ class StreamStore(SQLBaseStore):
get_prev_content=True
)
self._set_before_and_after(ret, rows, topo_order=False)
self._set_before_and_after(ret, rows, topo_order=from_id is None)
if order.lower() == "desc":
ret.reverse()