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# Copyright (C) 2008, 2009 Red Hat, Inc.
# Authors: Phil Knirsch
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
import os
class NetMonitor:
def __init__(self):
self.devices = {}
self.enabled = True
devs = open("/proc/net/dev").readlines()
for l in devs:
l = l.replace(":", " ")
v = l.split()
d = v[0]
if not d.startswith("eth"):
continue
self.devices[d] = {}
self.devices[d]["new"] = ['0', '0', '0', '0']
# Assume 1gbit interfaces for now. FIXME: Need clean way to figure out max interface speed
self.devices[d]["max"] = [70*1024*1024, 1, 70*1024*1024, 1]
self.__updateStat__(d)
self.devices[d]["max"] = [70*1024*1024, 1, 70*1024*1024, 1]
print self.devices
def __calcdiff__(self, dev):
l = []
for i in xrange(len(self.devices[dev]["old"])):
l.append(int(self.devices[dev]["new"][i]) - int(self.devices[dev]["old"][i]))
return l
def __updateStat__(self, dev):
self.devices[dev]["old"] = self.devices[dev]["new"][:]
l = open("/sys/class/net/"+dev+"/statistics/rx_bytes", "r").read().strip()
self.devices[dev]["new"][0] = l
l = open("/sys/class/net/"+dev+"/statistics/rx_packets", "r").read().strip()
self.devices[dev]["new"][1] = l
l = open("/sys/class/net/"+dev+"/statistics/tx_bytes", "r").read().strip()
self.devices[dev]["new"][2] = l
l = open("/sys/class/net/"+dev+"/statistics/tx_packets", "r").read().strip()
self.devices[dev]["new"][3] = l
l = self.__calcdiff__(dev)
for i in xrange(len(l)):
if l[i] > self.devices[dev]["max"][i]:
self.devices[dev]["max"][i] = l[i]
def __update__(self):
for dev in self.devices.keys():
self.__updateStat__(dev)
self.devices[dev]["diff"] = self.__calcdiff__(dev)
def init(self, config):
self.config = config
if self.config.has_option("NetMonitor", "enabled"):
self.enabled = (self.config.get("NetMonitor", "enabled") == "True")
interval = self.config.getint("main", "interval")
# Assume 1gbit interfaces for now. FIXME: Need clean way to figure out max interface speed
for d in self.devices.keys():
self.devices[d]["max"] = [70*1024*1024*interval, 1, 70*1024*1024*interval, 1]
def cleanup(self):
pass
def getLoad(self):
if not self.enabled:
return
self.__update__()
ret = {}
ret["NET"] = {}
for dev in self.devices.keys():
ret["NET"][dev] = {}
ret["NET"][dev]["READ"] = float(self.devices[dev]["diff"][0]) / float(self.devices[dev]["max"][0])
ret["NET"][dev]["WRITE"] = float(self.devices[dev]["diff"][2]) / float(self.devices[dev]["max"][2])
return ret
_plugin = NetMonitor()
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