You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
74 lines
2.3 KiB
74 lines
2.3 KiB
# -*- coding: utf-8 -*-
|
|
|
|
# Copyright 2015 Calculate Ltd. http://www.calculate-linux.org
|
|
#
|
|
# Licensed 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.
|
|
|
|
import sys
|
|
from os import path
|
|
from calculate.lib.utils.files import isMount
|
|
from calculate.lib.utils.tools import Locker, LockError
|
|
from calculate.lib.cl_lang import (setLocalTranslate, getLazyLocalTranslate, _)
|
|
from .datavars import builder_data
|
|
import hashlib
|
|
import random
|
|
|
|
setLocalTranslate('cl_builder3', sys.modules[__name__])
|
|
__ = getLazyLocalTranslate(_)
|
|
|
|
|
|
class DriveSpool(object):
|
|
"""
|
|
Объект содержит спул устройств на которые можно устанавливать систему
|
|
"""
|
|
spool_data = path.join('/run/calculate/drives_lock')
|
|
|
|
def __init__(self, devices, shuf=True):
|
|
self.devices = devices
|
|
if shuf:
|
|
random.shuffle(self.devices)
|
|
self.devices = iter(self.devices)
|
|
self.lockers = []
|
|
|
|
@staticmethod
|
|
def device_id(device_name):
|
|
return device_name.replace('/', "_").lstrip("_")
|
|
|
|
@staticmethod
|
|
def check_device(device):
|
|
if device.startswith("/dev"):
|
|
return path.exists(device)
|
|
return True
|
|
|
|
def lock_device(self, device):
|
|
if self.check_device(device) and not isMount(device):
|
|
device_hashfn = path.join(self.spool_data, self.device_id(device))
|
|
locker = Locker(fn=device_hashfn, timeout=0)
|
|
try:
|
|
locker.acquire()
|
|
self.lockers.append(locker)
|
|
return True
|
|
except LockError as e:
|
|
return False
|
|
|
|
def get(self):
|
|
for device in self.devices:
|
|
if self.lock_device(device):
|
|
return device
|
|
return None
|
|
|
|
def close(self):
|
|
for locker in self.lockers:
|
|
locker.remove()
|
|
self.lockers = []
|