Domoticz crashes on complex data in customEvent [Solved]

[sabcio]

Hi,

trying out customEvents but my domoticz service crashes each time I try to send some more data

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2020-03-21 10:58:19.235 MQTT: Topic: domoticz/in, Message: {"command":"customevent","event":"notResponsive","data":[{"idx":29,"test":"ok"}]}
2020-03-21 10:58:19.244 Error: Domoticz(pid:32647, tid:32690('EventSystemQueu')) received fatal signal 6 (Aborted)
2020-03-21 10:58:19.244 Error: siginfo address=0x7f87, address=0xffffffff

I've tried different payloads, every time a valid json. The only thing that works is when data is a plain integer, string value:

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Message: {"command":"customevent","event":"notResponsive","data":29}

Does not work:

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Message: {"command":"customevent","event":"notResponsive","data":[{"idx":29,"test":"ok"}]}
Message: {"command":"customevent","event":"notResponsive","data":{"idx":29,"test":"ok"}}

The script doesn't do anything yet, it just logs data output:

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return {
	on = {
        customEvents =
        {
            'notResponsive',
        }
	},

	logging = {
        level = domoticz.LOG_DEBUG,
        marker = "BatteryStatus"
    },

	execute = function(dz, item, info)
		dz.log(item.data)
		dz.log(item.isCustomEvent)
	end
}

EDIT1: I thought I should parse json but it still failed and then I tried empty execute function which also crashes.

[MrHobbes74]

Can you try to put the data json in a string? I think that is the problem. I’m not 100% sure, but I think you can’t provide a json object, you can only provide a string, that can contain a json object.

{"command":"customevent","event":"notResponsive","data":”[{"idx":29,"test":"ok"}]”}

[sabcio]

Ok, that does work, thanks MrHobbes74. Does not make sense to me but I'm no lua expert. Here's a working example

Message payload:

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{"command":"customevent","event":"notResponsive","data":"{\"idx\":29,\"test\":\"ok\"}"}'

Function:

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	execute = function(dz, item)
	    dz.log(item.data["idx"])
	    dz.log(item.data["test"])
	end

[MrHobbes74]

It has nothing to do with Lua. The reason is that the parameter ‘data’ can only contain a string. In that string, you can also put a flat raw json string. As long as it is a string . In dzVents, if the string contains a json object, it allows access to the object. In other cases (no json object) you get the whole string.