Domoticz

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{"command": "setuservariable", "idx": 1, "value": "12.3" }

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[{"id":"c194714d.dd08b","type":"inject","z":"4268f77.7847488","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":160,"y":220,"wires":[["a77e308e.7145b8"]]},{"id":"a77e308e.7145b8","type":"function","z":"4268f77.7847488","name":"Prepare URL RPi1","func":"var url = \"http://127.0.0.1:8080\";\nmsg.url = url + \"/json.htm?type=command&param=getuservariable&idx=1\";\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","x":370,"y":220,"wires":[["4f6ff499.397524"]]},{"id":"4f6ff499.397524","type":"http request","z":"4268f77.7847488","name":"HTTP","method":"PUT","ret":"obj","paytoqs":"ignore","url":"","tls":"","persist":false,"proxy":"","authType":"","x":570,"y":220,"wires":[["4bae7778.ac76c"]]},{"id":"4bae7778.ac76c","type":"debug","z":"4268f77.7847488","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","statusVal":"","statusType":"auto","x":750,"y":220,"wires":[]}]

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msg.payload = {"command": "setuservariable", "idx": 2, "value": ((parseInt (msg.payload.result.0.Value))/10).toString()};
return msg;

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msg.payload = {"command": "setuservariable", "idx": 2, "value": ((parseInt (msg.payload.result.0.Value))/10).toString()};
return msg;

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msg.payload = msg.payload.result[0].Value;

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{"command": "setuservariable", "idx": 1, "value": "12.3" }

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	void SendDeviceInfo(int HwdID, uint64_t DeviceRowIdx, const std::string &DeviceName, const unsigned char *pRXCommand);
	void SendSceneInfo(uint64_t SceneIdx, const std::string &SceneName);

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/json.htm?type=command&param=getuservariable&idx=IDX

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--[[
        script to send some attributes of a uservariable via MQTT when requested in MQTT

        requirements
            dzVents 3.1.0 ( for executeShellCommand )
            mosquitto_pub on OS level
            mosquitto_sub on OS level -- For testing only

        triggered by:
            MQTT command to domoticz/in

            examples:
            mosquitto_pub -h <MQTT host> -m '{ "command": "customevent", "event" : "getUservariable", "data" : "{\"variable\" : \"<variable name>\"}" }' -t domoticz/in
            mosquitto_pub -h <MQTT host> -m '{ "command": "customevent", "event" : "getUservariable", "data" : "{\"variable\" :  <variable id> }" }' -t domoticz/in
            mosquitto_pub -h <MQTT host> -m '{ "command": "customevent", "event" : "getUservariable", "data" : "{\"variable\" :  <variable id> , \"host\" : \"ip of <MQTT Host>\" }" }' -t domoticz/in
            mosquitto_pub -h <MQTT host> -m '{ "command": "customevent", "event" : "getUservariable", "data" : "{\"variable\" : \"<variable name>\", \"host\" : \"ip of <other MQTT Host>\" , \"topic\" : \" <other topic/sub topic> \"}" }' -t domoticz/in

            defaults: host ==>> localhost, topic ==>> domoticz/out


        test in
        -------
        mosquitto_pub -h nuc -m '{ "command": "customevent", "event" : "getUservariable", "data" : "{\"variable\" : \"MQTTexample\", \"host\" : \"nuc\" , \"topic\" : \"otherTopic/subtopic/subsubtopic\"}" }' -t domoticz/in

        listening with
        --------------
        mosquitto_sub -F "%U - %t - %p" -v -p 1883 -t "#"

        1609856166.651730901 - domoticz/in - { "command": "customevent", "event" : "getUservariable", "data" : "{\"variable\" : \"MQTTexample\", \"host\" : \"nuc\" , \"topic\" : \"otherTopic/subtopic/subsubtopic\"}" }
        1609856166.855446136 - otherTopic/subtopic/subsubtopic - {"variable":{"id":39,"lastUpdate":"2021-01-05 14:31:54","name":"MQTTexample","type":"string","value":"Hi there"}}

]]

local scriptVar = 'getUservariable'

return
{
    on =
    {
        customEvents =
        {
           scriptVar,
        },
    },

    logging =
    {
        level = domoticz.LOG_DEBUG, -- change to domoticz.LOG_ERROR when all tested and OK
        marker = scriptVar,
    },

    execute = function(dz, item)

        if item.ShellCommandResponse then
            if item.statusCode ~= 0 then
                dz.log('Problem with shellExecuteCommand ' .. item.trigger ,dz.LOG_ERROR)
                dz.log(item,dz.LOG_DEBUG)
            end
            return
        end

        local function getVariableData(v)
            local json = {} json.variable = {}
            json.variable.name = v.name
            json.variable.id = v.id
            json.variable.value = v.value
            json.variable.type = v.type
            json.variable.lastUpdate = v.lastUpdate.raw

            dz.log('json: ' .. dz.utils.toStr(json),dz.LOG_DEBUG)

            return dz.utils.toJSON(json)
        end
        
        local function sendMQTT(t)
            local variable = dz.variables(t.variable)
            local topic = t.topic or 'domoticz/out'
            local host = ( t.host and (' -h ' .. t.host) ) or ''

            dz.executeShellCommand(
            {
                command = 'mosquitto_pub ' ..  host .. ' -m ' .. "'" .. getVariableData(variable) .. "'" .. ' -t '  .. topic ,
                callback = scriptVar,
            })
        end

       --main
       if item.json then
           sendMQTT(item.json)
       else
           dz.log('Problem with customEvent ' .. item.trigger .. ' data', dz.LOG_ERROR)
           dz.log(item, dz.LOG_DEBUG)
        end
    end
}