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make it work with sqlite

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This commit is contained in:
Matthew Hodgson 2018-04-28 22:27:30 +01:00
parent e3a373f002
commit 42c89c8215
2 changed files with 54 additions and 34 deletions
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54
synapse/storage/schema/delta/48/group_unique_indexes.py Normal file
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# Copyright 2018 New Vector Ltd
#
# 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.
from synapse.storage.engines import PostgresEngine
FIX_INDEXES = """
-- rebuild indexes as uniques
DROP INDEX groups_invites_g_idx;
CREATE UNIQUE INDEX group_invites_g_idx ON group_invites(group_id, user_id);
DROP INDEX groups_users_g_idx;
CREATE UNIQUE INDEX group_users_g_idx ON group_users(group_id, user_id);
-- rename other indexes to actually match their table names..
DROP INDEX groups_users_u_idx;
CREATE INDEX group_users_u_idx ON group_users(user_id);
DROP INDEX groups_invites_u_idx;
CREATE INDEX group_invites_u_idx ON group_invites(user_id);
DROP INDEX groups_rooms_g_idx;
CREATE UNIQUE INDEX group_rooms_g_idx ON group_rooms(group_id, room_id);
DROP INDEX groups_rooms_r_idx;
CREATE INDEX group_rooms_r_idx ON group_rooms(room_id);
"""
def run_create(cur, database_engine, *args, **kwargs):
rowid = "ctid" if isinstance(database_engine, PostgresEngine) then "rowid"
# remove duplicates from group_users & group_invites tables
cur.execute("""
DELETE FROM group_users WHERE %s NOT IN (
SELECT min(%s) FROM group_users GROUP BY group_id, user_id
);
""" % (rowid, rowid));
cur.execute("""
DELETE FROM group_invites WHERE %s NOT IN (
SELECT min(%s) FROM group_invites GROUP BY group_id, user_id
);
""" % (rowid, rowid));
for statement in get_statements(FIX_INDEXES.splitlines()):
cur.execute(statement)
def run_upgrade(*args, **kwargs):
pass

34
synapse/storage/schema/delta/48/group_unique_indexes.sql
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@ -1,34 +0,0 @@
/* Copyright 2018 New Vector Ltd
*
* 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.
*/
-- remove duplicates from group_users table
DELETE FROM group_users WHERE ctid NOT IN (
SELECT min(ctid) FROM group_users GROUP BY group_id, user_id
);
DROP INDEX groups_users_g_idx;
CREATE UNIQUE INDEX group_users_g_idx ON group_users(group_id, user_id);
-- remove duplicates from group_invites table
DELETE FROM group_invites WHERE ctid NOT IN (
SELECT min(ctid) FROM group_invites GROUP BY group_id, user_id
);
DROP INDEX groups_invites_g_idx;
CREATE UNIQUE INDEX group_invites_g_idx ON group_invites(group_id, user_id);
-- rename other indexes to actually match their table names...
ALTER INDEX groups_users_u_idx RENAME TO group_users_u_idx;
ALTER INDEX groups_invites_u_idx RENAME TO group_invites_u_idx;
ALTER INDEX groups_rooms_g_idx RENAME TO group_rooms_g_idx;
ALTER INDEX groups_rooms_r_idx RENAME TO group_rooms_r_idx;