| # Licensed to the Apache Software Foundation (ASF) under one |
| # or more contributor license agreements. See the NOTICE file |
| # distributed with this work for additional information |
| # regarding copyright ownership. The ASF licenses this file |
| # to you under the Apache License, Version 2.0 (the |
| # "License"); you may not use this file except in compliance |
| # with the License. You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, |
| # software distributed under the License is distributed on an |
| # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| # KIND, either express or implied. See the License for the |
| # specific language governing permissions and limitations |
| # under the License. |
| |
| import struct |
| import uuid |
| |
| |
| class TableOperations(object): |
| |
| def current(self): |
| raise NotImplementedError() |
| |
| def refresh(self): |
| raise NotImplementedError() |
| |
| def commit(self, base, metadata): |
| raise NotImplementedError() |
| |
| def io(self): |
| raise NotImplementedError() |
| |
| def metadata_file_location(self, file): |
| raise NotImplementedError() |
| |
| def new_snapshot_id(self): |
| new_uuid = uuid.uuid4() |
| msb, lsb = struct.unpack(">qq", new_uuid.bytes) |
| return abs(msb ^ lsb) |