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- # Copyright 2015, 2016 OpenMarket Ltd
- #
- # Licensed under the Apache License, Version 2.0 (the "License");
- # you may not use this file except in compliance with the License.
- # You may obtain a copy of the License at
- #
- # http://www.apache.org/licenses/LICENSE-2.0
- #
- # Unless required by applicable law or agreed to in writing, software
- # distributed under the License is distributed on an "AS IS" BASIS,
- # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- # See the License for the specific language governing permissions and
- # limitations under the License.
- import logging
- from synapse.storage.prepare_database import get_statements
- import simplejson
- logger = logging.getLogger(__name__)
- ALTER_TABLE = (
- "ALTER TABLE events ADD COLUMN origin_server_ts BIGINT;"
- "CREATE INDEX events_ts ON events(origin_server_ts, stream_ordering);"
- )
- def run_create(cur, database_engine, *args, **kwargs):
- for statement in get_statements(ALTER_TABLE.splitlines()):
- cur.execute(statement)
- cur.execute("SELECT MIN(stream_ordering) FROM events")
- rows = cur.fetchall()
- min_stream_id = rows[0][0]
- cur.execute("SELECT MAX(stream_ordering) FROM events")
- rows = cur.fetchall()
- max_stream_id = rows[0][0]
- if min_stream_id is not None and max_stream_id is not None:
- progress = {
- "target_min_stream_id_inclusive": min_stream_id,
- "max_stream_id_exclusive": max_stream_id + 1,
- "rows_inserted": 0,
- }
- progress_json = simplejson.dumps(progress)
- sql = (
- "INSERT into background_updates (update_name, progress_json)"
- " VALUES (?, ?)"
- )
- sql = database_engine.convert_param_style(sql)
- cur.execute(sql, ("event_origin_server_ts", progress_json))
- def run_upgrade(*args, **kwargs):
- pass
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