def parse_data_path(data_path):
    """
        Parse a data path of the form <instrument>/<data>
    """
    instrument = None
    data_id = None
    toks = data_path.split('/')
    if len(toks) == 1 and len(toks[0]) > 0:
        data_id = toks[0]
    elif len(toks) == 2 and len(toks[0]) > 0 and len(toks[1]) > 0:
        instrument = toks[0]
        data_id = toks[1]
    return instrument, data_id