1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
|
# ========================================================================== #
# #
# KVMD - The main PiKVM daemon. #
# #
# Copyright (C) 2018-2022 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 os
import contextlib
from typing import Dict
from typing import Type
from typing import AsyncGenerator
from typing import Optional
import aiofiles
import aiofiles.base
from ...logging import get_logger
from ...errors import OperationError
from ...errors import IsBusyError
from ... import aiofs
from .. import BasePlugin
from .. import get_plugin_class
# =====
class MsdError(Exception):
pass
class MsdOperationError(OperationError, MsdError):
pass
class MsdIsBusyError(IsBusyError, MsdError):
def __init__(self) -> None:
super().__init__("Performing another MSD operation, please try again later")
class MsdOfflineError(MsdOperationError):
def __init__(self) -> None:
super().__init__("MSD is not found")
class MsdConnectedError(MsdOperationError):
def __init__(self) -> None:
super().__init__("MSD is connected to Server, but shouldn't for this operation")
class MsdDisconnectedError(MsdOperationError):
def __init__(self) -> None:
super().__init__("MSD is disconnected from Server, but should be for this operation")
class MsdImageNotSelected(MsdOperationError):
def __init__(self) -> None:
super().__init__("The image is not selected")
class MsdUnknownImageError(MsdOperationError):
def __init__(self) -> None:
super().__init__("The image is not found in the storage")
class MsdImageExistsError(MsdOperationError):
def __init__(self) -> None:
super().__init__("This image is already exists")
class MsdMultiNotSupported(MsdOperationError):
def __init__(self) -> None:
super().__init__("This MSD does not support storing multiple images")
class MsdCdromNotSupported(MsdOperationError):
def __init__(self) -> None:
super().__init__("This MSD does not support CD-ROM emulation")
# =====
class BaseMsd(BasePlugin):
async def get_state(self) -> Dict:
raise NotImplementedError()
async def poll_state(self) -> AsyncGenerator[Dict, None]:
if self is not None: # XXX: Vulture and pylint hack
raise NotImplementedError()
yield
async def reset(self) -> None:
raise NotImplementedError()
async def cleanup(self) -> None:
pass
# =====
async def set_params(self, name: Optional[str]=None, cdrom: Optional[bool]=None) -> None:
raise NotImplementedError()
async def set_connected(self, connected: bool) -> None:
raise NotImplementedError()
@contextlib.asynccontextmanager
async def write_image(self, name: str, size: int) -> AsyncGenerator[int, None]: # pylint: disable=unused-argument
if self is not None: # XXX: Vulture and pylint hack
raise NotImplementedError()
yield 1
async def write_image_chunk(self, chunk: bytes) -> int:
raise NotImplementedError()
async def remove(self, name: str) -> None:
raise NotImplementedError()
class MsdImageWriter:
def __init__(self, path: str, size: int, sync: int) -> None:
self.__name = os.path.basename(path)
self.__path = path
self.__size = size
self.__sync = sync
self.__file: Optional[aiofiles.base.AiofilesContextManager] = None
self.__written = 0
self.__unsynced = 0
def get_file(self) -> aiofiles.base.AiofilesContextManager:
assert self.__file is not None
return self.__file
def get_state(self) -> Dict:
return {
"name": self.__name,
"size": self.__size,
"written": self.__written,
}
async def open(self) -> "MsdImageWriter":
assert self.__file is None
get_logger(1).info("Writing %r image (%d bytes) to MSD ...", self.__name, self.__size)
self.__file = await aiofiles.open(self.__path, mode="w+b", buffering=0) # type: ignore
return self
async def write(self, chunk: bytes) -> int:
assert self.__file is not None
await self.__file.write(chunk) # type: ignore
self.__written += len(chunk)
self.__unsynced += len(chunk)
if self.__unsynced >= self.__sync:
await aiofs.afile_sync(self.__file)
self.__unsynced = 0
return self.__written
async def close(self) -> None:
assert self.__file is not None
if self.__written == self.__size:
(log, result) = (get_logger().info, "OK")
elif self.__written < self.__size:
(log, result) = (get_logger().error, "INCOMPLETE")
else: # written > size
(log, result) = (get_logger().warning, "OVERFLOW")
log("Written %d of %d bytes to MSD image %r: %s", self.__written, self.__size, self.__name, result)
await aiofs.afile_sync(self.__file)
await self.__file.close() # type: ignore
# =====
def get_msd_class(name: str) -> Type[BaseMsd]:
return get_plugin_class("msd", name) # type: ignore
|
