def _wwn_struct_from_hex_str(self, wwn_hex_str):
try:
wwn_struct = fc_struct.HBA_WWN()
wwn_struct.wwn[:] = _utils.hex_str_to_byte_array(wwn_hex_str)
except ValueError:
err_msg = _("Invalid WWN hex string received: %s") % wwn_hex_str
raise exceptions.FCException(err_msg)
return wwn_struct
def _get_hba_handle(self, adapter_name=None, adapter_wwn_struct=None):
if adapter_name:
hba_handle = self._open_adapter_by_name(adapter_name)
elif adapter_wwn_struct:
hba_handle = self._open_adapter_by_wwn(adapter_wwn_struct)
else:
err_msg = _("Could not open HBA adapter. "
"No HBA name or WWN was specified")
raise exceptions.FCException(err_msg)
try:
yield hba_handle
finally:
self._close_adapter(hba_handle)
def _open_adapter(self, adapter_name=None, adapter_wwn=None):
if adapter_name:
func = hbaapi.HBA_OpenAdapter
arg = ctypes.c_char_p(six.b(adapter_name))
elif adapter_wwn:
func = hbaapi.HBA_OpenAdapterByWWN
arg = fc_struct.HBA_WWN(*adapter_wwn)
else:
err_msg = _("Could not open HBA adapter. "
"No HBA name or WWN was specified")
raise exceptions.FCException(err_msg)
handle = self._run_and_check_output(func, arg,
ret_val_is_err_code=False,
error_on_nonzero_ret_val=False,
error_ret_vals=[0])
return handle