# -*- coding: utf-8 -*-
#
# This file is part of Glances.
#
# SPDX-FileCopyrightText: 2022 Nicolas Hennion <nicolas@nicolargo.com>
#
# SPDX-License-Identifier: LGPL-3.0-only
#
"""Per-CPU plugin."""
from glances.cpu_percent import cpu_percent
from glances.plugins.glances_plugin import GlancesPlugin
# Define the history items list
items_history_list = [
{'name': 'user', 'description': 'User CPU usage', 'y_unit': '%'},
{'name': 'system', 'description': 'System CPU usage', 'y_unit': '%'},
]
class Plugin(GlancesPlugin):
"""Glances per-CPU plugin.
'stats' is a list of dictionaries that contain the utilization percentages
for each CPU.
"""
def __init__(self, args=None, config=None):
"""Init the plugin."""
super(Plugin, self).__init__(
args=args, config=config, items_history_list=items_history_list, stats_init_value=[]
)
# We want to display the stat in the curse interface
self.display_curse = True
def get_key(self):
"""Return the key of the list."""
return 'cpu_number'
@GlancesPlugin._check_decorator
@GlancesPlugin._log_result_decorator
def update(self):
"""Update per-CPU stats using the input method."""
# Init new stats
stats = self.get_init_value()
# Grab per-CPU stats using psutil's cpu_percent(percpu=True) and
# cpu_times_percent(percpu=True) methods
if self.input_method == 'local':
stats = cpu_percent.get(percpu=True)
else:
# Update stats using SNMP
pass
# Update the stats
self.stats = stats
return self.stats
def msg_curse(self, args=None, max_width=None):
"""Return the dict to display in the curse interface."""
# Init the return message
ret = []
# Only process if stats exist...
if not self.stats or not self.args.percpu or self.is_disabled():
return ret
# Build the string message
if self.is_disabled('quicklook'):
msg = '{:7}'.format('PER CPU')
ret.append(self.curse_add_line(msg, "TITLE"))
# Per CPU stats displayed per line
for stat in ['user', 'system', 'idle', 'iowait', 'steal']:
if stat not in self.stats[0]:
continue
msg = '{:>7}'.format(stat)
ret.append(self.curse_add_line(msg))
# Per CPU stats displayed per column
for cpu in self.stats:
ret.append(self.curse_new_line())
if self.is_disabled('quicklook'):
try:
msg = '{:6.1f}%'.format(cpu['total'])
except TypeError:
# TypeError: string indices must be integers (issue #1027)
msg = '{:>6}%'.format('?')
ret.append(self.curse_add_line(msg))
for stat in ['user', 'system', 'idle', 'iowait', 'steal']:
if stat not in self.stats[0]:
continue
try:
msg = '{:6.1f}%'.format(cpu[stat])
except TypeError:
msg = '{:>6}%'.format('?')
ret.append(self.curse_add_line(msg, self.get_alert(cpu[stat], header=stat)))
return ret
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