shutdownscript.py

## Download Monitor v0.2 - June 2017

# Set the interface you wish to monitor, eg: eth0, wlan0, usb0
# enp4s0 ist die andere Buchse
INTERFACE = "enp3s0"

# Set the minimum download speed in KB/s that must be achieved.
MINIMUM_SPEED = 2

# Set the number of retries to test for the average minimum speed.
RETRIES = 60

# Set the interval (in seconds), between retries to calculate average speed.
INTERVAL = 120

# Set the interval (in seconds), between recalculating average speed
LONG_INTERVAL = 3600

# Initial uptime after boot (Ben Okt 2020) 3 hours
INIT_INTERVAL = 10800

import os, time
from commands import getoutput # deprecated, geht nur mit python2 nicht 3

def worker ():
    RETRIES_COUNT = 1
    SPEED = 0
    # initialer sleep - Ben Feb 2020
    time.sleep(INIT_INTERVAL) 
    while True:
        # Sum downstream and upstream and add with previous speed value
        # {print $1} use just downstream
        # {print $2} use just upstream
        # {print $1+$2} use sum of downstream and upstream
        SPEED += int(float(getoutput("ifstat -i %s 1 1 | awk '{print $1+$2}' | sed -n '3p'" % INTERFACE)))

        if RETRIES_COUNT > RETRIES:
            # Calculate average speed from all retries
            AVG_SPEED = int(float(SPEED) / float(RETRIES_COUNT))

            # If average speed is below minimum speed - suspend
            if AVG_SPEED < MINIMUM_SPEED:
                os.system("shutdown now")
            # Else reset calculations and wait for longer to retry calculation
            else:
                RETRIES_COUNT = 1
                SPEED = 0
                time.sleep(LONG_INTERVAL)
        else:
            RETRIES_COUNT += 1
            time.sleep(INTERVAL)

worker()