X240 Battery Plugin for Mackerel.io

x240battery.sh

#!/bin/bash
#
# [plugin.metrics.battery]
# command = "/path/to/x240battery.sh"
#

LANG=C

if [ x$MACKEREL_AGENT_PLUGIN_META = x1 ]; then
    cat <<EOF
# mackerel-agent-plugin
{
  "graphs": {
    "battery": {
      "label": "X240 Battery capacity",
      "unit": "integer",
      "metrics": [
        { "name": "BAT0", "label": "Front battery" },
        { "name": "BAT1", "label": "Rear battery" }
      ]
    }
  }
}
EOF
    exit 0
fi

cap0=$(cat /sys/class/power_supply/BAT0/capacity)
cap1=$(cat /sys/class/power_supply/BAT1/capacity)
echo -n "battery.BAT0	${cap0}	"
date +%s
echo -n "battery.BAT1	${cap1}	"
date +%s