# Copyright(c) 2017, Intel Corporation

#

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import json

from . import constants

import struct

from collections import OrderedDict

"""  This is the entrypoint for generating the metadata

"""

def get_metadata(afu_json):

    ret_list = []

    ret_list.extend(list(constants.METADATA_GUID))

    if len(afu_json) != 0:

        ret_list.extend(pack_int_to_buf(len(json.dumps(afu_json))))

        ret_list.extend(list(json.dumps(afu_json)))

    else:

        ret_list.extend(pack_int_to_buf(0))

    return ret_list

def pack_int_to_buf(val):

    pack_format = "

    buf = struct.pack(pack_format, val)

    return list(buf)