* Fix outbound federaion with multiple event persisters.
We incorrectly notified federation senders that the minimum persisted
stream position had advanced when we got an `RDATA` from an event
persister.
Notifying of federation senders already correctly happens in the
notifier, so we just delete the offending line.
* Change some interfaces to use RoomStreamToken.
By enforcing use of `RoomStreamTokens` we make it less likely that
people pass in random ints that they got from somewhere random.
There's no need for it to be in the dict as well as the events table. Instead,
we store it in a separate attribute in the EventInternalMetadata object, and
populate that on load.
This means that we can rely on it being correctly populated for any event which
has been persited to the database.
==============================
In addition to the below, Synapse 1.20.0rc5 also includes the bug fix that was included in 1.19.3.
Features
--------
- Add flags to the `/versions` endpoint for whether new rooms default to using E2EE. ([\#8343](https://github.com/matrix-org/synapse/issues/8343))
Bugfixes
--------
- Fix rate limiting of federation `/send` requests. ([\#8342](https://github.com/matrix-org/synapse/issues/8342))
- Fix a longstanding bug where back pagination over federation could get stuck if it failed to handle a received event. ([\#8349](https://github.com/matrix-org/synapse/issues/8349))
Internal Changes
----------------
- Blacklist [MSC2753](https://github.com/matrix-org/matrix-doc/pull/2753) SyTests until it is implemented. ([\#8285](https://github.com/matrix-org/synapse/issues/8285))
-----BEGIN PGP SIGNATURE-----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=tT5/
-----END PGP SIGNATURE-----
Merge tag 'v1.20.0rc5' into develop
Synapse 1.20.0rc5 (2020-09-18)
==============================
In addition to the below, Synapse 1.20.0rc5 also includes the bug fix that was included in 1.19.3.
Features
--------
- Add flags to the `/versions` endpoint for whether new rooms default to using E2EE. ([\#8343](https://github.com/matrix-org/synapse/issues/8343))
Bugfixes
--------
- Fix rate limiting of federation `/send` requests. ([\#8342](https://github.com/matrix-org/synapse/issues/8342))
- Fix a longstanding bug where back pagination over federation could get stuck if it failed to handle a received event. ([\#8349](https://github.com/matrix-org/synapse/issues/8349))
Internal Changes
----------------
- Blacklist [MSC2753](https://github.com/matrix-org/matrix-doc/pull/2753) SyTests until it is implemented. ([\#8285](https://github.com/matrix-org/synapse/issues/8285))
Synapse 1.19.3 (2020-09-18)
===========================
Bugfixes
--------
- Partially mitigate bug where newly joined servers couldn't get past
events in a room when there is a malformed event.
([\#8350](https://github.com/matrix-org/synapse/issues/8350))
-----BEGIN PGP SIGNATURE-----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=a9VC
-----END PGP SIGNATURE-----
Merge tag 'v1.19.3' into release-v1.20.0
1.19.3
Synapse 1.19.3 (2020-09-18)
===========================
Bugfixes
--------
- Partially mitigate bug where newly joined servers couldn't get past
events in a room when there is a malformed event.
([\#8350](https://github.com/matrix-org/synapse/issues/8350))
Signed-off-by: Olivier Wilkinson (reivilibre) <olivier@librepush.net>
Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>
* Fix _set_destination_retry_timings
This came about because the code assumed that retry_interval
could not be NULL — which has been challenged by catch-up.
This is a bit of a hack, as `_check_sigs_and_hash_and_fetch` is intended
for attempting to pull an event from the database/(re)pull it from the
server that originally sent the event if checking the signature of the
event fails.
During backfill we *know* that we won't have the event in our database,
however it is still useful to be able to query the original sending
server as the server we're backfilling from may be acting maliciously.
The main benefit and reason for this change however is that
`_check_sigs_and_hash_and_fetch` will drop an event during backfill if
it cannot be successfully validated, whereas the current code will
simply fail the backfill request - resulting in the client's /messages
request silently being dropped.
This is a quick patch to fix backfilling rooms that contain malformed
events. A better implementation in planned in future.
If we send out an event which refers to `prev_events` which other servers in
the federation are missing, then (after a round or two of backfill attempts),
they will end up asking us for `/state_ids` at a particular point in the DAG.
As per https://github.com/matrix-org/synapse/issues/7893, this is quite
expensive, and we tend to see lots of very similar requests around the same
time.
We can therefore handle this much more efficiently by using a cache, which (a)
ensures that if we see the same request from multiple servers (or even the same
server, multiple times), then they share the result, and (b) any other servers
that miss the initial excitement can also benefit from the work.
[It's interesting to note that `/state` has a cache for exactly this
reason. `/state` is now essentially unused and replaced with `/state_ids`, but
evidently when we replaced it we forgot to add a cache to the new endpoint.]
For inbound federation requests, if a given remote server makes too many
requests at once, we start stacking them up rather than processing them
immediatedly.
However, that means that there is a fair chance that the requesting server will
disconnect before we start processing the request. In that case, if it was a
read-only request (ie, a GET request), there is absolutely no point in
building a response (and some requests are quite expensive to handle).
Even in the case of a POST request, one of two things will happen:
* Most likely, the requesting server will retry the request and we'll get the
information anyway.
* Even if it doesn't, the requesting server has to assume that we didn't get
the memo, and act accordingly.
In short, we're better off aborting the request at this point rather than
ploughing on with what might be a quite expensive request.
It was correct at the time of our friend Jorik writing it (checking
git blame), but the world has moved now and it is no longer a
generator.
Signed-off-by: Olivier Wilkinson (reivilibre) <olivier@librepush.net>
Add changelog
Save retrieved keys to the db
lint
Fix and de-brittle remote result dict processing
Use query_user_devices instead, assume only master, self_signing key types
Make changelog more useful
Remove very specific exception handling
Wrap get_verify_key_from_cross_signing_key in a try/except
Note that _get_e2e_cross_signing_verify_key can raise a SynapseError
lint
Add comment explaining why this is useful
Only fetch master and self_signing key types
Fix log statements, docstrings
Remove extraneous items from remote query try/except
lint
Factor key retrieval out into a separate function
Send device updates, modeled after SigningKeyEduUpdater._handle_signing_key_updates
Update method docstring
This changes the replication protocol so that the server does not send down `RDATA` for rows that happened before the client connected. Instead, the server will send a `POSITION` and clients then query the database (or master out of band) to get up to date.
* Pull Sentinel out of LoggingContext
... and drop a few unnecessary references to it
* Factor out LoggingContext.current_context
move `current_context` and `set_context` out to top-level functions.
Mostly this means that I can more easily trace what's actually referring to
LoggingContext, but I think it's generally neater.
* move copy-to-parent into `stop`
this really just makes `start` and `stop` more symetric. It also means that it
behaves correctly if you manually `set_log_context` rather than using the
context manager.
* Replace `LoggingContext.alive` with `finished`
Turn `alive` into `finished` and make it a bit better defined.
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>
I messed this up a bit in #6805, but fortunately we weren't actually doing
anything with the room_version so it didn't matter that it was a str not a RoomVersion.
We were sending device updates down both the federation stream and
device streams. This mean there was a race if the federation sender
worker processed the federation stream first, as when the sender checked
if there were new device updates the slaved ID generator hadn't been
updated with the new stream IDs and so returned nothing.
This situation is correctly handled by events/receipts/etc by not
sending updates down the federation stream and instead having the
federation sender worker listen on the other streams and poke the
transaction queues as appropriate.
* Port synapse.replication.tcp to async/await
* Newsfile
* Correctly document type of on_<FOO> functions as async
* Don't be overenthusiastic with the asyncing....
* Fix /federation/v1/state for recent room versions
Turns out this endpoint was completely broken for v3 rooms. Hopefully this
re-signing code is irrelevant nowadays anyway.
Erik Johnston