Last Will and Testament Notification Function for mqttwarn. https://github.com/jpmens/mqttwarn

00readme.md

note; I have all my scripts setup so that the lwt (last will and testament) publishes 'offline' if the scripts die.

functions.py

################################################################
#####     Last Will and Testament Notification Function    #####
################################################################

#lwt offline message to check for
lwtmsg_offline = 'offline' 

#last will and Testaments topics to not suppress
lwttopics2mon = [ 
        '/lwt/testing1', #testing topic 

]

#filter to check to see if the device/software is offline
def lwtfilter(topic, message):
    for t in lwttopics2mon:
        if t in topic:
            if message == lwtmsg_offline:
              return False #dont suppress the notifcations
        return True #suppress the notification

mqtwarn.ini

[lwt]
topic = /lwt/#
targets = log:info,pushover:software
filter = lwtfilter()
format = Device: {topic} went ==> {payload} @{_dthhmm}
title = MQTT LWT Notification

Just added a change to allow you to specify the lwt payload in mqttwarn.

mqtt-tools/mqttwarn@1c24e6a