* Increase DB/CPU perf of `_is_server_still_joined` check.
For rooms with large amount of state a single user leaving could cause
us to go and load a lot of membership events and then pull out
membership state in a large number of batches.
* Newsfile
* Update synapse/storage/persist_events.py
Co-Authored-By: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
* Fix adding if too soon
* Update docstring
* Review comments
* Woops typo
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
A lot of the things we log at INFO are now a bit superfluous, so lets
make them DEBUG logs to reduce the amount we log by default.
Co-Authored-By: Brendan Abolivier <babolivier@matrix.org>
Co-authored-by: Brendan Abolivier <github@brendanabolivier.com>
==============================
Bugfixes
--------
- Fix an issue with cross-signing where device signatures were not sent to remote servers. ([\#6844](https://github.com/matrix-org/synapse/issues/6844))
- Fix to the unknown remote device detection which was introduced in 1.10.rc1. ([\#6848](https://github.com/matrix-org/synapse/issues/6848))
Internal Changes
----------------
- Detect unexpected sender keys on remote encrypted events and resync device lists. ([\#6850](https://github.com/matrix-org/synapse/issues/6850))
-----BEGIN PGP SIGNATURE-----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=kcSy
-----END PGP SIGNATURE-----
Merge tag 'v1.10.0rc2' into develop
Synapse 1.10.0rc2 (2020-02-06)
==============================
Bugfixes
--------
- Fix an issue with cross-signing where device signatures were not sent to remote servers. ([\#6844](https://github.com/matrix-org/synapse/issues/6844))
- Fix to the unknown remote device detection which was introduced in 1.10.rc1. ([\#6848](https://github.com/matrix-org/synapse/issues/6848))
Internal Changes
----------------
- Detect unexpected sender keys on remote encrypted events and resync device lists. ([\#6850](https://github.com/matrix-org/synapse/issues/6850))
We were looking at the wrong event type (`m.room.encryption` vs
`m.room.encrypted`).
Also fixup the duplicate `EvenTypes` entries.
Introduced in #6776.
When a server leaves a room it may stop sharing a room with remote
users, and thus not get any updates to their device lists. So we need to
check for this case and delete those device lists from the cache.
We don't need to do this if we stop sharing a room because the remote
user leaves the room, because we track that case via looking at
membership changes.
If we detect that the remote users' keys may have changed then we should
attempt to resync against the remote server rather than using the
(potentially) stale local cache.
Otherwise its just stale data, which may get deleted later anyway so
can't be relied on. It's also a bit of a shotgun if we're trying to get
the current state of a room we're not in.
There are quite a few places that we assume that a redaction event has a
corresponding `redacts` key, which is not always the case. So lets
cheekily make it so that event.redacts just returns None instead.
When figuring out which topological token to start a purge job at, we
need to do the following:
1. Figure out a timestamp before which events will be purged
2. Select the first stream ordering after that timestamp
3. Select info about the first event after that stream ordering
4. Build a topological token from that info
In some situations (e.g. quiet rooms with a short max_lifetime), there
might not be an event after the stream ordering at step 3, therefore we
abort the purge with the error `No event found`. To mitigate that, this
patch fetches the first event _before_ the stream ordering, instead of
after.
Currently we rely on `current_state_events` to figure out what rooms a
user was in and their last membership event in there. However, if the
server leaves the room then the table may be cleaned up and that
information is lost. So lets add a table that separately holds that
information.
Dirk Klimpel