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Reintroduce #14376, with bugfix for monoliths (#14468)

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* Add tests for StreamIdGenerator

* Drive-by: annotate all defs

* Revert "Revert "Remove slaved id tracker (#14376)" (#14463)"

This reverts commit d63814fd73, which in
turn reverted 36097e88c4. This restores
the latter.

* Fix StreamIdGenerator not handling unpersisted IDs

Spotted by @erikjohnston.

Closes #14456.

* Changelog

Co-authored-by: Nick Mills-Barrett <nick@fizzadar.com>
Co-authored-by: Erik Johnston <erik@matrix.org>
This commit is contained in:
David Robertson 2022-11-16 22:16:46 +00:00 • committed by GitHub
parent c15e9a0edb
commit 115f0eb233
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14 changed files with 230 additions and 186 deletions
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13
synapse/replication/slave/__init__.py
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@ -1,13 +0,0 @@
# Copyright 2016 OpenMarket 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.

13
synapse/replication/slave/storage/__init__.py
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@ -1,13 +0,0 @@
# Copyright 2016 OpenMarket 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.

50
synapse/replication/slave/storage/_slaved_id_tracker.py
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@ -1,50 +0,0 @@
# Copyright 2016 OpenMarket 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 typing import List, Optional, Tuple
from synapse.storage.database import LoggingDatabaseConnection
from synapse.storage.util.id_generators import AbstractStreamIdTracker, _load_current_id
class SlavedIdTracker(AbstractStreamIdTracker):
"""Tracks the "current" stream ID of a stream with a single writer.
See `AbstractStreamIdTracker` for more details.
Note that this class does not work correctly when there are multiple
writers.
"""
def __init__(
self,
db_conn: LoggingDatabaseConnection,
table: str,
column: str,
extra_tables: Optional[List[Tuple[str, str]]] = None,
step: int = 1,
):
self.step = step
self._current = _load_current_id(db_conn, table, column, step)
if extra_tables:
for table, column in extra_tables:
self.advance(None, _load_current_id(db_conn, table, column))
def advance(self, instance_name: Optional[str], new_id: int) -> None:
self._current = (max if self.step > 0 else min)(self._current, new_id)
def get_current_token(self) -> int:
return self._current
def get_current_token_for_writer(self, instance_name: str) -> int:
return self.get_current_token()