MatrixSynapse/synapse/app/synchrotron.py

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