I am experimenting moving some snmp monitoring from telegraf to logstash snmp imput but having some problems with the layout of the output and cant figure out how to efficiently parse this into a useful format.

Currently my output looks like this when using the tables query and selecting the columns I want.

```
{
"ifTable" => [
[ 0] {
"ifDescr" => "lo",
"ifOutOctets" => 1579659027,
"ifInOctets" => 1579659027,
"ifOperStatus" => 1,
"index" => "1"
},
[ 1] {
"ifDescr" => "ipsec0",
"ifOutOctets" => 0,
"ifInOctets" => 0,
"ifOperStatus" => 1,
"index" => "2"
},
[ 2] {
"ifDescr" => "sit0",
"ifOutOctets" => 0,
"ifInOctets" => 0,
"ifOperStatus" => 2,
"index" => "3"
},
[ 3] {
"ifDescr" => "ip6tnl0",
"ifOutOctets" => 0,
"ifInOctets" => 0,
"ifOperStatus" => 2,
"index" => "4"
},
[ 4] {
"ifDescr" => "PortE0",
"ifOutOctets" => 267486371,
"ifInOctets" => 132144834,
"ifOperStatus" => 1,
"index" => "5"
},
```

I need to be able to efficiently filter/remove the interfaces I don't need, I have tried it a few different ways but cant get the result I am looking for.

I want it to look something like this.

```
"interfaces" : {
"lo" {
"ifOutOctets" => 1579659027,
"ifInOctets" => 1579659027,
"ifOperStatus" => 1,
"index" => "1"
}
"ipsec0" {
"ifOutOctets" => 0,
"ifInOctets" => 0,
"ifOperStatus" => 1,
"index" => "2"
}
```

Any help with getting this data into a more workable format would be great.