mirror of
https://mau.dev/maunium/synapse.git
synced 2024-08-24 19:25:57 +00:00
Use events_to_purge table rather than token
This commit is contained in:
parent
8cbbfd16fb
commit
37dbee6490
@ -1871,6 +1871,10 @@ class EventsStore(EventsWorkerStore):
|
||||
"CREATE INDEX events_to_purge_should_delete"
|
||||
" ON events_to_purge(should_delete)",
|
||||
)
|
||||
txn.execute(
|
||||
"CREATE INDEX events_to_purge_id"
|
||||
" ON events_to_purge(event_id)",
|
||||
)
|
||||
|
||||
# First ensure that we're not about to delete all the forward extremeties
|
||||
txn.execute(
|
||||
@ -1927,9 +1931,8 @@ class EventsStore(EventsWorkerStore):
|
||||
txn.execute(
|
||||
"SELECT DISTINCT e.event_id FROM events_to_purge AS e"
|
||||
" INNER JOIN event_edges AS ed ON e.event_id = ed.prev_event_id"
|
||||
" INNER JOIN events AS e2 ON e2.event_id = ed.event_id"
|
||||
" WHERE e2.topological_ordering >= ?",
|
||||
(topological_ordering, )
|
||||
" LEFT JOIN events_to_purge AS ep2 ON ed.event_id = ep2.event_id"
|
||||
" WHERE ep2.event_id IS NULL",
|
||||
)
|
||||
new_backwards_extrems = txn.fetchall()
|
||||
|
||||
@ -1953,16 +1956,22 @@ class EventsStore(EventsWorkerStore):
|
||||
|
||||
# Get all state groups that are only referenced by events that are
|
||||
# to be deleted.
|
||||
txn.execute(
|
||||
"SELECT state_group FROM event_to_state_groups"
|
||||
" INNER JOIN events USING (event_id)"
|
||||
" WHERE state_group IN ("
|
||||
" SELECT DISTINCT state_group FROM events_to_purge"
|
||||
" INNER JOIN event_to_state_groups USING (event_id)"
|
||||
" )"
|
||||
" GROUP BY state_group HAVING MAX(topological_ordering) < ?",
|
||||
(topological_ordering, )
|
||||
)
|
||||
# This works by first getting state groups that we may want to delete,
|
||||
# joining against event_to_state_groups to get events that use that
|
||||
# state group, then left joining against events_to_purge again. Any
|
||||
# state group where the left join produce *no nulls* are referenced
|
||||
# only by events that are going to be purged.
|
||||
txn.execute("""
|
||||
SELECT state_group FROM
|
||||
(
|
||||
SELECT DISTINCT state_group FROM events_to_purge
|
||||
INNER JOIN event_to_state_groups USING (event_id)
|
||||
) AS sp
|
||||
INNER JOIN event_to_state_groups USING (state_group)
|
||||
LEFT JOIN events_to_purge AS ep USING (event_id)
|
||||
GROUP BY state_group
|
||||
HAVING SUM(CASE WHEN ep.event_id IS NULL THEN 1 ELSE 0 END) = 0
|
||||
""")
|
||||
|
||||
state_rows = txn.fetchall()
|
||||
logger.info("[purge] found %i redundant state groups", len(state_rows))
|
||||
@ -2109,10 +2118,20 @@ class EventsStore(EventsWorkerStore):
|
||||
#
|
||||
# So, let's stick it at the end so that we don't block event
|
||||
# persistence.
|
||||
logger.info("[purge] updating room_depth")
|
||||
txn.execute("""
|
||||
SELECT COALESCE(MIN(depth), 0)
|
||||
FROM event_backward_extremities AS eb
|
||||
INNER JOIN event_edges AS eg ON eg.prev_event_id = eb.event_id
|
||||
INNER JOIN events AS e ON e.event_id = eg.event_id
|
||||
WHERE eb.room_id = ?
|
||||
""", (room_id,))
|
||||
min_depth, = txn.fetchone()
|
||||
|
||||
logger.info("[purge] updating room_depth to %d", min_depth)
|
||||
|
||||
txn.execute(
|
||||
"UPDATE room_depth SET min_depth = ? WHERE room_id = ?",
|
||||
(topological_ordering, room_id,)
|
||||
(min_depth, room_id,)
|
||||
)
|
||||
|
||||
# finally, drop the temp table. this will commit the txn in sqlite,
|
||||
|
Loading…
Reference in New Issue
Block a user