Alert Manager

[xxyzz]

I have written this script for surveillance of alarms. It will only generate one alarm if an Object is not updated within a range of time. You can use it as Resident or Scheduled Script. It takes every object with the tag "Alarm". Change the "controlltime" to your desire.

Code:

--This script is for Object surveillance passivley with the updatetime property
--Alarms will be updated on change!

alarms = grp.tag('Alarm') --add the Tag or Tags of the Object that need surveillance

controlltime = 30 --Allowed Time between recieved Telegramms in Seconds

--initializing Tables for Alarming
currentstate = {}
previousstate = storage.get("previousstate") or {}


now = os.time()

--Iteration throgh the alarms Table to get the update time of every Object

for index, alarm in ipairs(alarms) do
    lastrecieved = alarm.updatetime

    local online
    --calculating the Timedelta and comparing it with our Variable
    if (now - lastrecieved) > controlltime then
        online = false
    else
        online = true
    end

    -- Store the current status in the currentstatus table
    currentstate[alarm.id] = {id = alarm.id, comment = alarm.comment, online = online}

    -- Compare the current status with the previous status
    if previousstate[alarm.id] == nil or currentstate[alarm.id].online ~= previousstate[alarm.id].online then
        if not currentstate[alarm.id].online then
            alert("Alarm " .. currentstate[alarm.id].comment .. " nicht verfügbar")
          else
                  alert("Alarm " ..currentstate[alarm.id].comment .. " verfügbar")
        end
    end

end

-- Log the current status
-- log(currentstate)

-- Save the current status to persistent storage as previous status
storage.set("previousstate", currentstate)

And this script that will actively send a read request to check if alarms are still available. It will take every objekt with the tag "Alarm". This is designed to be used as resedent or scheduled script.

Code:

-- Variables as Tag
alarms = grp.tag('Alarm')


currentstatus = {}
previousstate = storage.get("previousstate") or {}

-- Iterate over all alarms
for index, alarm in ipairs(alarms) do
    value, responding = grp.readvalue(alarm.address, readtimeout)
    local online

    if responding == "timeout" then
        online = false
    else
        online = true
    end

    -- Store the current status in the currentstatus table
    currentstatus[alarm.id] = {id = alarm.id, name = alarm.name, online = online}

    -- Compare the current status with the previous status
    if previousstate[alarm.id] == nil or currentstatus[alarm.id].online ~= previousstate[alarm.id].online then
        if not currentstatus[alarm.id].online then
            alert("Alarm " .. currentstatus[alarm.id].name .. " nicht verfügbar")
        end
    end
end

-- Log the current status
--log(currentstatus)

-- Save the current status to persistent storage as previous status
storage.set("previousstate", currentstatus)