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[collecty.git] / src / collecty / plugins / memory.py
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
22 from __future__ import division
23
24 import base
25
26 from ..i18n import _
27
28 class GraphTemplateMemory(base.GraphTemplate):
29         name = "memory"
30
31         rrd_graph = [
32                 "DEF:used=%(file)s:used:AVERAGE",
33                 "DEF:cached=%(file)s:cached:AVERAGE",
34                 "DEF:buffered=%(file)s:buffered:AVERAGE",
35                 "DEF:free=%(file)s:free:AVERAGE",
36                 "DEF:swap=%(file)s:swap:AVERAGE",
37
38                 "AREA:used#90EE90:%-15s" % _("Used memory"),
39                 "VDEF:usedmin=used,MINIMUM",
40                 "VDEF:usedmax=used,MAXIMUM",
41                 "VDEF:usedavg=used,AVERAGE",
42                 "GPRINT:usedmax:%12s\:" % _("Maximum") + " %6.2lf" ,
43                 "GPRINT:usedmin:%12s\:" % _("Minimum") + " %6.2lf",
44                 "GPRINT:usedavg:%12s\:" % _("Average") + " %6.2lf\\n",
45
46                 "STACK:buffered#4169E1:%-15s" % _("Buffered data"),
47                 "VDEF:bufferedmin=buffered,MINIMUM",
48                 "VDEF:bufferedmax=buffered,MAXIMUM",
49                 "VDEF:bufferedavg=buffered,AVERAGE",
50                 "GPRINT:bufferedmax:%12s\:" % _("Maximum") + " %6.2lf" ,
51                 "GPRINT:bufferedmin:%12s\:" % _("Minimum") + " %6.2lf",
52                 "GPRINT:bufferedavg:%12s\:" % _("Average") + " %6.2lf\\n",
53
54                 "STACK:cached#FFD700:%-15s" % _("Cached data"),
55                 "VDEF:cachedmin=cached,MINIMUM",
56                 "VDEF:cachedmax=cached,MAXIMUM",
57                 "VDEF:cachedavg=cached,AVERAGE",
58                 "GPRINT:cachedmax:%12s\:" % _("Maximum") + " %6.2lf" ,
59                 "GPRINT:cachedmin:%12s\:" % _("Minimum") + " %6.2lf",
60                 "GPRINT:cachedavg:%12s\:" % _("Average") + " %6.2lf\\n",
61
62 #               "STACK:free#7799ff:%-15s" % _("Free memory"),
63 #               "VDEF:freemin=free,MINIMUM",
64 #               "VDEF:freemax=free,MAXIMUM",
65 #               "VDEF:freeavg=free,AVERAGE",
66 #               "GPRINT:freemax:%12s\:" % _("Maximum") + " %6.2lf" ,
67 #               "GPRINT:freemin:%12s\:" % _("Minimum") + " %6.2lf",
68 #               "GPRINT:freeavg:%12s\:" % _("Average") + " %6.2lf\\n",
69
70                 "LINE3:swap#ff0000:%-15s" % _("Used Swap space"),
71                 "VDEF:swapmin=swap,MINIMUM",
72                 "VDEF:swapmax=swap,MAXIMUM",
73                 "VDEF:swapavg=swap,AVERAGE",
74                 "GPRINT:swapmax:%12s\:" % _("Maximum") + " %6.2lf" ,
75                 "GPRINT:swapmin:%12s\:" % _("Minimum") + " %6.2lf",
76                 "GPRINT:swapavg:%12s\:" % _("Average") + " %6.2lf\\n",
77         ]
78
79         rrd_graph_args = [
80                 "--title", _("Memory Usage"),
81                 "--vertical-label", _("Percent"),
82
83                 # Limit y axis.
84                 "--upper-limit", "100",
85                 "--lower-limit", "0",
86                 "--rigid",
87         ]
88
89
90 class DataSourceMemory(base.DataSource):
91         name = "memory"
92         description = "Memory Usage Data Source"
93
94         templates = [GraphTemplateMemory,]
95
96         rrd_schema = [
97                 "DS:used:GAUGE:0:100",
98                 "DS:cached:GAUGE:0:100",
99                 "DS:buffered:GAUGE:0:100",
100                 "DS:free:GAUGE:0:100",
101                 "DS:swap:GAUGE:0:100",
102         ]
103
104         @classmethod
105         def autocreate(cls, collecty, **kwargs):
106                 # Every system has got memory.
107                 return cls(collecty, **kwargs)
108
109         def read(self):
110                 f = None
111
112                 try:
113                         f = open("/proc/meminfo")
114                         for line in f.readlines():
115                                 if line.startswith("MemTotal:"):
116                                         total = float(line.split()[1])
117                                 if line.startswith("MemFree:"):
118                                         free = float(line.split()[1])
119                                 elif line.startswith("Buffers:"):
120                                         buffered = float(line.split()[1])
121                                 elif line.startswith("Cached:"):
122                                         cached = float(line.split()[1])
123                                 elif line.startswith("SwapTotal:"):
124                                         swapt = float(line.split()[1])
125                                 elif line.startswith("SwapFree:"):
126                                         swapf = float(line.split()[1])
127
128                         ret = [
129                                 "%s" % ((total - (free + buffered + cached)) * 100 / total),
130                                 "%s" % (cached * 100 / total),
131                                 "%s" % (buffered * 100 / total),
132                                 "%s" % (free * 100 / total),
133                         ]
134
135                         if swapt:
136                                 ret.append("%s" % ((swapt - swapf) * 100 / swapt))
137                         else:
138                                 ret.append("0")
139
140                         return ":".join(ret)
141                 finally:
142                         if f:
143                                 f.close()