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##############################################################################
# Copyright (c) 2016 ZTE Corporation
# feng.xiaowei@zte.com.cn
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
##############################################################################
import argparse
from pymongo import MongoClient
from changes_in_mongodb import collections_old2New, \
fields_old2New, docs_old2New
from utils import main, parse_mongodb_url
parser = argparse.ArgumentParser(description='Update MongoDBs')
parser.add_argument('-u', '--url',
type=str,
required=False,
default='mongodb://127.0.0.1:27017/',
help='Mongo DB URL for Backups')
parser.add_argument('-d', '--db',
type=str,
required=False,
default='test_results_collection',
help='database for the update.')
def assert_collections(a_dict):
if a_dict is not None:
collections = eval_db('collection_names')
no_collections = []
for collection in a_dict.keys():
if collection not in collections:
no_collections.append(collection)
assert len(no_collections) == 0, \
'collections {} not exist'.format(no_collections)
def rename_collections(a_dict):
if a_dict is not None:
for collection, new_name in a_dict.iteritems():
eval_collection(collection, 'rename', new_name)
def rename_fields(a_dict):
collection_update(a_dict, '$rename')
def change_docs(a_dict):
collection_update(a_dict, '$set')
def eval_db(method, *args, **kwargs):
exec_db = db.__getattribute__(method)
return exec_db(*args, **kwargs)
def eval_collection(collection, method, *args, **kwargs):
exec_collection = db.__getattr__(collection)
return exec_collection.__getattribute__(method)(*args, **kwargs)
def collection_update(a_dict, operator):
if a_dict is not None:
for collection, updates in a_dict.iteritems():
for (query, doc) in updates:
doc_dict = {operator: doc}
eval_collection(collection, 'update', query,
doc_dict, upsert=False, multi=True)
def update(args):
parse_mongodb_url(args.url)
client = MongoClient(args.url)
global db
db = client[args.db]
assert_collections(docs_old2New)
assert_collections(fields_old2New)
assert_collections(collections_old2New)
change_docs(docs_old2New)
rename_fields(fields_old2New)
rename_collections(collections_old2New)
if __name__ == '__main__':
main(update, parser)
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