Add a tool for migrating alarms data from NoSQL to SQL
blueprint only-support-sqlalchemy-in-aodh Change-Id: If0ac3e530ab007118dfd5b842826ba95613ac61d
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liusheng
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aodh/cmd/data_migration.py
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162
aodh/cmd/data_migration.py
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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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"""
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A tool for migrating alarms and alarms history data from NoSQL to SQL.
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NOTES:
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- Users need to specify the source NoSQL connection url and the destination SQL
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connection URL with this tool, an usage example:
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aodh-data-migration --nosql-conn \
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mongodb://aodh:password@127.0.0.1:27017/aodh --sql-conn \
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mysql+pymysql://root:password@127.0.0.1/aodh?charset=utf8
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- Both the alarm data and alarm history data will be migrated when running this
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tool, but the history data migration can be avoid by specifying False of
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--migrate-history option.
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- It is better to ensure the db connection is OK when running this tool, and
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this tool can be run repeatedly, the duplicated data will be skipped.
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- This tool depends on the NoSQL and SQL drivers of Aodh, so it is should be
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used only before the removal of NoSQL drivers.
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- This tool has been tested OK in devstack environment, but users need to be
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cautious with this, because the data migration between storage backends is
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a bit dangerous.
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"""
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import argparse
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import logging
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import sys
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from oslo_config import cfg
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from oslo_db import exception
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from oslo_db import options as db_options
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from aodh.i18n import _LE, _LI, _LW
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import six.moves.urllib.parse as urlparse
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from aodh import storage
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root_logger = logging.getLogger('')
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def get_parser():
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parser = argparse.ArgumentParser(
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description='A tool for Migrating alarms and alarms history from'
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' NoSQL to SQL',
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)
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parser.add_argument(
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'--nosql-conn',
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required=True,
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type=str,
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help='The source NoSQL database connection.',
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)
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parser.add_argument(
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'--sql-conn',
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required=True,
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type=str,
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help='The destination SQL database connection.',
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)
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parser.add_argument(
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'--migrate-history',
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default=True,
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type=bool,
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help='Migrate history data when migrate alarms or not,'
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' True as Default.',
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)
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parser.add_argument(
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'--debug',
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default=False,
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action='store_true',
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help='Show the debug level log messages.',
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)
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return parser
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def _validate_conn_options(args):
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nosql_scheme = urlparse.urlparse(args.nosql_conn).scheme
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sql_scheme = urlparse.urlparse(args.sql_conn).scheme
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if nosql_scheme not in ('mongodb', 'hbase'):
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root_logger.error(_LE('Invalid source DB type %s, the source database '
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'connection should be one of: [mongodb, hbase]'
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), nosql_scheme)
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sys.exit(1)
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if sql_scheme not in ('mysql', 'mysql+pymysql', 'postgresql',
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'sqlite'):
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root_logger.error(_LE('Invalid destination DB type %s, the destination'
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' database connection should be one of: '
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'[mysql, postgresql, sqlite]'), sql_scheme)
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sys.exit(1)
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def main():
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args = get_parser().parse_args()
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# Set up logging to use the console
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console = logging.StreamHandler(sys.stderr)
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formatter = logging.Formatter(
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'[%(asctime)s] %(levelname)-8s %(message)s')
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console.setFormatter(formatter)
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root_logger.addHandler(console)
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if args.debug:
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root_logger.setLevel(logging.DEBUG)
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else:
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root_logger.setLevel(logging.INFO)
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_validate_conn_options(args)
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nosql_conf = cfg.ConfigOpts()
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db_options.set_defaults(nosql_conf, args.nosql_conn)
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nosql_conf.register_opts(storage.OPTS, 'database')
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nosql_conn = storage.get_connection_from_config(nosql_conf)
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sql_conf = cfg.ConfigOpts()
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db_options.set_defaults(sql_conf, args.sql_conn)
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sql_conf.register_opts(storage.OPTS, 'database')
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sql_conn = storage.get_connection_from_config(sql_conf)
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root_logger.info(
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_LI("Starting to migrate alarms data from NoSQL to SQL..."))
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count = 0
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for alarm in nosql_conn.get_alarms():
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root_logger.debug("Migrating alarm %s..." % alarm.alarm_id)
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try:
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sql_conn.create_alarm(alarm)
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count += 1
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except exception.DBDuplicateEntry:
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root_logger.warning(_LW("Duplicated alarm %s found, skipped."),
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alarm.alarm_id)
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if not args.migrate_history:
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continue
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history_count = 0
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for history in nosql_conn.get_alarm_changes(alarm.alarm_id, None):
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history_data = history.as_dict()
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root_logger.debug(" Migrating alarm history data with"
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" event_id %s..." % history_data['event_id'])
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try:
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sql_conn.record_alarm_change(history_data)
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history_count += 1
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except exception.DBDuplicateEntry:
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root_logger.warning(
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_LW(" Duplicated alarm history %s found, skipped."),
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history_data['event_id'])
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root_logger.info(_LI(" Migrated %(count)s history data of alarm "
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"%(alarm_id)s"),
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{'count': history_count, 'alarm_id': alarm.alarm_id})
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root_logger.info(_LI("End alarms data migration from NoSQL to SQL, %s"
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" alarms have been migrated."), count)
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112
aodh/tests/functional/storage/test_data_migration.py
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112
aodh/tests/functional/storage/test_data_migration.py
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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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import datetime
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import uuid
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import mock
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from oslo_config import fixture as fixture_config
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from aodh.cmd import data_migration
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from aodh import service
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from aodh import storage
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from aodh.storage import models as alarm_models
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from aodh.tests.functional import db as tests_db
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from aodh.tests.functional.storage import test_storage_scenarios
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@tests_db.run_with('hbase', 'mongodb')
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class TestDataMigration(test_storage_scenarios.AlarmTestBase):
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def setUp(self):
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sql_conf = service.prepare_service(argv=[], config_files=[])
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self.sql_conf = self.useFixture(fixture_config.Config(sql_conf)).conf
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# using sqlite to represent the type of SQL dbs
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self.sql_conf.set_override('connection', "sqlite://",
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group="database", enforce_type=True)
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self.sql_namager = tests_db.SQLiteManager(self.sql_conf)
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self.useFixture(self.sql_namager)
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self.sql_conf.set_override('connection', self.sql_namager.url,
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group="database", enforce_type=True)
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self.sql_alarm_conn = storage.get_connection_from_config(self.sql_conf)
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self.sql_alarm_conn.upgrade()
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super(TestDataMigration, self).setUp()
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self.add_some_alarms()
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self._add_some_alarm_changes()
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def tearDown(self):
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self.sql_alarm_conn.clear()
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self.sql_alarm_conn = None
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super(TestDataMigration, self).tearDown()
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def _add_some_alarm_changes(self):
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alarms = list(self.alarm_conn.get_alarms())
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i = 0
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for alarm in alarms:
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for change_type in [alarm_models.AlarmChange.CREATION,
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alarm_models.AlarmChange.RULE_CHANGE,
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alarm_models.AlarmChange.STATE_TRANSITION,
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alarm_models.AlarmChange.STATE_TRANSITION,
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alarm_models.AlarmChange.STATE_TRANSITION]:
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alarm_change = {
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"event_id": str(uuid.uuid4()),
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"alarm_id": alarm.alarm_id,
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"type": change_type,
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"detail": "detail %s" % alarm.name,
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"user_id": alarm.user_id,
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"project_id": alarm.project_id,
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"on_behalf_of": alarm.project_id,
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"timestamp": datetime.datetime(2014, 4, 7, 7, 30 + i)
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}
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self.alarm_conn.record_alarm_change(alarm_change=alarm_change)
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i += 1
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def test_data_migration_without_history_data(self):
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alarms = list(self.alarm_conn.get_alarms())
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self.assertEqual(3, len(alarms))
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alarms_sql = list(self.sql_alarm_conn.get_alarms())
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self.assertEqual(0, len(alarms_sql))
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test_args = data_migration.get_parser().parse_args(
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['--sql-conn', 'sqlite://', '--nosql-conn',
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self.CONF.database.connection, '--migrate-history', False])
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with mock.patch('argparse.ArgumentParser.parse_args') as args_parser:
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# because get_connection_from_config has been mocked in
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# aodh.tests.functional.db.TestBase#setUp, here re-mocked it that
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# this test can get nosql and sql storage connections
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with mock.patch('aodh.storage.get_connection_from_config') as conn:
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conn.side_effect = [self.alarm_conn, self.sql_alarm_conn]
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args_parser.return_value = test_args
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data_migration.main()
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alarms_sql = list(self.sql_alarm_conn.get_alarms())
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alarm_changes = list(self.sql_alarm_conn.query_alarm_history())
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self.assertEqual(0, len(alarm_changes))
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self.assertEqual(3, len(alarms_sql))
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self.assertEqual(sorted([a.alarm_id for a in alarms]),
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sorted([a.alarm_id for a in alarms_sql]))
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def test_data_migration_with_history_data(self):
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test_args = data_migration.get_parser().parse_args(
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['--sql-conn', 'sqlite://', '--nosql-conn',
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self.CONF.database.connection])
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with mock.patch('argparse.ArgumentParser.parse_args') as args_parser:
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# because get_connection_from_config has been mocked in
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# aodh.tests.functional.db.TestBase#setUp, here re-mocked it that
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# this test can get nosql and sql storage connections
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with mock.patch('aodh.storage.get_connection_from_config') as conn:
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conn.side_effect = [self.alarm_conn, self.sql_alarm_conn]
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args_parser.return_value = test_args
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data_migration.main()
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alarms_sql = list(self.sql_alarm_conn.get_alarms())
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self.assertEqual(3, len(alarms_sql))
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for alarm in alarms_sql:
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changes = list(self.sql_alarm_conn.get_alarm_changes(
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alarm.alarm_id, alarm.project_id))
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self.assertEqual(5, len(changes))
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@ -0,0 +1,7 @@
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---
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upgrade:
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- >
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Add a tool for migrating alarm and alarm history data from NoSQL storage
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to SQL storage. The migration tool has been tested OK in devstack
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environment, but users need to be cautious with this, because the data
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migration between storage backends is a bit dangerous.
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