[#ZBX-20516] LLD JS preprocessing fails, Network ports discovery, SAN NetApp FAS3220

The template available at:

https://git.zabbix.com/projects/ZBX/repos/zabbix/browse/templates/san/netapp_fas3220_snmp?at=refs%2Fheads%2Frelease%2F5.0

Has a discovery rule "Network ports discovery" with key:

discovery[{#IFNAME},1.3.6.1.4.1.789.1.22.2.1.2,{#NODE},1.3.6.1.4.1.789.1.22.2.1.1,{#TYPE},1.3.6.1.4.1.789.1.22.2.1.15,{#ROLE},1.3.6.1.4.1.789.1.22.2.1.3,{#IFDESCR},1.3.6.1.4.1.789.1.22.1.2.1.2]

The data reported back looks like:

[{
"{#SNMPINDEX}": "8.100.99.45.99.108.45.48.50.3.101.50.100",
"{#IFNAME}": "e2d",
"{#NODE}": "dc-cl-02",
"{#TYPE}": "0",
"{#ROLE}": "2"
}]

This data fails to go through the preprocessing inside discovery section:

var data = JSON.parse(value);
var descriptions = {};
var out = [];

data.forEach(function(elem) {
    if (elem["{#IFDESCR}"]) {
        var parts = elem["{#IFDESCR}"].split(":");
        var port = parts[parts.length-1].split(' ');
        descriptions[parts[0] + ':' + port[port.length-1]] = {
            "{#IFDESCR}": elem["{#IFDESCR}"],
            "{#SNMPINDEX}": elem["{#SNMPINDEX}"]
        }
    }
});

data.forEach(function(elem) {
    if (elem["{#IFNAME}"]) {
        var port = descriptions[elem["{#NODE}"] + ':' + elem["{#IFNAME}"]];

        elem["{#IFDESCR}"] = port["{#IFDESCR}"];
        elem["{#IFSNMPINDEX}"] = port["{#SNMPINDEX}"];


        switch(elem["{#TYPE}"]) {
            case '0':
                elem["{#TYPE}"] = 'physical';
                break;
            case '1':
                elem["{#TYPE}"] = 'if-group';
                break;
            case '2':
                elem["{#TYPE}"] = 'vlan';
                break;
            case '3':
                elem["{#TYPE}"] = 'undef';
                break;
        };
    
        out.push(elem);
    }
});

return JSON.stringify(out);

It prints:

Preprocessing failed for: [{..."{#SNMPINDEX}": "8.100.99.45.99.108.45.48.49.3.97.48.97",..."{#IFNAME}": "a0a",..."{#NODE}":...
1. Failed: TypeError: cannot read property '{#IFDESCR}' of undefined
at [anon] (duktape.c:57260) internal
at [anon] (function:20) preventsyield
at forEach () native strict preventsyield
at [anon] (function:41) preventsyield

[ZBX-20516] LLD JS preprocessing fails, Network ports discovery, SAN NetApp FAS3220 Created: 2021 May 28 Updated: 2025 Apr 22
Status:	READY TO DEVELOP
Project:	ZABBIX BUGS AND ISSUES
Component/s:	Templates (T)
Affects Version/s:	None
Fix Version/s:	7.0.13rc1, 7.2.7rc1, 7.4.0rc1 (master)

[ZBX-20516] LLD JS preprocessing fails, Network ports discovery, SAN NetApp FAS3220 Created: 2021 May 28 Updated: 2025 Apr 22