From e3a373f0023e99bdd2ff9bd37ded3571904b07cb Mon Sep 17 00:00:00 2001 From: Matthew Hodgson Date: Wed, 25 Apr 2018 14:58:43 +0100 Subject: [PATCH 1/4] remove duplicates from groups tables and rename inconsistently named indexes. Based on https://github.com/matrix-org/synapse/pull/3128 - thanks @vurpo\! --- .../schema/delta/48/group_unique_indexes.sql | 34 +++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 synapse/storage/schema/delta/48/group_unique_indexes.sql diff --git a/synapse/storage/schema/delta/48/group_unique_indexes.sql b/synapse/storage/schema/delta/48/group_unique_indexes.sql new file mode 100644 index 0000000000..9ea7a8f2e6 --- /dev/null +++ b/synapse/storage/schema/delta/48/group_unique_indexes.sql @@ -0,0 +1,34 @@ +/* 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; From 42c89c8215533e3ef48cf8c9bf33595d4826b905 Mon Sep 17 00:00:00 2001 From: Matthew Hodgson Date: Sat, 28 Apr 2018 22:27:30 +0100 Subject: [PATCH 2/4] make it work with sqlite --- .../schema/delta/48/group_unique_indexes.py | 54 +++++++++++++++++++ .../schema/delta/48/group_unique_indexes.sql | 34 ------------ 2 files changed, 54 insertions(+), 34 deletions(-) create mode 100644 synapse/storage/schema/delta/48/group_unique_indexes.py delete mode 100644 synapse/storage/schema/delta/48/group_unique_indexes.sql diff --git a/synapse/storage/schema/delta/48/group_unique_indexes.py b/synapse/storage/schema/delta/48/group_unique_indexes.py new file mode 100644 index 0000000000..c1f5881b3e --- /dev/null +++ b/synapse/storage/schema/delta/48/group_unique_indexes.py @@ -0,0 +1,54 @@ +# 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 diff --git a/synapse/storage/schema/delta/48/group_unique_indexes.sql b/synapse/storage/schema/delta/48/group_unique_indexes.sql deleted file mode 100644 index 9ea7a8f2e6..0000000000 --- a/synapse/storage/schema/delta/48/group_unique_indexes.sql +++ /dev/null @@ -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; From 006e18b6bbca0721e4de957e641ef64a2f0903cf Mon Sep 17 00:00:00 2001 From: Matthew Hodgson Date: Sat, 28 Apr 2018 22:32:24 +0100 Subject: [PATCH 3/4] pep8 --- synapse/storage/schema/delta/48/group_unique_indexes.py | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/synapse/storage/schema/delta/48/group_unique_indexes.py b/synapse/storage/schema/delta/48/group_unique_indexes.py index c1f5881b3e..b653a987b1 100644 --- a/synapse/storage/schema/delta/48/group_unique_indexes.py +++ b/synapse/storage/schema/delta/48/group_unique_indexes.py @@ -32,23 +32,25 @@ 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" + rowid = "ctid" if isinstance(database_engine, PostgresEngine) else "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)); + """ % (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)); + """ % (rowid, rowid)) for statement in get_statements(FIX_INDEXES.splitlines()): cur.execute(statement) + def run_upgrade(*args, **kwargs): pass From adaf3ec87fe59c59ad533cab99b5f2b1d455ab08 Mon Sep 17 00:00:00 2001 From: Matthew Hodgson Date: Sat, 28 Apr 2018 22:39:15 +0100 Subject: [PATCH 4/4] fix missing import --- synapse/storage/schema/delta/48/group_unique_indexes.py | 1 + 1 file changed, 1 insertion(+) diff --git a/synapse/storage/schema/delta/48/group_unique_indexes.py b/synapse/storage/schema/delta/48/group_unique_indexes.py index b653a987b1..2233af87d7 100644 --- a/synapse/storage/schema/delta/48/group_unique_indexes.py +++ b/synapse/storage/schema/delta/48/group_unique_indexes.py @@ -13,6 +13,7 @@ # limitations under the License. from synapse.storage.engines import PostgresEngine +from synapse.storage.prepare_database import get_statements FIX_INDEXES = """ -- rebuild indexes as uniques