Munin contributed plugins

    # retrieve the data and omit ony output, if the relevant key is missing

    results = []

    for host_info in hosts:

        data = get_sensor_data(host_info.host)

        if data:

            for dataset in data["sensordatavalues"]:

                if dataset["value_type"] == graph_description["api_value_name"]:

                    results.append((host_info, dataset["value"]))

                    break

            else:

                # We cannot distinguish between fields that are not supported by the sensor (most

                # are optional) and missing data. Thus we cannot handle online/offline sensor data

                # fields, too.

                pass

    # skip this multigraph, if no host contained this data field

    if results:

        print("multigraph {}".format(graph_description["name"]))

        if include_config:

            # graph configuration

            print("graph_category sensors")

            for key in ("graph_title", "graph_vlabel", "graph_args", "graph_info"):

                if key in graph_description:

                    print("{} {}".format(key, graph_description[key]))

            for host_info, value in results:

                print("{}.label {}".format(host_info.fieldname, host_info.label))

                print("{}.type {}".format(host_info.fieldname, graph_description["value_type"]))

        if include_values:

            for host_info, value in results:

                print("{}.value {}".format(host_info.fieldname, value))

        print()