Redfish plugin crashes with iLO 6 FW 1.59

I observed that the Redfish plugin crashes when monitoring a iLO 6 system (Firmware 1.59).

The excpetion is TypeError: 'item' must be a non empty string or ommited entirely, got ''

Stacktrace:

{
    "exc_traceback": [
        ["/omd/sites/mysite/lib/python3/cmk/base/cee/keepalive/checker.py", 211, "_process_fetch_entry", "check_result = execute_check_discovery("],
        ["/omd/sites/mysite/lib/python3/cmk/base/agent_based/discovery/_discovery.py", 119, "execute_check_discovery", "services = get_host_services("],
        ["/omd/sites/mysite/lib/python3/cmk/base/agent_based/discovery/autodiscovery.py", 593, "get_host_services", "**_get_node_services("],
        ["/omd/sites/mysite/lib/python3/cmk/base/agent_based/discovery/autodiscovery.py", 625, "_get_node_services", "service_result = analyse_discovered_services("],
        ["/omd/sites/mysite/lib/python3/cmk/base/agent_based/discovery/_discovered_services.py", 43, "analyse_discovered_services", "discovered_services=_discover_services("],
        ["/omd/sites/mysite/lib/python3/cmk/base/agent_based/discovery/_discovered_services.py", 151, "_discover_services", "{"],
        ["/omd/sites/mysite/lib/python3/cmk/base/agent_based/discovery/_discovered_services.py", 151, "<dictcomp>", "{"],
        ["/omd/sites/mysite/lib/python3/cmk/base/agent_based/discovery/_discovered_services.py", 304, "_discover_plugins_services", "yield from ("],
        ["/omd/sites/mysite/lib/python3/cmk/base/agent_based/discovery/_discovered_services.py", 304, "<genexpr>", "yield from ("],
        ["/omd/sites/mysite/lib/python3/cmk/base/api/agent_based/register/check_plugins.py", 73, "filtered_generator", "for element in generator(*args, **kwargs):"],
        ["/omd/sites/mysite/local/lib/python3/cmk/base/plugins/agent_based/redfish_voltage.py", 35, "discovery_redfish_voltage", "yield Service(item=entry[\"Name\"])"],
        ["/omd/sites/mysite/lib/python3/cmk/base/api/agent_based/checking_classes.py", 73, "__new__", "item=cls._parse_item(item),"],
        ["/omd/sites/mysite/lib/python3/cmk/base/api/agent_based/checking_classes.py", 84, "_parse_item", "raise TypeError(\"'item' must be a non empty string or ommited entirely, got %r\" % (item,))"]
    ]
}

The following output from the agent seems to trigger the issue. The "name" field is set to an empty string which causes the exception.

{
    "Voltages": [{
        "@odata.id": "/redfish/v1/Chassis/1/Power#Voltages/0",
        "LowerThresholdCritical": 30500,
        "LowerThresholdFatal": 65535,
        "LowerThresholdNonCritical": 31400,
        "MemberId": "0",
        "Name": "",
        "ReadingVolts": 32967,
        "Status": {
            "Health": "OK",
            "State": "Enabled"
        },
        "UpperThresholdCritical": 35500,
        "UpperThresholdFatal": 65535,
        "UpperThresholdNonCritical": 34700
    }]
}

My environment:

OS: Debian GNU/Linux 11 (bullseye)
Python version: 3.11.5
CheckMK Version: 2.2.0p22
CheckMK edition: cme

Yogibaer75 / Check_MK-Things

Redfish plugin crashes with iLO 6 FW 1.59 #53