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e263c26690
(See https://docs.google.com/document/d/1UWqdS-e1sdwkLDUY0wA4gZyIkRp-ekjsLZ8k6g_Zvso/edit#heading=h.lndohpg8at5u)
83 lines
2.7 KiB
Python
83 lines
2.7 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 twisted.internet import defer
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from synapse.util.logcontext import PreserveLoggingContext
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from synapse.types import get_domain_from_id
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import logging
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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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@defer.inlineCallbacks
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def received_client_read_marker(self, room_id, user_id, event_id):
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"""NEEDS DOC
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"""
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room_id = read_marker["room_id"]
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user_id = read_marker["user_id"]
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event_id = read_marker["event_id"]
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# Get ordering for existing read marker
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account_data = yield self.store.get_account_data_for_room(user_id, room_id)
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existing_read_marker = account_data["m.read_marker"]
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if existing_read_marker:
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# Get ordering for new read marker
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res = self.store._simple_select_one_txn(
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txn,
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table="events",
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retcols=["topological_ordering", "stream_ordering"],
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keyvalues={"event_id": event_id},
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allow_none=True
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)
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new_to = int(res["topological_ordering"]) if res else None
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new_so = int(res["stream_ordering"]) if res else None
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res = self.store._simple_select_one_txn(
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txn,
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table="events",
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retcols=["topological_ordering", "stream_ordering"],
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keyvalues={"event_id": existing_read_marker.content.marker},
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allow_none=True
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)
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existing_to = int(res["topological_ordering"]) if res else None
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existing_so = int(res["stream_ordering"]) if res else None
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if new_to > existing_to:
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return False
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elif new_to == existing_to and new_so >= existing_so:
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return False
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# Update account data
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content = {
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"marker": event_id
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}
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yield self.store.add_account_data_to_room(
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user_id, room_id, "m.read_marker", content
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)
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