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# ========================================================================== #
# #
# KVMD - The main Pi-KVM daemon. #
# #
# Copyright (C) 2018 Maxim Devaev <[email protected]> #
# #
# This program is free software: you can redistribute it and/or modify #
# it under the terms of the GNU General Public License as published by #
# the Free Software Foundation, either version 3 of the License, or #
# (at your option) any later version. #
# #
# This program is distributed in the hope that it will be useful, #
# but WITHOUT ANY WARRANTY; without even the implied warranty of #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
# GNU General Public License for more details. #
# #
# You should have received a copy of the GNU General Public License #
# along with this program. If not, see <https://www.gnu.org/licenses/>. #
# #
# ========================================================================== #
import types
from typing import Dict
from typing import Type
from typing import AsyncGenerator
from .. import BasePlugin
from .. import get_plugin_class
# =====
class MsdError(Exception):
pass
class MsdOperationError(MsdError):
pass
class MsdOfflineError(MsdOperationError):
def __init__(self) -> None:
super().__init__("MSD is not found")
class MsdAlreadyConnectedError(MsdOperationError):
def __init__(self) -> None:
super().__init__("MSD is already connected to Server")
class MsdAlreadyDisconnectedError(MsdOperationError):
def __init__(self) -> None:
super().__init__("MSD is already disconnected from Server")
class MsdConnectedError(MsdOperationError):
def __init__(self) -> None:
super().__init__("MSD connected to Server, but should not")
class MsdIsBusyError(MsdOperationError):
def __init__(self) -> None:
super().__init__("Performing another MSD operation, please try again later")
# =====
class BaseMsd(BasePlugin):
def get_state(self) -> Dict:
raise NotImplementedError
async def poll_state(self) -> AsyncGenerator[Dict, None]:
yield {}
raise NotImplementedError
async def cleanup(self) -> None:
pass
async def connect(self) -> Dict:
raise NotImplementedError
async def disconnect(self) -> Dict:
raise NotImplementedError
async def reset(self) -> None:
raise NotImplementedError
async def __aenter__(self) -> "BaseMsd":
raise NotImplementedError
def get_chunk_size(self) -> int:
raise NotImplementedError
async def write_image_info(self, name: str, complete: bool) -> None:
raise NotImplementedError
async def write_image_chunk(self, chunk: bytes) -> int:
raise NotImplementedError
async def __aexit__(
self,
_exc_type: Type[BaseException],
_exc: BaseException,
_tb: types.TracebackType,
) -> None:
raise NotImplementedError
# =====
def get_msd_class(name: str) -> Type[BaseMsd]:
return get_plugin_class("msd", (name or "disabled")) # type: ignore
|
