Muninで、Switchbot の CO2 センサーをモニタリングするためのプラグイン

#!/bin/bash                                                                                                     

#%# family=auto                                                                                                 
#%# capabilities=autoconf                                                                                       

available="yes"

#
# SwitchBot
#
token="xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
secret="xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
swbot_url="https://api.switch-bot.com"

# for v1.1                                                                       
url_list_v11="${swbot_url}/v1.1/devices"
t=$(/bin/date +%s%3N)   # time = Epoch time 13 digits                                                           
nonce=$(/usr/bin/uuidgen)   # uuid                                                                              
sign=$(echo -n "$token$t$nonce" | /usr/bin/openssl dgst -sha256 -hmac "$secret" -binary | /usr/bin/base64 -w 0)

# SwitchBot meter CO2センサーのデバイスID
deviceId="xxxxxxxxxxxx"

function status() {
    url_list_v11_meter="${url_list_v11}/${deviceId}/status"
    /usr/bin/curl -s --request GET \
          -H "Content-Type: application/json" -H "Authorization: ${token}" \
          -H "sign: ${sign}" -H "nonce: ${nonce}" -H "t: ${t}" \
          "${url_list_v11_meter}" \
    | /usr/bin/jq -r '.body | "temperature.value " + (.temperature|tostring) + "\nhumidity.value " + (.humidity\
|tostring) + "\nCO2.value " + (.CO2|tostring)'
}
case $1 in
    autoconf )
        if [ "$available" = "yes" ]; then
            echo "yes"
            exit 0
        fi
        ;;
    config)
        echo "graph_title     SWBOT Meter CO2 温度/湿度/CO2 (リビング)"
        echo "graph_category  sensors"
        echo "graph_vlabel    温度[C]/湿度[%]/CO2[ppm]"
        echo "graph_args      -l 0 -u 70"

        echo "temperature.label   温度[C]"
        echo "temperature.draw    LINE2"
        echo "temperature.colour  00FF00"
        echo "temperature.warning 30"

        echo "humidity.label  湿度[%]"
        echo "humidity.draw   LINE2"
        echo "humidity.colour 00E0FF"

        echo "CO2.label     CO2[ppm]/100"
        echo "CO2.draw      LINE2"
        echo "CO2.cdef      CO2,0.01,*"
        #echo "CO2.warning  25"                                                                                 
        exit 0
        ;;
esac
status

Muninで取得した値を、nagios4 で確認するためのプラグイン。

#!/usr/bin/perl

use strict ;
use warnings ;

use Net::Telnet ;

my $telnet = new Net::Telnet( Host => "127.0.0.1" , Port => 4949 , Timeout => 30 ) ;

$telnet->open() or die( "Can't connect" ) ;
$telnet->waitfor( '/#.*$/' ) ;

# munin で読み込む項目を指定
$telnet->print( "fetch switchbot_meter_co2\n" ) ;

my $flag = 0 ;
my %value = () ;

# データを読み込む
while( my $line = $telnet->getline() ) {
    last if ( $line =~ /^\.$/ )  ;
    if ( $line =~ /^([0-9a-zA-Z_]+)\.value\s+([\.0-9]+)\s*$/ ) {
	$value{$1} = $2 ;
	$flag = 1 ;
    }
}
# nagios プラグインとして範囲を確認
my $st = 0 ;
my $item = "-" ;

my %status = ( 0 => "OK" , 1 => "Warning" , 2 => "Critical" , 3 => "Unknown" ) ;

if ( exists( $value{'temperature'} ) ) {
    if ( $value{'temperature'} > $ARGV[1] ) {
	$st = 2 ; $item = "temperature" ;
    } elsif ( $value{'temperature'} > $ARGV[0] ) {
	$st = 1 ; $item = "temperature" ;
    }
}

if ( exists( $value{'CO2'} ) ) {
    if ( $value{'CO2'} > $ARGV[3] ) {
	$st = 2 ; $item = "CO2" ;
    } elsif ( $value{'CO2'} > $ARGV[2] ) {
	$st = 1 ; $item = "CO2" ;
    }
}

if ( !$flag ) {
    $st = 3 ; $item = "Error" ;
}

# 最終結果の出力
printf( "SBMT_MeterCO2 %s %s %2.1f[C] %2.0f[%%] %4.0f[ppm]\n" ,
	$status{$st} , $item ,
	$value{'temperature'} , $value{'humidity'} , $value{'CO2'} ) ;

exit $st ;