Releases

We released Synapse v0.27.2 today (the first stable release in the 0.27.x series) - it contains loads of work since Synapse v0.26 back in January.  The main highlights are:

• All the perf improvements which we've been landing as we race to keep the matrix.org homeserver in the face of ever-expanding traffic levels over the last few months
• Support for custom storage providers for media repository.
• Ability to limit the email addresses allowed to register on your HS, and ability to limit the homeservers your homeserver is allowed to federate with
• All new purge API - letting you purge history by date as well as by event (and having a nice new async way of doing it)
• Make search work again!!! (by switching from GIST to GIN indexes)

And a few release notes worth calling out:

• The common case for running Synapse is not to run separate workers, but for those that do, be aware that synctl no longer starts the main synapse when using -a option with workers. A new worker file should be added with worker_app: synapse.app.homeserver.
• This release also begins the process of renaming a number of the metrics reported to prometheus. See docs/metrics-howto.rst  Note that the v0.28.0 release will remove the deprecated metric names.

As always, you can get it from https://github.com/matrix-org/synapse/releases/tag/v0.27.2

thanks for flying Matrix!

Changes in synapse v0.27.2 (2018-03-26)

Bug fixes:

• Fix bug which broke TCP replication between workers (PR #3015)

Changes in synapse v0.27.1 (2018-03-26)

Meta release as v0.27.0 temporarily pointed to the wrong commit

Changes in synapse v0.27.0 (2018-03-26)

No changes since v0.27.0-rc2

Changes in synapse v0.27.0-rc2 (2018-03-19)

Pulls in v0.26.1

Bug fixes:

• Fix bug introduced in v0.27.0-rc1 that causes much increased memory usage in state cache (PR #3005)

Changes in synapse v0.27.0-rc1 (2018-03-14)

The common case for running Synapse is not to run separate workers, but for those that do, be aware that synctl no longer starts the main synapse when using -a option with workers. A new worker file should be added with worker_app: synapse.app.homeserver.

This release also begins the process of renaming a number of the metrics reported to prometheus. See docs/metrics-howto.rst <docs/metrics-howto.rst#block-and-response-metrics-renamed-for-0-27-0>_. Note that the v0.28.0 release will remove the deprecated metric names.

Features:

• Add ability for ASes to override message send time (PR #2754)
• Add support for custom storage providers for media repository (PR #2867, #2777, #2783, #2789, #2791, #2804, #2812, #2814, #2857, #2868, #2767)
• Add purge API features, see docs/admin_api/purge_history_api.rst <docs/admin_api/purge_history_api.rst>_ for full details (PR #2858, #2867, #2882, #2946, #2962, #2943)
• Add support for whitelisting 3PIDs that users can register. (PR #2813)
• Add /room/{'{'}id{'}'}/event/{'{'}id{'}'} API (PR #2766)
• Add an admin API to get all the media in a room (PR #2818) Thanks to @turt2live!
• Add federation_domain_whitelist option (PR #2820, #2821)

Changes:

• Continue to factor out processing from main process and into worker processes. See updated docs/workers.rst <docs/metrics-howto.rst>_ (PR #2892 - #2904, #2913, #2920 - #2926, #2947, #2847, #2854, #2872, #2873, #2874, #2928, #2929, #2934, #2856, #2976 - #2984, #2987 - #2989, #2991 - #2993, #2995, #2784)
• Ensure state cache is used when persisting events (PR #2864, #2871, #2802, #2835, #2836, #2841, #2842, #2849)
• Change the default config to bind on both IPv4 and IPv6 on all platforms (PR #2435) Thanks to @silkeh!
• No longer require a specific version of saml2 (PR #2695) Thanks to @okurz!
• Remove verbosity/log_file from generated config (PR #2755)
• Add and improve metrics and logging (PR #2770, #2778, #2785, #2786, #2787, #2793, #2794, #2795, #2809, #2810, #2833, #2834, #2844, #2965, #2927, #2975, #2790, #2796, #2838)
• When using synctl with workers, don't start the main synapse automatically (PR #2774)
• Minor performance improvements (PR #2773, #2792)
• Use a connection pool for non-federation outbound connections (PR #2817)
• Make it possible to run unit tests against postgres (PR #2829)
• Update pynacl dependency to 1.2.1 or higher (PR #2888) Thanks to @bachp!
• Remove ability for AS users to call /events and /sync (PR #2948)
• Use bcrypt.checkpw (PR #2949) Thanks to @krombel!

Bug fixes:

• Fix broken ldap_config config option (PR #2683) Thanks to @seckrv!
• Fix error message when user is not allowed to unban (PR #2761) Thanks to @turt2live!
• Fix publicised groups GET API (singular) over federation (PR #2772)
• Fix user directory when using user_directory_search_all_users config option (PR #2803, #2831)
• Fix error on /publicRooms when no rooms exist (PR #2827)
• Fix bug in quarantine_media (PR #2837)
• Fix url_previews when no Content-Type is returned from URL (PR #2845)
• Fix rare race in sync API when joining room (PR #2944)
• Fix slow event search, switch back from GIST to GIN indexes (PR #2769, #2848)

Hi folks,

Synapse 0.24 is out (currently at 0.24.1)! This is a pretty big release as it includes initial support for Groups, also known as Communities (UI for which is landing currently on Riot/Web and later Riot/Mobile). Groups let you associate together a set of users and rooms, letting you define a community - e.g. +matrix:matrix.org is the community of the core Matrix project itself (whose users are the core Matrix.org team, and whose public rooms are the rooms we officially manage/moderate as Matrix.org).  We'll yell more about Groups once the UI is ready for action in the near future, but the good news is that Synapse should be ready to go (although the API is still fairly experimental and very much evolving).

Other stuff worth calling out in this release includes: massive performance improvements on receiving federation traffic (we now process federation traffic for different rooms in parallel); fixing a major cause of performance issues (caused when processing spurious events for rooms you've actually left); modularising and improving the the spamchecker; @room notification support; backup media repository support; and finally the ability to autojoin new users to a set of rooms on the server!

You can get the latest release from Github as usual; have fun - and thanks for flying Matrix :)

Changes in synapse v0.24.1 (2017-10-24)

Bug fixes:

• Fix updating group profiles over federation (PR #2567)

Changes in synapse v0.24.0 (2017-10-23)

No changes since v0.24.0-rc1

Changes in synapse v0.24.0-rc1 (2017-10-19)

Features:

• Add Group Server (PR #2352, #2363, #2374, #2377, #2378, #2382, #2410, #2426, #2430, #2454, #2471, #2472, #2544)
• Add support for channel notifications (PR #2501)
• Add basic implementation of backup media store (PR #2538)
• Add config option to auto-join new users to rooms (PR #2545)

Changes:

• Make the spam checker a module (PR #2474)
• Delete expired url cache data (PR #2478)
• Ignore incoming events for rooms that we have left (PR #2490)
• Allow spam checker to reject invites too (PR #2492)
• Add room creation checks to spam checker (PR #2495)
• Spam checking: add the invitee to user_may_invite (PR #2502)
• Process events from federation for different rooms in parallel (PR #2520)
• Allow error strings from spam checker (PR #2531)
• Improve error handling for missing files in config (PR #2551)

Bug fixes:

• Fix handling SERVFAILs when doing AAAA lookups for federation (PR #2477)
• Fix incompatibility with newer versions of ujson (PR #2483) Thanks to @jeremycline!
• Fix notification keywords that start/end with non-word chars (PR #2500)
• Fix stack overflow and logcontexts from linearizer (PR #2532)
• Fix 500 error when fields missing from power_levels event (PR #2552)
• Fix 500 error when we get an error handling a PDU (PR #2553)