deb-murano/murano/db/migration/alembic_migrations/script.py.mako
Ruslan Kamaldinov 9030bc7285 Added DB migrations on Alembic
This commit migrates Murano database migration framework from
sqlalchemy-migrate to Alembic. sqlalchemy-migrate is considered abandoned. All
other OpenStack projects are in  process of migration to Alembic or have
already finished migration.

This change doesn't preserve all the migration scripts, it merges them into a
single migration script. That's what we would do even without Alembic. It's a
common practice to squash migration scripts into a single one right after the
release.

NOTICE:
CLI command to run migrations changed. Now it looks like this:
$ murano-db-manage upgrade

Migration path:
1. Simple solution is just to re-create your database from scratch
2. You can stamp your database with revision to make Alembic think that it
   already applied the first migration:
   $ tox -e venv -- murano-db-manage --config-file etc/murano/murano.conf stamp --revision head

For usage instructions see:
murano/db/migraiton/alembic_migrations/README

This patch also adds opportunistic tests for migrations. These tests will run in
OpenStack Infrastructure jenkins slaves. It'll use real MySQL and Postgres databases.
Tests will run in a "snake walk" manner, which means that upgrade and downgrade path
will be tested.
Base for migration tests is copied from Nova. Please note, that at this moment we
cannot use code from oslo, because it is not documented and is not tested. Once
test_migrations_base appears in project 'oslo.db', we'll be able to remove our own
test_migrations_base and use the one from 'oslo.db'.

implements: blueprint alembic-migrations
Change-Id: I5aa978f7095efc57f2d6fad81b5553e1880ad931
2014-06-20 18:01:34 +04:00

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1013 B
Mako

# Copyright ${create_date.year} OpenStack Foundation.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""${message}
Revision ID: ${up_revision}
Revises: ${down_revision}
Create Date: ${create_date}
"""
# revision identifiers, used by Alembic.
revision = ${repr(up_revision)}
down_revision = ${repr(down_revision)}
from alembic import op
import sqlalchemy as sa
${imports if imports else ""}
def upgrade():
${upgrades if upgrades else "pass"}
def downgrade():
${downgrades if downgrades else "pass"}