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![Erik Johnston](/assets/img/avatar_default.png)
If no `from` param is specified we calculate and use the "current token" that inlcuded typing, presence, etc. These are unused during pagination and are not available on workers, so we simply don't calculate them.
84 lines
3.0 KiB
Python
84 lines
3.0 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2014-2016 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 twisted.internet import defer
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from synapse.handlers.account_data import AccountDataEventSource
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from synapse.handlers.presence import PresenceEventSource
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from synapse.handlers.receipts import ReceiptEventSource
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from synapse.handlers.room import RoomEventSource
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from synapse.handlers.typing import TypingNotificationEventSource
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from synapse.types import StreamToken
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class EventSources(object):
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SOURCE_TYPES = {
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"room": RoomEventSource,
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"presence": PresenceEventSource,
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"typing": TypingNotificationEventSource,
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"receipt": ReceiptEventSource,
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"account_data": AccountDataEventSource,
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}
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def __init__(self, hs):
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self.sources = {
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name: cls(hs) for name, cls in EventSources.SOURCE_TYPES.items()
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}
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self.store = hs.get_datastore()
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@defer.inlineCallbacks
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def get_current_token(self):
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push_rules_key, _ = self.store.get_push_rules_stream_token()
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to_device_key = self.store.get_to_device_stream_token()
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device_list_key = self.store.get_device_stream_token()
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groups_key = self.store.get_group_stream_token()
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token = StreamToken(
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room_key=(yield self.sources["room"].get_current_key()),
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presence_key=(yield self.sources["presence"].get_current_key()),
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typing_key=(yield self.sources["typing"].get_current_key()),
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receipt_key=(yield self.sources["receipt"].get_current_key()),
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account_data_key=(yield self.sources["account_data"].get_current_key()),
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push_rules_key=push_rules_key,
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to_device_key=to_device_key,
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device_list_key=device_list_key,
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groups_key=groups_key,
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)
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defer.returnValue(token)
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@defer.inlineCallbacks
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def get_current_token_for_pagination(self):
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"""Get the current token for a given room to be used to paginate
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events.
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The returned token does not have the current values for fields other
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than `room`, since they are not used during pagination.
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Retuns:
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Deferred[StreamToken]
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"""
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token = StreamToken(
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room_key=(yield self.sources["room"].get_current_key()),
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presence_key=0,
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typing_key=0,
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receipt_key=0,
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account_data_key=0,
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push_rules_key=0,
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to_device_key=0,
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device_list_key=0,
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groups_key=0,
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)
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defer.returnValue(token)
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