456 lines
		
	
	
		
			17 KiB
		
	
	
	
		
			Python
		
	
	
			
		
		
	
	
			456 lines
		
	
	
		
			17 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 contextlib
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| import logging
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| import sys
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| 
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| from six import iteritems
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| 
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| from twisted.internet import defer, reactor
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| from twisted.web.resource import NoResource
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| 
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| import synapse
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| from synapse.api.constants import EventTypes
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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.handlers.presence import PresenceHandler, get_interested_parties
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| from synapse.http.server import JsonResource
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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._base import BaseSlavedStore, __func__
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| from synapse.replication.slave.storage.account_data import SlavedAccountDataStore
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| from synapse.replication.slave.storage.appservice import SlavedApplicationServiceStore
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| from synapse.replication.slave.storage.client_ips import SlavedClientIpStore
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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.filtering import SlavedFilteringStore
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| from synapse.replication.slave.storage.groups import SlavedGroupServerStore
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| from synapse.replication.slave.storage.presence import SlavedPresenceStore
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| from synapse.replication.slave.storage.push_rule import SlavedPushRuleStore
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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.room import RoomStore
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| from synapse.replication.tcp.client import ReplicationClientHandler
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| from synapse.rest.client.v1 import events
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| from synapse.rest.client.v1.initial_sync import InitialSyncRestServlet
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| from synapse.rest.client.v1.room import RoomInitialSyncRestServlet
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| from synapse.rest.client.v2_alpha import sync
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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.storage.presence import UserPresenceState
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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.stringutils import random_string
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| from synapse.util.versionstring import get_version_string
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| 
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| logger = logging.getLogger("synapse.app.synchrotron")
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| 
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| 
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| class SynchrotronSlavedStore(
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|     SlavedReceiptsStore,
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|     SlavedAccountDataStore,
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|     SlavedApplicationServiceStore,
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|     SlavedRegistrationStore,
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|     SlavedFilteringStore,
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|     SlavedPresenceStore,
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|     SlavedGroupServerStore,
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|     SlavedDeviceInboxStore,
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|     SlavedDeviceStore,
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|     SlavedPushRuleStore,
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|     SlavedEventStore,
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|     SlavedClientIpStore,
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|     RoomStore,
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|     BaseSlavedStore,
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| ):
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|     pass
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| 
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| 
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| UPDATE_SYNCING_USERS_MS = 10 * 1000
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| 
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| 
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| class SynchrotronPresence(object):
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|     def __init__(self, hs):
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|         self.hs = hs
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|         self.is_mine_id = hs.is_mine_id
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|         self.http_client = hs.get_simple_http_client()
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|         self.store = hs.get_datastore()
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|         self.user_to_num_current_syncs = {}
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|         self.clock = hs.get_clock()
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|         self.notifier = hs.get_notifier()
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| 
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|         active_presence = self.store.take_presence_startup_info()
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|         self.user_to_current_state = {
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|             state.user_id: state
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|             for state in active_presence
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|         }
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| 
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|         # user_id -> last_sync_ms. Lists the users that have stopped syncing
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|         # but we haven't notified the master of that yet
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|         self.users_going_offline = {}
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| 
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|         self._send_stop_syncing_loop = self.clock.looping_call(
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|             self.send_stop_syncing, 10 * 1000
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|         )
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| 
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|         self.process_id = random_string(16)
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|         logger.info("Presence process_id is %r", self.process_id)
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| 
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|     def send_user_sync(self, user_id, is_syncing, last_sync_ms):
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|         if self.hs.config.use_presence:
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|             self.hs.get_tcp_replication().send_user_sync(
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|                 user_id, is_syncing, last_sync_ms
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|             )
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| 
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|     def mark_as_coming_online(self, user_id):
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|         """A user has started syncing. Send a UserSync to the master, unless they
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|         had recently stopped syncing.
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| 
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|         Args:
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|             user_id (str)
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|         """
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|         going_offline = self.users_going_offline.pop(user_id, None)
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|         if not going_offline:
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|             # Safe to skip because we haven't yet told the master they were offline
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|             self.send_user_sync(user_id, True, self.clock.time_msec())
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| 
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|     def mark_as_going_offline(self, user_id):
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|         """A user has stopped syncing. We wait before notifying the master as
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|         its likely they'll come back soon. This allows us to avoid sending
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|         a stopped syncing immediately followed by a started syncing notification
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|         to the master
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| 
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|         Args:
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|             user_id (str)
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|         """
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|         self.users_going_offline[user_id] = self.clock.time_msec()
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| 
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|     def send_stop_syncing(self):
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|         """Check if there are any users who have stopped syncing a while ago
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|         and haven't come back yet. If there are poke the master about them.
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|         """
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|         now = self.clock.time_msec()
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|         for user_id, last_sync_ms in list(self.users_going_offline.items()):
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|             if now - last_sync_ms > 10 * 1000:
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|                 self.users_going_offline.pop(user_id, None)
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|                 self.send_user_sync(user_id, False, last_sync_ms)
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| 
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|     def set_state(self, user, state, ignore_status_msg=False):
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|         # TODO Hows this supposed to work?
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|         pass
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| 
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|     get_states = __func__(PresenceHandler.get_states)
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|     get_state = __func__(PresenceHandler.get_state)
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|     current_state_for_users = __func__(PresenceHandler.current_state_for_users)
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| 
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|     def user_syncing(self, user_id, affect_presence):
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|         if affect_presence:
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|             curr_sync = self.user_to_num_current_syncs.get(user_id, 0)
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|             self.user_to_num_current_syncs[user_id] = curr_sync + 1
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| 
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|             # If we went from no in flight sync to some, notify replication
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|             if self.user_to_num_current_syncs[user_id] == 1:
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|                 self.mark_as_coming_online(user_id)
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| 
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|         def _end():
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|             # We check that the user_id is in user_to_num_current_syncs because
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|             # user_to_num_current_syncs may have been cleared if we are
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|             # shutting down.
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|             if affect_presence and user_id in self.user_to_num_current_syncs:
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|                 self.user_to_num_current_syncs[user_id] -= 1
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| 
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|                 # If we went from one in flight sync to non, notify replication
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|                 if self.user_to_num_current_syncs[user_id] == 0:
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|                     self.mark_as_going_offline(user_id)
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| 
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|         @contextlib.contextmanager
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|         def _user_syncing():
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|             try:
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|                 yield
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|             finally:
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|                 _end()
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| 
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|         return defer.succeed(_user_syncing())
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| 
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|     @defer.inlineCallbacks
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|     def notify_from_replication(self, states, stream_id):
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|         parties = yield get_interested_parties(self.store, states)
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|         room_ids_to_states, users_to_states = parties
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| 
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|         self.notifier.on_new_event(
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|             "presence_key", stream_id, rooms=room_ids_to_states.keys(),
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|             users=users_to_states.keys()
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|         )
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| 
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|     @defer.inlineCallbacks
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|     def process_replication_rows(self, token, rows):
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|         states = [UserPresenceState(
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|             row.user_id, row.state, row.last_active_ts,
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|             row.last_federation_update_ts, row.last_user_sync_ts, row.status_msg,
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|             row.currently_active
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|         ) for row in rows]
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| 
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|         for state in states:
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|             self.user_to_current_state[state.user_id] = state
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| 
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|         stream_id = token
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|         yield self.notify_from_replication(states, stream_id)
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| 
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|     def get_currently_syncing_users(self):
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|         if self.hs.config.use_presence:
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|             return [
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|                 user_id for user_id, count in iteritems(self.user_to_num_current_syncs)
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|                 if count > 0
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|             ]
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|         else:
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|             return set()
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| 
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| 
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| class SynchrotronTyping(object):
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|     def __init__(self, hs):
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|         self._latest_room_serial = 0
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|         self._reset()
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| 
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|     def _reset(self):
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|         """
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|         Reset the typing handler's data caches.
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|         """
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|         # map room IDs to serial numbers
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|         self._room_serials = {}
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|         # map room IDs to sets of users currently typing
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|         self._room_typing = {}
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| 
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|     def stream_positions(self):
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|         # We must update this typing token from the response of the previous
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|         # sync. In particular, the stream id may "reset" back to zero/a low
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|         # value which we *must* use for the next replication request.
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|         return {"typing": self._latest_room_serial}
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| 
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|     def process_replication_rows(self, token, rows):
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|         if self._latest_room_serial > token:
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|             # The master has gone backwards. To prevent inconsistent data, just
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|             # clear everything.
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|             self._reset()
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| 
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|         # Set the latest serial token to whatever the server gave us.
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|         self._latest_room_serial = token
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| 
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|         for row in rows:
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|             self._room_serials[row.room_id] = token
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|             self._room_typing[row.room_id] = row.user_ids
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| 
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| 
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| class SynchrotronApplicationService(object):
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|     def notify_interested_services(self, event):
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|         pass
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| 
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| 
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| class SynchrotronServer(HomeServer):
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|     DATASTORE_CLASS = SynchrotronSlavedStore
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| 
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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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|                 elif name == "client":
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|                     resource = JsonResource(self, canonical_json=False)
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|                     sync.register_servlets(self, resource)
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|                     events.register_servlets(self, resource)
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|                     InitialSyncRestServlet(self).register(resource)
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|                     RoomInitialSyncRestServlet(self).register(resource)
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|                     resources.update({
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|                         "/_matrix/client/r0": resource,
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|                         "/_matrix/client/unstable": resource,
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|                         "/_matrix/client/v2_alpha": resource,
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|                         "/_matrix/client/api/v1": resource,
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|                     })
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| 
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|         root_resource = create_resource_tree(resources, NoResource())
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| 
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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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| 
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|         logger.info("Synapse synchrotron now listening on port %d", port)
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| 
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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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| 
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|         self.get_tcp_replication().start_replication(self)
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| 
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|     def build_tcp_replication(self):
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|         return SyncReplicationHandler(self)
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| 
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|     def build_presence_handler(self):
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|         return SynchrotronPresence(self)
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| 
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|     def build_typing_handler(self):
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|         return SynchrotronTyping(self)
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| 
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| 
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| class SyncReplicationHandler(ReplicationClientHandler):
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|     def __init__(self, hs):
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|         super(SyncReplicationHandler, self).__init__(hs.get_datastore())
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| 
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|         self.store = hs.get_datastore()
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|         self.typing_handler = hs.get_typing_handler()
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|         # NB this is a SynchrotronPresence, not a normal PresenceHandler
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|         self.presence_handler = hs.get_presence_handler()
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|         self.notifier = hs.get_notifier()
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| 
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|     @defer.inlineCallbacks
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|     def on_rdata(self, stream_name, token, rows):
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|         yield super(SyncReplicationHandler, self).on_rdata(stream_name, token, rows)
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|         run_in_background(self.process_and_notify, stream_name, token, rows)
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| 
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|     def get_streams_to_replicate(self):
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|         args = super(SyncReplicationHandler, self).get_streams_to_replicate()
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|         args.update(self.typing_handler.stream_positions())
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|         return args
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| 
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|     def get_currently_syncing_users(self):
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|         return self.presence_handler.get_currently_syncing_users()
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| 
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|     @defer.inlineCallbacks
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|     def process_and_notify(self, stream_name, token, rows):
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|         try:
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|             if stream_name == "events":
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|                 # We shouldn't get multiple rows per token for events stream, so
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|                 # we don't need to optimise this for multiple rows.
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|                 for row in rows:
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|                     event = yield self.store.get_event(row.event_id)
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|                     extra_users = ()
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|                     if event.type == EventTypes.Member:
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|                         extra_users = (event.state_key,)
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|                     max_token = self.store.get_room_max_stream_ordering()
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|                     self.notifier.on_new_room_event(
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|                         event, token, max_token, extra_users
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|                     )
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|             elif stream_name == "push_rules":
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|                 self.notifier.on_new_event(
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|                     "push_rules_key", token, users=[row.user_id for row in rows],
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|                 )
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|             elif stream_name in ("account_data", "tag_account_data",):
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|                 self.notifier.on_new_event(
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|                     "account_data_key", token, users=[row.user_id for row in rows],
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|                 )
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|             elif stream_name == "receipts":
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|                 self.notifier.on_new_event(
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|                     "receipt_key", token, rooms=[row.room_id for row in rows],
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|                 )
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|             elif stream_name == "typing":
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|                 self.typing_handler.process_replication_rows(token, rows)
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|                 self.notifier.on_new_event(
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|                     "typing_key", token, rooms=[row.room_id for row in rows],
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|                 )
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|             elif stream_name == "to_device":
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|                 entities = [row.entity for row in rows if row.entity.startswith("@")]
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|                 if entities:
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|                     self.notifier.on_new_event(
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|                         "to_device_key", token, users=entities,
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|                     )
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|             elif stream_name == "device_lists":
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|                 all_room_ids = set()
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|                 for row in rows:
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|                     room_ids = yield self.store.get_rooms_for_user(row.user_id)
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|                     all_room_ids.update(room_ids)
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|                 self.notifier.on_new_event(
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|                     "device_list_key", token, rooms=all_room_ids,
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|                 )
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|             elif stream_name == "presence":
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|                 yield self.presence_handler.process_replication_rows(token, rows)
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|             elif stream_name == "receipts":
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|                 self.notifier.on_new_event(
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|                     "groups_key", token, users=[row.user_id for row in rows],
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|                 )
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|         except Exception:
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|             logger.exception("Error processing replication")
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| 
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| 
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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 synchrotron", config_options
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|         )
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|     except ConfigError as e:
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|         sys.stderr.write("\n" + str(e) + "\n")
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|         sys.exit(1)
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| 
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|     assert config.worker_app == "synapse.app.synchrotron"
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| 
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|     setup_logging(config, use_worker_options=True)
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| 
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|     synapse.events.USE_FROZEN_DICTS = config.use_frozen_dicts
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| 
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|     database_engine = create_engine(config.database_config)
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| 
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|     ss = SynchrotronServer(
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|         config.server_name,
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|         db_config=config.database_config,
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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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|         application_service_handler=SynchrotronApplicationService(),
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|     )
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| 
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|     ss.setup()
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|     reactor.callWhenRunning(_base.start, ss, config.worker_listeners)
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| 
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|     _base.start_worker_reactor("synapse-synchrotron", config)
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| 
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| 
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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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