Synapse 1.72.0rc1 (2022-11-16)

==============================

Please note that we now only support PostgreSQL 11+, because PostgreSQL 10 has reached end-of-life, c.f. our [Deprecation Policy](https://github.com/matrix-org/synapse/blob/develop/docs/deprecation_policy.md).

Features
--------

- Add experimental support for [MSC3912](https://github.com/matrix-org/matrix-spec-proposals/pull/3912): Relation-based redactions. ([\#14260](https://github.com/matrix-org/synapse/issues/14260))
- Build Debian packages for Ubuntu 22.10 (Kinetic Kudu). ([\#14396](https://github.com/matrix-org/synapse/issues/14396))
- Add an [Admin API](https://matrix-org.github.io/synapse/latest/usage/administration/admin_api/index.html) endpoint for user lookup based on third-party ID (3PID). Contributed by @ashfame. ([\#14405](https://github.com/matrix-org/synapse/issues/14405))
- Faster joins: include heroes' membership events in the partial join response, for rooms without a name or canonical alias. ([\#14442](https://github.com/matrix-org/synapse/issues/14442))

Bugfixes
--------

- Faster joins: do not block creation of or queries for room aliases during the resync. ([\#14292](https://github.com/matrix-org/synapse/issues/14292))
- Fix a bug introduced in Synapse 1.64.0rc1 which could cause log spam when fetching events from other homeservers. ([\#14347](https://github.com/matrix-org/synapse/issues/14347))
- Fix a bug introduced in 1.66 which would not send certain pushrules to clients. Contributed by Nico. ([\#14356](https://github.com/matrix-org/synapse/issues/14356))
- Fix a bug introduced in v1.71.0rc1 where the power level event was incorrectly created during initial room creation. ([\#14361](https://github.com/matrix-org/synapse/issues/14361))
- Fix the refresh token endpoint to be under /r0 and /v3 instead of /v1. Contributed by Tulir @ Beeper. ([\#14364](https://github.com/matrix-org/synapse/issues/14364))
- Fix a long-standing bug where Synapse would raise an error when encountering an unrecognised field in a `/sync` filter, instead of ignoring it for forward compatibility. ([\#14369](https://github.com/matrix-org/synapse/issues/14369))
- Fix a background database update, introduced in Synapse 1.64.0, which could cause poor database performance. ([\#14374](https://github.com/matrix-org/synapse/issues/14374))
- Fix PostgreSQL sometimes using table scans for queries against the `event_search` table, taking a long time and a large amount of IO. ([\#14409](https://github.com/matrix-org/synapse/issues/14409))
- Fix rendering of some HTML templates (including emails). Introduced in v1.71.0. ([\#14448](https://github.com/matrix-org/synapse/issues/14448))
- Fix a bug introduced in Synapse 1.70.0 where the background updates to add non-thread unique indexes on receipts could fail when upgrading from 1.67.0 or earlier. ([\#14453](https://github.com/matrix-org/synapse/issues/14453))

Updates to the Docker image
---------------------------

- Add all Stream Writer worker types to `configure_workers_and_start.py`. ([\#14197](https://github.com/matrix-org/synapse/issues/14197))
- Remove references to legacy worker types in the multi-worker Dockerfile. ([\#14294](https://github.com/matrix-org/synapse/issues/14294))

Improved Documentation
----------------------

- Upload documentation PRs to Netlify. ([\#12947](https://github.com/matrix-org/synapse/issues/12947), [\#14370](https://github.com/matrix-org/synapse/issues/14370))
- Add addtional TURN server configuration example based on [eturnal](https://github.com/processone/eturnal) and adjust general TURN server doc structure. ([\#14293](https://github.com/matrix-org/synapse/issues/14293))
- Add example on how to load balance /sync requests. Contributed by [aceArt](https://aceart.de). ([\#14297](https://github.com/matrix-org/synapse/issues/14297))
- Edit sample Nginx reverse proxy configuration to use HTTP/1.1. Contributed by Brad Jones. ([\#14414](https://github.com/matrix-org/synapse/issues/14414))

Deprecations and Removals
-------------------------

- Remove support for PostgreSQL 10. ([\#14392](https://github.com/matrix-org/synapse/issues/14392), [\#14397](https://github.com/matrix-org/synapse/issues/14397))

Internal Changes
----------------

- Run unit tests against Python 3.11. ([\#13812](https://github.com/matrix-org/synapse/issues/13812))
- Add TLS support for generic worker endpoints. ([\#14128](https://github.com/matrix-org/synapse/issues/14128), [\#14455](https://github.com/matrix-org/synapse/issues/14455))
- Switch to a maintained action for installing Rust in CI. ([\#14313](https://github.com/matrix-org/synapse/issues/14313))
- Add override ability to `complement.sh` command line script to request certain types of workers. ([\#14324](https://github.com/matrix-org/synapse/issues/14324))
- Enabling testing of [MSC3874](https://github.com/matrix-org/matrix-spec-proposals/pull/3874) (filtering of `/messages` by relation type) in complement. ([\#14339](https://github.com/matrix-org/synapse/issues/14339))
- Concisely log a failure to resolve state due to missing `prev_events`. ([\#14346](https://github.com/matrix-org/synapse/issues/14346))
- Use a maintained Github action to install Rust. ([\#14351](https://github.com/matrix-org/synapse/issues/14351))
- Cleanup old worker datastore classes. Contributed by Nick @ Beeper (@fizzadar). ([\#14375](https://github.com/matrix-org/synapse/issues/14375))
- Test against PostgreSQL 15 in CI. ([\#14394](https://github.com/matrix-org/synapse/issues/14394))
- Remove unreachable code. ([\#14410](https://github.com/matrix-org/synapse/issues/14410))
- Clean-up event persistence code. ([\#14411](https://github.com/matrix-org/synapse/issues/14411))
- Update docstring to clarify that `get_partial_state_events_batch` does not just give you completely arbitrary partial-state events. ([\#14417](https://github.com/matrix-org/synapse/issues/14417))
- Fix mypy errors introduced by bumping the locked version of `attrs` and `gitpython`. ([\#14433](https://github.com/matrix-org/synapse/issues/14433))
- Make Dependabot only bump Rust deps in the lock file. ([\#14434](https://github.com/matrix-org/synapse/issues/14434))
- Fix an incorrect stub return type for `PushRuleEvaluator.run`. ([\#14451](https://github.com/matrix-org/synapse/issues/14451))
- Improve performance of `/context` in large rooms. ([\#14461](https://github.com/matrix-org/synapse/issues/14461))
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