Initializing alembic for separate chain
Change-Id: I260f80b57945ab3263d7f561678c3c9494a61b7c
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neutron_lbaas/db/migration/__init__.py
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neutron_lbaas/db/migration/__init__.py
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neutron_lbaas/db/migration/alembic.ini
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neutron_lbaas/db/migration/alembic.ini
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# A generic, single database configuration.
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[alembic]
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# path to migration scripts
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script_location = alembic_migrations
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# template used to generate migration files
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# file_template = %%(rev)s_%%(slug)s
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# max length of characters to apply to the
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# "slug" field
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#truncate_slug_length = 40
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# set to 'true' to run the environment during
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# the 'revision' command, regardless of autogenerate
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# revision_environment = false
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# set to 'true' to allow .pyc and .pyo files without
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# a source .py file to be detected as revisions in the
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# versions/ directory
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# sourceless = false
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sqlalchemy.url =
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# Logging configuration
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[loggers]
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keys = root,sqlalchemy,alembic
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[handlers]
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keys = console
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[formatters]
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keys = generic
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[logger_root]
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level = WARN
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handlers = console
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qualname =
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[logger_sqlalchemy]
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level = WARN
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handlers =
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qualname = sqlalchemy.engine
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[logger_alembic]
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level = INFO
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handlers =
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qualname = alembic
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[handler_console]
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class = StreamHandler
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args = (sys.stderr,)
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level = NOTSET
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formatter = generic
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[formatter_generic]
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format = %(levelname)-5.5s [%(name)s] %(message)s
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datefmt = %H:%M:%S
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neutron_lbaas/db/migration/alembic_migrations/README
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neutron_lbaas/db/migration/alembic_migrations/README
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Generic single-database configuration.
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neutron_lbaas/db/migration/alembic_migrations/env.py
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neutron_lbaas/db/migration/alembic_migrations/env.py
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# 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 logging import config as logging_config
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from alembic import context
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from neutron.db import model_base
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from oslo.config import cfg
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from oslo.db.sqlalchemy import session
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import sqlalchemy as sa
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from sqlalchemy import event
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from neutron.db.migration.models import head # noqa
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from neutron.db.migration.cli import * # noqa
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MYSQL_ENGINE = None
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LBAAS_VERSION_TABLE = 'alembic_version_lbaas'
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config = context.config
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neutron_config = config.neutron_config
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logging_config.fileConfig(config.config_file_name)
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target_metadata = model_base.BASEV2.metadata
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def set_mysql_engine():
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try:
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mysql_engine = neutron_config.command.mysql_engine
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except cfg.NoSuchOptError:
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mysql_engine = None
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global MYSQL_ENGINE
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MYSQL_ENGINE = (mysql_engine or
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model_base.BASEV2.__table_args__['mysql_engine'])
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def run_migrations_offline():
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set_mysql_engine()
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kwargs = dict()
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if neutron_config.database.connection:
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kwargs['url'] = neutron_config.database.connection
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else:
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kwargs['dialect_name'] = neutron_config.database.engine
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kwargs['version_table'] = LBAAS_VERSION_TABLE
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context.configure(**kwargs)
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with context.begin_transaction():
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context.run_migrations()
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@event.listens_for(sa.Table, 'after_parent_attach')
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def set_storage_engine(target, parent):
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if MYSQL_ENGINE:
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target.kwargs['mysql_engine'] = MYSQL_ENGINE
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def run_migrations_online():
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set_mysql_engine()
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engine = session.create_engine(neutron_config.database.connection)
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connection = engine.connect()
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context.configure(
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connection=connection,
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target_metadata=target_metadata,
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version_table=LBAAS_VERSION_TABLE
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)
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try:
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with context.begin_transaction():
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context.run_migrations()
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finally:
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connection.close()
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engine.dispose()
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if context.is_offline_mode():
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run_migrations_offline()
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else:
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run_migrations_online()
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neutron_lbaas/db/migration/alembic_migrations/script.py.mako
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neutron_lbaas/db/migration/alembic_migrations/script.py.mako
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"""${message}
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Revision ID: ${up_revision}
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Revises: ${down_revision}
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Create Date: ${create_date}
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"""
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# revision identifiers, used by Alembic.
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revision = ${repr(up_revision)}
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down_revision = ${repr(down_revision)}
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from alembic import op
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import sqlalchemy as sa
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${imports if imports else ""}
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def upgrade():
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${upgrades if upgrades else "pass"}
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def downgrade():
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${downgrades if downgrades else "pass"}
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465b2dcea7c
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# Copyright 2014 OpenStack Foundation
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#
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# 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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#
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"""start neutron-lbaas chain
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Revision ID: start_neutron_lbaas
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Revises: None
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Create Date: 2014-12-09 11:06:18.196062
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"""
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# revision identifiers, used by Alembic.
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revision = 'start_neutron_lbaas'
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down_revision = None
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def upgrade():
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pass
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def downgrade():
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pass
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