diff options
Diffstat (limited to 'synapse/storage/database.py')
| -rw-r--r-- | synapse/storage/database.py | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/synapse/storage/database.py b/synapse/storage/database.py index 57cc1d76e0..7455326ed3 100644 --- a/synapse/storage/database.py +++ b/synapse/storage/database.py @@ -702,6 +702,7 @@ class DatabasePool: func: Callable[..., R], *args: Any, db_autocommit: bool = False, + isolation_level: Optional[int] = None, **kwargs: Any, ) -> R: """Starts a transaction on the database and runs a given function @@ -724,6 +725,7 @@ class DatabasePool: called multiple times if the transaction is retried, so must correctly handle that case. + isolation_level: Set the server isolation level for this transaction. args: positional args to pass to `func` kwargs: named args to pass to `func` @@ -763,6 +765,7 @@ class DatabasePool: func: Callable[..., R], *args: Any, db_autocommit: bool = False, + isolation_level: Optional[int] = None, **kwargs: Any, ) -> R: """Wraps the .runWithConnection() method on the underlying db_pool. @@ -775,6 +778,7 @@ class DatabasePool: db_autocommit: Whether to run the function in "autocommit" mode, i.e. outside of a transaction. This is useful for transaction that are only a single query. Currently only affects postgres. + isolation_level: Set the server isolation level for this transaction. kwargs: named args to pass to `func` Returns: @@ -834,6 +838,10 @@ class DatabasePool: try: if db_autocommit: self.engine.attempt_to_set_autocommit(conn, True) + if isolation_level is not None: + self.engine.attempt_to_set_isolation_level( + conn, isolation_level + ) db_conn = LoggingDatabaseConnection( conn, self.engine, "runWithConnection" @@ -842,6 +850,8 @@ class DatabasePool: finally: if db_autocommit: self.engine.attempt_to_set_autocommit(conn, False) + if isolation_level: + self.engine.attempt_to_set_isolation_level(conn, None) return await make_deferred_yieldable( self._db_pool.runWithConnection(inner_func, *args, **kwargs) |