Source code for libqtile.widget.net

# Copyright (c) 2014 Rock Neurotiko
#
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from __future__ import division

from libqtile.log_utils import logger
from . import base

[docs]class Net(base.ThreadedPollText): """Displays interface down and up speed""" orientations = base.ORIENTATION_HORIZONTAL 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' # b is a float, so don't use integer division if int(b / 1000) > 0: b /= 1000.0 letter = 'k' if int(b / 1000) > 0: b /= 1000.0 letter = 'M' if int(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 = u"%s%s \u2193\u2191 %s%s" self.interfaces = new_int return str_base % (down, down_letter, up, up_letter) except Exception: logger.error('%s: Probably your wlan device is switched off or otherwise not present in your system.', self.__class__.__name__)