Source Code for Package ganeti.hypervisor

 1  # 
 2  # 
 3   
 4  # Copyright (C) 2006, 2007, 2008 Google Inc. 
 5  # 
 6  # This program is free software; you can redistribute it and/or modify 
 7  # it under the terms of the GNU General Public License as published by 
 8  # the Free Software Foundation; either version 2 of the License, or 
 9  # (at your option) any later version. 
10  # 
11  # This program is distributed in the hope that it will be useful, but 
12  # WITHOUT ANY WARRANTY; without even the implied warranty of 
13  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU 
14  # General Public License for more details. 
15  # 
16  # You should have received a copy of the GNU General Public License 
17  # along with this program; if not, write to the Free Software 
18  # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 
19  # 02110-1301, USA. 
20   
21   
22  """Virtualization interface abstraction 
23   
24  """ 
25   
26  from ganeti import constants 
27  from ganeti import errors 
28   
29  from ganeti.hypervisor import hv_fake 
30  from ganeti.hypervisor import hv_xen 
31  from ganeti.hypervisor import hv_kvm 
32  from ganeti.hypervisor import hv_chroot 
33  from ganeti.hypervisor import hv_lxc 
34   
35   
36  _HYPERVISOR_MAP = { 
37    constants.HT_XEN_PVM: hv_xen.XenPvmHypervisor, 
38    constants.HT_XEN_HVM: hv_xen.XenHvmHypervisor, 
39    constants.HT_FAKE: hv_fake.FakeHypervisor, 
40    constants.HT_KVM: hv_kvm.KVMHypervisor, 
41    constants.HT_CHROOT: hv_chroot.ChrootManager, 
42    constants.HT_LXC: hv_lxc.LXCHypervisor, 
43    } 
44   
45   
46 -def GetHypervisorClass(ht_kind): 
47    """Return a Hypervisor class. 
48   
49    This function returns the hypervisor class corresponding to the 
50    given hypervisor name. 
51   
52    @type ht_kind: string 
53    @param ht_kind: The requested hypervisor type 
54   
55    """ 
56    if ht_kind not in _HYPERVISOR_MAP: 
57      raise errors.HypervisorError("Unknown hypervisor type '%s'" % ht_kind) 
58   
59    cls = _HYPERVISOR_MAP[ht_kind] 
60    return cls 
61   
62   
63 -def GetHypervisor(ht_kind): 
64    """Return a Hypervisor instance. 
65   
66    This is a wrapper over L{GetHypervisorClass} which returns an 
67    instance of the class. 
68   
69    @type ht_kind: string 
70    @param ht_kind: The requested hypervisor type 
71   
72    """ 
73    cls = GetHypervisorClass(ht_kind) 
74   
75    return cls() 
76