78 lines
3.3 KiB
Python
78 lines
3.3 KiB
Python
# Copyright 2021 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.
|
|
|
|
SCHEMA_VERSION = 69 # remember to update the list below when updating
|
|
"""Represents the expectations made by the codebase about the database schema
|
|
|
|
This should be incremented whenever the codebase changes its requirements on the
|
|
shape of the database schema (even if those requirements are backwards-compatible with
|
|
older versions of Synapse).
|
|
|
|
See https://matrix-org.github.io/synapse/develop/development/database_schema.html
|
|
for more information on how this works.
|
|
|
|
Changes in SCHEMA_VERSION = 61:
|
|
- The `user_stats_historical` and `room_stats_historical` tables are not written and
|
|
are not read (previously, they were written but not read).
|
|
- MSC2716: Add `insertion_events` and `insertion_event_edges` tables to keep track
|
|
of insertion events in order to navigate historical chunks of messages.
|
|
- MSC2716: Add `chunk_events` table to track how the chunk is labeled and
|
|
determines which insertion event it points to.
|
|
|
|
Changes in SCHEMA_VERSION = 62:
|
|
- MSC2716: Add `insertion_event_extremities` table that keeps track of which
|
|
insertion events need to be backfilled.
|
|
|
|
Changes in SCHEMA_VERSION = 63:
|
|
- The `public_room_list_stream` table is not written nor read to
|
|
(previously, it was written and read to, but not for any significant purpose).
|
|
https://github.com/matrix-org/synapse/pull/10565
|
|
|
|
Changes in SCHEMA_VERSION = 64:
|
|
- MSC2716: Rename related tables and columns from "chunks" to "batches".
|
|
|
|
Changes in SCHEMA_VERSION = 65:
|
|
- MSC2716: Remove unique event_id constraint from insertion_event_edges
|
|
because an insertion event can have multiple edges.
|
|
- Remove unused tables `user_stats_historical` and `room_stats_historical`.
|
|
|
|
Changes in SCHEMA_VERSION = 66:
|
|
- Queries on state_key columns are now disambiguated (ie, the codebase can handle
|
|
the `events` table having a `state_key` column).
|
|
|
|
Changes in SCHEMA_VERSION = 67:
|
|
- state_events.prev_state is no longer written to.
|
|
|
|
Changes in SCHEMA_VERSION = 68:
|
|
- event_reference_hashes is no longer read.
|
|
- `events` has `state_key` and `rejection_reason` columns, which are populated for
|
|
new events.
|
|
|
|
Changes in SCHEMA_VERSION = 69:
|
|
- We now write to `device_lists_changes_in_room` table.
|
|
- Use sequence to generate future `application_services_txns.txn_id`s
|
|
"""
|
|
|
|
|
|
SCHEMA_COMPAT_VERSION = (
|
|
# we now have `state_key` columns in both `events` and `state_events`, so
|
|
# now incompatible with synapses wth SCHEMA_VERSION < 66.
|
|
66
|
|
)
|
|
"""Limit on how far the synapse codebase can be rolled back without breaking db compat
|
|
|
|
This value is stored in the database, and checked on startup. If the value in the
|
|
database is greater than SCHEMA_VERSION, then Synapse will refuse to start.
|
|
"""
|