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23740eaa3d
During the migration the automated script to update the copyright headers accidentally got rid of some of the existing copyright lines. Reinstate them.
78 lines
2.9 KiB
Python
78 lines
2.9 KiB
Python
#
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# This file is licensed under the Affero General Public License (AGPL) version 3.
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#
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# Copyright 2017 Vector Creations Ltd
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# Copyright (C) 2023 New Vector, Ltd
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# See the GNU Affero General Public License for more details:
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# <https://www.gnu.org/licenses/agpl-3.0.html>.
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#
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# Originally licensed under the Apache License, Version 2.0:
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# <http://www.apache.org/licenses/LICENSE-2.0>.
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#
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# [This file includes modifications made by New Vector Limited]
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#
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#
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import logging
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from typing import TYPE_CHECKING
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from synapse.api.constants import ReceiptTypes
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from synapse.api.errors import SynapseError
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from synapse.util.async_helpers import Linearizer
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if TYPE_CHECKING:
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from synapse.server import HomeServer
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logger = logging.getLogger(__name__)
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class ReadMarkerHandler:
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def __init__(self, hs: "HomeServer"):
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self.store = hs.get_datastores().main
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self.account_data_handler = hs.get_account_data_handler()
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self.read_marker_linearizer = Linearizer(name="read_marker")
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async def received_client_read_marker(
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self, room_id: str, user_id: str, event_id: str
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) -> None:
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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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async with self.read_marker_linearizer.queue((room_id, user_id)):
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existing_read_marker = await self.store.get_account_data_for_room_and_type(
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user_id, room_id, ReceiptTypes.FULLY_READ
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)
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should_update = True
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# Get event ordering, this also ensures we know about the event
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event_ordering = await self.store.get_event_ordering(event_id)
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if existing_read_marker:
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try:
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old_event_ordering = await self.store.get_event_ordering(
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existing_read_marker["event_id"]
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)
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except SynapseError:
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# Old event no longer exists, assume new is ahead. This may
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# happen if the old event was removed due to retention.
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pass
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else:
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# Only update if the new marker is ahead in the stream
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should_update = event_ordering > old_event_ordering
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if should_update:
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content = {"event_id": event_id}
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await self.account_data_handler.add_account_data_to_room(
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user_id, room_id, ReceiptTypes.FULLY_READ, content
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)
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