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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.
62 lines
1.8 KiB
Python
62 lines
1.8 KiB
Python
# Copyright 2015, 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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import logging
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import simplejson
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from synapse.storage.prepare_database import get_statements
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logger = logging.getLogger(__name__)
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ALTER_TABLE = (
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"ALTER TABLE events ADD COLUMN origin_server_ts BIGINT;"
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"CREATE INDEX events_ts ON events(origin_server_ts, stream_ordering);"
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)
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def run_create(cur, database_engine, *args, **kwargs):
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for statement in get_statements(ALTER_TABLE.splitlines()):
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cur.execute(statement)
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cur.execute("SELECT MIN(stream_ordering) FROM events")
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rows = cur.fetchall()
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min_stream_id = rows[0][0]
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cur.execute("SELECT MAX(stream_ordering) FROM events")
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rows = cur.fetchall()
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max_stream_id = rows[0][0]
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if min_stream_id is not None and max_stream_id is not None:
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progress = {
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"target_min_stream_id_inclusive": min_stream_id,
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"max_stream_id_exclusive": max_stream_id + 1,
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"rows_inserted": 0,
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}
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progress_json = simplejson.dumps(progress)
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sql = (
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"INSERT into background_updates (update_name, progress_json)"
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" VALUES (?, ?)"
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)
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sql = database_engine.convert_param_style(sql)
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cur.execute(sql, ("event_origin_server_ts", progress_json))
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def run_upgrade(*args, **kwargs):
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pass
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