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OpenStack Study: 020_migrate_metadata_table_roles.py**** CubicPower OpenStack Study **** def upgrade(migrate_engine): meta = sql.MetaData() meta.bind = migrate_engine sql.Table('user', meta, autoload=True) sql.Table('role', meta, autoload=True) sql.Table('project', meta, autoload=True) new_metadata_table = sql.Table('user_project_metadata', meta, autoload=True) old_metadata_table = sql.Table('metadata', meta, autoload=True) session = sql.orm.sessionmaker(bind=migrate_engine)() for metadata in session.query(old_metadata_table): data = json.loads(metadata.data) if config.CONF.member_role_id not in metadata.data: data['roles'].append(config.CONF.member_role_id) r = session.query(new_metadata_table).filter_by( user_id=metadata.user_id, project_id=metadata.tenant_id).first() if r is not None: # roles should be the union of the two role lists old_roles = data['roles'] new_roles = json.loads(r.data)['roles'] data['roles'] = list(set(old_roles) | set(new_roles)) q = new_metadata_table.update().where( new_metadata_table.c.user_id == metadata.user_id).where( new_metadata_table.c.project_id == metadata.tenant_id).values(data=json.dumps(data)) else: q = new_metadata_table.insert().values( user_id=metadata.user_id, project_id=metadata.tenant_id, data=json.dumps(data)) session.execute(q) session.commit() old_metadata_table.drop()
**** CubicPower OpenStack Study **** def downgrade(migrate_engine): meta = sql.MetaData() meta.bind = migrate_engine sql.Table('user', meta, autoload=True) sql.Table('project', meta, autoload=True) metadata_table = sql.Table( 'metadata', meta, sql.Column( u'user_id', sql.String(64), primary_key=True), sql.Column( u'tenant_id', sql.String(64), primary_key=True), sql.Column('data', sql.Text())) metadata_table.create(migrate_engine, checkfirst=True) user_project_metadata_table = sql.Table( 'user_project_metadata', meta, autoload=True) metadata_table = sql.Table( 'metadata', meta, autoload=True) session = sql.orm.sessionmaker(bind=migrate_engine)() for metadata in session.query(user_project_metadata_table): if 'roles' in metadata: metadata_table.insert().values( user_id=metadata.user_id, tenant_id=metadata.project_id) session.close()
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