58 lines
2.0 KiB
Python
58 lines
2.0 KiB
Python
# Copyright 2018 New Vector Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from synapse.storage.engines import PostgresEngine
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from synapse.storage.prepare_database import get_statements
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FIX_INDEXES = """
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-- rebuild indexes as uniques
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DROP INDEX groups_invites_g_idx;
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CREATE UNIQUE INDEX group_invites_g_idx ON group_invites(group_id, user_id);
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DROP INDEX groups_users_g_idx;
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CREATE UNIQUE INDEX group_users_g_idx ON group_users(group_id, user_id);
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-- rename other indexes to actually match their table names..
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DROP INDEX groups_users_u_idx;
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CREATE INDEX group_users_u_idx ON group_users(user_id);
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DROP INDEX groups_invites_u_idx;
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CREATE INDEX group_invites_u_idx ON group_invites(user_id);
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DROP INDEX groups_rooms_g_idx;
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CREATE UNIQUE INDEX group_rooms_g_idx ON group_rooms(group_id, room_id);
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DROP INDEX groups_rooms_r_idx;
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CREATE INDEX group_rooms_r_idx ON group_rooms(room_id);
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"""
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def run_create(cur, database_engine, *args, **kwargs):
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rowid = "ctid" if isinstance(database_engine, PostgresEngine) else "rowid"
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# remove duplicates from group_users & group_invites tables
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cur.execute("""
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DELETE FROM group_users WHERE %s NOT IN (
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SELECT min(%s) FROM group_users GROUP BY group_id, user_id
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);
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""" % (rowid, rowid))
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cur.execute("""
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DELETE FROM group_invites WHERE %s NOT IN (
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SELECT min(%s) FROM group_invites GROUP BY group_id, user_id
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);
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""" % (rowid, rowid))
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for statement in get_statements(FIX_INDEXES.splitlines()):
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cur.execute(statement)
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def run_upgrade(*args, **kwargs):
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pass
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