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# -*- coding: utf-8 -*-
"""
Display network speed and bandwidth usage.
Configuration parameters:
- cache_timeout : how often we refresh this module in seconds (2s default)
- low_* / med_* : coloration thresholds
- nic : the network interface to monitor (defaults to eth0)
@author Shahin Azad <ishahinism at Gmail>
"""
import subprocess
from time import time
class GetData:
"""Get system status.
"""
def __init__(self, nic):
self.nic = nic
def execCMD(self, cmd, arg):
"""Take a system command and its argument, then return the result.
Arguments:
- `cmd`: system command.
- `arg`: argument.
"""
result = subprocess.check_output([cmd, arg])
return result
def netBytes(self):
"""Execute 'cat /proc/net/dev', find the interface line (Default
'eth0') and grab received/transmitted bytes.
"""
net_data = self.execCMD('cat', '/proc/net/dev').decode('utf-8').split()
interface_index = net_data.index(self.nic + ':')
received_bytes = int(net_data[interface_index + 1])
transmitted_bytes = int(net_data[interface_index + 9])
return received_bytes, transmitted_bytes
class Py3status:
"""
"""
# available configuration parameters
cache_timeout = 2
low_speed = 30
low_traffic = 400
med_speed = 60
med_traffic = 700
nic = 'eth0'
def __init__(self):
self.old_transmitted = 0
self.old_received = 0
def net_speed(self, i3s_output_list, i3s_config):
"""
Calculate network speed ('eth0' interface) and return it.
You can change the interface using 'nic' configuration parameter.
"""
data = GetData(self.nic)
response = {'full_text': ''}
received_bytes, transmitted_bytes = data.netBytes()
dl_speed = (received_bytes - self.old_received) / 1024.
up_speed = (transmitted_bytes - self.old_transmitted) / 1024.
if dl_speed < self.low_speed:
response['color'] = i3s_config['color_bad']
elif dl_speed < self.med_speed:
response['color'] = i3s_config['color_degraded']
else:
response['color'] = i3s_config['color_good']
response['full_text'] = "LAN(Kb): {:5.1f}↓ {:5.1f}↑"\
.format(dl_speed, up_speed)
response['cached_until'] = time() + self.cache_timeout
self.old_received = received_bytes
self.old_transmitted = transmitted_bytes
return response
def net_traffic(self, i3s_output_list, i3s_config):
"""
Calculate networks used traffic.
You can change the interface using 'nic' configuration parameter.
"""
data = GetData(self.nic)
response = {'full_text': ''}
received_bytes, transmitted_bytes = data.netBytes()
download = received_bytes / 1024 / 1024.
upload = transmitted_bytes / 1024 / 1024.
total = download + upload
if total < self.low_traffic:
response['color'] = i3s_config['color_good']
elif total < self.med_traffic:
response['color'] = i3s_config['color_degraded']
else:
response['color'] = i3s_config['color_bad']
response['full_text'] = "T(Mb): {:3.0f}↓ {:3.0f}↑ {:3.0f}↕".format(
download,
upload,
total
)
return response
if __name__ == "__main__":
"""
Test this module by calling it directly.
"""
from time import sleep
x = Py3status()
config = {
'color_good': '#00FF00',
'color_bad': '#FF0000',
}
while True:
print(x.net_speed([], config))
print(x.net_traffic([], config))
sleep(1)
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