#    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 import config as log_config

from alembic import context
from oslo_db.sqlalchemy import enginefacade

try:
    # NOTE(whaom): This is to register the DB2 alembic code which
    # is an optional runtime dependency.
    from ibm_db_alembic.ibm_db import IbmDbImpl  # noqa
except ImportError:
    pass

from ironic.db.sqlalchemy import models

# this is the Alembic Config object, which provides
# access to the values within the .ini file in use.
config = context.config

# Interpret the config file for Python logging.
# This line sets up loggers basically.
log_config.fileConfig(config.config_file_name)

# add your model's MetaData object here
# for 'autogenerate' support
# from myapp import mymodel
target_metadata = models.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_online():
    """Run migrations in 'online' mode.

    In this scenario we need to create an Engine
    and associate a connection with the context.

    """
    engine = enginefacade.get_legacy_facade().get_engine()
    with engine.connect() as connection:
        context.configure(connection=connection,
                          target_metadata=target_metadata)
        with context.begin_transaction():
            context.run_migrations()


run_migrations_online()
