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-rw-r--r--synapse/storage/schema/main/delta/78/02_validate_and_update_user_filters.py4
-rw-r--r--synapse/storage/schema/main/delta/78/03_remove_unused_indexes_user_filters.py65
-rw-r--r--synapse/storage/schema/main/delta/78/04_add_full_user_id_index_user_filters.py25
3 files changed, 91 insertions, 3 deletions
diff --git a/synapse/storage/schema/main/delta/78/02_validate_and_update_user_filters.py b/synapse/storage/schema/main/delta/78/02_validate_and_update_user_filters.py
index 8ef63335e7..e148ed26f2 100644
--- a/synapse/storage/schema/main/delta/78/02_validate_and_update_user_filters.py
+++ b/synapse/storage/schema/main/delta/78/02_validate_and_update_user_filters.py
@@ -61,9 +61,7 @@ def run_upgrade(
             full_user_id text NOT NULL,
             user_id text NOT NULL,
             filter_id bigint NOT NULL,
-            filter_json bytea NOT NULL,
-            UNIQUE (full_user_id),
-            UNIQUE (user_id)
+            filter_json bytea NOT NULL
         )
         """
         cur.execute(create_sql)
diff --git a/synapse/storage/schema/main/delta/78/03_remove_unused_indexes_user_filters.py b/synapse/storage/schema/main/delta/78/03_remove_unused_indexes_user_filters.py
new file mode 100644
index 0000000000..f5ba1c3fd4
--- /dev/null
+++ b/synapse/storage/schema/main/delta/78/03_remove_unused_indexes_user_filters.py
@@ -0,0 +1,65 @@
+# Copyright 2023 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.
+from synapse.config.homeserver import HomeServerConfig
+from synapse.storage.database import LoggingTransaction
+from synapse.storage.engines import BaseDatabaseEngine, Sqlite3Engine
+
+
+def run_update(
+    cur: LoggingTransaction,
+    database_engine: BaseDatabaseEngine,
+    config: HomeServerConfig,
+) -> None:
+    """
+    Fix to drop unused indexes caused by incorrectly adding UNIQUE constraint to
+    columns `user_id` and `full_user_id` of table `user_filters` in previous migration.
+    """
+
+    if isinstance(database_engine, Sqlite3Engine):
+        cur.execute("DROP TABLE IF EXISTS temp_user_filters")
+        create_sql = """
+        CREATE TABLE temp_user_filters (
+            full_user_id text NOT NULL,
+            user_id text NOT NULL,
+            filter_id bigint NOT NULL,
+            filter_json bytea NOT NULL
+        )
+        """
+        cur.execute(create_sql)
+
+        copy_sql = """
+        INSERT INTO temp_user_filters (
+            user_id,
+            filter_id,
+            filter_json,
+            full_user_id)
+            SELECT user_id, filter_id, filter_json, full_user_id FROM user_filters
+        """
+        cur.execute(copy_sql)
+
+        drop_sql = """
+        DROP TABLE user_filters
+        """
+        cur.execute(drop_sql)
+
+        rename_sql = """
+        ALTER TABLE temp_user_filters RENAME to user_filters
+        """
+        cur.execute(rename_sql)
+
+        index_sql = """
+        CREATE UNIQUE INDEX IF NOT EXISTS user_filters_unique ON
+        user_filters (user_id, filter_id)
+        """
+        cur.execute(index_sql)
diff --git a/synapse/storage/schema/main/delta/78/04_add_full_user_id_index_user_filters.py b/synapse/storage/schema/main/delta/78/04_add_full_user_id_index_user_filters.py
new file mode 100644
index 0000000000..97fecc2bd9
--- /dev/null
+++ b/synapse/storage/schema/main/delta/78/04_add_full_user_id_index_user_filters.py
@@ -0,0 +1,25 @@
+# Copyright 2023 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.
+
+from synapse.storage.database import LoggingTransaction
+from synapse.storage.engines import BaseDatabaseEngine, Sqlite3Engine
+
+
+def run_create(cur: LoggingTransaction, database_engine: BaseDatabaseEngine) -> None:
+    if isinstance(database_engine, Sqlite3Engine):
+        idx_sql = """
+        CREATE UNIQUE INDEX IF NOT EXISTS user_filters_full_user_id_unique ON
+        user_filters (full_user_id, filter_id)
+        """
+        cur.execute(idx_sql)