44 lines
1.4 KiB
Python
44 lines
1.4 KiB
Python
#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""HBase storage backend migrations
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"""
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from aodh.storage.hbase import utils as hbase_utils
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def migrate_alarm_history_table(conn, table):
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"""Migrate table 'alarm_h' in HBase.
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Change row format from ""%s_%s" % alarm_id, rts,
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to new separator format "%s:%s" % alarm_id, rts
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"""
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alarm_h_table = conn.table(table)
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alarm_h_filter = "RowFilter(=, 'regexstring:\\w*_\\d{19}')"
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gen = alarm_h_table.scan(filter=alarm_h_filter)
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for row, data in gen:
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row_parts = row.rsplit('_', 1)
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alarm_h_table.put(hbase_utils.prepare_key(*row_parts), data)
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alarm_h_table.delete(row)
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TABLE_MIGRATION_FUNCS = {'alarm_h': migrate_alarm_history_table}
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def migrate_tables(conn, tables):
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if type(tables) is not list:
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tables = [tables]
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for table in tables:
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if table in TABLE_MIGRATION_FUNCS:
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TABLE_MIGRATION_FUNCS.get(table)(conn, table)
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