From 7ab2b69e188e84a1360f0381f36af4b8445395bf Mon Sep 17 00:00:00 2001 From: Richard van der Hoff Date: Thu, 16 Nov 2017 15:32:01 +0000 Subject: [PATCH] Avoid locking `pushers` table on upsert Now that _simple_upsert will retry on IntegrityError, we don't need to lock the table. --- synapse/storage/pusher.py | 55 ++++++++++++++++++++------------------- 1 file changed, 28 insertions(+), 27 deletions(-) diff --git a/synapse/storage/pusher.py b/synapse/storage/pusher.py index 34d2f82b7f..19ce41fde9 100644 --- a/synapse/storage/pusher.py +++ b/synapse/storage/pusher.py @@ -204,34 +204,35 @@ class PusherStore(SQLBaseStore): pushkey, pushkey_ts, lang, data, last_stream_ordering, profile_tag=""): with self._pushers_id_gen.get_next() as stream_id: - def f(txn): - newly_inserted = self._simple_upsert_txn( - txn, - "pushers", - { - "app_id": app_id, - "pushkey": pushkey, - "user_name": user_id, - }, - { - "access_token": access_token, - "kind": kind, - "app_display_name": app_display_name, - "device_display_name": device_display_name, - "ts": pushkey_ts, - "lang": lang, - "data": encode_canonical_json(data), - "last_stream_ordering": last_stream_ordering, - "profile_tag": profile_tag, - "id": stream_id, - }, - ) - if newly_inserted: - # get_if_user_has_pusher only cares if the user has - # at least *one* pusher. - txn.call_after(self.get_if_user_has_pusher.invalidate, (user_id,)) + # no need to lock because `pushers` has a unique key on + # (app_id, pushkey, user_name) so _simple_upsert will retry + newly_inserted = yield self._simple_upsert( + table="pushers", + keyvalues={ + "app_id": app_id, + "pushkey": pushkey, + "user_name": user_id, + }, + values={ + "access_token": access_token, + "kind": kind, + "app_display_name": app_display_name, + "device_display_name": device_display_name, + "ts": pushkey_ts, + "lang": lang, + "data": encode_canonical_json(data), + "last_stream_ordering": last_stream_ordering, + "profile_tag": profile_tag, + "id": stream_id, + }, + desc="add_pusher", + lock=False, + ) - yield self.runInteraction("add_pusher", f) + if newly_inserted: + # get_if_user_has_pusher only cares if the user has + # at least *one* pusher. + self.get_if_user_has_pusher.invalidate(user_id,) @defer.inlineCallbacks def delete_pusher_by_app_id_pushkey_user_id(self, app_id, pushkey, user_id):