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https://git.anonymousland.org/anonymousland/synapse-product.git
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67ff7b8ba0
The general idea here is to get rid of the type: ignore annotations on all of the current_token and update_function assignments, which would have caught #7290. After a bit of experimentation, it seems like the least-awful way to do this is to pass the offending functions in as parameters to the Stream constructor. Unfortunately that means that the concrete implementations no longer have the same constructor signature as Stream itself, which means that it gets hard to correctly annotate STREAMS_MAP. I've also introduced a couple of new types, to take out some duplication.
56 lines
2.0 KiB
Python
56 lines
2.0 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2017 Vector Creations Ltd
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# Copyright 2019 New Vector 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 collections import namedtuple
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from synapse.replication.tcp.streams._base import Stream, db_query_to_update_function
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class FederationStream(Stream):
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"""Data to be sent over federation. Only available when master has federation
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sending disabled.
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"""
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FederationStreamRow = namedtuple(
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"FederationStreamRow",
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(
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"type", # str, the type of data as defined in the BaseFederationRows
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"data", # dict, serialization of a federation.send_queue.BaseFederationRow
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),
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)
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NAME = "federation"
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ROW_TYPE = FederationStreamRow
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def __init__(self, hs):
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# Not all synapse instances will have a federation sender instance,
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# whether that's a `FederationSender` or a `FederationRemoteSendQueue`,
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# so we stub the stream out when that is the case.
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if hs.config.worker_app is None or hs.should_send_federation():
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federation_sender = hs.get_federation_sender()
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current_token = federation_sender.get_current_token
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update_function = db_query_to_update_function(
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federation_sender.get_replication_rows
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)
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else:
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current_token = lambda: 0
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update_function = self._stub_update_function
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super().__init__(current_token, update_function)
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@staticmethod
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async def _stub_update_function(from_token, upto_token, limit):
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return [], upto_token, False
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