diff options
Diffstat (limited to 'synapse/app/synchrotron.py')
| -rw-r--r-- | synapse/app/synchrotron.py | 465 |
1 files changed, 465 insertions, 0 deletions
diff --git a/synapse/app/synchrotron.py b/synapse/app/synchrotron.py new file mode 100644 index 0000000000..215ccfd522 --- /dev/null +++ b/synapse/app/synchrotron.py @@ -0,0 +1,465 @@ +#!/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): + # 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:]) |