pwrstat

#!/usr/bin/env python3

"""
pwrstat - Plugin to monitor CyberPower UPS via pwrstat

by Nelson Minar <nelson@monkey.org>, placed into the public domain
https://nelsonslog.wordpress.com/2012/01/26/cyberpower-pwrstatd-notes/

Updated by Justin Settle

Additional updates by Ken Link <klink@numberzero.org>

Unfortunately this plugin must run as root, because pwrstat requires
root to even read data from the UPS.
"""

import sys, subprocess

# config
if len(sys.argv) > 1:
 if sys.argv[1] == "config":
    print("""
graph_title CyberPower UPS Status
graph_category sensors
graph_vlabel value
graph_info Power Information from attached CyberPower UPS
graph_args '-l 0'

inV.label Utility Voltage
inV.info Line Voltage from Utility Provider
inV.min 0
inV.max 200

outV.label Output Voltage
outV.info Output Voltage from UPS
outV.min 0
outV.max 200

battery.label Battery Capacity (Percent)
battery.info Battery Charge in Percent
battery.min 0
battery.max 100

runtime.label Remaining Runtime (Minutes)
runtime.info Estimated Time Remaining on Battery Power
runtime.min 0
runtime.max 200

loadWatts.label Load (Watts)
loadWatts.info Current load in UPS in Watts
loadWatts.min 0
loadWatts.max 600

loadPct.label Load (Percent)
loadPct.info Current load on UPS in Percentage
loadPct.min 0
loadPct.max 100
loadPct.draw AREA
""")
    sys.exit(0)
 else:
    sys.stderr.write("Unknown argument %s\n" % sys.argv[1])
    sys.exit(0)

# fetch

output = subprocess.check_output(("/usr/sbin/pwrstat", "-status"), shell=False)
output = output.split(b'\n')
data = {}
for datum in output[10:-2]:
 name = datum[:29].strip(b'.').strip()
 value = datum[31:].strip()
 data[name] = value

print("inV.value", data[b"Utility Voltage"].split()[0].decode())
print("outV.value", data[b"Output Voltage"].split()[0].decode())
print("battery.value", data[b"Battery Capacity"].split()[0].decode())
print("runtime.value", data[b"Remaining Runtime"].split()[0].decode())
print("loadWatts.value", data[b"Load"].split()[0].decode())
print("loadPct.value", data[b"Load"].split()[1].split(b'(')[1].decode())

sys.exit(0)

# This is the pwrstat format that we parse. Note, it contains tabs.
# Comes from pwrstat version 1.2
exampleOutput="""
The UPS information shows as following:

Properties:
 Model Name................... UPS CP1000AVRLCD
 Firmware Number.............. BFC7101.4K1
 Rating Voltage............... 120 V
 Rating Power................. 600 Watt

Current UPS status:
 State........................ Normal
 Power Supply by.............. Utility Power
 Utility Voltage.............. 125 V
 Output Voltage............... 124 V
 Battery Capacity............. 100 %
 Remaining Runtime............ 77 min.
 Load......................... 54 Watt(9 %)
 Line Interaction............. None
 Test Result.................. Passed at 2012/01/25 01:39:47
 Last Power Event............. None
"""