Set a variable based on alert

InfluxDB 1 Kapacitor
1

Hi,

I have two alert nodes in one script, one which checks CPU over 10 minutes and another that sends an alert if no data is receveived. I’d like to assign a variable based on which alert is sent and use this in the alert message to alter the text depending on the alert.

The alerts are fired as:

Critical = CPU > 90% for 10 minutes
Warn = Deadman no througput for 2 minutes

Then the OK state when everything is back to normal. I’m using the
{{if eq .Level "CRIT}} {{ELSE IF ex .Level “WARN”}} {{ELSE}}

template syntax to customise the message based on whether it is a critical alert or not.

These both alert fine, but there is no distinguishing between whether the OK message was related to the deadman or the critical alert. I would like to assign a variable to each alert node so that when the alert is fired and comes back to the OK state i can change the text in the message to reflect this.

    var trigger = data
    |alert()
        .crit(lambda: "state_duration" >= 10)
        .stateChangesOnly()
        .message(message)
        .id(idVar)
        .idTag(idTag)
        .levelTag(levelTag)
        .messageField(messageField)
        .durationField(durationField)
        .details(details)
    **var type = "general"**



var deadman = data
|stats(2m)
    .align()
|derivative('emitted')
    .unit(2m)
    .nonNegative()
// |stateCount(lambda: "emitted" <= 0.0)
//     .as('DeadCount')
|alert()
    .warn(lambda: "emitted" <= 0.0)
    .stateChangesOnly()
    .details(details)
    .message(message)
    .id(idVar)
    .idTag(idTag)
    .levelTag(levelTag)
    .messageField(messageField)
    .durationField(durationField)
    **var type = "deadman"**

where the variable “type” is sent only when that node sends an alert.

Then in the alert message in the {{ eq .Level “OK” }} i can use the variable to work out what text to show.

I did try to do this but i get the error:
invalid TICKscript: name "type" is undefined. Names in scope: stream,db,measurement,idVar,time,rp,groupBy,whereFilter,name

I know assigning the variable at the top of my script will fix that error but I need to define it further down the script. Is this possible? Am i over complicating things?

Thanks

PhilB