synapse-product/synapse
Richard van der Hoff 13683a3a22
Extend StreamChangeCache to support multiple entities per stream ID (#7303)
First some background: StreamChangeCache is used to keep track of what "entities" have 
changed since a given stream ID. So for example, we might use it to keep track of when the last
to-device message for a given user was received [1], and hence whether we need to pull any to-device messages from the database on a sync [2].

Now, it turns out that StreamChangeCache didn't support more than one thing being changed at
a given stream_id (this was part of the problem with #7206). However, it's entirely valid to send
to-device messages to more than one user at a time.

As it turns out, this did in fact work, because *some* methods of StreamChangeCache coped
ok with having multiple things changing on the same stream ID, and it seems we never actually
use the methods which don't work on the stream change caches where we allow multiple
changes at the same stream ID. But that feels horribly fragile, hence: let's update
StreamChangeCache to properly support this, and add some typing and some more tests while
we're at it.

[1]: https://github.com/matrix-org/synapse/blob/release-v1.12.3/synapse/storage/data_stores/main/deviceinbox.py#L301
[2]: https://github.com/matrix-org/synapse/blob/release-v1.12.3/synapse/storage/data_stores/main/deviceinbox.py#L47-L51
2020-04-22 13:45:40 +01:00
..
_scripts Replace instance variations of homeserver with correct case/spacing 2019-11-12 13:08:12 +00:00
api Convert http.HTTPStatus objects to their int equivalent (#7188) 2020-04-03 14:26:07 +01:00
app Merge branch 'release-v1.12.4' into develop 2020-04-22 13:09:23 +01:00
appservice Clean up newline quote marks around the codebase (#6362) 2019-11-21 12:00:14 +00:00
config Add ability to run replication protocol over redis. (#7040) 2020-04-22 13:07:41 +01:00
crypto Clean up some LoggingContext stuff (#7120) 2020-03-24 14:45:33 +00:00
events Remove special auth and redaction rules for aliases events in experimental room ver. (#7037) 2020-03-09 08:58:25 -04:00
federation Merge branch 'release-v1.12.4' into develop 2020-04-22 13:09:23 +01:00
groups Clarify list/set/dict/tuple comprehensions and enforce via flake8 (#6957) 2020-02-21 07:15:07 -05:00
handlers Merge branch 'release-v1.12.4' into develop 2020-04-22 13:09:23 +01:00
http Reduce federation logging on success (#7321) 2020-04-22 11:18:18 +01:00
logging Reduce the number of calls to resource.getrusage (#7183) 2020-04-03 13:21:30 +01:00
metrics Add prometheus metrics for the number of active pushers (#7103) 2020-03-19 10:00:24 +00:00
module_api Convert auth handler to async/await (#7261) 2020-04-15 12:40:18 -04:00
push Do not treat display names as globs for push rules. (#7271) 2020-04-22 13:07:12 +01:00
replication Add ability to run replication protocol over redis. (#7040) 2020-04-22 13:07:41 +01:00
res/templates Use a template for the SSO success page to allow for customization. (#7279) 2020-04-17 13:34:55 -04:00
rest Extend room admin api with additional attributes (#7225) 2020-04-22 13:38:41 +01:00
server_notices Server notices: Dissociate room creation/lookup from invite (#7199) 2020-04-04 17:27:45 +02:00
spam_checker_api Add type hints to the spam check module (#6915) 2020-02-14 12:49:40 -05:00
state Improve get auth chain difference algorithm. (#7095) 2020-03-18 16:46:41 +00:00
static Make it clearer to the user that they haven't overridden onLogin/Register (#7237) 2020-04-09 12:38:38 +01:00
storage Extend room admin api with additional attributes (#7225) 2020-04-22 13:38:41 +01:00
streams Bump version of mypy 2019-12-12 15:21:12 +00:00
util Extend StreamChangeCache to support multiple entities per stream ID (#7303) 2020-04-22 13:45:40 +01:00
__init__.py 1.12.3 2020-04-03 10:57:07 +01:00
event_auth.py Remove special auth and redaction rules for aliases events in experimental room ver. (#7037) 2020-03-09 08:58:25 -04:00
notifier.py Wake up transaction queue when remote server comes back online (#6706) 2020-01-17 10:27:19 +00:00
python_dependencies.py Add ability to run replication protocol over redis. (#7040) 2020-04-22 13:07:41 +01:00
secrets.py Run Black. (#5482) 2019-06-20 19:32:02 +10:00
server.py Move client command handling out of TCP protocol (#7185) 2020-04-06 09:58:42 +01:00
server.pyi Move client command handling out of TCP protocol (#7185) 2020-04-06 09:58:42 +01:00
types.py Validate the alt_aliases property of canonical alias events (#6971) 2020-03-03 07:12:45 -05:00
visibility.py Refactor a bit 2020-03-11 18:49:41 +00:00