pci_device_pool.py 文件源码

def from_pci_stats(pci_stats):
    """Create and return a PciDevicePoolList from the data stored in the db,

    which can be either the serialized object, or, prior to the creation of the
    device pool objects, a simple dict or a list of such dicts.
    """
    pools = []
    if isinstance(pci_stats, six.string_types):
        try:
            pci_stats = jsonutils.loads(pci_stats)
        except (ValueError, TypeError):
            pci_stats = None
    if pci_stats:
        # Check for object-ness, or old-style storage format.
        if 'zun_object.namespace' in pci_stats:
            return PciDevicePoolList.obj_from_primitive(pci_stats)
        else:
            # This can be either a dict or a list of dicts
            if isinstance(pci_stats, list):
                pools = [PciDevicePool.from_dict(stat)
                         for stat in pci_stats]
            else:
                pools = [PciDevicePool.from_dict(pci_stats)]
    return PciDevicePoolList(objects=pools)