187 lines
6.3 KiB
Python
187 lines
6.3 KiB
Python
# pylint: disable=C0111,R0903
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"""Displays network IO for interfaces.
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Parameters:
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* traffic.exclude: Comma-separated list of interface prefixes to exclude (defaults to 'lo,virbr,docker,vboxnet,veth')
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* traffic.states: Comma-separated list of states to show (prefix with '^' to invert - i.e. ^down -> show all devices that are not in state down)
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* traffic.showname: If set to False, hide network interface name (defaults to True)
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* traffic.format: Format string for download/upload speeds.
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Defaults to '{:.2f}'
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* traffic.graphlen: Graph lenth in seconds. Positive even integer. Each
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char shows 2 seconds. If set, enables up/down traffic
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graphs
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contributed by `meain <https://github.com/meain>`_ - many thanks!
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"""
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import re
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import time
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import psutil
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import netifaces
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import core.module
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import util.format
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import util.graph
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class Module(core.module.Module):
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def __init__(self, config, theme):
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super().__init__(config, theme, [])
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self._exclude = tuple(
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filter(
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len,
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util.format.aslist(
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self.parameter("exclude", "lo,virbr,docker,vboxnet,veth")
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),
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)
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)
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self._status = ""
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self._showname = util.format.asbool(self.parameter("showname", True))
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self._format = self.parameter("format", "{:.2f}")
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self._prev = {}
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self._states = {}
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self._lastcheck = 0
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self._states["include"] = []
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self._states["exclude"] = []
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for state in tuple(
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filter(len, util.format.aslist(self.parameter("states", "")))
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):
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if state[0] == "^":
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self._states["exclude"].append(state[1:])
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else:
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self._states["include"].append(state)
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self._graphlen = int(self.parameter("graphlen", 0))
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if self._graphlen > 0:
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self._graphdata = {}
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self._first_run = True
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self._update_widgets()
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def state(self, widget):
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if "traffic.rx" in widget.name:
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return "rx"
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if "traffic.tx" in widget.name:
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return "tx"
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return self._status
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def update(self):
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self._update_widgets()
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def create_widget(self, name, txt=None, attributes={}):
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widget = self.add_widget(name=name, full_text=txt)
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for key in attributes:
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widget.set(key, attributes[key])
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return widget
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def get_addresses(self, intf):
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retval = []
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try:
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for ip in netifaces.ifaddresses(intf).get(netifaces.AF_INET, []):
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if ip.get("addr", "") != "":
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retval.append(ip.get("addr"))
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except Exception:
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return []
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return retval
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def get_minwidth_str(self):
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"""
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computes theme.minwidth string
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based on traffic.format and traffic.graphlen parameters
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"""
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minwidth_str = ""
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if self._graphlen > 0:
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graph_len = int(self._graphlen / 2)
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graph_prefix = "0" * graph_len
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minwidth_str += graph_prefix
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minwidth_str += "1000"
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try:
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length = int(re.match(r"{:\.(\d+)f}", self._format).group(1))
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if length > 0:
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minwidth_str += "." + "0" * length
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except AttributeError:
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# return default value
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return "1000.00KiB/s"
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finally:
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minwidth_str += "KiB/s"
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return minwidth_str
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def _update_widgets(self):
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interfaces = [
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i for i in netifaces.interfaces() if not i.startswith(self._exclude)
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]
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self.clear_widgets()
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counters = psutil.net_io_counters(pernic=True)
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now = time.time()
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timediff = now - (self._lastcheck if self._lastcheck else now)
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if timediff <= 0:
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timediff = 1
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self._lastcheck = now
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for interface in interfaces:
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if self._graphlen > 0:
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if interface not in self._graphdata:
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self._graphdata[interface] = {
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"rx": [0] * self._graphlen,
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"tx": [0] * self._graphlen,
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}
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if not interface:
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interface = "lo"
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state = "down"
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if len(self.get_addresses(interface)) > 0:
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state = "up"
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elif util.format.asbool(self.parameter("hide_down", True)):
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continue
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if len(self._states["exclude"]) > 0 and state in self._states["exclude"]:
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continue
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if (
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len(self._states["include"]) > 0
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and state not in self._states["include"]
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):
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continue
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data = {
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"rx": counters[interface].bytes_recv,
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"tx": counters[interface].bytes_sent,
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}
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name = "traffic-{}".format(interface)
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if self._showname:
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self.create_widget(name, interface)
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for direction in ["rx", "tx"]:
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name = "traffic.{}-{}".format(direction, interface)
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widget = self.create_widget(
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name, attributes={"theme.minwidth": self.get_minwidth_str()},
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)
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prev = self._prev.get(name, 0)
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bspeed = (int(data[direction]) - int(prev)) / timediff
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speed = util.format.byte(bspeed, self._format)
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txtspeed = "{0}/s".format(speed)
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if self._graphlen > 0:
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# skip first value returned by psutil, because it is
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# giant and ruins the grapth ratio until it gets pushed
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# out of saved list
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if self._first_run is True:
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self._first_run = False
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else:
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self._graphdata[interface][direction] = self._graphdata[
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interface
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][direction][1:]
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self._graphdata[interface][direction].append(bspeed)
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txtspeed = "{}{}".format(
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util.graph.braille(self._graphdata[interface][direction]),
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txtspeed,
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)
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widget.full_text(txtspeed)
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self._prev[name] = data[direction]
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# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4
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