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Merge pull request #2115 from matrix-org/erikj/dedupe_federation_repl

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Reduce federation replication traffic
This commit is contained in:
Erik Johnston 2017-04-12 11:07:13 +01:00 committed by GitHub
commit 247c736b9b
7 changed files with 203 additions and 130 deletions
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3
synapse/app/federation_sender.py
View file

@ -28,6 +28,7 @@ from synapse.replication.slave.storage.deviceinbox import SlavedDeviceInboxStore
from synapse.replication.slave.storage.events import SlavedEventStore
from synapse.replication.slave.storage.receipts import SlavedReceiptsStore
from synapse.replication.slave.storage.registration import SlavedRegistrationStore
from synapse.replication.slave.storage.presence import SlavedPresenceStore
from synapse.replication.slave.storage.transactions import TransactionStore
from synapse.replication.slave.storage.devices import SlavedDeviceStore
from synapse.replication.tcp.client import ReplicationClientHandler
@ -55,7 +56,7 @@ logger = logging.getLogger("synapse.app.appservice")
class FederationSenderSlaveStore(
SlavedDeviceInboxStore, TransactionStore, SlavedReceiptsStore, SlavedEventStore,
SlavedRegistrationStore, SlavedDeviceStore,
SlavedRegistrationStore, SlavedDeviceStore, SlavedPresenceStore,
):
def __init__(self, db_conn, hs):
super(FederationSenderSlaveStore, self).__init__(db_conn, hs)

21
synapse/app/synchrotron.py
View file

@ -20,7 +20,7 @@ from synapse.api.constants import EventTypes
from synapse.config._base import ConfigError
from synapse.config.homeserver import HomeServerConfig
from synapse.config.logger import setup_logging
from synapse.handlers.presence import PresenceHandler
from synapse.handlers.presence import PresenceHandler, get_interested_parties
from synapse.http.site import SynapseSite
from synapse.http.server import JsonResource
from synapse.metrics.resource import MetricsResource, METRICS_PREFIX
@ -44,7 +44,7 @@ from synapse.replication.tcp.client import ReplicationClientHandler
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.presence import UserPresenceState
from synapse.storage.roommember import RoomMemberStore
from synapse.util.httpresourcetree import create_resource_tree
from synapse.util.logcontext import LoggingContext, PreserveLoggingContext, preserve_fn
@ -89,16 +89,6 @@ class SynchrotronSlavedStore(
RoomMemberStore.__dict__["did_forget"]
)
# 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"
]
get_presence_list_observers_accepted = PresenceStore.__dict__[
"get_presence_list_observers_accepted"
]
UPDATE_SYNCING_USERS_MS = 10 * 1000
@ -172,7 +162,6 @@ class SynchrotronPresence(object):
get_states = PresenceHandler.get_states.__func__
get_state = PresenceHandler.get_state.__func__
_get_interested_parties = PresenceHandler._get_interested_parties.__func__
current_state_for_users = PresenceHandler.current_state_for_users.__func__
def user_syncing(self, user_id, affect_presence):
@ -206,10 +195,8 @@ class SynchrotronPresence(object):
@defer.inlineCallbacks
def notify_from_replication(self, states, stream_id):
parties = yield self._get_interested_parties(
states, calculate_remote_hosts=False
)
room_ids_to_states, users_to_states, _ = parties
parties = yield get_interested_parties(self.store, states)
room_ids_to_states, users_to_states = parties
self.notifier.on_new_event(
"presence_key", stream_id, rooms=room_ids_to_states.keys(),

69
synapse/federation/send_queue.py
View file

@ -53,18 +53,19 @@ class FederationRemoteSendQueue(object):
self.server_name = hs.hostname
self.clock = hs.get_clock()
self.notifier = hs.get_notifier()
self.is_mine_id = hs.is_mine_id
self.presence_map = {}
self.presence_changed = sorteddict()
self.presence_map = {} # Pending presence map user_id -> UserPresenceState
self.presence_changed = sorteddict() # Stream position -> user_id
self.keyed_edu = {}
self.keyed_edu_changed = sorteddict()
self.keyed_edu = {} # (destination, key) -> EDU
self.keyed_edu_changed = sorteddict() # stream position -> (destination, key)
self.edus = sorteddict()
self.edus = sorteddict() # stream position -> Edu
self.failures = sorteddict()
self.failures = sorteddict() # stream position -> (destination, Failure)
self.device_messages = sorteddict()
self.device_messages = sorteddict() # stream position -> destination
self.pos = 1
self.pos_time = sorteddict()
@ -120,7 +121,9 @@ class FederationRemoteSendQueue(object):
del self.presence_changed[key]
user_ids = set(
user_id for uids in self.presence_changed.values() for _, user_id in uids
user_id
for uids in self.presence_changed.itervalues()
for user_id in uids
)
to_del = [
@ -187,18 +190,20 @@ class FederationRemoteSendQueue(object):
self.notifier.on_new_replication_data()
def send_presence(self, destination, states):
"""As per TransactionQueue"""
def send_presence(self, states):
"""As per TransactionQueue
Args:
states (list(UserPresenceState))
"""
pos = self._next_pos()
self.presence_map.update({
state.user_id: state
for state in states
})
# We only want to send presence for our own users, so lets always just
# filter here just in case.
local_states = filter(lambda s: self.is_mine_id(s.user_id), states)
self.presence_changed[pos] = [
(destination, state.user_id) for state in states
]
self.presence_map.update({state.user_id: state for state in local_states})
self.presence_changed[pos] = [state.user_id for state in local_states]
self.notifier.on_new_replication_data()
@ -251,15 +256,14 @@ class FederationRemoteSendQueue(object):
keys = self.presence_changed.keys()
i = keys.bisect_right(from_token)
j = keys.bisect_right(to_token) + 1
dest_user_ids = set(
(pos, dest_user_id)
dest_user_ids = [
(pos, user_id)
for pos in keys[i:j]
for dest_user_id in self.presence_changed[pos]
)
for user_id in self.presence_changed[pos]
]
for (key, (dest, user_id)) in dest_user_ids:
for (key, user_id) in dest_user_ids:
rows.append((key, PresenceRow(
destination=dest,
state=self.presence_map[user_id],
)))
@ -357,7 +361,6 @@ class BaseFederationRow(object):
class PresenceRow(BaseFederationRow, namedtuple("PresenceRow", (
"destination", # str
"state", # UserPresenceState
))):
TypeId = "p"
@ -365,18 +368,14 @@ class PresenceRow(BaseFederationRow, namedtuple("PresenceRow", (
@staticmethod
def from_data(data):
return PresenceRow(
destination=data["destination"],
state=UserPresenceState.from_dict(data["state"])
state=UserPresenceState.from_dict(data)
)
def to_data(self):
return {
"destination": self.destination,
"state": self.state.as_dict()
}
return self.state.as_dict()
def add_to_buffer(self, buff):
buff.presence.setdefault(self.destination, []).append(self.state)
buff.presence.append(self.state)
class KeyedEduRow(BaseFederationRow, namedtuple("KeyedEduRow", (
@ -487,7 +486,7 @@ TypeToRow = {
ParsedFederationStreamData = namedtuple("ParsedFederationStreamData", (
"presence", # dict of destination -> [UserPresenceState]
"presence", # list(UserPresenceState)
"keyed_edus", # dict of destination -> { key -> Edu }
"edus", # dict of destination -> [Edu]
"failures", # dict of destination -> [failures]
@ -509,7 +508,7 @@ def process_rows_for_federation(transaction_queue, rows):
# them into the appropriate collection and then send them off.
buff = ParsedFederationStreamData(
presence={},
presence=[],
keyed_edus={},
edus={},
failures={},
@ -526,8 +525,8 @@ def process_rows_for_federation(transaction_queue, rows):
parsed_row = RowType.from_data(row.data)
parsed_row.add_to_buffer(buff)
for destination, states in buff.presence.iteritems():
transaction_queue.send_presence(destination, states)
if buff.presence:
transaction_queue.send_presence(buff.presence)
for destination, edu_map in buff.keyed_edus.iteritems():
for key, edu in edu_map.items():

86
synapse/federation/transaction_queue.py
View file

@ -21,11 +21,11 @@ from .units import Transaction, Edu
from synapse.api.errors import HttpResponseException
from synapse.util.async import run_on_reactor
from synapse.util.logcontext import preserve_context_over_fn
from synapse.util.logcontext import preserve_context_over_fn, preserve_fn
from synapse.util.retryutils import NotRetryingDestination, get_retry_limiter
from synapse.util.metrics import measure_func
from synapse.types import get_domain_from_id
from synapse.handlers.presence import format_user_presence_state
from synapse.handlers.presence import format_user_presence_state, get_interested_remotes
import synapse.metrics
import logging
@ -79,8 +79,18 @@ class TransactionQueue(object):
# destination -> list of tuple(edu, deferred)
self.pending_edus_by_dest = edus = {}
# Presence needs to be separate as we send single aggragate EDUs
# Map of user_id -> UserPresenceState for all the pending presence
# to be sent out by user_id. Entries here get processed and put in
# pending_presence_by_dest
self.pending_presence = {}
# Map of destination -> user_id -> UserPresenceState of pending presence
# to be sent to each destinations
self.pending_presence_by_dest = presence = {}
# Pending EDUs by their "key". Keyed EDUs are EDUs that get clobbered
# based on their key (e.g. typing events by room_id)
# Map of destination -> (edu_type, key) -> Edu
self.pending_edus_keyed_by_dest = edus_keyed = {}
metrics.register_callback(
@ -115,6 +125,8 @@ class TransactionQueue(object):
self._is_processing = False
self._last_poked_id = -1
self._processing_pending_presence = False
def can_send_to(self, destination):
"""Can we send messages to the given server?
@ -226,17 +238,71 @@ class TransactionQueue(object):
self._attempt_new_transaction, destination
)
def send_presence(self, destination, states):
if not self.can_send_to(destination):
return
@preserve_fn # the caller should not yield on this
@defer.inlineCallbacks
def send_presence(self, states):
"""Send the new presence states to the appropriate destinations.
self.pending_presence_by_dest.setdefault(destination, {}).update({
This actually queues up the presence states ready for sending and
triggers a background task to process them and send out the transactions.
Args:
states (list(UserPresenceState))
"""
# First we queue up the new presence by user ID, so multiple presence
# updates in quick successtion are correctly handled
# We only want to send presence for our own users, so lets always just
# filter here just in case.
self.pending_presence.update({
state.user_id: state for state in states
if self.is_mine_id(state.user_id)
})
preserve_context_over_fn(
self._attempt_new_transaction, destination
)
# We then handle the new pending presence in batches, first figuring
# out the destinations we need to send each state to and then poking it
# to attempt a new transaction. We linearize this so that we don't
# accidentally mess up the ordering and send multiple presence updates
# in the wrong order
if self._processing_pending_presence:
return
self._processing_pending_presence = True
try:
while True:
states_map = self.pending_presence
self.pending_presence = {}
if not states_map:
break
yield self._process_presence_inner(states_map.values())
finally:
self._processing_pending_presence = False
@measure_func("txnqueue._process_presence")
@defer.inlineCallbacks
def _process_presence_inner(self, states):
"""Given a list of states populate self.pending_presence_by_dest and
poke to send a new transaction to each destination
Args:
states (list(UserPresenceState))
"""
hosts_and_states = yield get_interested_remotes(self.store, states)
for destinations, states in hosts_and_states:
for destination in destinations:
if not self.can_send_to(destination):
continue
self.pending_presence_by_dest.setdefault(
destination, {}
).update({
state.user_id: state for state in states
})
preserve_fn(self._attempt_new_transaction)(destination)
def send_edu(self, destination, edu_type, content, key=None):
edu = Edu(

143
synapse/handlers/presence.py
View file

@ -318,11 +318,7 @@ class PresenceHandler(object):
if to_federation_ping:
federation_presence_out_counter.inc_by(len(to_federation_ping))
_, _, hosts_to_states = yield self._get_interested_parties(
to_federation_ping.values()
)
self._push_to_remotes(hosts_to_states)
self._push_to_remotes(to_federation_ping.values())
def _handle_timeouts(self):
"""Checks the presence of users that have timed out and updates as
@ -614,54 +610,6 @@ class PresenceHandler(object):
defer.returnValue(states)
@defer.inlineCallbacks
def _get_interested_parties(self, states, calculate_remote_hosts=True):
"""Given a list of states return which entities (rooms, users, servers)
are interested in the given states.
Returns:
3-tuple: `(room_ids_to_states, users_to_states, hosts_to_states)`,
with each item being a dict of `entity_name` -> `[UserPresenceState]`
"""
room_ids_to_states = {}
users_to_states = {}
for state in states:
room_ids = yield self.store.get_rooms_for_user(state.user_id)
for room_id in room_ids:
room_ids_to_states.setdefault(room_id, []).append(state)
plist = yield self.store.get_presence_list_observers_accepted(state.user_id)
for u in plist:
users_to_states.setdefault(u, []).append(state)
# Always notify self
users_to_states.setdefault(state.user_id, []).append(state)
hosts_to_states = {}
if calculate_remote_hosts:
for room_id, states in room_ids_to_states.items():
local_states = filter(lambda s: self.is_mine_id(s.user_id), states)
if not local_states:
continue
hosts = yield self.store.get_hosts_in_room(room_id)
for host in hosts:
hosts_to_states.setdefault(host, []).extend(local_states)
for user_id, states in users_to_states.items():
local_states = filter(lambda s: self.is_mine_id(s.user_id), states)
if not local_states:
continue
host = get_domain_from_id(user_id)
hosts_to_states.setdefault(host, []).extend(local_states)
# TODO: de-dup hosts_to_states, as a single host might have multiple
# of same presence
defer.returnValue((room_ids_to_states, users_to_states, hosts_to_states))
@defer.inlineCallbacks
def _persist_and_notify(self, states):
"""Persist states in the database, poke the notifier and send to
@ -669,34 +617,33 @@ class PresenceHandler(object):
"""
stream_id, max_token = yield self.store.update_presence(states)
parties = yield self._get_interested_parties(states)
room_ids_to_states, users_to_states, hosts_to_states = parties
parties = yield get_interested_parties(self.store, states)
room_ids_to_states, users_to_states = parties
self.notifier.on_new_event(
"presence_key", stream_id, rooms=room_ids_to_states.keys(),
users=[UserID.from_string(u) for u in users_to_states.keys()]
users=[UserID.from_string(u) for u in users_to_states]
)
self._push_to_remotes(hosts_to_states)
self._push_to_remotes(states)
@defer.inlineCallbacks
def notify_for_states(self, state, stream_id):
parties = yield self._get_interested_parties([state])
room_ids_to_states, users_to_states, hosts_to_states = parties
parties = yield get_interested_parties(self.store, [state])
room_ids_to_states, users_to_states = parties
self.notifier.on_new_event(
"presence_key", stream_id, rooms=room_ids_to_states.keys(),
users=[UserID.from_string(u) for u in users_to_states.keys()]
users=[UserID.from_string(u) for u in users_to_states]
)
def _push_to_remotes(self, hosts_to_states):
def _push_to_remotes(self, states):
"""Sends state updates to remote servers.
Args:
hosts_to_states (dict): Mapping `server_name` -> `[UserPresenceState]`
states (list(UserPresenceState))
"""
for host, states in hosts_to_states.items():
self.federation.send_presence(host, states)
self.federation.send_presence(states)
@defer.inlineCallbacks
def incoming_presence(self, origin, content):
@ -837,14 +784,13 @@ class PresenceHandler(object):
if self.is_mine(user):
state = yield self.current_state_for_user(user.to_string())
hosts = set(get_domain_from_id(u) for u in user_ids)
self._push_to_remotes({host: (state,) for host in hosts})
self._push_to_remotes([state])
else:
user_ids = filter(self.is_mine_id, user_ids)
states = yield self.current_state_for_users(user_ids)
self._push_to_remotes({user.domain: states.values()})
self._push_to_remotes(states.values())
@defer.inlineCallbacks
def get_presence_list(self, observer_user, accepted=None):
@ -1344,3 +1290,66 @@ def handle_update(prev_state, new_state, is_mine, wheel_timer, now):
persist_and_notify = True
return new_state, persist_and_notify, federation_ping
@defer.inlineCallbacks
def get_interested_parties(store, states):
"""Given a list of states return which entities (rooms, users)
are interested in the given states.
Args:
states (list(UserPresenceState))
Returns:
2-tuple: `(room_ids_to_states, users_to_states)`,
with each item being a dict of `entity_name` -> `[UserPresenceState]`
"""
room_ids_to_states = {}
users_to_states = {}
for state in states:
room_ids = yield store.get_rooms_for_user(state.user_id)
for room_id in room_ids:
room_ids_to_states.setdefault(room_id, []).append(state)
plist = yield store.get_presence_list_observers_accepted(state.user_id)
for u in plist:
users_to_states.setdefault(u, []).append(state)
# Always notify self
users_to_states.setdefault(state.user_id, []).append(state)
defer.returnValue((room_ids_to_states, users_to_states))
@defer.inlineCallbacks
def get_interested_remotes(store, states):
"""Given a list of presence states figure out which remote servers
should be sent which.
All the presence states should be for local users only.
Args:
store (DataStore)
states (list(UserPresenceState))
Returns:
Deferred list of ([destinations], [UserPresenceState]), where for
each row the list of UserPresenceState should be sent to each
destination
"""
hosts_and_states = []
# First we look up the rooms each user is in (as well as any explicit
# subscriptions), then for each distinct room we look up the remote
# hosts in those rooms.
room_ids_to_states, users_to_states = yield get_interested_parties(store, states)
for room_id, states in room_ids_to_states.iteritems():
hosts = yield store.get_hosts_in_room(room_id)
hosts_and_states.append((hosts, states))
for user_id, states in users_to_states.iteritems():
host = get_domain_from_id(user_id)
hosts_and_states.append(([host], states))
defer.returnValue(hosts_and_states)

1
synapse/replication/slave/storage/events.py
View file

@ -71,6 +71,7 @@ class SlavedEventStore(BaseSlavedStore):
# to reach inside the __dict__ to extract them.
get_rooms_for_user = RoomMemberStore.__dict__["get_rooms_for_user"]
get_users_in_room = RoomMemberStore.__dict__["get_users_in_room"]
get_hosts_in_room = RoomMemberStore.__dict__["get_hosts_in_room"]
get_users_who_share_room_with_user = (
RoomMemberStore.__dict__["get_users_who_share_room_with_user"]
)

10
synapse/replication/slave/storage/presence.py
View file

@ -39,6 +39,16 @@ class SlavedPresenceStore(BaseSlavedStore):
_get_presence_for_user = PresenceStore.__dict__["_get_presence_for_user"]
get_presence_for_users = PresenceStore.__dict__["get_presence_for_users"]
# 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"
]
get_presence_list_observers_accepted = PresenceStore.__dict__[
"get_presence_list_observers_accepted"
]
def get_current_presence_token(self):
return self._presence_id_gen.get_current_token()