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c66a06ac6b
This is in preparation for having multiple data stores that offer different functionality, e.g. splitting out state or event storage.
70 lines
2.9 KiB
Python
70 lines
2.9 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2016 OpenMarket Ltd
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# Copyright 2018 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 synapse.storage.data_stores.main.receipts import ReceiptsWorkerStore
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from ._base import BaseSlavedStore
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from ._slaved_id_tracker import SlavedIdTracker
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# So, um, we want to borrow a load of functions intended for reading from
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# a DataStore, but we don't want to take functions that either write to the
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# DataStore or are cached and don't have cache invalidation logic.
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#
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# Rather than write duplicate versions of those functions, or lift them to
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# a common base class, we going to grab the underlying __func__ object from
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# the method descriptor on the DataStore and chuck them into our class.
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class SlavedReceiptsStore(ReceiptsWorkerStore, BaseSlavedStore):
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def __init__(self, db_conn, hs):
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# We instantiate this first as the ReceiptsWorkerStore constructor
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# needs to be able to call get_max_receipt_stream_id
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self._receipts_id_gen = SlavedIdTracker(
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db_conn, "receipts_linearized", "stream_id"
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)
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super(SlavedReceiptsStore, self).__init__(db_conn, hs)
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def get_max_receipt_stream_id(self):
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return self._receipts_id_gen.get_current_token()
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def stream_positions(self):
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result = super(SlavedReceiptsStore, self).stream_positions()
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result["receipts"] = self._receipts_id_gen.get_current_token()
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return result
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def invalidate_caches_for_receipt(self, room_id, receipt_type, user_id):
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self.get_receipts_for_user.invalidate((user_id, receipt_type))
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self._get_linearized_receipts_for_room.invalidate_many((room_id,))
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self.get_last_receipt_event_id_for_user.invalidate(
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(user_id, room_id, receipt_type)
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)
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self._invalidate_get_users_with_receipts_in_room(room_id, receipt_type, user_id)
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self.get_receipts_for_room.invalidate((room_id, receipt_type))
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def process_replication_rows(self, stream_name, token, rows):
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if stream_name == "receipts":
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self._receipts_id_gen.advance(token)
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for row in rows:
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self.invalidate_caches_for_receipt(
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row.room_id, row.receipt_type, row.user_id
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)
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self._receipts_stream_cache.entity_has_changed(row.room_id, token)
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return super(SlavedReceiptsStore, self).process_replication_rows(
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stream_name, token, rows
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)
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