diff options
Diffstat (limited to 'synapse/handlers')
| -rw-r--r-- | synapse/handlers/__init__.py | 2 | ||||
| -rw-r--r-- | synapse/handlers/events.py | 66 | ||||
| -rw-r--r-- | synapse/handlers/federation.py | 481 | ||||
| -rw-r--r-- | synapse/handlers/message.py | 12 | ||||
| -rw-r--r-- | synapse/handlers/presence.py | 5 | ||||
| -rw-r--r-- | synapse/handlers/register.py | 2 | ||||
| -rw-r--r-- | synapse/handlers/sync.py | 434 |
7 files changed, 848 insertions, 154 deletions
diff --git a/synapse/handlers/__init__.py b/synapse/handlers/__init__.py index 96a9b143ca..b31518bf62 100644 --- a/synapse/handlers/__init__.py +++ b/synapse/handlers/__init__.py @@ -27,6 +27,7 @@ from .directory import DirectoryHandler from .typing import TypingNotificationHandler from .admin import AdminHandler from .appservice import ApplicationServicesHandler +from .sync import SyncHandler class Handlers(object): @@ -53,3 +54,4 @@ class Handlers(object): self.typing_notification_handler = TypingNotificationHandler(hs) self.admin_handler = AdminHandler(hs) self.appservice_handler = ApplicationServicesHandler(hs) + self.sync_handler = SyncHandler(hs) diff --git a/synapse/handlers/events.py b/synapse/handlers/events.py index d997917cd6..025e7e7e62 100644 --- a/synapse/handlers/events.py +++ b/synapse/handlers/events.py @@ -49,24 +49,25 @@ class EventStreamHandler(BaseHandler): @defer.inlineCallbacks @log_function def get_stream(self, auth_user_id, pagin_config, timeout=0, - as_client_event=True): + as_client_event=True, affect_presence=True): auth_user = UserID.from_string(auth_user_id) try: - if auth_user not in self._streams_per_user: - self._streams_per_user[auth_user] = 0 - if auth_user in self._stop_timer_per_user: - try: - self.clock.cancel_call_later( - self._stop_timer_per_user.pop(auth_user) + if affect_presence: + if auth_user not in self._streams_per_user: + self._streams_per_user[auth_user] = 0 + if auth_user in self._stop_timer_per_user: + try: + self.clock.cancel_call_later( + self._stop_timer_per_user.pop(auth_user) + ) + except: + logger.exception("Failed to cancel event timer") + else: + yield self.distributor.fire( + "started_user_eventstream", auth_user ) - except: - logger.exception("Failed to cancel event timer") - else: - yield self.distributor.fire( - "started_user_eventstream", auth_user - ) - self._streams_per_user[auth_user] += 1 + self._streams_per_user[auth_user] += 1 if pagin_config.from_token is None: pagin_config.from_token = None @@ -94,27 +95,28 @@ class EventStreamHandler(BaseHandler): defer.returnValue(chunk) finally: - self._streams_per_user[auth_user] -= 1 - if not self._streams_per_user[auth_user]: - del self._streams_per_user[auth_user] - - # 10 seconds of grace to allow the client to reconnect again - # before we think they're gone - def _later(): - logger.debug( - "_later stopped_user_eventstream %s", auth_user - ) + if affect_presence: + self._streams_per_user[auth_user] -= 1 + if not self._streams_per_user[auth_user]: + del self._streams_per_user[auth_user] + + # 10 seconds of grace to allow the client to reconnect again + # before we think they're gone + def _later(): + logger.debug( + "_later stopped_user_eventstream %s", auth_user + ) - self._stop_timer_per_user.pop(auth_user, None) + self._stop_timer_per_user.pop(auth_user, None) - yield self.distributor.fire( - "stopped_user_eventstream", auth_user - ) + return self.distributor.fire( + "stopped_user_eventstream", auth_user + ) - logger.debug("Scheduling _later: for %s", auth_user) - self._stop_timer_per_user[auth_user] = ( - self.clock.call_later(30, _later) - ) + logger.debug("Scheduling _later: for %s", auth_user) + self._stop_timer_per_user[auth_user] = ( + self.clock.call_later(30, _later) + ) class EventHandler(BaseHandler): diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py index bcdcc90a18..8bf5a4cc11 100644 --- a/synapse/handlers/federation.py +++ b/synapse/handlers/federation.py @@ -17,19 +17,16 @@ from ._base import BaseHandler -from synapse.events.utils import prune_event from synapse.api.errors import ( - AuthError, FederationError, SynapseError, StoreError, + AuthError, FederationError, StoreError, ) -from synapse.api.constants import EventTypes, Membership +from synapse.api.constants import EventTypes, Membership, RejectedReason from synapse.util.logutils import log_function from synapse.util.async import run_on_reactor from synapse.crypto.event_signing import ( - compute_event_signature, check_event_content_hash, - add_hashes_and_signatures, + compute_event_signature, add_hashes_and_signatures, ) from synapse.types import UserID -from syutil.jsonutil import encode_canonical_json from twisted.internet import defer @@ -113,33 +110,6 @@ class FederationHandler(BaseHandler): logger.debug("Processing event: %s", event.event_id) - redacted_event = prune_event(event) - - redacted_pdu_json = redacted_event.get_pdu_json() - try: - yield self.keyring.verify_json_for_server( - event.origin, redacted_pdu_json - ) - except SynapseError as e: - logger.warn( - "Signature check failed for %s redacted to %s", - encode_canonical_json(pdu.get_pdu_json()), - encode_canonical_json(redacted_pdu_json), - ) - raise FederationError( - "ERROR", - e.code, - e.msg, - affected=event.event_id, - ) - - if not check_event_content_hash(event): - logger.warn( - "Event content has been tampered, redacting %s, %s", - event.event_id, encode_canonical_json(event.get_dict()) - ) - event = redacted_event - logger.debug("Event: %s", event) # FIXME (erikj): Awful hack to make the case where we are not currently @@ -149,41 +119,20 @@ class FederationHandler(BaseHandler): event.room_id, self.server_name ) - if not is_in_room and not event.internal_metadata.outlier: + if not is_in_room and not event.internal_metadata.is_outlier(): logger.debug("Got event for room we're not in.") - - replication = self.replication_layer - - if not state: - state, auth_chain = yield replication.get_state_for_room( - origin, context=event.room_id, event_id=event.event_id, - ) - - if not auth_chain: - auth_chain = yield replication.get_event_auth( - origin, - context=event.room_id, - event_id=event.event_id, - ) - - for e in auth_chain: - e.internal_metadata.outlier = True - try: - yield self._handle_new_event(e, fetch_auth_from=origin) - except: - logger.exception( - "Failed to handle auth event %s", - e.event_id, - ) - current_state = state - if state: + if state and auth_chain is not None: for e in state: - logging.info("A :) %r", e) e.internal_metadata.outlier = True try: - yield self._handle_new_event(e) + auth_ids = [e_id for e_id, _ in e.auth_events] + auth = { + (e.type, e.state_key): e for e in auth_chain + if e.event_id in auth_ids + } + yield self._handle_new_event(origin, e, auth_events=auth) except: logger.exception( "Failed to handle state event %s", @@ -192,6 +141,7 @@ class FederationHandler(BaseHandler): try: yield self._handle_new_event( + origin, event, state=state, backfilled=backfilled, @@ -393,8 +343,19 @@ class FederationHandler(BaseHandler): for e in auth_chain: e.internal_metadata.outlier = True + + if e.event_id == event.event_id: + continue + try: - yield self._handle_new_event(e) + auth_ids = [e_id for e_id, _ in e.auth_events] + auth = { + (e.type, e.state_key): e for e in auth_chain + if e.event_id in auth_ids + } + yield self._handle_new_event( + target_host, e, auth_events=auth + ) except: logger.exception( "Failed to handle auth event %s", @@ -402,11 +363,18 @@ class FederationHandler(BaseHandler): ) for e in state: - # FIXME: Auth these. + if e.event_id == event.event_id: + continue + e.internal_metadata.outlier = True try: + auth_ids = [e_id for e_id, _ in e.auth_events] + auth = { + (e.type, e.state_key): e for e in auth_chain + if e.event_id in auth_ids + } yield self._handle_new_event( - e, fetch_auth_from=target_host + target_host, e, auth_events=auth ) except: logger.exception( @@ -414,10 +382,18 @@ class FederationHandler(BaseHandler): e.event_id, ) + auth_ids = [e_id for e_id, _ in event.auth_events] + auth_events = { + (e.type, e.state_key): e for e in auth_chain + if e.event_id in auth_ids + } + yield self._handle_new_event( + target_host, new_event, state=state, current_state=state, + auth_events=auth_events, ) yield self.notifier.on_new_room_event( @@ -481,7 +457,7 @@ class FederationHandler(BaseHandler): event.internal_metadata.outlier = False - context = yield self._handle_new_event(event) + context = yield self._handle_new_event(origin, event) logger.debug( "on_send_join_request: After _handle_new_event: %s, sigs: %s", @@ -682,11 +658,12 @@ class FederationHandler(BaseHandler): waiters.pop().callback(None) @defer.inlineCallbacks - def _handle_new_event(self, event, state=None, backfilled=False, - current_state=None, fetch_auth_from=None): + @log_function + def _handle_new_event(self, origin, event, state=None, backfilled=False, + current_state=None, auth_events=None): logger.debug( - "_handle_new_event: Before annotate: %s, sigs: %s", + "_handle_new_event: %s, sigs: %s", event.event_id, event.signatures, ) @@ -694,65 +671,44 @@ class FederationHandler(BaseHandler): event, old_state=state ) + if not auth_events: + auth_events = context.auth_events + logger.debug( - "_handle_new_event: Before auth fetch: %s, sigs: %s", - event.event_id, event.signatures, + "_handle_new_event: %s, auth_events: %s", + event.event_id, auth_events, ) is_new_state = not event.internal_metadata.is_outlier() - known_ids = set( - [s.event_id for s in context.auth_events.values()] - ) - - for e_id, _ in event.auth_events: - if e_id not in known_ids: - e = yield self.store.get_event(e_id, allow_none=True) - - if not e and fetch_auth_from is not None: - # Grab the auth_chain over federation if we are missing - # auth events. - auth_chain = yield self.replication_layer.get_event_auth( - fetch_auth_from, event.event_id, event.room_id - ) - for auth_event in auth_chain: - yield self._handle_new_event(auth_event) - e = yield self.store.get_event(e_id, allow_none=True) - - if not e: - # TODO: Do some conflict res to make sure that we're - # not the ones who are wrong. - logger.info( - "Rejecting %s as %s not in db or %s", - event.event_id, e_id, known_ids, - ) - # FIXME: How does raising AuthError work with federation? - raise AuthError(403, "Cannot find auth event") - - context.auth_events[(e.type, e.state_key)] = e - - logger.debug( - "_handle_new_event: Before hack: %s, sigs: %s", - event.event_id, event.signatures, - ) - + # This is a hack to fix some old rooms where the initial join event + # didn't reference the create event in its auth events. if event.type == EventTypes.Member and not event.auth_events: if len(event.prev_events) == 1: c = yield self.store.get_event(event.prev_events[0][0]) if c.type == EventTypes.Create: - context.auth_events[(c.type, c.state_key)] = c + auth_events[(c.type, c.state_key)] = c - logger.debug( - "_handle_new_event: Before auth check: %s, sigs: %s", - event.event_id, event.signatures, - ) + try: + yield self.do_auth( + origin, event, context, auth_events=auth_events + ) + except AuthError as e: + logger.warn( + "Rejecting %s because %s", + event.event_id, e.msg + ) - self.auth.check(event, auth_events=context.auth_events) + context.rejected = RejectedReason.AUTH_ERROR - logger.debug( - "_handle_new_event: Before persist_event: %s, sigs: %s", - event.event_id, event.signatures, - ) + yield self.store.persist_event( + event, + context=context, + backfilled=backfilled, + is_new_state=False, + current_state=current_state, + ) + raise yield self.store.persist_event( event, @@ -762,9 +718,294 @@ class FederationHandler(BaseHandler): current_state=current_state, ) - logger.debug( - "_handle_new_event: After persist_event: %s, sigs: %s", - event.event_id, event.signatures, + defer.returnValue(context) + + @defer.inlineCallbacks + def on_query_auth(self, origin, event_id, remote_auth_chain, rejects, + missing): + # Just go through and process each event in `remote_auth_chain`. We + # don't want to fall into the trap of `missing` being wrong. + for e in remote_auth_chain: + try: + yield self._handle_new_event(origin, e) + except AuthError: + pass + + # Now get the current auth_chain for the event. + local_auth_chain = yield self.store.get_auth_chain([event_id]) + + # TODO: Check if we would now reject event_id. If so we need to tell + # everyone. + + ret = yield self.construct_auth_difference( + local_auth_chain, remote_auth_chain ) - defer.returnValue(context) + for event in ret["auth_chain"]: + event.signatures.update( + compute_event_signature( + event, + self.hs.hostname, + self.hs.config.signing_key[0] + ) + ) + + logger.debug("on_query_auth reutrning: %s", ret) + + defer.returnValue(ret) + + @defer.inlineCallbacks + @log_function + def do_auth(self, origin, event, context, auth_events): + # Check if we have all the auth events. + res = yield self.store.have_events( + [e_id for e_id, _ in event.auth_events] + ) + + event_auth_events = set(e_id for e_id, _ in event.auth_events) + seen_events = set(res.keys()) + + missing_auth = event_auth_events - seen_events + + if missing_auth: + logger.debug("Missing auth: %s", missing_auth) + # If we don't have all the auth events, we need to get them. + remote_auth_chain = yield self.replication_layer.get_event_auth( + origin, event.room_id, event.event_id + ) + + seen_remotes = yield self.store.have_events( + [e.event_id for e in remote_auth_chain] + ) + + for e in remote_auth_chain: + if e.event_id in seen_remotes.keys(): + continue + + if e.event_id == event.event_id: + continue + + try: + auth_ids = [e_id for e_id, _ in e.auth_events] + auth = { + (e.type, e.state_key): e for e in remote_auth_chain + if e.event_id in auth_ids + } + e.internal_metadata.outlier = True + + logger.debug( + "do_auth %s missing_auth: %s", + event.event_id, e.event_id + ) + yield self._handle_new_event( + origin, e, auth_events=auth + ) + + if e.event_id in event_auth_events: + auth_events[(e.type, e.state_key)] = e + except AuthError: + pass + + # FIXME: Assumes we have and stored all the state for all the + # prev_events + current_state = set(e.event_id for e in auth_events.values()) + different_auth = event_auth_events - current_state + + if different_auth and not event.internal_metadata.is_outlier(): + # Do auth conflict res. + logger.debug("Different auth: %s", different_auth) + + # 1. Get what we think is the auth chain. + auth_ids = self.auth.compute_auth_events(event, context) + local_auth_chain = yield self.store.get_auth_chain(auth_ids) + + # 2. Get remote difference. + result = yield self.replication_layer.query_auth( + origin, + event.room_id, + event.event_id, + local_auth_chain, + ) + + seen_remotes = yield self.store.have_events( + [e.event_id for e in result["auth_chain"]] + ) + + # 3. Process any remote auth chain events we haven't seen. + for ev in result["auth_chain"]: + if ev.event_id in seen_remotes.keys(): + continue + + if ev.event_id == event.event_id: + continue + + try: + auth_ids = [e_id for e_id, _ in ev.auth_events] + auth = { + (e.type, e.state_key): e for e in result["auth_chain"] + if e.event_id in auth_ids + } + ev.internal_metadata.outlier = True + + logger.debug( + "do_auth %s different_auth: %s", + event.event_id, e.event_id + ) + + yield self._handle_new_event( + origin, ev, auth_events=auth + ) + + if ev.event_id in event_auth_events: + auth_events[(ev.type, ev.state_key)] = ev + except AuthError: + pass + + # 4. Look at rejects and their proofs. + # TODO. + + context.current_state.update(auth_events) + context.state_group = None + + try: + self.auth.check(event, auth_events=auth_events) + except AuthError: + raise + + @defer.inlineCallbacks + def construct_auth_difference(self, local_auth, remote_auth): + """ Given a local and remote auth chain, find the differences. This + assumes that we have already processed all events in remote_auth + + Params: + local_auth (list) + remote_auth (list) + + Returns: + dict + """ + + logger.debug("construct_auth_difference Start!") + + # TODO: Make sure we are OK with local_auth or remote_auth having more + # auth events in them than strictly necessary. + + def sort_fun(ev): + return ev.depth, ev.event_id + + logger.debug("construct_auth_difference after sort_fun!") + + # We find the differences by starting at the "bottom" of each list + # and iterating up on both lists. The lists are ordered by depth and + # then event_id, we iterate up both lists until we find the event ids + # don't match. Then we look at depth/event_id to see which side is + # missing that event, and iterate only up that list. Repeat. + + remote_list = list(remote_auth) + remote_list.sort(key=sort_fun) + + local_list = list(local_auth) + local_list.sort(key=sort_fun) + + local_iter = iter(local_list) + remote_iter = iter(remote_list) + + logger.debug("construct_auth_difference before get_next!") + + def get_next(it, opt=None): + try: + return it.next() + except: + return opt + + current_local = get_next(local_iter) + current_remote = get_next(remote_iter) + + logger.debug("construct_auth_difference before while") + + missing_remotes = [] + missing_locals = [] + while current_local or current_remote: + if current_remote is None: + missing_locals.append(current_local) + current_local = get_next(local_iter) + continue + + if current_local is None: + missing_remotes.append(current_remote) + current_remote = get_next(remote_iter) + continue + + if current_local.event_id == current_remote.event_id: + current_local = get_next(local_iter) + current_remote = get_next(remote_iter) + continue + + if current_local.depth < current_remote.depth: + missing_locals.append(current_local) + current_local = get_next(local_iter) + continue + + if current_local.depth > current_remote.depth: + missing_remotes.append(current_remote) + current_remote = get_next(remote_iter) + continue + + # They have the same depth, so we fall back to the event_id order + if current_local.event_id < current_remote.event_id: + missing_locals.append(current_local) + current_local = get_next(local_iter) + + if current_local.event_id > current_remote.event_id: + missing_remotes.append(current_remote) + current_remote = get_next(remote_iter) + continue + + logger.debug("construct_auth_difference after while") + + # missing locals should be sent to the server + # We should find why we are missing remotes, as they will have been + # rejected. + + # Remove events from missing_remotes if they are referencing a missing + # remote. We only care about the "root" rejected ones. + missing_remote_ids = [e.event_id for e in missing_remotes] + base_remote_rejected = list(missing_remotes) + for e in missing_remotes: + for e_id, _ in e.auth_events: + if e_id in missing_remote_ids: + base_remote_rejected.remove(e) + + reason_map = {} + + for e in base_remote_rejected: + reason = yield self.store.get_rejection_reason(e.event_id) + if reason is None: + # FIXME: ERRR?! + logger.warn("Could not find reason for %s", e.event_id) + raise RuntimeError("") + + reason_map[e.event_id] = reason + + if reason == RejectedReason.AUTH_ERROR: + pass + elif reason == RejectedReason.REPLACED: + # TODO: Get proof + pass + elif reason == RejectedReason.NOT_ANCESTOR: + # TODO: Get proof. + pass + + logger.debug("construct_auth_difference returning") + + defer.returnValue({ + "auth_chain": local_auth, + "rejects": { + e.event_id: { + "reason": reason_map[e.event_id], + "proof": None, + } + for e in base_remote_rejected + }, + "missing": [e.event_id for e in missing_locals], + }) diff --git a/synapse/handlers/message.py b/synapse/handlers/message.py index 9c3271fe88..6fbd2af4ab 100644 --- a/synapse/handlers/message.py +++ b/synapse/handlers/message.py @@ -114,7 +114,8 @@ class MessageHandler(BaseHandler): defer.returnValue(chunk) @defer.inlineCallbacks - def create_and_send_event(self, event_dict, ratelimit=True): + def create_and_send_event(self, event_dict, ratelimit=True, + client=None, txn_id=None): """ Given a dict from a client, create and handle a new event. Creates an FrozenEvent object, filling out auth_events, prev_events, @@ -148,6 +149,15 @@ class MessageHandler(BaseHandler): builder.content ) + if client is not None: + if client.token_id is not None: + builder.internal_metadata.token_id = client.token_id + if client.device_id is not None: + builder.internal_metadata.device_id = client.device_id + + if txn_id is not None: + builder.internal_metadata.txn_id = txn_id + event, context = yield self._create_new_client_event( builder=builder, ) diff --git a/synapse/handlers/presence.py b/synapse/handlers/presence.py index d66bfea7b1..cd0798c2b0 100644 --- a/synapse/handlers/presence.py +++ b/synapse/handlers/presence.py @@ -87,6 +87,10 @@ class PresenceHandler(BaseHandler): "changed_presencelike_data", self.changed_presencelike_data ) + # outbound signal from the presence module to advertise when a user's + # presence has changed + distributor.declare("user_presence_changed") + self.distributor = distributor self.federation = hs.get_replication_layer() @@ -604,6 +608,7 @@ class PresenceHandler(BaseHandler): room_ids=room_ids, statuscache=statuscache, ) + yield self.distributor.fire("user_presence_changed", user, statuscache) @defer.inlineCallbacks def _push_presence_remote(self, user, destination, state=None): diff --git a/synapse/handlers/register.py b/synapse/handlers/register.py index 732652c228..66a89c10b2 100644 --- a/synapse/handlers/register.py +++ b/synapse/handlers/register.py @@ -163,7 +163,7 @@ class RegistrationHandler(BaseHandler): # each request httpCli = SimpleHttpClient(self.hs) # XXX: make this configurable! - trustedIdServers = ['matrix.org:8090'] + trustedIdServers = ['matrix.org:8090', 'matrix.org'] if not creds['idServer'] in trustedIdServers: logger.warn('%s is not a trusted ID server: rejecting 3pid ' + 'credentials', creds['idServer']) diff --git a/synapse/handlers/sync.py b/synapse/handlers/sync.py new file mode 100644 index 0000000000..962686f4bb --- /dev/null +++ b/synapse/handlers/sync.py @@ -0,0 +1,434 @@ +# -*- coding: utf-8 -*- +# Copyright 2015 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. + +from ._base import BaseHandler + +from synapse.streams.config import PaginationConfig +from synapse.api.constants import Membership, EventTypes + +from twisted.internet import defer + +import collections +import logging + +logger = logging.getLogger(__name__) + + +SyncConfig = collections.namedtuple("SyncConfig", [ + "user", + "client_info", + "limit", + "gap", + "sort", + "backfill", + "filter", +]) + + +class RoomSyncResult(collections.namedtuple("RoomSyncResult", [ + "room_id", + "limited", + "published", + "events", + "state", + "prev_batch", + "ephemeral", +])): + __slots__ = [] + + def __nonzero__(self): + """Make the result appear empty if there are no updates. This is used + to tell if room needs to be part of the sync result. + """ + return bool(self.events or self.state or self.ephemeral) + + +class SyncResult(collections.namedtuple("SyncResult", [ + "next_batch", # Token for the next sync + "private_user_data", # List of private events for the user. + "public_user_data", # List of public events for all users. + "rooms", # RoomSyncResult for each room. +])): + __slots__ = [] + + def __nonzero__(self): + """Make the result appear empty if there are no updates. This is used + to tell if the notifier needs to wait for more events when polling for + events. + """ + return bool( + self.private_user_data or self.public_user_data or self.rooms + ) + + +class SyncHandler(BaseHandler): + + def __init__(self, hs): + super(SyncHandler, self).__init__(hs) + self.event_sources = hs.get_event_sources() + self.clock = hs.get_clock() + + @defer.inlineCallbacks + def wait_for_sync_for_user(self, sync_config, since_token=None, timeout=0): + """Get the sync for a client if we have new data for it now. Otherwise + wait for new data to arrive on the server. If the timeout expires, then + return an empty sync result. + Returns: + A Deferred SyncResult. + """ + if timeout == 0 or since_token is None: + result = yield self.current_sync_for_user(sync_config, since_token) + defer.returnValue(result) + else: + def current_sync_callback(): + return self.current_sync_for_user(sync_config, since_token) + + rm_handler = self.hs.get_handlers().room_member_handler + room_ids = yield rm_handler.get_rooms_for_user(sync_config.user) + result = yield self.notifier.wait_for_events( + sync_config.user, room_ids, + sync_config.filter, timeout, current_sync_callback + ) + defer.returnValue(result) + + def current_sync_for_user(self, sync_config, since_token=None): + """Get the sync for client needed to match what the server has now. + Returns: + A Deferred SyncResult. + """ + if since_token is None: + return self.initial_sync(sync_config) + else: + if sync_config.gap: + return self.incremental_sync_with_gap(sync_config, since_token) + else: + #TODO(mjark): Handle gapless sync + raise NotImplementedError() + + @defer.inlineCallbacks + def initial_sync(self, sync_config): + """Get a sync for a client which is starting without any state + Returns: + A Deferred SyncResult. + """ + if sync_config.sort == "timeline,desc": + # TODO(mjark): Handle going through events in reverse order?. + # What does "most recent events" mean when applying the limits mean + # in this case? + raise NotImplementedError() + + now_token = yield self.event_sources.get_current_token() + + presence_stream = self.event_sources.sources["presence"] + # TODO (mjark): This looks wrong, shouldn't we be getting the presence + # UP to the present rather than after the present? + pagination_config = PaginationConfig(from_token=now_token) + presence, _ = yield presence_stream.get_pagination_rows( + user=sync_config.user, + pagination_config=pagination_config.get_source_config("presence"), + key=None + ) + room_list = yield self.store.get_rooms_for_user_where_membership_is( + user_id=sync_config.user.to_string(), + membership_list=[Membership.INVITE, Membership.JOIN] + ) + + # TODO (mjark): Does public mean "published"? + published_rooms = yield self.store.get_rooms(is_public=True) + published_room_ids = set(r["room_id"] for r in published_rooms) + + rooms = [] + for event in room_list: + room_sync = yield self.initial_sync_for_room( + event.room_id, sync_config, now_token, published_room_ids + ) + rooms.append(room_sync) + + defer.returnValue(SyncResult( + public_user_data=presence, + private_user_data=[], + rooms=rooms, + next_batch=now_token, + )) + + @defer.inlineCallbacks + def initial_sync_for_room(self, room_id, sync_config, now_token, + published_room_ids): + """Sync a room for a client which is starting without any state + Returns: + A Deferred RoomSyncResult. + """ + + recents, prev_batch_token, limited = yield self.load_filtered_recents( + room_id, sync_config, now_token, + ) + + current_state_events = yield self.state_handler.get_current_state( + room_id + ) + + defer.returnValue(RoomSyncResult( + room_id=room_id, + published=room_id in published_room_ids, + events=recents, + prev_batch=prev_batch_token, + state=current_state_events, + limited=limited, + ephemeral=[], + )) + + @defer.inlineCallbacks + def incremental_sync_with_gap(self, sync_config, since_token): + """ Get the incremental delta needed to bring the client up to + date with the server. + Returns: + A Deferred SyncResult. + """ + if sync_config.sort == "timeline,desc": + # TODO(mjark): Handle going through events in reverse order?. + # What does "most recent events" mean when applying the limits mean + # in this case? + raise NotImplementedError() + + now_token = yield self.event_sources.get_current_token() + + presence_source = self.event_sources.sources["presence"] + presence, presence_key = yield presence_source.get_new_events_for_user( + user=sync_config.user, + from_key=since_token.presence_key, + limit=sync_config.limit, + ) + now_token = now_token.copy_and_replace("presence_key", presence_key) + + typing_source = self.event_sources.sources["typing"] + typing, typing_key = yield typing_source.get_new_events_for_user( + user=sync_config.user, + from_key=since_token.typing_key, + limit=sync_config.limit, + ) + now_token = now_token.copy_and_replace("typing_key", typing_key) + + typing_by_room = {event["room_id"]: [event] for event in typing} + for event in typing: + event.pop("room_id") + logger.debug("Typing %r", typing_by_room) + + rm_handler = self.hs.get_handlers().room_member_handler + room_ids = yield rm_handler.get_rooms_for_user(sync_config.user) + + # TODO (mjark): Does public mean "published"? + published_rooms = yield self.store.get_rooms(is_public=True) + published_room_ids = set(r["room_id"] for r in published_rooms) + + room_events, _ = yield self.store.get_room_events_stream( + sync_config.user.to_string(), + from_key=since_token.room_key, + to_key=now_token.room_key, + room_id=None, + limit=sync_config.limit + 1, + ) + + rooms = [] + if len(room_events) <= sync_config.limit: + # There is no gap in any of the rooms. Therefore we can just + # partition the new events by room and return them. + events_by_room_id = {} + for event in room_events: + events_by_room_id.setdefault(event.room_id, []).append(event) + + for room_id in room_ids: + recents = events_by_room_id.get(room_id, []) + state = [event for event in recents if event.is_state()] + if recents: + prev_batch = now_token.copy_and_replace( + "room_key", recents[0].internal_metadata.before + ) + else: + prev_batch = now_token + + state = yield self.check_joined_room( + sync_config, room_id, state + ) + + room_sync = RoomSyncResult( + room_id=room_id, + published=room_id in published_room_ids, + events=recents, + prev_batch=prev_batch, + state=state, + limited=False, + ephemeral=typing_by_room.get(room_id, []) + ) + if room_sync: + rooms.append(room_sync) + else: + for room_id in room_ids: + room_sync = yield self.incremental_sync_with_gap_for_room( + room_id, sync_config, since_token, now_token, + published_room_ids, typing_by_room + ) + if room_sync: + rooms.append(room_sync) + + defer.returnValue(SyncResult( + public_user_data=presence, + private_user_data=[], + rooms=rooms, + next_batch=now_token, + )) + + @defer.inlineCallbacks + def load_filtered_recents(self, room_id, sync_config, now_token, + since_token=None): + limited = True + recents = [] + filtering_factor = 2 + load_limit = max(sync_config.limit * filtering_factor, 100) + max_repeat = 3 # Only try a few times per room, otherwise + room_key = now_token.room_key + + while limited and len(recents) < sync_config.limit and max_repeat: + events, keys = yield self.store.get_recent_events_for_room( + room_id, + limit=load_limit + 1, + from_token=since_token.room_key if since_token else None, + end_token=room_key, + ) + (room_key, _) = keys + loaded_recents = sync_config.filter.filter_room_events(events) + loaded_recents.extend(recents) + recents = loaded_recents + if len(events) <= load_limit: + limited = False + max_repeat -= 1 + + if len(recents) > sync_config.limit: + recents = recents[-sync_config.limit:] + room_key = recents[0].internal_metadata.before + + prev_batch_token = now_token.copy_and_replace( + "room_key", room_key + ) + + defer.returnValue((recents, prev_batch_token, limited)) + + @defer.inlineCallbacks + def incremental_sync_with_gap_for_room(self, room_id, sync_config, + since_token, now_token, + published_room_ids, typing_by_room): + """ Get the incremental delta needed to bring the client up to date for + the room. Gives the client the most recent events and the changes to + state. + Returns: + A Deferred RoomSyncResult + """ + + # TODO(mjark): Check for redactions we might have missed. + + recents, prev_batch_token, limited = yield self.load_filtered_recents( + room_id, sync_config, now_token, since_token, + ) + + logging.debug("Recents %r", recents) + + # TODO(mjark): This seems racy since this isn't being passed a + # token to indicate what point in the stream this is + current_state_events = yield self.state_handler.get_current_state( + room_id + ) + + state_at_previous_sync = yield self.get_state_at_previous_sync( + room_id, since_token=since_token + ) + + state_events_delta = yield self.compute_state_delta( + since_token=since_token, + previous_state=state_at_previous_sync, + current_state=current_state_events, + ) + + state_events_delta = yield self.check_joined_room( + sync_config, room_id, state_events_delta + ) + + room_sync = RoomSyncResult( + room_id=room_id, + published=room_id in published_room_ids, + events=recents, + prev_batch=prev_batch_token, + state=state_events_delta, + limited=limited, + ephemeral=typing_by_room.get(room_id, []) + ) + + logging.debug("Room sync: %r", room_sync) + + defer.returnValue(room_sync) + + @defer.inlineCallbacks + def get_state_at_previous_sync(self, room_id, since_token): + """ Get the room state at the previous sync the client made. + Returns: + A Deferred list of Events. + """ + last_events, token = yield self.store.get_recent_events_for_room( + room_id, end_token=since_token.room_key, limit=1, + ) + + if last_events: + last_event = last_events[0] + last_context = yield self.state_handler.compute_event_context( + last_event + ) + if last_event.is_state(): + state = [last_event] + last_context.current_state.values() + else: + state = last_context.current_state.values() + else: + state = () + defer.returnValue(state) + + def compute_state_delta(self, since_token, previous_state, current_state): + """ Works out the differnce in state between the current state and the + state the client got when it last performed a sync. + Returns: + A list of events. + """ + # TODO(mjark) Check if the state events were received by the server + # after the previous sync, since we need to include those state + # updates even if they occured logically before the previous event. + # TODO(mjark) Check for new redactions in the state events. + previous_dict = {event.event_id: event for event in previous_state} + state_delta = [] + for event in current_state: + if event.event_id not in previous_dict: + state_delta.append(event) + return state_delta + + @defer.inlineCallbacks + def check_joined_room(self, sync_config, room_id, state_delta): + joined = False + for event in state_delta: + if ( + event.type == EventTypes.Member + and event.state_key == sync_config.user.to_string() + ): + if event.content["membership"] == Membership.JOIN: + joined = True + + if joined: + state_delta = yield self.state_handler.get_current_state(room_id) + + defer.returnValue(state_delta) |