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 | """ |
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21 | SystemV AMP |
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22 | =========== |
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23 | |||
24 | Monitor the state of the Syste V init system and service. |
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25 | |||
26 | How to read the stats |
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27 | --------------------- |
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28 | |||
29 | Running: Number of running services. |
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30 | Stopped: Number of stopped services. |
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31 | Upstart: Number of service managed by Upstart. |
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32 | |||
33 | Source reference: http://askubuntu.com/questions/407075/how-to-read-service-status-all-results |
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34 | |||
35 | Configuration file example |
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36 | -------------------------- |
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37 | |||
38 | [amp_systemv] |
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39 | # Systemv |
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40 | enable=true |
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41 | regex=\/sbin\/init |
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42 | refresh=60 |
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43 | one_line=true |
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44 | service_cmd=/usr/bin/service --status-all |
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45 | """ |
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46 | |||
47 | from subprocess import check_output, STDOUT |
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48 | |||
49 | from glances.logger import logger |
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50 | from glances.compat import iteritems |
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51 | from glances.amps.glances_amp import GlancesAmp |
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52 | |||
53 | |||
54 | class Amp(GlancesAmp): |
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55 | """Glances' Systemd AMP.""" |
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56 | |||
57 | NAME = 'SystemV' |
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58 | VERSION = '1.0' |
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59 | DESCRIPTION = 'Get services list from service (initd)' |
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60 | AUTHOR = 'Nicolargo' |
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61 | EMAIL = '[email protected]' |
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62 | |||
63 | # def __init__(self, args=None): |
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64 | # """Init the AMP.""" |
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65 | # super(Amp, self).__init__(args=args) |
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66 | |||
67 | def update(self, process_list): |
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68 | """Update the AMP""" |
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69 | # Get the systemctl status |
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70 | logger.debug('{}: Update stats using service {}'.format(self.NAME, self.get('service_cmd'))) |
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71 | try: |
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72 | res = check_output(self.get('service_cmd').split(), stderr=STDOUT).decode('utf-8') |
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73 | except OSError as e: |
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74 | logger.debug('{}: Error while executing service ({})'.format(self.NAME, e)) |
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75 | else: |
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76 | status = {'running': 0, 'stopped': 0, 'upstart': 0} |
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77 | # For each line |
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78 | for r in res.split('\n'): |
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79 | # Split per space .* |
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80 | l = r.split() |
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81 | if len(l) < 4: |
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82 | continue |
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83 | if l[1] == '+': |
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84 | status['running'] += 1 |
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85 | elif l[1] == '-': |
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86 | status['stopped'] += 1 |
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87 | elif l[1] == '?': |
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88 | status['upstart'] += 1 |
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89 | # Build the output (string) message |
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90 | output = 'Services\n' |
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91 | for k, v in iteritems(status): |
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92 | output += '{}: {}\n'.format(k, v) |
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93 | self.set_result(output, separator=' ') |
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94 | |||
95 | return self.result() |
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96 |
Cyclic imports may cause partly loaded modules to be returned. This might lead to unexpected runtime behavior which is hard to debug.