scriptminder-hat.py

#!/usr/bin/python3

"""
A script that runs periodically to ensure that the tester is configured correctly
"""

import subprocess
import psutil
import time

import RPi.GPIO as GPIO

SCRIPT='hat-test' # the last letters are truncated, because linux sucks

def checkIfProcessRunning(processName):
    '''
    Check if there is any running process that contains the given name processName.
    '''
    #Iterate over the all the running process
    for proc in psutil.process_iter():
        try:
            #print(proc.name())
            # Check if process name contains the given name string.
            if processName.lower() in proc.name().lower():
                return True
        except (psutil.NoSuchProcess, psutil.AccessDenied, psutil.ZombieProcess):
            pass
    return False;

def killScript(processName):
    for proc in psutil.process_iter():
        if processName in proc.name():
            print(processName + " found in table, killing: " + proc.name())
            proc.kill()

def main():
    global SCRIPT
    
    time.sleep(3) # some time for boot stuff to complete
    
    while True:
        if checkIfProcessRunning(SCRIPT):
            print(SCRIPT + " is running, sleeping!")
            time.sleep(3)
        else:
            print(SCRIPT + " is not running, restarting it!")
            killScript(SCRIPT) # just in case, so we don't have multiple copies
            subprocess.run(['/home/precursor/code/bootstrap-mainboard/hat-test.py'])
            time.sleep(3)
            


if __name__ == '__main__':
   main()