b55ae36fcf
Currently there is no way to upgrade metadata definitions to the newest set. This change extends existing command: glance-manage db load_metadefs. The extension allows user to merge metadata definitions that are stored in files with data that exists in database. By default it prefers existing data over new (--merge), but it can be combined with other options to change this logic. Use --prefer_new flag so it will prefer new data over existing data in database or --overwrite so it will drop every namespace (and attached resources) found in both, database and file. By default glance-manage db load_metadefs works the same way it worked before extension. To enable new logic user needs to provide at least --merge option (or combine it with other two options) Implements: blueprint metadefs-upgrade-by-json-file Change-Id: I55fa6640142db5110deb88d9ecd8507e7f533c58
66 lines
2.1 KiB
Python
66 lines
2.1 KiB
Python
# Copyright 2010 United States Government as represented by the
|
|
# Administrator of the National Aeronautics and Space Administration.
|
|
# All Rights Reserved.
|
|
#
|
|
# Copyright 2013 OpenStack Foundation
|
|
# Copyright 2013 Intel Corporation
|
|
#
|
|
# 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.
|
|
|
|
"""Metadata setup commands."""
|
|
|
|
import threading
|
|
|
|
from oslo_config import cfg
|
|
from oslo_db import options as db_options
|
|
from stevedore import driver
|
|
|
|
from glance.db.sqlalchemy import api as db_api
|
|
|
|
|
|
_IMPL = None
|
|
_LOCK = threading.Lock()
|
|
|
|
db_options.set_defaults(cfg.CONF)
|
|
|
|
|
|
def get_backend():
|
|
global _IMPL
|
|
if _IMPL is None:
|
|
with _LOCK:
|
|
if _IMPL is None:
|
|
_IMPL = driver.DriverManager(
|
|
"glance.database.metadata_backend",
|
|
cfg.CONF.database.backend).driver
|
|
return _IMPL
|
|
|
|
|
|
def load_metadefs():
|
|
"""Read metadefinition files and insert data into the database"""
|
|
return get_backend().db_load_metadefs(engine=db_api.get_engine(),
|
|
metadata_path=None,
|
|
merge=False,
|
|
prefer_new=False,
|
|
overwrite=False)
|
|
|
|
|
|
def unload_metadefs():
|
|
"""Unload metadefinitions from database"""
|
|
return get_backend().db_unload_metadefs(engine=db_api.get_engine())
|
|
|
|
|
|
def export_metadefs():
|
|
"""Export metadefinitions from database to files"""
|
|
return get_backend().db_export_metadefs(engine=db_api.get_engine(),
|
|
metadata_path=None)
|