#!/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.homeserver import HomeServerConfig from synapse.config.logger import setup_logging 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 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.worker_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, ignore_status_msg=False): # 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, listeners): for listener in 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.worker_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 start(config_options): try: config = HomeServerConfig.load_config( "Synapse synchrotron", config_options ) except ConfigError as e: sys.stderr.write("\n" + e.message + "\n") sys.exit(1) assert config.worker_app == "synapse.app.synchrotron" setup_logging(config.worker_log_config, config.worker_log_file) database_engine = create_engine(config.database_config) ss = SynchrotronServer( config.server_name, db_config=config.database_config, config=config, version_string="Synapse/" + get_version_string(synapse), database_engine=database_engine, application_service_handler=SynchrotronApplicationService(), ) ss.setup() ss.start_listening(config.worker_listeners) def run(): with LoggingContext("run"): logger.info("Running") change_resource_limit(config.soft_file_limit) if config.gc_thresholds: gc.set_threshold(*config.gc_thresholds) reactor.run() def start(): ss.get_datastore().start_profiling() ss.replicate() reactor.callWhenRunning(start) if config.worker_daemonize: daemon = Daemonize( app="synapse-synchrotron", pid=config.worker_pid_file, action=run, auto_close_fds=False, verbose=True, logger=logger, ) daemon.start() else: run() if __name__ == '__main__': with LoggingContext("main"): start(sys.argv[1:])