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Remove old tables after schema version bump (#9055) 

These tables are unused, and can be dropped now the schema version has been bumped.
This commit is contained in:
Erik Johnston 2021-01-11 13:58:19 +00:00 committed by GitHub
parent 63f4990298
commit 4e04435bda
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GPG Key ID: 4AEE18F83AFDEB23
6 changed files with 37 additions and 59 deletions
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1
changelog.d/9055.misc Normal file
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@ -0,0 +1 @@
Drop unused database tables.

48
synapse/storage/databases/main/account_data.py
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@ -312,12 +312,9 @@ class AccountDataStore(AccountDataWorkerStore):
def __init__(self, database: DatabasePool, db_conn, hs):
self._account_data_id_gen = StreamIdGenerator(
db_conn,
"account_data_max_stream_id",
"room_account_data",
"stream_id",
extra_tables=[
("room_account_data", "stream_id"),
("room_tags_revisions", "stream_id"),
],
extra_tables=[("room_tags_revisions", "stream_id")],
)
super().__init__(database, db_conn, hs)
@ -362,14 +359,6 @@ class AccountDataStore(AccountDataWorkerStore):
lock=False,
)
# it's theoretically possible for the above to succeed and the
# below to fail - in which case we might reuse a stream id on
# restart, and the above update might not get propagated. That
# doesn't sound any worse than the whole update getting lost,
# which is what would happen if we combined the two into one
# transaction.
await self._update_max_stream_id(next_id)
self._account_data_stream_cache.entity_has_changed(user_id, next_id)
self.get_account_data_for_user.invalidate((user_id,))
self.get_account_data_for_room.invalidate((user_id, room_id))
@ -402,18 +391,6 @@ class AccountDataStore(AccountDataWorkerStore):
content,
)
# it's theoretically possible for the above to succeed and the
# below to fail - in which case we might reuse a stream id on
# restart, and the above update might not get propagated. That
# doesn't sound any worse than the whole update getting lost,
# which is what would happen if we combined the two into one
# transaction.
#
# Note: This is only here for backwards compat to allow admins to
# roll back to a previous Synapse version. Next time we update the
# database version we can remove this table.
await self._update_max_stream_id(next_id)
self._account_data_stream_cache.entity_has_changed(user_id, next_id)
self.get_account_data_for_user.invalidate((user_id,))
self.get_global_account_data_by_type_for_user.invalidate(
@ -486,24 +463,3 @@ class AccountDataStore(AccountDataWorkerStore):
# Invalidate the cache for any ignored users which were added or removed.
for ignored_user_id in previously_ignored_users ^ currently_ignored_users:
self._invalidate_cache_and_stream(txn, self.ignored_by, (ignored_user_id,))
async def _update_max_stream_id(self, next_id: int) -> None:
"""Update the max stream_id
Args:
next_id: The the revision to advance to.
"""
# Note: This is only here for backwards compat to allow admins to
# roll back to a previous Synapse version. Next time we update the
# database version we can remove this table.
def _update(txn):
update_max_id_sql = (
"UPDATE account_data_max_stream_id"
" SET stream_id = ?"
" WHERE stream_id < ?"
)
txn.execute(update_max_id_sql, (next_id, next_id))
await self.db_pool.runInteraction("update_account_data_max_stream_id", _update)

17
synapse/storage/databases/main/schema/delta/59/04drop_account_data.sql Normal file
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@ -0,0 +1,17 @@
/* Copyright 2021 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 is no longer used and was only kept until we bumped the schema version.
DROP TABLE IF EXISTS account_data_max_stream_id;

17
synapse/storage/databases/main/schema/delta/59/05cache_invalidation.sql Normal file
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@ -0,0 +1,17 @@
/* Copyright 2021 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 is no longer used and was only kept until we bumped the schema version.
DROP TABLE IF EXISTS cache_invalidation_stream;

10
synapse/storage/databases/main/tags.py
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@ -255,16 +255,6 @@ class TagsStore(TagsWorkerStore):
self._account_data_stream_cache.entity_has_changed, user_id, next_id
)
# Note: This is only here for backwards compat to allow admins to
# roll back to a previous Synapse version. Next time we update the
# database version we can remove this table.
update_max_id_sql = (
"UPDATE account_data_max_stream_id"
" SET stream_id = ?"
" WHERE stream_id < ?"
)
txn.execute(update_max_id_sql, (next_id, next_id))
update_sql = (
"UPDATE room_tags_revisions"
" SET stream_id = ?"

3
synapse/storage/prepare_database.py
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@ -35,9 +35,6 @@ logger = logging.getLogger(__name__)
# Remember to update this number every time a change is made to database
# schema files, so the users will be informed on server restarts.
# XXX: If you're about to bump this to 59 (or higher) please create an update
# that drops the unused `cache_invalidation_stream` table, as per #7436!
# XXX: Also add an update to drop `account_data_max_stream_id` as per #7656!
SCHEMA_VERSION = 59
dir_path = os.path.abspath(os.path.dirname(__file__))