

def get_info(self, host):
    'Retrieve information from libvirt for a specific instance name.\n\n        If a libvirt error is encountered during lookup, we might raise a\n        NotFound exception or Error exception depending on how severe the\n        libvirt error is.\n\n        :returns hardware.InstanceInfo:\n        '
    try:
        dom_info = self._get_domain_info(host)
    except libvirt.libvirtError as ex:
        error_code = ex.get_error_code()
        if (error_code == libvirt.VIR_ERR_NO_DOMAIN):
            raise exception.InstanceNotFound(instance_id=self.uuid)
        msg = (_('Error from libvirt while getting domain info for %(instance_name)s: [Error Code %(error_code)s] %(ex)s') % {
            'instance_name': self.name,
            'error_code': error_code,
            'ex': ex,
        })
        raise exception.NovaException(msg)
    return hardware.InstanceInfo(state=LIBVIRT_POWER_STATE[dom_info[0]], max_mem_kb=dom_info[1], mem_kb=dom_info[2], num_cpu=dom_info[3], cpu_time_ns=dom_info[4], id=self.id)

dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/virt/libvirt/guest.py Guest.get_info/original