diff options
| -rw-r--r-- | changelog.d/16172.misc | 1 | ||||
| -rw-r--r-- | synapse/handlers/presence.py | 155 | ||||
| -rw-r--r-- | synapse/replication/tcp/commands.py | 17 | ||||
| -rw-r--r-- | synapse/replication/tcp/handler.py | 19 |
4 files changed, 129 insertions, 63 deletions
diff --git a/changelog.d/16172.misc b/changelog.d/16172.misc new file mode 100644 index 0000000000..4d709cb56e --- /dev/null +++ b/changelog.d/16172.misc @@ -0,0 +1 @@ +Track per-device information in the presence code. diff --git a/synapse/handlers/presence.py b/synapse/handlers/presence.py index 50c68c86ce..2f841863ae 100644 --- a/synapse/handlers/presence.py +++ b/synapse/handlers/presence.py @@ -23,6 +23,7 @@ The methods that define policy are: """ import abc import contextlib +import itertools import logging from bisect import bisect from contextlib import contextmanager @@ -188,15 +189,17 @@ class BasePresenceHandler(abc.ABC): """ @abc.abstractmethod - def get_currently_syncing_users_for_replication(self) -> Iterable[str]: - """Get an iterable of syncing users on this worker, to send to the presence handler + def get_currently_syncing_users_for_replication( + self, + ) -> Iterable[Tuple[str, Optional[str]]]: + """Get an iterable of syncing users and devices on this worker, to send to the presence handler This is called when a replication connection is established. It should return - a list of user ids, which are then sent as USER_SYNC commands to inform the - process handling presence about those users. + a list of tuples of user ID & device ID, which are then sent as USER_SYNC commands + to inform the process handling presence about those users/devices. Returns: - An iterable of user_id strings. + An iterable of tuples of user ID and device ID. """ async def get_state(self, target_user: UserID) -> UserPresenceState: @@ -284,7 +287,12 @@ class BasePresenceHandler(abc.ABC): """ async def update_external_syncs_row( # noqa: B027 (no-op by design) - self, process_id: str, user_id: str, is_syncing: bool, sync_time_msec: int + self, + process_id: str, + user_id: str, + device_id: Optional[str], + is_syncing: bool, + sync_time_msec: int, ) -> None: """Update the syncing users for an external process as a delta. @@ -295,6 +303,7 @@ class BasePresenceHandler(abc.ABC): syncing against. This allows synapse to process updates as user start and stop syncing against a given process. user_id: The user who has started or stopped syncing + device_id: The user's device that has started or stopped syncing is_syncing: Whether or not the user is now syncing sync_time_msec: Time in ms when the user was last syncing """ @@ -425,16 +434,18 @@ class WorkerPresenceHandler(BasePresenceHandler): hs.config.worker.writers.presence, ) - # The number of ongoing syncs on this process, by user id. + # The number of ongoing syncs on this process, by (user ID, device ID). # Empty if _presence_enabled is false. - self._user_to_num_current_syncs: Dict[str, int] = {} + self._user_device_to_num_current_syncs: Dict[ + Tuple[str, Optional[str]], int + ] = {} self.notifier = hs.get_notifier() self.instance_id = hs.get_instance_id() - # user_id -> last_sync_ms. Lists the users that have stopped syncing but - # we haven't notified the presence writer of that yet - self.users_going_offline: Dict[str, int] = {} + # (user_id, device_id) -> last_sync_ms. Lists the devices that have stopped + # syncing but we haven't notified the presence writer of that yet + self._user_devices_going_offline: Dict[Tuple[str, Optional[str]], int] = {} self._bump_active_client = ReplicationBumpPresenceActiveTime.make_client(hs) self._set_state_client = ReplicationPresenceSetState.make_client(hs) @@ -457,39 +468,47 @@ class WorkerPresenceHandler(BasePresenceHandler): ClearUserSyncsCommand(self.instance_id) ) - def send_user_sync(self, user_id: str, is_syncing: bool, last_sync_ms: int) -> None: + def send_user_sync( + self, + user_id: str, + device_id: Optional[str], + is_syncing: bool, + last_sync_ms: int, + ) -> None: if self._presence_enabled: self.hs.get_replication_command_handler().send_user_sync( - self.instance_id, user_id, is_syncing, last_sync_ms + self.instance_id, user_id, device_id, is_syncing, last_sync_ms ) - def mark_as_coming_online(self, user_id: str) -> None: + def mark_as_coming_online(self, user_id: str, device_id: Optional[str]) -> None: """A user has started syncing. Send a UserSync to the presence writer, unless they had recently stopped syncing. """ - going_offline = self.users_going_offline.pop(user_id, None) + going_offline = self._user_devices_going_offline.pop((user_id, device_id), None) if not going_offline: # Safe to skip because we haven't yet told the presence writer they # were offline - self.send_user_sync(user_id, True, self.clock.time_msec()) + self.send_user_sync(user_id, device_id, True, self.clock.time_msec()) - def mark_as_going_offline(self, user_id: str) -> None: + def mark_as_going_offline(self, user_id: str, device_id: Optional[str]) -> None: """A user has stopped syncing. We wait before notifying the presence writer as its likely they'll come back soon. This allows us to avoid sending a stopped syncing immediately followed by a started syncing notification to the presence writer """ - self.users_going_offline[user_id] = self.clock.time_msec() + self._user_devices_going_offline[(user_id, device_id)] = self.clock.time_msec() def send_stop_syncing(self) -> None: """Check if there are any users who have stopped syncing a while ago and haven't come back yet. If there are poke the presence writer about them. """ now = self.clock.time_msec() - for user_id, last_sync_ms in list(self.users_going_offline.items()): + for (user_id, device_id), last_sync_ms in list( + self._user_devices_going_offline.items() + ): if now - last_sync_ms > UPDATE_SYNCING_USERS_MS: - self.users_going_offline.pop(user_id, None) - self.send_user_sync(user_id, False, last_sync_ms) + self._user_devices_going_offline.pop((user_id, device_id), None) + self.send_user_sync(user_id, device_id, False, last_sync_ms) async def user_syncing( self, @@ -515,23 +534,23 @@ class WorkerPresenceHandler(BasePresenceHandler): is_sync=True, ) - curr_sync = self._user_to_num_current_syncs.get(user_id, 0) - self._user_to_num_current_syncs[user_id] = curr_sync + 1 + curr_sync = self._user_device_to_num_current_syncs.get((user_id, device_id), 0) + self._user_device_to_num_current_syncs[(user_id, device_id)] = curr_sync + 1 # If this is the first in-flight sync, notify replication - if self._user_to_num_current_syncs[user_id] == 1: - self.mark_as_coming_online(user_id) + if self._user_device_to_num_current_syncs[(user_id, device_id)] == 1: + self.mark_as_coming_online(user_id, device_id) def _end() -> None: # We check that the user_id is in user_to_num_current_syncs because # user_to_num_current_syncs may have been cleared if we are # shutting down. - if user_id in self._user_to_num_current_syncs: - self._user_to_num_current_syncs[user_id] -= 1 + if (user_id, device_id) in self._user_device_to_num_current_syncs: + self._user_device_to_num_current_syncs[(user_id, device_id)] -= 1 # If there are no more in-flight syncs, notify replication - if self._user_to_num_current_syncs[user_id] == 0: - self.mark_as_going_offline(user_id) + if self._user_device_to_num_current_syncs[(user_id, device_id)] == 0: + self.mark_as_going_offline(user_id, device_id) @contextlib.contextmanager def _user_syncing() -> Generator[None, None, None]: @@ -598,10 +617,12 @@ class WorkerPresenceHandler(BasePresenceHandler): # If this is a federation sender, notify about presence updates. await self.maybe_send_presence_to_interested_destinations(state_to_notify) - def get_currently_syncing_users_for_replication(self) -> Iterable[str]: + def get_currently_syncing_users_for_replication( + self, + ) -> Iterable[Tuple[str, Optional[str]]]: return [ - user_id - for user_id, count in self._user_to_num_current_syncs.items() + user_id_device_id + for user_id_device_id, count in self._user_device_to_num_current_syncs.items() if count > 0 ] @@ -723,17 +744,23 @@ class PresenceHandler(BasePresenceHandler): # Keeps track of the number of *ongoing* syncs on this process. While # this is non zero a user will never go offline. - self.user_to_num_current_syncs: Dict[str, int] = {} + self._user_device_to_num_current_syncs: Dict[ + Tuple[str, Optional[str]], int + ] = {} # Keeps track of the number of *ongoing* syncs on other processes. + # # While any sync is ongoing on another process the user will never # go offline. + # # Each process has a unique identifier and an update frequency. If # no update is received from that process within the update period then # we assume that all the sync requests on that process have stopped. - # Stored as a dict from process_id to set of user_id, and a dict of - # process_id to millisecond timestamp last updated. - self.external_process_to_current_syncs: Dict[str, Set[str]] = {} + # Stored as a dict from process_id to set of (user_id, device_id), and + # a dict of process_id to millisecond timestamp last updated. + self.external_process_to_current_syncs: Dict[ + str, Set[Tuple[str, Optional[str]]] + ] = {} self.external_process_last_updated_ms: Dict[str, int] = {} self.external_sync_linearizer = Linearizer(name="external_sync_linearizer") @@ -938,7 +965,10 @@ class PresenceHandler(BasePresenceHandler): # that were syncing on that process to see if they need to be timed # out. users_to_check.update( - self.external_process_to_current_syncs.pop(process_id, ()) + user_id + for user_id, device_id in self.external_process_to_current_syncs.pop( + process_id, () + ) ) self.external_process_last_updated_ms.pop(process_id) @@ -951,11 +981,15 @@ class PresenceHandler(BasePresenceHandler): syncing_user_ids = { user_id - for user_id, count in self.user_to_num_current_syncs.items() + for (user_id, _), count in self._user_device_to_num_current_syncs.items() if count } - for user_ids in self.external_process_to_current_syncs.values(): - syncing_user_ids.update(user_ids) + syncing_user_ids.update( + user_id + for user_id, _ in itertools.chain( + *self.external_process_to_current_syncs.values() + ) + ) changes = handle_timeouts( states, @@ -1013,8 +1047,8 @@ class PresenceHandler(BasePresenceHandler): if not affect_presence or not self._presence_enabled: return _NullContextManager() - curr_sync = self.user_to_num_current_syncs.get(user_id, 0) - self.user_to_num_current_syncs[user_id] = curr_sync + 1 + curr_sync = self._user_device_to_num_current_syncs.get((user_id, device_id), 0) + self._user_device_to_num_current_syncs[(user_id, device_id)] = curr_sync + 1 # Note that this causes last_active_ts to be incremented which is not # what the spec wants. @@ -1027,7 +1061,7 @@ class PresenceHandler(BasePresenceHandler): async def _end() -> None: try: - self.user_to_num_current_syncs[user_id] -= 1 + self._user_device_to_num_current_syncs[(user_id, device_id)] -= 1 prev_state = await self.current_state_for_user(user_id) await self._update_states( @@ -1049,12 +1083,19 @@ class PresenceHandler(BasePresenceHandler): return _user_syncing() - def get_currently_syncing_users_for_replication(self) -> Iterable[str]: + def get_currently_syncing_users_for_replication( + self, + ) -> Iterable[Tuple[str, Optional[str]]]: # since we are the process handling presence, there is nothing to do here. return [] async def update_external_syncs_row( - self, process_id: str, user_id: str, is_syncing: bool, sync_time_msec: int + self, + process_id: str, + user_id: str, + device_id: Optional[str], + is_syncing: bool, + sync_time_msec: int, ) -> None: """Update the syncing users for an external process as a delta. @@ -1063,6 +1104,7 @@ class PresenceHandler(BasePresenceHandler): syncing against. This allows synapse to process updates as user start and stop syncing against a given process. user_id: The user who has started or stopped syncing + device_id: The user's device that has started or stopped syncing is_syncing: Whether or not the user is now syncing sync_time_msec: Time in ms when the user was last syncing """ @@ -1073,26 +1115,27 @@ class PresenceHandler(BasePresenceHandler): process_id, set() ) - # USER_SYNC is sent when a user starts or stops syncing on a remote - # process. (But only for the initial and last device.) + # USER_SYNC is sent when a user's device starts or stops syncing on + # a remote # process. (But only for the initial and last sync for that + # device.) # - # When a user *starts* syncing it also calls set_state(...) which + # When a device *starts* syncing it also calls set_state(...) which # will update the state, last_active_ts, and last_user_sync_ts. - # Simply ensure the user is tracked as syncing in this case. + # Simply ensure the user & device is tracked as syncing in this case. # - # When a user *stops* syncing, update the last_user_sync_ts and mark + # When a device *stops* syncing, update the last_user_sync_ts and mark # them as no longer syncing. Note this doesn't quite match the # monolith behaviour, which updates last_user_sync_ts at the end of # every sync, not just the last in-flight sync. - if is_syncing and user_id not in process_presence: - process_presence.add(user_id) - elif not is_syncing and user_id in process_presence: + if is_syncing and (user_id, device_id) not in process_presence: + process_presence.add((user_id, device_id)) + elif not is_syncing and (user_id, device_id) in process_presence: new_state = prev_state.copy_and_replace( last_user_sync_ts=sync_time_msec ) await self._update_states([new_state]) - process_presence.discard(user_id) + process_presence.discard((user_id, device_id)) self.external_process_last_updated_ms[process_id] = self.clock.time_msec() @@ -1106,7 +1149,9 @@ class PresenceHandler(BasePresenceHandler): process_presence = self.external_process_to_current_syncs.pop( process_id, set() ) - prev_states = await self.current_state_for_users(process_presence) + prev_states = await self.current_state_for_users( + {user_id for user_id, device_id in process_presence} + ) time_now_ms = self.clock.time_msec() await self._update_states( diff --git a/synapse/replication/tcp/commands.py b/synapse/replication/tcp/commands.py index 58a871c6d9..e616b5e1c8 100644 --- a/synapse/replication/tcp/commands.py +++ b/synapse/replication/tcp/commands.py @@ -267,27 +267,38 @@ class UserSyncCommand(Command): NAME = "USER_SYNC" def __init__( - self, instance_id: str, user_id: str, is_syncing: bool, last_sync_ms: int + self, + instance_id: str, + user_id: str, + device_id: Optional[str], + is_syncing: bool, + last_sync_ms: int, ): self.instance_id = instance_id self.user_id = user_id + self.device_id = device_id self.is_syncing = is_syncing self.last_sync_ms = last_sync_ms @classmethod def from_line(cls: Type["UserSyncCommand"], line: str) -> "UserSyncCommand": - instance_id, user_id, state, last_sync_ms = line.split(" ", 3) + device_id: Optional[str] + instance_id, user_id, device_id, state, last_sync_ms = line.split(" ", 4) + + if device_id == "None": + device_id = None if state not in ("start", "end"): raise Exception("Invalid USER_SYNC state %r" % (state,)) - return cls(instance_id, user_id, state == "start", int(last_sync_ms)) + return cls(instance_id, user_id, device_id, state == "start", int(last_sync_ms)) def to_line(self) -> str: return " ".join( ( self.instance_id, self.user_id, + str(self.device_id), "start" if self.is_syncing else "end", str(self.last_sync_ms), ) diff --git a/synapse/replication/tcp/handler.py b/synapse/replication/tcp/handler.py index 92c5a55acc..d9045d7b73 100644 --- a/synapse/replication/tcp/handler.py +++ b/synapse/replication/tcp/handler.py @@ -428,7 +428,11 @@ class ReplicationCommandHandler: if self._is_presence_writer: return self._presence_handler.update_external_syncs_row( - cmd.instance_id, cmd.user_id, cmd.is_syncing, cmd.last_sync_ms + cmd.instance_id, + cmd.user_id, + cmd.device_id, + cmd.is_syncing, + cmd.last_sync_ms, ) else: return None @@ -699,9 +703,9 @@ class ReplicationCommandHandler: ) now = self._clock.time_msec() - for user_id in currently_syncing: + for user_id, device_id in currently_syncing: connection.send_command( - UserSyncCommand(self._instance_id, user_id, True, now) + UserSyncCommand(self._instance_id, user_id, device_id, True, now) ) def lost_connection(self, connection: IReplicationConnection) -> None: @@ -753,11 +757,16 @@ class ReplicationCommandHandler: self.send_command(FederationAckCommand(self._instance_name, token)) def send_user_sync( - self, instance_id: str, user_id: str, is_syncing: bool, last_sync_ms: int + self, + instance_id: str, + user_id: str, + device_id: Optional[str], + is_syncing: bool, + last_sync_ms: int, ) -> None: """Poke the master that a user has started/stopped syncing.""" self.send_command( - UserSyncCommand(instance_id, user_id, is_syncing, last_sync_ms) + UserSyncCommand(instance_id, user_id, device_id, is_syncing, last_sync_ms) ) def send_user_ip( |