1 # Copyright 2014 The Chromium Authors. All rights reserved. 2 # Use of this source code is governed by a BSD-style license that can be 3 # found in the LICENSE file. 4 5 """A module to keep track of devices across builds.""" 6 7 import os 8 9 LAST_DEVICES_FILENAME = '.last_devices' 10 LAST_MISSING_DEVICES_FILENAME = '.last_missing' 11 12 13 def GetPersistentDeviceList(file_name): 14 """Returns a list of devices. 15 16 Args: 17 file_name: the file name containing a list of devices. 18 19 Returns: List of device serial numbers that were on the bot. 20 """ 21 with open(file_name) as f: 22 return f.read().splitlines() 23 24 25 def WritePersistentDeviceList(file_name, device_list): 26 path = os.path.dirname(file_name) 27 if not os.path.exists(path): 28 os.makedirs(path) 29 with open(file_name, 'w') as f: 30 f.write('\n'.join(set(device_list))) 31
