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48 lines
1.8 KiB
Python
48 lines
1.8 KiB
Python
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# Copyright 2022 The Matrix.org Foundation C.I.C
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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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import json
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from synapse.storage.types import Cursor
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def run_create(cur: Cursor, database_engine, *args, **kwargs):
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"""Add a bg update to populate the `state_key` and `rejection_reason` columns of `events`"""
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# we know that any new events will have the columns populated (and that has been
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# the case since schema_version 68, so there is no chance of rolling back now).
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#
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# So, we only need to make sure that existing rows are updated. We read the
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# current min and max stream orderings, since that is guaranteed to include all
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# the events that were stored before the new columns were added.
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cur.execute("SELECT MIN(stream_ordering), MAX(stream_ordering) FROM events")
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(min_stream_ordering, max_stream_ordering) = cur.fetchone()
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if min_stream_ordering is None:
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# no rows, nothing to do.
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return
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cur.execute(
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"INSERT into background_updates (ordering, update_name, progress_json)"
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" VALUES (7203, 'events_populate_state_key_rejections', ?)",
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(
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json.dumps(
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{
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"min_stream_ordering_exclusive": min_stream_ordering - 1,
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"max_stream_ordering_inclusive": max_stream_ordering,
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}
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),
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),
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)
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