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Merge pull request #840 from matrix-org/erikj/event_write_through

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Add events to cache when we persist them
This commit is contained in:
Erik Johnston 2016-06-06 14:17:35 +01:00
commit 778c1fea8b
1 changed files with 41 additions and 0 deletions
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41
synapse/storage/events.py
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@ -635,6 +635,8 @@ class EventsStore(SQLBaseStore):
],
)
self._add_to_cache(txn, events_and_contexts)
if backfilled:
# Backfilled events come before the current state so we don't need
# to update the current state table
@ -676,6 +678,45 @@ class EventsStore(SQLBaseStore):
return
def _add_to_cache(self, txn, events_and_contexts):
to_prefill = []
rows = []
N = 200
for i in range(0, len(events_and_contexts), N):
ev_map = {
e[0].event_id: e[0]
for e in events_and_contexts[i:i + N]
}
if not ev_map:
break
sql = (
"SELECT "
" e.event_id as event_id, "
" r.redacts as redacts,"
" rej.event_id as rejects "
" FROM events as e"
" LEFT JOIN rejections as rej USING (event_id)"
" LEFT JOIN redactions as r ON e.event_id = r.redacts"
" WHERE e.event_id IN (%s)"
) % (",".join(["?"] * len(ev_map)),)
txn.execute(sql, ev_map.keys())
rows = self.cursor_to_dict(txn)
for row in rows:
event = ev_map[row["event_id"]]
if not row["rejects"] and not row["redacts"]:
to_prefill.append(_EventCacheEntry(
event=event,
redacted_event=None,
))
def prefill():
for cache_entry in to_prefill:
self._get_event_cache.prefill((cache_entry[0].event_id,), cache_entry)
txn.call_after(prefill)
def _store_redaction(self, txn, event):
# invalidate the cache for the redacted event
txn.call_after(self._invalidate_get_event_cache, event.redacts)