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# -*- coding: utf-8 -*-
#
# This file is part of Glances.
#
# SPDX-FileCopyrightText: 2022 Nicolas Hennion <nicolas@nicolargo.com>
#
# SPDX-License-Identifier: LGPL-3.0-only
#
r"""
SystemV AMP
===========
Monitor the state of the System V init system and service.
How to read the stats
---------------------
Running: Number of running services.
Stopped: Number of stopped services.
Upstart: Number of service managed by Upstart.
Source reference: http://askubuntu.com/questions/407075/how-to-read-service-status-all-results
Configuration file example
--------------------------
[amp_systemv]
# Systemv
enable=true
regex=\/sbin\/init
refresh=60
one_line=true
service_cmd=/usr/bin/service --status-all
"""
from subprocess import check_output, STDOUT
from glances.logger import logger
from glances.globals import iteritems
from glances.amps.amp import GlancesAmp
class Amp(GlancesAmp):
"""Glances' Systemd AMP."""
NAME = 'SystemV'
VERSION = '1.0'
DESCRIPTION = 'Get services list from service (initd)'
AUTHOR = 'Nicolargo'
EMAIL = 'contact@nicolargo.com'
# def __init__(self, args=None):
# """Init the AMP."""
# super(Amp, self).__init__(args=args)
def update(self, process_list):
"""Update the AMP"""
# Get the systemctl status
logger.debug('{}: Update stats using service {}'.format(self.NAME, self.get('service_cmd')))
try:
res = check_output(self.get('service_cmd').split(), stderr=STDOUT).decode('utf-8')
except OSError as e:
logger.debug('{}: Error while executing service ({})'.format(self.NAME, e))
else:
status = {'running': 0, 'stopped': 0, 'upstart': 0}
# For each line
for r in res.split('\n'):
# Split per space .*
line = r.split()
if len(line) < 4:
continue
if line[1] == '+':
status['running'] += 1
elif line[1] == '-':
status['stopped'] += 1
elif line[1] == '?':
status['upstart'] += 1
# Build the output (string) message
output = 'Services\n'
for k, v in iteritems(status):
output += '{}: {}\n'.format(k, v)
self.set_result(output, separator=' ')
return self.result()
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