mirror of
https://git.anonymousland.org/anonymousland/synapse-product.git
synced 2024-10-01 08:25:44 -04:00
398 lines
15 KiB
Python
398 lines
15 KiB
Python
# -*- coding: utf-8 -*-
|
|
# Copyright 2014-2016 OpenMarket Ltd
|
|
# 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 datetime
|
|
import logging
|
|
|
|
from prometheus_client import Counter
|
|
|
|
from twisted.internet import defer
|
|
|
|
from synapse.api.errors import (
|
|
FederationDeniedError,
|
|
HttpResponseException,
|
|
RequestSendFailed,
|
|
)
|
|
from synapse.events import EventBase
|
|
from synapse.federation.units import Edu
|
|
from synapse.handlers.presence import format_user_presence_state
|
|
from synapse.metrics import sent_transactions_counter
|
|
from synapse.metrics.background_process_metrics import run_as_background_process
|
|
from synapse.storage.presence import UserPresenceState
|
|
from synapse.util.retryutils import NotRetryingDestination, get_retry_limiter
|
|
|
|
# This is defined in the Matrix spec and enforced by the receiver.
|
|
MAX_EDUS_PER_TRANSACTION = 100
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
sent_edus_counter = Counter(
|
|
"synapse_federation_client_sent_edus", "Total number of EDUs successfully sent"
|
|
)
|
|
|
|
sent_edus_by_type = Counter(
|
|
"synapse_federation_client_sent_edus_by_type",
|
|
"Number of sent EDUs successfully sent, by event type",
|
|
["type"],
|
|
)
|
|
|
|
|
|
class PerDestinationQueue(object):
|
|
"""
|
|
Manages the per-destination transmission queues.
|
|
|
|
Args:
|
|
hs (synapse.HomeServer):
|
|
transaction_sender (TransactionManager):
|
|
destination (str): the server_name of the destination that we are managing
|
|
transmission for.
|
|
"""
|
|
|
|
def __init__(self, hs, transaction_manager, destination):
|
|
self._server_name = hs.hostname
|
|
self._clock = hs.get_clock()
|
|
self._store = hs.get_datastore()
|
|
self._transaction_manager = transaction_manager
|
|
|
|
self._destination = destination
|
|
self.transmission_loop_running = False
|
|
|
|
# a list of tuples of (pending pdu, order)
|
|
self._pending_pdus = [] # type: list[tuple[EventBase, int]]
|
|
self._pending_edus = [] # type: list[Edu]
|
|
|
|
# Pending EDUs by their "key". Keyed EDUs are EDUs that get clobbered
|
|
# based on their key (e.g. typing events by room_id)
|
|
# Map of (edu_type, key) -> Edu
|
|
self._pending_edus_keyed = {} # type: dict[tuple[str, str], Edu]
|
|
|
|
# Map of user_id -> UserPresenceState of pending presence to be sent to this
|
|
# destination
|
|
self._pending_presence = {} # type: dict[str, UserPresenceState]
|
|
|
|
# room_id -> receipt_type -> user_id -> receipt_dict
|
|
self._pending_rrs = {}
|
|
self._rrs_pending_flush = False
|
|
|
|
# stream_id of last successfully sent to-device message.
|
|
# NB: may be a long or an int.
|
|
self._last_device_stream_id = 0
|
|
|
|
# stream_id of last successfully sent device list update.
|
|
self._last_device_list_stream_id = 0
|
|
|
|
def __str__(self):
|
|
return "PerDestinationQueue[%s]" % self._destination
|
|
|
|
def pending_pdu_count(self):
|
|
return len(self._pending_pdus)
|
|
|
|
def pending_edu_count(self):
|
|
return (
|
|
len(self._pending_edus)
|
|
+ len(self._pending_presence)
|
|
+ len(self._pending_edus_keyed)
|
|
)
|
|
|
|
def send_pdu(self, pdu, order):
|
|
"""Add a PDU to the queue, and start the transmission loop if neccessary
|
|
|
|
Args:
|
|
pdu (EventBase): pdu to send
|
|
order (int):
|
|
"""
|
|
self._pending_pdus.append((pdu, order))
|
|
self.attempt_new_transaction()
|
|
|
|
def send_presence(self, states):
|
|
"""Add presence updates to the queue. Start the transmission loop if neccessary.
|
|
|
|
Args:
|
|
states (iterable[UserPresenceState]): presence to send
|
|
"""
|
|
self._pending_presence.update({state.user_id: state for state in states})
|
|
self.attempt_new_transaction()
|
|
|
|
def queue_read_receipt(self, receipt):
|
|
"""Add a RR to the list to be sent. Doesn't start the transmission loop yet
|
|
(see flush_read_receipts_for_room)
|
|
|
|
Args:
|
|
receipt (synapse.api.receipt_info.ReceiptInfo): receipt to be queued
|
|
"""
|
|
self._pending_rrs.setdefault(receipt.room_id, {}).setdefault(
|
|
receipt.receipt_type, {}
|
|
)[receipt.user_id] = {"event_ids": receipt.event_ids, "data": receipt.data}
|
|
|
|
def flush_read_receipts_for_room(self, room_id):
|
|
# if we don't have any read-receipts for this room, it may be that we've already
|
|
# sent them out, so we don't need to flush.
|
|
if room_id not in self._pending_rrs:
|
|
return
|
|
self._rrs_pending_flush = True
|
|
self.attempt_new_transaction()
|
|
|
|
def send_keyed_edu(self, edu, key):
|
|
self._pending_edus_keyed[(edu.edu_type, key)] = edu
|
|
self.attempt_new_transaction()
|
|
|
|
def send_edu(self, edu):
|
|
self._pending_edus.append(edu)
|
|
self.attempt_new_transaction()
|
|
|
|
def attempt_new_transaction(self):
|
|
"""Try to start a new transaction to this destination
|
|
|
|
If there is already a transaction in progress to this destination,
|
|
returns immediately. Otherwise kicks off the process of sending a
|
|
transaction in the background.
|
|
"""
|
|
# list of (pending_pdu, deferred, order)
|
|
if self.transmission_loop_running:
|
|
# XXX: this can get stuck on by a never-ending
|
|
# request at which point pending_pdus just keeps growing.
|
|
# we need application-layer timeouts of some flavour of these
|
|
# requests
|
|
logger.debug("TX [%s] Transaction already in progress", self._destination)
|
|
return
|
|
|
|
logger.debug("TX [%s] Starting transaction loop", self._destination)
|
|
|
|
run_as_background_process(
|
|
"federation_transaction_transmission_loop",
|
|
self._transaction_transmission_loop,
|
|
)
|
|
|
|
@defer.inlineCallbacks
|
|
def _transaction_transmission_loop(self):
|
|
pending_pdus = []
|
|
try:
|
|
self.transmission_loop_running = True
|
|
|
|
# This will throw if we wouldn't retry. We do this here so we fail
|
|
# quickly, but we will later check this again in the http client,
|
|
# hence why we throw the result away.
|
|
yield get_retry_limiter(self._destination, self._clock, self._store)
|
|
|
|
pending_pdus = []
|
|
while True:
|
|
# We have to keep 2 free slots for presence and rr_edus
|
|
limit = MAX_EDUS_PER_TRANSACTION - 2
|
|
|
|
device_update_edus, dev_list_id = yield self._get_device_update_edus(
|
|
limit
|
|
)
|
|
|
|
limit -= len(device_update_edus)
|
|
|
|
(
|
|
to_device_edus,
|
|
device_stream_id,
|
|
) = yield self._get_to_device_message_edus(limit)
|
|
|
|
pending_edus = device_update_edus + to_device_edus
|
|
|
|
# BEGIN CRITICAL SECTION
|
|
#
|
|
# In order to avoid a race condition, we need to make sure that
|
|
# the following code (from popping the queues up to the point
|
|
# where we decide if we actually have any pending messages) is
|
|
# atomic - otherwise new PDUs or EDUs might arrive in the
|
|
# meantime, but not get sent because we hold the
|
|
# transmission_loop_running flag.
|
|
|
|
pending_pdus = self._pending_pdus
|
|
|
|
# We can only include at most 50 PDUs per transactions
|
|
pending_pdus, self._pending_pdus = pending_pdus[:50], pending_pdus[50:]
|
|
|
|
pending_edus.extend(self._get_rr_edus(force_flush=False))
|
|
pending_presence = self._pending_presence
|
|
self._pending_presence = {}
|
|
if pending_presence:
|
|
pending_edus.append(
|
|
Edu(
|
|
origin=self._server_name,
|
|
destination=self._destination,
|
|
edu_type="m.presence",
|
|
content={
|
|
"push": [
|
|
format_user_presence_state(
|
|
presence, self._clock.time_msec()
|
|
)
|
|
for presence in pending_presence.values()
|
|
]
|
|
},
|
|
)
|
|
)
|
|
|
|
pending_edus.extend(
|
|
self._pop_pending_edus(MAX_EDUS_PER_TRANSACTION - len(pending_edus))
|
|
)
|
|
while (
|
|
len(pending_edus) < MAX_EDUS_PER_TRANSACTION
|
|
and self._pending_edus_keyed
|
|
):
|
|
_, val = self._pending_edus_keyed.popitem()
|
|
pending_edus.append(val)
|
|
|
|
if pending_pdus:
|
|
logger.debug(
|
|
"TX [%s] len(pending_pdus_by_dest[dest]) = %d",
|
|
self._destination,
|
|
len(pending_pdus),
|
|
)
|
|
|
|
if not pending_pdus and not pending_edus:
|
|
logger.debug("TX [%s] Nothing to send", self._destination)
|
|
self._last_device_stream_id = device_stream_id
|
|
return
|
|
|
|
# if we've decided to send a transaction anyway, and we have room, we
|
|
# may as well send any pending RRs
|
|
if len(pending_edus) < MAX_EDUS_PER_TRANSACTION:
|
|
pending_edus.extend(self._get_rr_edus(force_flush=True))
|
|
|
|
# END CRITICAL SECTION
|
|
|
|
success = yield self._transaction_manager.send_new_transaction(
|
|
self._destination, pending_pdus, pending_edus
|
|
)
|
|
if success:
|
|
sent_transactions_counter.inc()
|
|
sent_edus_counter.inc(len(pending_edus))
|
|
for edu in pending_edus:
|
|
sent_edus_by_type.labels(edu.edu_type).inc()
|
|
# Remove the acknowledged device messages from the database
|
|
# Only bother if we actually sent some device messages
|
|
if to_device_edus:
|
|
yield self._store.delete_device_msgs_for_remote(
|
|
self._destination, device_stream_id
|
|
)
|
|
|
|
# also mark the device updates as sent
|
|
if device_update_edus:
|
|
logger.info(
|
|
"Marking as sent %r %r", self._destination, dev_list_id
|
|
)
|
|
yield self._store.mark_as_sent_devices_by_remote(
|
|
self._destination, dev_list_id
|
|
)
|
|
|
|
self._last_device_stream_id = device_stream_id
|
|
self._last_device_list_stream_id = dev_list_id
|
|
else:
|
|
break
|
|
except NotRetryingDestination as e:
|
|
logger.debug(
|
|
"TX [%s] not ready for retry yet (next retry at %s) - "
|
|
"dropping transaction for now",
|
|
self._destination,
|
|
datetime.datetime.fromtimestamp(
|
|
(e.retry_last_ts + e.retry_interval) / 1000.0
|
|
),
|
|
)
|
|
except FederationDeniedError as e:
|
|
logger.info(e)
|
|
except HttpResponseException as e:
|
|
logger.warning(
|
|
"TX [%s] Received %d response to transaction: %s",
|
|
self._destination,
|
|
e.code,
|
|
e,
|
|
)
|
|
except RequestSendFailed as e:
|
|
logger.warning(
|
|
"TX [%s] Failed to send transaction: %s", self._destination, e
|
|
)
|
|
|
|
for p, _ in pending_pdus:
|
|
logger.info(
|
|
"Failed to send event %s to %s", p.event_id, self._destination
|
|
)
|
|
except Exception:
|
|
logger.exception("TX [%s] Failed to send transaction", self._destination)
|
|
for p, _ in pending_pdus:
|
|
logger.info(
|
|
"Failed to send event %s to %s", p.event_id, self._destination
|
|
)
|
|
finally:
|
|
# We want to be *very* sure we clear this after we stop processing
|
|
self.transmission_loop_running = False
|
|
|
|
def _get_rr_edus(self, force_flush):
|
|
if not self._pending_rrs:
|
|
return
|
|
if not force_flush and not self._rrs_pending_flush:
|
|
# not yet time for this lot
|
|
return
|
|
|
|
edu = Edu(
|
|
origin=self._server_name,
|
|
destination=self._destination,
|
|
edu_type="m.receipt",
|
|
content=self._pending_rrs,
|
|
)
|
|
self._pending_rrs = {}
|
|
self._rrs_pending_flush = False
|
|
yield edu
|
|
|
|
def _pop_pending_edus(self, limit):
|
|
pending_edus = self._pending_edus
|
|
pending_edus, self._pending_edus = pending_edus[:limit], pending_edus[limit:]
|
|
return pending_edus
|
|
|
|
@defer.inlineCallbacks
|
|
def _get_device_update_edus(self, limit):
|
|
last_device_list = self._last_device_list_stream_id
|
|
|
|
# Retrieve list of new device updates to send to the destination
|
|
now_stream_id, results = yield self._store.get_devices_by_remote(
|
|
self._destination, last_device_list, limit=limit
|
|
)
|
|
edus = [
|
|
Edu(
|
|
origin=self._server_name,
|
|
destination=self._destination,
|
|
edu_type="m.device_list_update",
|
|
content=content,
|
|
)
|
|
for content in results
|
|
]
|
|
|
|
assert len(edus) <= limit, "get_devices_by_remote returned too many EDUs"
|
|
|
|
return (edus, now_stream_id)
|
|
|
|
@defer.inlineCallbacks
|
|
def _get_to_device_message_edus(self, limit):
|
|
last_device_stream_id = self._last_device_stream_id
|
|
to_device_stream_id = self._store.get_to_device_stream_token()
|
|
contents, stream_id = yield self._store.get_new_device_msgs_for_remote(
|
|
self._destination, last_device_stream_id, to_device_stream_id, limit
|
|
)
|
|
edus = [
|
|
Edu(
|
|
origin=self._server_name,
|
|
destination=self._destination,
|
|
edu_type="m.direct_to_device",
|
|
content=content,
|
|
)
|
|
for content in contents
|
|
]
|
|
|
|
return (edus, stream_id)
|