Synapse 1.6.0 released

2019-11-26 — General — Neil Johnson

Synapse 1.6.0 has landed and is here to brighten your day!

1.6.0's most notable feature is that of label based filtering. It allows for messages to be tagged with a given label so that clients can filter on the label, this means that clients can subscribe to specific topics in a room, such as #lunch.

Completely separately, from here on in new rooms will be version 5 by default, all this means in practice is that servers will respect server signing key validity periods. This won't make a lot of difference in day to day operation, but it is an important security consideration and we now have sufficient penetration across the federation to make version 5 the default.

Aside from that there are a bunch of bug fixes and improvements, including fixing a bug that in some cases prevented messages being decrypted shortly after a restart (#6363) and generally improving the room upgrade experience (#6232, #6235).

As ever, you can get the new update here or any of the sources mentioned at https://github.com/matrix-org/synapse. Also, check out our Synapse installation guide page

The changelog since 1.5.1 follows:

Synapse 1.6.0 (2019-11-26)

Bugfixes

  • Fix phone home stats reporting. (#6418)

Synapse 1.6.0rc2 (2019-11-25)

Bugfixes

  • Fix a bug which could cause the background database update hander for event labels to get stuck in a loop raising exceptions. (#6407)

Synapse 1.6.0rc1 (2019-11-20)

Features

  • Add federation support for cross-signing. (#5727)
  • Increase default room version from 4 to 5, thereby enforcing server key validity period checks. (#6220)
  • Add support for outbound http proxying via http_proxy/HTTPS_PROXY env vars. (#6238)
  • Implement label-based filtering on /sync and /messages (MSC2326). (#6301, #6310, #6340)

Bugfixes

  • Fix LruCache callback deduplication for Python 3.8. Contributed by @V02460. (#6213)
  • Remove a room from a server's public rooms list on room upgrade. (#6232, #6235)
  • Delete keys from key backup when deleting backup versions. (#6253)
  • Make notification of cross-signing signatures work with workers. (#6254)
  • Fix exception when remote servers attempt to join a room that they're not allowed to join. (#6278)
  • Prevent errors from appearing on Synapse startup if git is not installed. (#6284)
  • Appservice requests will no longer contain a double slash prefix when the appservice url provided ends in a slash. (#6306)
  • Fix /purge_room admin API. (#6307)
  • Fix the hidden field in the devices table for SQLite versions prior to 3.23.0. (#6313)
  • Fix bug which casued rejected events to be persisted with the wrong room state. (#6320)
  • Fix bug where rc_login ratelimiting would prematurely kick in. (#6335)
  • Prevent the server taking a long time to start up when guest registration is enabled. (#6338)
  • Fix bug where upgrading a guest account to a full user would fail when account validity is enabled. (#6359)
  • Fix to_device stream ID getting reset every time Synapse restarts, which had the potential to cause unable to decrypt errors. (#6363)
  • Fix permission denied error when trying to generate a config file with the docker image. (#6389)

Improved Documentation

  • Contributor documentation now mentions script to run linters. (#6164)
  • Modify CAPTCHA_SETUP.md to update the terms private key and public key to secret key and site key respectively. Contributed by Yash Jipkate. (#6257)
  • Update INSTALL.md Email section to talk about account_threepid_delegates. (#6272)
  • Fix a small typo in account_threepid_delegates configuration option. (#6273)

Internal Changes

  • Add a CI job to test the synapse_port_db script. (#6140, #6276)
  • Convert EventContext to an attrs. (#6218)
  • Move persist_events out from main data store. (#6240, #6300)
  • Reduce verbosity of user/room stats. (#6250)
  • Reduce impact of debug logging. (#6251)
  • Expose some homeserver functionality to spam checkers. (#6259)
  • Change cache descriptors to always return deferreds. (#6263, #6291)
  • Fix incorrect comment regarding the functionality of an if statement. (#6269)
  • Update CI to run isort over the scripts and scripts-dev directories. (#6270)
  • Replace every instance of logger.warn method with logger.warning as the former is deprecated. (#6271, #6314)
  • Port replication http server endpoints to async/await. (#6274)
  • Port room rest handlers to async/await. (#6275)
  • Remove redundant CLI parameters on CI's flake8 step. (#6277)
  • Port federation_server.py to async/await. (#6279)
  • Port receipt and read markers to async/wait. (#6280)
  • Split out state storage into separate data store. (#6294, #6295)
  • Refactor EventContext for clarity. (#6298)
  • Update the version of black used to 19.10b0. (#6304)
  • Add some documentation about worker replication. (#6305)
  • Move admin endpoints into separate files. Contributed by Awesome Technologies Innovationslabor GmbH. (#6308)
  • Document the use of lint.sh for code style enforcement & extend it to run on specified paths only. (#6312)
  • Add optional python dependencies and dependant binary libraries to snapcraft packaging. (#6317)
  • Remove the dependency on psutil and replace functionality with the stdlib resource module. (#6318, #6336)
  • Improve documentation for EventContext fields. (#6319)
  • Add some checks that we aren't using state from rejected events. (#6330)
  • Add continuous integration for python 3.8. (#6341)
  • Correct spacing/case of various instances of the word "homeserver". (#6357)
  • Temporarily blacklist the failing unit test PurgeRoomTestCase.test_purge_room. (#6361)