diff options
Diffstat (limited to 'synapse/storage/util')
| -rw-r--r-- | synapse/storage/util/id_generators.py | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/synapse/storage/util/id_generators.py b/synapse/storage/util/id_generators.py index 2a66b3ad4e..1de2b91587 100644 --- a/synapse/storage/util/id_generators.py +++ b/synapse/storage/util/id_generators.py @@ -240,8 +240,12 @@ class MultiWriterIdGenerator: # gaps should be relatively rare it's still worth doing the book keeping # that allows us to skip forwards when there are gapless runs of # positions. + # + # We start at 1 here as a) the first generated stream ID will be 2, and + # b) other parts of the code assume that stream IDs are strictly greater + # than 0. self._persisted_upto_position = ( - min(self._current_positions.values()) if self._current_positions else 0 + min(self._current_positions.values()) if self._current_positions else 1 ) self._known_persisted_positions = [] # type: List[int] @@ -398,9 +402,7 @@ class MultiWriterIdGenerator: equal to it have been successfully persisted. """ - # Currently we don't support this operation, as it's not obvious how to - # condense the stream positions of multiple writers into a single int. - raise NotImplementedError() + return self.get_persisted_upto_position() def get_current_token_for_writer(self, instance_name: str) -> int: """Returns the position of the given writer. |