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# -*- coding: utf-8 -*-
#
# This file is part of Glances.
#
# Copyright (C) 2018 Nicolargo <nicolas@nicolargo.com>
#
# Glances is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Glances is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
Default AMP
=========
Monitor a process by executing a command line. This is the default AMP's behavor
if no AMP script is found.
Configuration file example
--------------------------
[amp_foo]
enable=true
regex=\/usr\/bin\/foo
refresh=10
one_line=false
command=foo status
"""
from subprocess import check_output, STDOUT, CalledProcessError
from glances.compat import u, to_ascii
from glances.logger import logger
from glances.amps.glances_amp import GlancesAmp
class Amp(GlancesAmp):
"""Glances' Default AMP."""
NAME = ''
VERSION = '1.0'
DESCRIPTION = ''
AUTHOR = 'Nicolargo'
EMAIL = 'contact@nicolargo.com'
def __init__(self, name=None, args=None):
"""Init the AMP."""
self.NAME = name.capitalize()
super(Amp, self).__init__(name=name, 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 = self.get('command')
except OSError as e:
logger.debug('{}: Error while executing service ({})'.format(self.NAME, e))
else:
if res is not None:
try:
msg = u(check_output(res.split(), stderr=STDOUT))
self.set_result(to_ascii(msg.rstrip()))
except CalledProcessError as e:
self.set_result(e.output)
else:
# Set the default message if command return None
# Default sum of CPU and MEM for the matching regex
self.set_result('CPU: {:.1f}% | MEM: {:.1f}%'.format(
sum([p['cpu_percent'] for p in process_list]),
sum([p['memory_percent'] for p in process_list])))
return self.result()
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