def test_wait_to_come_online_success_after_n_times_should_return( self, mock_is_tape_drive_online, mock_sleep): mock_is_tape_drive_online.side_effect = [False, False, True] wait_to_come_online("device_to_wait_for") self.assertEqual(mock_is_tape_drive_online.call_count, 3) self.assertEqual(mock_sleep.call_count, 2)
def test_wait_to_come_online_default_timeout_after_121_times(self, mock_is_tape_drive_online, mock_sleep): with self.assertRaises(RobotMountTimeoutException): wait_to_come_online("device_to_wait_for") self.assertEqual(mock_is_tape_drive_online.call_count, 121) self.assertEqual(mock_sleep.call_count, 121)
def test_wait_to_come_online_never_get_online_should_raise_exception(self, mock_is_tape_drive_online, mock_sleep): with self.assertRaises(RobotMountTimeoutException): wait_to_come_online("device_to_wait_for", 3) self.assertEqual(mock_is_tape_drive_online.call_count, 4) self.assertEqual(mock_sleep.call_count, 4)
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 mount_tape_medium_into_drive(drive_id, medium_id, timeout): """ Mounts tape into drive Args: medium_id: Which medium to mount drive_id: Which drive to load to timeout: Number of times to try to mount the tape (1 sec sleep between each retry) """ medium = StorageMedium.objects.get(pk=medium_id) slot_id = medium.tape_slot.slot_id tape_drive = TapeDrive.objects.get(pk=drive_id) if tape_drive.locked: raise TapeDriveLockedError() tape_drive.locked = True tape_drive.save(update_fields=['locked']) try: mount_tape(tape_drive.robot.device, slot_id, tape_drive.drive_id) wait_to_come_online(tape_drive.device, timeout) except BaseException: StorageMedium.objects.filter(pk=medium_id).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 TapeDrive.objects.filter(pk=drive_id).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_id, last_changed_local=timezone.now(), ) write_medium_label_to_drive(drive_id, medium, slot_id, tape_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) 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)