Commit Graph

29 Commits

Author SHA1 Message Date
David Robertson
06ba71083e
Fix order of partial state tables when purging (#15068)
* 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>
2023-02-14 23:42:29 +00:00
Eric Eastwood
44be42338e
Add support to purge rows from MSC2716 and other tables when purging a room (#13825)
`event_failed_pull_attempts` added in https://github.com/matrix-org/synapse/pull/13589

MSC2716 related tables added in:

 - https://github.com/matrix-org/synapse/pull/10245/files#diff-3d42dfb44d02f7de3aada105e0bdc1cc9dd7f953cbf0f36c5d0f50827bf0320aR1
    - Renamed in https://github.com/matrix-org/synapse/pull/10838/files#diff-2730bfbe9e688b55e46f9371aefe67dac2bd2b2b7d9d6b92774eea1fcfae156dR1
 - https://github.com/matrix-org/synapse/pull/10498/files#diff-c52bbfbb5921a3f6f023b24343668479d966fac164f13b7c39d2197ce3afa7a5R1
2022-09-16 10:56:56 -05:00
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
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
cc21a431f3
Async get event cache prep (#13242)
Some experimental prep work to enable external event caching based on #9379 & #12955. Doesn't actually move the cache at all, just lays the groundwork for async implemented caches.

Signed off by Nick @ Beeper (@Fizzadar)
2022-07-15 09:30:46 +00:00
Richard van der Hoff
75fb10ee45
Clean up schema for event_edges (#12893)
* Remove redundant references to `event_edges.room_id`

We don't need to care about the room_id here, because we are already checking
the event id.

* Clean up the event_edges table

We make a number of changes to `event_edges`:

 * We give the `room_id` and `is_state` columns defaults (null and false
   respectively) so that we can stop populating them.
 * We drop any rows that have `is_state` set true - they should no longer
   exist.
 * We drop any rows that do not exist in `events` - these should not exist
   either.
 * We drop the old unique constraint on all the colums, which wasn't much use.
 * We create a new unique index on `(event_id, prev_event_id)`.
 * We add a foreign key constraint to `events`.

These happen rather differently depending on whether we are on Postgres or
SQLite. For SQLite, we just rebuild the whole table, copying only the rows we
want to keep. For Postgres, we try to do things in the background as much as
possible.

* Stop populating `event_edges.room_id` and `is_state`

We can just rely on the defaults.
2022-06-15 12:29:42 +01:00
Patrick Cloke
f7baffd8ec
Remove remaining pieces of groups code. (#12966)
* Remove an unused stream ID generator.
* Remove the now unused remote profile cache.
2022-06-06 13:20:05 -04:00
Richard van der Hoff
f1605b7447
Fix room deletion (#12889)
* Fix room deletion

ae7858f broke room deletion by attempting to delete the entry from `rooms`
before the tables that reference it.

* faster_joins: remove database rows on purge
2022-05-27 10:31:08 +01:00
Mathieu Velten
182ca78a12
Delete events from federation_inbound_events_staging table on purge (#12770) 2022-05-17 17:01:06 +00:00
Richard van der Hoff
147f098fb4
Stop writing to event_reference_hashes (#12679)
This table is never read, since #11794. We stop writing to it; in future we can
drop it altogether.
2022-05-10 15:35:08 +01:00
Erik Johnston
ae7858f184
Fix race when persisting an event and deleting a room (#12594)
This works by taking a row level lock on the `rooms` table at the start of both transactions, ensuring that they don't run at the same time. In the event persistence transaction we also check that there is an entry still in the `rooms` table.

I can't figure out how to do this in SQLite. I was just going to lock the table, but it seems that we don't support that in SQLite either, so I'm *really* confused as to how we maintain integrity in SQLite when using `lock_table`....
2022-05-03 11:47:21 +01:00
Dirk Klimpel
7c82da27aa
Add type hints to synapse/storage/databases/main (#11984) 2022-02-21 16:03:06 +00:00
Richard van der Hoff
9f2016e96e
Drop unused table public_room_list_stream. (#11795)
This is a follow-up to #10565.
2022-01-21 09:19:56 +00:00
Richard van der Hoff
5640992d17
Disambiguate queries on state_key (#11497)
We're going to add a `state_key` column to the `events` table, so we need to
add some disambiguation to queries which use it.
2021-12-02 22:42:58 +00:00
Kokokokoka
e704cc2a48
In _purge_history_txn, ensure that txn.fetchall has elements before accessing rows (#10690)
This change adds a check for row existence before accessing row element, this should fix issue #10669
Signed-off-by: Vasya Boytsov vasiliy.boytsov@phystech.edu
2021-09-24 09:19:51 +00:00
Richard van der Hoff
96715d7633
Make backfill and get_missing_events use the same codepath (#10645)
Given that backfill and get_missing_events are basically the same thing, it's somewhat crazy that we have entirely separate code paths for them. This makes backfill use the existing get_missing_events code, and then clears up all the unused code.
2021-08-26 18:34:57 +01:00
Jonathan de Jong
bdfde6dca1
Use inline type hints in http/federation/, storage/ and util/ (#10381) 2021-07-15 12:46:54 -04:00
Andreas Rammhold
e3e73e181b
Upsert redactions in case they already exists (#10343)
* Upsert redactions in case they already exists

Occasionally, in combination with retention, redactions aren't deleted
from the database whenever they are due for deletion. The server will
eventually try to backfill the deleted events and trip over the already
existing redaction events.

Switching to an UPSERT for those events allows us to recover from there
situations. The retention code still needs fixing but that is outside of
my current comfort zone on this code base.

This is related to #8707 where the error was discussed already.

Signed-off-by: Andreas Rammhold <andreas@rammhold.de>

* Also purge redactions when purging events

Previously redacints where left behind leading to backfilling issues
when the server stumbled across the already existing yet to be
backfilled redactions.

This issues has been discussed in #8707.

Signed-off-by: Andreas Rammhold <andreas@rammhold.de>
2021-07-09 11:03:02 +01:00
Cristina
f6767abc05
Remove functionality associated with unused historical stats tables (#9721)
Fixes #9602
2021-07-08 16:57:13 +01:00
Richard van der Hoff
b4b2fd2ece
add a cache to have_seen_event (#9953)
Empirically, this helped my server considerably when handling gaps in Matrix HQ. The problem was that we would repeatedly call have_seen_events for the same set of (50K or so) auth_events, each of which would take many minutes to complete, even though it's only an index scan.
2021-06-01 12:04:47 +01:00
Jonathan de Jong
4b965c862d
Remove redundant "coding: utf-8" lines (#9786)
Part of #9744

Removes all redundant `# -*- coding: utf-8 -*-` lines from files, as python 3 automatically reads source code as utf-8 now.

`Signed-off-by: Jonathan de Jong <jonathan@automatia.nl>`
2021-04-14 15:34:27 +01:00
Patrick Cloke
dc51d8ffaf
Add a background task to purge unused chain IDs. (#9542)
This is a companion change to apply the fix in #9498 /
922788c604 to previously
purged rooms.
2021-03-09 11:22:25 -05:00
Patrick Cloke
922788c604
Purge chain cover tables when purging events. (#9498) 2021-03-03 11:04:08 -05:00
Erik Johnston
7a43482f19
Use execute_batch in more places (#9188)
* Use execute_batch in more places

* Newsfile
2021-01-21 14:44:12 +00:00
Richard van der Hoff
f8d13ca13d
Drop (almost) unused index on event_json (#8845) 2020-11-30 18:44:09 +00:00
Erik Johnston
7941372ec8
Make token serializing/deserializing async (#8427)
The idea is that in future tokens will encode a mapping of instance to position. However, we don't want to include the full instance name in the string representation, so instead we'll have a mapping between instance name and an immutable integer ID in the DB that we can use instead. We'll then do the lookup when we serialize/deserialize the token (we could alternatively pass around an `Instance` type that includes both the name and ID, but that turns out to be a lot more invasive).
2020-09-30 20:29:19 +01:00
reivilibre
58f61f10f7
Catch-up after Federation Outage (split, 1) (#8230)
Signed-off-by: Olivier Wilkinson (reivilibre) <olivier@librepush.net>
2020-09-04 12:22:23 +01:00
Patrick Cloke
54f8d73c00
Convert additional databases to async/await (#8199) 2020-09-01 09:21:48 -04:00
Erik Johnston
a7bdf98d01
Rename database classes to make some sense (#8033) 2020-08-05 21:38:57 +01:00