994 lines
36 KiB
Python
994 lines
36 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2015 - 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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from ._base import BaseHandler
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from synapse.streams.config import PaginationConfig
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from synapse.api.constants import Membership, EventTypes
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from synapse.util import unwrapFirstError
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from synapse.util.logcontext import LoggingContext, preserve_fn
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from synapse.util.metrics import Measure
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from twisted.internet import defer
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import collections
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import logging
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import itertools
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logger = logging.getLogger(__name__)
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SyncConfig = collections.namedtuple("SyncConfig", [
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"user",
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"filter_collection",
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"is_guest",
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])
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class TimelineBatch(collections.namedtuple("TimelineBatch", [
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"prev_batch",
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"events",
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"limited",
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])):
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__slots__ = []
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def __nonzero__(self):
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"""Make the result appear empty if there are no updates. This is used
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to tell if room needs to be part of the sync result.
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"""
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return bool(self.events)
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class JoinedSyncResult(collections.namedtuple("JoinedSyncResult", [
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"room_id", # str
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"timeline", # TimelineBatch
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"state", # dict[(str, str), FrozenEvent]
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"ephemeral",
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"account_data",
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"unread_notifications",
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])):
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__slots__ = []
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def __nonzero__(self):
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"""Make the result appear empty if there are no updates. This is used
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to tell if room needs to be part of the sync result.
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"""
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return bool(
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self.timeline
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or self.state
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or self.ephemeral
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or self.account_data
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# nb the notification count does not, er, count: if there's nothing
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# else in the result, we don't need to send it.
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)
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class ArchivedSyncResult(collections.namedtuple("ArchivedSyncResult", [
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"room_id", # str
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"timeline", # TimelineBatch
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"state", # dict[(str, str), FrozenEvent]
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"account_data",
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])):
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__slots__ = []
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def __nonzero__(self):
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"""Make the result appear empty if there are no updates. This is used
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to tell if room needs to be part of the sync result.
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"""
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return bool(
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self.timeline
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or self.state
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or self.account_data
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)
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class InvitedSyncResult(collections.namedtuple("InvitedSyncResult", [
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"room_id", # str
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"invite", # FrozenEvent: the invite event
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])):
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__slots__ = []
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def __nonzero__(self):
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"""Invited rooms should always be reported to the client"""
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return True
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class SyncResult(collections.namedtuple("SyncResult", [
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"next_batch", # Token for the next sync
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"presence", # List of presence events for the user.
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"account_data", # List of account_data events for the user.
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"joined", # JoinedSyncResult for each joined room.
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"invited", # InvitedSyncResult for each invited room.
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"archived", # ArchivedSyncResult for each archived room.
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])):
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__slots__ = []
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def __nonzero__(self):
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"""Make the result appear empty if there are no updates. This is used
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to tell if the notifier needs to wait for more events when polling for
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events.
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"""
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return bool(
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self.presence or
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self.joined or
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self.invited or
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self.archived or
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self.account_data
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)
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class SyncHandler(BaseHandler):
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def __init__(self, hs):
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super(SyncHandler, self).__init__(hs)
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self.event_sources = hs.get_event_sources()
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self.clock = hs.get_clock()
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@defer.inlineCallbacks
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def wait_for_sync_for_user(self, sync_config, since_token=None, timeout=0,
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full_state=False):
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"""Get the sync for a client if we have new data for it now. Otherwise
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wait for new data to arrive on the server. If the timeout expires, then
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return an empty sync result.
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Returns:
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A Deferred SyncResult.
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"""
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context = LoggingContext.current_context()
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if context:
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if since_token is None:
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context.tag = "initial_sync"
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elif full_state:
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context.tag = "full_state_sync"
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else:
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context.tag = "incremental_sync"
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if timeout == 0 or since_token is None or full_state:
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# we are going to return immediately, so don't bother calling
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# notifier.wait_for_events.
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result = yield self.current_sync_for_user(
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sync_config, since_token, full_state=full_state,
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)
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defer.returnValue(result)
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else:
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def current_sync_callback(before_token, after_token):
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return self.current_sync_for_user(sync_config, since_token)
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result = yield self.notifier.wait_for_events(
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sync_config.user.to_string(), timeout, current_sync_callback,
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from_token=since_token,
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)
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defer.returnValue(result)
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def current_sync_for_user(self, sync_config, since_token=None,
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full_state=False):
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"""Get the sync for client needed to match what the server has now.
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Returns:
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A Deferred SyncResult.
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"""
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if since_token is None or full_state:
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return self.full_state_sync(sync_config, since_token)
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else:
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return self.incremental_sync_with_gap(sync_config, since_token)
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@defer.inlineCallbacks
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def full_state_sync(self, sync_config, timeline_since_token):
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"""Get a sync for a client which is starting without any state.
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If a 'message_since_token' is given, only timeline events which have
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happened since that token will be returned.
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Returns:
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A Deferred SyncResult.
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"""
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now_token = yield self.event_sources.get_current_token()
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now_token, ephemeral_by_room = yield self.ephemeral_by_room(
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sync_config, now_token
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)
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presence_stream = self.event_sources.sources["presence"]
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# TODO (mjark): This looks wrong, shouldn't we be getting the presence
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# UP to the present rather than after the present?
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pagination_config = PaginationConfig(from_token=now_token)
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presence, _ = yield presence_stream.get_pagination_rows(
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user=sync_config.user,
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pagination_config=pagination_config.get_source_config("presence"),
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key=None
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)
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membership_list = (Membership.INVITE, Membership.JOIN)
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if sync_config.filter_collection.include_leave:
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membership_list += (Membership.LEAVE, Membership.BAN)
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room_list = yield self.store.get_rooms_for_user_where_membership_is(
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user_id=sync_config.user.to_string(),
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membership_list=membership_list
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)
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account_data, account_data_by_room = (
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yield self.store.get_account_data_for_user(
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sync_config.user.to_string()
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)
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)
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tags_by_room = yield self.store.get_tags_for_user(
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sync_config.user.to_string()
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)
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joined = []
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invited = []
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archived = []
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deferreds = []
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room_list_chunks = [room_list[i:i + 10] for i in xrange(0, len(room_list), 10)]
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for room_list_chunk in room_list_chunks:
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for event in room_list_chunk:
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if event.membership == Membership.JOIN:
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room_sync_deferred = preserve_fn(
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self.full_state_sync_for_joined_room
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)(
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room_id=event.room_id,
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sync_config=sync_config,
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now_token=now_token,
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timeline_since_token=timeline_since_token,
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ephemeral_by_room=ephemeral_by_room,
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tags_by_room=tags_by_room,
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account_data_by_room=account_data_by_room,
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)
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room_sync_deferred.addCallback(joined.append)
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deferreds.append(room_sync_deferred)
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elif event.membership == Membership.INVITE:
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invite = yield self.store.get_event(event.event_id)
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invited.append(InvitedSyncResult(
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room_id=event.room_id,
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invite=invite,
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))
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elif event.membership in (Membership.LEAVE, Membership.BAN):
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leave_token = now_token.copy_and_replace(
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"room_key", "s%d" % (event.stream_ordering,)
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)
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room_sync_deferred = preserve_fn(
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self.full_state_sync_for_archived_room
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)(
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sync_config=sync_config,
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room_id=event.room_id,
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leave_event_id=event.event_id,
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leave_token=leave_token,
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timeline_since_token=timeline_since_token,
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tags_by_room=tags_by_room,
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account_data_by_room=account_data_by_room,
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)
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room_sync_deferred.addCallback(archived.append)
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deferreds.append(room_sync_deferred)
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yield defer.gatherResults(
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deferreds, consumeErrors=True
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).addErrback(unwrapFirstError)
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account_data_for_user = sync_config.filter_collection.filter_account_data(
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self.account_data_for_user(account_data)
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)
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presence = sync_config.filter_collection.filter_presence(
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presence
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)
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defer.returnValue(SyncResult(
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presence=presence,
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account_data=account_data_for_user,
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joined=joined,
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invited=invited,
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archived=archived,
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next_batch=now_token,
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))
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@defer.inlineCallbacks
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def full_state_sync_for_joined_room(self, room_id, sync_config,
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now_token, timeline_since_token,
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ephemeral_by_room, tags_by_room,
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account_data_by_room):
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"""Sync a room for a client which is starting without any state
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Returns:
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A Deferred JoinedSyncResult.
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"""
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batch = yield self.load_filtered_recents(
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room_id, sync_config, now_token, since_token=timeline_since_token
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)
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room_sync = yield self.incremental_sync_with_gap_for_room(
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room_id, sync_config,
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now_token=now_token,
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since_token=timeline_since_token,
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ephemeral_by_room=ephemeral_by_room,
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tags_by_room=tags_by_room,
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account_data_by_room=account_data_by_room,
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batch=batch,
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full_state=True,
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)
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defer.returnValue(room_sync)
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def account_data_for_user(self, account_data):
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account_data_events = []
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for account_data_type, content in account_data.items():
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account_data_events.append({
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"type": account_data_type,
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"content": content,
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})
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return account_data_events
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def account_data_for_room(self, room_id, tags_by_room, account_data_by_room):
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account_data_events = []
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tags = tags_by_room.get(room_id)
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if tags is not None:
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account_data_events.append({
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"type": "m.tag",
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"content": {"tags": tags},
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})
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account_data = account_data_by_room.get(room_id, {})
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for account_data_type, content in account_data.items():
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account_data_events.append({
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"type": account_data_type,
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"content": content,
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})
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return account_data_events
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@defer.inlineCallbacks
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def ephemeral_by_room(self, sync_config, now_token, since_token=None):
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"""Get the ephemeral events for each room the user is in
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Args:
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sync_config (SyncConfig): The flags, filters and user for the sync.
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now_token (StreamToken): Where the server is currently up to.
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since_token (StreamToken): Where the server was when the client
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last synced.
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Returns:
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A tuple of the now StreamToken, updated to reflect the which typing
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events are included, and a dict mapping from room_id to a list of
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typing events for that room.
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"""
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with Measure(self.clock, "ephemeral_by_room"):
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typing_key = since_token.typing_key if since_token else "0"
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rooms = yield self.store.get_rooms_for_user(sync_config.user.to_string())
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room_ids = [room.room_id for room in rooms]
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typing_source = self.event_sources.sources["typing"]
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typing, typing_key = yield typing_source.get_new_events(
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user=sync_config.user,
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from_key=typing_key,
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limit=sync_config.filter_collection.ephemeral_limit(),
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room_ids=room_ids,
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is_guest=sync_config.is_guest,
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)
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now_token = now_token.copy_and_replace("typing_key", typing_key)
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ephemeral_by_room = {}
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for event in typing:
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# we want to exclude the room_id from the event, but modifying the
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# result returned by the event source is poor form (it might cache
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# the object)
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room_id = event["room_id"]
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event_copy = {k: v for (k, v) in event.iteritems()
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if k != "room_id"}
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ephemeral_by_room.setdefault(room_id, []).append(event_copy)
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receipt_key = since_token.receipt_key if since_token else "0"
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receipt_source = self.event_sources.sources["receipt"]
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receipts, receipt_key = yield receipt_source.get_new_events(
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user=sync_config.user,
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from_key=receipt_key,
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limit=sync_config.filter_collection.ephemeral_limit(),
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room_ids=room_ids,
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is_guest=sync_config.is_guest,
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)
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now_token = now_token.copy_and_replace("receipt_key", receipt_key)
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for event in receipts:
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room_id = event["room_id"]
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# exclude room id, as above
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event_copy = {k: v for (k, v) in event.iteritems()
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if k != "room_id"}
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ephemeral_by_room.setdefault(room_id, []).append(event_copy)
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defer.returnValue((now_token, ephemeral_by_room))
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def full_state_sync_for_archived_room(self, room_id, sync_config,
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leave_event_id, leave_token,
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timeline_since_token, tags_by_room,
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account_data_by_room):
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"""Sync a room for a client which is starting without any state
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Returns:
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A Deferred ArchivedSyncResult.
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"""
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return self.incremental_sync_for_archived_room(
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sync_config, room_id, leave_event_id, timeline_since_token, tags_by_room,
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account_data_by_room, full_state=True, leave_token=leave_token,
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)
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@defer.inlineCallbacks
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def incremental_sync_with_gap(self, sync_config, since_token):
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""" Get the incremental delta needed to bring the client up to
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date with the server.
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Returns:
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A Deferred SyncResult.
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"""
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now_token = yield self.event_sources.get_current_token()
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rooms = yield self.store.get_rooms_for_user(sync_config.user.to_string())
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room_ids = [room.room_id for room in rooms]
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presence_source = self.event_sources.sources["presence"]
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presence, presence_key = yield presence_source.get_new_events(
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user=sync_config.user,
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from_key=since_token.presence_key,
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limit=sync_config.filter_collection.presence_limit(),
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room_ids=room_ids,
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is_guest=sync_config.is_guest,
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)
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now_token = now_token.copy_and_replace("presence_key", presence_key)
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now_token, ephemeral_by_room = yield self.ephemeral_by_room(
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sync_config, now_token, since_token
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)
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rm_handler = self.hs.get_handlers().room_member_handler
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app_service = yield self.store.get_app_service_by_user_id(
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sync_config.user.to_string()
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)
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if app_service:
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rooms = yield self.store.get_app_service_rooms(app_service)
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joined_room_ids = set(r.room_id for r in rooms)
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else:
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joined_room_ids = yield rm_handler.get_joined_rooms_for_user(
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sync_config.user
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)
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user_id = sync_config.user.to_string()
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timeline_limit = sync_config.filter_collection.timeline_limit()
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tags_by_room = yield self.store.get_updated_tags(
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user_id,
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since_token.account_data_key,
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)
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account_data, account_data_by_room = (
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yield self.store.get_updated_account_data_for_user(
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user_id,
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since_token.account_data_key,
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)
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)
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# Get a list of membership change events that have happened.
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rooms_changed = yield self.store.get_membership_changes_for_user(
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user_id, since_token.room_key, now_token.room_key
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)
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mem_change_events_by_room_id = {}
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for event in rooms_changed:
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mem_change_events_by_room_id.setdefault(event.room_id, []).append(event)
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newly_joined_rooms = []
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archived = []
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invited = []
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for room_id, events in mem_change_events_by_room_id.items():
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non_joins = [e for e in events if e.membership != Membership.JOIN]
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has_join = len(non_joins) != len(events)
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# We want to figure out if we joined the room at some point since
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# the last sync (even if we have since left). This is to make sure
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# we do send down the room, and with full state, where necessary
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if room_id in joined_room_ids or has_join:
|
|
old_state = yield self.get_state_at(room_id, since_token)
|
|
old_mem_ev = old_state.get((EventTypes.Member, user_id), None)
|
|
if not old_mem_ev or old_mem_ev.membership != Membership.JOIN:
|
|
newly_joined_rooms.append(room_id)
|
|
|
|
if room_id in joined_room_ids:
|
|
continue
|
|
|
|
if not non_joins:
|
|
continue
|
|
|
|
# Only bother if we're still currently invited
|
|
should_invite = non_joins[-1].membership == Membership.INVITE
|
|
if should_invite:
|
|
room_sync = InvitedSyncResult(room_id, invite=non_joins[-1])
|
|
if room_sync:
|
|
invited.append(room_sync)
|
|
|
|
# Always include leave/ban events. Just take the last one.
|
|
# TODO: How do we handle ban -> leave in same batch?
|
|
leave_events = [
|
|
e for e in non_joins
|
|
if e.membership in (Membership.LEAVE, Membership.BAN)
|
|
]
|
|
|
|
if leave_events:
|
|
leave_event = leave_events[-1]
|
|
room_sync = yield self.incremental_sync_for_archived_room(
|
|
sync_config, room_id, leave_event.event_id, since_token,
|
|
tags_by_room, account_data_by_room,
|
|
full_state=room_id in newly_joined_rooms
|
|
)
|
|
if room_sync:
|
|
archived.append(room_sync)
|
|
|
|
# Get all events for rooms we're currently joined to.
|
|
room_to_events = yield self.store.get_room_events_stream_for_rooms(
|
|
room_ids=joined_room_ids,
|
|
from_key=since_token.room_key,
|
|
to_key=now_token.room_key,
|
|
limit=timeline_limit + 1,
|
|
)
|
|
|
|
joined = []
|
|
# We loop through all room ids, even if there are no new events, in case
|
|
# there are non room events taht we need to notify about.
|
|
for room_id in joined_room_ids:
|
|
room_entry = room_to_events.get(room_id, None)
|
|
|
|
if room_entry:
|
|
events, start_key = room_entry
|
|
|
|
prev_batch_token = now_token.copy_and_replace("room_key", start_key)
|
|
|
|
newly_joined_room = room_id in newly_joined_rooms
|
|
full_state = newly_joined_room
|
|
|
|
batch = yield self.load_filtered_recents(
|
|
room_id, sync_config, prev_batch_token,
|
|
since_token=since_token,
|
|
recents=events,
|
|
newly_joined_room=newly_joined_room,
|
|
)
|
|
else:
|
|
batch = TimelineBatch(
|
|
events=[],
|
|
prev_batch=since_token,
|
|
limited=False,
|
|
)
|
|
full_state = False
|
|
|
|
room_sync = yield self.incremental_sync_with_gap_for_room(
|
|
room_id=room_id,
|
|
sync_config=sync_config,
|
|
since_token=since_token,
|
|
now_token=now_token,
|
|
ephemeral_by_room=ephemeral_by_room,
|
|
tags_by_room=tags_by_room,
|
|
account_data_by_room=account_data_by_room,
|
|
batch=batch,
|
|
full_state=full_state,
|
|
)
|
|
if room_sync:
|
|
joined.append(room_sync)
|
|
|
|
# For each newly joined room, we want to send down presence of
|
|
# existing users.
|
|
presence_handler = self.hs.get_handlers().presence_handler
|
|
extra_presence_users = set()
|
|
for room_id in newly_joined_rooms:
|
|
users = yield self.store.get_users_in_room(event.room_id)
|
|
extra_presence_users.update(users)
|
|
|
|
# For each new member, send down presence.
|
|
for joined_sync in joined:
|
|
it = itertools.chain(joined_sync.timeline.events, joined_sync.state.values())
|
|
for event in it:
|
|
if event.type == EventTypes.Member:
|
|
if event.membership == Membership.JOIN:
|
|
extra_presence_users.add(event.state_key)
|
|
|
|
states = yield presence_handler.get_states(
|
|
[u for u in extra_presence_users if u != user_id],
|
|
as_event=True,
|
|
)
|
|
presence.extend(states)
|
|
|
|
account_data_for_user = sync_config.filter_collection.filter_account_data(
|
|
self.account_data_for_user(account_data)
|
|
)
|
|
|
|
presence = sync_config.filter_collection.filter_presence(
|
|
presence
|
|
)
|
|
|
|
defer.returnValue(SyncResult(
|
|
presence=presence,
|
|
account_data=account_data_for_user,
|
|
joined=joined,
|
|
invited=invited,
|
|
archived=archived,
|
|
next_batch=now_token,
|
|
))
|
|
|
|
@defer.inlineCallbacks
|
|
def load_filtered_recents(self, room_id, sync_config, now_token,
|
|
since_token=None, recents=None, newly_joined_room=False):
|
|
"""
|
|
:returns a Deferred TimelineBatch
|
|
"""
|
|
with Measure(self.clock, "load_filtered_recents"):
|
|
filtering_factor = 2
|
|
timeline_limit = sync_config.filter_collection.timeline_limit()
|
|
load_limit = max(timeline_limit * filtering_factor, 10)
|
|
max_repeat = 5 # Only try a few times per room, otherwise
|
|
room_key = now_token.room_key
|
|
end_key = room_key
|
|
|
|
if recents is None or newly_joined_room or timeline_limit < len(recents):
|
|
limited = True
|
|
else:
|
|
limited = False
|
|
|
|
if recents is not None:
|
|
recents = sync_config.filter_collection.filter_room_timeline(recents)
|
|
recents = yield self._filter_events_for_client(
|
|
sync_config.user.to_string(),
|
|
recents,
|
|
)
|
|
else:
|
|
recents = []
|
|
|
|
since_key = None
|
|
if since_token and not newly_joined_room:
|
|
since_key = since_token.room_key
|
|
|
|
while limited and len(recents) < timeline_limit and max_repeat:
|
|
events, end_key = yield self.store.get_room_events_stream_for_room(
|
|
room_id,
|
|
limit=load_limit + 1,
|
|
from_key=since_key,
|
|
to_key=end_key,
|
|
)
|
|
loaded_recents = sync_config.filter_collection.filter_room_timeline(
|
|
events
|
|
)
|
|
loaded_recents = yield self._filter_events_for_client(
|
|
sync_config.user.to_string(),
|
|
loaded_recents,
|
|
)
|
|
loaded_recents.extend(recents)
|
|
recents = loaded_recents
|
|
|
|
if len(events) <= load_limit:
|
|
limited = False
|
|
break
|
|
max_repeat -= 1
|
|
|
|
if len(recents) > timeline_limit:
|
|
limited = True
|
|
recents = recents[-timeline_limit:]
|
|
room_key = recents[0].internal_metadata.before
|
|
|
|
prev_batch_token = now_token.copy_and_replace(
|
|
"room_key", room_key
|
|
)
|
|
|
|
defer.returnValue(TimelineBatch(
|
|
events=recents,
|
|
prev_batch=prev_batch_token,
|
|
limited=limited or newly_joined_room
|
|
))
|
|
|
|
@defer.inlineCallbacks
|
|
def incremental_sync_with_gap_for_room(self, room_id, sync_config,
|
|
since_token, now_token,
|
|
ephemeral_by_room, tags_by_room,
|
|
account_data_by_room,
|
|
batch, full_state=False):
|
|
state = yield self.compute_state_delta(
|
|
room_id, batch, sync_config, since_token, now_token,
|
|
full_state=full_state
|
|
)
|
|
|
|
account_data = self.account_data_for_room(
|
|
room_id, tags_by_room, account_data_by_room
|
|
)
|
|
|
|
account_data = sync_config.filter_collection.filter_room_account_data(
|
|
account_data
|
|
)
|
|
|
|
ephemeral = sync_config.filter_collection.filter_room_ephemeral(
|
|
ephemeral_by_room.get(room_id, [])
|
|
)
|
|
|
|
unread_notifications = {}
|
|
room_sync = JoinedSyncResult(
|
|
room_id=room_id,
|
|
timeline=batch,
|
|
state=state,
|
|
ephemeral=ephemeral,
|
|
account_data=account_data,
|
|
unread_notifications=unread_notifications,
|
|
)
|
|
|
|
if room_sync:
|
|
notifs = yield self.unread_notifs_for_room_id(
|
|
room_id, sync_config
|
|
)
|
|
|
|
if notifs is not None:
|
|
unread_notifications["notification_count"] = notifs["notify_count"]
|
|
unread_notifications["highlight_count"] = notifs["highlight_count"]
|
|
|
|
logger.debug("Room sync: %r", room_sync)
|
|
|
|
defer.returnValue(room_sync)
|
|
|
|
@defer.inlineCallbacks
|
|
def incremental_sync_for_archived_room(self, sync_config, room_id, leave_event_id,
|
|
since_token, tags_by_room,
|
|
account_data_by_room, full_state,
|
|
leave_token=None):
|
|
""" Get the incremental delta needed to bring the client up to date for
|
|
the archived room.
|
|
Returns:
|
|
A Deferred ArchivedSyncResult
|
|
"""
|
|
|
|
if not leave_token:
|
|
stream_token = yield self.store.get_stream_token_for_event(
|
|
leave_event_id
|
|
)
|
|
|
|
leave_token = since_token.copy_and_replace("room_key", stream_token)
|
|
|
|
if since_token and since_token.is_after(leave_token):
|
|
defer.returnValue(None)
|
|
|
|
batch = yield self.load_filtered_recents(
|
|
room_id, sync_config, leave_token, since_token,
|
|
)
|
|
|
|
logger.debug("Recents %r", batch)
|
|
|
|
state_events_delta = yield self.compute_state_delta(
|
|
room_id, batch, sync_config, since_token, leave_token,
|
|
full_state=full_state
|
|
)
|
|
|
|
account_data = self.account_data_for_room(
|
|
room_id, tags_by_room, account_data_by_room
|
|
)
|
|
|
|
account_data = sync_config.filter_collection.filter_room_account_data(
|
|
account_data
|
|
)
|
|
|
|
room_sync = ArchivedSyncResult(
|
|
room_id=room_id,
|
|
timeline=batch,
|
|
state=state_events_delta,
|
|
account_data=account_data,
|
|
)
|
|
|
|
logger.debug("Room sync: %r", room_sync)
|
|
|
|
defer.returnValue(room_sync)
|
|
|
|
@defer.inlineCallbacks
|
|
def get_state_after_event(self, event):
|
|
"""
|
|
Get the room state after the given event
|
|
|
|
:param synapse.events.EventBase event: event of interest
|
|
:return: A Deferred map from ((type, state_key)->Event)
|
|
"""
|
|
state = yield self.store.get_state_for_event(event.event_id)
|
|
if event.is_state():
|
|
state = state.copy()
|
|
state[(event.type, event.state_key)] = event
|
|
defer.returnValue(state)
|
|
|
|
@defer.inlineCallbacks
|
|
def get_state_at(self, room_id, stream_position):
|
|
""" Get the room state at a particular stream position
|
|
:param str room_id: room for which to get state
|
|
:param StreamToken stream_position: point at which to get state
|
|
:returns: A Deferred map from ((type, state_key)->Event)
|
|
"""
|
|
last_events, token = yield self.store.get_recent_events_for_room(
|
|
room_id, end_token=stream_position.room_key, limit=1,
|
|
)
|
|
|
|
if last_events:
|
|
last_event = last_events[-1]
|
|
state = yield self.get_state_after_event(last_event)
|
|
|
|
else:
|
|
# no events in this room - so presumably no state
|
|
state = {}
|
|
defer.returnValue(state)
|
|
|
|
@defer.inlineCallbacks
|
|
def compute_state_delta(self, room_id, batch, sync_config, since_token, now_token,
|
|
full_state):
|
|
""" Works out the differnce in state between the start of the timeline
|
|
and the previous sync.
|
|
|
|
:param str room_id
|
|
:param TimelineBatch batch: The timeline batch for the room that will
|
|
be sent to the user.
|
|
:param sync_config
|
|
:param str since_token: Token of the end of the previous batch. May be None.
|
|
:param str now_token: Token of the end of the current batch.
|
|
:param bool full_state: Whether to force returning the full state.
|
|
|
|
:returns A new event dictionary
|
|
"""
|
|
# 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.
|
|
|
|
with Measure(self.clock, "compute_state_delta"):
|
|
if full_state:
|
|
if batch:
|
|
current_state = yield self.store.get_state_for_event(
|
|
batch.events[-1].event_id
|
|
)
|
|
|
|
state = yield self.store.get_state_for_event(
|
|
batch.events[0].event_id
|
|
)
|
|
else:
|
|
current_state = yield self.get_state_at(
|
|
room_id, stream_position=now_token
|
|
)
|
|
|
|
state = current_state
|
|
|
|
timeline_state = {
|
|
(event.type, event.state_key): event
|
|
for event in batch.events if event.is_state()
|
|
}
|
|
|
|
state = _calculate_state(
|
|
timeline_contains=timeline_state,
|
|
timeline_start=state,
|
|
previous={},
|
|
current=current_state,
|
|
)
|
|
elif batch.limited:
|
|
state_at_previous_sync = yield self.get_state_at(
|
|
room_id, stream_position=since_token
|
|
)
|
|
|
|
current_state = yield self.store.get_state_for_event(
|
|
batch.events[-1].event_id
|
|
)
|
|
|
|
state_at_timeline_start = yield self.store.get_state_for_event(
|
|
batch.events[0].event_id
|
|
)
|
|
|
|
timeline_state = {
|
|
(event.type, event.state_key): event
|
|
for event in batch.events if event.is_state()
|
|
}
|
|
|
|
state = _calculate_state(
|
|
timeline_contains=timeline_state,
|
|
timeline_start=state_at_timeline_start,
|
|
previous=state_at_previous_sync,
|
|
current=current_state,
|
|
)
|
|
else:
|
|
state = {}
|
|
|
|
defer.returnValue({
|
|
(e.type, e.state_key): e
|
|
for e in sync_config.filter_collection.filter_room_state(state.values())
|
|
})
|
|
|
|
def check_joined_room(self, sync_config, state_delta):
|
|
"""
|
|
Check if the user has just joined the given room (so should
|
|
be given the full state)
|
|
|
|
:param sync_config:
|
|
:param dict[(str,str), synapse.events.FrozenEvent] state_delta: the
|
|
difference in state since the last sync
|
|
|
|
:returns A deferred Tuple (state_delta, limited)
|
|
"""
|
|
join_event = state_delta.get((
|
|
EventTypes.Member, sync_config.user.to_string()), None)
|
|
if join_event is not None:
|
|
if join_event.content["membership"] == Membership.JOIN:
|
|
return True
|
|
return False
|
|
|
|
@defer.inlineCallbacks
|
|
def unread_notifs_for_room_id(self, room_id, sync_config):
|
|
with Measure(self.clock, "unread_notifs_for_room_id"):
|
|
last_unread_event_id = yield self.store.get_last_receipt_event_id_for_user(
|
|
user_id=sync_config.user.to_string(),
|
|
room_id=room_id,
|
|
receipt_type="m.read"
|
|
)
|
|
|
|
notifs = []
|
|
if last_unread_event_id:
|
|
notifs = yield self.store.get_unread_event_push_actions_by_room_for_user(
|
|
room_id, sync_config.user.to_string(), last_unread_event_id
|
|
)
|
|
defer.returnValue(notifs)
|
|
|
|
# There is no new information in this period, so your notification
|
|
# count is whatever it was last time.
|
|
defer.returnValue(None)
|
|
|
|
|
|
def _action_has_highlight(actions):
|
|
for action in actions:
|
|
try:
|
|
if action.get("set_tweak", None) == "highlight":
|
|
return action.get("value", True)
|
|
except AttributeError:
|
|
pass
|
|
|
|
return False
|
|
|
|
|
|
def _calculate_state(timeline_contains, timeline_start, previous, current):
|
|
"""Works out what state to include in a sync response.
|
|
|
|
Args:
|
|
timeline_contains (dict): state in the timeline
|
|
timeline_start (dict): state at the start of the timeline
|
|
previous (dict): state at the end of the previous sync (or empty dict
|
|
if this is an initial sync)
|
|
current (dict): state at the end of the timeline
|
|
|
|
Returns:
|
|
dict
|
|
"""
|
|
event_id_to_state = {
|
|
e.event_id: e
|
|
for e in itertools.chain(
|
|
timeline_contains.values(),
|
|
previous.values(),
|
|
timeline_start.values(),
|
|
current.values(),
|
|
)
|
|
}
|
|
|
|
c_ids = set(e.event_id for e in current.values())
|
|
tc_ids = set(e.event_id for e in timeline_contains.values())
|
|
p_ids = set(e.event_id for e in previous.values())
|
|
ts_ids = set(e.event_id for e in timeline_start.values())
|
|
|
|
state_ids = ((c_ids | ts_ids) - p_ids) - tc_ids
|
|
|
|
evs = (event_id_to_state[e] for e in state_ids)
|
|
return {
|
|
(e.type, e.state_key): e
|
|
for e in evs
|
|
}
|