collecty/plugins/entropy.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 import os
  23
  24 import base
  25
  26 ENTROPY_FILE = "/proc/sys/kernel/random/entropy_avail"
  27
  28 class PluginEntropy(base.Plugin):
  29         name = "entropy"
  30         description = "Entropy Plugin"
  31
  32         rrd_schema = [
  33                 "DS:entropy:GAUGE:120:0:U",
  34                 "RRA:AVERAGE:0.5:1:2160",
  35                 "RRA:AVERAGE:0.5:5:2016",
  36                 "RRA:AVERAGE:0.5:15:2880",
  37                 "RRA:AVERAGE:0.5:60:8760",
  38         ]
  39
  40         @classmethod
  41         def autocreate(cls, collecty, **kwargs):
  42                 if not os.path.exists(ENTROPY_FILE):
  43                         self.log.debug(_("Entropy kernel interface does not exist."))
  44                         return
  45
  46                 return cls(collecty, **kwargs)
  47
  48         def read(self):
  49                 data = "%s" % self.now
  50
  51                 f = open(ENTROPY_FILE)
  52                 entropy = f.readline()
  53                 f.close()
  54
  55                 data += ":%s" % entropy.strip()
  56                 self.data.append(data)