load-to-blink1

#!/usr/bin/python3
#
# An alternative to
# https://github.com/todbot/blink1/blob/master/linux/contrib/load-to-blink1.sh
# which automatically changes the color of a blink(1) based on system load.
#
# Normally sits at faint green - as the system get more loaded, the blink(1)
# becomes redder and more bright.

import os
import subprocess
import argparse

parser = argparse.ArgumentParser()
parser.add_argument("--debug", action="store_true")
args = parser.parse_args()

MIN_INTENSITY = 40
REDNESS_MULTIPLIER = 20

(one, five, fifteen) = os.getloadavg()

if args.debug:
    print("one=" + str(one) + ", five=" + str(five) + ", fifteen=" + str(fifteen))

redness = min(255, ((fifteen * REDNESS_MULTIPLIER) + (five * REDNESS_MULTIPLIER) + (one * REDNESS_MULTIPLIER)))

if redness < MIN_INTENSITY:
    greenness = MIN_INTENSITY + (MIN_INTENSITY - redness)
else:
    greenness = 0

blueness = 0

if args.debug:
    print("redness=" + str(redness) + ", greenness=" + str(greenness) + ", blueness=" + str(blueness))

subprocess.call(["blink1-tool", "-m 5000", "--rgb=" + str(redness) + "," + str(greenness) + "," + str(blueness)], stdout = subprocess.DEVNULL)