| Commit message (Collapse) | Author | Age | Files | Lines |
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This is to discourage timing based profiling on the push gateways.
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Pushers tend to make many connections to the same HTTP host
(e.g. a new event comes in, causes events to be pushed, and then
the homeserver connects to the same host many times). Due to this
the per-host HTTP connection pool size was increased, but this does
not make sense for other SimpleHttpClients.
Add a parameter for the connection pool and override it for pushers
(making a separate SimpleHttpClient for pushers with the increased
configuration).
This returns the HTTP connection pool settings to the default Twisted
ones for non-pusher HTTP clients.
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Adds an optional keyword argument to the /relations API which
will recurse a limited number of event relationships.
This will cause the API to return not just the events related to the
parent event, but also events related to those related to the parent
event, etc.
This is disabled by default behind an experimental configuration
flag and is currently implemented using prefixed parameters.
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MSC3983 provides a way to request multiple OTKs at once from appservices,
this extends this concept to the Client-Server API.
Note that this will likely be spit out into a separate MSC, but is currently part of
MSC3983.
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Cleans-up the schema delta files:
* Removes no-op functions.
* Adds missing type hints to function parameters.
* Fixes any issues with type hints.
This also renames one (very old) schema delta to avoid a conflict
that mypy complains about.
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* no push for excluded room from sync
* add changelog
Signed-off-by: Maghen Calinghee <maghen.calinghee@beta.gouv.fr>
* correct changelog
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Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>
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It can be useful to always return the fallback key when attempting to
claim keys. This adds an unstable endpoint for `/keys/claim` which
always returns fallback keys in addition to one-time-keys.
The fallback key(s) are not marked as "used" unless there are no
corresponding OTKs.
This is currently defined in MSC3983 (although likely to be split out
to a separate MSC). The endpoint shape may change or be requested
differently (i.e. a keyword parameter on the current endpoint), but the
core logic should be reasonable.
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* Removed single-user resync usage and updated it to use multi-user counterpart
Signed-off-by: Alok Kumar Singh alokaks601@gmail.com
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Before this change:
* `PerspectivesKeyFetcher` and `ServerKeyFetcher` write to `server_keys_json`.
* `PerspectivesKeyFetcher` also writes to `server_signature_keys`.
* `StoreKeyFetcher` reads from `server_signature_keys`.
After this change:
* `PerspectivesKeyFetcher` and `ServerKeyFetcher` write to `server_keys_json`.
* `PerspectivesKeyFetcher` also writes to `server_signature_keys`.
* `StoreKeyFetcher` reads from `server_keys_json`.
This results in `StoreKeyFetcher` now using the results from `ServerKeyFetcher`
in addition to those from `PerspectivesKeyFetcher`, i.e. keys which are directly
fetched from a server will now be pulled from the database instead of refetched.
An additional minor change is included to avoid creating a `PerspectivesKeyFetcher`
(and checking it) if no `trusted_key_servers` are configured.
The overall impact of this should be better usage of cached results:
* If a server has no trusted key servers configured then it should reduce how often keys
are fetched.
* if a server's trusted key server does not have a requested server's keys cached then it
should reduce how often keys are directly fetched.
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* Switch InstanceLocationConfig to a pydantic BaseModel, apply Strict* types and add a few helper methods(that will make more sense in follow up work).
Co-authored-by: David Robertson <davidr@element.io>
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Pulls out some methods to `BaseHttpClient` to eventually be
reused in other contexts.
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* More precise type for LoggingTransaction.execute
* Add an annotation for stream_ordering_month_ago
This would have spotted the error that was fixed in "Add comma missing from #15382. (#15429)"
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c.f. #15264
The two changes are:
1. Add indexes so that the select / deletes don't do sequential scans
2. Don't repeatedly call `SELECT count(*)` each iteration, as that's slow
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* Enable `directory`
* move to worker store
* newsfile
* disable `ClientDirectoryListServer` and `ClientAppserviceDirectoryListServer` for workers
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The registration fallback is broken and unspecced. This removes it
since there is no plan to spec it.
Note that this does not modify the login fallback code.
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received server keys. (#15423)
* Change `store_server_verify_keys` to take a `Mapping[(str, str), FKR]`
This is because we already can't handle duplicate keys — leads to cardinality violation
* Newsfile
Signed-off-by: Olivier Wilkinson (reivilibre) <oliverw@matrix.org>
---------
Signed-off-by: Olivier Wilkinson (reivilibre) <oliverw@matrix.org>
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* Add missing comma
* Newsfile
Signed-off-by: Olivier Wilkinson (reivilibre) <oliverw@matrix.org>
---------
Signed-off-by: Olivier Wilkinson (reivilibre) <oliverw@matrix.org>
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This moves `redacts` from being a top-level property to
a `content` property in a new room version.
MSC2176 (which was previously implemented) states to not
`redact` this property.
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* raise a ConfigError on an invalid app_service_config_files
* changelog
* Move config check to read_config
* Add test
* Ensure list also contains strings
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Refer to the correct field from the response when updating
the background update progress.
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This will be done in a future room version, for now an unstable
room version is added which redacts the origin field.
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This change fixes a rare bug where initial /syncs would fail with a
`KeyError` under the following circumstances:
1. A user fast joins a remote room.
2. The user is kicked from the room before the room's full state has
been synced.
3. A second local user fast joins the room.
4. Events are backfilled into the room with a higher topological
ordering than the original user's leave. They are assigned a
negative stream ordering. It's not clear how backfill happened here,
since it is expected to be equivalent to syncing the full state.
5. The second local user leaves the room before the room's full state
has been synced. The homeserver does not complete the sync.
6. The original user performs an initial /sync with lazy_load_members
enabled.
* Because they were kicked from the room, the room is included in
the /sync response even though the include_leave option is not
specified.
* To populate the room's timeline, `_load_filtered_recents` /
`get_recent_events_for_room` fetches events with a lower stream
ordering than the leave event and picks the ones with the highest
topological orderings (which are most recent). This captures the
backfilled events after the leave, since they have a negative
stream ordering. These events are filtered out of the timeline,
since the user was not in the room at the time and cannot view
them. The sync code ends up with an empty timeline for the room
that notably does not include the user's leave event.
This seems buggy, but at least we don't disclose events the user
isn't allowed to see.
* Normally, `compute_state_delta` would fetch the state at the
start and end of the room's timeline to generate the sync
response. Since the timeline is empty, it fetches the state at
`min(now, last event in the room)`, which corresponds with the
second user's leave. The state during the entirety of the second
user's membership does not include the membership for the first
user because of partial state.
This part is also questionable, since we are fetching state from
outside the bounds of the user's membership.
* `compute_state_delta` then tries and fails to find the user's
membership in the auth events of timeline events. Because there
is no timeline event whose auth events are expected to contain
the user's membership, a `KeyError` is raised.
Also contains a drive-by fix for a separate unlikely race condition.
Signed-off-by: Sean Quah <seanq@matrix.org>
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This uses the specced /_matrix/app/v1/... paths instead of the
"legacy" paths. If the homeserver receives an error it will retry
using the legacy path.
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* Add IReactorUNIX to ISynapseReactor type hint.
* Create listen_unix().
Two options, 'path' to the file and 'mode' of permissions(not umask, recommend 666 as default as
nginx/other reverse proxies write to it and it's setup as user www-data)
For the moment, leave the option to always create a PID lockfile turned on by default
* Create UnixListenerConfig and wire it up.
Rename ListenerConfig to TCPListenerConfig, then Union them together into ListenerConfig.
This spidered around a bit, but I think I got it all. Metrics and manhole have been placed
behind a conditional in case of accidental putting them onto a unix socket.
Use new helpers to get if a listener is configured for TLS, and to help create a site tag
for logging.
There are 2 TODO things in parse_listener_def() to finish up at a later point.
* Refactor SynapseRequest to handle logging correctly when using a unix socket.
This prevents an exception when an IP address can not be retrieved for a request.
* Make the 'Synapse now listening on Unix socket' log line a little prettier.
* No silent failures on generic workers when trying to use a unix socket with metrics or manhole.
* Inline variables in app/_base.py
* Update docstring for listen_unix() to remove reference to a hardcoded permission of 0o666 and add a few comments saying where the default IS declared.
* Disallow both a unix socket and a ip/port combo on the same listener resource
* Linting
* Changelog
* review: simplify how listen_unix returns(and get rid of a type: ignore)
* review: fix typo from ConfigError in app/homeserver.py
* review: roll conditional for http_options.tag into get_site_tag() helper(and add docstring)
* review: enhance the conditionals for checking if a port or path is valid, remove a TODO line
* review: Try updating comment in get_client_ip_if_available to clarify what is being retrieved and why
* Pretty up how 'Synapse now listening on Unix Socket' looks by decoding the byte string.
* review: In parse_listener_def(), raise ConfigError if neither socket_path nor port is declared(and fix a typo)
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* Revert "Fix registering a device on an account with lots of devices (#15348)"
This reverts commit f0d8f66eaaacfa75bed65bc5d0c602fbc5339c85.
* Revert "Delete stale non-e2e devices for users, take 3 (#15183)"
This reverts commit 78cdb72cd6b0e007c314d9fed9f629dfc5b937a6.
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event_push_{actions,actions_staging,summary} (#15350)"
This reverts commit 2a234b788e2b5706ee83cf8eb86dfd004bc7c166.
See #15359 for context.
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event_push_{actions,actions_staging,summary} (#15350)
Clean-up from adding the thread_id column, which was initially
null but backfilled with values. It is desirable to require it to now
be non-null.
In addition to altering this column to be non-null, we clean up
obsolete background jobs, indexes, and just-in-time updating
code.
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(#15349)
Co-authored-by: reivilibre <oliverw@matrix.org>
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Tests now take 40% of the time.
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If enabled, for users which are exclusively owned by an application
service then the appservice will be queried for devices in addition
to any information stored in the Synapse database.
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Previously, we would spin in a tight loop until
`update_state_for_partial_state_event` stopped raising
`FederationPullAttemptBackoffError`s. Replace the spinloop with a wait
until the backoff period has expired.
Signed-off-by: Sean Quah <seanq@matrix.org>
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Signed-off-by: Warren Bailey <warren@warrenbailey.net>
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* Update mailer.py
Fix `KeyError: 'app'`
* Create 15352.bugfix
Signed-off-by: Cyberes <cyberes@evulid.cc>
---------
Signed-off-by: Cyberes <cyberes@evulid.cc>
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Fixes up #15183
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This reverts commit e6af49fbea939d9e69ed05e0a0ced5948c722ea4.
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This should help reduce the number of devices e.g. simple bots the repeatedly login rack up.
We only delete non-e2e devices as they should be safe to delete, whereas if we delete e2e devices for a user we may accidentally break their ability to receive e2e keys for a message.
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* Fix joining rooms you have been unbanned from
Since forever synapse did not allow you to join a room after you have
been unbanned from it over federation. This was not actually because of
the unban event not federating. Synapse simply used outdated state to
validate the join transition. This skips the validation if we are not in
the room and for that reason won't have the current room state.
Fixes #1563
Signed-off-by: Nicolas Werner <nicolas.werner@hotmail.de>
* Add changelog
Signed-off-by: Nicolas Werner <nicolas.werner@hotmail.de>
* Update changelog.d/15323.bugfix
---------
Signed-off-by: Nicolas Werner <nicolas.werner@hotmail.de>
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Experimental support for MSC3983 is behind a configuration flag.
If enabled, for users which are exclusively owned by an application
service then the appservice will be queried for one-time keys *if*
there are none uploaded to Synapse.
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* Bump ruff from 0.0.252 to 0.0.259
Bumps [ruff](https://github.com/charliermarsh/ruff) from 0.0.252 to 0.0.259.
- [Release notes](https://github.com/charliermarsh/ruff/releases)
- [Changelog](https://github.com/charliermarsh/ruff/blob/main/BREAKING_CHANGES.md)
- [Commits](https://github.com/charliermarsh/ruff/compare/v0.0.252...v0.0.259)
---
updated-dependencies:
- dependency-name: ruff
dependency-type: direct:development
update-type: version-update:semver-patch
...
Signed-off-by: dependabot[bot] <support@github.com>
* Fix new warnings
* Mypy
* Newsfile
---------
Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Erik Johnston <erik@matrix.org>
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Rather than keeping them around forever in memory, slowing things down.
Fixes #11750.
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documentation mechanism using Sphinx. (#15265)
Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>
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directory tables. (#15316)
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(#15280)
This makes it so that we rely on the `device_id` to delete pushers on logout,
instead of relying on the `access_token_id`. This ensures we're not removing
pushers on token refresh, and prepares for a world without access token IDs
(also known as the OIDC).
This actually runs the `set_device_id_for_pushers` background update, which
was forgotten in #13831.
Note that for backwards compatibility it still deletes pushers based on the
`access_token` until the background update finishes.
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Invalid mentions data received over the Client-Server API should
be rejected with a 400 error. This will hopefully stop clients from
sending invalid data, although does not help with data received
over federation.
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* Add `event_stream_ordering` column to membership state tables
Specifically this adds the column to `current_state_events`,
`local_current_membership` and `room_memberships`. Each of these tables
is regularly joined with the `events` table to get the stream ordering
and denormalising this into each table will yield significant query
performance improvements once used.
* Make denormalised `event_stream_ordering` columns foreign keys
* Add comment in schema file explaining new denormalised columns
* Add triggers to enforce consistency of `event_stream_ordering` columns
* Re-order purge room tables to account for foreign keys
* Bump schema version to 75
Co-authored-by: David Robertson <david.m.robertson1@gmail.com>
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
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Co-authored-by: Patrick Cloke <patrickc@matrix.org>
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Additionally:
* Consistently use `freeze()` in test
---------
Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>
Co-authored-by: 6543 <6543@obermui.de>
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passed to the script exists before trying to port from it (#15306)
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* Have replication clients remove _INT_STREAM_POS
Suppose worker A makes an internal http request from worker B. B may
make changes that A later learns about over replication. We want A's
request to block until it has seen those changes—mainly to ensure A's
caches are invalidated promptly. This helps provide read-after-write
consistency, eliminating entire categories of races and test flakes.
To implement this, B includes a top-level field `_INT_STREAM_POS` in its
response JSON. Roughly speaking, the field's value tells A what to wait
for. But we weren't removing that internal field before A's request
completed!
Introduced in https://github.com/matrix-org/synapse/pull/14820.
Fixes #15308.
* Changelog
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`True` (#15297)
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return 404 if event exists, but the user lacks access (#15300)
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found (#15298)
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When a room is deleted in Synapse we remove the event forward
extremities in the room, so if (say a bot) tries to send a message into
the room we error out due to not being able to calculate prev events for
the new event *before* we check if the sender is in the room.
Fixes #8094
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Separates REST layer code from the actual URL previewing.
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With Redis commands do not need to be re-issued by the main
process (they fan-out to all processes at once) and thus it is no
longer necessary to worry about them reflecting recursively forever.
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Signed-off-by: Tulir Asokan <tulir@maunium.net>
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user directory. [rei:userdirpriv] (#14756)
* Scaffolding for background process to refresh profiles
* Add scaffolding for background process to refresh profiles for a given server
* Implement the code to select servers to refresh from
* Ensure we don't build up multiple looping calls
* Make `get_profile` able to respect backoffs
* Add logic for refreshing users
* When backing off, schedule a refresh when the backoff is over
* Wake up the background processes when we receive an interesting state event
* Add tests
* Newsfile
Signed-off-by: Olivier Wilkinson (reivilibre) <oliverw@matrix.org>
* Add comment about 1<<62
---------
Signed-off-by: Olivier Wilkinson (reivilibre) <oliverw@matrix.org>
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membership state events represent a profile change. [rei:userdirpriv] (#14755)
* Remove special-case method for new memberships only, use more generic method
* Only collect profiles from state events in public rooms
* Add a table to track stale remote user profiles
* Add store methods to set and delete rows in this new table
* Mark remote profiles as stale when a member state event comes in to a private room
* Newsfile
Signed-off-by: Olivier Wilkinson (reivilibre) <oliverw@matrix.org>
* Simplify by removing Optionality of `event_id`
* Replace names and avatars with None if they're set to dodgy things
I think this makes more sense anyway.
* Move schema delta to 74 (I missed the boat?)
* Turns out these can be None after all
---------
Signed-off-by: Olivier Wilkinson (reivilibre) <oliverw@matrix.org>
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(#15247)
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It is not necessary to reach out to the database to check some
parameters if the auto-join rooms are not configured, or (in some cases)
if auto-create rooms is not configured.
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* Reproduce bad scenario in test
* Avoid catchup optimisation for partial state rooms
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* Tweak docstring and type hint
* Flip logic and provide better name
* Separate decision from action
* Track a set of strings, not EventBases
* Require explicit boolean options from callers
* Add explicit option for partial state rooms
* Changelog
* Rename param
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`on_remove_user_third_party_identifier` module api callbacks (#15227
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* Give PyCharm some help with `@cache_in_self`
* Changelog
* Fix import for old python versions
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When pushing events in partial state rooms down incremental /sync, we
try to find the `m.room.member` state event for their senders by digging
through their auth events, so that we can present the membership to the
client. Events usually have a membership event in their auth events,
with the exception of the `m.room.create` event and a user's first join
into the room.
When implementing #13477, we took the case of a user's first join into
account, but forgot to handle the `m.room.create` case. This change
fixes that.
Signed-off-by: Sean Quah <seanq@matrix.org>
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And fix any issues from having those type hints.
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creating a room. (#15229)
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This removes the experimental configuration option and
always escapes the push rule condition keys.
Also escapes any (experimental) push rule condition keys
in the base rules which contain dot in a field name.
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This removes the configuration flag & updates the identifiers to
use the stable version.
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We look up keys in batches, but we should do that outside of the
transaction to avoid starving the database pool.
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This allows Synapse to properly include the transaction ID in the
unsigned data of events.
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Enables MSC3925 support by default, which:
* Includes the full edit event in the bundled aggregations of an
edited event.
* Stops modifying the original event's content to return the new
content from the edit event.
This is a backwards-incompatible change that is considered to be
"correct" by the spec.
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This removes the configuration flag & updates the identifiers to
use the stable version.
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AbstractStreamIdTracker (now) has only a single sub-class: AbstractStreamIdGenerator,
combine them to simplify some code and remove any direct references to
AbstractStreamIdTracker.
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`/rooms/<room_id>/batch_send` endpoint. (#15199)
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account data writer worker (#14869)
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`MultiWriterIdGenerator` (#15191
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`exact_event_property_contains` (MSC3966). (#15051)
This replaces the specific `is_user_mention` push rule condition
used in MSC3952 with the generic `exact_event_property_contains`
push rule condition from MSC3966.
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signing keys (#15077)
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It turns out that no clients rely on server-side aggregation of `m.annotation`
relationships: it's just not very useful as currently implemented.
It's also non-trivial to calculate.
I want to remove it from MSC2677, so to keep the implementation in line, let's
remove it here.
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This only affects deployments using workers.
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to the list of ignored users if there was an initial sync cached. (#15163)
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* Admin api to delete event report
* lint + tests
* newsfile
* Apply suggestions from code review
Co-authored-by: David Robertson <david.m.robertson1@gmail.com>
* revert changes - move to WorkerStore
* update unit test
* Note that timestamp is in millseconds
---------
Co-authored-by: David Robertson <david.m.robertson1@gmail.com>
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* Remove dangling reference to being a reference implementation
* Create 15167.misc
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* Removes the `v1` directory from `test.rest.media.v1`.
* Moves the non-REST code from `synapse.rest.media.v1` to `synapse.media`.
* Flatten the `v1` directory from `synapse.rest.media`, but leave compatiblity
with 3rd party media repositories and spam checkers.
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* Fix a long-standing bug where non-ASCII characters in search terms,
including accented letters, would not match characters in a different
case.
* Fix a long-standing bug where search terms using combining accents
would not match display names using precomposed accents and vice
versa.
To fully take effect, the user directory must be rebuilt after this
change.
Fixes #14630.
Signed-off-by: Sean Quah <seanq@matrix.org>
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Previously if an autodiscovered oEmbed request failed (e.g. the
oEmbed endpoint is down or does not exist) then the entire URL
preview would fail. Instead we now return everything we can, even
if this additional request fails.
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Ideally we would replace this with parsing of the Accept header
or something else, but for now just make Synapse spec compliant
by ignoring the unspecced parameter.
It does not seem that this is ever sent by a client, and even if it is
there's a reasonable fallback.
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Previously the experimental configuration option referred to the wrong
MSC number.
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To directly write to the open file, instead of writing to an
in-memory string first.
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* Change `create_room` return type
* Don't return room alias from /createRoom
* Update other callsites
* Fix up mypy complaints
It looks like new_room_user_id is None iff new_room_id is None. It's a
shame we haven't expressed this in a way that mypy can understand.
* Changelog
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to catch up. (#15120)Co-authored-by: Sean Quah <8349537+squahtx@users.noreply.github.com>
* Improve logging messages for the 'wait for repl stream' read-after-write consistency feature
* Newsfile
Signed-off-by: Olivier Wilkinson (reivilibre) <oliverw@matrix.org>
* Update synapse/replication/tcp/client.py
Co-authored-by: Sean Quah <8349537+squahtx@users.noreply.github.com>
---------
Signed-off-by: Olivier Wilkinson (reivilibre) <oliverw@matrix.org>
Co-authored-by: Sean Quah <8349537+squahtx@users.noreply.github.com>
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* Sort BOOLEAN_COLUMNS and APPEND_ONLY_TABLES
So I can see if a given table is present in logarithmic time, rather
than linear.
* Teach portdb about `un_partial_stated_event_streams`
* Comments comments comments
* Changelog
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* Allow health listener resource to load.
* changelog
* Update changelog.d/15096.bugfix
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using ICU for search term tokenisation would fail with an error. (#15079)
Co-authored-by: David Robertson <davidr@element.io>
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* Add account data to to export command
* newsfile
* remove not needed function
* update newsfile
* adopt #14973
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Previously, when creating a join event in /make_join, we would decide
whether to include additional fields to satisfy restricted room checks
based on the current state of the room. Then, when building the event,
we would capture the forward extremities of the room to use as prev
events.
This is subject to race conditions. For example, when leaving and
rejoining a room, the following sequence of events leads to a misleading
403 response:
1. /make_join reads the current state of the room and sees that the user
is still in the room. It decides to omit the field required for
restricted room joins.
2. The leave event is persisted and the room's forward extremities are
updated.
3. /make_join builds the event, using the post-leave forward extremities.
The event then fails the restricted room checks.
To mitigate the race, we move the read of the forward extremities closer
to the read of the current state. Ideally, we would compute the state
based off the chosen prev events, but that can involve state resolution,
which is expensive.
Signed-off-by: Sean Quah <seanq@matrix.org>
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* Update mypy and mypy-zope
* Remove unused ignores
These used to suppress
```
synapse/storage/engines/__init__.py:28: error: "__new__" must return a
class instance (got "NoReturn") [misc]
```
and
```
synapse/http/matrixfederationclient.py:1270: error: "BaseException" has no attribute "reasons" [attr-defined]
```
(note that we check `hasattr(e, "reasons")` above)
* Avoid empty body warnings, sometimes by marking methods as abstract
E.g.
```
tests/handlers/test_register.py:58: error: Missing return statement [empty-body]
tests/handlers/test_register.py:108: error: Missing return statement [empty-body]
```
* Suppress false positive about `JaegerConfig`
Complaint was
```
synapse/logging/opentracing.py:450: error: Function "Type[Config]" could always be true in boolean context [truthy-function]
```
* Fix not calling `is_state()`
Oops!
```
tests/rest/client/test_third_party_rules.py:428: error: Function "Callable[[], bool]" could always be true in boolean context [truthy-function]
```
* Suppress false positives from ParamSpecs
````
synapse/logging/opentracing.py:971: error: Argument 2 to "_custom_sync_async_decorator" has incompatible type "Callable[[Arg(Callable[P, R], 'func'), **P], _GeneratorContextManager[None]]"; expected "Callable[[Callable[P, R], **P], _GeneratorContextManager[None]]" [arg-type]
synapse/logging/opentracing.py:1017: error: Argument 2 to "_custom_sync_async_decorator" has incompatible type "Callable[[Arg(Callable[P, R], 'func'), **P], _GeneratorContextManager[None]]"; expected "Callable[[Callable[P, R], **P], _GeneratorContextManager[None]]" [arg-type]
````
* Drive-by improvement to `wrapping_logic` annotation
* Workaround false "unreachable" positives
See https://github.com/Shoobx/mypy-zope/issues/91
```
tests/http/test_proxyagent.py:626: error: Statement is unreachable [unreachable]
tests/http/test_proxyagent.py:762: error: Statement is unreachable [unreachable]
tests/http/test_proxyagent.py:826: error: Statement is unreachable [unreachable]
tests/http/test_proxyagent.py:838: error: Statement is unreachable [unreachable]
tests/http/test_proxyagent.py:845: error: Statement is unreachable [unreachable]
tests/http/federation/test_matrix_federation_agent.py:151: error: Statement is unreachable [unreachable]
tests/http/federation/test_matrix_federation_agent.py:452: error: Statement is unreachable [unreachable]
tests/logging/test_remote_handler.py:60: error: Statement is unreachable [unreachable]
tests/logging/test_remote_handler.py:93: error: Statement is unreachable [unreachable]
tests/logging/test_remote_handler.py:127: error: Statement is unreachable [unreachable]
tests/logging/test_remote_handler.py:152: error: Statement is unreachable [unreachable]
```
* Changelog
* Tweak DBAPI2 Protocol to be accepted by mypy 1.0
Some extra context in:
- https://github.com/matrix-org/python-canonicaljson/pull/57
- https://github.com/python/mypy/issues/6002
- https://mypy.readthedocs.io/en/latest/common_issues.html#covariant-subtyping-of-mutable-protocol-members-is-rejected
* Pull in updated canonicaljson lib
so the protocol check just works
* Improve comments in opentracing
I tried to workaround the ignores but found it too much trouble.
I think the corresponding issue is
https://github.com/python/mypy/issues/12909. The mypy repo has a PR
claiming to fix this (https://github.com/python/mypy/pull/14677) which
might mean this gets resolved soon?
* Better annotation for INTERACTIVE_AUTH_CHECKERS
* Drive-by AUTH_TYPE annotation, to remove an ignore
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(MSC3758). (#15037)
This replaces the specific `is_room_mention` push rule condition
used in MSC3952 with the generic `exact_event_match` push rule
condition from MSC3758.
No functionality changes due to this.
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(#15074)
Previously we would give up upon receiving a 404 from the first server,
instead of trying the rest of the servers in the list.
Signed-off-by: Sean Quah <seanq@matrix.org>
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Note that this is only used for key-value store (cached values)
and not for the pub/sub replication used by Synapse.
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* Fix order of partial state tables when purging
`partial_state_rooms` has an FK on `events` pointing to the join event we
get from `/send_join`, so we must delete from that table before deleting
from `events`.
**NB:** It would be nice to cancel any resync processes for the room
being purged. We do not do this at present. To do so reliably we'd need
an internal HTTP "replication" endpoint, because the worker doing the
resync process may be different to that handling the purge request.
The first time the resync process tries to write data after the deletion
it will fail because we have deleted necessary data e.g. auth
events. AFAICS it will not retry the resync, so the only downside to
not cancelling the resync is a scary-looking traceback.
(This is presumably extremely race-sensitive.)
* Changelog
* admist(?) -> between
* Warn about a race
* Fix typo, thanks Sean
Co-authored-by: Sean Quah <8349537+squahtx@users.noreply.github.com>
---------
Co-authored-by: Sean Quah <8349537+squahtx@users.noreply.github.com>
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array. (#15045)
The `exact_event_property_contains` condition can be used to
search for a value inside of an array.
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(#15069)
...when lazy loading of members is not enabled. It's weird to notify
a client that another user's device list has changed when the client
doesn't think that they share a room.
Note that when a room is un-partial stated, device list updates are
emitted for every member in that room over /sync.
Signed-off-by: Sean Quah <seanq@matrix.org>
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* Fix clashing DB txn name
* Newsfile
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(#14980)
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Signed-off-by: Harishankar Kumar <hari01584@gmail.com>
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`/hierarchy` to clarify the condition for a room being visible. (#14834)
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separate args (#15053)
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* Apply logging from hotfixes branch to develop
Part of #4826.
Originally added in #11882.
* Changelog
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Fixes #12801.
Complement tests are at
https://github.com/matrix-org/complement/pull/567.
Avoid blocking on full state when handling a subsequent join into a
partial state room.
Also always perform a remote join into partial state rooms, since we do
not know whether the joining user has been banned and want to avoid
leaking history to banned users.
Signed-off-by: Mathieu Velten <mathieuv@matrix.org>
Co-authored-by: Sean Quah <seanq@matrix.org>
Co-authored-by: David Robertson <davidr@element.io>
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It's important that collections returned from `@cached` methods are not
modified, otherwise future retrievals from the cache will return the
modified collection.
This applies to the return values from `@cached` methods and the values
inside the dictionaries returned by `@cachedList` methods. It's not
necessary for the dictionaries returned by `@cachedList` methods
themselves to be read-only.
Signed-off-by: Sean Quah <seanq@matrix.org>
Co-authored-by: David Robertson <davidr@element.io>
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This specifies to search for an exact value match, instead of
string globbing. It only works across non-compound JSON values
(null, boolean, integer, and strings).
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The per-room account data is no longer unconditionally
fetched, even if all rooms will be filtered out.
Global account data will not be fetched if it will all be
filtered out.
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* Bump schema version
This should have been included in
f10caa73eee0caa91cf373966104d1ededae2aee (and #14979).
* Changelog
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The previous version of the code could mutate a cached value,
but only if the input requested all devices of a user *and* a specific
device.
To avoid this nonsensical situation we no longer fetch a specific
device ID if all of a user's devices are returned.
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Fixes #15010.
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* Systematically include worker name as process info
* Changelog
* don't bother with inner setdefault
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state groups (#14675)
* add class UnpersistedEventContext
* modify create new client event to create unpersistedeventcontexts
* persist event contexts after creation
* fix tests to persist unpersisted event contexts
* cleanup
* misc lints + cleanup
* changelog + fix comments
* lints
* fix batch insertion?
* reduce redundant calculation
* add unpersisted event classes
* rework compute_event_context, split into function that returns unpersisted event context and then persists it
* use calculate_context_info to create unpersisted event contexts
* update typing
* $%#^&*
* black
* fix comments and consolidate classes, use attr.s for class
* requested changes
* lint
* requested changes
* requested changes
* refactor to be stupidly explicit
* clearer renaming and flow
* make partial state non-optional
* update docstrings
---------
Co-authored-by: Erik Johnston <erik@matrix.org>
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Respond with a 405 error if a request is received on a known endpoint,
but to an unknown method, per MSC3743.
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This might cause incorrect data in other callers which
are not expecting the canonical alias to be added into
the response.
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sending bursts of events to a local room (#14977)
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This disambiguates keys which attempt to match fields
with a dot in them (e.g. m.relates_to).
Disabled by default behind an experimental configuration flag.
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A backwards-compatible piece of #14979 that's safe to land now.
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This reverts commit 5fdc12f482c68e2cdbb78d7db5de2cfe621720d4.
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* Fix MediaStorage type hint
* Typecheck tests.rest.media.v1.test_media_storage
* Changelog
* Remove assert and make the comment succinct
* Fix syntax for olddeps
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* Tweak http types in Synapse
AFACIS these are correct, and they make mypy happier on tests.http.
* Type hints for test_proxyagent
* type hints for test_srv_resolver
* test_matrix_federation_agent
* tests.http.server._base
* tests.http.__init__
* tests.http.test_additional_resource
* tests.http.test_client
* tests.http.test_endpoint
* tests.http.test_matrixfederationclient
* tests.http.test_servlet
* tests.http.test_simple_client
* tests.http.test_site
* One fixup in tests.server
* Untyped defs
* Changelog
* Fixup syntax for Python 3.7
* Fix olddeps syntax
* Use a twisted IPv4 addr for dummy_address
* Fix typo, thanks Sean
Co-authored-by: Sean Quah <8349537+squahtx@users.noreply.github.com>
* Remove redundant `Optional`
---------
Co-authored-by: Sean Quah <8349537+squahtx@users.noreply.github.com>
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This adds an `event_stream_ordering` column to `current_state_events`,
`local_current_membership` and `room_memberships`. Each of these tables
is regularly joined with the `events` table to get the stream ordering
and denormalising this into each table will yield significant query
performance improvements once used. Includes a background job to
populate these values from the `events` table.
Same idea as https://github.com/matrix-org/synapse/pull/13703.
Signed off by Nick @ Beeper (@fizzadar).
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* Accept a Sequence of events in synapse.appservice
This avoids some casts/ignores in the tests I'm about to fixup. It seems
that `List[Mock]` is not a subtype of `List[EventBase]`, but
`Sequence[Mock]` is a subtype of `Sequence[EventBase]`. So presumably
`Mock` is considered a subtype of anything, much like `Any`.
* make tests.appservice.test_scheduler pass mypy
* Extra hints in tests.appservice.test_scheduler
* Extra hints in tests.appservice.test_api
* Extra hints in tests.appservice.test_appservice
* Disallow untyped defs
* Changelog
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* Only notify the target of a membership event
Naughty, but should be a big speedup in large rooms
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Co-authored-by: Brad Murray <brad@beeper.com>
Co-authored-by: Nick Barrett <nick@beeper.com>
Copy the suppress_edits push rule from Beeper to implement MSC3958.
https://github.com/beeper/synapse/blame/9415a1284b1bfb558bd66f28c24ca1611e6c6fa2/rust/src/push/base_rules.rs#L98-L114
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If the feature is enabled and the event has a `m.mentions` property,
skip processing of the legacy mentions rules.
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Ensure that the list of servers in a partial state room always contains
the server we joined off.
Also refactor `get_partial_state_servers_at_join` to return `None` when
the given room is no longer partial stated, to explicitly indicate when
the room has partial state. Otherwise it's not clear whether an empty
list means that the room has full state, or the room is partial stated,
but the server we joined off told us that there are no servers in the
room.
Signed-off-by: Sean Quah <seanq@matrix.org>
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Since pyo3-log is initialized very early in the Python start-up
it caches the state of the loggers before they're fully initialized
(and thus are essentially disabled). Whenever we reload the
logging configuration we now also tell pyo3-log to discard
any cached logging configuration it has; it will refetch the
current logging configuration from Python at the next point
it logs.
This fixes Rust log lines not appearing in the homeserver logs.
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If a sync request does not need to calculate per-room entries &
is not generating presence & is not generating device list data
(e.g. during initial sync) avoid the expensive calculation of room
specific data.
This is a micro-optimisation for clients syncing simply to receive
to-device information.
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(#14970)
This expands the previous optimisation from being only for initial
sync to being for all sync requests.
It also inverts some of the logic to be inclusive instead of exclusive.
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Signed-off-by: Jason Little realtyem@gmail.com
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The `parse_enum` helper pulls an enum value from the query string
(by delegating down to the parse_string helper with values generated
from the enum).
This is used to pull out "f" and "b" in most places and then we thread
the resulting Direction enum throughout more code.
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The previous assumption was that the stream_id column was unique
(for a room ID, receipt type, user ID tuple), but this turned out to be
incorrect.
Now find the max stream ID, then map this back to a database-specific
row identifier and delete other rows which match the (room ID, receipt type,
user ID) tuple, but *not* the row ID.
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* The user's profile information.
* The user's devices.
* The user's connections / IP address information.
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* Tag /send_join responses to detect faster joins
* Changelog
* Define a proper SynapseTag
* isort
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`run_in_background` calls re-use the current logging context. When they
are not awaited, they can complete after the current logging context has
been marked as finished, which leads to log spam. Use
`run_as_background_process` instead.
Fixes one of the instances of #13090.
Signed-off-by: Sean Quah <seanq@matrix.org>
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#14910 fixed the regression introduced by #13873 where sqlite database
migrations would no longer run inside a transaction. However, it
committed the transaction before Synapse updated its bookkeeping of
which migrations have been run, which means that migrations may be run
again after they have completed successfully.
Leave the transaction open at the end of `executescript`, to restore the
old, correct behaviour. Also make the PostgreSQL behaviour consistent
with SQLite.
Fixes #14909.
Signed-off-by: Sean Quah <seanq@matrix.org>
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* Better test for bad values in power levels events
The previous test only checked that Synapse didn't raise an exception,
but didn't check that we had correctly interpreted the value of the
dodgy power level.
It also conflated two things: bad room notification levels, and bad user
levels. There _is_ logic for converting the latter to integers, but we
should test it separately.
* Check we ignore types that don't convert to int
* Handle `None` values in `notifications.room`
* Changelog
* Also test that bad values are rejected by event auth
* Docstring
* linter scripttttttttt
* Test boolean values in PL content
* Reject boolean power levels
* Changelog
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* Perfer `type(x) is int` to `isinstance(x, int)`
This covered all additional instances I could see where `x` was
user-controlled.
The remaining cases are
```
$ rg -s 'isinstance.*[^_]int'
tests/replication/_base.py
576: if isinstance(obj, int):
synapse/util/caches/stream_change_cache.py
136: assert isinstance(stream_pos, int)
214: assert isinstance(stream_pos, int)
246: assert isinstance(stream_pos, int)
267: assert isinstance(stream_pos, int)
synapse/replication/tcp/external_cache.py
133: if isinstance(result, int):
synapse/metrics/__init__.py
100: if isinstance(calls, (int, float)):
synapse/handlers/appservice.py
262: assert isinstance(new_token, int)
synapse/config/_util.py
62: if isinstance(p, int):
```
which cover metrics, logic related to `jsonschema`, and replication and
data streams. AFAICS these are all internal to Synapse
* Changelog
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* Better test for bad values in power levels events
The previous test only checked that Synapse didn't raise an exception,
but didn't check that we had correctly interpreted the value of the
dodgy power level.
It also conflated two things: bad room notification levels, and bad user
levels. There _is_ logic for converting the latter to integers, but we
should test it separately.
* Check we ignore types that don't convert to int
* Handle `None` values in `notifications.room`
* Changelog
* Also test that bad values are rejected by event auth
* Docstring
* linter scripttttttttt
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MSC3952 defines push rules which searches for mentions in a list of
Matrix IDs in the event body, instead of searching the entire event
body for display name / local part.
This is implemented behind an experimental configuration flag and
does not yet implement the backwards compatibility pieces of the MSC.
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* Batch look-ups to see if rooms are partial stated.
* Fix issues found in linting.
* Fix typo.
* Apply suggestions from code review
Co-authored-by: Sean Quah <8349537+squahtx@users.noreply.github.com>
* Clarify comments.
Co-authored-by: Sean Quah <8349537+squahtx@users.noreply.github.com>
* Also improve the cache size while we're at it
* is_partial_state_rooms -> is_partial_state_room_batched
* Run `black`
* Improve annotation for `simple_select_many_batch`
* Fix is_partial_state_room_batched impl
* Okay, _actually_ fix impl
* Update description.
* Update synapse/storage/databases/main/room.py
Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>
* Run black.
Co-authored-by: Sean Quah <8349537+squahtx@users.noreply.github.com>
Co-authored-by: David Robertson <davidr@element.io>
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On startup, the `_device_list_id_gen` stream id generator is initialized
using the maximum stream id seen in a list of tables. When we started
populating the `device_list_remote_pending` table in #13913, we forgot
to add it to the aforementioned list of tables, so the stream id
generator can hand out old stream ids after a restart. The end result is
that Synapse can fail to handle device list update EDUs after a restart
when a partial state join is in progress.
Add the `device_list_remote_pending` table to the list of tables to
consider when initializing the `_device_list_id_gen` stream id generator.
Signed-off-by: Sean Quah <seanq@matrix.org>
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For better type safety we use an enum instead of strings to
configure direction (backwards or forwards).
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* FIx-up type hints in tests.logging.
* Add missing type hints to test_transactions.
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The `/relations` endpoint was not properly handle "live tokens"
(i.e sync tokens), to do this properly we abstract the code that
`/messages` has and re-use it.
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Due to the increased safety of StrCollection over Collection[str]
and Sequence[str].
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Destination was being used incorrectly (a single destination instead
of a list of destinations was being passed).
This also updates some of the types in the area to not use Collection[str],
which is a footgun.
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* Bump the client-side timeout for /state
to allow faster joins resyncs the chance to complete for large rooms.
We have seen this fair poorly (~90s for Matrix HQ's /state) in testing,
causing the resync to advance to another HS who hasn't seen our join yet.
* Changelog
* Milliseconds!!!!
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#13873 introduced a regression which causes sqlite database migrations
to no longer run inside a transaction. Wrap them in a transaction again,
to avoid database corruption when migrations are interrupted.
Fixes #14909.
Signed-off-by: Sean Quah <seanq@matrix.org>
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* Request partial joins by default
This is a little sloppy, but we are trying to gain confidence in faster
joins in the upcoming RC.
Admins can still opt out by adding the following to their Synapse
config:
```yaml
experimental:
faster_joins: false
```
We may revert this change before the release proper, depending on how
testing in the wild goes.
* Changelog
* Try to fix the backfill test failures
* Upgrade notes
* Postgres compat?
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(#14870)
* Allow `AbstractSet` in `StrCollection`
Or else frozensets are excluded. This will be useful in an upcoming
commit where I plan to change a function that accepts `List[str]` to
accept `StrCollection` instead.
* `rooms_to_exclude` -> `rooms_to_exclude_globally`
I am about to make use of this exclusion mechanism to exclude rooms for
a specific user and a specific sync. This rename helps to clarify the
distinction between the global config and the rooms to exclude for a
specific sync.
* Better function names for internal sync methods
* Track a list of excluded rooms on SyncResultBuilder
I plan to feed a list of partially stated rooms for this sync to ignore
* Exclude partial state rooms during eager sync
using the mechanism established in the previous commit
* Track un-partial-state stream in sync tokens
So that we can work out which rooms have become fully-stated during a
given sync period.
* Fix mutation of `@cached` return value
This was fouling up a complement test added alongside this PR.
Excluding a room would mean the set of forgotten rooms in the cache
would be extended. This means that room could be erroneously considered
forgotten in the future.
Introduced in #12310, Synapse 1.57.0. I don't think this had any
user-visible side effects (until now).
* SyncResultBuilder: track rooms to force as newly joined
Similar plan as before. We've omitted rooms from certain sync responses;
now we establish the mechanism to reintroduce them into future syncs.
* Read new field, to present rooms as newly joined
* Force un-partial-stated rooms to be newly-joined
for eager incremental syncs only, provided they're still fully stated
* Notify user stream listeners to wake up long polling syncs
* Changelog
* Typo fix
Co-authored-by: Sean Quah <8349537+squahtx@users.noreply.github.com>
* Unnecessary list cast
Co-authored-by: Sean Quah <8349537+squahtx@users.noreply.github.com>
* Rephrase comment
Co-authored-by: Sean Quah <8349537+squahtx@users.noreply.github.com>
* Another comment
Co-authored-by: Sean Quah <8349537+squahtx@users.noreply.github.com>
* Fixup merge(?)
* Poke notifier when receiving un-partial-stated msg over replication
* Fixup merge whoops
Thanks MV :)
Co-authored-by: Mathieu Velen <mathieuv@matrix.org>
Co-authored-by: Mathieu Velten <mathieuv@matrix.org>
Co-authored-by: Sean Quah <8349537+squahtx@users.noreply.github.com>
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* Skip processing stats for broken rooms.
* Newsfragment
* Use a custom exception.
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finishing join (#14874)
* Faster joins: Update room stats and user directory on workers when done
When finishing a partial state join to a room, we update the current
state of the room without persisting additional events. Workers receive
notice of the current state update over replication, but neglect to wake
the room stats and user directory updaters, which then get incidentally
triggered the next time an event is persisted or an unrelated event
persister sends out a stream position update.
We wake the room stats and user directory updaters at the appropriate
time in this commit.
Part of #12814 and #12815.
Signed-off-by: Sean Quah <seanq@matrix.org>
* fixup comment
Signed-off-by: Sean Quah <seanq@matrix.org>
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* Enable Complement tests for Faster Remote Room Joins on worker-mode
* (dangerous) Add an override to allow Complement to use FRRJ under workers
* Newsfile
Signed-off-by: Olivier Wilkinson (reivilibre) <oliverw@matrix.org>
* Fix race where we didn't send out replication notification
* MORE HACKS
* Fix get_un_partial_stated_rooms_token to take instance_name
* Fix bad merge
* Remove warning
* Correctly advance un_partial_stated_room_stream
* Fix merge
* Add another notify_replication
* Fixups
* Create a separate ReplicationNotifier
* Fix test
* Fix portdb
* Create a separate ReplicationNotifier
* Fix test
* Fix portdb
* Fix presence test
* Newsfile
* Apply suggestions from code review
* Update changelog.d/14752.misc
Co-authored-by: Erik Johnston <erik@matrix.org>
* lint
Signed-off-by: Olivier Wilkinson (reivilibre) <oliverw@matrix.org>
Co-authored-by: Erik Johnston <erik@matrix.org>
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* Avoid clearing out forward extremities when doing a second remote join
When joining a restricted room where the local homeserver does not have
a user able to issue invites, we perform a second remote join. We want
to avoid clearing out forward extremities in this case because the
forward extremities we have are up to date and clearing out forward
extremities creates a window in which the room can get bricked if
Synapse crashes.
Signed-off-by: Sean Quah <seanq@matrix.org>
* Do a full join when doing a second remote join into a full state room
We cannot persist a partial state join event into a joined full state
room, so we perform a full state join for such rooms instead. As a
future optimization, we could always perform a partial state join and
compute or retrieve the full state ourselves if necessary.
Signed-off-by: Sean Quah <seanq@matrix.org>
* Add lock around partial state flag for rooms
Signed-off-by: Sean Quah <seanq@matrix.org>
* Preserve partial state info when doing a second partial state join
Signed-off-by: Sean Quah <seanq@matrix.org>
* Add newsfile
* Add a TODO(faster_joins) marker
Signed-off-by: Sean Quah <seanq@matrix.org>
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Now that we wait for stream positions whenever we do a HTTP replication
hit, we need to be less brutal in the case where we do timeout (as we
have bugs around this).
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This ensures that all other workers are told about stream updates in a timely manner, without having to remember to manually poke replication.
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Currently, we will try to start a new partial state sync every time we
perform a remote join, which is undesirable if there is already one
running for a given room.
We intend to perform remote joins whenever additional local users wish
to join a partial state room, so let's ensure that we do not start more
than one concurrent partial state sync for any given room.
------------------------------------------------------------------------
There is a race condition where the homeserver leaves a room and later
rejoins while the partial state sync from the previous membership is
still running. There is no guarantee that the previous partial state
sync will process the latest join, so we restart it if needed.
Signed-off-by: Sean Quah <seanq@matrix.org>
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This caused some requests to fail.
This caused some requests to fail.
This really only started causing issues due to #14856
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This should hopefully mitigate a class of races where data gets out of
sync due a HTTP replication request racing with the replication streams.
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* Change Documentation to have v10 as default room version
* Change Default Room version to 10
* Add changelog entry for default room version swap
* Add changelog entry for v10 default room version in docs
* Clarify doc changelog entry
Co-authored-by: David Robertson <david.m.robertson1@gmail.com>
* Improve Documentation changes.
Co-authored-by: David Robertson <david.m.robertson1@gmail.com>
* Update Changelog entry to have correct format
Co-authored-by: David Robertson <david.m.robertson1@gmail.com>
* Update Spec Version to 1.5
* Only need 1 changelog.
* Fix test.
* Update "Changed in" line
Co-authored-by: David Robertson <david.m.robertson1@gmail.com>
Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>
Co-authored-by: Patrick Cloke <patrickc@matrix.org>
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Check for for an instance of a mapping instead of a dict.
This only affects room version 10 when frozen events are enabled.
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Serving partial join responses is no longer experimental. They will only be served under the stable identifier if the the undocumented config flag experimental.msc3706_enabled is set to true.
Synapse continues to request a partial join only if the undocumented config flag experimental.faster_joins is set to true; this setting remains present and unaffected.
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We were incorrectly checking if the *local* token had been advanced, rather than the token for the remote instance.
In practice, I don't think this has caused any bugs due to where we use `wait_for_stream_position`, as critically we don't use it on instances that also write to the given streams (and so the local token will lag behind all remote tokens).
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When the local homeserver is already joined to a room and wants to
perform another remote join, we may find it useful to do a non-partial
state join if we already have the full state for the room.
Signed-off-by: Sean Quah <seanq@matrix.org>
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This stops us from incrementing the presence stream position for no-op updates.
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Fix up #14812 to avoid introducing a reference to the reactor.
Signed-off-by: Sean Quah <seanq@matrix.org>
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* Also use stable name in SendJoinResponse struct
follow-up to #14832
* Changelog
* Fix a rename I missed
* Run black
* Update synapse/federation/federation_client.py
Co-authored-by: Sean Quah <8349537+squahtx@users.noreply.github.com>
Co-authored-by: Sean Quah <8349537+squahtx@users.noreply.github.com>
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* Use new query param when requesting a partial join
* Read new query param when serving partial join
* Provide new field names when serving partial joins
* Read new field names from partial join response
* Changelog
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for readability (#14804)
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When there are many synchronous requests waiting on a
`_PerHostRatelimiter`, each request will be started recursively just
after the previous request has completed. Under the right conditions,
this leads to stack exhaustion.
A common way for requests to become synchronous is when the remote
client disconnects early, because the homeserver is overloaded and slow
to respond.
Avoid stack exhaustion under these conditions by deferring subsequent
requests until the next reactor tick.
Fixes #14480.
Signed-off-by: Sean Quah <seanq@matrix.org>
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Fixes #14814
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Back-out some changes from 7e582a25f8f350df29d7d83ca902bdb522d1bbaf
(#14786) which skipped necessary logic to calculate device lists properly.
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* Re-enable some linting
* Newsfile
* Remove comment
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