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# -*- coding: utf-8 -*- |
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# |
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# This file is part of Glances. |
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# |
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# Copyright (C) 2015 Nicolargo <[email protected]> |
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# |
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# Glances is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU Lesser General Public License as published by |
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# the Free Software Foundation, either version 3 of the License, or |
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# (at your option) any later version. |
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# |
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# Glances is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU Lesser General Public License for more details. |
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# |
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# You should have received a copy of the GNU Lesser General Public License |
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# along with this program. If not, see <http://www.gnu.org/licenses/>. |
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"""CPU plugin.""" |
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from glances.compat import iterkeys |
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from glances.cpu_percent import cpu_percent |
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from glances.plugins.glances_plugin import GlancesPlugin |
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import psutil |
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# SNMP OID |
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# percentage of user CPU time: .1.3.6.1.4.1.2021.11.9.0 |
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# percentages of system CPU time: .1.3.6.1.4.1.2021.11.10.0 |
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# percentages of idle CPU time: .1.3.6.1.4.1.2021.11.11.0 |
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snmp_oid = {'default': {'user': '1.3.6.1.4.1.2021.11.9.0', |
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'system': '1.3.6.1.4.1.2021.11.10.0', |
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'idle': '1.3.6.1.4.1.2021.11.11.0'}, |
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'windows': {'percent': '1.3.6.1.2.1.25.3.3.1.2'}, |
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'esxi': {'percent': '1.3.6.1.2.1.25.3.3.1.2'}, |
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'netapp': {'system': '1.3.6.1.4.1.789.1.2.1.3.0', |
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'idle': '1.3.6.1.4.1.789.1.2.1.5.0', |
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'nb_log_core': '1.3.6.1.4.1.789.1.2.1.6.0'}} |
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# Define the history items list |
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# - 'name' define the stat identifier |
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# - 'color' define the graph color in #RGB format |
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# - 'y_unit' define the Y label |
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# All items in this list will be historised if the --enable-history tag is set |
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items_history_list = [{'name': 'user', 'color': '#00FF00', 'y_unit': '%'}, |
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{'name': 'system', 'color': '#FF0000', 'y_unit': '%'}] |
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class Plugin(GlancesPlugin): |
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"""Glances CPU plugin. |
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'stats' is a dictionary that contains the system-wide CPU utilization as a |
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percentage. |
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""" |
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def __init__(self, args=None): |
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"""Init the CPU plugin.""" |
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super(Plugin, self).__init__(args=args, items_history_list=items_history_list) |
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# We want to display the stat in the curse interface |
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self.display_curse = True |
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# Init stats |
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self.reset() |
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def reset(self): |
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"""Reset/init the stats.""" |
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self.stats = {} |
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@GlancesPlugin._log_result_decorator |
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def update(self): |
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"""Update CPU stats using the input method.""" |
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# Reset stats |
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self.reset() |
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# Grab CPU stats using psutil's cpu_percent and cpu_times_percent |
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# methods |
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if self.input_method == 'local': |
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# Get all possible values for CPU stats: user, system, idle, |
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# nice (UNIX), iowait (Linux), irq (Linux, FreeBSD), steal (Linux 2.6.11+) |
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# The following stats are returned by the API but not displayed in the UI: |
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# softirq (Linux), guest (Linux 2.6.24+), guest_nice (Linux 3.2.0+) |
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self.stats['total'] = cpu_percent.get() |
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cpu_times_percent = psutil.cpu_times_percent(interval=0.0) |
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for stat in ['user', 'system', 'idle', 'nice', 'iowait', |
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'irq', 'softirq', 'steal', 'guest', 'guest_nice']: |
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if hasattr(cpu_times_percent, stat): |
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self.stats[stat] = getattr(cpu_times_percent, stat) |
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elif self.input_method == 'snmp': |
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# Update stats using SNMP |
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if self.short_system_name in ('windows', 'esxi'): |
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# Windows or VMWare ESXi |
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# You can find the CPU utilization of windows system by querying the oid |
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# Give also the number of core (number of element in the table) |
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try: |
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cpu_stats = self.get_stats_snmp(snmp_oid=snmp_oid[self.short_system_name], |
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bulk=True) |
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except KeyError: |
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self.reset() |
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# Iter through CPU and compute the idle CPU stats |
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self.stats['nb_log_core'] = 0 |
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self.stats['idle'] = 0 |
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for c in cpu_stats: |
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if c.startswith('percent'): |
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self.stats['idle'] += float(cpu_stats['percent.3']) |
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self.stats['nb_log_core'] += 1 |
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if self.stats['nb_log_core'] > 0: |
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self.stats['idle'] = self.stats[ |
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'idle'] / self.stats['nb_log_core'] |
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self.stats['idle'] = 100 - self.stats['idle'] |
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self.stats['total'] = 100 - self.stats['idle'] |
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else: |
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# Default behavor |
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try: |
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self.stats = self.get_stats_snmp( |
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snmp_oid=snmp_oid[self.short_system_name]) |
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except KeyError: |
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self.stats = self.get_stats_snmp( |
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snmp_oid=snmp_oid['default']) |
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if self.stats['idle'] == '': |
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self.reset() |
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return self.stats |
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# Convert SNMP stats to float |
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for key in iterkeys(self.stats): |
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self.stats[key] = float(self.stats[key]) |
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self.stats['total'] = 100 - self.stats['idle'] |
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# Update the history list |
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self.update_stats_history() |
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# Update the view |
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self.update_views() |
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return self.stats |
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def update_views(self): |
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"""Update stats views.""" |
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# Call the father's method |
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super(Plugin, self).update_views() |
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# Add specifics informations |
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# Alert and log |
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for key in ['user', 'system', 'iowait']: |
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if key in self.stats: |
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self.views[key]['decoration'] = self.get_alert_log(self.stats[key], header=key) |
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# Alert only |
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for key in ['steal', 'total']: |
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if key in self.stats: |
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self.views[key]['decoration'] = self.get_alert(self.stats[key], header=key) |
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# Optional |
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for key in ['nice', 'irq', 'iowait', 'steal']: |
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if key in self.stats: |
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self.views[key]['optional'] = True |
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def msg_curse(self, args=None): |
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"""Return the list to display in the UI.""" |
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# Init the return message |
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ret = [] |
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# Only process if stats exist and plugin not disable |
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if not self.stats or args.disable_cpu: |
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return ret |
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# Build the string message |
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# If user stat is not here, display only idle / total CPU usage (for |
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# exemple on Windows OS) |
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idle_tag = 'user' not in self.stats |
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# Header |
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msg = '{0:8}'.format('CPU') |
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ret.append(self.curse_add_line(msg, "TITLE")) |
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# Total CPU usage |
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msg = '{0:>5}%'.format(self.stats['total']) |
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if idle_tag: |
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ret.append(self.curse_add_line( |
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msg, self.get_views(key='total', option='decoration'))) |
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else: |
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ret.append(self.curse_add_line(msg)) |
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# Nice CPU |
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if 'nice' in self.stats: |
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msg = ' {0:8}'.format('nice:') |
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ret.append(self.curse_add_line(msg, optional=self.get_views(key='nice', option='optional'))) |
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msg = '{0:>5}%'.format(self.stats['nice']) |
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ret.append(self.curse_add_line(msg, optional=self.get_views(key='nice', option='optional'))) |
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# New line |
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ret.append(self.curse_new_line()) |
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# User CPU |
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if 'user' in self.stats: |
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msg = '{0:8}'.format('user:') |
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ret.append(self.curse_add_line(msg)) |
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msg = '{0:>5}%'.format(self.stats['user']) |
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ret.append(self.curse_add_line( |
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msg, self.get_views(key='user', option='decoration'))) |
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elif 'idle' in self.stats: |
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msg = '{0:8}'.format('idle:') |
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ret.append(self.curse_add_line(msg)) |
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msg = '{0:>5}%'.format(self.stats['idle']) |
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ret.append(self.curse_add_line(msg)) |
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# IRQ CPU |
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if 'irq' in self.stats: |
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msg = ' {0:8}'.format('irq:') |
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ret.append(self.curse_add_line(msg, optional=self.get_views(key='irq', option='optional'))) |
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msg = '{0:>5}%'.format(self.stats['irq']) |
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ret.append(self.curse_add_line(msg, optional=self.get_views(key='irq', option='optional'))) |
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# New line |
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ret.append(self.curse_new_line()) |
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# System CPU |
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if 'system' in self.stats and not idle_tag: |
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msg = '{0:8}'.format('system:') |
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ret.append(self.curse_add_line(msg)) |
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msg = '{0:>5}%'.format(self.stats['system']) |
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ret.append(self.curse_add_line( |
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msg, self.get_views(key='system', option='decoration'))) |
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else: |
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msg = '{0:8}'.format('core:') |
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ret.append(self.curse_add_line(msg)) |
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msg = '{0:>6}'.format(self.stats['nb_log_core']) |
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ret.append(self.curse_add_line(msg)) |
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# IOWait CPU |
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if 'iowait' in self.stats: |
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msg = ' {0:8}'.format('iowait:') |
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ret.append(self.curse_add_line(msg, optional=self.get_views(key='iowait', option='optional'))) |
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msg = '{0:>5}%'.format(self.stats['iowait']) |
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ret.append(self.curse_add_line( |
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msg, self.get_views(key='iowait', option='decoration'), |
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optional=self.get_views(key='iowait', option='optional'))) |
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# New line |
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ret.append(self.curse_new_line()) |
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# Idle CPU |
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if 'idle' in self.stats and not idle_tag: |
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msg = '{0:8}'.format('idle:') |
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ret.append(self.curse_add_line(msg)) |
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msg = '{0:>5}%'.format(self.stats['idle']) |
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ret.append(self.curse_add_line(msg)) |
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# Steal CPU usage |
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if 'steal' in self.stats: |
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msg = ' {0:8}'.format('steal:') |
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ret.append(self.curse_add_line(msg, optional=self.get_views(key='steal', option='optional'))) |
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msg = '{0:>5}%'.format(self.stats['steal']) |
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ret.append(self.curse_add_line( |
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msg, self.get_views(key='steal', option='decoration'), |
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optional=self.get_views(key='steal', option='optional'))) |
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# Return the message with decoration |
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return ret |
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nicolargo /
glances
Loading history...
Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.
You can also find more detailed suggestions in the “Code” section of your repository.