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Quentin Gliech 4af33015af Fix joining remote rooms when a `on_new_event` callback is registered (#16973) ... Since Synapse 1.76.0, any module which registers a `on_new_event` callback would brick the ability to join remote rooms. This is because this callback tried to get the full state of the room, which would end up in a deadlock. Related: https://github.com/matrix-org/synapse-auto-accept-invite/issues/18 The following module would brick the ability to join remote rooms: ```python from typing import Any, Dict, Literal, Union import logging from synapse.module_api import ModuleApi, EventBase logger = logging.getLogger(__name__) class MyModule: def __init__(self, config: None, api: ModuleApi): self._api = api self._config = config self._api.register_third_party_rules_callbacks( on_new_event=self.on_new_event, ) async def on_new_event(self, event: EventBase, _state_map: Any) -> None: logger.info(f"Received new event: {event}") @staticmethod def parse_config(_config: Dict[str, Any]) -> None: return None ``` This is technically a breaking change, as we are now passing partial state on the `on_new_event` callback. However, this callback was broken for federated rooms since 1.76.0, and local rooms have full state anyway, so it's unlikely that it would change anything.		2 years ago
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account_data_callbacks.md	Add a module callback to react to account data changes (#12327)	4 years ago
account_validity_callbacks.md	ModuleAPI SSO auth callbacks (#15207)	2 years ago
add_extra_fields_to_client_events_unsigned.md	Add new module API for adding custom fields to events `unsigned` section (#16549)	2 years ago
background_update_controller_callbacks.md	Make background updates controllable via a plugin (#11306)	4 years ago
index.md	Document Synapse's behaviour when dealing with multiple modules (#11096)	4 years ago
password_auth_provider_callbacks.md	Consolidate logic to check for deactivated users. (#15634)	3 years ago
porting_legacy_module.md	Port the Password Auth Providers module interface to the new generic interface (#10548)	4 years ago
presence_router_callbacks.md	Clarify presence router docs. (#16529)	2 years ago
spam_checker_callbacks.md	Add login spam checker API (#15838)	3 years ago
third_party_rules_callbacks.md	Fix joining remote rooms when a `on_new_event` callback is registered (#16973)	2 years ago
writing_a_module.md	Fix typo	2 years ago