# -*- coding: utf-8 -*- ########################################################################### # Copyright (c), The AiiDA team. All rights reserved. # # This file is part of the AiiDA code. # # # # The code is hosted on GitHub at https://github.com/aiidateam/aiida-core # # For further information on the license, see the LICENSE.txt file # # For further information please visit http://www.aiida.net # ########################################################################### """Make all uuid columns unique Revision ID: 37f3d4882837 Revises: 6a5c2ea1439d Create Date: 2018-11-17 17:18:58.691209 """ # pylint: disable=invalid-name from alembic import op # Remove when https://github.com/PyCQA/pylint/issues/1931 is fixed # pylint: disable=no-member,no-name-in-module,import-error # revision identifiers, used by Alembic. revision = '37f3d4882837' down_revision = '6a5c2ea1439d' branch_labels = None depends_on = None tables = ['db_dbcomment', 'db_dbcomputer', 'db_dbgroup', 'db_dbworkflow'] [docs]def verify_uuid_uniqueness(table): """Check whether the database contains duplicate UUIDS. Note that we have to redefine this method from aiida.manage.database.integrity.verify_uuid_uniqueness because that uses the default database connection, while here the one created by Alembic should be used instead. :raises: IntegrityError if database contains nodes with duplicate UUIDS. """ from sqlalchemy.sql import text from aiida.common.exceptions import IntegrityError query = text( 'SELECT s.id, s.uuid FROM (SELECT *, COUNT(*) OVER(PARTITION BY uuid) AS c FROM {}) AS s WHERE c > 1'. format(table) ) conn = op.get_bind() duplicates = conn.execute(query).fetchall() if duplicates: command = '`verdi database integrity detect-duplicate-uuid {table}`'.format(table=table) raise IntegrityError( 'Your table "{}"" contains entries with duplicate UUIDS.\nRun {} ' 'to return to a consistent state'.format(table, command) ) [docs]def upgrade(): for table in tables: verify_uuid_uniqueness(table) op.create_unique_constraint(table + '_uuid_key', table, ['uuid']) [docs]def downgrade(): for table in tables: op.drop_constraint(table + '_uuid_key', table)