def mapper(oid, opts, jobid=False):
    logger.debug("mapper()")
    src = api.source(oid)
    if api.documentation(src)["set"]:
        return None
    if api.exists(name, oid, opts):
        return oid
    out_histo = build_ngrams(api.retrieve(src, oid, opts)["data"], opts["n"])
    api.store(name, oid, out_histo, opts)
    return oid
def mapper(oid, opts, jobid=False):
    logger.debug("mapper()")

    src = api.source(oid)
    if api.documentation(src)["set"]:
        return None
    if api.exists(name, oid, opts):
        return oid
    opcodes = api.get_field("opcodes", oid, "opcodes")
    if not opcodes:
        return None
    out_histo = build_ngrams(opcodes, opts["n"])
    api.store(name, oid, out_histo, opts)
    return oid