The text-format of dhcpd-pools yields something like this:

Ranges:
vlan20_gurba x.y.1.10     - x.y.1.252      243    31     12.757    198   229    94.239
vlan20_gurba x.y.2.5      - x.y.2.252      248    26     10.484    220   246    99.194

Shared networks:
name                   max   cur     percent  touch    t+c  t+c perc
vlan20_gurba           491    57     11.609     418    475    96.741

Sum of all ranges:
name                   max   cur     percent  touch    t+c  t+c perc
All networks           491    57     11.609     418    475    96.741

For starters we want max, cur and touch.

The json for the same data (gotten roughly at the same time) is:

{
   "active_leases": [
         { "ip":"x.y.1.25", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.1.31", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.1.47", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.1.50", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.1.52", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.1.80", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.1.83", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.1.86", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.1.87", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.1.89", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.1.95", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.1.104", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.1.109", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.1.111", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.1.133", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.1.138", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.1.140", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.1.143", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.1.149", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.1.152", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.1.162", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.1.169", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.1.187", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.1.190", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.1.199", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.1.213", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.1.216", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.1.217", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.1.221", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.1.244", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.1.247", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.2.24", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.2.40", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.2.49", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.2.56", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.2.1., "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.2.63", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.2.67", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.2.71", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.2.80", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.2.81", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.2.87", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.2.89", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.2.94", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.2.95", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.2.131", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.2.132", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.2.142", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.2.176", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.2.185", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.2.186", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.2.188", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.2.206", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.2.207", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.2.231", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.2.243", "macaddress":"ve:ry:ce:ns:or:ed" },
         { "ip":"x.y.2.248", "macaddress":"ve:ry:ce:ns:or:ed" },
   ],
   "subnets": [
         { "location":"vlan20_uninett_nett", "range":"x.y.1.10 - x.y.1.252", "defined":243, "used":31, "touched":198, "free":212 },
         { "location":"vlan20_uninett_nett", "range":"x.y.2.5 - x.y.2.252", "defined":248, "used":26, "touched":220, "free":222 },
   ],
   "shared-networks": [
         { "location":"vlan20_uninett_nett", "defined":491, "used":57, "touched":418, "free":434 },
   ],
   "summary": {
         "location":"All networks",
         "defined":491,
         "used":57,
         "touched":418,
         "free":434
   }
}

So "shared_networks/defined" for "max", "shared_networks/used" for "cur" and "shared_networks/touched" for "touch".

Write a contrib script that serves as a proof-of-concept of such an integration with the ISC DHCP server. #2371

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