mirror of
https://github.com/element-hq/synapse.git
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65 lines
2.3 KiB
Python
65 lines
2.3 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2017 Vector Creations Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import logging
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from twisted.internet import defer
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from synapse.util.async import Linearizer
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from ._base import BaseHandler
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logger = logging.getLogger(__name__)
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class ReadMarkerHandler(BaseHandler):
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def __init__(self, hs):
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super(ReadMarkerHandler, self).__init__(hs)
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self.server_name = hs.config.server_name
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self.store = hs.get_datastore()
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self.read_marker_linearizer = Linearizer(name="read_marker")
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self.notifier = hs.get_notifier()
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@defer.inlineCallbacks
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def received_client_read_marker(self, room_id, user_id, event_id):
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"""Updates the read marker for a given user in a given room if the event ID given
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is ahead in the stream relative to the current read marker.
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This uses a notifier to indicate that account data should be sent down /sync if
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the read marker has changed.
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"""
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with (yield self.read_marker_linearizer.queue((room_id, user_id))):
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existing_read_marker = yield self.store.get_account_data_for_room_and_type(
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user_id, room_id, "m.fully_read",
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)
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should_update = True
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if existing_read_marker:
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# Only update if the new marker is ahead in the stream
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should_update = yield self.store.is_event_after(
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event_id,
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existing_read_marker['event_id']
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)
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if should_update:
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content = {
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"event_id": event_id
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}
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max_id = yield self.store.add_account_data_to_room(
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user_id, room_id, "m.fully_read", content
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)
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self.notifier.on_new_event("account_data_key", max_id, users=[user_id])
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