| # 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. |
| |
| |
| from enum import IntFlag |
| from typing import Optional |
| |
| from pyignite.constants import PROTOCOL_BYTE_ORDER |
| |
| |
| class BitmaskFeature(IntFlag): |
| CLUSTER_API = 1 << 2 |
| |
| def __bytes__(self) -> bytes: |
| """ |
| Convert feature flags array to bytearray bitmask. |
| |
| :return: Bitmask as bytearray. |
| """ |
| full_bytes = self.bit_length() // 8 + 1 |
| return self.to_bytes(full_bytes, byteorder=PROTOCOL_BYTE_ORDER) |
| |
| @staticmethod |
| def all_supported() -> 'BitmaskFeature': |
| """ |
| Get all supported features. |
| |
| :return: All supported features. |
| """ |
| supported = BitmaskFeature(0) |
| for feature in BitmaskFeature: |
| supported |= feature |
| return supported |
| |
| @staticmethod |
| def from_array(features_array: bytes) -> Optional['BitmaskFeature']: |
| """ |
| Get features from bytearray. |
| |
| :param features_array: Feature bitmask as array, |
| :return: Return features. |
| """ |
| if features_array is None: |
| return None |
| return BitmaskFeature.from_bytes(features_array, byteorder=PROTOCOL_BYTE_ORDER) |