Generate dogstatsd metrics from iStats

parse.sh

#!/bin/bash
#
# while true; do istats --no-graphs; sleep 10; done | ./parse.sh > /dev/udp/127.0.0.1/8125

fan_speed="Fan ([[:digit:]]+) speed: (.*) RPM"
cpu_temp="CPU temp: (.*)°C"
battery_temp="Battery temp: (.*)°C"
current_charge="Current charge:  (.*) mAh  (.*)%"
max_charge="Maximum charge:  (.*) mAh   (.*)%"

while read line; do
  if [[ $line =~ $fan_speed ]]; then
    echo "macbook.fan.speed:${BASH_REMATCH[2]}|g|#fan:${BASH_REMATCH[1]}"
  fi
  if [[ $line =~ $cpu_temp ]]; then
    echo "macbook.cpu.temp:${BASH_REMATCH[1]}|g"
  fi
  if [[ $line =~ $battery_temp ]]; then
    echo "macbook.battery.temp:${BASH_REMATCH[1]}|g"
  fi
  if [[ $line =~ $current_charge ]]; then
    echo "macbook.battery.charge:${BASH_REMATCH[1]}|g"
    echo "macbook.battery.pct:${BASH_REMATCH[2]}|g"
  fi
  if [[ $line =~ $max_charge ]]; then
    echo "macbook.battery.max:${BASH_REMATCH[1]}|g"
  fi
done