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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
#
"""Battery plugin."""
import psutil
from glances.logger import logger
from glances.plugins.glances_plugin import GlancesPlugin
# Batinfo library (optional; Linux-only)
batinfo_tag = True
try:
import batinfo
except ImportError:
logger.debug("batinfo library not found. Fallback to psutil.")
batinfo_tag = False
# Availability:
# Linux, Windows, FreeBSD (psutil>=5.1.0)
# macOS (psutil>=5.4.2)
psutil_tag = True
try:
psutil.sensors_battery()
except Exception as e:
logger.error("Cannot grab battery status {}.".format(e))
psutil_tag = False
class Plugin(GlancesPlugin):
"""Glances battery capacity plugin.
stats is a list
"""
def __init__(self, args=None, config=None):
"""Init the plugin."""
super(Plugin, self).__init__(args=args, config=config, stats_init_value=[])
# Init the sensor class
try:
self.glances_grab_bat = GlancesGrabBat()
except Exception as e:
logger.error("Can not init battery class ({})".format(e))
global batinfo_tag
global psutil_tag
batinfo_tag = False
psutil_tag = False
# We do not want to display the stat in a dedicated area
# The HDD temp is displayed within the sensors plugin
self.display_curse = False
# @GlancesPlugin._check_decorator
@GlancesPlugin._log_result_decorator
def update(self):
"""Update battery capacity stats using the input method."""
# Init new stats
stats = self.get_init_value()
if self.input_method == 'local':
# Update stats
self.glances_grab_bat.update()
stats = self.glances_grab_bat.get()
elif self.input_method == 'snmp':
# Update stats using SNMP
# Not available
pass
# Update the stats
self.stats = stats
return self.stats
class GlancesGrabBat(object):
"""Get batteries stats using the batinfo library."""
def __init__(self):
"""Init batteries stats."""
self.bat_list = []
if batinfo_tag:
self.bat = batinfo.batteries()
elif psutil_tag:
self.bat = psutil
else:
self.bat = None
def update(self):
"""Update the stats."""
self.bat_list = []
if batinfo_tag:
# Use the batinfo lib to grab the stats
# Compatible with multiple batteries
self.bat.update()
# Batinfo support multiple batteries
# ... so take it into account (see #1920)
# self.bat_list = [{
# 'label': 'Battery',
# 'value': self.battery_percent,
# 'unit': '%'}]
for b in self.bat.stat:
self.bat_list.append(
{
'label': 'BAT {}'.format(b.path.split('/')[-1]),
'value': b.capacity,
'unit': '%',
'status': b.status,
}
)
elif psutil_tag and hasattr(self.bat.sensors_battery(), 'percent'):
# Use psutil to grab the stats
# Give directly the battery percent
self.bat_list = [
{
'label': 'Battery',
'value': int(self.bat.sensors_battery().percent),
'unit': '%',
'status': 'Charging' if self.bat.sensors_battery().power_plugged else 'Discharging',
}
]
def get(self):
"""Get the stats."""
return self.bat_list
@property
def battery_percent(self):
"""Get batteries capacity percent."""
if not batinfo_tag or not self.bat.stat:
return []
# Init the b_sum (sum of percent)
# and Loop over batteries (yes a computer could have more than 1 battery)
b_sum = 0
for b in self.bat.stat:
try:
b_sum += int(b.capacity)
except ValueError:
return []
# Return the global percent
return int(b_sum / len(self.bat.stat))