fcec378594
Legacy EngineFacade was deprecated a while ago, using new EngineFacade system is the recommended way to work with db engine and session. The new system has a lot of notable changes[1]: * Thread-safe initialization of EngineFacade; * Declarative reader/writer transactions separation; * Transaction scope defined by developer-specified context. [1] http://specs.openstack.org/openstack/oslo-specs/specs/kilo/make-enginefacade-a-facade.html Closes-Bug: #1475182 Change-Id: Ia03f35a1f3b22b2eda74263e319469cf2391e7b5
83 lines
2.4 KiB
Python
83 lines
2.4 KiB
Python
# Copyright 2015 Cisco Systems
|
|
#
|
|
# 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.
|
|
|
|
from logging.config import fileConfig
|
|
|
|
from alembic import context
|
|
|
|
from ironic_inspector import db
|
|
|
|
# this is the Alembic Config object, which provides
|
|
# access to the values within the .ini file in use.
|
|
config = context.config
|
|
ironic_inspector_config = config.ironic_inspector_config
|
|
|
|
# Interpret the config file for Python logging.
|
|
# This line sets up loggers basically.
|
|
fileConfig(config.config_file_name)
|
|
|
|
# add your model's MetaData object here
|
|
# for 'autogenerate' support
|
|
# from myapp import mymodel
|
|
# target_metadata = mymodel.Base.metadata
|
|
target_metadata = db.Base.metadata
|
|
|
|
# other values from the config, defined by the needs of env.py,
|
|
# can be acquired:
|
|
# my_important_option = config.get_main_option("my_important_option")
|
|
# ... etc.
|
|
|
|
|
|
def run_migrations_offline():
|
|
"""Run migrations in 'offline' mode.
|
|
|
|
This configures the context with just a URL
|
|
and not an Engine, though an Engine is acceptable
|
|
here as well. By skipping the Engine creation
|
|
we don't even need a DBAPI to be available.
|
|
|
|
Calls to context.execute() here emit the given string to the
|
|
script output.
|
|
|
|
"""
|
|
url = ironic_inspector_config.database.connection
|
|
context.configure(
|
|
url=url, target_metadata=target_metadata, literal_binds=True)
|
|
|
|
with context.begin_transaction():
|
|
context.run_migrations()
|
|
|
|
|
|
def run_migrations_online():
|
|
"""Run migrations in 'online' mode.
|
|
|
|
In this scenario we need to create an Engine
|
|
and associate a connection with the context.
|
|
|
|
"""
|
|
session = db.get_writer_session()
|
|
with session.connection() as connection:
|
|
context.configure(
|
|
connection=connection,
|
|
target_metadata=target_metadata
|
|
)
|
|
|
|
with context.begin_transaction():
|
|
context.run_migrations()
|
|
|
|
if context.is_offline_mode():
|
|
run_migrations_offline()
|
|
else:
|
|
run_migrations_online()
|