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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 ujson
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_upgrade(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 = ujson.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))
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