Source Code for Module virtualization.util

 1  # 
 2  # Copyright (c) 2008--2013 Red Hat, Inc. 
 3  # 
 4  # This software is licensed to you under the GNU General Public License, 
 5  # version 2 (GPLv2). There is NO WARRANTY for this software, express or 
 6  # implied, including the implied warranties of MERCHANTABILITY or FITNESS 
 7  # FOR A PARTICULAR PURPOSE. You should have received a copy of GPLv2 
 8  # along with this software; if not, see 
 9  # http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. 
10  # 
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13  # in this software or its documentation. 
14  # 
15   
16  import random 
17  from virtualization.errors import UUIDError 
18   
19 -def generate_uuid(): 
20      """Generate a random UUID and return it.""" 
21   
22      uuid_list = [ random.randint(0, 255) for _ in range(0, 16) ] 
23      return ("%02x" * 16) % tuple(uuid_list) 
24   
25 -def hyphenize_uuid(uuid): 
26      # Determine whether the string is already hyphenized. 
27      if len(uuid) == 36 and len(uuid.replace('-', '')) == 32: 
28          return uuid[:] 
29   
30      if len(uuid) != 32: 
31          raise UUIDError("UUID %s is not 32 characters long." % (uuid,)) 
32   
33      formatstr = "%s-%s-%s-%s-%s" 
34      new_uuid = formatstr % (uuid[0:8], 
35                              uuid[8:12], 
36                              uuid[12:16], 
37                              uuid[16:20], 
38                              uuid[20:]) 
39      return new_uuid 
40   
41 -def dehyphenize_uuid(uuid): 
42      if uuid is None: 
43          return uuid 
44   
45      return uuid.replace('-', '') 
46   
47 -def is_host_uuid(uuid): 
48      """ 
49      Returns true if the given UUID represents a host.  We can tell because 
50      host UUIDs are always 0. 
51      """ 
52      return int(eval("0x" + dehyphenize_uuid(uuid))) == 0 
53   
54 -def is_fully_virt(domain): 
55      """ 
56      Returns true if the given domain is a fully-virt domain. 
57      """ 
58      return domain.OSType().lower() == 'hvm' 
59