prometheus text exporter for hdparm sleep state

sleepstate.py

#!/usr/bin/env python3

# usage: hdparm -C /dev/sd[a-d] | ./sleepstate.py

import sys

hdparm_output = sys.stdin.read()

lines = list(filter(lambda line: line, hdparm_output.splitlines()))
drives = [lines[i : i + 2] for i in range(0, len(lines), 2)]

states = list(
    map(
        lambda drive: (
            drive[0].rstrip(":"),
            drive[1].lstrip().removeprefix("drive state is:").strip(),
        ),
        drives,
    )
)

for disk, state in states:
    is_sleeping = 1 if state == "standby" else 0
    print(f'hdparm_sleep_state{{disk="{disk}"}} {is_sleeping}')