diff options
| -rw-r--r-- | changelog.d/14650.bugfix | 2 | ||||
| -rw-r--r-- | synapse/storage/background_updates.py | 55 | ||||
| -rw-r--r-- | synapse/storage/databases/main/receipts.py | 51 |
3 files changed, 60 insertions, 48 deletions
diff --git a/changelog.d/14650.bugfix b/changelog.d/14650.bugfix new file mode 100644 index 0000000000..5e18641bf7 --- /dev/null +++ b/changelog.d/14650.bugfix @@ -0,0 +1,2 @@ +Fix a bug introduced in Synapse 1.72.0 where the background updates to add non-thread unique indexes on receipts would fail if they were previously interrupted. + diff --git a/synapse/storage/background_updates.py b/synapse/storage/background_updates.py index 2056ecb2c3..a99aea8926 100644 --- a/synapse/storage/background_updates.py +++ b/synapse/storage/background_updates.py @@ -544,6 +544,48 @@ class BackgroundUpdater: The named index will be dropped upon completion of the new index. """ + async def updater(progress: JsonDict, batch_size: int) -> int: + await self.create_index_in_background( + index_name=index_name, + table=table, + columns=columns, + where_clause=where_clause, + unique=unique, + psql_only=psql_only, + replaces_index=replaces_index, + ) + await self._end_background_update(update_name) + return 1 + + self._background_update_handlers[update_name] = _BackgroundUpdateHandler( + updater, oneshot=True + ) + + async def create_index_in_background( + self, + index_name: str, + table: str, + columns: Iterable[str], + where_clause: Optional[str] = None, + unique: bool = False, + psql_only: bool = False, + replaces_index: Optional[str] = None, + ) -> None: + """Add an index in the background. + + Args: + update_name: update_name to register for + index_name: name of index to add + table: table to add index to + columns: columns/expressions to include in index + where_clause: A WHERE clause to specify a partial unique index. + unique: true to make a UNIQUE index + psql_only: true to only create this index on psql databases (useful + for virtual sqlite tables) + replaces_index: The name of an index that this index replaces. + The named index will be dropped upon completion of the new index. + """ + def create_index_psql(conn: Connection) -> None: conn.rollback() # postgres insists on autocommit for the index @@ -618,16 +660,11 @@ class BackgroundUpdater: else: runner = create_index_sqlite - async def updater(progress: JsonDict, batch_size: int) -> int: - if runner is not None: - logger.info("Adding index %s to %s", index_name, table) - await self.db_pool.runWithConnection(runner) - await self._end_background_update(update_name) - return 1 + if runner is None: + return - self._background_update_handlers[update_name] = _BackgroundUpdateHandler( - updater, oneshot=True - ) + logger.info("Adding index %s to %s", index_name, table) + await self.db_pool.runWithConnection(runner) async def _end_background_update(self, update_name: str) -> None: """Removes a completed background update task from the queue. diff --git a/synapse/storage/databases/main/receipts.py b/synapse/storage/databases/main/receipts.py index a580e4bdda..e06725f69c 100644 --- a/synapse/storage/databases/main/receipts.py +++ b/synapse/storage/databases/main/receipts.py @@ -924,39 +924,6 @@ class ReceiptsBackgroundUpdateStore(SQLBaseStore): return batch_size - async def _create_receipts_index(self, index_name: str, table: str) -> None: - """Adds a unique index on `(room_id, receipt_type, user_id)` to the given - receipts table, for non-thread receipts.""" - - def _create_index(conn: LoggingDatabaseConnection) -> None: - conn.rollback() - - # we have to set autocommit, because postgres refuses to - # CREATE INDEX CONCURRENTLY without it. - if isinstance(self.database_engine, PostgresEngine): - conn.set_session(autocommit=True) - - try: - c = conn.cursor() - - # Now that the duplicates are gone, we can create the index. - concurrently = ( - "CONCURRENTLY" - if isinstance(self.database_engine, PostgresEngine) - else "" - ) - sql = f""" - CREATE UNIQUE INDEX {concurrently} {index_name} - ON {table}(room_id, receipt_type, user_id) - WHERE thread_id IS NULL - """ - c.execute(sql) - finally: - if isinstance(self.database_engine, PostgresEngine): - conn.set_session(autocommit=False) - - await self.db_pool.runWithConnection(_create_index) - async def _background_receipts_linearized_unique_index( self, progress: dict, batch_size: int ) -> int: @@ -999,9 +966,12 @@ class ReceiptsBackgroundUpdateStore(SQLBaseStore): _remote_duplicate_receipts_txn, ) - await self._create_receipts_index( - "receipts_linearized_unique_index", - "receipts_linearized", + await self.db_pool.updates.create_index_in_background( + index_name="receipts_linearized_unique_index", + table="receipts_linearized", + columns=["room_id", "receipt_type", "user_id"], + where_clause="thread_id IS NULL", + unique=True, ) await self.db_pool.updates._end_background_update( @@ -1050,9 +1020,12 @@ class ReceiptsBackgroundUpdateStore(SQLBaseStore): _remote_duplicate_receipts_txn, ) - await self._create_receipts_index( - "receipts_graph_unique_index", - "receipts_graph", + await self.db_pool.updates.create_index_in_background( + index_name="receipts_graph_unique_index", + table="receipts_graph", + columns=["room_id", "receipt_type", "user_id"], + where_clause="thread_id IS NULL", + unique=True, ) await self.db_pool.updates._end_background_update( |