1 | # -*- coding: utf-8 -*- |
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2 | # |
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3 | # This file is part of Glances. |
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4 | # |
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5 | # Copyright (C) 2019 Nicolargo <[email protected]> |
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6 | # |
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7 | # Glances is free software; you can redistribute it and/or modify |
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8 | # it under the terms of the GNU Lesser General Public License as published by |
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9 | # the Free Software Foundation, either version 3 of the License, or |
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10 | # (at your option) any later version. |
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11 | # |
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12 | # Glances is distributed in the hope that it will be useful, |
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13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 | # GNU Lesser General Public License for more details. |
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16 | # |
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17 | # You should have received a copy of the GNU Lesser General Public License |
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18 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
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19 | |||
20 | """Load plugin.""" |
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21 | |||
22 | import os |
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23 | import psutil |
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24 | |||
25 | from glances.compat import iteritems |
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26 | from glances.plugins.glances_core import Plugin as CorePlugin |
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27 | from glances.plugins.glances_plugin import GlancesPlugin |
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28 | |||
29 | # SNMP OID |
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30 | # 1 minute Load: .1.3.6.1.4.1.2021.10.1.3.1 |
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31 | # 5 minute Load: .1.3.6.1.4.1.2021.10.1.3.2 |
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32 | # 15 minute Load: .1.3.6.1.4.1.2021.10.1.3.3 |
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33 | snmp_oid = {'min1': '1.3.6.1.4.1.2021.10.1.3.1', |
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34 | 'min5': '1.3.6.1.4.1.2021.10.1.3.2', |
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35 | 'min15': '1.3.6.1.4.1.2021.10.1.3.3'} |
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36 | |||
37 | # Define the history items list |
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38 | # All items in this list will be historised if the --enable-history tag is set |
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39 | items_history_list = [{'name': 'min1', |
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40 | 'description': '1 minute load'}, |
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41 | {'name': 'min5', |
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42 | 'description': '5 minutes load'}, |
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43 | {'name': 'min15', |
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44 | 'description': '15 minutes load'}] |
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45 | |||
46 | |||
47 | class Plugin(GlancesPlugin): |
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48 | """Glances load plugin. |
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49 | |||
50 | stats is a dict |
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51 | """ |
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52 | |||
53 | View Code Duplication | def __init__(self, args=None, config=None): |
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54 | """Init the plugin.""" |
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55 | super(Plugin, self).__init__(args=args, |
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56 | config=config, |
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57 | items_history_list=items_history_list) |
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58 | |||
59 | # We want to display the stat in the curse interface |
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60 | self.display_curse = True |
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61 | |||
62 | # Call CorePlugin in order to display the core number |
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63 | try: |
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64 | self.nb_log_core = CorePlugin(args=self.args).update()["log"] |
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65 | except Exception: |
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66 | self.nb_log_core = 1 |
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67 | |||
68 | def _getloadavg(self): |
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69 | """Get load average. On both Linux and Windows thanks to PsUtil""" |
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70 | try: |
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71 | return psutil.getloadavg() |
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72 | except AttributeError: |
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73 | pass |
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74 | try: |
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75 | return os.getloadavg() |
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76 | except (AttributeError, OSError): |
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77 | return None |
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78 | |||
79 | @GlancesPlugin._check_decorator |
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80 | @GlancesPlugin._log_result_decorator |
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81 | def update(self): |
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82 | """Update load stats.""" |
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83 | # Init new stats |
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84 | stats = self.get_init_value() |
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85 | |||
86 | if self.input_method == 'local': |
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87 | # Update stats using the standard system lib |
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88 | |||
89 | # Get the load using the os standard lib |
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90 | load = self._getloadavg() |
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91 | if load is None: |
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92 | stats = self.get_init_value() |
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93 | else: |
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94 | stats = {'min1': load[0], |
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95 | 'min5': load[1], |
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96 | 'min15': load[2], |
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97 | 'cpucore': self.nb_log_core} |
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98 | |||
99 | elif self.input_method == 'snmp': |
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100 | # Update stats using SNMP |
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101 | stats = self.get_stats_snmp(snmp_oid=snmp_oid) |
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102 | |||
103 | if stats['min1'] == '': |
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104 | stats = self.get_init_value() |
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105 | return stats |
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106 | |||
107 | # Python 3 return a dict like: |
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108 | # {'min1': "b'0.08'", 'min5': "b'0.12'", 'min15': "b'0.15'"} |
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109 | for k, v in iteritems(stats): |
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110 | stats[k] = float(v) |
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111 | |||
112 | stats['cpucore'] = self.nb_log_core |
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113 | |||
114 | # Update the stats |
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115 | self.stats = stats |
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116 | |||
117 | return self.stats |
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118 | |||
119 | def update_views(self): |
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120 | """Update stats views.""" |
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121 | # Call the father's method |
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122 | super(Plugin, self).update_views() |
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123 | |||
124 | # Add specifics informations |
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125 | try: |
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126 | # Alert and log |
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127 | self.views['min15']['decoration'] = self.get_alert_log(self.stats['min15'], maximum=100 * self.stats['cpucore']) |
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128 | # Alert only |
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129 | self.views['min5']['decoration'] = self.get_alert(self.stats['min5'], maximum=100 * self.stats['cpucore']) |
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130 | except KeyError: |
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131 | # try/except mandatory for Windows compatibility (no load stats) |
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132 | pass |
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133 | |||
134 | def msg_curse(self, args=None, max_width=None): |
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135 | """Return the dict to display in the curse interface.""" |
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136 | # Init the return message |
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137 | ret = [] |
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138 | |||
139 | # Only process if stats exist, not empty (issue #871) and plugin not disabled |
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140 | if not self.stats or (self.stats == {}) or self.is_disable(): |
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141 | return ret |
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142 | |||
143 | # Build the string message |
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144 | # Header |
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145 | msg = '{:8}'.format('LOAD') |
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146 | ret.append(self.curse_add_line(msg, "TITLE")) |
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147 | # Core number |
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148 | if 'cpucore' in self.stats and self.stats['cpucore'] > 0: |
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149 | msg = '{}-core'.format(int(self.stats['cpucore'])) |
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150 | ret.append(self.curse_add_line(msg)) |
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151 | # New line |
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152 | ret.append(self.curse_new_line()) |
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153 | # 1min load |
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154 | msg = '{:8}'.format('1 min:') |
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155 | ret.append(self.curse_add_line(msg)) |
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156 | msg = '{:>6.2f}'.format(self.stats['min1']) |
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157 | ret.append(self.curse_add_line(msg)) |
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158 | # New line |
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159 | ret.append(self.curse_new_line()) |
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160 | # 5min load |
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161 | msg = '{:8}'.format('5 min:') |
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162 | ret.append(self.curse_add_line(msg)) |
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163 | msg = '{:>6.2f}'.format(self.stats['min5']) |
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164 | ret.append(self.curse_add_line( |
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165 | msg, self.get_views(key='min5', option='decoration'))) |
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166 | # New line |
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167 | ret.append(self.curse_new_line()) |
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168 | # 15min load |
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169 | msg = '{:8}'.format('15 min:') |
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170 | ret.append(self.curse_add_line(msg)) |
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171 | msg = '{:>6.2f}'.format(self.stats['min15']) |
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172 | ret.append(self.curse_add_line( |
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173 | msg, self.get_views(key='min15', option='decoration'))) |
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174 | |||
175 | return ret |
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176 |