add switchbotmeter_multi
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shakemid
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f2080448e1
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#!/bin/bash
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# -*- sh -*-
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: << =cut
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=head1 NAME
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switchbotmeter_multi - Munin plugin to monitor temperature and humidity with SwitchBot Meter
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=head1 CONFIGURATION
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Obtain a token, secret and deviceid for SwitchBot API. See the following website.
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https://github.com/OpenWonderLabs/SwitchBotAPI
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=head1 ENVIRONMENT VARIABLES
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env.token : Token to access SwitchBot API. (Required)
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env.secret : Secret to access SwitchBot API. (Required)
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env.deviceid : Device ID(s) of SwitchBot Meter separated by white space. (Required)
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env.interval : Interval in seconds for API access. (Optional, default is 0)
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=head1 NOTES
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The amount of SwitchBot API calls per day is limited to 10000 times.
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If munin-node executes this plugin every 5 minutes, the API will be called 288 times a day.
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You can use env.interval parameter to prevent frequent API access. For example, if you set
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env.interval 900, the API response will be cached to local file for 900 seconds(15 minutes).
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=head1 AUTHOR
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K.Cima https://github.com/shakemid
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=head1 LICENSE
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GPLv2
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SPDX-License-Identifier: GPL-2.0-only
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=head1 Magic markers
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#%# family=contrib
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#%# capabilities=
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=cut
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. "${MUNIN_LIBDIR}/plugins/plugin.sh"
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set -o nounset
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set -o pipefail
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# Token to access SwitchBot API
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token=${token:?}
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# Secret to access SwitchBot API
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secret=${secret:?}
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# Device ID of SwitchBot Meter
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deviceids=${deviceid:?}
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# Interval for API access (second)
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interval=${interval:-0}
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# Plugin Name
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pluginname=$( basename "$0" )
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config() {
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local deviceid
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cat <<EOF
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multigraph ${pluginname}_temperature
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graph_title SwitchBot Meter Temperature
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graph_category sensors
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graph_scale no
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graph_vlabel Temperature C
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graph_args --base 1000
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EOF
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for deviceid in ${deviceids}
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do
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echo ${deviceid}.label ${deviceid}
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done
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cat <<EOF
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multigraph ${pluginname}_humidity
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graph_title SwitchBot Meter Humidity
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graph_category sensors
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graph_scale no
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graph_vlabel Humidity %
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graph_args --base 1000
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EOF
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for deviceid in ${deviceids}
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do
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echo ${deviceid}.label ${deviceid}
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done
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cat <<EOF
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multigraph ${pluginname}_battery
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graph_title SwitchBot Meter Battery
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graph_category sensors
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graph_scale no
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graph_vlabel Battery %
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graph_args --base 1000
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EOF
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for deviceid in ${deviceids}
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do
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echo ${deviceid}.label ${deviceid}
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done
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}
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fetch() {
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local deviceid func val
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for deviceid in ${deviceids}
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do
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declare $( do_fetch ${deviceid} )
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done
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for func in temperature humidity battery
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do
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echo multigraph ${pluginname}_${func}
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for deviceid in ${deviceids}
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do
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val=${func}_${deviceid}
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echo ${deviceid}.value ${!val}
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done
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done
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}
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do_fetch() {
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local deviceid time_now time_modified
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deviceid=$1
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if [ "${interval}" -gt 0 ]; then
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time_now=$( date +%s )
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if [ -f "${MUNIN_STATEFILE}_${deviceid}" ]; then
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time_modified=$( stat --format=%Y "${MUNIN_STATEFILE}_${deviceid}" )
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else
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# initial run
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time_modified=0
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fi
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if [ $(( time_now - time_modified )) -le "${interval}" ]; then
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# read from cache
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cat "${MUNIN_STATEFILE}_${deviceid}"
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else
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# update cache
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fetch_api ${deviceid} | tee "${MUNIN_STATEFILE}_${deviceid}"
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fi
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else
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fetch_api ${deviceid}
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fi
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}
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fetch_api() {
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local deviceid temperature humidity battery t sign nonce response statusCode
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deviceid=$1
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t=$( date +'%s000' )
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nonce=$( openssl rand -base64 32 )
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sign=$( echo -n ${token}${t}${nonce} | openssl dgst -sha256 -hmac ${secret} -binary | base64 )
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response=$( curl -s -H "Content-Type:application/json;charset=utf8" -H "Authorization:${token}" -H "t:${t}" -H "nonce:${nonce}" -H "sign:${sign}" "https://api.switch-bot.com/v1.1/devices/${deviceid}/status" )
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statusCode=$( echo "${response}" | jq '.statusCode' )
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if [ "${statusCode}" -ne 100 ]; then
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echo Error with statusCode = "${statusCode}" 1>&2
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exit 1
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fi
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temperature=$( echo "${response}" | jq '.body.temperature' )
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humidity=$( echo "${response}" | jq '.body.humidity' )
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battery=$( echo "${response}" | jq '.body.battery' )
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echo temperature_${deviceid}=${temperature} humidity_${deviceid}=${humidity} battery_${deviceid}=${battery}
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}
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# Main
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case ${1:-} in
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config)
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config
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if [ "${MUNIN_CAP_DIRTYCONFIG:-}" = "1" ]; then
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fetch
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fi
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;;
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*)
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fetch
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;;
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esac
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exit 0
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