834 lines
31 KiB
Python
834 lines
31 KiB
Python
# Copyright 2019 New Vector Ltd
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# 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 abc
|
|
import logging
|
|
from collections import OrderedDict
|
|
from typing import (
|
|
TYPE_CHECKING,
|
|
Collection,
|
|
Dict,
|
|
Hashable,
|
|
Iterable,
|
|
List,
|
|
Optional,
|
|
Set,
|
|
Tuple,
|
|
)
|
|
|
|
import attr
|
|
from prometheus_client import Counter
|
|
from typing_extensions import Literal
|
|
|
|
from twisted.internet import defer
|
|
from twisted.internet.interfaces import IDelayedCall
|
|
|
|
import synapse.metrics
|
|
from synapse.api.presence import UserPresenceState
|
|
from synapse.events import EventBase
|
|
from synapse.federation.sender.per_destination_queue import PerDestinationQueue
|
|
from synapse.federation.sender.transaction_manager import TransactionManager
|
|
from synapse.federation.units import Edu
|
|
from synapse.logging.context import make_deferred_yieldable, run_in_background
|
|
from synapse.metrics import (
|
|
LaterGauge,
|
|
event_processing_loop_counter,
|
|
event_processing_loop_room_count,
|
|
events_processed_counter,
|
|
)
|
|
from synapse.metrics.background_process_metrics import (
|
|
run_as_background_process,
|
|
wrap_as_background_process,
|
|
)
|
|
from synapse.types import JsonDict, ReadReceipt, RoomStreamToken
|
|
from synapse.util import Clock
|
|
from synapse.util.metrics import Measure
|
|
|
|
if TYPE_CHECKING:
|
|
from synapse.events.presence_router import PresenceRouter
|
|
from synapse.server import HomeServer
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
sent_pdus_destination_dist_count = Counter(
|
|
"synapse_federation_client_sent_pdu_destinations:count",
|
|
"Number of PDUs queued for sending to one or more destinations",
|
|
)
|
|
|
|
sent_pdus_destination_dist_total = Counter(
|
|
"synapse_federation_client_sent_pdu_destinations:total",
|
|
"Total number of PDUs queued for sending across all destinations",
|
|
)
|
|
|
|
# Time (in s) after Synapse's startup that we will begin to wake up destinations
|
|
# that have catch-up outstanding.
|
|
CATCH_UP_STARTUP_DELAY_SEC = 15
|
|
|
|
# Time (in s) to wait in between waking up each destination, i.e. one destination
|
|
# will be woken up every <x> seconds after Synapse's startup until we have woken
|
|
# every destination has outstanding catch-up.
|
|
CATCH_UP_STARTUP_INTERVAL_SEC = 5
|
|
|
|
|
|
class AbstractFederationSender(metaclass=abc.ABCMeta):
|
|
@abc.abstractmethod
|
|
def notify_new_events(self, max_token: RoomStreamToken) -> None:
|
|
"""This gets called when we have some new events we might want to
|
|
send out to other servers.
|
|
"""
|
|
raise NotImplementedError()
|
|
|
|
@abc.abstractmethod
|
|
async def send_read_receipt(self, receipt: ReadReceipt) -> None:
|
|
"""Send a RR to any other servers in the room
|
|
|
|
Args:
|
|
receipt: receipt to be sent
|
|
"""
|
|
raise NotImplementedError()
|
|
|
|
@abc.abstractmethod
|
|
def send_presence_to_destinations(
|
|
self, states: Iterable[UserPresenceState], destinations: Iterable[str]
|
|
) -> None:
|
|
"""Send the given presence states to the given destinations.
|
|
|
|
Args:
|
|
destinations:
|
|
"""
|
|
raise NotImplementedError()
|
|
|
|
@abc.abstractmethod
|
|
def build_and_send_edu(
|
|
self,
|
|
destination: str,
|
|
edu_type: str,
|
|
content: JsonDict,
|
|
key: Optional[Hashable] = None,
|
|
) -> None:
|
|
"""Construct an Edu object, and queue it for sending
|
|
|
|
Args:
|
|
destination: name of server to send to
|
|
edu_type: type of EDU to send
|
|
content: content of EDU
|
|
key: clobbering key for this edu
|
|
"""
|
|
raise NotImplementedError()
|
|
|
|
@abc.abstractmethod
|
|
def send_device_messages(self, destination: str, immediate: bool = True) -> None:
|
|
"""Tells the sender that a new device message is ready to be sent to the
|
|
destination. The `immediate` flag specifies whether the messages should
|
|
be tried to be sent immediately, or whether it can be delayed for a
|
|
short while (to aid performance).
|
|
"""
|
|
raise NotImplementedError()
|
|
|
|
@abc.abstractmethod
|
|
def wake_destination(self, destination: str) -> None:
|
|
"""Called when we want to retry sending transactions to a remote.
|
|
|
|
This is mainly useful if the remote server has been down and we think it
|
|
might have come back.
|
|
"""
|
|
raise NotImplementedError()
|
|
|
|
@abc.abstractmethod
|
|
def get_current_token(self) -> int:
|
|
raise NotImplementedError()
|
|
|
|
@abc.abstractmethod
|
|
def federation_ack(self, instance_name: str, token: int) -> None:
|
|
raise NotImplementedError()
|
|
|
|
@abc.abstractmethod
|
|
async def get_replication_rows(
|
|
self, instance_name: str, from_token: int, to_token: int, target_row_count: int
|
|
) -> Tuple[List[Tuple[int, Tuple]], int, bool]:
|
|
raise NotImplementedError()
|
|
|
|
|
|
@attr.s
|
|
class _DestinationWakeupQueue:
|
|
"""A queue of destinations that need to be woken up due to new updates.
|
|
|
|
Staggers waking up of per destination queues to ensure that we don't attempt
|
|
to start TLS connections with many hosts all at once, leading to pinned CPU.
|
|
"""
|
|
|
|
# The maximum duration in seconds between queuing up a destination and it
|
|
# being woken up.
|
|
_MAX_TIME_IN_QUEUE = 30.0
|
|
|
|
# The maximum duration in seconds between waking up consecutive destination
|
|
# queues.
|
|
_MAX_DELAY = 0.1
|
|
|
|
sender: "FederationSender" = attr.ib()
|
|
clock: Clock = attr.ib()
|
|
queue: "OrderedDict[str, Literal[None]]" = attr.ib(factory=OrderedDict)
|
|
processing: bool = attr.ib(default=False)
|
|
|
|
def add_to_queue(self, destination: str) -> None:
|
|
"""Add a destination to the queue to be woken up."""
|
|
|
|
self.queue[destination] = None
|
|
|
|
if not self.processing:
|
|
self._handle()
|
|
|
|
@wrap_as_background_process("_DestinationWakeupQueue.handle")
|
|
async def _handle(self) -> None:
|
|
"""Background process to drain the queue."""
|
|
|
|
if not self.queue:
|
|
return
|
|
|
|
assert not self.processing
|
|
self.processing = True
|
|
|
|
try:
|
|
# We start with a delay that should drain the queue quickly enough that
|
|
# we process all destinations in the queue in _MAX_TIME_IN_QUEUE
|
|
# seconds.
|
|
#
|
|
# We also add an upper bound to the delay, to gracefully handle the
|
|
# case where the queue only has a few entries in it.
|
|
current_sleep_seconds = min(
|
|
self._MAX_DELAY, self._MAX_TIME_IN_QUEUE / len(self.queue)
|
|
)
|
|
|
|
while self.queue:
|
|
destination, _ = self.queue.popitem(last=False)
|
|
|
|
queue = self.sender._get_per_destination_queue(destination)
|
|
|
|
if not queue._new_data_to_send:
|
|
# The per destination queue has already been woken up.
|
|
continue
|
|
|
|
queue.attempt_new_transaction()
|
|
|
|
await self.clock.sleep(current_sleep_seconds)
|
|
|
|
if not self.queue:
|
|
break
|
|
|
|
# More destinations may have been added to the queue, so we may
|
|
# need to reduce the delay to ensure everything gets processed
|
|
# within _MAX_TIME_IN_QUEUE seconds.
|
|
current_sleep_seconds = min(
|
|
current_sleep_seconds, self._MAX_TIME_IN_QUEUE / len(self.queue)
|
|
)
|
|
|
|
finally:
|
|
self.processing = False
|
|
|
|
|
|
class FederationSender(AbstractFederationSender):
|
|
def __init__(self, hs: "HomeServer"):
|
|
self.hs = hs
|
|
self.server_name = hs.hostname
|
|
|
|
self.store = hs.get_datastores().main
|
|
self.state = hs.get_state_handler()
|
|
|
|
self._storage_controllers = hs.get_storage_controllers()
|
|
|
|
self.clock = hs.get_clock()
|
|
self.is_mine_id = hs.is_mine_id
|
|
|
|
self._presence_router: Optional["PresenceRouter"] = None
|
|
self._transaction_manager = TransactionManager(hs)
|
|
|
|
self._instance_name = hs.get_instance_name()
|
|
self._federation_shard_config = hs.config.worker.federation_shard_config
|
|
|
|
# map from destination to PerDestinationQueue
|
|
self._per_destination_queues: Dict[str, PerDestinationQueue] = {}
|
|
|
|
LaterGauge(
|
|
"synapse_federation_transaction_queue_pending_destinations",
|
|
"",
|
|
[],
|
|
lambda: sum(
|
|
1
|
|
for d in self._per_destination_queues.values()
|
|
if d.transmission_loop_running
|
|
),
|
|
)
|
|
|
|
LaterGauge(
|
|
"synapse_federation_transaction_queue_pending_pdus",
|
|
"",
|
|
[],
|
|
lambda: sum(
|
|
d.pending_pdu_count() for d in self._per_destination_queues.values()
|
|
),
|
|
)
|
|
LaterGauge(
|
|
"synapse_federation_transaction_queue_pending_edus",
|
|
"",
|
|
[],
|
|
lambda: sum(
|
|
d.pending_edu_count() for d in self._per_destination_queues.values()
|
|
),
|
|
)
|
|
|
|
self._is_processing = False
|
|
self._last_poked_id = -1
|
|
|
|
# map from room_id to a set of PerDestinationQueues which we believe are
|
|
# awaiting a call to flush_read_receipts_for_room. The presence of an entry
|
|
# here for a given room means that we are rate-limiting RR flushes to that room,
|
|
# and that there is a pending call to _flush_rrs_for_room in the system.
|
|
self._queues_awaiting_rr_flush_by_room: Dict[str, Set[PerDestinationQueue]] = {}
|
|
|
|
self._rr_txn_interval_per_room_ms = (
|
|
1000.0
|
|
/ hs.config.ratelimiting.federation_rr_transactions_per_room_per_second
|
|
)
|
|
|
|
# wake up destinations that have outstanding PDUs to be caught up
|
|
self._catchup_after_startup_timer: Optional[
|
|
IDelayedCall
|
|
] = self.clock.call_later(
|
|
CATCH_UP_STARTUP_DELAY_SEC,
|
|
run_as_background_process,
|
|
"wake_destinations_needing_catchup",
|
|
self._wake_destinations_needing_catchup,
|
|
)
|
|
|
|
self._external_cache = hs.get_external_cache()
|
|
|
|
self._destination_wakeup_queue = _DestinationWakeupQueue(self, self.clock)
|
|
|
|
def _get_per_destination_queue(self, destination: str) -> PerDestinationQueue:
|
|
"""Get or create a PerDestinationQueue for the given destination
|
|
|
|
Args:
|
|
destination: server_name of remote server
|
|
"""
|
|
queue = self._per_destination_queues.get(destination)
|
|
if not queue:
|
|
queue = PerDestinationQueue(self.hs, self._transaction_manager, destination)
|
|
self._per_destination_queues[destination] = queue
|
|
return queue
|
|
|
|
def notify_new_events(self, max_token: RoomStreamToken) -> None:
|
|
"""This gets called when we have some new events we might want to
|
|
send out to other servers.
|
|
"""
|
|
# 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
|
|
|
|
self._last_poked_id = max(current_id, self._last_poked_id)
|
|
|
|
if self._is_processing:
|
|
return
|
|
|
|
# fire off a processing loop in the background
|
|
run_as_background_process(
|
|
"process_event_queue_for_federation", self._process_event_queue_loop
|
|
)
|
|
|
|
async def _process_event_queue_loop(self) -> None:
|
|
try:
|
|
self._is_processing = True
|
|
while True:
|
|
last_token = await self.store.get_federation_out_pos("events")
|
|
(
|
|
next_token,
|
|
events,
|
|
event_to_received_ts,
|
|
) = await self.store.get_all_new_events_stream(
|
|
last_token, self._last_poked_id, limit=100
|
|
)
|
|
|
|
logger.debug(
|
|
"Handling %i -> %i: %i events to send (current id %i)",
|
|
last_token,
|
|
next_token,
|
|
len(events),
|
|
self._last_poked_id,
|
|
)
|
|
|
|
if not events and next_token >= self._last_poked_id:
|
|
logger.debug("All events processed")
|
|
break
|
|
|
|
async def handle_event(event: EventBase) -> None:
|
|
# Only send events for this server.
|
|
send_on_behalf_of = event.internal_metadata.get_send_on_behalf_of()
|
|
is_mine = self.is_mine_id(event.sender)
|
|
if not is_mine and send_on_behalf_of is None:
|
|
logger.debug("Not sending remote-origin event %s", event)
|
|
return
|
|
|
|
# We also want to not send out-of-band membership events.
|
|
#
|
|
# OOB memberships are used in three (and a half) situations:
|
|
#
|
|
# (1) invite events which we have received over federation. Those
|
|
# will have a `sender` on a different server, so will be
|
|
# skipped by the "is_mine" test above anyway.
|
|
#
|
|
# (2) rejections of invites to federated rooms - either remotely
|
|
# or locally generated. (Such rejections are normally
|
|
# created via federation, in which case the remote server is
|
|
# responsible for sending out the rejection. If that fails,
|
|
# we'll create a leave event locally, but that's only really
|
|
# for the benefit of the invited user - we don't have enough
|
|
# information to send it out over federation).
|
|
#
|
|
# (2a) rescinded knocks. These are identical to rejected invites.
|
|
#
|
|
# (3) knock events which we have sent over federation. As with
|
|
# invite rejections, the remote server should send them out to
|
|
# the federation.
|
|
#
|
|
# So, in all the above cases, we want to ignore such events.
|
|
#
|
|
# OOB memberships are always(?) outliers anyway, so if we *don't*
|
|
# ignore them, we'll get an exception further down when we try to
|
|
# fetch the membership list for the room.
|
|
#
|
|
# Arguably, we could equivalently ignore all outliers here, since
|
|
# in theory the only way for an outlier with a local `sender` to
|
|
# exist is by being an OOB membership (via one of (2), (2a) or (3)
|
|
# above).
|
|
#
|
|
if event.internal_metadata.is_out_of_band_membership():
|
|
logger.debug("Not sending OOB membership event %s", event)
|
|
return
|
|
|
|
# Finally, there are some other events that we should not send out
|
|
# until someone asks for them. They are explicitly flagged as such
|
|
# with `proactively_send: False`.
|
|
if not event.internal_metadata.should_proactively_send():
|
|
logger.debug(
|
|
"Not sending event with proactively_send=false: %s", event
|
|
)
|
|
return
|
|
|
|
destinations: Optional[Collection[str]] = None
|
|
if not event.prev_event_ids():
|
|
# If there are no prev event IDs then the state is empty
|
|
# and so no remote servers in the room
|
|
destinations = set()
|
|
else:
|
|
# We check the external cache for the destinations, which is
|
|
# stored per state group.
|
|
|
|
sg = await self._external_cache.get(
|
|
"event_to_prev_state_group", event.event_id
|
|
)
|
|
if sg:
|
|
destinations = await self._external_cache.get(
|
|
"get_joined_hosts", str(sg)
|
|
)
|
|
|
|
if destinations is None:
|
|
try:
|
|
# Get the state from before the event.
|
|
# We need to make sure that this is the state from before
|
|
# the event and not from after it.
|
|
# Otherwise if the last member on a server in a room is
|
|
# banned then it won't receive the event because it won't
|
|
# be in the room after the ban.
|
|
destinations = await self.state.get_hosts_in_room_at_events(
|
|
event.room_id, event_ids=event.prev_event_ids()
|
|
)
|
|
except Exception:
|
|
logger.exception(
|
|
"Failed to calculate hosts in room for event: %s",
|
|
event.event_id,
|
|
)
|
|
return
|
|
|
|
sharded_destinations = {
|
|
d
|
|
for d in destinations
|
|
if self._federation_shard_config.should_handle(
|
|
self._instance_name, d
|
|
)
|
|
}
|
|
|
|
if send_on_behalf_of is not None:
|
|
# If we are sending the event on behalf of another server
|
|
# then it already has the event and there is no reason to
|
|
# send the event to it.
|
|
sharded_destinations.discard(send_on_behalf_of)
|
|
|
|
logger.debug("Sending %s to %r", event, sharded_destinations)
|
|
|
|
if sharded_destinations:
|
|
await self._send_pdu(event, sharded_destinations)
|
|
|
|
now = self.clock.time_msec()
|
|
ts = event_to_received_ts[event.event_id]
|
|
assert ts is not None
|
|
synapse.metrics.event_processing_lag_by_event.labels(
|
|
"federation_sender"
|
|
).observe((now - ts) / 1000)
|
|
|
|
async def handle_room_events(events: List[EventBase]) -> None:
|
|
logger.debug(
|
|
"Handling %i events in room %s", len(events), events[0].room_id
|
|
)
|
|
with Measure(self.clock, "handle_room_events"):
|
|
for event in events:
|
|
await handle_event(event)
|
|
|
|
events_by_room: Dict[str, List[EventBase]] = {}
|
|
for event in events:
|
|
events_by_room.setdefault(event.room_id, []).append(event)
|
|
|
|
await make_deferred_yieldable(
|
|
defer.gatherResults(
|
|
[
|
|
run_in_background(handle_room_events, evs)
|
|
for evs in events_by_room.values()
|
|
],
|
|
consumeErrors=True,
|
|
)
|
|
)
|
|
|
|
logger.debug("Successfully handled up to %i", next_token)
|
|
await self.store.update_federation_out_pos("events", next_token)
|
|
|
|
if events:
|
|
now = self.clock.time_msec()
|
|
ts = event_to_received_ts[events[-1].event_id]
|
|
assert ts is not None
|
|
|
|
synapse.metrics.event_processing_lag.labels(
|
|
"federation_sender"
|
|
).set(now - ts)
|
|
synapse.metrics.event_processing_last_ts.labels(
|
|
"federation_sender"
|
|
).set(ts)
|
|
|
|
events_processed_counter.inc(len(events))
|
|
|
|
event_processing_loop_room_count.labels("federation_sender").inc(
|
|
len(events_by_room)
|
|
)
|
|
|
|
event_processing_loop_counter.labels("federation_sender").inc()
|
|
|
|
synapse.metrics.event_processing_positions.labels(
|
|
"federation_sender"
|
|
).set(next_token)
|
|
|
|
finally:
|
|
self._is_processing = False
|
|
|
|
async def _send_pdu(self, pdu: EventBase, destinations: Iterable[str]) -> None:
|
|
# We loop through all destinations to see whether we already have
|
|
# a transaction in progress. If we do, stick it in the pending_pdus
|
|
# table and we'll get back to it later.
|
|
|
|
destinations = set(destinations)
|
|
destinations.discard(self.server_name)
|
|
logger.debug("Sending to: %s", str(destinations))
|
|
|
|
if not destinations:
|
|
return
|
|
|
|
sent_pdus_destination_dist_total.inc(len(destinations))
|
|
sent_pdus_destination_dist_count.inc()
|
|
|
|
assert pdu.internal_metadata.stream_ordering
|
|
|
|
# track the fact that we have a PDU for these destinations,
|
|
# to allow us to perform catch-up later on if the remote is unreachable
|
|
# for a while.
|
|
await self.store.store_destination_rooms_entries(
|
|
destinations,
|
|
pdu.room_id,
|
|
pdu.internal_metadata.stream_ordering,
|
|
)
|
|
|
|
for destination in destinations:
|
|
self._get_per_destination_queue(destination).send_pdu(pdu)
|
|
|
|
async def send_read_receipt(self, receipt: ReadReceipt) -> None:
|
|
"""Send a RR to any other servers in the room
|
|
|
|
Args:
|
|
receipt: receipt to be sent
|
|
"""
|
|
|
|
# Some background on the rate-limiting going on here.
|
|
#
|
|
# It turns out that if we attempt to send out RRs as soon as we get them from
|
|
# a client, then we end up trying to do several hundred Hz of federation
|
|
# transactions. (The number of transactions scales as O(N^2) on the size of a
|
|
# room, since in a large room we have both more RRs coming in, and more servers
|
|
# to send them to.)
|
|
#
|
|
# This leads to a lot of CPU load, and we end up getting behind. The solution
|
|
# currently adopted is as follows:
|
|
#
|
|
# The first receipt in a given room is sent out immediately, at time T0. Any
|
|
# further receipts are, in theory, batched up for N seconds, where N is calculated
|
|
# based on the number of servers in the room to achieve a transaction frequency
|
|
# of around 50Hz. So, for example, if there were 100 servers in the room, then
|
|
# N would be 100 / 50Hz = 2 seconds.
|
|
#
|
|
# Then, after T+N, we flush out any receipts that have accumulated, and restart
|
|
# the timer to flush out more receipts at T+2N, etc. If no receipts accumulate,
|
|
# we stop the cycle and go back to the start.
|
|
#
|
|
# However, in practice, it is often possible to flush out receipts earlier: in
|
|
# particular, if we are sending a transaction to a given server anyway (for
|
|
# example, because we have a PDU or a RR in another room to send), then we may
|
|
# as well send out all of the pending RRs for that server. So it may be that
|
|
# by the time we get to T+N, we don't actually have any RRs left to send out.
|
|
# Nevertheless we continue to buffer up RRs for the room in question until we
|
|
# reach the point that no RRs arrive between timer ticks.
|
|
#
|
|
# For even more background, see https://github.com/matrix-org/synapse/issues/4730.
|
|
|
|
room_id = receipt.room_id
|
|
|
|
# Work out which remote servers should be poked and poke them.
|
|
domains_set = await self._storage_controllers.state.get_current_hosts_in_room(
|
|
room_id
|
|
)
|
|
domains = [
|
|
d
|
|
for d in domains_set
|
|
if d != self.server_name
|
|
and self._federation_shard_config.should_handle(self._instance_name, d)
|
|
]
|
|
if not domains:
|
|
return
|
|
|
|
queues_pending_flush = self._queues_awaiting_rr_flush_by_room.get(room_id)
|
|
|
|
# if there is no flush yet scheduled, we will send out these receipts with
|
|
# immediate flushes, and schedule the next flush for this room.
|
|
if queues_pending_flush is not None:
|
|
logger.debug("Queuing receipt for: %r", domains)
|
|
else:
|
|
logger.debug("Sending receipt to: %r", domains)
|
|
self._schedule_rr_flush_for_room(room_id, len(domains))
|
|
|
|
for domain in domains:
|
|
queue = self._get_per_destination_queue(domain)
|
|
queue.queue_read_receipt(receipt)
|
|
|
|
# if there is already a RR flush pending for this room, then make sure this
|
|
# destination is registered for the flush
|
|
if queues_pending_flush is not None:
|
|
queues_pending_flush.add(queue)
|
|
else:
|
|
queue.flush_read_receipts_for_room(room_id)
|
|
|
|
def _schedule_rr_flush_for_room(self, room_id: str, n_domains: int) -> None:
|
|
# that is going to cause approximately len(domains) transactions, so now back
|
|
# off for that multiplied by RR_TXN_INTERVAL_PER_ROOM
|
|
backoff_ms = self._rr_txn_interval_per_room_ms * n_domains
|
|
|
|
logger.debug("Scheduling RR flush in %s in %d ms", room_id, backoff_ms)
|
|
self.clock.call_later(backoff_ms, self._flush_rrs_for_room, room_id)
|
|
self._queues_awaiting_rr_flush_by_room[room_id] = set()
|
|
|
|
def _flush_rrs_for_room(self, room_id: str) -> None:
|
|
queues = self._queues_awaiting_rr_flush_by_room.pop(room_id)
|
|
logger.debug("Flushing RRs in %s to %s", room_id, queues)
|
|
|
|
if not queues:
|
|
# no more RRs arrived for this room; we are done.
|
|
return
|
|
|
|
# schedule the next flush
|
|
self._schedule_rr_flush_for_room(room_id, len(queues))
|
|
|
|
for queue in queues:
|
|
queue.flush_read_receipts_for_room(room_id)
|
|
|
|
def send_presence_to_destinations(
|
|
self, states: Iterable[UserPresenceState], destinations: Iterable[str]
|
|
) -> None:
|
|
"""Send the given presence states to the given destinations.
|
|
destinations (list[str])
|
|
"""
|
|
|
|
if not states or not self.hs.config.server.use_presence:
|
|
# No-op if presence is disabled.
|
|
return
|
|
|
|
# Ensure we only send out presence states for local users.
|
|
for state in states:
|
|
assert self.is_mine_id(state.user_id)
|
|
|
|
for destination in destinations:
|
|
if destination == self.server_name:
|
|
continue
|
|
if not self._federation_shard_config.should_handle(
|
|
self._instance_name, destination
|
|
):
|
|
continue
|
|
|
|
self._get_per_destination_queue(destination).send_presence(
|
|
states, start_loop=False
|
|
)
|
|
|
|
self._destination_wakeup_queue.add_to_queue(destination)
|
|
|
|
def build_and_send_edu(
|
|
self,
|
|
destination: str,
|
|
edu_type: str,
|
|
content: JsonDict,
|
|
key: Optional[Hashable] = None,
|
|
) -> None:
|
|
"""Construct an Edu object, and queue it for sending
|
|
|
|
Args:
|
|
destination: name of server to send to
|
|
edu_type: type of EDU to send
|
|
content: content of EDU
|
|
key: clobbering key for this edu
|
|
"""
|
|
if destination == self.server_name:
|
|
logger.info("Not sending EDU to ourselves")
|
|
return
|
|
|
|
if not self._federation_shard_config.should_handle(
|
|
self._instance_name, destination
|
|
):
|
|
return
|
|
|
|
edu = Edu(
|
|
origin=self.server_name,
|
|
destination=destination,
|
|
edu_type=edu_type,
|
|
content=content,
|
|
)
|
|
|
|
self.send_edu(edu, key)
|
|
|
|
def send_edu(self, edu: Edu, key: Optional[Hashable]) -> None:
|
|
"""Queue an EDU for sending
|
|
|
|
Args:
|
|
edu: edu to send
|
|
key: clobbering key for this edu
|
|
"""
|
|
if not self._federation_shard_config.should_handle(
|
|
self._instance_name, edu.destination
|
|
):
|
|
return
|
|
|
|
queue = self._get_per_destination_queue(edu.destination)
|
|
if key:
|
|
queue.send_keyed_edu(edu, key)
|
|
else:
|
|
queue.send_edu(edu)
|
|
|
|
def send_device_messages(self, destination: str, immediate: bool = False) -> None:
|
|
if destination == self.server_name:
|
|
logger.warning("Not sending device update to ourselves")
|
|
return
|
|
|
|
if not self._federation_shard_config.should_handle(
|
|
self._instance_name, destination
|
|
):
|
|
return
|
|
|
|
if immediate:
|
|
self._get_per_destination_queue(destination).attempt_new_transaction()
|
|
else:
|
|
self._get_per_destination_queue(destination).mark_new_data()
|
|
self._destination_wakeup_queue.add_to_queue(destination)
|
|
|
|
def wake_destination(self, destination: str) -> None:
|
|
"""Called when we want to retry sending transactions to a remote.
|
|
|
|
This is mainly useful if the remote server has been down and we think it
|
|
might have come back.
|
|
"""
|
|
|
|
if destination == self.server_name:
|
|
logger.warning("Not waking up ourselves")
|
|
return
|
|
|
|
if not self._federation_shard_config.should_handle(
|
|
self._instance_name, destination
|
|
):
|
|
return
|
|
|
|
self._get_per_destination_queue(destination).attempt_new_transaction()
|
|
|
|
@staticmethod
|
|
def get_current_token() -> int:
|
|
# Dummy implementation for case where federation sender isn't offloaded
|
|
# to a worker.
|
|
return 0
|
|
|
|
def federation_ack(self, instance_name: str, token: int) -> None:
|
|
# It is not expected that this gets called on FederationSender.
|
|
raise NotImplementedError()
|
|
|
|
@staticmethod
|
|
async def get_replication_rows(
|
|
instance_name: str, from_token: int, to_token: int, target_row_count: int
|
|
) -> Tuple[List[Tuple[int, Tuple]], int, bool]:
|
|
# Dummy implementation for case where federation sender isn't offloaded
|
|
# to a worker.
|
|
return [], 0, False
|
|
|
|
async def _wake_destinations_needing_catchup(self) -> None:
|
|
"""
|
|
Wakes up destinations that need catch-up and are not currently being
|
|
backed off from.
|
|
|
|
In order to reduce load spikes, adds a delay between each destination.
|
|
"""
|
|
|
|
last_processed: Optional[str] = None
|
|
|
|
while True:
|
|
destinations_to_wake = (
|
|
await self.store.get_catch_up_outstanding_destinations(last_processed)
|
|
)
|
|
|
|
if not destinations_to_wake:
|
|
# finished waking all destinations!
|
|
self._catchup_after_startup_timer = None
|
|
break
|
|
|
|
last_processed = destinations_to_wake[-1]
|
|
|
|
destinations_to_wake = [
|
|
d
|
|
for d in destinations_to_wake
|
|
if self._federation_shard_config.should_handle(self._instance_name, d)
|
|
]
|
|
|
|
for destination in destinations_to_wake:
|
|
logger.info(
|
|
"Destination %s has outstanding catch-up, waking up.",
|
|
last_processed,
|
|
)
|
|
self.wake_destination(destination)
|
|
await self.clock.sleep(CATCH_UP_STARTUP_INTERVAL_SEC)
|