343 lines
		
	
	
		
			12 KiB
		
	
	
	
		
			Python
		
	
	
			
		
		
	
	
			343 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 synapse
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from synapse.server import HomeServer
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from synapse.config._base import ConfigError
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from synapse.config.logger import setup_logging
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from synapse.config.homeserver import HomeServerConfig
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from synapse.crypto import context_factory
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from synapse.http.site import SynapseSite
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from synapse.federation import send_queue
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from synapse.federation.units import Edu
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from synapse.metrics.resource import MetricsResource, METRICS_PREFIX
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from synapse.replication.slave.storage.deviceinbox import SlavedDeviceInboxStore
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from synapse.replication.slave.storage.events import SlavedEventStore
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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 TransactionStore
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from synapse.replication.slave.storage.devices import SlavedDeviceStore
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from synapse.storage.engines import create_engine
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from synapse.storage.presence import UserPresenceState
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from synapse.util.async import sleep
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from synapse.util.httpresourcetree import create_resource_tree
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from synapse.util.logcontext import LoggingContext, PreserveLoggingContext
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from synapse.util.manhole import manhole
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from synapse.util.rlimit import change_resource_limit
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from synapse.util.versionstring import get_version_string
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from synapse import events
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from twisted.internet import reactor, defer
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from twisted.web.resource import Resource
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from daemonize import Daemonize
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import sys
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import logging
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import gc
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import ujson as json
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logger = logging.getLogger("synapse.app.appservice")
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class FederationSenderSlaveStore(
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    SlavedDeviceInboxStore, TransactionStore, SlavedReceiptsStore, SlavedEventStore,
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    SlavedRegistrationStore, SlavedDeviceStore,
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):
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    pass
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class FederationSenderServer(HomeServer):
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    def get_db_conn(self, run_new_connection=True):
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        # Any param beginning with cp_ is a parameter for adbapi, and should
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        # not be passed to the database engine.
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        db_params = {
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            k: v for k, v in self.db_config.get("args", {}).items()
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            if not k.startswith("cp_")
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        }
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        db_conn = self.database_engine.module.connect(**db_params)
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        if run_new_connection:
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            self.database_engine.on_new_connection(db_conn)
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        return db_conn
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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(self)
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        root_resource = create_resource_tree(resources, Resource())
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        for address in bind_addresses:
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            reactor.listenTCP(
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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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                ),
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                interface=address
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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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                bind_addresses = listener["bind_addresses"]
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                for address in bind_addresses:
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                    reactor.listenTCP(
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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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                        interface=address
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                    )
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            else:
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                logger.warn("Unrecognized listener type: %s", listener["type"])
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    @defer.inlineCallbacks
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    def replicate(self):
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        http_client = self.get_simple_http_client()
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        store = self.get_datastore()
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        replication_url = self.config.worker_replication_url
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        send_handler = FederationSenderHandler(self)
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        send_handler.on_start()
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        while True:
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            try:
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                args = store.stream_positions()
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                args.update((yield send_handler.stream_positions()))
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                args["timeout"] = 30000
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                result = yield http_client.get_json(replication_url, args=args)
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                yield store.process_replication(result)
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                yield send_handler.process_replication(result)
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            except:
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                logger.exception("Error replicating from %r", replication_url)
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                yield sleep(30)
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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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    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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        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 run():
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        # make sure that we run the reactor with the sentinel log context,
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        # otherwise other PreserveLoggingContext instances will get confused
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        # and complain when they see the logcontext arbitrarily swapping
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        # between the sentinel and `run` logcontexts.
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        with PreserveLoggingContext():
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            logger.info("Running")
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            change_resource_limit(config.soft_file_limit)
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            if config.gc_thresholds:
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                gc.set_threshold(*config.gc_thresholds)
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            reactor.run()
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    def start():
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        ps.replicate()
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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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    if config.worker_daemonize:
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        daemon = Daemonize(
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            app="synapse-federation-sender",
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            pid=config.worker_pid_file,
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            action=run,
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            auto_close_fds=False,
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            verbose=True,
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            logger=logger,
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        )
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        daemon.start()
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    else:
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        run()
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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):
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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._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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    @defer.inlineCallbacks
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    def stream_positions(self):
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        stream_id = yield self.store.get_federation_out_pos("federation")
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        defer.returnValue({
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            "federation": stream_id,
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            # Ack stuff we've "processed", this should only be called from
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            # one process.
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            "federation_ack": stream_id,
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        })
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    @defer.inlineCallbacks
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    def process_replication(self, result):
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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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        fed_stream = result.get("federation")
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        if fed_stream:
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            latest_id = int(fed_stream["position"])
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            # The federation stream containis a bunch of different types of
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            # rows that need to be handled differently. We parse the rows, put
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            # them into the appropriate collection and then send them off.
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            presence_to_send = {}
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            keyed_edus = {}
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            edus = {}
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            failures = {}
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            device_destinations = set()
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            # Parse the rows in the stream
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            for row in fed_stream["rows"]:
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                position, typ, content_js = row
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                content = json.loads(content_js)
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                if typ == send_queue.PRESENCE_TYPE:
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                    destination = content["destination"]
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                    state = UserPresenceState.from_dict(content["state"])
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                    presence_to_send.setdefault(destination, []).append(state)
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                elif typ == send_queue.KEYED_EDU_TYPE:
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                    key = content["key"]
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                    edu = Edu(**content["edu"])
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                    keyed_edus.setdefault(
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                        edu.destination, {}
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                    )[(edu.destination, tuple(key))] = edu
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                elif typ == send_queue.EDU_TYPE:
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                    edu = Edu(**content)
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                    edus.setdefault(edu.destination, []).append(edu)
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                elif typ == send_queue.FAILURE_TYPE:
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                    destination = content["destination"]
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                    failure = content["failure"]
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                    failures.setdefault(destination, []).append(failure)
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                elif typ == send_queue.DEVICE_MESSAGE_TYPE:
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                    device_destinations.add(content["destination"])
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                else:
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                    raise Exception("Unrecognised federation type: %r", typ)
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            # We've finished collecting, send everything off
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            for destination, states in presence_to_send.items():
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                self.federation_sender.send_presence(destination, states)
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            for destination, edu_map in keyed_edus.items():
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                for key, edu in edu_map.items():
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                    self.federation_sender.send_edu(
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                        edu.destination, edu.edu_type, edu.content, key=key,
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                    )
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            for destination, edu_list in edus.items():
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                for edu in edu_list:
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                    self.federation_sender.send_edu(
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                        edu.destination, edu.edu_type, edu.content, key=None,
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                    )
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            for destination, failure_list in failures.items():
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                for failure in failure_list:
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                    self.federation_sender.send_failure(destination, failure)
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            for destination in device_destinations:
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                self.federation_sender.send_device_messages(destination)
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            # Record where we are in the stream.
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            yield self.store.update_federation_out_pos(
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                "federation", latest_id
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            )
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        # We also need to poke the federation sender when new events happen
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        event_stream = result.get("events")
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        if event_stream:
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            latest_pos = event_stream["position"]
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            self.federation_sender.notify_new_events(latest_pos)
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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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