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dzVents/examples/notify for dead system-alive check devices.lua

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+-- this script can be used in conjunction with the System-alive checker plug-in.
+-- the plugin pings a list of devices and creates switches for these devices
+-- the reason for this script is to not treat devices as dead immediately after they
+-- do not respond. More often than not, the second ping atempt does work. So only
+-- if the device has been not responding for a while AFTER it is been presumed dead
+-- then this script will notify you
+
+-- put the names of these switches in the devicesToCheck list
+-- you may have to tweak the THRESHOLD depending on the check interval
+
+
+
+
+local THRESHOLD = 5 -- minutes
+local devicesToCheck = {'ESP8266 CV', 'ESP8266 ManCave', 'ESP8266 Watermeter'}
+
+return {
+	active = true,
+	on = {
+		devices = {
+			devicesToCheck
+		},
+		timer = {
+			'every 5 minutes'
+		}
+	},
+	data = {
+		notified = { initial = {} }
+	},
+	execute = function(domoticz, item, triggerInfo)
+
+		if (item.isTimer) then
+
+			-- check all devices that are off and have not been updated in the past 5 minutes and have not been notified for
+			for index, deviceName in pairs(devicesToCheck) do
+
+				local device = domoticz.devices(deviceName)
+
+				if (device.state == 'Off' and
+						device.lastUpdate.minutesAgo >= THRESHOLD and
+						domoticz.data.notified[deviceName] == false) then
+
+					domoticz.notify(deviceName .. ' is not responding anymore.',' ',domoticz.PRIORITY_HIGH)
+
+					-- make sure we only notify once for this device in this case
+					domoticz.data.notified[deviceName] = true
+				end
+			end
+
+
+		else
+			-- it is the device that was triggered
+			domoticz.data.notified[item.name] = false
+
+		end
+
+	end
+}