mirror of
https://git.anonymousland.org/anonymousland/synapse-product.git
synced 2024-10-01 08:25:44 -04:00
0e8d78f6aa
Run the handlers for replication commands as background processes. This should improve the visibility in our metrics, and reduce the number of "running db transaction from sentinel context" warnings. Ideally it means converting the things that fire off deferreds into the night into things that actually return a Deferred when they are done. I've made a bit of a stab at this, but it will probably be leaky.
274 lines
10 KiB
Python
274 lines
10 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.crypto import context_factory
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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.metrics import RegistryProxy
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from synapse.metrics.resource import METRICS_PREFIX, MetricsResource
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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.server import HomeServer
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from synapse.storage.engines import create_engine
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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.logcontext import LoggingContext, run_in_background
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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, SlavedTransactionStore, SlavedReceiptsStore, SlavedEventStore,
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SlavedRegistrationStore, SlavedDeviceStore, SlavedPresenceStore,
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):
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def __init__(self, db_conn, hs):
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super(FederationSenderSlaveStore, self).__init__(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 = (
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"SELECT stream_id FROM federation_stream_position"
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" WHERE type = ?"
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)
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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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def setup(self):
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logger.info("Setting up.")
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self.datastore = FederationSenderSlaveStore(self.get_db_conn(), self)
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logger.info("Finished setting up.")
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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",
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password="rabbithole",
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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.warn(("Metrics listener configured, but "
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"enable_metrics is not True!"))
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else:
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_base.listen_metrics(listener["bind_addresses"],
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listener["port"])
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else:
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logger.warn("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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@defer.inlineCallbacks
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def on_rdata(self, stream_name, token, rows):
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yield 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(FederationSenderReplicationHandler, self).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 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" + e.message + "\n")
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sys.exit(1)
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assert config.worker_app == "synapse.app.federation_sender"
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setup_logging(config, use_worker_options=True)
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events.USE_FROZEN_DICTS = config.use_frozen_dicts
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database_engine = create_engine(config.database_config)
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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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tls_server_context_factory = context_factory.ServerContextFactory(config)
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tls_client_options_factory = context_factory.ClientTLSOptionsFactory(config)
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ps = FederationSenderServer(
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config.server_name,
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db_config=config.database_config,
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tls_server_context_factory=tls_server_context_factory,
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tls_client_options_factory=tls_client_options_factory,
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config=config,
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version_string="Synapse/" + get_version_string(synapse),
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database_engine=database_engine,
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)
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ps.setup()
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ps.start_listening(config.worker_listeners)
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def start():
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ps.get_datastore().start_profiling()
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ps.get_state_handler().start_caching()
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reactor.callWhenRunning(start)
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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, replication_client):
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self.store = hs.get_datastore()
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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 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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@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(self.federation_position)
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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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