79 lines
2.5 KiB
Python
79 lines
2.5 KiB
Python
# 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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from __future__ import with_statement
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from logging.config import fileConfig
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from alembic import context
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from oslo_config import cfg
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from oslo_db import exception as db_exc
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from placement import conf
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from placement.db.sqlalchemy import models
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from placement import db_api as placement_db
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# this is the Alembic Config object, which provides
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# access to the values within the .ini file in use.
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config = context.config
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# Interpret the config file for Python logging.
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# This line sets up loggers basically.
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fileConfig(config.config_file_name)
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# add your model's MetaData object here
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# for 'autogenerate' support
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# from myapp import mymodel
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# target_metadata = mymodel.Base.metadata
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target_metadata = models.BASE.metadata
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# other values from the config, defined by the needs of env.py,
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# can be acquired:
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# my_important_option = config.get_main_option("my_important_option")
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# ... etc.
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def run_migrations_online():
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"""Run migrations in 'online' mode.
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In this scenario we need to create an Engine
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and associate a connection with the context.
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"""
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try:
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connectable = placement_db.get_placement_engine()
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except db_exc.CantStartEngineError:
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# We are being called from a context where the database hasn't been
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# configured so we need to set up Config and config the database.
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# This is usually the alembic command line.
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config = cfg.ConfigOpts()
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conf.register_opts(config)
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config([], project="placement", default_config_files=None)
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placement_db.configure(config)
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connectable = placement_db.get_placement_engine()
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with connectable.connect() as connection:
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context.configure(
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connection=connection,
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target_metadata=target_metadata)
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with context.begin_transaction():
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context.run_migrations()
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if context.is_offline_mode():
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raise Exception('offline mode disabled')
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else:
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run_migrations_online()
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