getnetstat

#!/bin/bash
# this is free software under the GPLv2
# Author: Christof Schulze, christof.schulze@gmx.net
#
#set -ix
URL=http://map.bb.ffm.freifunk.net/nodes.json
HOSTNAME="${COLLECTD_HOSTNAME:-localhost}"
INTERVAL="${COLLECTD_INTERVAL:-60}"

getdata() {
  temp=$(/usr/bin/wget -q -O - "$URL")
  totalnodes=$(echo $temp|/bin/grep -P -o "name.*?}"|/usr/bin/wc -l)
  #onlinenodes=$(echo $temp|/bin/grep -P -o "name.*?}" |/bin/grep -c "online\": true")
  onlinenodes=$(echo $temp|/bin/grep -P -o "online\": *true" |wc -l)
  #clients=$(echo $temp|/bin/grep -P -o "name.*?}.*?}" |/bin/grep -o -P "clientcount\": [0-9]+"|/usr/bin/awk '{sum=sum+$2} END {print sum}')
  clients=$(echo $temp|/bin/grep -P -o "client.........."|cut -d: -f2|cut -d, -f1|awk '{sum = sum + $1} END {print sum}')
  #  echo totalnodes: $totalnodes
  #  echo onlinenodes: $onlinenodes
  #  echo clients: $clients

  echo "PUTVAL \"$HOSTNAME/exec-Freifunk_Frankfurt/gauge-Total_Nodes\" interval=$INTERVAL N:$totalnodes"
  echo "PUTVAL \"$HOSTNAME/exec-Freifunk_Frankfurt/gauge-Online_Nodes\" interval=$INTERVAL N:$onlinenodes"
  echo "PUTVAL \"$HOSTNAME/exec-Freifunk_Frankfurt/gauge-Online_Clients\" interval=$INTERVAL N:$clients"
echo "PUTVAL \"$HOSTNAME/exec-Freifunk_Frankfurt_Clients/gauge-Online_Clients\" interval=$INTERVAL N:$clients"
#  fastdnodes=$(echo $temp|grep -o -P "name\": \"fastd.*?gateway\": true.*?}.*?}")
#  IFS="
#"
#for fastd in $fastdnodes
#do
#  mac=$(echo $fastd|grep -o -P "id\":.*?\"}"|awk '{print $2}'|sed  's/[\",}]//g')
#  fname=$(echo $fastd|awk '{print $2}'|sed 's/[\",\,]//g')
#  fconnect=$(echo $temp|grep -oP "links.*" |grep -o -P "id\":.*?}"|grep "vpn"|grep -c $mac)
#  echo "PUTVAL \"${HOSTNAME:-fastd}/exec-Freifunk_Frankfurt/gauge-Connections_${fname:-name}\" interval=$INTERVAL N:${fconnect:-0}"
#done
while read line
do
  fname=$(echo $line|awk '{print $2}'| tr -cd '[[:alnum:]]._-')
  fconnect=$(echo $line|awk '{print $1}')
  echo "PUTVAL \"${HOSTNAME:-fastd}/exec-Freifunk_Frankfurt/gauge-Connections_${fname}\" interval=$INTERVAL N:${fconnect:-0}"
done < <(echo $temp |jq ".nodes "|grep -e "fastd[0-9]"|grep -v null|sort |uniq -c)
}

[[ -z $1 ]] || 
{
  getdata
  exit 0
}
while sleep "$INTERVAL"; do
  getdata
done