75 lines
2.7 KiB
Python
75 lines
2.7 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 ceilometer.storage.hbase import utils as hbase_utils
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def migrate_resource_table(conn, table):
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"""Migrate table 'resource' in HBase.
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Change qualifiers format from "%s+%s+%s!%s!%s" %
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(rts, source, counter_name, counter_type,counter_unit)
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in columns with meters f:m_*
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to new separator format "%s:%s:%s:%s:%s" %
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(rts, source, counter_name, counter_type,counter_unit)
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"""
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resource_table = conn.table(table)
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resource_filter = ("QualifierFilter(=, "
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"'regexstring:m_\\d{19}\\+"
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"[\\w-\\._]*\\+[\\w-\\._!]')")
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gen = resource_table.scan(filter=resource_filter)
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for row, data in gen:
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columns = []
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updated_columns = dict()
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column_prefix = "f:"
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for column, value in data.items():
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if column.startswith('f:m_'):
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columns.append(column)
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parts = column[2:].split("+", 2)
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parts.extend(parts.pop(2).split("!"))
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column = hbase_utils.prepare_key(*parts)
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updated_columns[column_prefix + column] = value
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resource_table.put(row, updated_columns)
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resource_table.delete(row, columns)
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def migrate_meter_table(conn, table):
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"""Migrate table 'meter' in HBase.
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Change row format from "%s_%d_%s" % (counter_name, rts, message_signature)
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to new separator format "%s:%s:%s" % (counter_name, rts, message_signature)
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"""
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meter_table = conn.table(table)
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meter_filter = ("RowFilter(=, "
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"'regexstring:[\\w\\._-]*_\\d{19}_\\w*')")
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gen = meter_table.scan(filter=meter_filter)
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for row, data in gen:
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parts = row.rsplit('_', 2)
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new_row = hbase_utils.prepare_key(*parts)
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meter_table.put(new_row, data)
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meter_table.delete(row)
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TABLE_MIGRATION_FUNCS = {'resource': migrate_resource_table,
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'meter': migrate_meter_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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