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Rename 'populate_stats_process_rooms_2' background job back to 'populate_stats_process_rooms' again (#8243)

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Fixes https://github.com/matrix-org/synapse/issues/8238

Alongside the delta file, some changes were also necessary to the codebase to remove references to the now defunct `populate_stats_process_rooms_2` background job. Thankfully the latter doesn't seem to have made it into any documentation yet :)
This commit is contained in:
Andrew Morgan 2020-09-08 11:05:59 +01:00 committed by GitHub
parent 8d6f97f932
commit 68cdb3708e
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4 changed files with 35 additions and 39 deletions
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1
changelog.d/8243.misc Normal file
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@ -0,0 +1 @@
Remove the 'populate_stats_process_rooms_2' background job and restore functionality to 'populate_stats_process_rooms'.

22
synapse/storage/databases/main/schema/delta/58/16populate_stats_process_rooms_fix.sql Normal file
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@ -0,0 +1,22 @@
/* Copyright 2020 The Matrix.org Foundation C.I.C.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
-- This delta file fixes a regression introduced by 58/12room_stats.sql, removing the hacky
-- populate_stats_process_rooms_2 background job and restores the functionality under the
-- original name.
-- See https://github.com/matrix-org/synapse/issues/8238 for details
DELETE FROM background_updates WHERE update_name = 'populate_stats_process_rooms';
UPDATE background_updates SET update_name = 'populate_stats_process_rooms'
WHERE update_name = 'populate_stats_process_rooms_2';

36
synapse/storage/databases/main/stats.py
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@ -73,9 +73,6 @@ class StatsStore(StateDeltasStore):
self.db_pool.updates.register_background_update_handler(
"populate_stats_process_rooms", self._populate_stats_process_rooms
)
self.db_pool.updates.register_background_update_handler(
"populate_stats_process_rooms_2", self._populate_stats_process_rooms_2
)
self.db_pool.updates.register_background_update_handler(
"populate_stats_process_users", self._populate_stats_process_users
)
@ -148,31 +145,10 @@ class StatsStore(StateDeltasStore):
return len(users_to_work_on)
async def _populate_stats_process_rooms(self, progress, batch_size):
"""
This was a background update which regenerated statistics for rooms.
It has been replaced by StatsStore._populate_stats_process_rooms_2. This background
job has been scheduled to run as part of Synapse v1.0.0, and again now. To ensure
someone upgrading from <v1.0.0, this background task has been turned into a no-op
so that the potentially expensive task is not run twice.
Further context: https://github.com/matrix-org/synapse/pull/7977
"""
await self.db_pool.updates._end_background_update(
"populate_stats_process_rooms"
)
return 1
async def _populate_stats_process_rooms_2(self, progress, batch_size):
"""
This is a background update which regenerates statistics for rooms.
It replaces StatsStore._populate_stats_process_rooms. See its docstring for the
reasoning.
"""
"""This is a background update which regenerates statistics for rooms."""
if not self.stats_enabled:
await self.db_pool.updates._end_background_update(
"populate_stats_process_rooms_2"
"populate_stats_process_rooms"
)
return 1
@ -189,13 +165,13 @@ class StatsStore(StateDeltasStore):
return [r for r, in txn]
rooms_to_work_on = await self.db_pool.runInteraction(
"populate_stats_rooms_2_get_batch", _get_next_batch
"populate_stats_rooms_get_batch", _get_next_batch
)
# No more rooms -- complete the transaction.
if not rooms_to_work_on:
await self.db_pool.updates._end_background_update(
"populate_stats_process_rooms_2"
"populate_stats_process_rooms"
)
return 1
@ -204,9 +180,9 @@ class StatsStore(StateDeltasStore):
progress["last_room_id"] = room_id
await self.db_pool.runInteraction(
"_populate_stats_process_rooms_2",
"_populate_stats_process_rooms",
self.db_pool.updates._background_update_progress_txn,
"populate_stats_process_rooms_2",
"populate_stats_process_rooms",
progress,
)

15
tests/handlers/test_stats.py
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@ -54,7 +54,7 @@ class StatsRoomTests(unittest.HomeserverTestCase):
self.store.db_pool.simple_insert(
"background_updates",
{
"update_name": "populate_stats_process_rooms_2",
"update_name": "populate_stats_process_rooms",
"progress_json": "{}",
"depends_on": "populate_stats_prepare",
},
@ -66,7 +66,7 @@ class StatsRoomTests(unittest.HomeserverTestCase):
{
"update_name": "populate_stats_process_users",
"progress_json": "{}",
"depends_on": "populate_stats_process_rooms_2",
"depends_on": "populate_stats_process_rooms",
},
)
)
@ -219,10 +219,7 @@ class StatsRoomTests(unittest.HomeserverTestCase):
self.get_success(
self.store.db_pool.simple_insert(
"background_updates",
{
"update_name": "populate_stats_process_rooms_2",
"progress_json": "{}",
},
{"update_name": "populate_stats_process_rooms", "progress_json": "{}"},
)
)
self.get_success(
@ -231,7 +228,7 @@ class StatsRoomTests(unittest.HomeserverTestCase):
{
"update_name": "populate_stats_cleanup",
"progress_json": "{}",
"depends_on": "populate_stats_process_rooms_2",
"depends_on": "populate_stats_process_rooms",
},
)
)
@ -728,7 +725,7 @@ class StatsRoomTests(unittest.HomeserverTestCase):
self.store.db_pool.simple_insert(
"background_updates",
{
"update_name": "populate_stats_process_rooms_2",
"update_name": "populate_stats_process_rooms",
"progress_json": "{}",
"depends_on": "populate_stats_prepare",
},
@ -740,7 +737,7 @@ class StatsRoomTests(unittest.HomeserverTestCase):
{
"update_name": "populate_stats_process_users",
"progress_json": "{}",
"depends_on": "populate_stats_process_rooms_2",
"depends_on": "populate_stats_process_rooms",
},
)
)