Matrix-Mirrors/anonymousland-synapse
1
0
Fork 0
mirror of https://git.anonymousland.org/anonymousland/synapse.git synced 2025-05-02 11:16:07 -04:00
Code Issues Projects Releases Packages Wiki Activity

Add ability to wait for replication streams (#7542)

Browse source 
The idea here is that if an instance persists an event via the replication HTTP API it can return before we receive that event over replication, which can lead to races where code assumes that persisting an event immediately updates various caches (e.g. current state of the room).

Most of Synapse doesn't hit such races, so we don't do the waiting automagically, instead we do so where necessary to avoid unnecessary delays. We may decide to change our minds here if it turns out there are a lot of subtle races going on.

People probably want to look at this commit by commit.
This commit is contained in:
Erik Johnston 2020-05-22 14:21:54 +01:00 • committed by GitHub
parent 06a02bc1ce
commit 1531b214fc
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
24 changed files with 304 additions and 112 deletions
Download patch file Download diff file Expand all files Collapse all files

13
synapse/replication/http/federation.py
View file

@ -29,7 +29,7 @@ logger = logging.getLogger(__name__)
class ReplicationFederationSendEventsRestServlet(ReplicationEndpoint):
"""Handles events newly received from federation, including persisting and
notifying.
notifying. Returns the maximum stream ID of the persisted events.
The API looks like:
@ -46,6 +46,13 @@ class ReplicationFederationSendEventsRestServlet(ReplicationEndpoint):
"context": { .. serialized event context .. },
}],
"backfilled": false
}
200 OK
{
"max_stream_id": 32443,
}
"""
NAME = "fed_send_events"
@ -115,11 +122,11 @@ class ReplicationFederationSendEventsRestServlet(ReplicationEndpoint):
logger.info("Got %d events from federation", len(event_and_contexts))
await self.federation_handler.persist_events_and_notify(
max_stream_id = await self.federation_handler.persist_events_and_notify(
event_and_contexts, backfilled
)
return 200, {}
return 200, {"max_stream_id": max_stream_id}
class ReplicationFederationSendEduRestServlet(ReplicationEndpoint):