Commit Graph

757 Commits

Author SHA1 Message Date
Sean Quah
906cead9ca
Update docstrings to explain the impact of partial state (#13750)
Update the docstrings for `get_users_in_room` and
`get_current_hosts_in_room` to explain the impact of partial state.

Signed-off-by: Sean Quah <seanq@matrix.org>
2022-09-08 15:55:29 +01:00
Sean Quah
89e8b98b65
Avoid raising errors due to malformed IDs in get_current_hosts_in_room (#13748)
Handle malformed user IDs with no colons in `get_current_hosts_in_room`.
It's not currently possible for a malformed user ID to join a room, so
this error would never be hit.

Signed-off-by: Sean Quah <seanq@matrix.org>
2022-09-08 15:55:03 +01:00
Eric Eastwood
d4d3249ded
Instrument get_metadata_for_events for tracing (#13730)
When backfilling, `_get_state_ids_after_missing_prev_event` calls [`get_metadata_for_events`](26bc26586b/synapse/handlers/federation_event.py (L1133)). For `#matrix:matrix.org`, it's called with 77k `state_events` which means 77 calls to the database and takes 28 seconds.
2022-09-07 11:41:52 -05:00
reivilibre
d3d9ca156e
Cancel the processing of key query requests when they time out. (#13680) 2022-09-07 12:03:32 +01:00
reivilibre
c2fe48a6ff
Rename the EventFormatVersions enum values so that they line up with room version numbers. (#13706) 2022-09-07 11:08:20 +01:00
Erik Johnston
9d2823ab70
Cache is_partial_state_room (#13693)
Fixes #13613.
2022-09-01 16:07:01 +01:00
Šimon Brandner
0e99f07952
Remove support for unstable private read receipts (#13653)
Signed-off-by: Šimon Brandner <simon.bra.ag@gmail.com>
2022-09-01 13:31:54 +01:00
Nick Mills-Barrett
42b11d5565
Remove cached wrap on _get_joined_users_from_context method (#13569)
The method doesn't actually do any data fetching and the method that
does, `_get_joined_profile_from_event_id`, has its own cache.

Signed off by Nick @ Beeper (@Fizzadar).
2022-08-31 12:19:39 +01:00
David Robertson
a160406d24
Fix admin List Room API return type on sqlite (#13509) 2022-08-31 10:38:16 +00:00
Eric Eastwood
92c5817e34
Give the correct next event when the message timestamps are the same - MSC3030 (#13658)
Discovered while working on https://github.com/matrix-org/synapse/pull/13589 and I had all the messages at the same timestamp in the tests.

Part of https://github.com/matrix-org/matrix-spec-proposals/pull/3030

Complement tests: https://github.com/matrix-org/complement/pull/457
2022-08-30 14:50:06 -05:00
Patrick Cloke
20df96a7a7
Speed up inserting event_push_actions_staging. (#13634)
By using `execute_values` instead of `execute_batch`.
2022-08-30 07:12:48 -04:00
Eric Eastwood
51d732db3b
Optimize how we calculate likely_domains during backfill (#13575)
Optimize how we calculate `likely_domains` during backfill because I've seen this take 17s in production just to `get_current_state` which is used to `get_domains_from_state` (see case [*2. Loading tons of events* in the `/messages` investigation issue](https://github.com/matrix-org/synapse/issues/13356)).

There are 3 ways we currently calculate hosts that are in the room:

 1. `get_current_state` -> `get_domains_from_state`
    - Used in `backfill` to calculate `likely_domains` and `/timestamp_to_event` because it was cargo-culted from `backfill`
    - This one is being eliminated in favor of `get_current_hosts_in_room` in this PR 🕳
 1. `get_current_hosts_in_room`
    - Used for other federation things like sending read receipts and typing indicators
 1. `get_hosts_in_room_at_events`
    - Used when pushing out events over federation to other servers in the `_process_event_queue_loop`

Fix https://github.com/matrix-org/synapse/issues/13626

Part of https://github.com/matrix-org/synapse/issues/13356

Mentioned in [internal doc](https://docs.google.com/document/d/1lvUoVfYUiy6UaHB6Rb4HicjaJAU40-APue9Q4vzuW3c/edit#bookmark=id.2tvwz3yhcafh)


### Query performance

#### Before

The query from `get_current_state` sucks just because we have to get all 80k events. And we see almost the exact same performance locally trying to get all of these events (16s vs 17s):
```
synapse=# SELECT type, state_key, event_id FROM current_state_events WHERE room_id = '!OGEhHVWSdvArJzumhm:matrix.org';
Time: 16035.612 ms (00:16.036)

synapse=# SELECT type, state_key, event_id FROM current_state_events WHERE room_id = '!OGEhHVWSdvArJzumhm:matrix.org';
Time: 4243.237 ms (00:04.243)
```

But what about `get_current_hosts_in_room`: When there is 8M rows in the `current_state_events` table, the previous query in `get_current_hosts_in_room` took 13s from complete freshness (when the events were first added). But takes 930ms after a Postgres restart or 390ms if running back to back to back.

```sh
$ psql synapse
synapse=# \timing on
synapse=# SELECT COUNT(DISTINCT substring(state_key FROM '@[^:]*:(.*)$'))
FROM current_state_events
WHERE
    type = 'm.room.member'
    AND membership = 'join'
    AND room_id = '!OGEhHVWSdvArJzumhm:matrix.org';
 count
-------
  4130
(1 row)

Time: 13181.598 ms (00:13.182)

synapse=# SELECT COUNT(*) from current_state_events where room_id = '!OGEhHVWSdvArJzumhm:matrix.org';
 count
-------
 80814

synapse=# SELECT COUNT(*) from current_state_events;
  count
---------
 8162847

synapse=# SELECT pg_size_pretty( pg_total_relation_size('current_state_events') );
 pg_size_pretty
----------------
 4702 MB
```

#### After

I'm not sure how long it takes from complete freshness as I only really get that opportunity once (maybe restarting computer but that's cumbersome) and it's not really relevant to normal operating times. Maybe you get closer to the fresh times the more access variability there is so that Postgres caches aren't as exact. Update: The longest I've seen this run for is 6.4s and 4.5s after a computer restart.

After a Postgres restart, it takes 330ms and running back to back takes 260ms.

```sh
$ psql synapse
synapse=# \timing on
Timing is on.
synapse=# SELECT
    substring(c.state_key FROM '@[^:]*:(.*)$') as host
FROM current_state_events c
/* Get the depth of the event from the events table */
INNER JOIN events AS e USING (event_id)
WHERE
    c.type = 'm.room.member'
    AND c.membership = 'join'
    AND c.room_id = '!OGEhHVWSdvArJzumhm:matrix.org'
GROUP BY host
ORDER BY min(e.depth) ASC;
Time: 333.800 ms
```

#### Going further

To improve things further we could add a `limit` parameter to `get_current_hosts_in_room`. Realistically, we don't need 4k domains to choose from because there is no way we're going to query that many before we a) probably get an answer or b) we give up. 

Another thing we can do is optimize the query to use a index skip scan:

 - https://wiki.postgresql.org/wiki/Loose_indexscan
 - Index Skip Scan, https://commitfest.postgresql.org/37/1741/
 - https://www.timescale.com/blog/how-we-made-distinct-queries-up-to-8000x-faster-on-postgresql/
2022-08-30 01:38:14 -05:00
Eric Eastwood
d58615c82c
Directly lookup local membership instead of getting all members in a room first (get_users_in_room mis-use) (#13608)
See https://github.com/matrix-org/synapse/pull/13575#discussion_r953023755
2022-08-24 14:13:12 -05:00
Nick Mills-Barrett
b687010f89
Rewrite get push actions queries (#13597) 2022-08-24 10:12:51 +01:00
Erik Johnston
05c9c7363b
Fix regression caused by #13573 (#13600)
Broke in #13573.
2022-08-23 14:14:05 +00:00
Erik Johnston
aec87a0f93
Speed up fetching large numbers of push rules (#13592) 2022-08-23 13:15:43 +01:00
Nick Mills-Barrett
5e7847dc92
Cache user IDs instead of profile objects (#13573)
The profile objects are never used and increase cache size significantly.
2022-08-23 09:49:59 +00:00
Quentin Gliech
3dd175b628
synapse.api.auth.Auth cleanup: make permission-related methods use Requester instead of the UserID (#13024)
Part of #13019

This changes all the permission-related methods to rely on the Requester instead of the UserID. This is a first step towards enabling scoped access tokens at some point, since I expect the Requester to have scope-related informations in it.

It also changes methods which figure out the user/device/appservice out of the access token to return a Requester instead of something else. This avoids having store-related objects in the methods signatures.
2022-08-22 14:17:59 +01:00
reivilibre
8bdf2bd31e
Fix a bug in the /event_reports Admin API which meant that the total count could be larger than the number of results you can actually query for. (#13525)
Co-authored-by: Brendan Abolivier <babolivier@matrix.org>
2022-08-17 18:08:23 +00:00
Dirk Klimpel
d75512d19e
Add forgotten status to Room Details API (#13503) 2022-08-17 09:42:01 +00:00
Eric Eastwood
0a4efbc1dd
Instrument the federation/backfill part of /messages (#13489)
Instrument the federation/backfill part of `/messages` so it's easier to follow what's going on in Jaeger when viewing a trace.

Split out from https://github.com/matrix-org/synapse/pull/13440

Follow-up from https://github.com/matrix-org/synapse/pull/13368

Part of https://github.com/matrix-org/synapse/issues/13356
2022-08-16 12:39:40 -05:00
reivilibre
c3516e9dec
Faster room joins: make /joined_members block whilst the room is partial stated. (#13514) 2022-08-16 13:16:56 +01:00
Erik Johnston
5442891cbc
Make push rules use proper structures. (#13522)
This improves load times for push rules:

| Version              | Time per user | Time for 1k users | 
| -------------------- | ------------- | ----------------- |
| Before               |       138 µs  |             138ms |
| Now (with custom)    |       2.11 µs |            2.11ms |
| Now (without custom) |       49.7 ns |           0.05 ms |

This therefore has a large impact on send times for rooms
with large numbers of local users in the room.
2022-08-16 12:22:17 +01:00
Eric Eastwood
344a2f767c
Instrument FederationStateIdsServlet - /state_ids (#13499)
Instrument FederationStateIdsServlet - `/state_ids` so it's easier to follow what's going on in Jaeger when viewing a trace.
2022-08-15 19:41:23 +01:00
Patrick Cloke
46bd7f4ed9
Clarifications for event push action processing. (#13485)
* Clarifies comments.
* Fixes an erroneous comment (about return type) added in #13455
  (ec24813220).
* Clarifies the name of a variable.
* Simplifies logic of pulling out the latest join for the requesting user.
2022-08-15 09:33:17 -04:00
Richard van der Hoff
507c1cb330
Update the rejected state of events during resync (#13459)
Events can be un-rejected or newly-rejected during resync, so ensure we update
the database and caches when that happens.
2022-08-11 10:42:24 +00:00
Šimon Brandner
ab18441573
Support stable identifiers for MSC2285: private read receipts. (#13273)
This adds support for the stable identifiers of MSC2285 while
continuing to support the unstable identifiers behind the configuration
flag. These will be removed in a future version.
2022-08-05 11:09:33 -04:00
Erik Johnston
b6a6bb4027
Add comments about how event push actions are stored. (#13445) 2022-08-04 19:38:08 +00:00
Patrick Cloke
ec24813220
Improve comments (& avoid a duplicate query) in push actions processing. (#13455)
* Adds docstrings and inline comments.
* Formats SQL queries using triple quoted strings.
* Minor formatting changes.
* Avoid fetching `event_push_summary_stream_ordering` multiple times
  in the same transactions.
2022-08-04 19:24:44 +00:00
Richard van der Hoff
96d92156d0
Update type of EventContext.rejected (#13460) 2022-08-04 17:45:01 +01:00
Nick Mills-Barrett
41320a0554
Optimise async get event lookups (#13435)
Still maintains local in memory lookup optimisation, but does any external
lookup as part of the deferred that prevents duplicate lookups for the same
event at once. This makes the assumption that fetching from an external
cache is a non-zero load operation.
2022-08-04 15:49:55 +01:00
Eric Eastwood
92d21faf12
Instrument /messages for understandable traces in Jaeger (#13368)
In Jaeger:

 - Before: huge list of uncategorized database calls
 - After: nice and collapsible into units of work
2022-08-03 10:57:38 -05:00
Richard van der Hoff
23768ccb4d
Faster joins: fix rejected events becoming un-rejected during resync (#13413)
Make sure that we re-check the auth rules during state resync, otherwise
rejected events get un-rejected.
2022-08-01 11:20:05 +01:00
Šimon Brandner
583f22780f
Use stable prefixes for MSC3827: filtering of /publicRooms by room type (#13370)
Signed-off-by: Šimon Brandner <simon.bra.ag@gmail.com>
2022-07-27 19:46:57 +01:00
Richard van der Hoff
ca3db044a3
Fix infinite loop in partial-state resync (#13353)
Make sure that we only pull out events from the db once they have no
prev-events with partial state.
2022-07-26 11:47:31 +00:00
Patrick Cloke
8b603299bf
Remove unused argument for get_relations_for_event. (#13383) 2022-07-26 07:19:20 -04:00
Erik Johnston
43adf2521c
Refactor presence so we can prune user in room caches (#13313)
See #10826 and #10786 for context as to why we had to disable pruning on
those caches.

Now that `get_users_who_share_room_with_user` is called frequently only
for presence, we just need to make calls to it less frequent and then we
can remove the various levels of caching that is going on.
2022-07-25 09:21:06 +00:00
Erik Johnston
0b87eb8e0c
Make DictionaryCache have better expiry properties (#13292) 2022-07-21 17:13:44 +01:00
Patrick Cloke
50122754c8
Add missing types to opentracing. (#13345)
After this change `synapse.logging` is fully typed.
2022-07-21 12:01:52 +00:00
Nick Mills-Barrett
190f49d8ab
Use cache store remove base slaved (#13329)
This comes from two identical definitions in each of the base stores, and means the base slaved store is now empty and can be removed.
2022-07-21 11:51:30 +01:00
Eric Eastwood
0f971ca68e
Update get_pdu to return the original, pristine EventBase (#13320)
Update `get_pdu` to return the untouched, pristine `EventBase` as it was originally seen over federation (no metadata added). Previously, we returned the same `event` reference that we stored in the cache which downstream code modified in place and added metadata like setting it as an `outlier`  and essentially poisoned our cache. Now we always return a copy of the `event` so the original can stay pristine in our cache and re-used for the next cache call.

Split out from https://github.com/matrix-org/synapse/pull/13205

As discussed at:

 - https://github.com/matrix-org/synapse/pull/13205#discussion_r918365746
 - https://github.com/matrix-org/synapse/pull/13205#discussion_r918366125

Related to https://github.com/matrix-org/synapse/issues/12584. This PR doesn't fix that issue because it hits [`get_event` which exists from the local database before it tries to `get_pdu`](7864f33e28/synapse/federation/federation_client.py (L581-L594)).
2022-07-20 15:58:51 -05:00
Patrick Cloke
a6895dd576
Add type annotations to trace decorator. (#13328)
Functions that are decorated with `trace` are now properly typed
and the type hints for them are fixed.
2022-07-19 14:14:30 -04:00
Erik Johnston
de70b25e84
Reduce memory usage of state group cache (#13323) 2022-07-19 14:40:37 +01:00
David Robertson
b977867358
Rate limit joins per-room (#13276) 2022-07-19 11:45:17 +00:00
Nick Mills-Barrett
2ee0b6ef4b
Safe async event cache (#13308)
Fix race conditions in the async cache invalidation logic, by separating
the async & local invalidation calls and ensuring any async call i
executed first.

Signed off by Nick @ Beeper (@Fizzadar).
2022-07-19 11:25:29 +00:00
Shay
7864f33e28
Increase batch size of bulk_get_push_rules and _get_joined_profiles_from_event_ids. (#13300) 2022-07-18 13:15:23 -07:00
Shay
15edf23626
Improve performance of query _get_subset_users_in_room_with_profiles (#13299) 2022-07-18 12:35:45 -07:00
Erik Johnston
f721f1baba
Revert "Make all process_replication_rows methods async (#13304)" (#13312)
This reverts commit 5d4028f217.
2022-07-18 14:28:14 +01:00
Nick Mills-Barrett
6785b0f39d
Use READ COMMITTED isolation level when purging rooms (#12942)
To close: #10294.

Signed off by Nick @ Beeper.
2022-07-18 14:17:24 +01:00
Nick Mills-Barrett
5d4028f217
Make all process_replication_rows methods async (#13304)
More prep work for asyncronous caching, also makes all process_replication_rows methods consistent (presence handler already is so).

Signed off by Nick @ Beeper (@Fizzadar)
2022-07-17 22:19:43 +01:00