| # |
| # 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. |
| # |
| |
| # pytype: skip-file |
| |
| |
| class ShardedKey(object): |
| """ |
| A sharded key consisting of a user key and an opaque shard id represented by |
| bytes. |
| |
| Attributes: |
| key: The user key. |
| shard_id: An opaque byte string that uniquely represents a shard of the key. |
| """ |
| def __init__( |
| self, |
| key, |
| shard_id, # type: bytes |
| ): |
| # type: (...) -> None |
| assert shard_id is not None |
| self._key = key |
| self._shard_id = shard_id |
| |
| @property |
| def key(self): |
| return self._key |
| |
| def __repr__(self): |
| return '(%s, %s)' % (repr(self.key), self._shard_id) |
| |
| def __eq__(self, other): |
| return ( |
| type(self) == type(other) and self.key == other.key and |
| self._shard_id == other._shard_id) |
| |
| def __hash__(self): |
| return hash((self.key, self._shard_id)) |
| |
| def __reduce__(self): |
| return ShardedKey, (self.key, self._shard_id) |