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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The name
items_history_list does not conform to the constant naming conventions ((([A-Z_][A-Z0-9_]*)|(__.*__))$ ).
This check looks for invalid names for a range of different identifiers. You can set regular expressions to which the identifiers must conform if the defaults do not match your requirements. If your project includes a Pylint configuration file, the settings contained in that file take precedence. To find out more about Pylint, please refer to their site.
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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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Catching very general exceptions such as
Exception is usually not recommended.
Generally, you would want to handle very specific errors in the exception handler. This ensure that you do not hide other types of errors which should be fixed. So, unless you specifically plan to handle any error, consider adding a more specific exception.
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66 | self.nb_log_core = 1 |
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67 | |||
68 | def _getloadavg(self): |
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This method could be written as a function/class method.
If a method does not access any attributes of the class, it could also be implemented as a function or static method. This can help improve readability. For example class Foo:
def some_method(self, x, y):
return x + y;
could be written as class Foo:
@classmethod
def some_method(cls, x, y):
return x + y;
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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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The name
v does not conform to the variable naming conventions ((([a-z][a-z0-9_]{2,30})|(_[a-z0-9_]*))$ ).
This check looks for invalid names for a range of different identifiers. You can set regular expressions to which the identifiers must conform if the defaults do not match your requirements. If your project includes a Pylint configuration file, the settings contained in that file take precedence. To find out more about Pylint, please refer to their site.
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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 |