Synnefo » snf-ganeti » ganeti-local

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# Copyright (C) 2006, 2007, 2008 Google Inc.

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# This program is free software; you can redistribute it and/or modify

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# General Public License for more details.

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"""Virtualization interface abstraction

"""

from ganeti import ssconf

from ganeti import constants

from ganeti import errors

from ganeti.hypervisor import FakeHypervisor

from ganeti.hypervisor import XenHypervisor

def GetHypervisor():

  """Return a Hypervisor instance.

  This function parses the cluster hypervisor configuration file and

  instantiates a class based on the value of this file.

  """

  ht_kind = ssconf.SimpleStore().GetHypervisorType()

  if ht_kind == constants.HT_XEN_PVM30:

    cls = XenHypervisor.XenPvmHypervisor

  elif ht_kind == constants.HT_XEN_HVM31:

    cls = XenHypervisor.XenHvmHypervisor

  elif ht_kind == constants.HT_FAKE:

    cls = FakeHypervisor.FakeHypervisor

  else:

    raise errors.HypervisorError("Unknown hypervisor type '%s'" % ht_kind)

  return cls()