Copy of device

[Toulon7559]

Have several Raspberries each with specific devices in the configuration.
Sometimes data from such specific device needed elsewhere.

Have a Python script-solution which reads a selected device by JSON-call & dissects & recompiles as required, e.g. to feed a new Virtual Device for further application, etc..
Rather laboured, especially for Virtual Devices with multiple-field svalues .....

Getting lazy, looking for a quicker & more direct way.
Is it possible to simply online 'copy' or 'link' a device in one Domoticz instance to an equivalent device in another Domoticz-instance?
Any solution is OK, which is shorter & simpler than described in above section 2 of this message.

Or (another way of dealing with this aspect end-to-end):
how remotely reading specific data from a Device at another Domoticz-instance?
Making JSON-call is easy enough, but what is further shortest route to 'dissect' the JSON-file and put specific, selected data into a user variable?

[waaren]

...Rather laboured, especially for Virtual Devices with multiple-field svalues .....

As a possible first step, this dzVents script generates a json file with a selection of attributes of a set of selected devices. This file can be red by a separate script on the remote location and processed.

Code: Select all

-- getDevices.lua (dzVents >= 2.4.21)

scriptVar = getDevices

return {
    on      =   {   timer =   { "at *:03" }, -- Triggers the getJsonPart
                    devices = { "XB*" }},  -- I use this a test / debug trigger
                
    logging =   {   level     =   domoticz.LOG_DEBUG,
                    marker    =   scriptVar 
                },
        
    execute = function(dz, item)

        local idx = {35,133,486, "YoulessLux", 1987 } -- "names" or idx of your devices
        local outFile = "/tmp/dzOut.json"
        local devices = {}

        local function write2File(data, file)
            local out = assert(io.open(file,"w"))
            out:write(data)
            out:close()
        end

        table.insert(devices, {created= (dz.time.rawDate .. " " .. dz.time.rawTime) })
        dz.devices().filter(idx).forEach(function(dv)
            dz.log("Found: " .. dv.name .. "; nValue=" .. dv.nValue .. "; sValue=" .. dv.sValue,dz.LOG_DEBUG)
            local t = { idx=dv.idx, name=dv.name, nValue=dv.nValue, sValue=dv.sValue} -- use dz.setValues to copy the sValue to another device
            table.insert(devices, t)
        end)

        dz.utils.dumpTable(devices)
        write2File(dz.utils.toJSON(devices),outFile)
    end
}

Spoiler: show

cat /tmp/dzOut.json
[{"created":"2019-05-22 16:29:14"},{"idx":35,"nValue":0,"name":"Power","sValue":"7544687;5477757;3243875;7380936;0;2444"},{"idx":133,"nValue":0,"name":"Youless","sValue":"16142878;3152"},{"idx":486,"nValue":0,"name":"Vloer verw","sValue":"19.5;16.5;AutoWithEco"},{"idx":964,"nValue":0,"name":"YoulessLux","sValue":"3729.0833333333"},{"idx":1987,"nValue":0,"name":"Airplanes","sValue":"4227"}]

[Toulon7559]

@waaren

'Laboured' in my understanding is already something like the Python script below.
This script reads from one Domoticz, and recompiles & uploads to another Domoticz.
In that perspective I am looking for a very short script preferably without the recompilation effort .............

Code: Select all

#!/usr/bin/python
# -*- coding = utf-8 to enable reading by simple editors -*-
# (c)2019 script compiled by Toulon7559 from various material from forums, version 00_190522
# --------------------------------------------------
# Line005 = PREPARATION & SETTING
# --------------------------------------------------
# Imports for script-operation
import json
import urllib

# --------------------------------------------------
# Line012 = EXTRACT CONTENT BY JSON-CALL to Domoticz1
# --------------------------------------------------
# RID=9 is RFXCOM-sensor for Wind from TFA_Nexus
page = urllib.urlopen('http://192.168.1.5:8080/json.htm?type=devices&rid=9')
content_test = page.read()
obj_test = json.loads(content_test)
# --------------------------------------------------
# Line019 = Extraction of components
# --------------------------------------------------
# JSON-call for update: /json.htm?type=command&param=udevice&idx=IDX&nvalue=0&svalue=WB;WD;WS;WG;Temp;Temp_WC
print(obj_test)
WB = obj_test['result'][0]['Direction'] 
WD = obj_test['result'][0]['DirectionStr']
WS = obj_test['result'][0]['Speed'] 
WG = obj_test['result'][0]['Gust']
Temp = obj_test['result'][0]['Temp'] 
Temp_WC = obj_test['result'][0]['Chill']
# -------------------------------------------------
# Line030 = Upload to  Virtual Device at Domoticz2
# -------------------------------------------------
#domoticz2 settings
domoticz2_host      	= '192.168.1.6'
domoticz2_port      	= '8080'
domoticz2_url       	= 'json.htm'
domoticz2_idx           = '3305' #idx of new device

#uploading values to domoticz2
url = ("http://" + domoticz2_host + ":" + domoticz2_port + "/" + domoticz2_url+ "?type=command&param=udevice&idx=" + domoticz2_idx + "&nvalue=0&svalue=" + str(WB) + ";" + str(WD) + ";" + str(WS) + ";" + str(WG) + ";" + str(Temp) + ";" + str(Temp_WC))
urllib.urlopen(url)

[waaren]

@waaren
'Laboured' in my understanding is already something like the Python script .

Sorry but I don't understand your point. Please elaborate.

The idea behind the script I posted is that you have the nValue and sValue. With these values you don't have to split the results any further. You can simply use the dzVents method setValue to fill the nValue and sValue of the copy device. For the majority of the devices this is enough and for the remaining devices the JSON can easily be extended to include the missing parts.
The advantage of this approach is that you can include as many devices as you want.

[Toulon7559]

@waaren

Right!
Your dzVents-script is a suitable solution for my question.
But have a personal preference for Python-scripting ...........

[waaren]

@waaren

Right!
Your dzVents-script is a suitable solution for my question.
But have a personal preference for Python-scripting ...........

@Toulon7559, understand. That's one of great things in domoticz. You can reach your goals in many ways.
Moved the topic to the Python subforum.