def test_tape_empty_when_OSError_then_raise_exception(self, mock_tarfile): exception = OSError() mock_tarfile.open.side_effect = exception with self.assertRaises(OSError): tape_empty("some_drive") mock_tarfile.open.assert_called_once()
def test_tape_empty_when_tarfile_ReadError_and_unknown_message_then_raise_exception(self, mock_tarfile_open): exception = tarfile.ReadError() exception.message = 'some other message' mock_tarfile_open.side_effect = exception with self.assertRaises(tarfile.ReadError): tape_empty("some_drive") mock_tarfile_open.assert_called_once()
def test_tape_empty_when_tarfile_ReadError_with_msg_then_drive_is_empty(self, mock_rewind_tape, mock_tarfile_open): exception = tarfile.ReadError('empty file') mock_tarfile_open.side_effect = exception self.assertTrue(tape_empty("some_drive")) mock_tarfile_open.assert_called_once() mock_rewind_tape.assert_called_once_with("some_drive")
def test_tape_empty_when_IO_error_then_drive_is_empty(self, mock_rewind_tape, mock_tarfile): exception = IOError() exception.errno = errno.EIO mock_tarfile.open.side_effect = exception self.assertEqual(tape_empty("some_drive"), True) mock_tarfile.open.assert_called_once() mock_rewind_tape.assert_called_once_with("some_drive")
def test_tape_empty_when_drive_not_empty(self, mock_rewind_tape, mock_tarfile): mocked_tar = mock.Mock() mock_tarfile.open.return_value = mocked_tar self.assertEqual(tape_empty("some_drive"), False) mock_tarfile.open.assert_called_once() mocked_tar.close.assert_called_once() mock_rewind_tape.assert_called_once_with("some_drive")
def run(self, medium=None, drive=None, timeout=120): """ Mounts tape into drive Args: medium: Which medium to mount drive: Which drive to load to """ medium = StorageMedium.objects.get(pk=medium) slot = medium.tape_slot.slot_id tape_drive = TapeDrive.objects.get(pk=drive) mount_tape(tape_drive.robot.device, slot, drive) wait_to_come_online(tape_drive.device, timeout) if medium.format not in [100, 101]: label_root = Path.objects.get(entity='label').value xmlpath = os.path.join(label_root, '%s_label.xml' % medium.medium_id) if tape_empty(tape_drive.device): create_tape_label(medium, xmlpath) rewind_tape(tape_drive.device) write_to_tape(tape_drive.device, xmlpath) else: tar = tarfile.open(tape_drive.device, 'r|') first_member = tar.getmembers()[0] if first_member.name.endswith('_label.xml'): xmlstring = tar.extractfile(first_member).read() tar.close() if not verify_tape_label(medium, xmlstring): raise ValueError( 'Tape contains labelfile with wrong tapeid') elif first_member.name == 'reuse': tar.close() create_tape_label(medium, xmlpath) rewind_tape(tape_drive.device) write_to_tape(tape_drive.device, xmlpath) else: raise ValueError('Tape contains unknown information') TapeDrive.objects.filter(pk=drive).update( num_of_mounts=F('num_of_mounts') + 1, ) StorageMedium.objects.filter(pk=medium.pk).update( num_of_mounts=F('num_of_mounts') + 1, tape_drive_id=drive)
def write_medium_label_to_drive(drive_id, medium, slot_id, tape_drive): xmlfile = tempfile.NamedTemporaryFile(delete=False) try: arcname = '%s_label.xml' % medium.medium_id if medium.format not in [100, 101]: if tape_empty(tape_drive.device): create_tape_label(medium, xmlfile.name) rewind_tape(tape_drive.device) write_to_tape(tape_drive.device, xmlfile.name, arcname=arcname) else: tar = tarfile.open(tape_drive.device, 'r|') first_member = tar.getmembers()[0] tar.close() rewind_tape(tape_drive.device) if first_member.name.endswith('_label.xml'): tar = tarfile.open(tape_drive.device, 'r|') xmlstring = tar.extractfile(first_member).read() tar.close() if not verify_tape_label(medium, xmlstring): raise ValueError('Tape contains invalid label file') elif first_member.name == 'reuse': create_tape_label(medium, xmlfile.name) rewind_tape(tape_drive.device) write_to_tape(tape_drive.device, xmlfile.name, arcname=arcname) else: raise ValueError('Tape contains unknown information') rewind_tape(tape_drive.device) except BaseException: StorageMedium.objects.filter(pk=medium.pk).update( status=100, last_changed_local=timezone.now(), ) TapeDrive.objects.filter(pk=drive_id).update(locked=False, status=100) TapeSlot.objects.filter(slot_id=slot_id).update(status=100) raise finally: xmlfile.close() TapeDrive.objects.filter(pk=drive_id).update(locked=False)
def run(self, medium=None, drive=None, timeout=120): """ Mounts tape into drive Args: medium: Which medium to mount drive: Which drive to load to """ medium = StorageMedium.objects.get(pk=medium) slot = medium.tape_slot.slot_id tape_drive = TapeDrive.objects.get(pk=drive) if tape_drive.locked: raise TapeDriveLockedError() tape_drive.locked = True tape_drive.save(update_fields=['locked']) try: mount_tape(tape_drive.robot.device, slot, tape_drive.drive_id) wait_to_come_online(tape_drive.device, timeout) except: StorageMedium.objects.filter(pk=medium.pk).update(status=100) TapeDrive.objects.filter(pk=drive).update(locked=False, status=100) TapeSlot.objects.filter(slot_id=slot).update(status=100) raise TapeDrive.objects.filter(pk=drive).update( num_of_mounts=F('num_of_mounts') + 1, last_change=timezone.now(), ) StorageMedium.objects.filter(pk=medium.pk).update( num_of_mounts=F('num_of_mounts') + 1, tape_drive_id=drive) xmlfile = tempfile.NamedTemporaryFile(delete=False) try: arcname = '%s_label.xml' % medium.medium_id if medium.format not in [100, 101]: if tape_empty(tape_drive.device): create_tape_label(medium, xmlfile.name) rewind_tape(tape_drive.device) write_to_tape(tape_drive.device, xmlfile.name, arcname=arcname) else: tar = tarfile.open(tape_drive.device, 'r|') first_member = tar.getmembers()[0] tar.close() rewind_tape(tape_drive.device) if first_member.name.endswith('_label.xml'): tar = tarfile.open(tape_drive.device, 'r|') xmlstring = tar.extractfile(first_member).read() tar.close() if not verify_tape_label(medium, xmlstring): raise ValueError( 'Tape contains invalid label file') elif first_member.name == 'reuse': create_tape_label(medium, xmlfile.name) rewind_tape(tape_drive.device) write_to_tape(tape_drive.device, xmlfile.name, arcname=arcname) else: raise ValueError('Tape contains unknown information') rewind_tape(tape_drive.device) except: StorageMedium.objects.filter(pk=medium.pk).update(status=100) TapeDrive.objects.filter(pk=drive).update(locked=False, status=100) TapeSlot.objects.filter(slot_id=slot).update(status=100) raise finally: xmlfile.close() TapeDrive.objects.filter(pk=drive).update(locked=False)