# -*- 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 #
###########################################################################
# pylint: disable=invalid-name,too-few-public-methods,no-member
"""Invalidating node hash - User should rehash nodes for caching
Revision ID: e797afa09270
Revises: 26d561acd560
Create Date: 2019-07-01 19:39:33.605457
"""
from alembic import op
# Remove when https://github.com/PyCQA/pylint/issues/1931 is fixed
# pylint: disable=no-name-in-module,import-error
from sqlalchemy.sql import text
from aiida.cmdline.utils import echo
# revision identifiers, used by Alembic.
revision = 'e797afa09270'
down_revision = '26d561acd560'
branch_labels = None
depends_on = None
# Currently valid hash key
_HASH_EXTRA_KEY = '_aiida_hash'
[docs]def drop_hashes(conn): # pylint: disable=unused-argument
"""Drop hashes of nodes.
Print warning only if the DB actually contains nodes.
"""
n_nodes = conn.execute(text("""SELECT count(*) FROM db_dbnode;""")).fetchall()[0][0]
if n_nodes > 0:
echo.echo_warning('Invalidating the hashes of all nodes. Please run "verdi rehash".', bold=True)
statement = text("""UPDATE db_dbnode SET extras = extras #- '{""" + _HASH_EXTRA_KEY + """}'::text[];""")
conn.execute(statement)
[docs]def upgrade():
"""drop the hashes when upgrading"""
drop_hashes(op.get_bind())
[docs]def downgrade():
"""drop the hashes also when downgrading"""
drop_hashes(op.get_bind())