# -*- 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 #
###########################################################################
import os
from aiida.backends.djsite.db.models import DbNode
from aiida.backends.djsite.db.models import DbWorkflow
from aiida.common.additions.backup_script.backup_base import AbstractBackup, BackupError
from aiida.common.folders import RepositoryFolder
from aiida.orm.node import Node
from aiida.orm.workflow import Workflow
[docs]class Backup(AbstractBackup):
"""
Backup for django backend
"""
[docs] def _query_first_workflow(self):
"""
Query first workflow
:return:
"""
return DbWorkflow.objects.all().order_by('ctime')[:1]
[docs] def _query_first_node(self):
"""
Query first node
:return:
"""
return DbNode.objects.all().order_by('ctime')[:1]
[docs] def _get_query_set_length(self, query_set):
"""
Get query set length
"""
return query_set.count()
[docs] def _get_query_sets(self, start_of_backup, backup_end_for_this_round):
"""
Get Nodes and Worflows query set from start to end of backup.
:param start_of_backup:
:param backup_end_for_this_round:
:return:
"""
query_sets = [DbNode.objects.filter(
mtime__gte=start_of_backup,
mtime__lte=backup_end_for_this_round),
DbWorkflow.objects.filter(
mtime__gte=start_of_backup,
mtime__lte=backup_end_for_this_round)]
return query_sets
[docs] def _get_query_set_iterator(self, query_set):
"""
Get query set iterator
:param query_set:
:return:
"""
return query_set.iterator()
[docs] def _get_source_directory(self, item):
"""
:param item:
:return:
"""
if type(item) == DbWorkflow:
source_dir = os.path.normpath(RepositoryFolder(
section=Workflow._section_name,
uuid=item.uuid).abspath)
elif type(item) == DbNode:
source_dir = os.path.normpath(RepositoryFolder(
section=Node._section_name,
uuid=item.uuid).abspath)
else:
# Raise exception
self._logger.error(
"Unexpected item type to backup: {}"
.format(type(item)))
raise BackupError(
"Unexpected item type to backup: {}"
.format(type(item)))
return source_dir