mirror of
https://git.anonymousland.org/anonymousland/synapse.git
synced 2024-10-01 11:49:51 -04:00
6b9e1014cf
We were sending device updates down both the federation stream and device streams. This mean there was a race if the federation sender worker processed the federation stream first, as when the sender checked if there were new device updates the slaved ID generator hadn't been updated with the new stream IDs and so returned nothing. This situation is correctly handled by events/receipts/etc by not sending updates down the federation stream and instead having the federation sender worker listen on the other streams and poke the transaction queues as appropriate.
322 lines
12 KiB
Python
322 lines
12 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# Copyright 2016 OpenMarket Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import logging
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import sys
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from twisted.internet import defer, reactor
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from twisted.web.resource import NoResource
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import synapse
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from synapse import events
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from synapse.app import _base
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from synapse.config._base import ConfigError
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from synapse.config.homeserver import HomeServerConfig
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from synapse.config.logger import setup_logging
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from synapse.federation import send_queue
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from synapse.http.site import SynapseSite
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from synapse.logging.context import LoggingContext, run_in_background
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from synapse.metrics import METRICS_PREFIX, MetricsResource, RegistryProxy
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from synapse.metrics.background_process_metrics import run_as_background_process
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from synapse.replication.slave.storage.deviceinbox import SlavedDeviceInboxStore
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from synapse.replication.slave.storage.devices import SlavedDeviceStore
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from synapse.replication.slave.storage.events import SlavedEventStore
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from synapse.replication.slave.storage.presence import SlavedPresenceStore
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from synapse.replication.slave.storage.receipts import SlavedReceiptsStore
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from synapse.replication.slave.storage.registration import SlavedRegistrationStore
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from synapse.replication.slave.storage.transactions import SlavedTransactionStore
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from synapse.replication.tcp.client import ReplicationClientHandler
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from synapse.replication.tcp.streams._base import (
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DeviceListsStream,
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ReceiptsStream,
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ToDeviceStream,
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)
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from synapse.server import HomeServer
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from synapse.storage.database import Database
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from synapse.types import ReadReceipt
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from synapse.util.async_helpers import Linearizer
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from synapse.util.httpresourcetree import create_resource_tree
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from synapse.util.manhole import manhole
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from synapse.util.versionstring import get_version_string
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logger = logging.getLogger("synapse.app.federation_sender")
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class FederationSenderSlaveStore(
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SlavedDeviceInboxStore,
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SlavedTransactionStore,
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SlavedReceiptsStore,
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SlavedEventStore,
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SlavedRegistrationStore,
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SlavedDeviceStore,
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SlavedPresenceStore,
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):
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def __init__(self, database: Database, db_conn, hs):
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super(FederationSenderSlaveStore, self).__init__(database, db_conn, hs)
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# We pull out the current federation stream position now so that we
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# always have a known value for the federation position in memory so
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# that we don't have to bounce via a deferred once when we start the
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# replication streams.
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self.federation_out_pos_startup = self._get_federation_out_pos(db_conn)
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def _get_federation_out_pos(self, db_conn):
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sql = "SELECT stream_id FROM federation_stream_position WHERE type = ?"
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sql = self.database_engine.convert_param_style(sql)
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txn = db_conn.cursor()
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txn.execute(sql, ("federation",))
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rows = txn.fetchall()
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txn.close()
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return rows[0][0] if rows else -1
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class FederationSenderServer(HomeServer):
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DATASTORE_CLASS = FederationSenderSlaveStore
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def _listen_http(self, listener_config):
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port = listener_config["port"]
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bind_addresses = listener_config["bind_addresses"]
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site_tag = listener_config.get("tag", port)
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resources = {}
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for res in listener_config["resources"]:
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for name in res["names"]:
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if name == "metrics":
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resources[METRICS_PREFIX] = MetricsResource(RegistryProxy)
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root_resource = create_resource_tree(resources, NoResource())
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_base.listen_tcp(
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bind_addresses,
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port,
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SynapseSite(
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"synapse.access.http.%s" % (site_tag,),
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site_tag,
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listener_config,
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root_resource,
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self.version_string,
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),
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)
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logger.info("Synapse federation_sender now listening on port %d", port)
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def start_listening(self, listeners):
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for listener in listeners:
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if listener["type"] == "http":
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self._listen_http(listener)
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elif listener["type"] == "manhole":
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_base.listen_tcp(
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listener["bind_addresses"],
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listener["port"],
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manhole(
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username="matrix", password="rabbithole", globals={"hs": self}
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),
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)
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elif listener["type"] == "metrics":
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if not self.get_config().enable_metrics:
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logger.warning(
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(
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"Metrics listener configured, but "
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"enable_metrics is not True!"
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)
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)
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else:
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_base.listen_metrics(listener["bind_addresses"], listener["port"])
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else:
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logger.warning("Unrecognized listener type: %s", listener["type"])
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self.get_tcp_replication().start_replication(self)
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def build_tcp_replication(self):
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return FederationSenderReplicationHandler(self)
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class FederationSenderReplicationHandler(ReplicationClientHandler):
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def __init__(self, hs):
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super(FederationSenderReplicationHandler, self).__init__(hs.get_datastore())
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self.send_handler = FederationSenderHandler(hs, self)
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async def on_rdata(self, stream_name, token, rows):
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await super(FederationSenderReplicationHandler, self).on_rdata(
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stream_name, token, rows
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)
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self.send_handler.process_replication_rows(stream_name, token, rows)
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def get_streams_to_replicate(self):
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args = super(
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FederationSenderReplicationHandler, self
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).get_streams_to_replicate()
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args.update(self.send_handler.stream_positions())
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return args
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def on_remote_server_up(self, server: str):
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"""Called when get a new REMOTE_SERVER_UP command."""
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# Let's wake up the transaction queue for the server in case we have
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# pending stuff to send to it.
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self.send_handler.wake_destination(server)
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def start(config_options):
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try:
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config = HomeServerConfig.load_config(
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"Synapse federation sender", config_options
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)
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except ConfigError as e:
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sys.stderr.write("\n" + str(e) + "\n")
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sys.exit(1)
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assert config.worker_app == "synapse.app.federation_sender"
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events.USE_FROZEN_DICTS = config.use_frozen_dicts
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if config.send_federation:
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sys.stderr.write(
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"\nThe send_federation must be disabled in the main synapse process"
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"\nbefore they can be run in a separate worker."
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"\nPlease add ``send_federation: false`` to the main config"
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"\n"
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)
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sys.exit(1)
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# Force the pushers to start since they will be disabled in the main config
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config.send_federation = True
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ss = FederationSenderServer(
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config.server_name,
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config=config,
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version_string="Synapse/" + get_version_string(synapse),
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)
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setup_logging(ss, config, use_worker_options=True)
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ss.setup()
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reactor.addSystemEventTrigger(
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"before", "startup", _base.start, ss, config.worker_listeners
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)
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_base.start_worker_reactor("synapse-federation-sender", config)
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class FederationSenderHandler(object):
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"""Processes the replication stream and forwards the appropriate entries
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to the federation sender.
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"""
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def __init__(self, hs: FederationSenderServer, replication_client):
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self.store = hs.get_datastore()
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self._is_mine_id = hs.is_mine_id
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self.federation_sender = hs.get_federation_sender()
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self.replication_client = replication_client
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self.federation_position = self.store.federation_out_pos_startup
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self._fed_position_linearizer = Linearizer(name="_fed_position_linearizer")
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self._last_ack = self.federation_position
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self._room_serials = {}
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self._room_typing = {}
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def on_start(self):
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# There may be some events that are persisted but haven't been sent,
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# so send them now.
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self.federation_sender.notify_new_events(
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self.store.get_room_max_stream_ordering()
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)
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def wake_destination(self, server: str):
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self.federation_sender.wake_destination(server)
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def stream_positions(self):
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return {"federation": self.federation_position}
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def process_replication_rows(self, stream_name, token, rows):
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# The federation stream contains things that we want to send out, e.g.
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# presence, typing, etc.
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if stream_name == "federation":
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send_queue.process_rows_for_federation(self.federation_sender, rows)
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run_in_background(self.update_token, token)
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# We also need to poke the federation sender when new events happen
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elif stream_name == "events":
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self.federation_sender.notify_new_events(token)
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# ... and when new receipts happen
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elif stream_name == ReceiptsStream.NAME:
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run_as_background_process(
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"process_receipts_for_federation", self._on_new_receipts, rows
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)
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# ... as well as device updates and messages
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elif stream_name == DeviceListsStream.NAME:
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hosts = set(row.destination for row in rows)
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for host in hosts:
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self.federation_sender.send_device_messages(host)
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elif stream_name == ToDeviceStream.NAME:
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# The to_device stream includes stuff to be pushed to both local
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# clients and remote servers, so we ignore entities that start with
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# '@' (since they'll be local users rather than destinations).
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hosts = set(row.entity for row in rows if not row.entity.startswith("@"))
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for host in hosts:
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self.federation_sender.send_device_messages(host)
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@defer.inlineCallbacks
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def _on_new_receipts(self, rows):
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"""
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Args:
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rows (iterable[synapse.replication.tcp.streams.ReceiptsStreamRow]):
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new receipts to be processed
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"""
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for receipt in rows:
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# we only want to send on receipts for our own users
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if not self._is_mine_id(receipt.user_id):
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continue
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receipt_info = ReadReceipt(
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receipt.room_id,
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receipt.receipt_type,
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receipt.user_id,
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[receipt.event_id],
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receipt.data,
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)
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yield self.federation_sender.send_read_receipt(receipt_info)
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@defer.inlineCallbacks
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def update_token(self, token):
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try:
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self.federation_position = token
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# We linearize here to ensure we don't have races updating the token
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with (yield self._fed_position_linearizer.queue(None)):
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if self._last_ack < self.federation_position:
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yield self.store.update_federation_out_pos(
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"federation", self.federation_position
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)
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# We ACK this token over replication so that the master can drop
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# its in memory queues
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self.replication_client.send_federation_ack(
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self.federation_position
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)
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self._last_ack = self.federation_position
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except Exception:
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logger.exception("Error updating federation stream position")
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if __name__ == "__main__":
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with LoggingContext("main"):
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start(sys.argv[1:])
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