graph templates: Make some atttibutes easier to set
[collecty.git] / src / collecty / plugins / entropy.py
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1#!/usr/bin/python
2###############################################################################
3# #
4# collecty - A system statistics collection daemon for IPFire #
5# Copyright (C) 2012 IPFire development team #
6# #
7# This program is free software: you can redistribute it and/or modify #
8# it under the terms of the GNU General Public License as published by #
9# the Free Software Foundation, either version 3 of the License, or #
10# (at your option) any later version. #
11# #
12# This program is distributed in the hope that it will be useful, #
13# but WITHOUT ANY WARRANTY; without even the implied warranty of #
14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
15# GNU General Public License for more details. #
16# #
17# You should have received a copy of the GNU General Public License #
18# along with this program. If not, see <http://www.gnu.org/licenses/>. #
19# #
20###############################################################################
21
22import os
23
24import base
25
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26from ..i18n import _
27
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28ENTROPY_FILE = "/proc/sys/kernel/random/entropy_avail"
29
b1ea4956 30class GraphTemplateEntropy(base.GraphTemplate):
55c28321 31 name = "entropy"
55c28321 32
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33 rrd_graph = [
34 "DEF:entropy=%(file)s:entropy:AVERAGE",
35 "CDEF:entropytrend=entropy,43200,TREND",
36
37 "LINE3:entropy#ff0000:%-15s" % _("Available entropy"),
38 "VDEF:entrmin=entropy,MINIMUM",
39 "VDEF:entrmax=entropy,MAXIMUM",
40 "VDEF:entravg=entropy,AVERAGE",
41 "GPRINT:entrmax:%12s\:" % _("Maximum") + " %5.0lf",
42 "GPRINT:entrmin:%12s\:" % _("Minimum") + " %5.0lf",
43 "GPRINT:entravg:%12s\:" % _("Average") + " %5.0lf\\n",
44
45 "LINE3:entropytrend#000000",
46 ]
b1ea4956 47
f181246a 48 lower_limit = 0
73db5226 49
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50 @property
51 def graph_title(self):
52 return _("Available entropy")
53
54 @property
55 def graph_vertical_label(self):
56 return _("Bit")
73db5226 57
b1ea4956 58
72364063 59class EntropyObject(base.Object):
b1ea4956 60 rrd_schema = [
de090041 61 "DS:entropy:GAUGE:0:U",
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62 ]
63
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64 @property
65 def id(self):
66 return "default"
55c28321 67
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68 def collect(self):
69 with open(ENTROPY_FILE) as f:
70 return f.readline().strip()
55c28321 71
55c28321 72
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73class EntropyPlugin(base.Plugin):
74 name = "entropy"
75 description = "Entropy Plugin"
76
c968f6d9 77 templates = [GraphTemplateEntropy]
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78
79 @property
80 def objects(self):
81 if not os.path.exists(ENTROPY_FILE):
82 self.log.debug(_("Entropy kernel interface does not exist"))
83 return []
55c28321 84
72364063 85 return [EntropyObject(self)]