mirror of
https://github.com/mofeng-git/One-KVM.git
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91 lines
3.4 KiB
Python
91 lines
3.4 KiB
Python
# ========================================================================== #
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# #
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# KVMD - The main Pi-KVM daemon. #
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# #
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# Copyright (C) 2018-2021 Maxim Devaev <mdevaev@gmail.com> #
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# #
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# This program is free software: you can redistribute it and/or modify #
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# it under the terms of the GNU General Public License as published by #
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# the Free Software Foundation, either version 3 of the License, or #
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# (at your option) any later version. #
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# #
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# This program is distributed in the hope that it will be useful, #
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# but WITHOUT ANY WARRANTY; without even the implied warranty of #
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
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# GNU General Public License for more details. #
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# #
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# You should have received a copy of the GNU General Public License #
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# along with this program. If not, see <https://www.gnu.org/licenses/>. #
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# #
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# ========================================================================== #
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import operator
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import functools
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import multiprocessing.queues
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import queue
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from typing import Tuple
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from typing import List
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from typing import Dict
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from typing import Hashable
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from typing import TypeVar
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# =====
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def remap(value: int, in_min: int, in_max: int, out_min: int, out_max: int) -> int:
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return (value - in_min) * (out_max - out_min) // (in_max - in_min) + out_min
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# =====
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def efmt(err: Exception) -> str:
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return f"{type(err).__name__}: {err}"
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# =====
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def merge(dest: Dict, src: Dict) -> None:
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for key in src:
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if key in dest:
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if isinstance(dest[key], dict) and isinstance(src[key], dict):
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merge(dest[key], src[key])
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continue
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dest[key] = src[key]
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def rget(dct: Dict, *keys: Hashable) -> Dict:
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result = functools.reduce((lambda nxt, key: nxt.get(key, {})), keys, dct)
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if not isinstance(result, dict):
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raise TypeError(f"Not a dict as result: {result!r} from {dct!r} at {list(keys)}")
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return result
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_DictKeyT = TypeVar("_DictKeyT")
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_DictValueT = TypeVar("_DictValueT")
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def sorted_kvs(dct: Dict[_DictKeyT, _DictValueT]) -> List[Tuple[_DictKeyT, _DictValueT]]:
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return sorted(dct.items(), key=operator.itemgetter(0))
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def swapped_kvs(dct: Dict[_DictKeyT, _DictValueT]) -> Dict[_DictValueT, _DictKeyT]:
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return {value: key for (key, value) in dct.items()}
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# =====
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def clear_queue(q: multiprocessing.queues.Queue) -> None: # pylint: disable=invalid-name
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for _ in range(q.qsize()):
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try:
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q.get_nowait()
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except queue.Empty:
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break
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# =====
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def build_cmd(cmd: List[str], cmd_remove: List[str], cmd_append: List[str]) -> List[str]:
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assert len(cmd) >= 1, cmd
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return [
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cmd[0], # Executable
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*filter((lambda item: item not in cmd_remove), cmd[1:]),
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*cmd_append,
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]
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