Fixes a bug where rejected events were persisted with the wrong state group.
Also fixes an occasional internal-server-error when receiving events over
federation which are rejected and (possibly because they are
backwards-extremities) have no prev_group.
Fixes#6289.
* Raise an exception if accessing state for rejected events
Add some sanity checks on accessing state_group etc for
rejected events.
* Skip calculating push actions for rejected events
It didn't actually cause any bugs, because rejected events get filtered out at
various later points, but there's not point in trying to calculate the push
actions for a rejected event.
When the `/keys/query` API is hit on client_reader worker Synapse may
decide that it needs to resync some remote deivces. Usually this happens
on master, and then gets cached. However, that fails on workers and so
it falls back to fetching devices from remotes directly, which may in
turn fail if the remote is down.
While the current version of the spec doesn't say much about how this endpoint uses filters (see https://github.com/matrix-org/matrix-doc/issues/2338), the current implementation is that some fields of an EventFilter apply (the ones that are used when running the SQL query) and others don't (the ones that are used by the filter itself) because we don't call event_filter.filter(...). This seems counter-intuitive and probably not what we want so this commit fixes it.
The intention here is to make it clearer which fields we can expect to be
populated when: notably, that the _event_type etc aren't used for the
synchronous impl of EventContext.
* Add lint dependencies black, flake8 and isort
These are required when running the `lint.sh` dev scripts.
Signed-off-by: Jason Robinson <jasonr@matrix.org>
* Add contributer docs for using the providers linters script
Add also to the pull request template to avoid build failures due
to people not knowing that linters need running.
Signed-off-by: Jason Robinson <jasonr@matrix.org>
* Fix mention of linter errors correction
Co-Authored-By: Andrew Morgan <1342360+anoadragon453@users.noreply.github.com>
* Add mention for installing linter dependencies
Co-Authored-By: Andrew Morgan <1342360+anoadragon453@users.noreply.github.com>
* Remove linters from python dependencies as per PR review
Signed-off-by: Jason Robinson <jasonr@matrix.org>
Richard van der Hoff