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Just iterate once rather than create a new set

This commit is contained in:
Erik Johnston 2018-05-30 11:35:02 +01:00
parent 1cdd0d3b0d
commit ecd4931ab2
1 changed files with 6 additions and 13 deletions
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19
synapse/storage/events.py
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@ -1503,24 +1503,17 @@ class EventsStore(EventsWorkerStore):
retcol="chunk_id",
)
prev_chunk_ids = set(
pid for pid in prev_chunk_ids
if pid is not None and pid not in current_prev_ids and pid != chunk_id
)
forward_chunk_ids = set(
fid for fid in forward_chunk_ids
if fid not in current_forward_ids and fid != chunk_id
)
for pid in prev_chunk_ids:
# Note that the edge direction is reversed than what you might
# expect. See ChunkDBOrderedListStore for more details.
table.add_edge(pid, chunk_id)
if pid is not None and pid not in current_prev_ids and pid != chunk_id:
# Note that the edge direction is reversed than what you might
# expect. See ChunkDBOrderedListStore for more details.
table.add_edge(pid, chunk_id)
for fid in forward_chunk_ids:
# Note that the edge direction is reversed than what you might
# expect. See ChunkDBOrderedListStore for more details.
table.add_edge(chunk_id, fid)
if fid not in current_forward_ids and fid != chunk_id:
table.add_edge(chunk_id, fid)
# We now need to update the backwards extremities for the chunks.