Commit Graph

18 Commits

Author SHA1 Message Date
Jonathan de Jong
05e8c70c05
Experimental Federation Speedup (#9702)
This basically speeds up federation by "squeezing" each individual dual database call (to destinations and destination_rooms), which previously happened per every event, into one call for an entire batch (100 max).

Signed-off-by: Jonathan de Jong <jonathan@automatia.nl>
2021-04-14 17:19:02 +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
Jonathan de Jong
0caf2a338e
Fix federation stall on concurrent access errors (#9639) 2021-03-23 13:52:30 +00:00
Erik Johnston
026503fa3b
Don't go into federation catch up mode so easily (#9561)
Federation catch up mode is very inefficient if the number of events
that the remote server has missed is small, since handling gaps can be
very expensive, c.f. #9492.

Instead of going into catch up mode whenever we see an error, we instead
do so only if we've backed off from trying the remote for more than an
hour (the assumption being that in such a case it is more than a
transient failure).
2021-03-15 14:42:40 +00:00
Eric Eastwood
0a00b7ff14
Update black, and run auto formatting over the codebase (#9381)
- Update black version to the latest
 - Run black auto formatting over the codebase
    - Run autoformatting according to [`docs/code_style.md
`](80d6dc9783/docs/code_style.md)
 - Update `code_style.md` docs around installing black to use the correct version
2021-02-16 22:32:34 +00:00
Patrick Cloke
7950aa8a27 Fix some typos. 2021-02-12 11:14:12 -05:00
Erik Johnston
631dd06f2c
Fix get destinations to catch up query. (#9114)
t was doing a sequential scan on `destination_rooms`, which took
minutes.
2021-01-14 16:47:21 +00:00
Erik Johnston
19b15d63e8
Use autocommit mode for single statement DB functions. (#8542)
Autocommit means that we don't wrap the functions in transactions, and instead get executed directly. Introduced in #8456. This will help:

1. reduce the number of `could not serialize access due to concurrent delete` errors that we see (though there are a few functions that often cause serialization errors that we don't fix here);
2. improve the DB performance, as it no longer needs to deal with the overhead of `REPEATABLE READ` isolation levels; and
3. improve wall clock speed of these functions, as we no longer need to send `BEGIN` and `COMMIT` to the DB.

Some notes about the differences between autocommit mode and our default `REPEATABLE READ` transactions:

1. Currently `autocommit` only applies when using PostgreSQL, and is ignored when using SQLite (due to silliness with [Twisted DB classes](https://twistedmatrix.com/trac/ticket/9998)).
2. Autocommit functions may get retried on error, which means they can get applied *twice* (or more) to the DB (since they are not in a transaction the previous call would not get rolled back). This means that the functions need to be idempotent (or otherwise not care about being called multiple times). Read queries, simple deletes, and updates/upserts that replace rows (rather than generating new values from existing rows) are all idempotent.
3. Autocommit functions no longer get executed in [`REPEATABLE READ`](https://www.postgresql.org/docs/current/transaction-iso.html) isolation level, and so data can change queries, which is fine for single statement queries.
2020-10-14 15:50:59 +01:00
Patrick Cloke
e4f72ddc44
Move additional tasks to the background worker (#8458) 2020-10-07 11:27:56 -04:00
reivilibre
36efbcaf51
Catch-up after Federation Outage (bonus): Catch-up on Synapse Startup (#8322)
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.
2020-09-18 14:59:13 +01:00
Patrick Cloke
8a4a4186de
Simplify super() calls to Python 3 syntax. (#8344)
This converts calls like super(Foo, self) -> super().

Generated with:

    sed -i "" -Ee 's/super\([^\(]+\)/super()/g' **/*.py
2020-09-18 09:56:44 -04:00
reivilibre
576bc37d31
Catch-up after Federation Outage (split, 4): catch-up loop (#8272) 2020-09-15 09:07:19 +01:00
reivilibre
17fa4c7ca7
Catch up after Federation Outage (split, 2): Track last successful stream ordering after transmission (#8247)
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
2020-09-04 15:06:51 +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
5c03134d0f
Convert additional database code to async/await. (#8195) 2020-08-28 07:54:27 -04:00
Patrick Cloke
9b7ac03af3
Convert calls of async database methods to async (#8166) 2020-08-27 13:38:41 -04:00
Patrick Cloke
a3a59bab7b
Convert appservice, group server, profile and more databases to async (#8066) 2020-08-12 09:28:48 -04:00
Erik Johnston
a7bdf98d01
Rename database classes to make some sense (#8033) 2020-08-05 21:38:57 +01:00