def _verified_frame_length()

in src/aws_encryption_sdk/internal/formatting/deserialize.py [0:0]

• 10 lines of code
• 5 McCabe index (conditional complexity)

def _verified_frame_length(frame_length, content_type):
    # type: (int, ContentType) -> int
    """Verify a frame length value for a message content type.

    :param int frame_length: Frame length to verify
    :param ContentType content_type: Message content type to verify against
    :return: frame length
    :rtype: int
    :raises SerializationError: if frame length is too large
    :raises SerializationError: if frame length is not zero for unframed content type
    """
    if content_type == ContentType.FRAMED_DATA and frame_length > MAX_FRAME_SIZE:
        raise SerializationError(
            "Specified frame length larger than allowed maximum: {found} > {max}".format(
                found=frame_length, max=MAX_FRAME_SIZE
            )
        )

    if content_type == ContentType.NO_FRAMING and frame_length != 0:
        raise SerializationError("Non-zero frame length found for non-framed message")

    return frame_length