1 # Copyright 2015 The Chromium OS 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 """Contains a simple client lib to interact with server meta interfaces.""" 6 7 import urllib2 8 9 import common 10 from fake_device_server.client_lib import common_client 11 from fake_device_server import meta_handler 12 13 14 class MetaClient(common_client.CommonClient): 15 """Client library for interacting meta interfaces to the server.""" 16 17 def __init__(self, *args, **kwargs): 18 common_client.CommonClient.__init__( 19 self, meta_handler.META_HANDLER_PATH, *args, **kwargs) 20 21 22 def get_generation(self, timeout_seconds=2): 23 """Retrieve the unique generation of the server. 24 25 @param timeout_seconds: number of seconds to wait for a response. 26 @return generation string or None. 27 28 """ 29 try: 30 request = urllib2.urlopen(self.get_url(['generation']), None, 31 timeout_seconds) 32 return request.read() 33 except urllib2.URLError: 34 return None 35
