Commit graph

38 commits

Author SHA1 Message Date
kegsay
b189edf4f4
Remove gmsl.HeaderedEvent (#3068)
Replaced with types.HeaderedEvent _for now_. In reality we want to move
them all to gmsl.Event and only use HeaderedEvent when we _need_ to
bundle the version/event ID with the event (seriailsation boundaries,
and even then only when we don't have the room version).

Requires https://github.com/matrix-org/gomatrixserverlib/pull/373
2023-04-27 12:54:20 +01:00
Till
2475cf4b61
Add some roomserver UTs (#3067)
Adds tests for `QueryRestrictedJoinAllowed`, `IsServerAllowed` and
`PerformRoomUpgrade`. Refactors the `QueryRoomVersionForRoom` method to
accept a string and return a `gmsl.RoomVersion` instead of req/resp
structs.
Adds some more caching for `GetStateEvent`

This should also fix #2912 by ignoring state events belonging to other
users.
2023-04-27 08:07:13 +02:00
kegsay
1647213fac
Implement new RoomVersionImpl API (#3062)
As outlined in https://github.com/matrix-org/gomatrixserverlib/pull/368

The main change Dendrite side is that `RoomVersion` no longer has any
methods on it. Instead, you need to bounce via `gmsl.GetRoomVersion`.

It's very interesting to see where exactly Dendrite cares about this.
For some places it's creating events (fine) but others are way more
specific. Those areas will need to migrate to GMSL at some point.
2023-04-21 17:06:29 +01:00
kegsay
71eeccf34a
refactor: funnel event creation through room versions (#3060)
In preparation of interfacing up the room version value.
2023-04-20 19:07:31 +01:00
kegsay
72285b2659
refactor: update GMSL (#3058)
Sister PR to https://github.com/matrix-org/gomatrixserverlib/pull/364

Read this commit by commit to avoid going insane.
2023-04-19 15:50:33 +01:00
Neil Alexander
6650712a1c
Federation fixes for virtual hosting 2022-11-15 15:05:23 +00:00
Neil Alexander
f022fc1397
Remove origin field from PDUs (#2737)
This nukes the `origin` field from PDUs as per
matrix-org/matrix-spec#998, matrix-org/gomatrixserverlib#341.
2022-09-26 17:35:35 +01:00
Neil Alexander
c45d0936b5
Generic-based internal HTTP API (#2626)
* Generic-based internal HTTP API (tested out on a few endpoints in the federation API)

* Add `PerformInvite`

* More tweaks

* Fix metric name

* Fix LookupStateIDs

* Lots of changes to clients

* Some serverside stuff

* Some error handling

* Use paths as metric names

* Revert "Use paths as metric names"

This reverts commit a9323a6a343f5ce6461a2e5bd570fe06465f1b15.

* Namespace metric names

* Remove duplicate entry

* Remove another duplicate entry

* Tweak error handling

* Some more tweaks

* Update error behaviour

* Some more error tweaking

* Fix API path for `PerformDeleteKeys`

* Fix another path

* Tweak federation client proxying

* Fix another path

* Don't return typed nils

* Some more tweaks, not that it makes any difference

* Tweak federation client proxying

* Maybe fix the key backup test
2022-08-11 15:29:33 +01:00
Neil Alexander
3ea21273bc
Ristretto cache (#2563)
* Try Ristretto cache

* Tweak

* It's beautiful

* Update GMSL

* More strict keyable interface

* Fix that some more

* Make less panicky

* Don't enforce mutability checks for now

* Determine mutability using deep equality

* Tweaks

* Namespace keys

* Make federation caches mutable

* Update cost estimation, add metric

* Update GMSL

* Estimate cost for metrics better

* Reduce counters a bit

* Try caching events

* Some guards

* Try again

* Try this

* Use separate caches for hopefully better hash distribution

* Fix bug with admitting events into cache

* Try to fix bugs

* Check nil

* Try that again

* Preserve order jeezo this is messy

* thanks VS Code for doing exactly the wrong thing

* Try this again

* Be more specific

* aaaaargh

* One more time

* That might be better

* Stronger sorting

* Cache expiries, async publishing of EDUs

* Put it back

* Use a shared cache again

* Cost estimation fixes

* Update ristretto

* Reduce counters a bit

* Clean up a bit

* Update GMSL

* 1GB

* Configurable cache sizees

* Tweaks

* Add `config.DataUnit` for specifying friendly cache sizes

* Various tweaks

* Update GMSL

* Add back some lazy loading caching

* Include key in cost

* Include key in cost

* Tweak max age handling, config key name

* Only register prometheus metrics if requested

* Review comments @S7evinK

* Don't return errors when creating caches (it is better just to crash since otherwise we'll `nil`-pointer exception everywhere)

* Review comments

* Update sample configs

* Update GHA Workflow

* Update Complement images to Go 1.18

* Remove the cache test from the federation API as we no longer guarantee immediate cache admission

* Don't check the caches in the renewal test

* Possibly fix the upgrade tests

* Update to matrix-org/gomatrixserverlib#322

* Update documentation to refer to Go 1.18
2022-07-11 14:31:31 +01:00
kegsay
9957752a9d
Define component interfaces based on consumers (2/2) (#2425)
* convert remaining interfaces

* Tidy up the userapi interfaces
2022-05-05 19:30:38 +01:00
Neil Alexander
a763cbb0e1
Roomserver/federation input refactor (#2104)
* Put federation client functions into their own file

* Look for missing auth events in RS input

* Remove retrieveMissingAuthEvents from federation API

* Logging

* Sorta transplanted the code over

* Use event origin failing all else

* Don't get stuck on mutexes:

* Add verifier

* Don't mark state events with zero snapshot NID as not existing

* Check missing state if not an outlier before storing the event

* Reject instead of soft-fail, don't copy roominfo so much

* Use synchronous contexts, limit time to fetch missing events

* Clean up some commented out bits

* Simplify `/send` endpoint significantly

* Submit async

* Report errors on sending to RS input

* Set max payload in NATS to 16MB

* Tweak metrics

* Add `workerForRoom` for tidiness

* Try skipping unmarshalling errors for RespMissingEvents

* Track missing prev events separately to avoid calculating state when not possible

* Tweak logic around checking missing state

* Care about state when checking missing prev events

* Don't check missing state for create events

* Try that again

* Handle create events better

* Send create room events as new

* Use given event kind when sending auth/state events

* Revert "Use given event kind when sending auth/state events"

This reverts commit 089d64d271.

* Only search for missing prev events or state for new events

* Tweaks

* We only have missing prev if we don't supply state

* Room version tweaks

* Allow async inputs again

* Apply backpressure to consumers/synchronous requests to hopefully stop things being overwhelmed

* Set timeouts on roomserver input tasks (need to decide what timeout makes sense)

* Use work queue policy, deliver all on restart

* Reduce chance of duplicates being sent by NATS

* Limit the number of servers we attempt to reduce backpressure

* Some review comment fixes

* Tidy up a couple things

* Don't limit servers, randomise order using map

* Some context refactoring

* Update gmsl

* Don't resend create events

* Set stateIDs length correctly or else the roomserver thinks there are missing events when there aren't

* Exclude our own servername

* Try backing off servers

* Make excluding self behaviour optional

* Exclude self from g_m_e

* Update sytest-whitelist

* Update consumers for the roomserver output stream

* Remember to send outliers for state returned from /gme

* Make full HTTP tests less upsetti

* Remove 'If a device list update goes missing, the server resyncs on the next one' from the sytest blacklist

* Remove debugging test

* Fix blacklist again, remove unnecessary duplicate context

* Clearer contexts, don't use background in case there's something happening there

* Don't queue up events more than once in memory

* Correctly identify create events when checking for state

* Fill in gaps again in /gme code

* Remove `AuthEventIDs` from `InputRoomEvent`

* Remove stray field

Co-authored-by: Kegan Dougal <kegan@matrix.org>
2022-01-27 14:29:14 +00:00
S7evinK
161f145176
Add NATS JetStream support (#1866)
* Add NATS JetStream support
Update shopify/sarama

* Fix addresses

* Don't change Addresses in Defaults

* Update saramajetstream

* Add missing error check

Keep typing events for at least one minute

* Use all configured NATS addresses

* Update saramajetstream

* Try setting up with NATS

* Make sure NATS uses own persistent directory (TODO: make this configurable)

* Update go.mod/go.sum

* Jetstream package

* Various other refactoring

* Build fixes

* Config tweaks, make random jetstream storage path for CI

* Disable interest policies

* Try to sane default on jetstream base path

* Try to use in-memory for CI

* Restore storage/retention

* Update nats.go dependency

* Adapt changes to config

* Remove unneeded TopicFor

* Dep update

* Revert "Remove unneeded TopicFor"

This reverts commit f5a4e4a339.

* Revert changes made to streams

* Fix build problems

* Update nats-server

* Update go.mod/go.sum

* Roomserver input API queuing using NATS

* Fix topic naming

* Prometheus metrics

* More refactoring to remove saramajetstream

* Add missing topic

* Don't try to populate map that doesn't exist

* Roomserver output topic

* Update go.mod/go.sum

* Message acknowledgements

* Ack tweaks

* Try to resume transaction re-sends

* Try to resume transaction re-sends

* Update to matrix-org/gomatrixserverlib@91dadfb

* Remove internal.PartitionStorer from components that don't consume keychanges

* Try to reduce re-allocations a bit in resolveConflictsV2

* Tweak delivery options on RS input

* Publish send-to-device messages into correct JetStream subject

* Async and sync roomserver input

* Update dendrite-config.yaml

* Remove roomserver tests for now (they need rewriting)

* Remove roomserver test again (was merged back in)

* Update documentation

* Docker updates

* More Docker updates

* Update Docker readme again

* Fix lint issues

* Send final event in `processEvent` synchronously (since this might stop Sytest from being so upset)

* Don't report event rejection errors via `/send`, since apparently this is upsetting tests that don't expect that

* Go 1.16 instead of Go 1.13 for upgrade tests and Complement

* Revert "Don't report event rejection errors via `/send`, since apparently this is upsetting tests that don't expect that"

This reverts commit 368675283f.

* Don't report any errors on `/send` to see what fun that creates

* Fix panics on closed channel sends

* Enforce state key matches sender

* Do the same for leave

* Various tweaks to make tests happier

Squashed commit of the following:

commit 13f9028e7a
Author: Neil Alexander <neilalexander@users.noreply.github.com>
Date:   Tue Jan 4 15:47:14 2022 +0000

    Do the same for leave

commit e6be7f05c3
Author: Neil Alexander <neilalexander@users.noreply.github.com>
Date:   Tue Jan 4 15:33:42 2022 +0000

    Enforce state key matches sender

commit 85ede6d64b
Author: Neil Alexander <neilalexander@users.noreply.github.com>
Date:   Tue Jan 4 14:07:04 2022 +0000

    Fix panics on closed channel sends

commit 9755494a98
Author: Neil Alexander <neilalexander@users.noreply.github.com>
Date:   Tue Jan 4 13:38:22 2022 +0000

    Don't report any errors on `/send` to see what fun that creates

commit 3bb4f87b5d
Author: Neil Alexander <neilalexander@users.noreply.github.com>
Date:   Tue Jan 4 13:00:26 2022 +0000

    Revert "Don't report event rejection errors via `/send`, since apparently this is upsetting tests that don't expect that"

    This reverts commit 368675283f.

commit fe2673ed7b
Author: Neil Alexander <neilalexander@users.noreply.github.com>
Date:   Tue Jan 4 12:09:34 2022 +0000

    Go 1.16 instead of Go 1.13 for upgrade tests and Complement

commit 368675283f
Author: Neil Alexander <neilalexander@users.noreply.github.com>
Date:   Tue Jan 4 11:51:45 2022 +0000

    Don't report event rejection errors via `/send`, since apparently this is upsetting tests that don't expect that

commit b028dfc085
Author: Neil Alexander <neilalexander@users.noreply.github.com>
Date:   Tue Jan 4 10:29:08 2022 +0000

    Send final event in `processEvent` synchronously (since this might stop Sytest from being so upset)

* Merge in NATS Server v2.6.6 and nats.go v1.13 into the in-process connection fork

* Add `jetstream.WithJetStreamMessage` to make ack/nak-ing less messy, use process context in consumers

* Fix consumer component name in  federation API

* Add comment explaining where streams are defined

* Tweaks to roomserver input with comments

* Finish that sentence that I apparently forgot to finish in INSTALL.md

* Bump version number of config to 2

* Add comments around asynchronous sends to roomserver in processEventWithMissingState

* More useful error message when the config version does not match

* Set version in generate-config

* Fix version in config.Defaults

Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>
2022-01-05 17:44:49 +00:00
kegsay
af64e648d7
Fix failing Complement tests (#1931)
* Check for missing state keys to avoid panicking

* Check for not allowed errors on send_leave

* More logging

* handle send_join errors too

* Additional send_join checks

* s/join/gmsl.json/
2021-07-19 13:15:19 +01:00
Neil Alexander
d15836e260
Increase gocyclo complexity to 25 (and remove all but 2 golint directives related to it) (#1783) 2021-03-03 14:35:57 +00:00
Neil Alexander
b5aa7ca3ab
Top-level setup package (#1605)
* Move config, setup, mscs into "setup" top-level folder

* oops, forgot the EDU server

* Add setup

* goimports
2020-12-02 17:41:00 +00:00
Neil Alexander
20a01bceb2
Pass pointers to events — reloaded (#1583)
* Pass events as pointers

* Fix lint errors

* Update gomatrixserverlib

* Update gomatrixserverlib

* Update to matrix-org/gomatrixserverlib#240
2020-11-16 15:44:53 +00:00
Neil Alexander
6e63df1d9a
KindOld (#1531)
* Add KindOld

* Don't process latest events/memberships for old events

* Allow federationsender to ignore duplicate key entries when LatestEventIDs is duplicated by RS output events

* Signal to downstream components if an event has become a forward extremity

* Don't exclude from sync

* Soft-fail checks on KindNew

* Don't run the latest events updater at all for KindOld

* Don't make federation sender change after all

* Kind in federation sender join

* Don't send isForwardExtremity

* Fix syncapi

* Update comments

* Fix SendEventWithState

* Update sytest-whitelist

* Generate old output events

* Sync API consumes old room events

* Update comments
2020-10-19 14:59:13 +01:00
Neil Alexander
6fbf89a166
Return the correct error codes for v6 invite JSON violations (#1440)
* Return the correct error codes for v6 invite JSON violations

* Update sytest-whitelist
2020-09-24 17:16:59 +01:00
Neil Alexander
6150de6cb3
FIFO ordering of input events (#1386)
* Initial FIFOing of roomserver inputs

* Remove EventID response from api.InputRoomEventsResponse

* Don't send back event ID unnecessarily

* Fix ordering hopefully

* Reduce copies, use buffered task channel to reduce contention on other rooms

* Fix error handling
2020-09-03 15:22:16 +01:00
Kegsay
9d9e854fe0
Add Queryer and Inputer and factor out more RSAPI stuff (#1382)
* Add Queryer and use embedded structs

* Add Inputer and factor out more RS API stuff

This neatly splits up the RS API based on the functionality it provides,
whilst providing a useful place for code sharing via the `helpers` package.
2020-09-02 17:13:15 +01:00
oliverpool
3205b9212d
[readability] use event.StateKeyEquals where relevant and minor for-loop refactoring (#1339)
* use event.StateKeyEquals where relevant

Signed-off-by: Olivier Charvin <git@olivier.pfad.fr>

* use userID
2020-08-25 21:04:35 +01:00
Neil Alexander
6cb1a65809
Synchronous invites (#1273)
* Refactor invites to be synchronous

* Fix synchronous invites

* Fix client API return type for send invite error

* Linter

* Restore PerformError on rsAPI.PerformInvite

* Update sytest-whitelist

* Don't override PerformError with normal errors

* Fix error passing

* Un-whitelist a couple of tests

* Update sytest-whitelist

* Try to handle multiple invite rejections better

* nolint

* Update gomatrixserverlib

* Fix /v1/invite test

* Remove replace from go.mod
2020-08-17 11:40:49 +01:00
Neil Alexander
4b09f445c9
Configuration format v1 (#1230)
* Initial pass at refactoring config (not finished)

* Don't forget current state and EDU servers

* More shifting around

* Update server key API tests

* Fix roomserver test

* Fix more tests

* Further tweaks

* Fix current state server test (sort of)

* Maybe fix appservices

* Fix client API test

* Include database connection string in database options

* Fix sync API build

* Update config test

* Fix unit tests

* Fix federation sender build

* Fix gobind build

* Set Listen address for all services in HTTP monolith mode

* Validate config, reinstate appservice derived in directory, tweaks

* Tweak federation API test

* Set MaxOpenConnections/MaxIdleConnections to previous values

* Update generate-config
2020-08-10 14:18:04 +01:00
Kegsay
ea9df46c70
Implement local redaction (#1182)
* Create redaction events and apply checks (but do not send them)

* Send redactions to the roomserver

* Linting

* Slightly better wording
2020-07-03 17:24:51 +01:00
Kegsay
7c36fb78a7
Fix rooms v3 url paths for good - with tests (#1130)
* Fix rooms v3 url paths for good - with tests

- Add a test rig around `federationapi` to test routing.
- Use `JSONVerifier` over `KeyRing` so we can stub things out more easily.
- Add `test.NopJSONVerifier` which verifies nothing.
- Add `base.BaseMux` which is the original `mux.Router` used to spawn public/internal routers.
- Listen on `base.BaseMux` and not the default serve mux as it cleans paths which we don't want.
- Factor out `ListenAndServe` to `test.ListenAndServe` and add flag for listening on TLS.

* Fix comments

* Linting
2020-06-15 16:57:59 +01:00
Kegsay
ecd7accbad
Rehuffle where things are in the internal package (#1122)
renamed:    internal/eventcontent.go -> internal/eventutil/eventcontent.go
	renamed:    internal/events.go -> internal/eventutil/events.go
	renamed:    internal/types.go -> internal/eventutil/types.go
	renamed:    internal/http/http.go -> internal/httputil/http.go
	renamed:    internal/httpapi.go -> internal/httputil/httpapi.go
	renamed:    internal/httpapi_test.go -> internal/httputil/httpapi_test.go
	renamed:    internal/httpapis/paths.go -> internal/httputil/paths.go
	renamed:    internal/routing.go -> internal/httputil/routing.go
	renamed:    internal/basecomponent/base.go -> internal/setup/base.go
	renamed:    internal/basecomponent/flags.go -> internal/setup/flags.go
	renamed:    internal/partition_offset_table.go -> internal/sqlutil/partition_offset_table.go
	renamed:    internal/postgres.go -> internal/sqlutil/postgres.go
	renamed:    internal/postgres_wasm.go -> internal/sqlutil/postgres_wasm.go
	renamed:    internal/sql.go -> internal/sqlutil/sql.go
2020-06-12 14:55:57 +01:00
Kegsay
b7187a9a35
Remove clientapi producers which aren't actually producers (#1111)
* Remove clientapi producers which aren't actually producers

They are actually just convenience wrappers around the internal APIs
for roomserver/eduserver. Move their logic to their respective `api`
packages and call them directly.

* Remove TODO

* unbreak ygg
2020-06-10 12:17:54 +01:00
Neil Alexander
8a6152ca70
Enable room version 6 (#1087)
* Return bad request on CS API /send if bad JSON

* Return some more M_BAD_JSON in the right places

* nolint because damnit gocyclo all I added was a type check for an error

* Update gomatrixserverlib

* Update gomatrixserverlib

* Update sytest-whitelist

* Update gomatrixserverlib

* Update sytest-whitelist

* NotJSON -> BadJSON
2020-06-04 10:53:39 +01:00
Kegsay
24d8df664c
Fix #897 and shuffle directory around (#1054)
* Fix #897 and shuffle directory around

* Update find-lint

* goimports

Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>
2020-05-21 14:40:13 +01:00
Neil Alexander
9b1b095b49
Roomserver perform leave (#1004)
* First pass at PerformLeave

* Fix SQLite bulkSelectEventStateKey

* Update gomatrixserverlib

* Fix bugs

* Tidy a bit

* Satisfy King Linter

* Review comments

* Review comments

* Fix constants in SQLite event state keys table
2020-05-04 18:34:09 +01:00
Neil Alexander
e15f6676ac
Consolidation of roomserver APIs (#994)
* Consolidation of roomserver APIs

* Comment out alias tests for now, they are broken

* Wire AS API into roomserver again

* Roomserver didn't take asAPI param before so return to that

* Prevent roomserver asking AS API for alias info

* Rename some files

* Remove alias_test, incoherent tests and unwanted appservice integration

* Remove FS API inject on syncapi component
2020-05-01 10:48:17 +01:00
Neil Alexander
9045b8e89f
Perspective key fetching, some federation room join fixes (#975)
* Update gomatrixserverlib

* Test matrix.org as perspective key server

* Base64 decode better

* Optional strict validity checking in gmsl

* Update gomatrixserverlib

* Attempt to find missing auth events over federation (this shouldn't happen but I am guessing there is a synapse bug involved where we don't get all of the auth events)

* Update gomatrixserverlib, debug logging

* Remove debugging output

* More verbose debugging

* Print outliers

* Increase timeouts for testing, observe contexts before trying to join over more servers

* Don't block on roomserver (experimental)

* Don't block on roomserver

* Update gomatrixserverlib

* Update gomatrixserverlib

* Configurable perspective key fetchers

* Output number of configured keys for perspective

* Example perspective config included

* Undo debug stack trace

* Undo debug stack trace

* Restore original HTTP listener in monolith

* Fix lint

* Review comments

* Set default HTTP server timeout to 5 minutes now, block again when joining

* Don't use HTTP address for HTTPS whoops

* Update gomatrixserverlib

* Update gomatrixserverlib

* Update gomatrixserverlib

* Actually add perspectives

* Actually add perspectives

* Update gomatrixserverlib
2020-04-20 17:42:34 +01:00
Neil Alexander
05e1ae8745
Further room version wiring (#936)
* Room version 2 by default, other wiring updates, update gomatrixserverlib

* Fix nil pointer exception

* Fix some more nil pointer exceptions hopefully

* Update gomatrixserverlib

* Send all room versions when joining, not just stable ones

* Remove room version cquery

* Get room version when getting events from the roomserver database

* Reset default back to room version 2

* Don't generate event IDs unless needed

* Revert "Remove room version cquery"

This reverts commit a170d5873360dd059614460acc8b21ab2cda9767.

* Query room version in federation API, client API as needed

* Improvements to make_join send_join dance

* Make room server producers use headered events

* Lint tweaks

* Update gomatrixserverlib

* Versioned SendJoin

* Query room version in syncapi backfill

* Handle transaction marshalling/unmarshalling within Dendrite

* Sorta fix federation (kinda)

* whoops commit federation API too

* Use NewEventFromTrustedJSON when getting events from the database

* Update gomatrixserverlib

* Strip headers on federationapi endpoints

* Fix bug in clientapi profile room version query

* Update gomatrixserverlib

* Return more useful error if room version query doesn't find the room

* Update gomatrixserverlib

* Update gomatrixserverlib

* Maybe fix federation

* Fix formatting directive

* Update sytest whitelist and blacklist

* Temporarily disable room versions 3 and 4 until gmsl is fixed

* Fix count of EDUs in logging

* Update gomatrixserverlib

* Update gomatrixserverlib

* Update gomatrixserverlib

* Rely on EventBuilder in gmsl to generate the event IDs for us

* Some review comments fixed

* Move function out of common and into gmsl

* Comment in federationsender destinationqueue

* Update gomatrixserverlib
2020-03-27 16:28:22 +00:00
Neil Alexander
acb505b717
Implement gomatrixserverlib.HeaderedEvent in roomserver query API (#912)
* Implement gomatrixserverlib.HeaderedEvent, which should allow us to store room version headers along with the event across API boundaries and consumers/producers, and intercept unmarshalling to get the event structure right

* Add federationsender to previous
2020-03-16 17:29:52 +00:00
Neil Alexander
59a1f4b8ed
Remove httputil.LogThenError so that the line numbers are reported properly - make error reporting slightly more useful (#879) 2020-03-02 16:20:44 +00:00
Behouba Manassé
9937c05bea
Pass cfg by reference around the codebase (#819)
* Pass cfg by reference around the codebase

* Merge branch 'master' into pass-cfg-by-ref

Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>
2020-02-11 11:18:12 +00:00
Alex Chen
f8d2860765 Replace membership and visibility values with constants (#774)
Signed-off-by: Alex Chen <minecnly@gmail.com>
2019-08-06 15:07:36 +01:00
ruben
74827428bd use go module for dependencies (#594) 2019-05-21 21:56:55 +01:00
Renamed from src/github.com/matrix-org/dendrite/federationapi/routing/leave.go (Browse further)