def _rotate_by_jpegtran(cls, image_phys_path, rotated_image):
image_phys_path_rotated = image_phys_path + "_rotated"
rotation_angle = str(cls.ROTATIONS_MAP[rotated_image.orientation])
logger.info("rotating image ({} degrees): {}".format(rotation_angle, image_phys_path))
# call lossless rotation
subprocess.call(
['jpegtran', '-rotate', rotation_angle, '-outfile', image_phys_path_rotated, image_phys_path])
os.rename(image_phys_path_rotated, image_phys_path)
# invoke thumbnail recreation
Thumbnailer.create_miniatures(image_phys_path, force_recreate=True)
# reset image orientation
rotated_image.orientation = 'up'
# recalculate aspect radio, modification_time
rotated_image.aspect_ratio = Indexer.get_image_aspect_ratio(image_phys_path)
rotated_image.modification_time = get_mtime_datetime(image_phys_path)
rotated_image.save()
