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Add a Synapse Module for configuring presence update routing (#9491)

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At the moment, if you'd like to share presence between local or remote users, those users must be sharing a room together. This isn't always the most convenient or useful situation though.

This PR adds a module to Synapse that will allow deployments to set up extra logic on where presence updates should be routed. The module must implement two methods, `get_users_for_states` and `get_interested_users`. These methods are given presence updates or user IDs and must return information that Synapse will use to grant passing presence updates around.

A method is additionally added to `ModuleApi` which allows triggering a set of users to receive the current, online presence information for all users they are considered interested in. This is the equivalent of that user receiving presence information during an initial sync. 

The goal of this module is to be fairly generic and useful for a variety of applications, with hard requirements being:

* Sending state for a specific set or all known users to a defined set of local and remote users.
* The ability to trigger an initial sync for specific users, so they receive all current state.
This commit is contained in:
Andrew Morgan 2021-04-06 14:38:30 +01:00 • committed by GitHub
parent 44bb881096
commit 04819239ba
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14 changed files with 1283 additions and 65 deletions
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5
synapse/server.py
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@ -51,6 +51,7 @@ from synapse.crypto import context_factory
from synapse.crypto.context_factory import RegularPolicyForHTTPS
from synapse.crypto.keyring import Keyring
from synapse.events.builder import EventBuilderFactory
from synapse.events.presence_router import PresenceRouter
from synapse.events.spamcheck import SpamChecker
from synapse.events.third_party_rules import ThirdPartyEventRules
from synapse.events.utils import EventClientSerializer
@ -425,6 +426,10 @@ class HomeServer(metaclass=abc.ABCMeta):
else:
raise Exception("Workers cannot write typing")
@cache_in_self
def get_presence_router(self) -> PresenceRouter:
return PresenceRouter(self)
@cache_in_self
def get_typing_handler(self) -> FollowerTypingHandler:
if self.config.worker.writers.typing == self.get_instance_name():