Service restarter on no log output

restart_service.sh

#!/bin/bash
# simple script to check logs, if no entries have been made in 45 seconds restart
set -x
PATH=$PATH:/usr/sbin

TS=$(date +%s)

timer1=$(expr $TS - $(date +%s -r /path/to/some/file.log)) # make sure to set the log path here

if [ "$timer1" -gt 45 ]
then
        echo $timer1
        echo "restarting service due to no activity for 45 seconds"
        sudo service mycoolservice restart    # you can change this for something else such as sending email or even rebooting the machine.
fi