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Query legacy spaces federation API if the hierarchy API is unavailable. #10583

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Aug 17, 2021
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Query legacy spaces federation API if the hierarchy API is unavailable. #10583

merged 1 commit into from
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@clokep clokep commented Aug 11, 2021 •
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Adds a backwards compatibility path to the room hierarchy federation endpoint by using the /spaces endpoint and translating the results (and throwing some of it away).

The reasoning for wanting this is that the new /hierarchy federation endpoint will not be available on all servers initially, but we want the C-S endpoint to work as expected. This should allow clients to adopt the new endpoint quickly.

Builds on #10569.

Part of #10495.

I did some manual testing of this, but I'm not really sure how to make automated tests for this (as I had to manually run two different versions of Synapse, one which knew of the /hierarchy endpoint and one which did not).

@clokep clokep force-pushed the clokep/spaces-pagination-legacy branch from d640577 to e2a286a Compare August 11, 2021 17:18
@clokep
Attempt to pull from the legacy spaces summary API over federation.
4b1722a 
If the new hierarchy API does not exist on any of the given servers.

This is a backwards compatibility hack since initially not all
servers will support the new API.
@clokep clokep force-pushed the clokep/spaces-pagination-legacy branch from ff0f253 to 4b1722a Compare August 16, 2021 15:45
@clokep clokep requested a review from a team August 16, 2021 16:23
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clokep commented Aug 16, 2021

We can also deem this as not necessary, but it seemed fairly easy and a nice-to-have.

@clokep clokep marked this pull request as ready for review August 16, 2021 16:24
anoadragon453
anoadragon453 reviewed Aug 17, 2021
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Also noticed a typo in this method's docstring: "Performs simple data validates ...".

synapse/federation/federation_client.py
Comment on lines +1415 to +1417
# It isn't clear from the response whether some of the rooms are
# not accessible.
return requested_room, children, ()
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Will this produce odd results on the client-side where one may believe they can access a room, but will find they are unable to?

Mostly a question out of curiosity, as I don't know any way that the situation could be improved (and this is a legacy API so meh).

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It shouldn't, this is before any filtering is done on whether a room is accessible or not, it pretty much is just about changing API shapes from the old /spaces endpoint to the new /hierarchy. Part of that is that the /spaces endpoint returned multiple layers deep (over federation) while the /hierarchy one does not. So we throw away a bunch of data.

The overall algorithm is:

  1. Find the requested room (which is returned in rooms for /spaces, but as a separate field for /hierarchy)
  2. Attach the children events to it (which is returned in a list including children for other rooms in /spaces and as part of the room object for /hierarchy).
  3. Get the summaries for any of those children room (which are returned as rooms for /spaces, but those will include additional layers).

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Aha, I see. Thanks for explaining it so clearly.

synapse/federation/federation_client.py
# The algorithm below is a bit inefficient as it only attempts to
# get information for the requested room, but the legacy API may
# return additional layers.
if e.code == 502:
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Does Synapse not return a 400, M_UNRECOGNIZED for endpoints it fails to understand, rather than a 502?

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This is from

synapse/synapse/federation/federation_client.py

Line 600 in 4b1722a

raise SynapseError(502, "Failed to %s via any server" % (description,))

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aha, thanks!

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The goal is only to run this if we were unable to fetch data from all destinations, not just if we were unable to fetch it from the first destination. (This is different than our fallback of v2 -> v1 for e.g. send_join, which we do on a per-destination basis).

anoadragon453
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My questions have been answered, and I have no more.

@clokep clokep changed the base branch from develop to release-v1.41 August 17, 2021 12:18
@clokep clokep merged commit c4cf0c0 into release-v1.41 Aug 17, 2021
@clokep clokep deleted the clokep/spaces-pagination-legacy branch August 17, 2021 12:19
richvdh added a commit that referenced this pull request Aug 24, 2021
@richvdh
Merge tag 'v1.41.0rc1' into rav/sw1v-hotfixes
abe6a29 
Synapse 1.41.0rc1 (2021-08-18)
==============================

Features
--------

- Add `get_userinfo_by_id` method to ModuleApi. ([\#9581](#9581))
- Initial local support for [MSC3266](#10394), Room Summary over the unstable `/rooms/{roomIdOrAlias}/summary` API. ([\#10394](#10394))
- Experimental support for [MSC3288](matrix-org/matrix-spec-proposals#3288), sending `room_type` to the identity server for 3pid invites over the `/store-invite` API. ([\#10435](#10435))
- Add support for sending federation requests through a proxy. Contributed by @Bubu and @dklimpel. ([\#10475](#10475))
- Add support for "marker" events which makes historical events discoverable for servers that already have all of the scrollback history (part of [MSC2716](matrix-org/matrix-spec-proposals#2716)). ([\#10498](#10498))
- Add a configuration setting for the time a `/sync` response is cached for. ([\#10513](#10513))
- The default logging handler for new installations is now `PeriodicallyFlushingMemoryHandler`, a buffered logging handler which periodically flushes itself. ([\#10518](#10518))
- Add support for new redaction rules for historical events specified in [MSC2716](matrix-org/matrix-spec-proposals#2716). ([\#10538](#10538))
- Add a setting to disable TLS when sending email. ([\#10546](#10546))
- Add pagination to the spaces summary based on updates to [MSC2946](matrix-org/matrix-spec-proposals#2946). ([\#10549](#10549), [\#10560](#10560), [\#10569](#10569), [\#10574](#10574), [\#10575](#10575), [\#10579](#10579), [\#10583](#10583))
- Admin API to delete several media for a specific user. Contributed by @dklimpel. ([\#10558](#10558), [\#10628](#10628))
- Add support for routing `/createRoom` to workers. ([\#10564](#10564))
- Update the Synapse Grafana dashboard. ([\#10570](#10570))
- Add an admin API (`GET /_synapse/admin/username_available`) to check if a username is available (regardless of registration settings). ([\#10578](#10578))
- Allow editing a user's `external_ids` via the "Edit User" admin API. Contributed by @dklimpel. ([\#10598](#10598))
- The Synapse manhole no longer needs coroutines to be wrapped in `defer.ensureDeferred`. ([\#10602](#10602))
- Add option to allow modules to run periodic tasks on all instances, rather than just the one configured to run background tasks. ([\#10638](#10638))

Bugfixes
--------

- Add some clarification to the sample config file. Contributed by @Kentokamoto. ([\#10129](#10129))
- Fix a long-standing bug where protocols which are not implemented by any appservices were incorrectly returned via `GET /_matrix/client/r0/thirdparty/protocols`. ([\#10532](#10532))
- Fix exceptions in logs when failing to get remote room list. ([\#10541](#10541))
- Fix longstanding bug which caused the user "status" to be reset when the user went offline. Contributed by @dklimpel. ([\#10550](#10550))
- Allow public rooms to be previewed in the spaces summary APIs from [MSC2946](matrix-org/matrix-spec-proposals#2946). ([\#10580](#10580))
- Fix a bug introduced in v1.37.1 where an error could occur in the asynchronous processing of PDUs when the queue was empty. ([\#10592](#10592))
- Fix errors on /sync when read receipt data is a string. Only affects homeservers with the experimental flag for [MSC2285](matrix-org/matrix-spec-proposals#2285) enabled. Contributed by @SimonBrandner. ([\#10606](#10606))
- Additional validation for the spaces summary API to avoid errors like `ValueError: Stop argument for islice() must be None or an integer`. The missing validation has existed since v1.31.0. ([\#10611](#10611))
- Revert behaviour introduced in v1.38.0 that strips `org.matrix.msc2732.device_unused_fallback_key_types` from `/sync` when its value is empty. This field should instead always be present according to [MSC2732](https://github.com/matrix-org/matrix-doc/blob/master/proposals/2732-olm-fallback-keys.md). ([\#10623](#10623))

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

- Add documentation for configuration a forward proxy. ([\#10443](#10443))
- Updated the reverse proxy documentation to highlight the homserver configuration that is needed to make Synapse aware that is is intentionally reverse proxied. ([\#10551](#10551))
- Update CONTRIBUTING.md to fix index links and the instructions for SyTest in docker. ([\#10599](#10599))

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

- No longer build `.deb` packages for Ubuntu 20.10 LTS Groovy Gorilla, which has now EOLed. ([\#10588](#10588))
- The `template_dir` configuration settings in the `sso`, `account_validity` and `email` sections of the configuration file are now deprecated in favour of the global `templates.custom_template_directory` setting. See the [upgrade notes](https://matrix-org.github.io/synapse/latest/upgrade.html) for more information. ([\#10596](#10596))

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

- Improve event caching mechanism to avoid having multiple copies of an event in memory at a time. ([\#10119](#10119))
- Reduce errors in PostgreSQL logs due to concurrent serialization errors. ([\#10504](#10504))
- Include room ID in ignored EDU log messages. Contributed by @ilmari. ([\#10507](#10507))
- Add pagination to the spaces summary based on updates to [MSC2946](matrix-org/matrix-spec-proposals#2946). ([\#10527](#10527), [\#10530](#10530))
- Fix CI to not break when run against branches rather than pull requests. ([\#10529](#10529))
- Mark all events stemming from the [MSC2716](matrix-org/matrix-spec-proposals#2716) `/batch_send` endpoint as historical. ([\#10537](#10537))
- Clean up some of the federation event authentication code for clarity. ([\#10539](#10539), [\#10591](#10591))
- Convert `Transaction` and `Edu` objects to attrs. ([\#10542](#10542))
- Update `/batch_send` endpoint to only return `state_events` created by the `state_events_from_before` passed in. ([\#10552](#10552))
- Update contributing.md to warn against rebasing an open PR. ([\#10563](#10563))
- Remove the unused public rooms replication stream. ([\#10565](#10565))
- Clarify error message when failing to join a restricted room. ([\#10572](#10572))
- Remove references to BuildKite in favour of GitHub Actions. ([\#10573](#10573))
- Move `/batch_send` endpoint defined by [MSC2716](matrix-org/matrix-spec-proposals#2716) to the `/v2_alpha` directory. ([\#10576](#10576))
- Allow multiple custom directories in `read_templates`. ([\#10587](#10587))
- Re-organize the `synapse.federation.transport.server` module to create smaller files. ([\#10590](#10590))
- Flatten the `synapse.rest.client` package by moving the contents of `v1` and `v2_alpha` into the parent. ([\#10600](#10600))
- Build Debian packages for Debian 12 (Bookworm). ([\#10612](#10612))
- Fix up a couple of links to the database schema documentation. ([\#10620](#10620))
- Fix a broken link to the upgrade notes. ([\#10631](#10631))
aaronraimist added a commit to aaronraimist/synapse that referenced this pull request Aug 31, 2021
@aaronraimist
Merge tag 'v1.41.0' into 2021-05
e1fe53a 
Synapse 1.41.0 (2021-08-24)
===========================

This release adds support for Debian 12 (Bookworm), but **removes support for Ubuntu 20.10 (Groovy Gorilla)**, which reached End of Life last month.

Note that when using workers the `/_synapse/admin/v1/users/{userId}/media` must now be handled by media workers. See the [upgrade notes](https://matrix-org.github.io/synapse/latest/upgrade.html) for more information.

Features
--------

- Enable room capabilities ([MSC3244](matrix-org/matrix-spec-proposals#3244)) by default and set room version 8 as the preferred room version when creating restricted rooms. ([\matrix-org#10571](matrix-org#10571))

Synapse 1.41.0rc1 (2021-08-18)
==============================

Features
--------

- Add `get_userinfo_by_id` method to ModuleApi. ([\matrix-org#9581](matrix-org#9581))
- Initial local support for [MSC3266](matrix-org#10394), Room Summary over the unstable `/rooms/{roomIdOrAlias}/summary` API. ([\matrix-org#10394](matrix-org#10394))
- Experimental support for [MSC3288](matrix-org/matrix-spec-proposals#3288), sending `room_type` to the identity server for 3pid invites over the `/store-invite` API. ([\matrix-org#10435](matrix-org#10435))
- Add support for sending federation requests through a proxy. Contributed by @Bubu and @dklimpel. See the [upgrade notes](https://matrix-org.github.io/synapse/latest/upgrade.html) for more information. ([\matrix-org#10596](matrix-org#10596)). ([\matrix-org#10475](matrix-org#10475))
- Add support for "marker" events which makes historical events discoverable for servers that already have all of the scrollback history (part of [MSC2716](matrix-org/matrix-spec-proposals#2716)). ([\matrix-org#10498](matrix-org#10498))
- Add a configuration setting for the time a `/sync` response is cached for. ([\matrix-org#10513](matrix-org#10513))
- The default logging handler for new installations is now `PeriodicallyFlushingMemoryHandler`, a buffered logging handler which periodically flushes itself. ([\matrix-org#10518](matrix-org#10518))
- Add support for new redaction rules for historical events specified in [MSC2716](matrix-org/matrix-spec-proposals#2716). ([\matrix-org#10538](matrix-org#10538))
- Add a setting to disable TLS when sending email. ([\matrix-org#10546](matrix-org#10546))
- Add pagination to the spaces summary based on updates to [MSC2946](matrix-org/matrix-spec-proposals#2946). ([\matrix-org#10549](matrix-org#10549), [\matrix-org#10560](matrix-org#10560), [\matrix-org#10569](matrix-org#10569), [\matrix-org#10574](matrix-org#10574), [\matrix-org#10575](matrix-org#10575), [\matrix-org#10579](matrix-org#10579), [\matrix-org#10583](matrix-org#10583))
- Admin API to delete several media for a specific user. Contributed by @dklimpel. ([\matrix-org#10558](matrix-org#10558), [\matrix-org#10628](matrix-org#10628))
- Add support for routing `/createRoom` to workers. ([\matrix-org#10564](matrix-org#10564))
- Update the Synapse Grafana dashboard. ([\matrix-org#10570](matrix-org#10570))
- Add an admin API (`GET /_synapse/admin/username_available`) to check if a username is available (regardless of registration settings). ([\matrix-org#10578](matrix-org#10578))
- Allow editing a user's `external_ids` via the "Edit User" admin API. Contributed by @dklimpel. ([\matrix-org#10598](matrix-org#10598))
- The Synapse manhole no longer needs coroutines to be wrapped in `defer.ensureDeferred`. ([\matrix-org#10602](matrix-org#10602))
- Add option to allow modules to run periodic tasks on all instances, rather than just the one configured to run background tasks. ([\matrix-org#10638](matrix-org#10638))

Bugfixes
--------

- Add some clarification to the sample config file. Contributed by @Kentokamoto. ([\matrix-org#10129](matrix-org#10129))
- Fix a long-standing bug where protocols which are not implemented by any appservices were incorrectly returned via `GET /_matrix/client/r0/thirdparty/protocols`. ([\matrix-org#10532](matrix-org#10532))
- Fix exceptions in logs when failing to get remote room list. ([\matrix-org#10541](matrix-org#10541))
- Fix longstanding bug which caused the user's presence "status message" to be reset when the user went offline. Contributed by @dklimpel. ([\matrix-org#10550](matrix-org#10550))
- Allow public rooms to be previewed in the spaces summary APIs from [MSC2946](matrix-org/matrix-spec-proposals#2946). ([\matrix-org#10580](matrix-org#10580))
- Fix a bug introduced in v1.37.1 where an error could occur in the asynchronous processing of PDUs when the queue was empty. ([\matrix-org#10592](matrix-org#10592))
- Fix errors on /sync when read receipt data is a string. Only affects homeservers with the experimental flag for [MSC2285](matrix-org/matrix-spec-proposals#2285) enabled. Contributed by @SimonBrandner. ([\matrix-org#10606](matrix-org#10606))
- Additional validation for the spaces summary API to avoid errors like `ValueError: Stop argument for islice() must be None or an integer`. The missing validation has existed since v1.31.0. ([\matrix-org#10611](matrix-org#10611))
- Revert behaviour introduced in v1.38.0 that strips `org.matrix.msc2732.device_unused_fallback_key_types` from `/sync` when its value is empty. This field should instead always be present according to [MSC2732](https://github.com/matrix-org/matrix-doc/blob/master/proposals/2732-olm-fallback-keys.md). ([\matrix-org#10623](matrix-org#10623))

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

- Add documentation for configuring a forward proxy. ([\matrix-org#10443](matrix-org#10443))
- Updated the reverse proxy documentation to highlight the homserver configuration that is needed to make Synapse aware that is is intentionally reverse proxied. ([\matrix-org#10551](matrix-org#10551))
- Update CONTRIBUTING.md to fix index links and the instructions for SyTest in docker. ([\matrix-org#10599](matrix-org#10599))

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

- No longer build `.deb` packages for Ubuntu 20.10 Groovy Gorilla, which has now EOLed. ([\matrix-org#10588](matrix-org#10588))
- The `template_dir` configuration settings in the `sso`, `account_validity` and `email` sections of the configuration file are now deprecated in favour of the global `templates.custom_template_directory` setting. See the [upgrade notes](https://matrix-org.github.io/synapse/latest/upgrade.html) for more information. ([\matrix-org#10596](matrix-org#10596))

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

- Improve event caching mechanism to avoid having multiple copies of an event in memory at a time. ([\matrix-org#10119](matrix-org#10119))
- Reduce errors in PostgreSQL logs due to concurrent serialization errors. ([\matrix-org#10504](matrix-org#10504))
- Include room ID in ignored EDU log messages. Contributed by @ilmari. ([\matrix-org#10507](matrix-org#10507))
- Add pagination to the spaces summary based on updates to [MSC2946](matrix-org/matrix-spec-proposals#2946). ([\matrix-org#10527](matrix-org#10527), [\matrix-org#10530](matrix-org#10530))
- Fix CI to not break when run against branches rather than pull requests. ([\matrix-org#10529](matrix-org#10529))
- Mark all events stemming from the [MSC2716](matrix-org/matrix-spec-proposals#2716) `/batch_send` endpoint as historical. ([\matrix-org#10537](matrix-org#10537))
- Clean up some of the federation event authentication code for clarity. ([\matrix-org#10539](matrix-org#10539), [\matrix-org#10591](matrix-org#10591))
- Convert `Transaction` and `Edu` objects to attrs. ([\matrix-org#10542](matrix-org#10542))
- Update `/batch_send` endpoint to only return `state_events` created by the `state_events_from_before` passed in. ([\matrix-org#10552](matrix-org#10552))
- Update contributing.md to warn against rebasing an open PR. ([\matrix-org#10563](matrix-org#10563))
- Remove the unused public rooms replication stream. ([\matrix-org#10565](matrix-org#10565))
- Clarify error message when failing to join a restricted room. ([\matrix-org#10572](matrix-org#10572))
- Remove references to BuildKite in favour of GitHub Actions. ([\matrix-org#10573](matrix-org#10573))
- Move `/batch_send` endpoint defined by [MSC2716](matrix-org/matrix-spec-proposals#2716) to the `/v2_alpha` directory. ([\matrix-org#10576](matrix-org#10576))
- Allow multiple custom directories in `read_templates`. ([\matrix-org#10587](matrix-org#10587))
- Re-organize the `synapse.federation.transport.server` module to create smaller files. ([\matrix-org#10590](matrix-org#10590))
- Flatten the `synapse.rest.client` package by moving the contents of `v1` and `v2_alpha` into the parent. ([\matrix-org#10600](matrix-org#10600))
- Build Debian packages for Debian 12 (Bookworm). ([\matrix-org#10612](matrix-org#10612))
- Fix up a couple of links to the database schema documentation. ([\matrix-org#10620](matrix-org#10620))
- Fix a broken link to the upgrade notes. ([\matrix-org#10631](matrix-org#10631))
babolivier added a commit to matrix-org/synapse-dinsic that referenced this pull request Sep 1, 2021
@babolivier
Merge tag 'v1.41.0' into babolivier/dinsic_1.41.0
ea37bf9 
Synapse 1.41.0 (2021-08-24)
===========================

This release adds support for Debian 12 (Bookworm), but **removes support for Ubuntu 20.10 (Groovy Gorilla)**, which reached End of Life last month.

Note that when using workers the `/_synapse/admin/v1/users/{userId}/media` must now be handled by media workers. See the [upgrade notes](https://matrix-org.github.io/synapse/latest/upgrade.html) for more information.

Features
--------

- Enable room capabilities ([MSC3244](matrix-org/matrix-spec-proposals#3244)) by default and set room version 8 as the preferred room version when creating restricted rooms. ([\#10571](matrix-org/synapse#10571))

Synapse 1.41.0rc1 (2021-08-18)
==============================

Features
--------

- Add `get_userinfo_by_id` method to ModuleApi. ([\#9581](matrix-org/synapse#9581))
- Initial local support for [MSC3266](matrix-org/synapse#10394), Room Summary over the unstable `/rooms/{roomIdOrAlias}/summary` API. ([\#10394](matrix-org/synapse#10394))
- Experimental support for [MSC3288](matrix-org/matrix-spec-proposals#3288), sending `room_type` to the identity server for 3pid invites over the `/store-invite` API. ([\#10435](matrix-org/synapse#10435))
- Add support for sending federation requests through a proxy. Contributed by @Bubu and @dklimpel. See the [upgrade notes](https://matrix-org.github.io/synapse/latest/upgrade.html) for more information. ([\#10596](matrix-org/synapse#10596)). ([\#10475](matrix-org/synapse#10475))
- Add support for "marker" events which makes historical events discoverable for servers that already have all of the scrollback history (part of [MSC2716](matrix-org/matrix-spec-proposals#2716)). ([\#10498](matrix-org/synapse#10498))
- Add a configuration setting for the time a `/sync` response is cached for. ([\#10513](matrix-org/synapse#10513))
- The default logging handler for new installations is now `PeriodicallyFlushingMemoryHandler`, a buffered logging handler which periodically flushes itself. ([\#10518](matrix-org/synapse#10518))
- Add support for new redaction rules for historical events specified in [MSC2716](matrix-org/matrix-spec-proposals#2716). ([\#10538](matrix-org/synapse#10538))
- Add a setting to disable TLS when sending email. ([\#10546](matrix-org/synapse#10546))
- Add pagination to the spaces summary based on updates to [MSC2946](matrix-org/matrix-spec-proposals#2946). ([\#10549](matrix-org/synapse#10549), [\#10560](matrix-org/synapse#10560), [\#10569](matrix-org/synapse#10569), [\#10574](matrix-org/synapse#10574), [\#10575](matrix-org/synapse#10575), [\#10579](matrix-org/synapse#10579), [\#10583](matrix-org/synapse#10583))
- Admin API to delete several media for a specific user. Contributed by @dklimpel. ([\#10558](matrix-org/synapse#10558), [\#10628](matrix-org/synapse#10628))
- Add support for routing `/createRoom` to workers. ([\#10564](matrix-org/synapse#10564))
- Update the Synapse Grafana dashboard. ([\#10570](matrix-org/synapse#10570))
- Add an admin API (`GET /_synapse/admin/username_available`) to check if a username is available (regardless of registration settings). ([\#10578](matrix-org/synapse#10578))
- Allow editing a user's `external_ids` via the "Edit User" admin API. Contributed by @dklimpel. ([\#10598](matrix-org/synapse#10598))
- The Synapse manhole no longer needs coroutines to be wrapped in `defer.ensureDeferred`. ([\#10602](matrix-org/synapse#10602))
- Add option to allow modules to run periodic tasks on all instances, rather than just the one configured to run background tasks. ([\#10638](matrix-org/synapse#10638))

Bugfixes
--------

- Add some clarification to the sample config file. Contributed by @Kentokamoto. ([\#10129](matrix-org/synapse#10129))
- Fix a long-standing bug where protocols which are not implemented by any appservices were incorrectly returned via `GET /_matrix/client/r0/thirdparty/protocols`. ([\#10532](matrix-org/synapse#10532))
- Fix exceptions in logs when failing to get remote room list. ([\#10541](matrix-org/synapse#10541))
- Fix longstanding bug which caused the user's presence "status message" to be reset when the user went offline. Contributed by @dklimpel. ([\#10550](matrix-org/synapse#10550))
- Allow public rooms to be previewed in the spaces summary APIs from [MSC2946](matrix-org/matrix-spec-proposals#2946). ([\#10580](matrix-org/synapse#10580))
- Fix a bug introduced in v1.37.1 where an error could occur in the asynchronous processing of PDUs when the queue was empty. ([\#10592](matrix-org/synapse#10592))
- Fix errors on /sync when read receipt data is a string. Only affects homeservers with the experimental flag for [MSC2285](matrix-org/matrix-spec-proposals#2285) enabled. Contributed by @SimonBrandner. ([\#10606](matrix-org/synapse#10606))
- Additional validation for the spaces summary API to avoid errors like `ValueError: Stop argument for islice() must be None or an integer`. The missing validation has existed since v1.31.0. ([\#10611](matrix-org/synapse#10611))
- Revert behaviour introduced in v1.38.0 that strips `org.matrix.msc2732.device_unused_fallback_key_types` from `/sync` when its value is empty. This field should instead always be present according to [MSC2732](https://github.com/matrix-org/matrix-doc/blob/master/proposals/2732-olm-fallback-keys.md). ([\#10623](matrix-org/synapse#10623))

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

- Add documentation for configuring a forward proxy. ([\#10443](matrix-org/synapse#10443))
- Updated the reverse proxy documentation to highlight the homserver configuration that is needed to make Synapse aware that is is intentionally reverse proxied. ([\#10551](matrix-org/synapse#10551))
- Update CONTRIBUTING.md to fix index links and the instructions for SyTest in docker. ([\#10599](matrix-org/synapse#10599))

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

- No longer build `.deb` packages for Ubuntu 20.10 Groovy Gorilla, which has now EOLed. ([\#10588](matrix-org/synapse#10588))
- The `template_dir` configuration settings in the `sso`, `account_validity` and `email` sections of the configuration file are now deprecated in favour of the global `templates.custom_template_directory` setting. See the [upgrade notes](https://matrix-org.github.io/synapse/latest/upgrade.html) for more information. ([\#10596](matrix-org/synapse#10596))

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

- Improve event caching mechanism to avoid having multiple copies of an event in memory at a time. ([\#10119](matrix-org/synapse#10119))
- Reduce errors in PostgreSQL logs due to concurrent serialization errors. ([\#10504](matrix-org/synapse#10504))
- Include room ID in ignored EDU log messages. Contributed by @ilmari. ([\#10507](matrix-org/synapse#10507))
- Add pagination to the spaces summary based on updates to [MSC2946](matrix-org/matrix-spec-proposals#2946). ([\#10527](matrix-org/synapse#10527), [\#10530](matrix-org/synapse#10530))
- Fix CI to not break when run against branches rather than pull requests. ([\#10529](matrix-org/synapse#10529))
- Mark all events stemming from the [MSC2716](matrix-org/matrix-spec-proposals#2716) `/batch_send` endpoint as historical. ([\#10537](matrix-org/synapse#10537))
- Clean up some of the federation event authentication code for clarity. ([\#10539](matrix-org/synapse#10539), [\#10591](matrix-org/synapse#10591))
- Convert `Transaction` and `Edu` objects to attrs. ([\#10542](matrix-org/synapse#10542))
- Update `/batch_send` endpoint to only return `state_events` created by the `state_events_from_before` passed in. ([\#10552](matrix-org/synapse#10552))
- Update contributing.md to warn against rebasing an open PR. ([\#10563](matrix-org/synapse#10563))
- Remove the unused public rooms replication stream. ([\#10565](matrix-org/synapse#10565))
- Clarify error message when failing to join a restricted room. ([\#10572](matrix-org/synapse#10572))
- Remove references to BuildKite in favour of GitHub Actions. ([\#10573](matrix-org/synapse#10573))
- Move `/batch_send` endpoint defined by [MSC2716](matrix-org/matrix-spec-proposals#2716) to the `/v2_alpha` directory. ([\#10576](matrix-org/synapse#10576))
- Allow multiple custom directories in `read_templates`. ([\#10587](matrix-org/synapse#10587))
- Re-organize the `synapse.federation.transport.server` module to create smaller files. ([\#10590](matrix-org/synapse#10590))
- Flatten the `synapse.rest.client` package by moving the contents of `v1` and `v2_alpha` into the parent. ([\#10600](matrix-org/synapse#10600))
- Build Debian packages for Debian 12 (Bookworm). ([\#10612](matrix-org/synapse#10612))
- Fix up a couple of links to the database schema documentation. ([\#10620](matrix-org/synapse#10620))
- Fix a broken link to the upgrade notes. ([\#10631](matrix-org/synapse#10631))
Fizzadar pushed a commit to Fizzadar/synapse that referenced this pull request Oct 26, 2021
@tulir
Merge tag 'v1.41.0'
3d29f91 
Synapse 1.41.0 (2021-08-24)
===========================

This release adds support for Debian 12 (Bookworm), but **removes support for Ubuntu 20.10 (Groovy Gorilla)**, which reached End of Life last month.

Note that when using workers the `/_synapse/admin/v1/users/{userId}/media` must now be handled by media workers. See the [upgrade notes](https://matrix-org.github.io/synapse/latest/upgrade.html) for more information.

Features
--------

- Enable room capabilities ([MSC3244](matrix-org/matrix-spec-proposals#3244)) by default and set room version 8 as the preferred room version when creating restricted rooms. ([\matrix-org#10571](matrix-org#10571))

Synapse 1.41.0rc1 (2021-08-18)
==============================

Features
--------

- Add `get_userinfo_by_id` method to ModuleApi. ([\matrix-org#9581](matrix-org#9581))
- Initial local support for [MSC3266](matrix-org#10394), Room Summary over the unstable `/rooms/{roomIdOrAlias}/summary` API. ([\matrix-org#10394](matrix-org#10394))
- Experimental support for [MSC3288](matrix-org/matrix-spec-proposals#3288), sending `room_type` to the identity server for 3pid invites over the `/store-invite` API. ([\matrix-org#10435](matrix-org#10435))
- Add support for sending federation requests through a proxy. Contributed by @Bubu and @dklimpel. See the [upgrade notes](https://matrix-org.github.io/synapse/latest/upgrade.html) for more information. ([\matrix-org#10596](matrix-org#10596)). ([\matrix-org#10475](matrix-org#10475))
- Add support for "marker" events which makes historical events discoverable for servers that already have all of the scrollback history (part of [MSC2716](matrix-org/matrix-spec-proposals#2716)). ([\matrix-org#10498](matrix-org#10498))
- Add a configuration setting for the time a `/sync` response is cached for. ([\matrix-org#10513](matrix-org#10513))
- The default logging handler for new installations is now `PeriodicallyFlushingMemoryHandler`, a buffered logging handler which periodically flushes itself. ([\matrix-org#10518](matrix-org#10518))
- Add support for new redaction rules for historical events specified in [MSC2716](matrix-org/matrix-spec-proposals#2716). ([\matrix-org#10538](matrix-org#10538))
- Add a setting to disable TLS when sending email. ([\matrix-org#10546](matrix-org#10546))
- Add pagination to the spaces summary based on updates to [MSC2946](matrix-org/matrix-spec-proposals#2946). ([\matrix-org#10549](matrix-org#10549), [\matrix-org#10560](matrix-org#10560), [\matrix-org#10569](matrix-org#10569), [\matrix-org#10574](matrix-org#10574), [\matrix-org#10575](matrix-org#10575), [\matrix-org#10579](matrix-org#10579), [\matrix-org#10583](matrix-org#10583))
- Admin API to delete several media for a specific user. Contributed by @dklimpel. ([\matrix-org#10558](matrix-org#10558), [\matrix-org#10628](matrix-org#10628))
- Add support for routing `/createRoom` to workers. ([\matrix-org#10564](matrix-org#10564))
- Update the Synapse Grafana dashboard. ([\matrix-org#10570](matrix-org#10570))
- Add an admin API (`GET /_synapse/admin/username_available`) to check if a username is available (regardless of registration settings). ([\matrix-org#10578](matrix-org#10578))
- Allow editing a user's `external_ids` via the "Edit User" admin API. Contributed by @dklimpel. ([\matrix-org#10598](matrix-org#10598))
- The Synapse manhole no longer needs coroutines to be wrapped in `defer.ensureDeferred`. ([\matrix-org#10602](matrix-org#10602))
- Add option to allow modules to run periodic tasks on all instances, rather than just the one configured to run background tasks. ([\matrix-org#10638](matrix-org#10638))

Bugfixes
--------

- Add some clarification to the sample config file. Contributed by @Kentokamoto. ([\matrix-org#10129](matrix-org#10129))
- Fix a long-standing bug where protocols which are not implemented by any appservices were incorrectly returned via `GET /_matrix/client/r0/thirdparty/protocols`. ([\matrix-org#10532](matrix-org#10532))
- Fix exceptions in logs when failing to get remote room list. ([\matrix-org#10541](matrix-org#10541))
- Fix longstanding bug which caused the user's presence "status message" to be reset when the user went offline. Contributed by @dklimpel. ([\matrix-org#10550](matrix-org#10550))
- Allow public rooms to be previewed in the spaces summary APIs from [MSC2946](matrix-org/matrix-spec-proposals#2946). ([\matrix-org#10580](matrix-org#10580))
- Fix a bug introduced in v1.37.1 where an error could occur in the asynchronous processing of PDUs when the queue was empty. ([\matrix-org#10592](matrix-org#10592))
- Fix errors on /sync when read receipt data is a string. Only affects homeservers with the experimental flag for [MSC2285](matrix-org/matrix-spec-proposals#2285) enabled. Contributed by @SimonBrandner. ([\matrix-org#10606](matrix-org#10606))
- Additional validation for the spaces summary API to avoid errors like `ValueError: Stop argument for islice() must be None or an integer`. The missing validation has existed since v1.31.0. ([\matrix-org#10611](matrix-org#10611))
- Revert behaviour introduced in v1.38.0 that strips `org.matrix.msc2732.device_unused_fallback_key_types` from `/sync` when its value is empty. This field should instead always be present according to [MSC2732](https://github.com/matrix-org/matrix-doc/blob/master/proposals/2732-olm-fallback-keys.md). ([\matrix-org#10623](matrix-org#10623))

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

- Add documentation for configuring a forward proxy. ([\matrix-org#10443](matrix-org#10443))
- Updated the reverse proxy documentation to highlight the homserver configuration that is needed to make Synapse aware that is is intentionally reverse proxied. ([\matrix-org#10551](matrix-org#10551))
- Update CONTRIBUTING.md to fix index links and the instructions for SyTest in docker. ([\matrix-org#10599](matrix-org#10599))

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

- No longer build `.deb` packages for Ubuntu 20.10 Groovy Gorilla, which has now EOLed. ([\matrix-org#10588](matrix-org#10588))
- The `template_dir` configuration settings in the `sso`, `account_validity` and `email` sections of the configuration file are now deprecated in favour of the global `templates.custom_template_directory` setting. See the [upgrade notes](https://matrix-org.github.io/synapse/latest/upgrade.html) for more information. ([\matrix-org#10596](matrix-org#10596))

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

- Improve event caching mechanism to avoid having multiple copies of an event in memory at a time. ([\matrix-org#10119](matrix-org#10119))
- Reduce errors in PostgreSQL logs due to concurrent serialization errors. ([\matrix-org#10504](matrix-org#10504))
- Include room ID in ignored EDU log messages. Contributed by @ilmari. ([\matrix-org#10507](matrix-org#10507))
- Add pagination to the spaces summary based on updates to [MSC2946](matrix-org/matrix-spec-proposals#2946). ([\matrix-org#10527](matrix-org#10527), [\matrix-org#10530](matrix-org#10530))
- Fix CI to not break when run against branches rather than pull requests. ([\matrix-org#10529](matrix-org#10529))
- Mark all events stemming from the [MSC2716](matrix-org/matrix-spec-proposals#2716) `/batch_send` endpoint as historical. ([\matrix-org#10537](matrix-org#10537))
- Clean up some of the federation event authentication code for clarity. ([\matrix-org#10539](matrix-org#10539), [\matrix-org#10591](matrix-org#10591))
- Convert `Transaction` and `Edu` objects to attrs. ([\matrix-org#10542](matrix-org#10542))
- Update `/batch_send` endpoint to only return `state_events` created by the `state_events_from_before` passed in. ([\matrix-org#10552](matrix-org#10552))
- Update contributing.md to warn against rebasing an open PR. ([\matrix-org#10563](matrix-org#10563))
- Remove the unused public rooms replication stream. ([\matrix-org#10565](matrix-org#10565))
- Clarify error message when failing to join a restricted room. ([\matrix-org#10572](matrix-org#10572))
- Remove references to BuildKite in favour of GitHub Actions. ([\matrix-org#10573](matrix-org#10573))
- Move `/batch_send` endpoint defined by [MSC2716](matrix-org/matrix-spec-proposals#2716) to the `/v2_alpha` directory. ([\matrix-org#10576](matrix-org#10576))
- Allow multiple custom directories in `read_templates`. ([\matrix-org#10587](matrix-org#10587))
- Re-organize the `synapse.federation.transport.server` module to create smaller files. ([\matrix-org#10590](matrix-org#10590))
- Flatten the `synapse.rest.client` package by moving the contents of `v1` and `v2_alpha` into the parent. ([\matrix-org#10600](matrix-org#10600))
- Build Debian packages for Debian 12 (Bookworm). ([\matrix-org#10612](matrix-org#10612))
- Fix up a couple of links to the database schema documentation. ([\matrix-org#10620](matrix-org#10620))
- Fix a broken link to the upgrade notes. ([\matrix-org#10631](matrix-org#10631))
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