# -*- 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)