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+++ title = "Synapse 1.22.0 released" date = "2020-10-27T17:01:23Z" path = "/blog/2020/10/27/synapse-1-22-0-released"

[taxonomies] author = ["Dan Callahan"] category = ["Releases"] +++

Synapse 1.22.0 now available!

This release focused on improving Synapse's horizontal scalability, including:

  • Support for running background tasks in separate worker processes.
  • Fixes to sharded event persisters, which were experimentally introduced in 1.21.0.
  • Fixing a message duplication bug with worker-based deployments. (#8476)

Synapse 1.22.0 also has a few other notable changes:

  • Defaulting to version 6 rooms, per MSC2788.
  • Initial support for three new experimental MSCs:
    • MSC2732: Supporting olm fallback keys
    • MSC2697: Supporting device dehydration
    • MSC2409: Allowing appservices to receive ephemeral events like read receipts, presence, and typing indicators.
  • Multi-arch Docker images, covering arm64 and arm/v7 in addition to amd64.

Installation instructions are available on GitHub, as is the v1.22.0 release tag.

Lastly, Synapse is a Free and Open Source Software project, and we'd like to extend our thanks to everyone who contributed to this release, including @Akkowicz, @BBBSnowball, @maquis196, and @samuel-p.

The full changelog for 1.22.0 is as follows:

Synapse 1.22.0 (2020-10-27)

No significant changes.

Synapse 1.22.0rc2 (2020-10-26)

Bugfixes

  • Fix bugs where ephemeral events were not sent to appservices. Broke in v1.22.0rc1. (#8648, #8656)
  • Fix user_daily_visits table to not have duplicate rows per user/device due to multiple user agents. Broke in v1.22.0rc1. (#8654)

Synapse 1.22.0rc1 (2020-10-22)

Features

  • Add a configuration option for always using the "userinfo endpoint" for OpenID Connect. This fixes support for some identity providers, e.g. GitLab. Contributed by Benjamin Koch. (#7658)
  • Add ability for ThirdPartyEventRules modules to query and manipulate whether a room is in the public rooms directory. (#8292, #8467)
  • Add support for olm fallback keys (MSC2732). (#8312, #8501)
  • Add support for running background tasks in a separate worker process. (#8369, #8458, #8489, #8513, #8544, #8599)
  • Add support for device dehydration (MSC2697). (#8380)
  • Add support for MSC2409, which allows sending typing, read receipts, and presence events to appservices. (#8437, #8590)
  • Change default room version to "6", per MSC2788. (#8461)
  • Add the ability to send non-membership events into a room via the ModuleApi. (#8479)
  • Increase default upload size limit from 10M to 50M. Contributed by @Akkowicz. (#8502)
  • Add support for modifying event content in ThirdPartyRules modules. (#8535, #8564)

Bugfixes

  • Fix a longstanding bug where invalid ignored users in account data could break clients. (#8454)
  • Fix a bug where backfilling a room with an event that was missing the redacts field would break. (#8457)
  • Don't attempt to respond to some requests if the client has already disconnected. (#8465)
  • Fix message duplication if something goes wrong after persisting the event. (#8476)
  • Fix incremental sync returning an incorrect prev_batch token in timeline section, which when used to paginate returned events that were included in the incremental sync. Broken since v0.16.0. (#8486)
  • Expose the uk.half-shot.msc2778.login.application_service to clients from the login API. This feature was added in v1.21.0, but was not exposed as a potential login flow. (#8504)
  • Fix error code for /profile/{userId}/displayname to be M_BAD_JSON. (#8517)
  • Fix a bug introduced in v1.7.0 that could cause Synapse to insert values from non-state m.room.retention events into the room_retention database table. (#8527)
  • Fix not sending events over federation when using sharded event writers. (#8536)
  • Fix a long standing bug where email notifications for encrypted messages were blank. (#8545)
  • Fix increase in the number of There was no active span... errors logged when using OpenTracing. (#8567)
  • Fix a bug that prevented errors encountered during execution of the synapse_port_db from being correctly printed. (#8585)
  • Fix appservice transactions to only include a maximum of 100 persistent and 100 ephemeral events. (#8606)

Updates to the Docker image

  • Added multi-arch support (arm64,arm/v7) for the docker images. Contributed by @maquis196. (#7921)
  • Add support for passing commandline args to the synapse process. Contributed by @samuel-p. (#8390)

Improved Documentation

  • Update the directions for using the manhole with coroutines. (#8462)
  • Improve readme by adding new shield.io badges. (#8493)
  • Added note about docker in manhole.md regarding which ip address to bind to. Contributed by @Maquis196. (#8526)
  • Document the new behaviour of the allowed_lifetime_min and allowed_lifetime_max settings in the room retention configuration. (#8529)

Deprecations and Removals

  • Drop unused device_max_stream_id table. (#8589)

Internal Changes

  • Check for unreachable code with mypy. (#8432)
  • Add unit test for event persister sharding. (#8433)
  • Allow events to be sent to clients sooner when using sharded event persisters. (#8439, #8488, #8496, #8499)
  • Configure public_baseurl when using demo scripts. (#8443)
  • Add SQL logging on queries that happen during startup. (#8448)
  • Speed up unit tests when using PostgreSQL. (#8450)
  • Remove redundant database loads of stream_ordering for events we already have. (#8452)
  • Reduce inconsistencies between codepaths for membership and non-membership events. (#8463)
  • Combine SpamCheckerApi with the more generic ModuleApi. (#8464)
  • Additional testing for ThirdPartyEventRules. (#8468)
  • Add -d option to ./scripts-dev/lint.sh to lint files that have changed since the last git commit. (#8472)
  • Unblacklist some sytests. (#8474)
  • Include the log level in the phone home stats. (#8477)
  • Remove outdated sphinx documentation, scripts and configuration. (#8480)
  • Clarify error message when plugin config parsers raise an error. (#8492)
  • Remove the deprecated Handlers object. (#8494)
  • Fix a threadsafety bug in unit tests. (#8497)
  • Add user agent to user_daily_visits table. (#8503)
  • Add type hints to various parts of the code base. (#8407, #8505, #8507, #8547, #8562, #8609)
  • Remove unused code from the test framework. (#8514)
  • Apply some internal fixes to the HomeServer class to make its code more idiomatic and statically-verifiable. (#8515)
  • Factor out common code between RoomMemberHandler._locally_reject_invite and EventCreationHandler.create_event. (#8537)
  • Improve database performance by executing more queries without starting transactions. (#8542)
  • Rename Cache to DeferredCache, to better reflect its purpose. (#8548)
  • Move metric registration code down into LruCache. (#8561, #8591)
  • Replace DeferredCache with the lighter-weight LruCache where possible. (#8563)
  • Add virtualenv-generated folders to .gitignore. (#8566)
  • Add get_immediate method to DeferredCache. (#8568)
  • Fix mypy not properly checking across the codebase, additionally, fix a typing assertion error in handlers/auth.py. (#8569)
  • Fix synmark benchmark runner. (#8571)
  • Modify DeferredCache.get() to return Deferreds instead of ObservableDeferreds. (#8572)
  • Adjust a protocol-type definition to fit sqlite3 assertions. (#8577)
  • Support macOS on the synmark benchmark runner. (#8578)
  • Update mypy static type checker to 0.790. (#8583, #8600)
  • Re-organize the structured logging code to separate the TCP transport handling from the JSON formatting. (#8587)
  • Remove extraneous unittest logging decorators from unit tests. (#8592)
  • Minor optimisations in caching code. (#8593, #8594)