# Copyright (c) 2014 Rock Neurotiko
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
from . import base
import logging
import six
[docs]class Net(base.ThreadedPollText):
"""
Displays interface down and up speed.
"""
defaults = [
('interface', 'wlan0', 'The interface to monitor'),
('update_interval', 1, 'The update interval.'),
]
def __init__(self, **config):
base.ThreadedPollText.__init__(self, **config)
self.add_defaults(Net.defaults)
self.interfaces = self.get_stats()
def convert_b(self, b):
# Here we round to 1000 instead of 1024
# because of round things
letter = 'B'
if b // 1000 > 0:
b /= 1000.0
letter = 'K'
if b // 1000 > 0:
b /= 1000.0
letter = 'M'
if b // 1000 > 0:
b /= 1000.0
letter = 'G'
# I hope no one have more than 999 GB/s
return b, letter
def get_stats(self):
lines = [] # type: List[str]
with open('/proc/net/dev', 'r') as f:
lines = f.readlines()[2:]
interfaces = {}
for s in lines:
int_s = s.split()
name = int_s[0][:-1]
down = float(int_s[1])
up = float(int_s[-8])
interfaces[name] = {'down': down, 'up': up}
return interfaces
def _format(self, down, up):
down = "%0.2f" % down
up = "%0.2f" % up
if len(down) > 5:
down = down[:5]
if len(up) > 5:
up = up[:5]
down = " " * (5 - len(down)) + down
up = " " * (5 - len(up)) + up
return down, up
def poll(self):
try:
new_int = self.get_stats()
down = new_int[self.interface]['down'] - \
self.interfaces[self.interface]['down']
up = new_int[self.interface]['up'] - \
self.interfaces[self.interface]['up']
down = down / self.update_interval
up = up / self.update_interval
down, down_letter = self.convert_b(down)
up, up_letter = self.convert_b(up)
down, up = self._format(down, up)
str_base = six.u("%s%s \u2193\u2191 %s%s")
self.interfaces = new_int
return str_base % (down, down_letter, up, up_letter)
except Exception as e:
logging.getLogger('qtile').error('%s: Probably your wlan device is switched off or otherwise not present in your system.',
self.__class__.__name__, str(e))