#!/usr/bin/env python # -*- coding: utf-8 -*- # Copyright 2016 OpenMarket 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 synapse from synapse.api.constants import EventTypes, PresenceState from synapse.config._base import ConfigError from synapse.config.database import DatabaseConfig from synapse.config.logger import LoggingConfig from synapse.config.appservice import AppServiceConfig from synapse.events import FrozenEvent from synapse.handlers.presence import PresenceHandler from synapse.http.site import SynapseSite from synapse.http.server import JsonResource from synapse.metrics.resource import MetricsResource, METRICS_PREFIX from synapse.rest.client.v2_alpha import sync from synapse.replication.slave.storage._base import BaseSlavedStore from synapse.replication.slave.storage.events import SlavedEventStore from synapse.replication.slave.storage.receipts import SlavedReceiptsStore from synapse.replication.slave.storage.account_data import SlavedAccountDataStore from synapse.replication.slave.storage.appservice import SlavedApplicationServiceStore from synapse.replication.slave.storage.registration import SlavedRegistrationStore from synapse.replication.slave.storage.filtering import SlavedFilteringStore from synapse.replication.slave.storage.push_rule import SlavedPushRuleStore from synapse.replication.slave.storage.presence import SlavedPresenceStore from synapse.server import HomeServer from synapse.storage.client_ips import ClientIpStore from synapse.storage.engines import create_engine from synapse.storage.presence import PresenceStore, UserPresenceState from synapse.storage.roommember import RoomMemberStore from synapse.util.async import sleep from synapse.util.httpresourcetree import create_resource_tree from synapse.util.logcontext import LoggingContext, preserve_fn from synapse.util.manhole import manhole from synapse.util.rlimit import change_resource_limit from synapse.util.stringutils import random_string from synapse.util.versionstring import get_version_string from twisted.internet import reactor, defer from twisted.web.resource import Resource from daemonize import Daemonize import sys import logging import contextlib import gc import ujson as json logger = logging.getLogger("synapse.app.synchrotron") class SynchrotronConfig(DatabaseConfig, LoggingConfig, AppServiceConfig): def read_config(self, config): self.replication_url = config["replication_url"] self.server_name = config["server_name"] self.use_insecure_ssl_client_just_for_testing_do_not_use = config.get( "use_insecure_ssl_client_just_for_testing_do_not_use", False ) self.user_agent_suffix = None self.listeners = config["listeners"] self.soft_file_limit = config.get("soft_file_limit") self.daemonize = config.get("daemonize") self.pid_file = self.abspath(config.get("pid_file")) self.macaroon_secret_key = config["macaroon_secret_key"] self.expire_access_token = config.get("expire_access_token", False) def default_config(self, server_name, **kwargs): pid_file = self.abspath("synchroton.pid") return """\ # Slave configuration # The replication listener on the synapse to talk to. #replication_url: https://localhost:{replication_port}/_synapse/replication server_name: "%(server_name)s" listeners: # Enable a /sync listener on the synchrontron #- type: http # port: {http_port} # bind_address: "" # Enable a ssh manhole listener on the synchrotron # - type: manhole # port: {manhole_port} # bind_address: 127.0.0.1 # Enable a metric listener on the synchrotron # - type: http # port: {metrics_port} # bind_address: 127.0.0.1 # resources: # - names: ["metrics"] # compress: False report_stats: False daemonize: False pid_file: %(pid_file)s """ % locals() class SynchrotronSlavedStore( SlavedPushRuleStore, SlavedEventStore, SlavedReceiptsStore, SlavedAccountDataStore, SlavedApplicationServiceStore, SlavedRegistrationStore, SlavedFilteringStore, SlavedPresenceStore, BaseSlavedStore, ClientIpStore, # After BaseSlavedStore because the constructor is different ): # XXX: This is a bit broken because we don't persist forgotten rooms # in a way that they can be streamed. This means that we don't have a # way to invalidate the forgotten rooms cache correctly. # For now we expire the cache every 10 minutes. BROKEN_CACHE_EXPIRY_MS = 60 * 60 * 1000 who_forgot_in_room = ( RoomMemberStore.__dict__["who_forgot_in_room"] ) # XXX: This is a bit broken because we don't persist the accepted list in a # way that can be replicated. This means that we don't have a way to # invalidate the cache correctly. get_presence_list_accepted = PresenceStore.__dict__[ "get_presence_list_accepted" ] UPDATE_SYNCING_USERS_MS = 10 * 1000 class SynchrotronPresence(object): def __init__(self, hs): self.http_client = hs.get_simple_http_client() self.store = hs.get_datastore() self.user_to_num_current_syncs = {} self.syncing_users_url = hs.config.replication_url + "/syncing_users" self.clock = hs.get_clock() active_presence = self.store.take_presence_startup_info() self.user_to_current_state = { state.user_id: state for state in active_presence } self.process_id = random_string(16) logger.info("Presence process_id is %r", self.process_id) self._sending_sync = False self._need_to_send_sync = False self.clock.looping_call( self._send_syncing_users_regularly, UPDATE_SYNCING_USERS_MS, ) reactor.addSystemEventTrigger("before", "shutdown", self._on_shutdown) def set_state(self, user, state): # TODO Hows this supposed to work? pass get_states = PresenceHandler.get_states.__func__ current_state_for_users = PresenceHandler.current_state_for_users.__func__ @defer.inlineCallbacks def user_syncing(self, user_id, affect_presence): if affect_presence: curr_sync = self.user_to_num_current_syncs.get(user_id, 0) self.user_to_num_current_syncs[user_id] = curr_sync + 1 prev_states = yield self.current_state_for_users([user_id]) if prev_states[user_id].state == PresenceState.OFFLINE: # TODO: Don't block the sync request on this HTTP hit. yield self._send_syncing_users_now() def _end(): # We check that the user_id is in user_to_num_current_syncs because # user_to_num_current_syncs may have been cleared if we are # shutting down. if affect_presence and user_id in self.user_to_num_current_syncs: self.user_to_num_current_syncs[user_id] -= 1 @contextlib.contextmanager def _user_syncing(): try: yield finally: _end() defer.returnValue(_user_syncing()) @defer.inlineCallbacks def _on_shutdown(self): # When the synchrotron is shutdown tell the master to clear the in # progress syncs for this process self.user_to_num_current_syncs.clear() yield self._send_syncing_users_now() def _send_syncing_users_regularly(self): # Only send an update if we aren't in the middle of sending one. if not self._sending_sync: preserve_fn(self._send_syncing_users_now)() @defer.inlineCallbacks def _send_syncing_users_now(self): if self._sending_sync: # We don't want to race with sending another update. # Instead we wait for that update to finish and send another # update afterwards. self._need_to_send_sync = True return # Flag that we are sending an update. self._sending_sync = True yield self.http_client.post_json_get_json(self.syncing_users_url, { "process_id": self.process_id, "syncing_users": [ user_id for user_id, count in self.user_to_num_current_syncs.items() if count > 0 ], }) # Unset the flag as we are no longer sending an update. self._sending_sync = False if self._need_to_send_sync: # If something happened while we were sending the update then # we might need to send another update. # TODO: Check if the update that was sent matches the current state # as we only need to send an update if they are different. self._need_to_send_sync = False yield self._send_syncing_users_now() def process_replication(self, result): stream = result.get("presence", {"rows": []}) for row in stream["rows"]: ( position, user_id, state, last_active_ts, last_federation_update_ts, last_user_sync_ts, status_msg, currently_active ) = row self.user_to_current_state[user_id] = UserPresenceState( user_id, state, last_active_ts, last_federation_update_ts, last_user_sync_ts, status_msg, currently_active ) class SynchrotronTyping(object): def __init__(self, hs): self._latest_room_serial = 0 self._room_serials = {} self._room_typing = {} def stream_positions(self): return {"typing": self._latest_room_serial} def process_replication(self, result): stream = result.get("typing") if stream: self._latest_room_serial = int(stream["position"]) for row in stream["rows"]: position, room_id, typing_json = row typing = json.loads(typing_json) self._room_serials[room_id] = position self._room_typing[room_id] = typing class SynchrotronApplicationService(object): def notify_interested_services(self, event): pass class SynchrotronServer(HomeServer): def get_db_conn(self, run_new_connection=True): # Any param beginning with cp_ is a parameter for adbapi, and should # not be passed to the database engine. db_params = { k: v for k, v in self.db_config.get("args", {}).items() if not k.startswith("cp_") } db_conn = self.database_engine.module.connect(**db_params) if run_new_connection: self.database_engine.on_new_connection(db_conn) return db_conn def setup(self): logger.info("Setting up.") self.datastore = SynchrotronSlavedStore(self.get_db_conn(), self) logger.info("Finished setting up.") def _listen_http(self, listener_config): port = listener_config["port"] bind_address = listener_config.get("bind_address", "") site_tag = listener_config.get("tag", port) resources = {} for res in listener_config["resources"]: for name in res["names"]: if name == "metrics": resources[METRICS_PREFIX] = MetricsResource(self) elif name == "client": resource = JsonResource(self, canonical_json=False) sync.register_servlets(self, resource) resources.update({ "/_matrix/client/r0": resource, "/_matrix/client/unstable": resource, "/_matrix/client/v2_alpha": resource, }) root_resource = create_resource_tree(resources, Resource()) reactor.listenTCP( port, SynapseSite( "synapse.access.http.%s" % (site_tag,), site_tag, listener_config, root_resource, ), interface=bind_address ) logger.info("Synapse synchrotron now listening on port %d", port) def start_listening(self): for listener in self.config.listeners: if listener["type"] == "http": self._listen_http(listener) elif listener["type"] == "manhole": reactor.listenTCP( listener["port"], manhole( username="matrix", password="rabbithole", globals={"hs": self}, ), interface=listener.get("bind_address", '127.0.0.1') ) else: logger.warn("Unrecognized listener type: %s", listener["type"]) @defer.inlineCallbacks def replicate(self): http_client = self.get_simple_http_client() store = self.get_datastore() replication_url = self.config.replication_url clock = self.get_clock() notifier = self.get_notifier() presence_handler = self.get_presence_handler() typing_handler = self.get_typing_handler() def expire_broken_caches(): store.who_forgot_in_room.invalidate_all() store.get_presence_list_accepted.invalidate_all() def notify_from_stream( result, stream_name, stream_key, room=None, user=None ): stream = result.get(stream_name) if stream: position_index = stream["field_names"].index("position") if room: room_index = stream["field_names"].index(room) if user: user_index = stream["field_names"].index(user) users = () rooms = () for row in stream["rows"]: position = row[position_index] if user: users = (row[user_index],) if room: rooms = (row[room_index],) notifier.on_new_event( stream_key, position, users=users, rooms=rooms ) def notify(result): stream = result.get("events") if stream: max_position = stream["position"] for row in stream["rows"]: position = row[0] internal = json.loads(row[1]) event_json = json.loads(row[2]) event = FrozenEvent(event_json, internal_metadata_dict=internal) extra_users = () if event.type == EventTypes.Member: extra_users = (event.state_key,) notifier.on_new_room_event( event, position, max_position, extra_users ) notify_from_stream( result, "push_rules", "push_rules_key", user="user_id" ) notify_from_stream( result, "user_account_data", "account_data_key", user="user_id" ) notify_from_stream( result, "room_account_data", "account_data_key", user="user_id" ) notify_from_stream( result, "tag_account_data", "account_data_key", user="user_id" ) notify_from_stream( result, "receipts", "receipt_key", room="room_id" ) notify_from_stream( result, "typing", "typing_key", room="room_id" ) next_expire_broken_caches_ms = 0 while True: try: args = store.stream_positions() args.update(typing_handler.stream_positions()) args["timeout"] = 30000 result = yield http_client.get_json(replication_url, args=args) now_ms = clock.time_msec() if now_ms > next_expire_broken_caches_ms: expire_broken_caches() next_expire_broken_caches_ms = ( now_ms + store.BROKEN_CACHE_EXPIRY_MS ) yield store.process_replication(result) typing_handler.process_replication(result) presence_handler.process_replication(result) notify(result) except: logger.exception("Error replicating from %r", replication_url) yield sleep(5) def build_presence_handler(self): return SynchrotronPresence(self) def build_typing_handler(self): return SynchrotronTyping(self) def setup(config_options): try: config = SynchrotronConfig.load_config( "Synapse synchrotron", config_options ) except ConfigError as e: sys.stderr.write("\n" + e.message + "\n") sys.exit(1) if not config: sys.exit(0) config.setup_logging() database_engine = create_engine(config.database_config) ss = SynchrotronServer( config.server_name, db_config=config.database_config, config=config, version_string=get_version_string("Synapse", synapse), database_engine=database_engine, application_service_handler=SynchrotronApplicationService(), ) ss.setup() ss.start_listening() change_resource_limit(ss.config.soft_file_limit) if ss.config.gc_thresholds: ss.set_threshold(*ss.config.gc_thresholds) def start(): ss.get_datastore().start_profiling() ss.replicate() reactor.callWhenRunning(start) return ss if __name__ == '__main__': with LoggingContext("main"): ss = setup(sys.argv[1:]) if ss.config.daemonize: def run(): with LoggingContext("run"): change_resource_limit(ss.config.soft_file_limit) if ss.config.gc_thresholds: gc.set_threshold(*ss.config.gc_thresholds) reactor.run() daemon = Daemonize( app="synapse-synchrotron", pid=ss.config.pid_file, action=run, auto_close_fds=False, verbose=True, logger=logger, ) daemon.start() else: reactor.run()