56 lines
2.2 KiB
Python
56 lines
2.2 KiB
Python
from pymongo import MongoClient
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import logging
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import argparse
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from metrik import __version__
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def open_connection(host, port):
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return MongoClient(host=host, port=port)
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def merge(con1, con2, db1, db2):
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database1 = con1[db1]
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database2 = con2[db2]
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collections = database1.collection_names(include_system_collections=False)
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for collection_name in collections:
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collection1 = database1[collection_name]
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collection2 = database2[collection_name]
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for item in collection1.find():
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if '_id' in item and collection2.find_one({'_id': item['_id']}) is None:
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collection2.save(item)
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collection1.delete_one({'_id': item['_id']})
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else:
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logging.warning("Not moving item '{}' as the same ID already"
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" exists in the `right` database.".format(
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item.get('_id', '')
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))
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def main():
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parser = argparse.ArgumentParser()
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parser.add_argument('-g', '--host-1', dest='host1', required=True,
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help='The `left` database to copy from')
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parser.add_argument('-f', '--host-2', dest='host2', required=True,
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help='The `right` database to copy into')
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parser.add_argument('-p', '--port-1', default=27017, dest='port1', type=int,
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help='The port number of the `left` database')
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parser.add_argument('-o', '--port-2', default=27017, dest='port2', type=int,
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help='The port number of the `right` database')
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parser.add_argument('-d', '--database-1', default='metrik', dest='db1',
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help='The database on the `left` host we are merging from')
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parser.add_argument('-s', '--database-2', default='metrik', dest='db2',
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help='The database on the `right` host we are merging into')
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parser.add_argument('-v', '--version', action='version', version=__version__)
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args = parser.parse_args()
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con1 = open_connection(args.host1, args.port1)
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con2 = open_connection(args.host2, args.port2)
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merge(con1, con2, args.db1, args.db2)
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con1.close()
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con2.close()
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if __name__ == '__main__':
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main()
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