diff options
Diffstat (limited to 'synapse/handlers/appservice.py')
| -rw-r--r-- | synapse/handlers/appservice.py | 222 |
1 files changed, 186 insertions, 36 deletions
diff --git a/synapse/handlers/appservice.py b/synapse/handlers/appservice.py index 9d4e87dad6..5c6458eb52 100644 --- a/synapse/handlers/appservice.py +++ b/synapse/handlers/appservice.py @@ -12,8 +12,8 @@ # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. - import logging +from typing import TYPE_CHECKING, Dict, List, Optional, Union from prometheus_client import Counter @@ -21,21 +21,32 @@ from twisted.internet import defer import synapse from synapse.api.constants import EventTypes +from synapse.appservice import ApplicationService +from synapse.events import EventBase +from synapse.handlers.presence import format_user_presence_state from synapse.logging.context import make_deferred_yieldable, run_in_background from synapse.metrics import ( event_processing_loop_counter, event_processing_loop_room_count, ) -from synapse.metrics.background_process_metrics import run_as_background_process +from synapse.metrics.background_process_metrics import ( + run_as_background_process, + wrap_as_background_process, +) +from synapse.storage.databases.main.directory import RoomAliasMapping +from synapse.types import Collection, JsonDict, RoomAlias, RoomStreamToken, UserID from synapse.util.metrics import Measure +if TYPE_CHECKING: + from synapse.app.homeserver import HomeServer + logger = logging.getLogger(__name__) events_processed_counter = Counter("synapse_handlers_appservice_events_processed", "") class ApplicationServicesHandler: - def __init__(self, hs): + def __init__(self, hs: "HomeServer"): self.store = hs.get_datastore() self.is_mine_id = hs.is_mine_id self.appservice_api = hs.get_application_service_api() @@ -43,19 +54,22 @@ class ApplicationServicesHandler: self.started_scheduler = False self.clock = hs.get_clock() self.notify_appservices = hs.config.notify_appservices + self.event_sources = hs.get_event_sources() self.current_max = 0 self.is_processing = False - async def notify_interested_services(self, current_id): + def notify_interested_services(self, max_token: RoomStreamToken): """Notifies (pushes) all application services interested in this event. Pushing is done asynchronously, so this method won't block for any prolonged length of time. - - Args: - current_id(int): The current maximum ID. """ + # We just use the minimum stream ordering and ignore the vector clock + # component. This is safe to do as long as we *always* ignore the vector + # clock components. + current_id = max_token.stream + services = self.store.get_app_services() if not services or not self.notify_appservices: return @@ -64,6 +78,12 @@ class ApplicationServicesHandler: if self.is_processing: return + # We only start a new background process if necessary rather than + # optimistically (to cut down on overhead). + self._notify_interested_services(max_token) + + @wrap_as_background_process("notify_interested_services") + async def _notify_interested_services(self, max_token: RoomStreamToken): with Measure(self.clock, "notify_interested_services"): self.is_processing = True try: @@ -79,7 +99,7 @@ class ApplicationServicesHandler: if not events: break - events_by_room = {} + events_by_room = {} # type: Dict[str, List[EventBase]] for event in events: events_by_room.setdefault(event.room_id, []).append(event) @@ -158,11 +178,139 @@ class ApplicationServicesHandler: finally: self.is_processing = False - async def query_user_exists(self, user_id): + def notify_interested_services_ephemeral( + self, + stream_key: str, + new_token: Optional[int], + users: Collection[Union[str, UserID]] = [], + ): + """This is called by the notifier in the background + when a ephemeral event handled by the homeserver. + + This will determine which appservices + are interested in the event, and submit them. + + Events will only be pushed to appservices + that have opted into ephemeral events + + Args: + stream_key: The stream the event came from. + new_token: The latest stream token + users: The user(s) involved with the event. + """ + if not self.notify_appservices: + return + + if stream_key not in ("typing_key", "receipt_key", "presence_key"): + return + + services = [ + service + for service in self.store.get_app_services() + if service.supports_ephemeral + ] + if not services: + return + + # We only start a new background process if necessary rather than + # optimistically (to cut down on overhead). + self._notify_interested_services_ephemeral( + services, stream_key, new_token, users + ) + + @wrap_as_background_process("notify_interested_services_ephemeral") + async def _notify_interested_services_ephemeral( + self, + services: List[ApplicationService], + stream_key: str, + new_token: Optional[int], + users: Collection[Union[str, UserID]], + ): + logger.debug("Checking interested services for %s" % (stream_key)) + with Measure(self.clock, "notify_interested_services_ephemeral"): + for service in services: + # Only handle typing if we have the latest token + if stream_key == "typing_key" and new_token is not None: + events = await self._handle_typing(service, new_token) + if events: + self.scheduler.submit_ephemeral_events_for_as(service, events) + # We don't persist the token for typing_key for performance reasons + elif stream_key == "receipt_key": + events = await self._handle_receipts(service) + if events: + self.scheduler.submit_ephemeral_events_for_as(service, events) + await self.store.set_type_stream_id_for_appservice( + service, "read_receipt", new_token + ) + elif stream_key == "presence_key": + events = await self._handle_presence(service, users) + if events: + self.scheduler.submit_ephemeral_events_for_as(service, events) + await self.store.set_type_stream_id_for_appservice( + service, "presence", new_token + ) + + async def _handle_typing( + self, service: ApplicationService, new_token: int + ) -> List[JsonDict]: + typing_source = self.event_sources.sources["typing"] + # Get the typing events from just before current + typing, _ = await typing_source.get_new_events_as( + service=service, + # For performance reasons, we don't persist the previous + # token in the DB and instead fetch the latest typing information + # for appservices. + from_key=new_token - 1, + ) + return typing + + async def _handle_receipts(self, service: ApplicationService) -> List[JsonDict]: + from_key = await self.store.get_type_stream_id_for_appservice( + service, "read_receipt" + ) + receipts_source = self.event_sources.sources["receipt"] + receipts, _ = await receipts_source.get_new_events_as( + service=service, from_key=from_key + ) + return receipts + + async def _handle_presence( + self, service: ApplicationService, users: Collection[Union[str, UserID]] + ) -> List[JsonDict]: + events = [] # type: List[JsonDict] + presence_source = self.event_sources.sources["presence"] + from_key = await self.store.get_type_stream_id_for_appservice( + service, "presence" + ) + for user in users: + if isinstance(user, str): + user = UserID.from_string(user) + + interested = await service.is_interested_in_presence(user, self.store) + if not interested: + continue + presence_events, _ = await presence_source.get_new_events( + user=user, service=service, from_key=from_key, + ) + time_now = self.clock.time_msec() + events.extend( + { + "type": "m.presence", + "sender": event.user_id, + "content": format_user_presence_state( + event, time_now, include_user_id=False + ), + } + for event in presence_events + ) + + return events + + async def query_user_exists(self, user_id: str) -> bool: """Check if any application service knows this user_id exists. Args: - user_id(str): The user to query if they exist on any AS. + user_id: The user to query if they exist on any AS. Returns: True if this user exists on at least one application service. """ @@ -173,11 +321,13 @@ class ApplicationServicesHandler: return True return False - async def query_room_alias_exists(self, room_alias): + async def query_room_alias_exists( + self, room_alias: RoomAlias + ) -> Optional[RoomAliasMapping]: """Check if an application service knows this room alias exists. Args: - room_alias(RoomAlias): The room alias to query. + room_alias: The room alias to query. Returns: namedtuple: with keys "room_id" and "servers" or None if no association can be found. @@ -193,10 +343,13 @@ class ApplicationServicesHandler: ) if is_known_alias: # the alias exists now so don't query more ASes. - result = await self.store.get_association_from_room_alias(room_alias) - return result + return await self.store.get_association_from_room_alias(room_alias) - async def query_3pe(self, kind, protocol, fields): + return None + + async def query_3pe( + self, kind: str, protocol: str, fields: Dict[bytes, List[bytes]] + ) -> List[JsonDict]: services = self._get_services_for_3pn(protocol) results = await make_deferred_yieldable( @@ -218,9 +371,11 @@ class ApplicationServicesHandler: return ret - async def get_3pe_protocols(self, only_protocol=None): + async def get_3pe_protocols( + self, only_protocol: Optional[str] = None + ) -> Dict[str, JsonDict]: services = self.store.get_app_services() - protocols = {} + protocols = {} # type: Dict[str, List[JsonDict]] # Collect up all the individual protocol responses out of the ASes for s in services: @@ -236,7 +391,7 @@ class ApplicationServicesHandler: if info is not None: protocols[p].append(info) - def _merge_instances(infos): + def _merge_instances(infos: List[JsonDict]) -> JsonDict: if not infos: return {} @@ -251,19 +406,17 @@ class ApplicationServicesHandler: return combined - for p in protocols.keys(): - protocols[p] = _merge_instances(protocols[p]) - - return protocols + return {p: _merge_instances(protocols[p]) for p in protocols.keys()} - async def _get_services_for_event(self, event): + async def _get_services_for_event( + self, event: EventBase + ) -> List[ApplicationService]: """Retrieve a list of application services interested in this event. Args: - event(Event): The event to check. Can be None if alias_list is not. + event: The event to check. Can be None if alias_list is not. Returns: - list<ApplicationService>: A list of services interested in this - event based on the service regex. + A list of services interested in this event based on the service regex. """ services = self.store.get_app_services() @@ -277,17 +430,15 @@ class ApplicationServicesHandler: return interested_list - def _get_services_for_user(self, user_id): + def _get_services_for_user(self, user_id: str) -> List[ApplicationService]: services = self.store.get_app_services() - interested_list = [s for s in services if (s.is_interested_in_user(user_id))] - return interested_list + return [s for s in services if (s.is_interested_in_user(user_id))] - def _get_services_for_3pn(self, protocol): + def _get_services_for_3pn(self, protocol: str) -> List[ApplicationService]: services = self.store.get_app_services() - interested_list = [s for s in services if s.is_interested_in_protocol(protocol)] - return interested_list + return [s for s in services if s.is_interested_in_protocol(protocol)] - async def _is_unknown_user(self, user_id): + async def _is_unknown_user(self, user_id: str) -> bool: if not self.is_mine_id(user_id): # we don't know if they are unknown or not since it isn't one of our # users. We can't poke ASes. @@ -302,9 +453,8 @@ class ApplicationServicesHandler: service_list = [s for s in services if s.sender == user_id] return len(service_list) == 0 - async def _check_user_exists(self, user_id): + async def _check_user_exists(self, user_id: str) -> bool: unknown_user = await self._is_unknown_user(user_id) if unknown_user: - exists = await self.query_user_exists(user_id) - return exists + return await self.query_user_exists(user_id) return True |