101 lines
3.4 KiB
Python
101 lines
3.4 KiB
Python
# Copyright 2016 Rackspace
|
|
# 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.
|
|
|
|
import os
|
|
import sys
|
|
|
|
from alembic import command as alembic_command
|
|
from alembic import config as alembic_config
|
|
from alembic import migration as alembic_migration
|
|
from oslo_db import exception as db_exception
|
|
from oslo_db.sqlalchemy import migration as sqla_migration
|
|
|
|
from glance.db import migration as db_migration
|
|
from glance.db.sqlalchemy import api as db_api
|
|
from glance.i18n import _
|
|
|
|
|
|
def get_alembic_config(engine=None):
|
|
"""Return a valid alembic config object"""
|
|
ini_path = os.path.join(os.path.dirname(__file__), 'alembic.ini')
|
|
config = alembic_config.Config(os.path.abspath(ini_path))
|
|
if engine is None:
|
|
engine = db_api.get_engine()
|
|
config.set_main_option('sqlalchemy.url', str(engine.url))
|
|
return config
|
|
|
|
|
|
def get_current_alembic_heads():
|
|
"""Return current heads (if any) from the alembic migration table"""
|
|
engine = db_api.get_engine()
|
|
with engine.connect() as conn:
|
|
context = alembic_migration.MigrationContext.configure(conn)
|
|
heads = context.get_current_heads()
|
|
return heads
|
|
|
|
|
|
def get_current_legacy_head():
|
|
try:
|
|
legacy_head = sqla_migration.db_version(db_api.get_engine(),
|
|
db_migration.MIGRATE_REPO_PATH,
|
|
db_migration.INIT_VERSION)
|
|
except db_exception.DbMigrationError:
|
|
legacy_head = None
|
|
return legacy_head
|
|
|
|
|
|
def is_database_under_alembic_control():
|
|
if get_current_alembic_heads():
|
|
return True
|
|
return False
|
|
|
|
|
|
def is_database_under_migrate_control():
|
|
if get_current_legacy_head():
|
|
return True
|
|
return False
|
|
|
|
|
|
def place_database_under_alembic_control():
|
|
a_config = get_alembic_config()
|
|
|
|
if not is_database_under_migrate_control():
|
|
return
|
|
|
|
if not is_database_under_alembic_control():
|
|
print(_("Database is currently not under Alembic's migration "
|
|
"control."))
|
|
head = get_current_legacy_head()
|
|
if head == 42:
|
|
alembic_version = 'liberty'
|
|
elif head == 43:
|
|
alembic_version = 'mitaka01'
|
|
elif head == 44:
|
|
alembic_version = 'mitaka02'
|
|
elif head == 45:
|
|
alembic_version = 'ocata01'
|
|
elif head in range(1, 42):
|
|
print("Legacy head: ", head)
|
|
sys.exit(_("The current database version is not supported any "
|
|
"more. Please upgrade to Liberty release first."))
|
|
else:
|
|
sys.exit(_("Unable to place database under Alembic's migration "
|
|
"control. Unknown database state, can't proceed "
|
|
"further."))
|
|
|
|
print(_("Placing database under Alembic's migration control at "
|
|
"revision:"), alembic_version)
|
|
alembic_command.stamp(a_config, alembic_version)
|